WO2018171643A1

WO2018171643A1 - Information transmission method, apparatus and system

Info

Publication number: WO2018171643A1
Application number: PCT/CN2018/079900
Authority: WO
Inventors: 马梦瑶; 黄磊; 林英沛
Original assignee: 华为技术有限公司
Priority date: 2017-03-22
Filing date: 2018-03-21
Publication date: 2018-09-27
Also published as: CN108631971A; CN113347719A; CN108631971B

Abstract

The present application relates to the field of communications. Disclosed are an information transmission method, apparatus and system. The method comprises: a sending device determines L frequency-domain resource bundles, L being a positive integer; and the sending device sends L kinds of information to a receiving device by means of the L frequency-domain resource bundles, each of the frequency-domain resource bundles corresponding to one kind of the information, each frequency-domain resource bundle Ci of the frequency-domain resource bundles comprising Mi frequency-domain resource sets, each of the frequency-domain resource sets comprising ki,j consecutive frequency-domain units, 1≤i≤L,1≤j≤Mi, Mi being a positive integer, and Ki,j being a positive integer. The problem of failure to send multiple kinds of information by a terminal at the same time in a random access process of an NR system when the terminal only sends a random access preamble to an access network device is resolved. Because each frequency-domain resource bundle is only used for transmitting one kind of information, the requirement for sending different kinds of information to the access network device by the terminal at the same time in the random access process of the NR is satisfied.

Description

Information transmission method, device and system

This application claims the priority of the Chinese Patent Application, filed on March 22, 2017, the Chinese National Intellectual Property Office, the application number is 201710174978.3, and the invention is entitled "Information Transmission Method, Apparatus and System", the entire contents of which are incorporated herein by reference. In the application.

Technical field

The present application relates to the field of communications, and in particular, to an information transmission method, apparatus, and system.

Background technique

In Long-Term Evolution (LTE), a User Equipment (UE) establishes communication with an evolved base station (eNode B, eNB) through a random access procedure.

Specifically, the eNodeB broadcasts a physical random access channel (PRACH) resource in a system broadcast message, and the UE selects one PRACH resource to send a random access preamble to the eNodeB during random access. That is, the message 1; the eNB sends a random access response (Random Access Response) to the UE according to the pre-random access, and the random access response carries the uplink resource allocated for the UE, that is, the message 2; the UE adopts the uplink resource. Sending a message 3 to the eNB, where the message carries the UE identifier; the eNB determines whether there is a conflict according to the identifier of the UE, and if there is no conflict, sends a message 4 indicating that the access is successful to the UE; if there is a conflict, the UE is sent to the UE. A message 4 indicating that the access failed is sent.

In the current New Redio (NR) system discussed by 3GPP, the use of high frequency bands and low latency requirements have been introduced. Wherein, when transmitting information using the high frequency band, the gNB transmits downlink information to the UE through a beamforming (Beam Forming) technology to overcome a high path loss defect of the high frequency signal in the transmission process by using a narrow beam with high antenna gain. In the random access process of the high-frequency scenario, in order for the gNB to determine the preferred downlink beam direction when the message 2 is sent to the UE, the UE needs to not only send the random access preamble to the eNB in the message 1 of the random access procedure, but also It is necessary to feed back the corresponding downlink beam direction to the gNB. In addition, in order to meet the low delay requirement in the NR, the four-step random access procedure in the LTE may be simplified into two steps, that is, in the LTE message 3 The uplink data is sent by the UE in the message 1 during the random access process.

However, in LTE, the PRACH resource configured by the eNB for the UE can only be used to transmit the random access preamble, and cannot meet the requirement that the UE needs to simultaneously send multiple uplink information to the eNB in the NR system.

Summary of the invention

In order to solve the problem that the eNB configured for the UE in the LTE system is a PRACH resource that can be used for the UE to transmit the random access preamble and cannot meet the requirement that the UE needs to simultaneously send multiple uplink information to the eNB in the NR system, the embodiment of the present invention provides An information transmission method. The technical solution is as follows:

In a first aspect, an information transmission method is provided, the method comprising:

The transmitting device determines L frequency domain resource clusters, and sends L types of information to the receiving device through the L frequency domain resource clusters. Each frequency domain resource cluster corresponds to one type of information, and each frequency domain resource cluster Ci includes Mi frequency domain resource sets, and each frequency domain resource set includes ki, j consecutive frequency domain units. L is a positive integer, 1 ≤ i ≤ L, 1 ≤ j ≤ Mi, Mi is a positive integer, and ki, j is a positive integer.

By using L frequency domain resource clusters in the system bandwidth to simultaneously transmit L kinds of information to the receiving device, since each frequency domain resource cluster is used to transmit one type of information, when L is an integer greater than 1, the transmitting device can simultaneously receive the information. The device sends at least two kinds of information. When the sending device is a terminal, the receiving device is an access network device, and the terminal sends L types of information during the process of accessing the access network device, the L types of information may include not only random access. The preamble may also include the downlink beam direction information of the terminal and/or other uplink data, and the access network device cannot obtain the downlink beam direction information and/or other uplink data when the terminal only sends the random access preamble to the access network device. Therefore, in the random access process of the NR system, the terminal cannot simultaneously transmit multiple types of information, which satisfies the requirement that the terminal in the NR system simultaneously sends different types of information to the access network device.

Optionally, in the first aspect, when L=1, the transmitting device transmits a piece of information using a frequency domain resource cluster. For example, when the sending device is the UE and the receiving device is the gNB, and the UE is in the connected state, if the UE needs to perform cell switching, the frequency access resource cluster is used to send the random access preamble. When L≥2, the transmitting device transmits at least two types of information using at least two frequency domain resource clusters, wherein different frequency domain resource clusters transmit different kinds of information.

With reference to the first aspect, in a first implementation of the first aspect, the L frequency domain resource clusters comprise: two random access resource clusters located in a high frequency band; at this time, the transmitting device uses L frequency domain resource clusters The receiving device sends the L type information, the sending device sends the random access preamble to the receiving device by using the first random access resource cluster, and sends the downlink beam direction information to the receiving device by using the second random access resource cluster. The high frequency band refers to a frequency band whose frequency is greater than a preset frequency point, and the downlink beam direction information is used to indicate a downlink beam direction used by the receiving device to send downlink information to the sending device.

By using two frequency domain resource clusters in the random access process, the random access preamble and downlink beam direction information are simultaneously sent to the receiving device, and the two frequency domain resource clusters are resources of the high frequency band, so that the terminal and the access network When the device uses the resources in the high frequency band for random access, the terminal can simultaneously send the random access preamble and the downlink beam direction information to the access network device, and solve the problem in the high frequency scenario of the NR if the terminal only accesses the access network. The device sends the random access preamble, and the access network device cannot know the downlink beam direction information when transmitting the downlink information to the terminal, and satisfies the requirement that the terminal simultaneously accesses the access network device in the high frequency random access process of the NR system. The need to send two different types of information.

With reference to the first aspect, in a second implementation of the first aspect, the L frequency domain resource clusters comprise: three random access resource clusters located in a high frequency band;

The sending device sends the L types of information to the receiving device by using the L frequency domain resource clusters, including:

The sending device sends a random access preamble to the receiving device by using the first random access resource cluster; transmitting downlink beam direction information to the receiving device by using the second random access resource cluster; and sending other uplinks to the receiving device by using the third random access resource cluster data;

The other uplink data includes at least one of an identifier of the sending device, control information, a connection request, and a service data packet.

By using three frequency domain resource clusters to simultaneously transmit random access preamble, downlink beam direction information, and other uplink data to the receiving device in the random access process, the three frequency domain resource clusters are resources of the high frequency band, so that the terminal and the terminal When the access network device communicates using resources in the high frequency band, the terminal can simultaneously send random access preamble, downlink beam direction information and other uplink data to the access network device, and solve the high frequency two-step random connection in the NR system. In the process of the ingress, if the terminal can only send the random access preamble to the access network device, the access network device cannot know the downlink beam direction information when the downlink information is sent to the terminal, and the access network device cannot obtain the terminal. The identification, so that the problem of contention conflict cannot be solved, satisfies the requirement of transmitting three different types of information to the access network device in the high frequency two-step random access process of the NR system.

With reference to the first aspect, in a third implementation of the first aspect, the L frequency domain resource clusters include: two random access resource clusters; and the sending device sends the L types of information to the receiving device by using the L frequency domain resource clusters The sending device sends a random access preamble to the receiving device by using the first random access resource cluster, and sends other uplink data to the receiving device by using the second random access resource cluster.

By using two frequency domain resource clusters to simultaneously send a random access preamble and other uplink data to the receiving device in the random access process, the terminal can simultaneously connect to the access network device when accessing the access network device through the two-step random access method. The network access device sends a random access preamble and other uplink data, so that the access network device resolves the contention conflict according to the identifier of the terminal in the other uplink data, and solves the problem that the terminal only accesses the random access preamble when accessing the access network device. The network device cannot know the identity of the terminal, which requires four steps to solve the problem of contention conflict. It satisfies the requirement that the terminal simultaneously sends two different types of information to the access network device in the two-step random access process of the NR system. .

With reference to any one of the first implementation to the third implementation of the first aspect, in a fourth implementation of the first aspect, the first random access resource cluster is a random access resource cluster located in an unlicensed frequency band; The first random access resource cluster includes a first time domain resource and a second time domain resource in the time domain; the sending device sends the random access preamble to the receiving device by using the first random access resource cluster, where the sending device passes the first The time domain resource performs idle channel detection; when the idle channel detects the idle state, the transmitting device sends the random access preamble in the second time domain resource.

By performing idle channel detection before transmitting the random access preamble, the terminal can satisfy the LBT requirement of the unlicensed frequency band when using the unlicensed frequency band to transmit information to the access network device, thereby ensuring that the terminal and the access network device can be unauthorized. Normal communication during the random access process of the frequency band.

With reference to any one of the first implementation to the fourth implementation of the first aspect, in a fifth implementation of the first aspect, the random access preamble includes one of the following forms: a cyclic prefix CP, x a repeated first preamble sequence and a guard time GT, x being a positive integer; a first combination of y repetitions and a GT, the first combination being a combination of a CP and a first preamble sequence, y being a positive integer; A second combination of repetitions, the second combination refers to a combination of a CP, a first preamble sequence and a GT, and z is a positive integer.

By setting the three types of random access preambles, when the access network device configures at least two forms of random access preambles for the terminal, the terminal can flexibly access the at least two random types according to the current random access scenario. A form of access preamble is selected to transmit a random access preamble, which ensures that the terminal can select a form of random access preamble that adapts to the current random access scenario.

With reference to the first implementation or the second implementation of the first aspect, in a sixth implementation of the first aspect, the downlink beam direction information is indicated by an index of the second preamble sequence, and the second preamble sequence is generated and randomly connected. The first preamble sequence into the preamble is generated in the same manner.

Optionally, in a sixth implementation of the first aspect, the second preamble sequence is different from the first preamble sequence.

In combination with the first aspect to the sixth implementation of the first aspect, in a seventh implementation of the first aspect, the sending device determines the L frequency domain resource clusters, including: the sending device receives the resource sent by the receiving device Configuration information, the resource configuration information is used to configure N frequency domain resource clusters to the at least one sending device; the sending device determines L frequency domain resource clusters from the N frequency domain resource clusters; or the transmitting device receives the sending information sent by the receiving device The resource configuration information is used to configure L frequency domain resource clusters to the sending device; the sending device determines L frequency domain resource clusters according to the resource configuration information.

The resource configuration information is sent to the terminal in the system broadcast form by the access network device, so that the terminal can obtain N frequency domain resource clusters at one time, and select L from the N frequency domain resource clusters according to the current random access scenario. The frequency domain resource clusters are used to ensure that the terminal can select L frequency domain resource clusters suitable for the current random access scenario.

In addition, the access network device sends L frequency domain resource clusters to the terminal in a manner of dedicated signaling, so that the terminal does not need to select L frequency domain resource clusters from the N frequency domain resource clusters, thereby saving the resources of the terminal. For non-contention based random access scenarios.

With reference to the seventh implementation of the first aspect, in an eighth implementation of the first aspect, the resource configuration information includes at least one of the following four types of information: a type of information sent by each frequency domain resource cluster Cm; a transmission mode of the frequency domain resource cluster Cm; a set of Mm frequency domain resources included in each frequency domain resource cluster Cm; a starting position of each frequency domain resource set, and a frequency domain unit included in each frequency domain resource set The number of km, n, at least two kinds of information in the end position of each frequency domain resource set; 1 ≤ m ≤ N, 1 ≤ n ≤ Mm, N ≥ L, Mm is a positive integer; km, n is a positive integer.

By configuring the above four types of information, the resource configuration information obtained by the terminal can be adapted to different random access scenarios, such as a random access scenario in a high frequency unlicensed band, a random access scenario in a high frequency licensed band, and a low frequency. The random access scenario of the unlicensed frequency band and the random access scenario of the low frequency licensed frequency band ensure that the terminal can select L frequency domain resource clusters adapted to the current random access scenario from the resource configuration information.

With reference to the seventh implementation of the first aspect, in the ninth implementation of the first aspect, the N frequency domain resource clusters Cm configured by the resource configuration information, the at least one frequency domain resource cluster includes at least two frequency domain resource sets. And/or, there is at least one frequency domain resource cluster including one frequency domain resource set; and/or, in the N frequency domain resource clusters, there are a first frequency domain resource cluster and a second frequency domain resource cluster, the first frequency The number of frequency domain resource sets in the domain resource cluster is greater than the number of frequency domain resource sets in the second frequency domain resource cluster.

By dividing the system bandwidth into different types of frequency domain resource clusters Cm, different terminals can transmit information through the system bandwidth, and fully utilize the frequency domain resources of the system bandwidth.

With reference to the fifth implementation of the first aspect, in a tenth implementation of the first aspect, the sending device determines the L frequency domain resource clusters, including: the sending device receives the resource configuration information sent by the receiving device, where the resource configuration information includes the following information. At least one of the number of repetitions of the first preamble sequence in the random access preamble, the length of the CP, the number of CPs, the duration of the first time domain resource, the duration of the second time domain resource, the duration of the GT, and the randomness Access the form of the preamble.

By configuring the above information, the resource configuration information obtained by the terminal can be adapted to different random access scenarios, such as: a random access scenario in a high-frequency unlicensed band, a random access scenario in a high-frequency licensed band, and a low-frequency unauthorized access. The random access scenario of the frequency band and the random access scenario of the low frequency licensed frequency band ensure that the terminal can select the time domain resource adapted to the current random access from the resource configuration information.

With reference to any one of the first aspect to the tenth implementation of the first aspect, in the eleventh implementation of the first aspect, in the L kinds of information, the transmission mode of the at least two types of information is the same; and/or Among the L kinds of information, there are at least two types of information that have different transmission modes.

With reference to the eleventh implementation of the first aspect, in the twelfth implementation of the first aspect, in the L kinds of information, the transmission mode in which the at least one information exists is the first transmission mode; the first transmission mode refers to The set of Mi frequency domain resources in the same frequency domain resource cluster transmits the same information of Mi, and each frequency domain resource set transmits one piece of information.

The same information is transmitted through the Mi frequency domain resource sets, so that the transmitting device can select the frequency domain resource cluster to transmit the same information multiple times when the channel quality is poor, thereby improving the reliability of the transmission information.

