CN116548043A

CN116548043A - Communication method and device

Info

Publication number: CN116548043A
Application number: CN202180076306.3A
Authority: CN
Inventors: 余健; 余雅威; 郭志恒
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2023-08-04
Also published as: WO2022151500A1

Abstract

The application relates to the technical field of communication and discloses a communication method and a device, wherein in the method, a terminal device acquires first information, wherein the first information is used for indicating a resource mapping type on a first frequency domain resource, the first frequency domain resource is contained in one Physical Resource Block (PRB), when the frequency domain resource type is the first type, a target resource is determined, and the resource is used for sending or receiving data, wherein the target resource is discontinuous resource on the first frequency domain resource. By adopting the method, the frequency domain resource position of the DMRS can be better matched, the protocol compatibility is ensured, and better channel estimation performance can be obtained. In addition, the resource mapping types on the first frequency domain resource are distinguished, and different resource mapping modes on the first frequency domain resource can be provided for the terminal equipment, so that the frequency domain resource mapping is more flexible.

Description

Communication method and device

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a communications method and apparatus.

Background

In a wireless communication system, the transmission of information from a network device to a terminal device is generally referred to as Downlink (DL) communication, and the transmission of information from a terminal device to a network device is generally referred to as Uplink (UL) communication. Before communication, the terminal device or the network device needs to determine the time and frequency mapping resources, and then send information on the determined mapping resources.

Due to the influence of carrier frequency offset, timing deviation, frequency selective fading of the channel and the like, the signal can be destroyed, so that phase offset and amplitude change are caused, and information reception is further influenced. In order to correctly demodulate the received information, a demodulation reference signal (Demodulation reference signal, DMRS) and corresponding information may be transmitted together and mapped to the same frequency domain resource in the prior art, and then channel estimation is performed based on the DMRS to achieve demodulation of the received information.

However, in the prior art, the resource mapping method is not flexible enough, and further research is still required.

Disclosure of Invention

The application provides a communication method and a communication device, which can flexibly realize resource mapping of channels.

In a first aspect, an embodiment of the present application provides a communication method, which is applied to a terminal device or may also be applied to a chip inside the terminal device. In the method, a terminal device acquires first information, wherein the first information is used for indicating a resource mapping type on a first frequency domain resource, the first frequency domain resource is contained in one Physical Resource Block (PRB), when the frequency domain resource type is the first type, a target resource is determined, and the resource is used for transmitting or receiving data, wherein the target resource is discontinuous resource on the first frequency domain resource.

By adopting the method, the frequency domain resource position of the DMRS can be better matched, the backward compatibility with the traditional terminal equipment can be maintained, the compatibility with the existing protocol is provided, and the better channel estimation performance can be obtained.

In one possible design, determining the target resource includes: determining a target resource according to the second information and the third information;

wherein the second information includes first frequency domain resource indication information; the third information includes at least one of position information of the first subcarrier in the target resource, the number of subcarriers included in the target resource, and a frequency domain interval, and the frequency domain interval represents an interval between two adjacent subcarriers.

In one possible design, the method further comprises: determining a first parameter according to the scaling factor; and determining the number of bits contained in the data according to the first parameter.

In one possible design, the scaling factors include a frequency domain scaling factor β and/or a time domain scaling factor S; first parameter N _info Satisfying one of the following formulas:

N _info ＝β×N _RE ×R×Q _m x v, or

N _info ＝S×N _RE ×R×Q _m X v, or

N _info ＝β×S×N _RE ×R×Q _m ×ν

Wherein R is code rate, Q _m For modulation scheme, v is the number of layers or stream numbers of transmission, N _RE Is the number of resource units used for data transmission in one slot.

Therefore, the terminal equipment can determine the first parameter according to the frequency domain scaling factor and/or the time domain scaling factor, so that the calculated first parameter is more accurate, and the scaling of the time-frequency resource is better matched.

In one possible design, the method further comprises:

determining a time domain resource corresponding to the first frequency domain resource, wherein the time domain resource comprises M time slots, and M is a positive integer;

and when M is more than or equal to 2, determining the target resource corresponding to each time slot of the M time slots.

In one possible design, determining the target resource for each of the M time slots includes:

determining a target resource corresponding to each time slot of the M time slots according to the target resource corresponding to the first time slot of the M time slots and the subcarrier offset value; or alternatively

And determining the target resource corresponding to each time slot of the M time slots according to the first subcarrier position information in the target resource corresponding to the first time slot of the M time slots, the number of subcarriers included in the target resource corresponding to the first time slot of the M time slots, the interval between two adjacent subcarriers in the target resource corresponding to the first time slot of the M time slots and the subcarrier offset value.

Thus, the terminal device can determine the target resource corresponding to each time slot of the M time slots according to the target resource corresponding to the first time slot of the M time slots, thereby saving the configuration signaling overhead.

In one possible design, the first subcarrier location information RE in the target resource corresponding to each of the M time slots _start (i) The formula is satisfied:

or alternatively

Wherein RE _start Representing the position information of the first sub-carrier in the target resource corresponding to the first time slot in M time slots, RE _offset Representing the subcarrier offset value, mod represents a modulo operation,representing a downward rounding, i representing a slot index in 1 radio frame or representing a slot index in M slots;

the number of subcarriers included in the target resource corresponding to each time slot in the M time slots is the number of subcarriers included in the target resource corresponding to the first time slot in the M time slots;

the interval between two adjacent subcarriers in the target resource corresponding to each time slot in the M time slots is the interval between two adjacent subcarriers in the target resource corresponding to the first time slot in the M time slots.

In this way, the terminal device can determine the target resource corresponding to each time slot of the M time slots according to the target resource corresponding to the first time slot of the M time slots, and in addition, the number of subcarriers included in the target resource corresponding to each time slot of the M time slots and the interval between two adjacent subcarriers in the target resource are the same, so that the configuration signaling overhead is saved.

In one possible design, the data bearer is on a physical downlink shared channel PDSCH or a physical uplink shared channel PUSCH.

In one possible design, the data corresponds to the sequence length M of the demodulation reference signal DMRS _ZC 2 or 3 or 4 or 6.

In one possible design, the sequence generation of the demodulation reference signal DMRS satisfies the formula:

wherein the first parameterIs based on the DMRS sequence length M _ZC And a group index u.

In one possible design, obtaining the first information includes:

the first information is obtained from itself or received from the network device.

In one possible design, the method further comprises:

and when the resource mapping type is the second type, determining a target resource on the first frequency domain resource, wherein the target resource is a continuous resource on the first frequency domain resource.

By adopting the method, the resource mapping types on the first frequency domain resource are distinguished, and different resource mapping types on the first frequency domain resource can be provided for the terminal equipment, so that the frequency domain resource mapping is more flexible.

In one possible design, the second information is carried in radio resource control signaling or medium access control signaling or downlink control signaling; the third information is carried in radio resource control signaling or medium access control signaling or downlink control signaling.

In a second aspect, embodiments of the present application provide a communication method that is applied to a network device or may also be applied to a chip inside the network device. In the method, a network device sends first information, wherein the first information is used for indicating a resource mapping type on a first frequency domain resource, and the first frequency domain resource is contained in one Physical Resource Block (PRB); when the resource mapping type is the first type, determining a target resource, and receiving or transmitting data according to the target resource of the target resource, wherein the target resource is discontinuous resource on the first frequency domain resource;

in one possible design, determining the target resource includes: determining a target resource according to the second information and the third information; wherein the second information includes first frequency domain resource indication information; the third information includes at least one of position information of the first subcarrier in the target resource, the number of subcarriers included in the target resource, and a frequency domain interval, and the frequency domain interval represents an interval between two adjacent subcarriers.

In one possible design, the method further comprises: determining a first parameter according to the scaling factor; the number of bits contained in the data is then determined based on the first parameter.

N _info ＝β×N _RE ×R×Q _m x v, or

N _info ＝S×N _RE ×R×Q _m X v, or

N _info ＝β×S×N _RE ×R×Q _m ×ν

Therefore, the terminal equipment can determine the first parameter according to the frequency domain scaling factor and/or the time domain scaling factor, so that the scaling of the time-frequency resource is better matched, and the calculated first parameter is ensured to be more accurate.