With reference to the eleventh implementation of the first aspect, in the thirteenth implementation of the first aspect, in the L kinds of information, the transmission mode in which at least one type of information exists is the second transmission mode; the second transmission mode refers to The sets of Mi frequency domain resources in the same frequency domain resource cluster jointly transmit information, and each frequency domain unit transmits a part of the information.

The same information is transmitted through the frequency sets of the frequency resources of the Mi, so that when the channel quality is good, the transmitting device can select the frequency domain resource cluster to transmit the same type of information once, and fully utilize the frequency domain resources of the system bandwidth.

With reference to any one of the first aspect to the thirteenth implementation of the first aspect, in the fourteenth implementation of the first aspect, the at least two frequency domain resource sets in the L frequency domain resource clusters are in the frequency domain The above is discrete.

By determining that there are at least two frequency domain resource sets in the frequency domain that are discrete L frequency domain resource clusters, the transmitting device selects a frequency domain resource that meets a preset standard in a span of two frequency domain units on a system bandwidth. In the aggregation, the OCB requirement when transmitting information in the unlicensed frequency band can be satisfied, and the number of times the transmitting device repeatedly transmits the same type of information is reduced, and the utilization rate of the system bandwidth resource is improved.

In a second aspect, an information transmission method is provided. The method includes: receiving, by a L frequency domain resource cluster, a type of L information sent by a sending device, where each frequency domain resource cluster corresponds to one type of information; wherein each frequency The domain resource cluster Ci includes Mi frequency domain resource sets, each frequency domain resource set includes ki, j consecutive frequency domain units, L is a positive integer, 1≤i≤L, 1≤j≤Mi; Mi is a positive integer ;ki,j is a positive integer.

With reference to the second aspect, in a first implementation of the second aspect, the L frequency domain resource clusters include: two random access resource clusters located in a high frequency band; and the receiving device receives and transmits through the L frequency domain resource clusters The L type information sent by the device includes: the receiving device receives the random access preamble sent by the sending device by using the first random access resource cluster; and receives the downlink beam direction information sent by the sending device by using the second random access resource cluster; The frequency band refers to a frequency band whose frequency is greater than a preset frequency point, and the downlink beam direction information is used to indicate a downlink beam direction used by the receiving device to send downlink information to the sending device.

With reference to the second aspect, in a second implementation of the second aspect, the L frequency domain resource clusters comprise: three random access resource clusters located in a high frequency band; and the receiving device sends the L frequency resource cluster receiving and transmitting devices The L type information includes: the receiving device receives the random access preamble sent by the sending device by using the first random access resource cluster; and receives the downlink beam direction information sent by the sending device by using the second random access resource cluster; The inbound resource cluster receives the other uplink data sent by the sending device, where the high frequency band refers to the frequency band whose frequency is greater than the preset frequency point, and the downlink beam direction information is used to indicate the downlink beam direction used by the receiving device to send the downlink information to the sending device. The other uplink data includes at least one of an identifier of the sending device, control information, a connection request, and a service data packet.

With reference to the second aspect, in a third implementation of the second aspect, the L frequency domain resource clusters include: two random access resource clusters; the receiving device receives the L types of information sent by the sending device by using the L frequency domain resource clusters, The receiving device receives the random access preamble sent by the sending device by using the first random access resource cluster, and receives other uplink data sent by the sending device by using the second random access resource cluster; where the other uplink data includes the identifier of the sending device, At least one of control information, connection request, and service data packet.

With reference to any one of the second aspect to the third implementation of the second aspect, in a fourth implementation of the second aspect, the first random access resource cluster is a random access resource cluster located in an unlicensed frequency band; A random access resource cluster includes a first time domain resource and a second time domain resource in the time domain; the receiving device receives the random access preamble sent by the sending device by using the first random access resource cluster, including: the receiving device passes the second The time domain resource receives a random access preamble sent by the transmitting device on the second time domain resource.

With reference to any one of the second aspect to the fourth implementation of the second aspect, in a fifth implementation of the second aspect, the random access preamble includes one of the following forms: a cyclic prefix CP, x repetitions First preamble sequence and a guard time GT, x is a positive integer; y repeats the first combination and a GT, the first combination refers to a combination of a CP and a first preamble sequence, y is a positive integer; z The second combination of repetitions, the second combination refers to a CP, a combination of a first preamble sequence and a GT, and z is a positive integer.

With reference to the first implementation of the second aspect or the second implementation of the second aspect, in a sixth implementation of the second aspect, the downlink beam direction information is indicated by an index of the second preamble sequence, and the second preamble sequence is generated. The mode is generated in the same manner as the first preamble sequence in the random access preamble.

With reference to the sixth aspect, the sixth implementation of the second aspect, in the seventh implementation of the second aspect, before the receiving device receives the L types of information sent by the sending device by using the L frequency domain resource clusters, the method further includes: The at least one sending device sends the resource configuration information, the resource configuration information is used to configure the N frequency domain resource clusters, and the at least one sending device includes the sending device; or the receiving device sends the resource configuration information to the sending device, where the resource configuration information is used to send the device to the sending device. Configure L frequency domain resource clusters.

With reference to the seventh implementation of the second aspect, in an eighth implementation of the second aspect, the resource configuration information includes at least one of the following four types of information: a type of information sent by each frequency domain resource cluster Cm; a transmission mode of a frequency domain resource cluster Cm; a set of Mm frequency domain resources included in each frequency domain resource cluster Cm;

The starting position of each frequency domain resource set, the number of frequency domain units included in each frequency domain resource set, and n, at least two kinds of information in the end position of each frequency domain resource set; 1 ≤ m ≤ N , 1 ≤ n ≤ Mm, N ≥ L, Mm is a positive integer; km, n is a positive integer.

With reference to the eighth implementation of the second aspect, in the ninth implementation of the second aspect, the N frequency domain resource clusters Cm configured by the resource configuration information, the at least one frequency domain resource cluster includes at least two frequency domain resource sets. And/or, there is at least one frequency domain resource cluster including one frequency domain resource set; and/or, in the N frequency domain resource clusters, there is a first frequency domain resource cluster and a second random access resource cluster, first The number of frequency domain resource sets in the frequency domain resource cluster is greater than the number of frequency domain resource sets in the second random access resource cluster.

With reference to the fifth implementation of the second aspect, in a tenth implementation of the second aspect, before the receiving device receives the L types of information sent by the sending device by using the L frequency domain resource clusters, the method further includes: sending, by the receiving device, the sending device The resource configuration information includes: at least one of the following information: a repetition number of the first preamble sequence in the random access preamble, a length of the CP, a duration of the first time domain resource, and a duration of the second time domain resource, GT, the form of random access preamble.

With reference to the tenth aspect to the tenth implementation of the second aspect, in the eleventh implementation of the second aspect, in the L kinds of information, the transmission mode of the at least two types of information is the same; and/or, in the L type information There are at least two types of information that have different transmission modes.

With reference to the eleventh implementation of the second aspect, in the twelfth implementation of the second aspect, in the L kinds of information, the transmission mode in which the at least one information exists is the first transmission mode; the first transmission mode refers to The Mi frequency domain units in the same frequency domain resource cluster transmit the same information of the Mi strips, and each frequency domain resource set transmits one piece of information.

With reference to the eleventh implementation of the second aspect, in the thirteenth implementation of the second aspect, in the L kinds of information, the transmission mode in which at least one type of information exists is the second transmission mode; the second transmission mode refers to The Mi frequency domain units in the same frequency domain resource cluster jointly transmit information, and each frequency domain resource set transmits a part of the information.

With reference to any one of the second aspect to the thirteenth implementation of the second aspect, in the fourteenth implementation of the second aspect, the at least two frequency domain resource sets in the L frequency domain resource clusters are in the frequency domain The above is discrete.

The technical effects obtained by the second aspect of the embodiment of the present invention are similar to those obtained by the corresponding technical means in the first embodiment, and are not described herein again.

In a third aspect, an information transmission apparatus is provided, the apparatus comprising: the apparatus comprising at least one unit, the at least one unit is configured to implement the information transmission method provided by any one of the foregoing possible implementation manners of the first aspect .

A fourth aspect provides an information transmission apparatus, the apparatus comprising: the apparatus includes at least one unit, and the at least one unit is configured to implement an information transmission method provided by any one of the foregoing possible implementation manners of the second aspect. .

In a fifth aspect, a transmitting device is provided, the transmitting device comprising: a memory and a processor; the memory storing at least one instruction, the at least one instruction being loaded and executed by the processor to implement the first aspect The information transmission method provided by any of the possible implementations.

In a sixth aspect, a receiving device is provided, the receiving device comprising: a memory and a processor; the memory storing at least one instruction, the at least one instruction being loaded and executed by the processor to implement the second aspect The information transmission method provided by any of the possible implementations.

In a seventh aspect, a computer readable storage medium is provided, wherein the computer readable storage medium stores instructions that, when run on a transmitting device, cause the transmitting device to perform any one of the possible implementations of the first aspect described above The method of information transmission provided by the method.

In an eighth aspect, a computer readable storage medium is provided, wherein the computer readable storage medium stores instructions that, when run on a receiving device, cause the access network device to perform any one of the foregoing second aspects The method of information transmission provided by the implementation.

A ninth aspect, an information transmission system is provided, the system comprising a transmitting device and a receiving device, the transmitting device configured to perform the information transmission method provided by the first aspect; the receiving device is configured to perform the information provided by the second aspect Transmission method.

DRAWINGS

1 is a schematic structural diagram of a mobile communication system according to an exemplary embodiment of the present application;

2 is a flowchart of a random access method according to an exemplary embodiment of the present application;

FIG. 3 is a flowchart of another random access method according to an exemplary embodiment of the present disclosure;

4 is a schematic structural diagram of a terminal provided by an exemplary embodiment of the present application;

FIG. 5 is a schematic structural diagram of an access network device according to an exemplary embodiment of the present disclosure;

FIG. 6 is a flowchart of an information transmission method provided by an exemplary embodiment of the present application; FIG.

FIG. 7 is a schematic diagram of a frequency domain resource cluster provided by an exemplary embodiment of the present application; FIG.

FIG. 8 is a schematic diagram of frequency domain resources in a related art provided by an exemplary embodiment of the present application; FIG.

FIG. 9 is a schematic diagram of a frequency domain resource cluster provided by an exemplary embodiment of the present application; FIG.

FIG. 10 is a schematic diagram of a frequency domain resource cluster provided by an exemplary embodiment of the present application; FIG.

11 is a flowchart of an information transmission method provided by another exemplary embodiment of the present application;

FIG. 12 is a schematic diagram of a frequency domain resource cluster provided by an exemplary embodiment of the present application; FIG.

FIG. 13 is a flowchart of an information transmission method provided by another exemplary embodiment of the present application; FIG.

FIG. 14 is a schematic diagram of a frequency domain resource cluster provided by an exemplary embodiment of the present application; FIG.

FIG. 15 is a flowchart of an information transmission method provided by another exemplary embodiment of the present application; FIG.

16 is a schematic diagram of a frequency domain resource cluster provided by an exemplary embodiment of the present application;

FIG. 17 is a schematic diagram of a first random access resource according to an exemplary embodiment of the present application in a time domain; FIG.

FIG. 18 is a schematic diagram of a first form of random access preamble according to an exemplary embodiment of the present application; FIG.

FIG. 19 is a schematic diagram of a second form of random access preamble according to an exemplary embodiment of the present application; FIG.

20 is a schematic diagram of a third form of random access preamble provided by an exemplary embodiment of the present application;

FIG. 21 is a schematic diagram of resource configuration information provided by an exemplary embodiment of the present application; FIG.

FIG. 22 is a block diagram of an information transmission apparatus according to an embodiment of the present application; FIG.

FIG. 23 is a block diagram of an information transmission apparatus according to an embodiment of the present application.

detailed description

The words "first", "second", and the like, as used herein, are not meant to indicate any order, quantity, or importance, but are used to distinguish different components. Similarly, the words "a" or "an" and the like do not denote a quantity limitation, but mean that there is at least one. The words "connected" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

A "module" as referred to herein generally refers to a program or instruction stored in a memory that is capable of performing certain functions; "unit" as referred to herein generally refers to a functional structure that is logically divided, the "unit" It can be implemented by pure hardware or a combination of hardware and software.

"Multiple" as referred to herein means two or more. "and/or", describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately. The character "/" generally indicates that the contextual object is an "or" relationship.

First, introduce several terms in this article.

Authorized frequency band (or licensed frequency band): refers to the frequency domain resources that can only be used after being approved by the management of the communications industry.

Unlicensed frequency band (or unlicensed frequency band): refers to frequency domain resources that can be directly used without the permission of the management department of the communication industry under the premise of meeting relevant technical requirements, such as the 5 GHz frequency band. The licensed band transmission information can realize the shunting of the network capacity.

The related technical requirements mainly include two types. The first type of requirements does not involve a specific coexistence specification, and mainly limits the transmission power, that is, the transmission power of the access network device and the transmission power of the terminal need to be limited to a preset range. To avoid interference with communication equipment operating in adjacent and shared frequency bands. The second type of requirement sets a specific coexistence specification for coexistence with other radio services such as radiolocation. The coexistence specification includes at least: Transmit Power Control (TPC), Dynamic Frequency Selection (DFS), Occupied Channel Bandwidth (OCB) requirements, and Listen Before Talk (LBT). ,

The specification of the Maximum Channel Occupancy Time (MCOT) requirements.

LBT: For an unlicensed frequency band, each communication device (access network device or terminal) needs to detect whether the current channel is idle before transmitting data on a certain channel, that is, whether other nearby communication devices are occupying the channel to send. Information; if the current channel is detected to be idle for a period of time, the communication device can transmit information on the current channel, but the length of time the communication device is transmitting information is limited, and the limited time range The communication device does not need to perform the process of detecting whether the current channel is idle again; if it detects that the current channel is in the occupied state, the communication device cannot transmit information on the current channel. The process of detecting whether the current channel is idle or not is also referred to as Clear Channel Assessment (CCA). This embodiment does not limit the specific name of the process of detecting whether the current channel is idle.

The OCB requirement is that, in the system bandwidth, for different frequency domain units for transmitting the same piece of information, the span of the different frequency domain units in the system bandwidth reaches a preset standard.

The span of the different frequency domain units in the system bandwidth reaches a preset standard, that is, the difference between the maximum index value of the frequency domain unit and the minimum index value of the frequency domain unit reaches a preset standard; or, different frequency domain units The frequency domain interval between the two reaches the preset standard; or the number of frequency domain units included in the first frequency domain unit to the last frequency domain unit reaches a preset standard.

For example, when the transmitting device and the receiving device use the 60 GHz band to transmit information, (the maximum index value of the frequency domain unit - the minimum index value of the frequency domain unit) / the nominal occupied channel bandwidth ≥ 70% of the nominal occupied channel bandwidth; when transmitting When the device and the receiving device use the 5 GHz band to transmit information, (the maximum index value of the frequency domain unit - the minimum index value of the frequency domain unit) / the nominal occupied channel bandwidth ≥ 80% of the nominal occupied channel bandwidth.

For example, when the transmitting device and the receiving device use the 60 GHz band to transmit information, the number of frequency domain units spaced between the last frequency domain unit and the first frequency domain unit/nominal occupied channel bandwidth ≥ nominal occupied channel bandwidth 70%; when the transmitting device and the receiving device transmit information using the 5 GHz band, the number of frequency domain units spaced between the last frequency domain unit and the first frequency domain unit/nominal occupied channel bandwidth ≥ nominal occupied channel 80% of the bandwidth.

For example, when the transmitting device and the receiving device use the 60 GHz band to transmit information, the number of frequency domain units included in the first frequency domain unit to the last frequency domain unit/nominal occupied channel bandwidth ≥ 70 of the nominal occupied channel bandwidth. %; when the transmitting device and the receiving device use the 5 GHz band to transmit information, the number of frequency domain units included in the first frequency domain unit to the last frequency domain unit/nominal occupied channel bandwidth ≥ 80% of the nominal occupied channel bandwidth .

The nominal occupied channel bandwidth refers to the system bandwidth used when transmitting information, and the nominal occupied channel bandwidth includes 100 frequency domain units, or the nominal occupied channel bandwidth includes other numbers of frequency domain units, and this embodiment is This is not limited.

Optionally, the frequency domain unit is a resource block (RB) on the frequency domain.

MCOT requirement: It refers to the requirement that the length of time for transmitting the same piece of information is less than or equal to MCOT. For example, when the transmitting device and the receiving device transmit information using the 60 GHz band, the MCOT is 9 milliseconds; when the transmitting device and the receiving device use the 5 GHz band to transmit information, the MCOT is 10 milliseconds.

Transmission Opportunity (TxOP): refers to the time that a communication device can continuously use the unlicensed band after it has no need to re-evaluate the channel through the CCA after detecting the opportunity to compete for the unlicensed band through the idle channel. The time unit in the downlink duration may be included in the TxOP; or may only include the time unit in the uplink duration; or may include both the time unit in the downlink duration and the time unit in the uplink duration. . The time unit in the downlink duration refers to a time unit for transmitting downlink data, and the time unit in the uplink duration refers to a time unit used for transmitting uplink data. The TxOP may also be referred to as a Channel Occupancy, or the TxOP may also be referred to as a Maximum Channel Occupancy Time (MCOT), which is not limited in this embodiment.

Licensed Assisted Access (LAA)-Long Term Evolution (LTE) system: means that the licensed and unlicensed bands are combined by Carrier Aggregation (CA) or non-CA. The LTE system used together.

Optionally, when the usage scenario of the LAA-LTE system is a scenario in which the licensed frequency band and the unlicensed frequency band are jointly used by the CA, the cell working in the licensed frequency band is used as the primary cell, and the cell working in the unlicensed frequency band is used as the secondary cell. The primary cell and the secondary cell may be deployed in a common station or in a non-common station, and an ideal backhaul path between the primary cell and the secondary cell.

Optionally, when the usage scenario of the LAA-LTE system is not a scenario in which the licensed band and the unlicensed band are jointly used by the CA, for example, in a dual connectivity (DC) scenario, the cell working on the licensed band is used as the master. A cell that operates on an unlicensed frequency band serves as a secondary cell. There is no ideal backhaul path between the primary cell and the secondary cell. For example, the backhaul delay is large.

Standalone LTE over Unlicensed Spectrum (Standalone ULTE) system on an unlicensed frequency band: refers to a cell that operates independently on an unlicensed frequency band. At this time, the cell operating on the unlicensed frequency band does not need to be assisted by the cell working on the licensed frequency band, and can also provide an independent access function.

Optionally, in the present application, the carrier and the cell are regarded as equivalent concepts, that is, the terminal accesses one carrier and accesses one cell is equivalent.

Optionally, the cell mentioned in this application is a cell corresponding to the access network device, and the cell may belong to the macro access network device, or may belong to the access network device corresponding to the small cell, where the small cell may include : Metro cell, Micro cell, Pico cell, Femto cell, etc. The small cell has the characteristics of small coverage and low transmission power, and is suitable for providing high rate. Data transfer service.

Frequency Division Duplexing (FDD): A technique in which two mutually symmetric frequency channels are used for downlink transmission and uplink transmission, and there is a certain frequency band guard interval between the two channels. Generally, when a transmitting device and a receiving device use FDD technology to transmit information, the channel does not have reciprocity.

Time Division Duplexing (TDD): A technique in which downlink and uplink transmissions are performed using different time slots of the same frequency channel. Generally, when a transmitting device and a receiving device use TDD technology to transmit information, the channel has reciprocity.

Reciprocity of the channel: In the TDD scenario, for the downlink channel for downlink transmission and the uplink channel for uplink transmission, the channel parameters of the uplink channel and the channel parameters of the downlink channel are approximately the same. The channel parameters include a signal-to-noise ratio, a transmission rate, a channel gain, a multipath fading, a beam direction, and the like, which are not limited in this embodiment.

Random Access Preamble: A signal sent by a terminal to an access network device to notify the access network device of terminal access during a random access procedure. In LTE, the random access preamble includes a Cyclic Prefix (CP) and a Preamble Sequence. The cyclic prefix is used to eliminate interference between symbols; the preamble sequence is the essence of the random access preamble, and the preamble sequence is a Zadoff-Chu (ZC) sequence, a longest linear shift register (m sequence), etc., this embodiment This is not limited.

The ZC sequence is divided into two categories: the first type, the sequence generated by cyclic shifting of the base sequence; the second type, the ZC sequence is subjected to DFT transformation, and then the sequence obtained by IFFT transformation is performed. ZC sequences have strong correlation and weak cross-correlation.

The m sequence is a pseudo-random sequence that cannot be predetermined but can be repeatedly generated. The m sequence has strong correlation and strong cross-correlation.

Please refer to FIG. 1 , which is a schematic structural diagram of a mobile communication system provided by an exemplary embodiment of the present application. The mobile communication system may be an LTE system; or may be a LAA-LTE system, a Standalone ULTE system, or a 5G system, and the 5G system is also called a New Radio (NR) system. limited. The mobile communication system includes an access network device 120 and a terminal 140.

The access network device 120 can be a base station, and the base station can be used to convert the received radio frame with the IP packet message, and can also coordinate the attribute management of the air interface. For example, the base station may be an evolved base station (eNB or e-NodeB) in LTE, or a base station gNB in a 5G system that employs a centralized distributed architecture. When the access network device 120 adopts a centralized distributed architecture, it generally includes a central unit (CU) and at least two distributed units (DUs). a centralized data unit is provided with a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, and a Media Access Control (MAC) layer protocol stack; The physical layer (Physical, PHY) protocol stack is provided in the unit. The specific implementation manner of the access network device 120 is not limited in the embodiment of the present invention. Optionally, the access network device may further include a home base station (Home eNB, HeNB), a relay, a pico base station Pico, and the like.

The access network device 120 and the terminal 140 establish a wireless connection through the wireless air interface. Optionally, the wireless air interface is a wireless air interface based on a 5G standard, for example, the wireless air interface is a New Radio (NR); or the wireless air interface may also be a wireless technology based on a 5G-based next-generation mobile communication network technology standard. The air interface; or the wireless air interface may also be a wireless air interface based on the 4G standard (LTE system). The access network device 120 can receive the uplink data sent by the terminal 140 through a wireless connection.

Terminal 140 may refer to a device that is in data communication with access network device 120. The terminal 140 can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal. For example, it can be a portable, pocket, handheld, computer built-in or in-vehicle mobile device. For example, Subscriber Unit, Subscriber Station, Mobile Station, Mobile, Remote Station, Access Point, Remote Terminal An access terminal, a user terminal, a user agent, a user device, or a user equipment (UE). Optionally, the terminal 140 may also be a relay device, which is not limited in this embodiment.

Before establishing a wireless connection between the terminal 140 and the access network device 120, the access network device 120 needs to be accessed.

Optionally, the terminal 140 accesses the access network device 120 in two ways.

The first way: Referring to FIG. 2, the terminal 140 accesses the access network device 120 in four steps (herein referred to as four-step random access).

Step 201, the terminal 140 sends a random access preamble, that is, message 1, to the access network device 120 through the PRACH;

Step 202, the access network device 120 sends a random access response according to the pre-random access terminal 140, the random access response carries the uplink resource allocated by the access network device 120 for the terminal 140, that is, the message 2;

Step 203, the terminal 140 uses the uplink resource allocated in the random access response to send the other uplink data to the access network device 120, the other uplink data carries the identifier of the terminal 140, that is, the message 3;

Step 204: The access network device 120 determines, according to the identifier of the terminal 140, whether there is a conflict. If there is no conflict, the message 140 indicating that the access is successful is sent to the terminal 140. If there is a conflict, the terminal 140 sends a message to the terminal 140. Access failed message 4.

The second way: Referring to FIG. 3, the terminal 140 accesses the access network device 120 in two steps.

Step 301, the terminal 140 sends a random access preamble, that is, message 1, to the access network device 120 through the PRACH;

In step 302, the access network device 120 sends a random access response according to the pre-random access terminal 140. The random access response carries the uplink resource allocated by the access network device 120 for the terminal 140, that is, the message 2.

Optionally, in the second mode, before step 301, the access network device 140 allocates a specific random access preamble to the terminal 120, so that when the terminal 120 sends the specific random access to the access network device 140, When accessing the preamble, the access network device 140 knows which terminal 120 needs access.

Optionally, in the second mode, before step 301, the access network device 140 allocates a transmission resource to the terminal 120, where the transmission resource is used to transmit a random access preamble, so that when the terminal 120 uses the transmission resource When the random access preamble is transmitted, the probability of a contention collision with other terminals 120 is low.

Optionally, before the step 301, the access network device 140 does not allocate the specific random access preamble and/or the transmission resource for transmitting the random access preamble to the terminal 120. At this time, the terminal 120 needs to identify its own. (All or part of the content carried in the original message 3) is carried in the message 1 and sent to the access network device 140. At this time, in addition to carrying the random access preamble, the message 1 carries the identifier of the terminal 120, so that the terminal can implement the contention access in two steps, shortening the time-consuming of the competition access, and satisfying the NR system. Low latency requirements (referred to herein as two-step random access).

It should be noted that, in the mobile communication system shown in FIG. 1, multiple access network devices 120 and/or multiple terminals 140 may be included, and one access network device 120 and one terminal 140 are shown in FIG. For example, this embodiment does not limit this.

Optionally, the device for transmitting information in the terminal 140 and the access network device 120 herein is referred to as a transmitting device, and accordingly, the device for receiving the information is referred to as a receiving device. For example, when the terminal 140 sends the uplink information to the access network device 120, the terminal 140 is the sending device, and the access network device 120 is the receiving device. For example, when the access network device 120 sends the downlink information to the terminal 140, the terminal 140 receives the uplink information. The device, the access network device 120 is a transmitting device.

Please refer to FIG. 4, which is a schematic structural diagram of a terminal provided by an exemplary embodiment of the present application. The access network device may be the terminal 140 in the mobile communication system shown in FIG. 1. This embodiment is described by taking the terminal 140 as an LTE system or a UE in a 5G system. The terminal includes a processor 41, a receiver 42, a transmitter 43, a memory 44, and a bus 45.

The processor 41 includes one or more processing cores, and the processor 41 executes various functional applications and information processing by running software programs and modules.

The receiver 42 and the transmitter 43 can be implemented as a communication component. The communication component can be a communication chip. The communication chip can include a receiving module, a transmitting module, a modem module, etc., for modulating and/or decoding information. Adjust and receive or send this information via wireless signal.

Memory 44 is used to couple to processor 41 via bus 45. The memory 44 stores program instructions and data necessary for the terminal.

The processor 41 is operative to execute program instructions and data in the memory 44 to implement the functions of the various steps in the various method embodiments of the present application.

Optionally, when the sending device is a terminal, the processor 41 controls the receiver 42 by running at least one program instruction in the memory 44 to implement the following steps 1102, 1302, and 1502 (see FIG. 11 to FIG. 15 for details). The embodiment described), and the terminal-side receiving function implied in each step; the processor 41 controls the transmitter 43 to execute steps 602, 1104, 1304, 1504 by running at least one program instruction in the memory 44 (details) The functions of the embodiment shown in FIGS. 6 to 15 and the terminal side transmitting function implied in each step; the processor 41 implements the following steps 601, 1103 by running at least one program instruction in the memory 44. The functions of 1,303, 1503 (see the embodiments described in detail in FIGS. 6 to 15) and the terminal side determining functions implied in the respective steps.

Optionally, when the receiving device is a terminal, the processor 41 controls the receiver 42 to implement the following step 603 (see the embodiment described in detail in FIG. 6) by running at least one program instruction in the memory 44, and each step The receiving function on the terminal side implied in the terminal; the processor 41 controls the transmitter 43 to implement the terminal-side transmitting function implied in the following embodiments by running at least one program instruction in the memory 44.

Moreover, memory 44 can be implemented by any type of volatile or non-volatile memory device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable In addition to Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Disk or Optical Disk.

It will be understood that Figure 4 only shows a simplified design of the terminal. In other embodiments, the terminal may include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all terminals that can implement the present invention are within the scope of the present invention.

Please refer to FIG. 5, which is a schematic structural diagram of an access network device according to an exemplary embodiment of the present application. The terminal may be the network access device 120 in the mobile communication system shown in FIG. 1. In this embodiment, the access network device 120 is used as an eNB in the LTE system, or the gNB in the 5G system is used as an example. The access network device includes: a processor 51, a receiver 52, a transmitter 53, a memory 54, and a bus. 55.

The processor 51 includes one or more processing cores, and the processor 51 executes various functional applications and information processing by running software programs and modules.

The receiver 52 and the transmitter 53 can be implemented as a communication component, and the communication component can be a communication chip, and the communication chip can include a receiving module, a transmitting module, a modem module, etc., for modulating and demodulating information, and The information is received or transmitted via a wireless signal.

Memory 54 is coupled to processor 51 via bus 55. The memory 54 stores program instructions and data necessary for the terminal.

The processor 51 is operative to execute program instructions and data in the memory 54 to implement the functions of the various steps in the various method embodiments of the present application.

Optionally, when the sending device is an access network device, the processor 51 controls the receiver 52 to implement the receiving function of the access network device side implied in each embodiment by running at least one program instruction in the memory 54; The processor 51 controls the transmitter 53 to perform the functions of the following step 602 (see the embodiment described in detail in FIG. 6) by running at least one program instruction in the memory 54; the processor 51 operates at least one program instruction in the memory 54, The functions of the following step 601 (see the embodiment described in detail in FIG. 6) and the determining function of the access network device side implied in each step are implemented.

Optionally, when the receiving device is an access network device, the processor 51 controls the receiver 52 to implement the following steps 603, 1105, 1305, and 1505 by running at least one program instruction in the memory 54 (see FIG. 6 to FIG. The functions of the embodiment described in the above, and the receiving function of the access network device side implied in each step; the processor 51 controls the transmitter 53 to implement the following step 1101 by running at least one program instruction in the memory 54. The function of step 1301, step 1501 (see the embodiment described in detail in FIG. 11 to FIG. 15), and the transmission function of the access network device side implied in each step.

Moreover, memory 54 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable In addition to Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Disk or Optical Disk.

It will be appreciated that Figure 5 only shows a simplified design of the access network device. In other embodiments, the access network device may include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all access network devices that may implement the present invention are in the present invention. Within the scope of protection.

Please refer to FIG. 6 , which is a flowchart of an information transmission method provided by an exemplary embodiment of the present application. The method is applied to the communication system shown in FIG. 1 as an example. The method includes:

Step 601: The transmitting device determines L frequency domain resource clusters, where L is a positive integer.