In one possible design, the method further comprises: determining a time domain resource corresponding to the first frequency domain resource, wherein the time domain resource comprises M time slots, and M is a positive integer; and when M is more than or equal to 2, determining the target resource corresponding to each time slot of the M time slots.

Thus, it is clear that the terminal device can determine the flow of the target resource corresponding to each time slot of the M time slots according to the target resource corresponding to the first time slot of the M time slots.

or alternatively

In this way, it is clear that the terminal device can determine the specific flow of the target resource corresponding to each time slot of the M time slots according to the target resource corresponding to the first time slot of the M time slots, and in addition, because the number of subcarriers included in the target resource corresponding to each time slot of the M time slots and the interval between two adjacent subcarriers in the target resource are the same, the configuration signaling overhead is saved.

In one possible design, the method further comprises:

In a third aspect, there is provided a communications apparatus comprising means or units for performing the method of any one of the above aspects or any one of the possible implementations of the aspect.

In a fourth aspect, a communication device is provided that includes a processor. The processor is coupled to the memory and operable to execute instructions in the memory to cause the apparatus to perform the method of any one of the above aspects or any one of the possible implementations of that aspect. Optionally, the apparatus further comprises a memory. Optionally, the apparatus further comprises an interface circuit, the processor being coupled to the interface circuit.

In a fifth aspect, there is provided a processor comprising: input circuit, output circuit and processing circuit. The processing circuitry is to receive signals via the input circuitry and to transmit signals via the output circuitry such that the processor performs the method of any one of the above aspects or any one of the possible implementations of that aspect.

In a specific implementation process, the processor may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a trigger, various logic circuits, and the like. The input signal received by the input circuit may be received and input by, for example and without limitation, a receiver, the output signal may be output by, for example and without limitation, a transmitter and transmitted by a transmitter, and the input circuit and the output circuit may be the same circuit, which functions as the input circuit and the output circuit, respectively, at different times. The embodiments of the present application do not limit the specific implementation manner of the processor and the various circuits.

In a sixth aspect, a communication device is provided that includes a processor and a memory. The processor is configured to read instructions stored in the memory and to receive signals via the receiver and to transmit signals via the transmitter to perform the method of any one of the above aspects or any one of the possible implementations of the aspect.

Optionally, the processor is one or more, and the memory is one or more.

Alternatively, the memory may be integrated with the processor or the memory may be separate from the processor.

In a specific implementation process, the memory may be a non-transient (non-transitory) memory, for example, a Read Only Memory (ROM), which may be integrated on the same chip as the processor, or may be separately disposed on different chips.

The processing means in the sixth aspect may be a chip, and the processor may be implemented by hardware or software, and when implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like; when implemented in software, the processor may be a general-purpose processor, implemented by reading software code stored in a memory, which may be integrated in the processor, or may reside outside the processor, and exist separately.

In a seventh aspect, there is provided a computer program product comprising: a computer program (which may also be referred to as code, or instructions) which, when executed, causes a computer to perform the method of any one of the above aspects or any one of the possible implementations of that aspect.

In an eighth aspect, a computer readable medium is provided, which stores a computer program (which may also be referred to as code, or instructions) which, when run on a computer, causes the computer to perform the method of any one of the above aspects or any possible implementation of that aspect.

Drawings

Fig. 1 is a schematic diagram of a network architecture applicable to an embodiment of the present application;

FIG. 2 is a schematic diagram of another network architecture applicable to the embodiments of the present application;

FIG. 3 is a schematic diagram of another network architecture applicable to the embodiments of the present application;

FIG. 4 is a schematic diagram of one method of resource mapping;

FIG. 5 is a schematic diagram of yet another method of resource mapping;

fig. 6 is a flow chart of a resource mapping method according to an embodiment of the present application;

fig. 6a is a schematic diagram of a resource mapping method according to an embodiment of the present application;

FIG. 6b is a schematic diagram of another resource mapping method according to an embodiment of the present disclosure;

FIG. 6c is a schematic diagram of another resource mapping method according to an embodiment of the present disclosure;

FIG. 6d is a schematic diagram of another resource mapping method according to an embodiment of the present disclosure;

fig. 7 is a flowchart of another resource mapping method according to an embodiment of the present application;

Fig. 8 is a schematic diagram of a resource mapping method according to an embodiment of the present application;

fig. 9 is a schematic diagram of another resource mapping method according to an embodiment of the present application;

fig. 10 is a schematic diagram of another resource mapping method according to an embodiment of the present application;

fig. 11 is a schematic diagram of a communication device according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a network device according to an embodiment of the present application;

Detailed Description

the following description of the technical solutions according to the embodiments of the present invention will be given with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

First, some terms in the embodiments of the present application are explained for easy understanding by those skilled in the art.