The frequency domain resource cluster Ci refers to a frequency domain resource used for transmitting information in the system bandwidth. Different frequency domain resource clusters are used to send different types of information. Each frequency domain resource cluster Ci includes Mi frequency domain resource sets, each frequency domain resource set includes ki, j consecutive frequency domain units, 1≤i≤L, 1≤j≤Mi, and Mi is a positive integer, ki , j is a positive integer. The type of information includes at least one of signaling and data.

Where Mi refers to the number of frequency domain resource sets included in the frequency domain resource cluster Ci; ki, j refers to the number of frequency domain units included in the jth frequency domain resource set in the frequency domain resource cluster Ci.

Optionally, the frequency domain unit includes one resource element (Resource Element, RE) in the frequency domain; or the frequency domain unit includes at least two consecutive REs in the frequency domain. Illustratively: the frequency domain unit includes 12 consecutive subcarriers (REs in the frequency domain).

Optionally, in the same frequency domain resource cluster Ci, the number of frequency domain units included in different frequency domain resource sets may be the same or different, which is not limited in this embodiment.

Optionally, when the number of frequency domain resource sets Mi included in the same frequency domain resource cluster Ci is greater than or equal to 2, the adjacent frequency domain resource sets in the frequency domain resource cluster Ci are consecutive in the frequency domain; or The adjacent frequency domain resource sets in the frequency domain resource cluster Ci are discontinuous in the frequency domain.

The adjacent frequency domain resource set refers to: a frequency domain resource set adjacent to the sequence number obtained by arranging each frequency domain resource set in the order of frequency from small to large in the system bandwidth, where the frequency domain resource set is obtained. The sequence number is positively correlated with the average frequency of the frequency domain resource set; or, in the system bandwidth, each frequency domain resource set is arranged in descending order of frequency, and the obtained frequency domain resource set adjacent to the sequence number is obtained, wherein The sequence number of the frequency domain resource set is negatively correlated with the average frequency of the frequency domain resource set.

Referring to FIG. 7, in an illustrative example, the frequency domain resource cluster C1 on the system bandwidth 700 includes three frequency domain resource sets (M1=3), wherein the first frequency domain resource set 701 includes two frequencies. The domain unit (k1, 1=2), the second frequency domain resource set 702 includes 4 frequency domain units (k1, 2=4), and the third frequency domain resource set 703 includes 2 frequency domain units (k1, 3) =2). The first frequency domain resource set 701 and the second frequency domain resource set 702 are consecutive, and the second frequency domain resource set 702 and the third frequency domain resource set 703 are discontinuous.

A transmitting device refers to a communication device for transmitting information. The sending device may be an access network device or a terminal.

When the sending device is an access network device, the receiving device is a terminal. At this time, the sending device determines L frequency domain resource clusters, including: determining L frequency domains from pre-configured or predefined N frequency domain resource clusters. Resource cluster. Where N is an integer greater than or equal to L.

Optionally, the access network device determines, according to at least one of a current load, a distance between the terminal, a channel parameter, and a success rate of the transmission information, the L frequency domain resource clusters from the N frequency domain resource clusters.

It should be noted that when the N frequency domain resource clusters in the access network device are pre-configured, the frequency domain resources occupied by the N frequency domain resource clusters in the system bandwidth may be changed; When the N frequency domain resource clusters in the network device are predefined, the frequency domain resources occupied by the N frequency domain resource clusters in the system bandwidth are fixed.

When the sending device is a terminal, the receiving device is an access network device. At this time, the transmitting device determines L frequency domain resource clusters, including but not limited to the following manners.

In a first mode, the receiving device sends the resource configuration information to the at least one sending device, where the sending device receives the resource configuration information sent by the receiving device, where the resource configuration information is used to configure the N frequency domain resource clusters to the at least one sending device. The transmitting device determines L frequency domain resource clusters from the N frequency domain resource clusters. The sending device that determines the L frequency domain resource clusters is one of the at least one sending device that receives the resource configuration information.

Optionally, in the first mode, the resource configuration information is carried in the system broadcast message. For example, the resource configuration information is carried in a Master Information Block (MIB); for example, the resource configuration information is carried in a System Information Block (SIB).

Optionally, the terminal randomly determines L frequency domain resource clusters from the N frequency domain resource clusters; or the terminal according to at least one of a distance from the access network device, a channel parameter, and a success rate of sending information, L frequency domain resource clusters are determined from N frequency domain resource clusters.

In the second mode, the receiving device sends the resource configuration information to the sending device; the sending device receives the resource configuration information sent by the receiving device, where the resource configuration information is used to configure the L frequency domain resource clusters to the sending device; The information identifies L frequency domain resource clusters.

Optionally, in the second mode, the resource configuration information is carried in the UE-specific signaling, for example, the resource configuration information is carried in a Radio Resource Control Connection Reconfiguration message.

Optionally, in the contention-based random access procedure, the first method is adopted; in the non-contention based random access procedure, the second method is adopted.

The L frequency domain resource clusters determined by the sending device include at least the following two cases.

In the first case, L=1. That is, the transmitting device determines a frequency domain resource cluster. At this time, the same transmitting device uses a frequency domain resource cluster to transmit one type of information. For example, when the sending device is the UE and the receiving device is the gNB, and the UE is in the connected state, if the UE needs to perform the cell handover, the random access preamble is sent by using the frequency domain resource cluster specified by the gNB.

In the second case, L ≥ 2. That is, the transmitting device determines at least two frequency domain resource clusters. At this time, the same transmitting device uses at least two frequency domain resource clusters to transmit at least two kinds of information, wherein different frequency domain resource clusters transmit different kinds of information. For example, when the sending device is the UE and the receiving device is the gNB, and the UE accesses the gNB for the first time, if the UE transmits the random access information through the resources of the high frequency band, the UE uses two frequency domain resource clusters, where the first The frequency domain resource clusters send random access preambles, and the second frequency domain resource clusters send downlink beam direction information.

Step 602: The sending device sends the L types of information to the receiving device by using the L frequency domain resource clusters.

The different frequency domain resource clusters are used to send different types of information. Therefore, the sending device may send L types of information to the receiving device by using the determined L frequency domain resource clusters, where each frequency domain resource cluster corresponds to one type of information. .

Among the L kinds of information, there are at least two types of information having the same transmission mode; and/or, among the L types of information, there are at least two types of information having different transmission modes.

The transmission mode includes two types: a first transmission mode and a second transmission mode.

The first transmission mode means that the same information of the Mi strips is transmitted through the Mi frequency domain units in the same frequency domain resource cluster, and each frequency domain unit transmits one piece of information.

For example, in FIG. 7, the frequency domain resource cluster C1 includes three frequency domain resource sets 701, 702, and 703. If the frequency domain resource cluster C1 uses the first transmission mode to transmit information, each frequency domain resource set transmits the same piece of information. These three frequency domain units transmit three identical messages.

The second transmission mode refers to: jointly transmitting information through Mi frequency domain units in the same frequency domain resource cluster, and each frequency domain unit transmits a part of the information.

Optionally, in the second transmission mode, the number of bits of the partial information transmitted by the different frequency domain resource sets is the same; or, in the second transmission mode, the number of bits of the partial information transmitted by the different frequency domain resource sets is different.

For example, in FIG. 7, the frequency domain resource cluster C1 includes three frequency domain resource sets 701, 702, and 703. If the frequency domain resource cluster C1 uses the second transmission mode to transmit information, each frequency domain resource set transmits a part of a piece of information. The three frequency domain resource sets collectively transmit the same piece of information.

Optionally, the number of bits of information transmitted by different frequency domain units is the same; or, the number of bits of information transmitted by different frequency domain units is different.

It should be noted that when the frequency domain resource cluster includes only one frequency domain resource set, the frequency domain resource cluster transmits information in the first transmission mode in the same manner as the second transmission mode. That is, both the first transmission mode and the second transmission mode transmit information once.

Step 603: The receiving device receives the L types of information sent by the sending device by using the L frequency domain resource clusters.

Receiving, by the receiving device, at least L frequency domain resource clusters for detecting whether there is information; if the receiving device detects L types of information on the L frequency domain resource clusters, receiving the transmission on the L frequency domain resource clusters L kind of information. The L frequency domain resource clusters correspond to the L frequency domain resource clusters that the transmitting device sends the L kinds of information, that is, which frequency domain resource cluster is used by the sending device to send information, and the receiving device receives the corresponding frequency domain resource clusters. information.

In summary, the information transmission method provided by the embodiment of the present invention uses the L frequency domain resource clusters in the system bandwidth to simultaneously transmit L types of information to the receiving device, because each frequency domain resource cluster is used to transmit one type of information. When L is an integer greater than 1, the transmitting device can simultaneously send at least two types of information to the receiving device. When the sending device is the terminal, the receiving device is the access network device, and the terminal sends the L in the process of accessing the access network device. In the case of the information, the L information may include not only the random access preamble but also the downlink beam direction information of the terminal and/or other uplink data, and the terminal is only connected when the random access preamble is sent to the access network device. The network access device cannot obtain downlink beam direction information and/or other uplink data, so that in the random access process of the NR system, the terminal cannot simultaneously transmit multiple types of information, and the terminal in the NR system simultaneously meets the access network. The need for devices to send different types of information.

Optionally, after determining the L frequency domain resource clusters, the sending device uses the L frequency domain resource clusters to send information multiple times when sending information to the receiving device, that is, the sending device does not have to send information before each time. Go to step 601.

Optionally, the steps 601 and 602 can be implemented as a method embodiment on the sending device side separately. The step 603 can be implemented as a method embodiment on the receiving device side, which is not limited in this embodiment.

Optionally, in the related art related to the unlicensed frequency band, when transmitting information between the transmitting device and the receiving device, the OCB requirement needs to be met. In order to meet the OCB requirements, the related art provides the following means of transmitting information.

In the system bandwidth, the frequency domain resources occupied by the same message are repeated multiple times, and the frequency domain resources occupied by each message are separated by the same number of frequency domain units, and the index value of the last frequency domain resource and the first frequency domain are The difference between the index values of the resources reaches the preset standard.

Referring to FIG. 8, the frequency domain resource 81 transmitting the same message on the system bandwidth 800 is repeated 9 times, and the frequency domain resources 81 are separated by 10 frequency domain units, and the index value of the last frequency domain resource 81 is first. The difference between the index values of the frequency domain resources 81 is 88 frequency domain units, and the nominal occupied channel bandwidth is 100 frequency domain units, and the span of the 9 frequency domain resources in the system bandwidth is the nominal occupied channel bandwidth. 88% of the nominal occupied channel bandwidth is 80%, meeting the OCB requirements.

In the related art, since the same piece of information is repeatedly transmitted a plurality of times, as the number of repetitions increases, the utilization of the system bandwidth is reduced.

In the present embodiment, in the present embodiment, based on the information transmission method described in FIG. 6, at least two frequency domain resource sets in the L frequency domain resource clusters determined by the transmitting device are in the frequency domain. The above is discrete. In the at least two frequency domain resource sets discrete in the frequency domain, the index value of the last frequency domain unit in the last frequency domain resource set and the index of the first frequency domain unit in the first frequency domain resource set The difference between the values reaches a preset criterion; or, the frequency domain between the last frequency domain unit in the last frequency domain resource set and the index value of the first frequency domain unit in the first frequency domain resource set The interval reaches a preset standard; or, the number of frequency domain units included in the first frequency domain unit to the last frequency domain unit reaches a preset standard. That is, the frequency domain span of the at least two frequency domain resource sets on the system bandwidth satisfies the OCB requirement.

In addition, in at least two frequency domain resource sets that are discrete in the frequency domain, the frequency domain spacing between different frequency domain resource sets is not fixed, for example, the first frequency domain resource set and the second frequency domain. The frequency domain interval before the resource set is one frequency domain unit, and the frequency domain interval between the second frequency domain resource set and the third frequency domain resource set is two frequency domain units.

In the embodiment of the present application, the L frequency domain resource clusters include two discrete cases to meet the OCB requirements:

In the first case, in the same frequency domain resource cluster, there are at least two frequency domain resource sets that are discrete in the frequency domain.

In this case, the span of at least two frequency domain resource sets in the same frequency domain resource cluster on the system bandwidth satisfies the OCB requirement. For example, when the transmitting device and the receiving device use the 5 GHz band to transmit information, the span of the at least two frequency domain resource sets needs to reach at least 80% of the nominal occupied channel bandwidth.

Referring to FIG. 9, on the system bandwidth 900, the frequency domain resource cluster 91 includes three frequency domain resource sets 92, 93, and 94. The three frequency domain resource sets are discrete in the frequency domain, and the last one of the frequency domain resource sets 94. The difference between the index value of the frequency domain unit and the index value of the first frequency domain unit of the frequency domain resource set 92 is 84, and the nominal occupied channel bandwidth is 100 frequency domain units, and the three frequency domain resource sets are in the system bandwidth. The upper span is 84% of the nominal occupied channel bandwidth, reaching 80% of the nominal occupied channel bandwidth, meeting the OCB requirements. Alternatively, the number of frequency domain units spaced between the last frequency domain unit of the frequency domain resource set 94 and the first frequency domain unit of the frequency domain resource set 92 is 83, and the nominal occupied channel bandwidth is 100 frequency domain units. Then, the span of the three frequency domain resource sets in the system bandwidth is 83% of the nominal occupied channel bandwidth, and reaches 80% of the nominal occupied channel bandwidth, which satisfies the OCB requirement. Alternatively, the frequency domain unit of the first frequency domain unit to the frequency domain resource set 94 of the frequency domain resource set 92 includes 85 frequency domain units, and the nominal occupied channel bandwidth is 100 frequency domain units. The span of the three frequency domain resource sets on the system bandwidth is 85% of the nominal occupied channel bandwidth, reaching 80% of the nominal occupied channel bandwidth, which satisfies the OCB requirement.

In the second case, in the L frequency domain resource clusters, there are at least two frequency domain resource clusters that are discrete in the frequency domain.

In this case, the span of the at least two frequency domain resource clusters on the system bandwidth satisfies the OCB requirement. That is, among the at least two frequency domain resource clusters, the first frequency domain unit of the first frequency domain resource set in the first frequency domain resource cluster and the last frequency domain resource set of the second frequency domain resource cluster The span of the last frequency domain unit in the system bandwidth satisfies the OCB requirements. The first frequency domain resource cluster and the second frequency domain resource cluster are respectively two different frequency domain resource clusters in the at least two frequency domain resource clusters. For example, when the transmitting device and the receiving device use the 5 GHz band to transmit information, the span of the first frequency domain unit and the last frequency domain unit in the system bandwidth needs to reach at least 80% of the nominal occupied channel bandwidth.

Referring to FIG. 10, L frequency domain resource clusters are included in system bandwidth 100, discrete frequency domain resource clusters 101 and frequency domain resource clusters 102 in two frequency domains, and first frequency domain resources of frequency domain resource clusters 101. The first frequency domain unit of the set is the frequency domain unit 103, and the last frequency domain unit of the last domain resource set of the frequency domain resource cluster 102 is the frequency domain unit 104.

The difference between the index value of the frequency domain unit 104 and the index value of the frequency domain unit 103 is 89, and the nominal occupied channel bandwidth is 100 frequency domain units, and the span of the three frequency domain resource sets on the system bandwidth is standard. It is said to occupy 89% of the channel bandwidth and achieve 80% of the nominal occupied channel bandwidth, which satisfies the OCB requirements.

Alternatively, the number of frequency domain units spaced between the frequency domain unit 104 and the frequency domain unit 103 is 88, and the nominal occupied channel bandwidth is 100 frequency domain units, and the span of the three frequency domain resource sets in the system bandwidth is It is 80% of the nominal occupied channel bandwidth, achieving 80% of the nominal occupied channel bandwidth, meeting the OCB requirements.

Alternatively, the number of frequency domain units included in the frequency domain unit 103 to the frequency domain unit 104 is 90, and the nominal occupied channel bandwidth is 100 frequency domain units, and the span of the three frequency domain resource sets on the system bandwidth is marked. It claims to occupy 90% of the channel bandwidth and achieves 80% of the nominal occupied channel bandwidth, meeting the OCB requirements.

In summary, the information transmission method provided by the embodiment of the present invention determines that there are at least two frequency domain resource clusters that are discrete in the frequency domain, so that the transmitting device selects two frequency domains. When the span of the system bandwidth meets the preset standard frequency domain resource set, the OCB requirement for transmitting information in the unlicensed frequency band can be satisfied, and the number of times the transmitting device repeatedly transmits the same type of information is reduced, and the system bandwidth is improved. Utilization of resources.

Optionally, the application scenario of the information transmission method shown in FIG. 6 is different according to different sending devices and receiving devices.

In some examples of the present application, when the sending device is a UE and the receiving device is a gNB, the information transmission method may be applied to a random access scenario, and may also be applied to a sending scenario of uplink data.

Optionally, based on the embodiment described in FIG. 6, the implementation of the information transmission method in the random access scenario is described below. In the NR system, the random access scenario includes at least a four-step random access scenario based on a high frequency band, a two-step random access scenario based on a high frequency band, and a two-step random access scenario based on a high frequency band or a low frequency band. . The following describes the four-step random access scenario in which the information transmission method is applied to the high frequency band according to the embodiment described in FIG. 11; the above information transmission method is applied to the two steps of the high frequency band by using the embodiment described in FIG. The random access scenario is described; the embodiment described in FIG. 15 is used to describe the two-step random access scenario in which the above information transmission method is applied to a high frequency band or a low frequency band.

First: a four-step random access scenario based on high frequency bands.

In the embodiment of the present application, the high frequency band refers to a frequency band whose frequency is greater than a preset frequency point. This embodiment does not limit the specific value of the preset frequency point. For example, the preset frequency is 6 GHz, and at this time, the high frequency band is higher than 6 GHz.

Optionally, the high frequency band refers to a frequency band in which the frequency is in a high frequency range. In this embodiment, the specific value of the high frequency range is not limited, for example, the high frequency range is 6 GHz to 100 GHz, and at this time, it is 6 GHz to 100 GHz. The inner frequency bands are all high frequency bands.

In the high frequency band random access scenario, in order to overcome the high loss defect of high frequency transmission, gNB uses Beam Forming technology to send information to the UE.

Optionally, the gNB uses beamforming technology to send information to the UE, including: the gNB divides the 360 degree transmission angle into s equal small transmission angles, each small transmission angle is 360/s degrees, for each small emission angle. A beam is used to transmit information, and each beam corresponds to one beam index value, and the number of beam index values is s. The beam index value is used to indicate the direction of the corresponding beam transmission information.

For example, the gNB divides the 360-degree transmission angle into 60 equal small transmission angles, each of which has a small transmission angle of 6 degrees. For each small transmission angle, one beam is used to transmit information, and the number of beam index values corresponding to the beam. For 60, the value of the beam index value is [0, 59].

According to the above, before the gNB sends the information to the UE, the gNB needs to know the downlink beam direction information in advance, and send the downlink information to the UE according to the downlink beam direction information. At this time, the UE needs to send the random access preamble to the gNB and the downlink beam direction information to the gNB in the process of accessing the gNB.

The downlink beam direction information is used to indicate a downlink beam direction used by the receiving device to send downlink information to the sending device.

Please refer to FIG. 11 , which is a flowchart of an information transmission method provided by another exemplary embodiment of the present application. This embodiment is applied to the communication system shown in FIG. 1 as an example, and the method includes :

In step 1101, the gNB sends the resource configuration information to the UE.

Optionally, the gNB carries the resource configuration information in the system broadcast message and sends the information to the UE. The gNB carries the resource configuration information in the UE-specific signaling and sends the information to the UE.

Step 1102: The UE receives resource configuration information.

If the gNB carries the resource configuration information in the system broadcast message, the UE receives the N frequency domain resource clusters in the system broadcast message; if the gNB carries the resource configuration information in the UE-specific signaling, the UE receives the UE-specific information. L frequency domain resource clusters in the order.

Step 1103: The UE determines L frequency domain resource clusters.

The L frequency domain resource clusters include two random access resource clusters located in a high frequency band.

Before transmitting the downlink beam direction information to the gNB, the UE needs to determine the downlink beam direction information. The determining, by the UE, the downlink beam direction information includes: receiving, by the UE in different directions, downlink information that is broadcast by the at least one gNB by using a beamforming technology, where the downlink information includes indication information for indicating a beam used by the gNB; The at least one downlink information is used for energy detection, and the downlink beam direction information is determined according to the indication information in the downlink information with the highest energy.

The indication information is a beam index value of a beam used by the gNB.

After determining the downlink beam direction information, the UE indicates the downlink beam direction information by using an index of the second preamble sequence.

Optionally, the second preamble sequence is generated in the same manner as the first preamble sequence in the random access preamble. For example, the first preamble sequence is generated by cyclically shifting the root sequence, and then the second preamble sequence is also generated by cyclically shifting the root sequence.

Optionally, the root sequence used to generate the first preamble sequence is the same as or different from the root sequence used to generate the second preamble sequence.

Optionally, the sequence set of the first preamble sequence is the same as the sequence set of the second preamble sequence; or the sequence set of the first preamble sequence is identical to the sequence set part of the second preamble sequence; or the sequence set of the first preamble sequence It is different from the sequence set of the second preamble sequence.

In an illustrative example, the root sequence of the first preamble sequence and the root sequence of the second preamble sequence are the same, and the UE cyclically shifts the root sequence to obtain 64 preamble sequences; combining the 64 preamble sequences, Obtaining a first sequence set to which the first preamble sequence belongs and a second sequence set to which the second preamble sequence belongs. At this time, the first sequence set and the second sequence set are the same. That is, the first sequence set includes 64 preamble sequences and the second sequence set includes 64 preamble sequences. Each of the first preamble sequences corresponds to an index value. For example, the index value corresponding to the preamble sequence 1 in the first sequence set is 0, and the index value corresponding to the preamble sequence 2 in the first sequence set is 1. Each of the second preamble sequences corresponds to an index value. For example, the index value corresponding to the preamble sequence 1 in the second sequence set is 0, and the index value corresponding to the preamble sequence 2 in the second sequence set is 1.

Optionally, the index of the second preamble sequence is in one-to-one correspondence with the beam index value. For example, the index of the second preamble sequence is 1 and the index of the beam index is 1, the index of the preamble sequence is 60, and the corresponding beam index value is 60. .

Step 1104: The UE sends a random access preamble to the gNB through the first random access resource cluster, and sends downlink beam direction information to the gNB through the second random access resource cluster.

The first random access resource cluster and the second random access resource cluster are two random access resource clusters located in the high frequency band determined by the UE.

Referring to FIG. 12, assume that the UE determines two frequency

domain resource clusters

1201 and 1202 from the system bandwidth 1200.

The frequency domain resource cluster 1201 includes a frequency domain resource set 12011, and the frequency domain resource set includes a frequency domain unit 12012. The transmission mode corresponding to the frequency domain resource cluster 1201 is a second transmission mode, and the UE passes the frequency domain resource cluster 1201. The random access preamble is transmitted.

The frequency domain resource cluster 1202 includes a frequency domain resource set 12021, and the frequency domain resource set includes a frequency domain unit 12022. The transmission mode corresponding to the frequency domain resource cluster 1202 is a second transmission mode, and the UE passes the frequency domain resource cluster 1202. The downlink beam direction information is transmitted.

Step 1105: The gNB receives the random access preamble sent by the UE by using the first random access resource cluster, and receives the downlink beam direction information sent by the UE by using the second random access resource cluster.

In summary, the information transmission method provided by the embodiment of the present invention transmits the random access preamble and the downlink beam direction information to the receiving device by using two frequency domain resource clusters in the random access process, and the two frequency domains. The resource cluster is a resource of a high frequency band, so that the UE and the gNB can randomly transmit the random access preamble and the downlink beam direction information to the gNB, and solve the high frequency scene in the NR. If the UE only sends the random access preamble to the gNB, the gNB cannot know the downlink beam direction information when the downlink information is sent to the UE, and the UE satisfies the gNB in the high frequency random access process of the NR system. The need to send two different types of information.

It should be noted that the scenario in which the channel between the UE and the gNB does not have the channel reciprocity is used in the present embodiment, for example, the scenario in which the information is transmitted between the UE and the gNB through the FDD technology.

Optionally, the embodiment may also be applied to a scenario in which a channel between a UE and a gNB has channel reciprocity, for example, a scenario in which a UE and a gNB transmit information through a TDD technology. The downlink preamble can be used to calculate the downlink beam direction information. Therefore, the UE may send the downlink beam direction information to the gNB, or may not send the downlink beam direction information to the gNB, which is not limited in this embodiment. When the UE sends downlink beam direction information to the gNB, it is the same as the method described in this embodiment.

Optionally, the steps 1102-1104 can be implemented separately as the method embodiment on the UE side; the steps 1101 and 1105 can be implemented as the method embodiment on the gNB side separately, which is not limited in this embodiment.

Second: a four-step random access scenario based on high frequency bands.

In a two-step random access scenario, the UE needs to send its own identity to the gNB, so that when the gNB receives the random access preamble sent by multiple UEs, the gNB resolves the contention conflict according to the identifier. In this process, the UE needs to send the random access preamble and downlink beam direction information to the gNB, and also needs to send other uplink data to the gNB in the process of accessing the gNB.

Optionally, other uplink data includes all or part of the message 3 in the access mode shown in FIG. 2, or other uplink data includes the message 3 and other data except the message 3. Illustratively, other uplink data includes at least one of an identification of a transmitting device, control information, a connection request, and a service data packet.

Optionally, the identifier of the UE is an International Mobile Subscriber Identification Number (IMSI), or is allocated by the gNB, which is not limited in this embodiment.

Please refer to FIG. 13 , which is a flowchart of an information transmission method provided by another exemplary embodiment of the present application. The embodiment is described by using the method in the communication system shown in FIG. 1 , and the method includes :

In step 1301, the gNB sends the resource configuration information to the UE.

Step 1302: The UE receives resource configuration information.

In step 1303, the UE determines L frequency domain resource clusters.

The L frequency domain resource clusters include three random access resource clusters located in the high frequency band.

Step 1304: The UE sends a random access preamble to the gNB through the first random access resource cluster; sends downlink beam direction information to the gNB through the second random access resource cluster; and sends other uplink data to the gNB through the third random access resource cluster. .

The first random access resource cluster, the second random access resource cluster, and the third random access resource cluster are three random access resource clusters located in the high frequency band determined by the UE.

For a description of the description of the downlink beam direction information sent by the sending device to the receiving device, refer to the embodiment shown in FIG. 11 , which is not described herein.

Referring to Figure 14, assume that the UE has determined three frequency

domain resource clusters

1401, 1402, and 1403 from system bandwidth 1400.

The frequency domain resource cluster 1401 includes two frequency domain resource sets 14011 and 14012, the frequency domain resource set 14011 includes one frequency domain unit 140111, and the frequency domain resource set 14012 includes one frequency domain unit 140121, and the frequency domain resource cluster 1401 corresponds to The transmission mode is the first transmission mode, and the UE transmits the random access preamble through the frequency domain resource cluster 1401. At this time, the UE sends two random access preambles on different frequency bands.

The frequency domain resource cluster 1402 includes a frequency domain resource set 14021, and the frequency domain resource set includes a frequency domain unit 140211. The transmission mode corresponding to the frequency domain resource cluster 1402 is a first transmission mode, and the UE passes the frequency domain resource cluster 1402. The downlink beam direction information is transmitted. At this time, the UE only transmits one downlink beam direction information.

The frequency domain resource cluster 1403 includes a frequency domain resource set 14031. The frequency domain resource set includes two frequency domain units 140311. The transmission mode corresponding to the frequency domain resource cluster 1403 is a first transmission mode, and the UE passes the frequency domain resource cluster 1403. Other uplink data is transmitted. At this time, the UE transmits only the other uplink data once.

Step 1305: The gNB receives the random access preamble sent by the UE by using the first random access resource cluster, and receives the downlink beam direction information sent by the UE by using the second random access resource cluster, and receives the downlink information sent by the UE by using the third random access resource cluster. Other upstream data.

In summary, the information transmission method provided by the embodiment of the present invention sends the random access preamble, the downlink beam direction information, and other uplink data to the receiving device in the random access process by using the three frequency domain resource clusters. The frequency domain resource cluster is a resource of the high frequency band, so that when the UE and the gNB communicate with the resource in the high frequency band, the UE can simultaneously send the random access preamble, the downlink beam direction information, and other uplink data to the gNB, and the solution is solved. In the high-frequency two-step random access procedure of the NR system, if the UE can only send the random access preamble to the gNB, the gNB cannot know the downlink beam direction information when the downlink information is sent to the UE, and the gNB cannot acquire the UE. The identification, which cannot solve the problem of competition conflict, satisfies the requirement of sending three different types of information to the gNB in the high-frequency two-step random access process of the NR system.

Optionally, this embodiment may also be applied to a scenario in which a channel between a UE and a gNB has channel reciprocity.

Optionally, the steps 1302-1304 can be implemented separately as the method embodiment on the UE side; the steps 1301 and 1305 can be implemented as the method embodiment on the gNB side separately, which is not limited in this embodiment.

Third, a two-step random access scenario based on a high frequency band or a low frequency band.

If the information between the UE and the gNB is transmitted through the resource in the low frequency band, or the information between the UE and the gNB is reciprocal, the UE may not send the downlink beam direction information to the gNB when transmitting the random access preamble to the gNB. However, if the UE accesses the gNB through the two-step random access mode, the UE needs to send other uplink data to the gNB in addition to the random access preamble to the gNB.

Optionally, the low frequency band is a frequency band lower than the frequency threshold, or the low frequency band is a frequency band in the low frequency range, which is not limited in this embodiment.

The frequency threshold may be the same as the preset frequency, or may be different from the preset frequency. This embodiment does not limit this. For example, the frequency threshold is the same as the preset frequency. 6GHz. In addition, this embodiment does not limit the specific value of the low frequency range, for example, the low frequency range is 4 GHz to 6 GHz. At this time, the frequency band within 4 GHz to 6 GHz is a low frequency band.

Please refer to FIG. 15 , which is a flowchart of an information transmission method provided by another exemplary embodiment of the present application, which is applied to the communication system shown in FIG. 1 according to the embodiment illustrated in FIG. 1 . For example, the method includes:

In step 1501, the gNB sends the resource configuration information to the UE.

Step 1502: The UE receives resource configuration information.

Step 1503: The UE determines L frequency domain resource clusters.

Optionally, in this embodiment, the L frequency domain resource clusters include two random access resource clusters located in the high frequency band, or the L frequency domain resource clusters include two random access resource clusters located in the low frequency band.

Step 1504: The UE sends a random access preamble to the gNB through the first random access resource cluster, and sends other uplink data to the gNB through the second random access resource cluster.

The first random access resource cluster and the second random access resource cluster are two random access resource clusters located in the high frequency band determined by the UE; or, the first random access resource cluster and the second random access The resource cluster is two random access resource clusters located in the low frequency band determined by the UE.

The related content of the other uplink data sent by the UE to the gNB is shown in the embodiment shown in FIG. 13 , and details are not described herein.

Referring to FIG. 16, assume that the UE determines two frequency

domain resource clusters

1601 and 1602 on the system bandwidth 1600.

The frequency domain resource cluster 1601 includes two frequency domain resource sets 16011 and 16012, the frequency domain resource set 16011 includes one frequency domain unit 160111, and the frequency domain resource set 16012 includes one frequency domain unit 160121, and the frequency domain resource cluster 1601 corresponds to The transmission mode is the first transmission mode, and the UE transmits the random access preamble through the frequency domain resource cluster 1601. At this time, the UE sends two random access preambles in different frequency bands.

The frequency domain resource cluster 1602 includes a frequency domain resource set 16021. The frequency domain resource set includes two frequency domain units 160211. The transmission mode corresponding to the frequency domain resource cluster 1602 is a first transmission mode, and the UE passes the frequency domain resource cluster 1602. Other uplink data is transmitted. At this time, the UE transmits only the other uplink data once.

Step 1505: The gNB receives the random access preamble sent by the UE by using the first random access resource cluster, and receives other uplink data sent by the UE by using the second random access resource cluster.

In summary, the information transmission method provided by the embodiment of the present invention sends a random access preamble and other uplink data to a receiving device in a random access process by using two frequency domain resource clusters, so that the UE is randomly connected in two steps. When the inbound mode is connected to the gNB, the random access preamble and other uplink data may be sent to the gNB at the same time, so that the gNB can resolve the contention conflict according to the identifier of the UE in the other uplink data, and the UE can only send the random access preamble to the gNB. The gNB cannot know the identity of the UE, and thus cannot solve the problem of contention conflict, and satisfies the requirement that the UE simultaneously sends different types of information to the gNB in the two-step random access procedure of the NR.

It should be noted that the present embodiment is applied to a high-frequency scenario in which a channel between a UE and a gNB has a channel reciprocity; or, the embodiment applies a scenario in which information is transmitted between a UE and a gNB through a low-frequency band.

This embodiment uses a frequency domain resource cluster to transmit other uplink data as an example. Optionally, when other uplink data includes at least two types of data, for example, other uplink data includes the identifier of the UE and the service data packet, gNB. The configured resource configuration information includes frequency domain resources of at least four frequency domain resource clusters. Correspondingly, the UE selects the at least four frequency domain resource clusters according to the resource configuration information sent by the gNB, where the first frequency domain resource The cluster is used to transmit the random access preamble; the second frequency domain resource cluster is used to transmit the downlink beam direction information; the other at least two frequency domain resource clusters are respectively used to transmit one type of data in other uplink data, for example: A frequency domain resource cluster that transmits the identity of the UE and a frequency domain resource cluster used to transmit the service data packet.

Optionally, the steps 1502-1504 can be implemented separately as the method embodiment on the UE side; the steps 1501 and 1505 can be implemented as the method embodiment on the gNB side separately, which is not limited in this embodiment.

Based on the embodiments shown in Figures 11, 13, and 15, when the UE and the gNB use the frequency domain resource of the unlicensed band to transmit information, it is necessary to perform idle channel detection before transmitting the random access preamble. At this time, in the embodiment shown in FIG. 11, 13, and 15, the first random access resource includes the first time domain resource and the second time domain resource in the time domain; or, the UE sends the first random access resource at the time. The domain is divided into a first time domain resource and a second time domain resource. The first time domain resource is used for the UE to perform idle channel detection, and the second time domain resource is used for transmitting the random access preamble.

Optionally, when the UE selects at least two frequency domain resource clusters to send information, in order to ensure that the UE can be aligned in the time domain when transmitting different information, that is, the UE simultaneously sends multiple pieces of information, therefore, the second random The access resource and/or the third random access resource also includes the first time domain resource and the second time domain resource in the time domain; or the UE may use the second random access resource and/or the third random access resource, It is divided into a first time domain resource and a second time domain resource in the time domain. The first time domain resource is used for the UE to perform the idle channel detection, the second time domain resource in the second random access resource is used to transmit the downlink beam direction information, and the second time domain resource in the third random access resource is used. Used to transmit other upstream data.

Optionally, the first time domain resource and the second time domain resource are in one subframe.

Optionally, the first time domain resource and the second time domain resource are time domain resources in one transmission opportunity.

In the foregoing scenario, the sending device sends the random access preamble to the receiving device by using the first random access resource cluster, where the sending device performs the idle channel detection by using the first time domain resource, and the sending device detects that the idle channel is idle. The random access preamble is sent in the second time domain resource.

The sending device is a UE, and the receiving device is a gNB.

In an implementation manner, the sending device performs the idle channel detection in the first time domain resource, where the UE detects, in the first time domain resource, whether the energy of the channel corresponding to the L frequency domain resource clusters is lower than an energy threshold; The energy threshold indicates that the channel is not occupied by other UEs, and the UE determines that the result of the idle channel detection of the channel is an idle state. At this time, the UE sends a random access preamble in the second time domain resource.

In another implementation manner, the sending device performs the idle channel detection in the first time domain resource, including: the UE detecting, in the first time domain resource, whether the energy of the channel corresponding to the entire system bandwidth is lower than an energy threshold; if the energy is lower than the energy The threshold indicates that the channel is not occupied by other UEs, and the UE determines that the result of the idle channel detection of the channel is an idle state. At this time, the UE sends a random access preamble in the second time domain resource.

Please refer to FIG. 17, which is a schematic structural diagram of a first random access resource in a time domain, where a first time domain resource 1701 is used for idle channel detection, and a second time domain resource 1702 is used for transmitting random access. Leading.

In this embodiment, the random access preamble includes but is not limited to the following three forms.

In the first form, a random access preamble includes: a CP, x repeated first preamble sequences, and a guard time (GT), where x is a positive integer.

Optionally, when the UE and the gNB both use the frequency domain resources of the low frequency band to transmit information; or the channel between the UE and the gNB has reciprocity, and the UE and the gNB both use the high frequency band to transmit information, the x The value is 1; when the channel between the UE and the gNB does not have reciprocity, and the UE and the gNB both transmit information using the frequency domain resource of the high frequency band, the value of x is greater than 1, and the value of the x can be dynamically configured.

The GT is used to eliminate Inter Symbol Interference (ISI), which can be dynamically configured.

Alternatively, the length of the CP can be dynamically configured.

Please refer to FIG. 18, which shows a schematic diagram of a first form of random access preamble, wherein the random access preamble 1800 includes 1 CP1801, 2 repeated first preamble sequences 1802 and one GT 1803.

In the second form, a random access preamble includes: a first combination of y repetitions and a guard time GT, the first combination refers to a combination of a CP and a first preamble sequence, and y is a positive integer.

Optionally, when both the UE and the gNB use the frequency domain resource of the low frequency band to transmit information; or the channel between the UE and the gNB has reciprocity, and the UE and the gNB both use the high frequency band to transmit information, the value of y When the channel between the UE and the gNB does not have reciprocity, and both the UE and the gNB use the frequency domain resource of the high frequency band to transmit information, the value of y is greater than 1, and the value of y can be dynamically configured.

Referring to FIG. 19, a schematic diagram of a second form of random access preamble is illustrated, wherein the random access preamble 1900 includes two repeated first combinations 1901 and one GT 1902.

In the third form, a random access preamble includes: a second combination of z repetitions, and the second combination refers to a combination of a CP, a first preamble sequence, and a guard time GT, and z is a positive integer.

Optionally, when both the UE and the gNB use the frequency domain resource of the low frequency band to transmit information; or the channel between the UE and the gNB has reciprocity, and the UE and the gNB both use the high frequency band to transmit information, the value of z When the channel between the UE and the gNB does not have reciprocity, and the UE and the gNB both transmit information using the frequency domain resource of the high frequency band, the value of z is greater than 1, and the value of z can be dynamically configured.

Referring to FIG. 20, a schematic diagram of a third form of random access preamble is illustrated, wherein the random access preamble 2000 includes 2 repeated second combinations 2001.

It should be additionally noted that “repetition” in this embodiment means that the same information is copied multiple times.

Optionally, in order to meet the MCOT requirement in the unlicensed band scenario, the duration of the first time domain resource and the second time domain resource is less than or equal to the MCOT. Among them, MCOT can be dynamically configured.

Optionally, if the UE and the gNB use the frequency domain resource of the licensed frequency band to transmit information, the duration of the first time domain resource and the second time domain resource does not need to meet the MCOT requirement, and the duration of the first time domain resource is 0.

Optionally, the downlink beam direction information may also be represented by the foregoing three manners, except that in the foregoing three forms, the first preamble sequence becomes the second preamble sequence.

Optionally, the information transmission method in this application is applied to a scenario in which an access network device sends downlink data to a terminal. At this time, the sending device is an access network device, and the receiving device is a terminal. Of course, the information transmission method of the present application can also be applied to other similar information transmission scenarios, which is not limited in this embodiment.

Based on the foregoing embodiments, optionally, when the sending device and the receiving device transmit information through a high frequency unlicensed frequency domain resource, and the sending device accesses the access network device through the four-step random access manner, if the sending device and the receiving device The channel between the receiving devices does not have channel reciprocity, and the transmitting device transmits using the manner of using the frequency domain resources in the embodiment described in FIG. 11 and the manner of using the time domain resources in the embodiment described in FIG. Information, at this time, the duration of the first time domain resource in FIG. 17 is not zero. Optionally, when the sending device and the receiving device transmit information through the high frequency unlicensed frequency domain resource, and the sending device accesses the access network device through the four-step random access procedure, if the channel between the sending device and the receiving device With the channel reciprocity, the transmitting device uses a frequency domain resource cluster and the use of the time domain resource in the embodiment described in FIG. 17 to transmit information. In this case, the duration of the first time domain resource in FIG. 17 is not 0.

Optionally, when the sending device and the receiving device transmit information through the high frequency unlicensed frequency domain resource, and the sending device accesses the access network device through the two-step random access process, if the channel between the sending device and the receiving device Without channel reciprocity, the transmitting device uses the frequency domain resource usage mode in the embodiment described in FIG. 13 and the time domain resource usage mode in the embodiment described in FIG. 17 to transmit information. The duration of the first time domain resource in 17 is not zero.

Optionally, when the sending device and the receiving device transmit information through the high frequency unlicensed frequency domain resource, and the sending device accesses the access network device through the two-step random access manner, if the transmitting device and the receiving device are in the channel With channel reciprocity, the transmitting device uses the frequency domain resource usage manner in the embodiment described in FIG. 15 and the time domain resource usage manner in the embodiment described in FIG. 17 to transmit information. The duration of the time domain resource is not zero.

Optionally, when the sending device and the receiving device transmit information through the frequency domain resource authorized by the high frequency, and the sending device accesses the access network device by using the four-step random access method, if the channel between the sending device and the receiving device is not With channel reciprocity, the transmitting device transmits information using the manner of using the frequency domain resources in the embodiment described in FIG. 11 and the manner of using the time domain resources in the embodiment described in FIG. 17, at this time, FIG. The duration of the first time domain resource is 0.

Optionally, when the sending device and the receiving device transmit information through the frequency domain resource authorized by the high frequency, and the sending device accesses the access network device by using the four-step random access manner, if the channel between the sending device and the receiving device has For channel reciprocity, the transmitting device uses one frequency domain resource and the time domain resource usage mode in the embodiment described in FIG. 17 to transmit information. At this time, the duration of the first time domain resource in FIG. 17 is 0.

Optionally, when the sending device and the receiving device transmit information through the frequency domain resource authorized by the high frequency, and the sending device accesses the access network device by using the two-step random access method, if the channel between the sending device and the receiving device is not With channel reciprocity, the transmitting device transmits information using the manner of using the frequency domain resources in the embodiment described in FIG. 13 and the manner of using the time domain resources in the embodiment described in FIG. 17, and FIG. 17 The duration of the first time domain resource is 0.

Optionally, when the sending device and the receiving device transmit information through the frequency domain resource authorized by the high frequency, and the sending device accesses the access network device by using the two-step random access method, if the channel between the sending device and the receiving device has For channel reciprocity, the transmitting device transmits information using the manner of using the frequency domain resources in the embodiment described in FIG. 15 and the manner of using the time domain resources in the embodiment described in FIG. 17, in which case, FIG. The duration of the first time domain resource is 0.

Optionally, when the sending device and the receiving device transmit information through a low frequency unlicensed frequency domain resource, and the sending device accesses the access network device by using a two-step random access manner, the sending device uses the embodiment described in FIG. The information of the frequency domain resource usage mode and the time domain resource usage mode in the embodiment described in FIG. 17 are used to transmit information. At this time, the duration of the first time domain resource in FIG. 17 is not 0.

Optionally, when the sending device and the receiving device transmit information through a low frequency unlicensed frequency domain resource, and the sending device accesses the access network device by using a four-step random access manner, the sending device uses a frequency domain resource cluster and FIG. The time domain resource in the embodiment is used to transmit information. At this time, the duration of the first time domain resource in FIG. 17 is not 0.

Optionally, when the sending device and the receiving device transmit information through the low frequency authorized frequency domain resource, and the sending device accesses the access network device by using the two-step random access manner, the sending device uses the embodiment in the embodiment described in FIG. The information of the frequency domain resource usage mode and the time domain resource usage mode in the embodiment described in FIG. 17 is used to transmit information. At this time, the duration of the first time domain resource in FIG. 17 is 0.

Optionally, when the sending device and the receiving device transmit information by using a low frequency authorized frequency domain resource, and the sending device accesses the access network device by using a four-step random access manner, the sending device uses a frequency domain resource cluster and FIG. 17 In the embodiment, the time domain resource is used to transmit information. At this time, the duration of the first time domain resource in FIG. 17 is 0.

Based on the scenario of the foregoing information transmission, the sending device needs to receive the resource configuration information sent by the receiving device before determining the L frequency domain resource clusters, and determine L frequency domain resource clusters from the resource configuration information according to the information transmission scenario. Optionally, the resource configuration information includes: frequency domain resource configuration information and time domain resource configuration information.

The frequency domain resource configuration information includes at least one of the following four types of information:

The type of information sent by each frequency domain resource cluster Cm;

The transmission mode of each frequency domain resource cluster Cm;

Mm frequency domain resource sets included in each frequency domain resource cluster Cm;

Where N is the number of frequency domain resource clusters configured by the receiving device. Mm refers to the number of frequency domain resource sets included in the mth frequency domain resource cluster Cm. Km,n refers to the number of frequency domain units included in the nth frequency domain resource set in the mth frequency domain resource cluster Cm.

Optionally, in order to adapt to the high-frequency four-step random access scenario, the type of information sent by the frequency domain resource cluster Cm includes: a random access preamble; or includes downlink beam direction information.

In order to adapt to the high-frequency two-step random access scenario, the type of information sent by the frequency domain resource cluster Cm includes: a random access preamble; or, includes downlink beam direction information; or includes other uplink data.

In order to adapt to the low-frequency four-step random access scenario, the type of information sent by the frequency domain resource cluster Cm includes: a random access preamble.

In order to adapt to the low-frequency two-step random access scenario, the type of information sent by the frequency domain resource cluster Cm includes: a random access preamble; or includes other uplink data.

The transmission mode of the frequency domain resource cluster Cm includes a first transmission mode and a second transmission mode.

Optionally, in order to satisfy a scenario in which the terminal needs to transmit the same information multiple times, the transmission mode in which the at least one frequency domain resource cluster exists is the first transmission mode.

Optionally, the transmission mode in which the at least one frequency domain resource cluster exists is the second transmission mode.

Optionally, in the N frequency domain resource clusters, there are a first frequency domain resource cluster and a second frequency domain resource cluster, where the number of frequency domain resource sets in the first frequency domain resource cluster is greater than the second frequency domain resource cluster. The number of frequency domain resource sets in the middle. If the UE fails to access the gNB multiple times, the UE transmits the random access information (random access preamble, downlink beam direction information, and other uplink data) through the first transmission mode by using at least one first frequency domain resource cluster. At least one of them). The number of frequency domain resource sets included in each of the first frequency domain resource clusters is large. Therefore, for the same type of random access information, the UE can transmit multiple times at the same time, which improves the probability that the UE randomly accesses the gNB.

For example, a certain PRACH resource configured by the gNB for the UE includes one frequency domain resource cluster. The transmission mode of the frequency domain resource cluster is a first transmission mode, and includes two frequency domain resource sets, and the indexes of the two frequency domain resource sets are {0-5} and {42-47}, respectively. When the UE selects the frequency domain resource cluster to transmit the random access preamble, the random access preamble can be transmitted twice at the same time, which improves the probability that the UE accesses the gNB successfully.

Optionally, all the frequency domain resource sets in the N frequency domain resource clusters are equal in size. That is, all the frequency domain resource sets in the N frequency domain resource clusters include the same number of frequency domain units.

Optionally, in order to satisfy a scenario in which the terminal uses one frequency domain resource cluster to transmit information on the unlicensed frequency band, the at least one frequency domain resource cluster includes at least two frequency domain resource sets, where the at least two frequency domain resource sets are in system bandwidth. The span span reaches a preset standard, so that when the terminal uses the frequency domain resource cluster to transmit information, the OCB requirement in the unlicensed band can be met.

Optionally, in order to satisfy a scenario in which the terminal uses multiple frequency domain resource clusters to transmit information on an unlicensed frequency band, there is at least one frequency domain resource cluster including a frequency domain resource set, so that the terminal uses two frequency domain resource clusters. When transmitting two types of information, if two frequency domain resource clusters including only one frequency domain resource set are used to transmit the two types of information, and the spans of the two frequency domain resource clusters reach a preset standard on the system bandwidth, Then, the terminal transmits both kinds of information and meets the OCB requirements in the unlicensed frequency band, thereby improving the utilization of the system bandwidth.

Optionally, the terminal determines the distribution of each frequency domain resource cluster in the system bandwidth by using a starting location of the frequency domain resource set and a number of frequency domain units km and n included in each frequency domain resource set.

The starting position of the frequency domain resource set is determined according to an index value of each frequency domain unit in the system bandwidth.

For example, in the resource configuration information, the frequency domain resource cluster C1 includes two frequency domain resource sets, the first frequency domain resource set has a starting position of 0, and includes six frequency domain units, and then the first frequency domain resource set occupies The frequency domain resource is {0-5}; the starting position of the second frequency domain resource set is 42 and includes 6 frequency domain units, then the frequency domain resource occupied by the second frequency domain resource set is {42-47 }. The distribution of the frequency domain resource cluster C1 in the system bandwidth is {0-5} and {42-47}.

Optionally, the terminal determines the distribution of each frequency domain resource cluster in the system bandwidth by using a starting location of the frequency domain resource set and an ending location of each frequency domain resource set.

The end position of the frequency domain resource set is determined according to an index value of each frequency domain unit in the system bandwidth.

For example, in the resource configuration information, the frequency domain resource cluster C1 includes two frequency domain resource sets. The first frequency domain resource set has a starting position of 0 and an ending position of 5. The first frequency domain resource set occupies the frequency domain resource. It is {0-5}; the starting position of the second frequency domain resource set is 42 and the ending position is 47, then the frequency domain resource occupied by the second frequency domain resource set is {42-47}. The distribution of the frequency domain resource cluster C1 in the system bandwidth is {0-5} and {42-47}.

Optionally, the terminal determines the distribution of each frequency domain resource cluster in the system bandwidth by the number of frequency domain units km, n and the end position of each frequency domain resource set included in each frequency domain resource set.

For example, in the resource configuration information, the frequency domain resource cluster C1 includes two frequency domain resource sets, and the first frequency domain resource set includes six frequency domain units, and the end position is 5, then the frequency domain resources occupied by the first frequency domain resource set. It is {0-5}; the second frequency domain resource set includes 6 frequency domain units, and the end position is 47, then the frequency domain resource occupied by the second frequency domain resource set is {42-47}. The distribution of the frequency domain resource cluster C1 in the system bandwidth is {0-5} and {42-47}.

Optionally, when the receiving device sends the resource configuration information to the sending device, all the frequency domain resources are not allocated to the same type of channel, but a part of the frequency domain resource is reserved for use by other types of channels, for example, a part of the channel is used. The frequency domain resource is allocated to the PRACH channel, and a part of the frequency domain resource is reserved for the physical uplink control channel (PUCCH) channel and/or the physical uplink shared channel (PUSCH) channel.

It should be noted that, in the resource configuration information, the L frequency domain resource clusters selected by the same UE are divided into the same frequency domain resource, and the UE selects the frequency domain resource cluster by selecting different frequency domain resources in the resource configuration information. .

Optionally, the number of frequency domain resource clusters in different frequency domain resources is the same or different.

For example, the resource configuration information includes two frequency domain resources, the first frequency domain resource includes two frequency domain resource clusters, and the second frequency domain resource includes three frequency domain resource clusters. If the UE selects the first frequency domain resource, two frequency domain resource clusters are selected; if the UE selects the second frequency domain resource, three frequency domain resource clusters are selected.

Optionally, in the random access scenario, the time domain resource configuration information includes at least one of the following information: the number of repetitions of the preamble sequence in the random access preamble, the length of the CP, the number of CPs, and the first time domain. The total duration of the resource, the total duration of the second time domain resource, the duration of the GT, and the form of the random access preamble.

Optionally, the form of the random access preamble includes three types, and the three forms are indicated by the form indication information, for example, the form indication information 00 is used to indicate the form of the first random access preamble; the formal indication information 01 is used for The form of the second random access preamble is indicated; the formal indication information 10 is used to indicate the form of the third random access preamble. For another example, the formal indication information “form 1” is used to indicate the form of the first random access preamble; the formal indication information “form 2” is used to indicate the form of the second random access preamble; the formal indication information “form 3” A form used to indicate a third random access preamble. This embodiment does not limit the format of the form indication information.

Optionally, in order to adapt to the high frequency, and the channel between the UE and the gNB does not have reciprocity, the number of repetitions of the preamble sequence is greater than 1.

Optionally, in order to adapt to the unlicensed band scenario, the sum of the duration of the first time domain resource and the duration of the second time domain resource is less than the MCOT.

Schematically, the configuration of the resource configuration information can be implemented by the following information format.

The meanings of the above message format representation are shown in Table 1 below:

Table I:

Optionally, the foregoing information format is only schematic, and the information format is different in different information transmission scenarios.

For example, in a high-frequency grant scenario, and the channel reciprocity between the UE and the gNB; or, in the low-frequency grant scenario, the rootSequenceIndexBeam, zeroCorrelationZoneConfigBeam, prach-PreambleRepeat prach-PreambleRepeat0, prach-ClusterConfigBeam may not be configured in the above information format. .

For example, in the high-frequency unlicensed scenario, if the UE accesses the gNB through the two-step random access mode, the PRACH-ResourceConfig in the above information format can be replaced with the following information format.

It should be noted that the foregoing PRACH interval refers to a resource allocated by the gNB for performing random access, and the PRACH resource refers to a set of multiple frequency domain resource clusters.

The meanings of the above message format are shown in Table 2 below:

Table II:

It should be added that the parameter Ns2 should be configured when the length of the frequency domain resource cluster list PRACH-ClusterConfigList is 2 (Ns=2); otherwise, do not configure.

In order to understand the resource configuration information received by the sending device, the following is an example of the resource configuration information received by the sending device. In the following example, the sending device is a UE, the receiving device is a gNB, and the resource configuration information is used to allocate a random access resource. Since the random access resource is usually a resource in the PRACH channel, the random access resource is simply referred to as a PRACH resource hereinafter. Optionally, in the NR or the next-generation communication system, the random access resource may also be a resource in other channels, which is not limited in this embodiment.

Referring to the system bandwidth 211 shown in FIG. 21, the system bandwidth is divided according to resource configuration information. It is assumed that the system bandwidth has 100 frequency domain units in the frequency domain, and the frequency domain unit index is 0-99. The system bandwidth is divided into 8 PRACH resources in the frequency domain: wherein each PRACH resource is used by at least one UE, and the resource configuration information can be used by at least 8 UEs.

In PRACH resources 1 to 4, each PRACH resource includes three frequency domain resource clusters, which respectively transmit a random access preamble, a downlink transmission beam direction, and other uplink data.

PRACH(1) (frequency domain resource indicated by the left diagonal line in Figure 21):

The PRACH (1, 1) transmission mode is a first transmission mode, and includes one frequency domain resource set, and the frequency domain unit index is {33-38};

The PRACH (1, 2) transmission mode is a first transmission mode, and includes one frequency domain resource set, and the frequency domain unit index is {69-74};

The PRACH (1, 3) transmission mode is the first transmission mode, and includes one frequency domain resource set, and the frequency domain unit index is {0-2}.

PRACH(2) (frequency domain resource indicated by the right diagonal line in Figure 21):

The PRACH (2, 1) transmission mode is a first transmission mode, and includes one frequency domain resource set, and the frequency domain unit index is {3-8};

The PRACH (2, 2) transmission mode is a first transmission mode, and includes one frequency domain resource set, and the frequency domain unit index is {41-46};

The PRACH (2, 3) transmission mode is the first transmission mode, and includes one frequency domain resource set, and the frequency domain unit index is {75-77}.

PRACH(3) (frequency domain resource represented by the vertical line in Figure 21):

The PRACH (3, 1) transmission mode is a first transmission mode, and includes one frequency domain resource set, and the frequency domain unit index is {53-58};

The PRACH (3, 2) transmission mode is a first transmission mode, and includes one frequency domain resource set, and the frequency domain unit index is {80-85};

The PRACH (3, 3) transmission mode is the first transmission mode, and includes one frequency domain resource set, and the frequency domain unit index is {11-13}.

PRACH (4) (frequency domain resources indicated by crossed slashes in Figure 21):

The PRACH (4, 1) transmission mode is the first transmission mode, and includes one frequency domain resource set, and the frequency domain unit index is {14-19};

The PRACH (4, 2) transmission mode is a first transmission mode, and includes one frequency domain resource set, and the frequency domain unit index is {61-66};

The PRACH (4, 3) transmission mode is the first transmission mode, and includes one frequency domain resource set, and the frequency domain unit index is {86-88}.

In the

PRACH resources

5 and 6, each PRACH resource includes two frequency domain resource clusters, and respectively transmits a random access preamble and other uplink data;

PRACH (5) (frequency domain resource indicated by the horizontal line in Figure 21):

The PRACH (5, 1) transmission mode is a first transmission mode, and includes one frequency domain resource set, and the frequency domain unit index is {91-96};

The PRACH (5, 2) transmission mode is the first transmission mode, and includes one frequency domain resource set, and the frequency domain unit index is 22-24}.

PRACH (6) (frequency domain resource represented by the square in Figure 21):

The PRACH (6, 1) transmission mode is the first transmission mode, and includes one frequency domain resource set, and the frequency domain unit index is {25-30};

The PRACH (6, 2) transmission mode is the first transmission mode, and includes one frequency domain resource set, and the frequency domain unit index is {97-99}.

The PRACH resource 7 (the frequency domain resource indicated by the blank part in the figure) includes two frequency domain resource clusters, and respectively transmits the random access preamble and the downlink beam direction information;

The PRACH (7, 1) transmission mode is the second transmission mode, and includes eight frequency domain resource sets, and the frequency domain unit indexes are {9}, {20}, {31}, {39}, {59}, {67, respectively. },{78},{89};

The PRACH (7, 2) transmission mode is the first transmission mode, and includes one frequency domain resource set, and the frequency domain unit index is {47-52}.

The PRACH resource 8 includes one frequency domain resource cluster, and transmits and transmits a random access preamble;

The PRACH (8, 1) transmission mode is the second transmission mode, and includes eight frequency domain resource sets, and the frequency domain unit indexes are {10}, {21}, {32}, {40}, {60}, {68 }, {79}, {90}.

The above PRACH (a, b) refers to the bth frequency domain resource cluster in the a-th PRACH.

The time domain resource 212 corresponding to the frequency domain unit in each frequency domain resource set includes a first time domain resource and a second time domain resource. Optionally, the duration of the first time domain resource may be 0, and the form of the random access preamble transmitted on the second time domain resource may be configured.

Based on the resource configuration information shown in FIG. 21, the

PRACH resources

5 and 6 can be used by a UE that does not need to send downlink beam direction information (for example, a UE that requests uplink resources in a connection state);

PRACH resources

7 and 8 may be used by UEs that do not need to transmit other uplink data (for example, UEs based on non-contention random access);

The PRACH resource 7 can be used by a UE that does not need to transmit other uplink data, but needs to send downlink beam direction information (for example, a UE that needs to adjust the beam direction);

The PRACH resources 1 to 4 can be used by UEs that need to transmit a random access preamble, a downlink transmission beam direction, and other uplink data.

Through the resource allocation mode shown in FIG. 21, 100 frequency domain units on the system bandwidth can be fully utilized to meet the requirements of the high frequency unlicensed frequency band OCB, and different PRACH resources are provided for UEs in different scenarios.

It should be noted that the manner of dividing the PRACH resources in this example is only schematic. In actual implementation, the PRACH resource can be divided into other modes, for example, the second frequency domain resource in the PRACH resource 7. The first frequency domain resource cluster in the cluster and PRACH resource 8 is used as a PRACH resource.

Please refer to FIG. 22, which shows a block diagram of an information transmission apparatus provided by an embodiment of the present application. The information transmission device can be implemented as all or a part of the transmission device in the mobile communication system shown in FIG. 1 by software, hardware, or a combination of both. The information transmission device may include a determining unit 2210, a transmitting unit 2220, and a receiving unit 2230.

The determining unit 2210 is configured to implement the functions of the above steps 601, 1103, 1303, and 1503 and the determining functions implied in the respective steps.

The sending unit 2220 is configured to implement the functions of the foregoing steps 602, 1104, 1304, and 1504 and the sending function implied in each step.

The receiving unit 2230 is configured to implement the functions of the foregoing steps 1102, 1302, and 1502 and the receiving functions implied in the respective steps.

Related details may be combined with the method embodiments described with reference to Figures 6-21.

Alternatively, the determining unit 2210 may be implemented by a processor in the transmitting device executing a corresponding instruction; the transmitting unit 2220 may be implemented by a transmitter in the transmitting device; the receiving unit 2230 may be implemented by a receiver in the transmitting device.

Please refer to FIG. 23, which shows a block diagram of an information transmission apparatus provided by an embodiment of the present application. The information transmission device can be implemented as all or a part of the receiving device in the mobile communication system shown in FIG. 1 by software, hardware or a combination of both. The information transmission device may include a receiving unit 2310 and a transmitting unit 2320.

The receiving unit 2310 is configured to implement the functions of the foregoing steps 603, 1105, 1305, and 1505 and the receiving function implied in each step.

The sending unit 2320 is configured to implement the functions of the foregoing steps 1101, 1301, and 1501 and the sending function implied in each step.

Alternatively, the receiving unit 2310 may be implemented by a receiver in the receiving device; the transmitting unit 2320 may be implemented by a transmitter in the receiving device.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the device and the unit described above may refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above description is only an optional embodiment of the present application, and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application are included in the protection of the present application. Within the scope.

Claims

An information transmission method, characterized in that the method comprises:

The transmitting device determines L frequency domain resource clusters, where L is a positive integer;

Transmitting, by the sending device, the L types of information to the receiving device by using the L frequency domain resource clusters, where each of the frequency domain resource clusters corresponds to one type of the information;

Each of the frequency domain resource clusters Ci includes a set of Mi frequency domain resources, each of the frequency domain resource sets includes ki, j consecutive frequency domain units, 1≤i≤L, 1≤j≤Mi, Mi is a positive integer; ki, j is a positive integer.
The method according to claim 1, wherein the L frequency domain resource clusters comprise: two random access resource clusters located in a high frequency band;

The sending device sends the L types of information to the receiving device by using the L frequency domain resource clusters, including:

The sending device sends a random access preamble to the receiving device by using the first random access resource cluster; and sending downlink beam direction information to the receiving device by using the second random access resource cluster;

The high frequency band refers to a frequency band whose frequency is greater than a preset frequency point, and the downlink beam direction information is used to indicate a downlink beam direction used by the receiving device to send downlink information to the sending device.
The method according to claim 1, wherein the L frequency domain resource clusters comprise: three random access resource clusters located in a high frequency band;

The sending device sends the L types of information to the receiving device by using the L frequency domain resource clusters, including:

Transmitting, by the first random access resource cluster, the random access preamble to the receiving device; sending, by the second random access resource cluster, downlink downlink direction information to the receiving device; and using the third random access resource cluster Sending other uplink data to the receiving device;

The high frequency band refers to a frequency band whose frequency is greater than a preset frequency point, and the downlink beam direction information is used to indicate a downlink beam direction used by the receiving device to send downlink information to the sending device, where the other The uplink data includes at least one of an identifier of the transmitting device, control information, a connection request, and a service data packet.
The method according to claim 1, wherein the L frequency domain resource clusters comprise: two random access resource clusters;

The sending device sends the L types of information to the receiving device by using the L frequency domain resource clusters, including:

The sending device sends a random access preamble to the receiving device by using the first random access resource cluster; and sending other uplink data to the receiving device by using the second random access resource cluster;

The other uplink data includes at least one of an identifier, a control information, a connection request, and a service data packet of the sending device.
The method according to any one of claims 2 to 4, wherein the first random access resource cluster is a random access resource cluster located in an unlicensed frequency band; the first random access resource cluster is in a time domain The first time domain resource and the second time domain resource are included;

The sending device sends a random access preamble to the receiving device by using the first random access resource cluster, including:

The transmitting device performs idle channel detection by using the first time domain resource;

The transmitting device sends the random access preamble in the second time domain resource when the idle channel is detected as an idle state.
The method according to any one of claims 2 to 5, wherein the random access preamble comprises one of the following forms:

a cyclic prefix CP, x repeated first preamble sequences, and a guard time GT, the x being a positive integer;

a first combination of y repetitions and a GT, the first combination being a combination of a CP and a first preamble, the y being a positive integer;

A second combination of z repetitions, the second combination being a combination of a CP, a first preamble, and a GT, the z being a positive integer.
The method according to claim 2 or 3, wherein the downlink beam direction information is indicated by an index of the second preamble sequence, and the second preamble sequence is generated in a manner and the random access preamble A preamble sequence is generated in the same way.
The method according to any one of claims 1 to 7, wherein the transmitting device determines L frequency domain resource clusters, including:

The sending device receives the resource configuration information sent by the receiving device, where the resource configuration information is used to configure N frequency domain resource clusters to the at least one sending device, where the sending device is from the N frequency domain resource clusters, Identifying L frequency domain resource clusters;

or,

The sending device receives the resource configuration information sent by the receiving device, where the resource configuration information is used to configure L frequency domain resource clusters to the sending device; and the sending device determines the L according to the resource configuration information. A frequency domain resource cluster.
The method according to claim 8, wherein the resource configuration information comprises at least one of the following four types of information:

The type of information sent by each of the frequency domain resource clusters Cm;

a transmission mode of each of the frequency domain resource clusters Cm;

a set of Mm frequency domain resources included in each of the frequency domain resource clusters Cm;

At least two information of a starting position of each of the frequency domain resource sets, a number of frequency domain units of each of the frequency domain resource sets, and n, and an ending position of each of the frequency domain resource sets ;

1 ≤ m ≤ N, 1 ≤ n ≤ Mm, N ≥ L, Mm is a positive integer; km, n is a positive integer.
The method according to claim 8, wherein in the N frequency domain resource clusters Cm configured by the resource configuration information,

There is at least one of the frequency domain resource clusters comprising at least two of the frequency domain resource sets; and/or,

There is at least one of the frequency domain resource clusters comprising one of the frequency domain resource sets; and/or,

The first frequency domain resource cluster and the second frequency domain resource cluster are located in the N frequency domain resource clusters, where the number of frequency domain resource sets in the first frequency domain resource cluster is greater than the second frequency domain The number of frequency domain resource sets in the resource cluster.
The method according to claim 6, wherein the transmitting device determines L frequency domain resource clusters, including:

The sending device receives resource configuration information sent by the receiving device, where the resource configuration information includes at least one of the following information:

The number of repetitions of the first preamble sequence, the length of the CP, the number of the CPs, the duration of the first time domain resource, and the duration of the second time domain resource in the random access preamble The duration of the GT and the form of the random access preamble.
A method according to any one of claims 1 to 11, wherein

Among the L kinds of information, there are at least two types of information having the same transmission mode;

and / or,

Among the L types of information, there are at least two types of information that have different transmission modes.
The method of claim 12 wherein:

In the L kinds of information, a transmission mode in which at least one type of information exists is a first transmission mode; and the first transmission mode refers to transmitting, by using the Mi of the frequency domain resource sets in the same frequency domain resource cluster. The same information, each of the frequency domain resource sets transmitting one piece of the information;

and / or,

In the L kinds of information, a transmission mode in which at least one type of information exists is a second transmission mode; and the second transmission mode refers to a common transmission by the Mi of the frequency domain units in the same frequency domain resource cluster. Information that each of the set of frequency domain resources transmits a portion of the information.
An information transmission method, characterized in that the method comprises:

The receiving device receives the L types of information sent by the sending device by using the L frequency domain resource clusters, where each of the frequency domain resource clusters corresponds to one type of the information, where the L is a positive integer;

Each of the frequency domain resource clusters Ci includes a set of Mi frequency domain resources, each of the frequency domain resource sets includes ki, j consecutive frequency domain units, 1≤i≤L, 1≤j≤Mi; Mi is a positive integer; ki, j is a positive integer.
The method according to claim 14, wherein the L frequency domain resource clusters comprise: two random access resource clusters located in a high frequency band;

The receiving device receives the L types of information sent by the sending device by using the L frequency resource clusters, including:

Receiving, by the first random access resource cluster, the random access preamble sent by the sending device, and receiving the downlink beam direction information sent by the sending device by using the second random access resource cluster;

The high frequency band refers to a frequency band whose frequency is greater than a preset frequency point, and the downlink beam direction information is used to indicate a downlink beam direction used by the receiving device to send downlink information to the sending device.
The method according to claim 14, wherein the L frequency domain resource clusters comprise: three random access resource clusters located in a high frequency band;

The receiving device receives the L types of information sent by the sending device by using the L frequency resource clusters, including:

Receiving, by the first random access resource cluster, the random access preamble sent by the sending device; receiving, by the second random access resource cluster, downlink downlink direction information sent by the sending device; and using the third random access The resource cluster receives other uplink data sent by the sending device;

The high frequency band refers to a frequency band whose frequency is greater than a preset frequency point, and the downlink beam direction information is used to indicate a downlink beam direction used by the receiving device to send downlink information to the sending device, where the other The uplink data includes at least one of an identifier of the transmitting device, control information, a connection request, and a service data packet.
The method according to claim 14, wherein the L frequency domain resource clusters comprise: two random access resource clusters;

The receiving device receives the L types of information sent by the sending device by using the L frequency resource clusters, including:

Receiving, by the first random access resource cluster, the random access preamble sent by the sending device, and receiving, by using the second random access resource cluster, other uplink data sent by the sending device;

The other uplink data includes at least one of an identifier, a control information, a connection request, and a service data packet of the sending device.
The method according to any one of claims 15 to 17, wherein the first random access resource cluster is a random access resource cluster located in an unlicensed frequency band; the first random access resource cluster is in a time domain The first time domain resource and the second time domain resource are included;

Receiving, by the first random access resource cluster, the random access preamble sent by the sending device, where the receiving device includes:

Receiving, by the second time domain resource, the random access preamble sent by the sending device on the second time domain resource by using the second time domain resource.
The method according to any one of claims 14 to 18, wherein before the receiving device receives the L types of information sent by the sending device by using the L frequency domain resource clusters, the method further includes:

The receiving device sends resource configuration information to the at least one sending device, where the resource configuration information is used to configure N frequency domain resource clusters, and the at least one sending device includes the sending device;

or,

The receiving device sends resource configuration information to the sending device, where the resource configuration information is used to configure L frequency domain resource clusters to the sending device.
An information transmission device, characterized in that the device comprises:

a determining unit, configured to determine L frequency domain resource clusters, where L is a positive integer;

a sending unit, configured to send L types of information to the receiving device by using the L frequency domain resource clusters, where each of the frequency domain resource clusters corresponds to one type of information;

Each of the frequency domain resource clusters Ci includes a set of Mi frequency domain resources, each of the frequency domain resource sets includes ki, j consecutive frequency domain units, 1≤i≤L, 1≤j≤Mi, Mi is a positive integer; ki, j is a positive integer.
The apparatus according to claim 20, wherein the L frequency domain resource clusters comprise: two random access resource clusters located in a high frequency band;

The sending unit is further configured to:

Transmitting a random access preamble to the receiving device by using the first random access resource cluster; and transmitting downlink beam direction information to the receiving device by using the second random access resource cluster;

The high frequency band refers to a frequency band whose frequency is greater than a preset frequency point, and the downlink beam direction information is used to indicate a downlink beam direction used by the receiving device to send downlink information to the sending device.
The apparatus according to claim 20, wherein the L frequency domain resource clusters comprise: three random access resource clusters located in a high frequency band;

The sending unit is further configured to:

Transmitting a random access preamble to the receiving device by using the first random access resource cluster; transmitting downlink beam direction information to the receiving device by using the second random access resource cluster; and receiving the third random access resource cluster by the third random access resource cluster The device sends other uplink data;

The high frequency band refers to a frequency band whose frequency is greater than a preset frequency point, and the downlink beam direction information is used to indicate a downlink beam direction used by the receiving device to send downlink information to the sending device, where the other The uplink data includes at least one of an identifier of the transmitting device, control information, a connection request, and a service data packet.
The apparatus according to claim 20, wherein the L frequency domain resource clusters comprise: two random access resource clusters;

The sending unit is further configured to:

Transmitting, by the first random access resource cluster, a random access preamble to the receiving device; and sending, by using the second random access resource cluster, other uplink data to the receiving device;

The other uplink data includes at least one of an identifier, a control information, a connection request, and a service data packet of the sending device.
The apparatus according to any one of claims 21 to 23, wherein the first random access resource cluster is a random access resource cluster located in an unlicensed frequency band; the first random access resource cluster is in a time domain The first time domain resource and the second time domain resource are included;

The sending unit is further configured to:

The transmitting device performs idle channel detection by using the first time domain resource;

The transmitting device sends the random access preamble in the second time domain resource when the idle channel is detected as an idle state.
An information transmission device, characterized in that the device comprises:

a receiving unit, configured to receive, by using the L frequency domain resource clusters, the L types of information sent by the sending device, where each of the frequency domain resource clusters corresponds to one type of the information, where the L is a positive integer;

Each of the frequency domain resource clusters Ci includes a set of Mi frequency domain resources, each of the frequency domain resource sets includes ki, j consecutive frequency domain units, 1≤i≤L, 1≤j≤Mi; Mi is a positive integer; ki, j is a positive integer.
The apparatus according to claim 25, wherein the L frequency domain resource clusters comprise: two random access resource clusters located in a high frequency band;

The receiving unit is configured to:

Receiving, by the first random access resource cluster, the random access preamble sent by the sending device, and receiving the downlink beam direction information sent by the sending device by using the second random access resource cluster;

The high frequency band refers to a frequency band whose frequency is greater than a preset frequency point, and the downlink beam direction information is used to indicate a downlink beam direction used by the receiving device to send downlink information to the sending device.
The apparatus according to claim 25, wherein the L frequency domain resource clusters comprise: three random access resource clusters located in a high frequency band;

The receiving unit is configured to:

Receiving, by the first random access resource cluster, the random access preamble sent by the sending device; receiving, by the second random access resource cluster, downlink downlink direction information sent by the sending device; and using the third random access The resource cluster receives other uplink data sent by the sending device;

The high frequency band refers to a frequency band whose frequency is greater than a preset frequency point, and the downlink beam direction information is used to indicate a downlink beam direction used by the receiving device to send downlink information to the sending device, where the other The uplink data includes at least one of an identifier of the transmitting device, control information, a connection request, and a service data packet.
The apparatus according to claim 25, wherein the L frequency domain resource clusters comprise: two random access resource clusters;

The receiving unit is configured to:

Receiving, by the first random access resource cluster, the random access preamble sent by the sending device, and receiving, by using the second random access resource cluster, other uplink data sent by the sending device;

The other uplink data includes at least one of an identifier, a control information, a connection request, and a service data packet of the sending device.
The apparatus according to any one of claims 26 to 28, wherein the first random access resource cluster is a random access resource cluster located in an unlicensed frequency band; the first random access resource cluster is in a time domain The first time domain resource and the second time domain resource are included;

The receiving unit is configured to:

Receiving, by the second time domain resource, a random access preamble sent by the sending device on the second time domain resource.
A transmitting device, comprising: a processor and a memory, wherein the memory stores at least one instruction loaded by the processor and executed to implement the claims 1 to 13 The information transmission method according to any one of the preceding claims.
A receiving device, comprising: a processor and a memory, wherein the memory stores at least one instruction loaded by the processor and executed to implement the claims 14 to 19 The information transmission method according to any one of the preceding claims.
An information transmission system, characterized in that the system comprises a transmitting device and a receiving device;

The transmitting device is the device according to any one of claims 20 to 24; or the transmitting device according to claim 30;

The receiving device is the device according to any one of claims 25 to 29; or the receiving device according to claim 31.
A computer readable storage medium, wherein the storage medium stores at least one instruction, the at least one instruction being loaded and executed by the processor to implement the method of any one of claims 1 to 13. An information transmission method; or an information transmission method according to any one of claims 14 to 19.