(1) Terminal equipment: may be a wireless terminal device capable of receiving network device scheduling and indication information, which may be a device providing voice and/or data connectivity to a user, or a handheld device having wireless connection capabilities, or other processing device connected to a wireless modem. The terminal device may communicate with one or more core networks or the internet via a radio access network (radio access network, RAN), and may be a mobile terminal device, such as a mobile phone (or "cellular" phone), a computer and a data card, for example, a portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile device that exchanges voice and/or data with the radio access network. Such as personal communication services (personal communication service, PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal digital assistants (personal digital assistant, PDAs), tablet computers (Pad), computers with wireless transceiver capabilities, and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile Station (MS), remote station (AP), access Point (AP), remote terminal device (remote), access terminal device (access terminal), user terminal device (user terminal), user agent (user agent), user station (subscriber station, SS), user equipment (customer premises equipment, CPE), terminal (terminal), user Equipment (UE), mobile Terminal (MT), etc. The terminal device may also be a wearable device as well as a next generation communication system, e.g. a terminal device in a 5G communication system or a terminal device in a future evolved public land mobile network (public land mobile network, PLMN), etc.

(2) Network equipment: may be a device in a wireless network, for example, a network device may be a radio access network (radio access network, RAN) node (or device), also referred to as a base station, that accesses a terminal device to the wireless network. Currently, some examples of RAN equipment are: a new generation base station (generation Node B, gNodeB), a transmission reception point (transmission reception point, TRP), an evolved Node B (eNB), a radio network controller (radio network controller, RNC), a Node B (Node B, NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (e.g., home evolved NodeB, or home Node B, HNB), a baseband unit (BBU), or a wireless fidelity (wireless fidelity, wi-Fi) Access Point (AP), etc. in a 5G communication system. In addition, in one network structure, the network device may include a Centralized Unit (CU) node, or a Distributed Unit (DU) node, or a RAN device including a CU node and a DU node.

(3) In the embodiment of the application, the terminal device or the network device includes a hardware layer, an operating system layer running above the hardware layer, and an application layer running above the operating system layer. The hardware layer includes hardware such as a central processing unit (central processing unit, CPU), a memory management unit (memory management unit, MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processes through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address book, word processing software, instant messaging software and the like. Further, the embodiment of the present application is not particularly limited to the specific structure of the execution body of the method provided in the embodiment of the present application, as long as the communication can be performed by the method provided in the embodiment of the present application by running the program recorded with the code of the method provided in the embodiment of the present application, and for example, the execution body of the method provided in the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or the network device that can call the program and execute the program.

Furthermore, various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein encompasses a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include, but are not limited to, magnetic storage devices (e.g., hard disk, floppy disk, or magnetic strips, etc.), optical disks (e.g., compact disk, CD, digital versatile disk, digital versatile disc, DVD, etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory, EPROM), cards, sticks, or key drives, etc. Additionally, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

(4) The terms "system" and "network" in embodiments of the present application may be used interchangeably. "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: cases where A alone, both A and B together, and B alone, where A and B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, "at least one of A, B, and C" includes A, B, C, AB, AC, BC, or ABC.

And, unless otherwise specified, references to "first," "second," etc. in the embodiments herein are for distinguishing between multiple objects and not for defining the order, timing, priority, or importance of the multiple objects. For example, the first threshold and the second threshold are merely for distinguishing between different thresholds, and are not intended to represent a difference in priority or importance of the two thresholds.

The technical scheme of the present application is described in further detail below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of a communication system applicable to the embodiment of the present application. As shown in fig. 1, the terminal device 130 may access a wireless network to obtain services of an external network (e.g., the internet) through the wireless network, or communicate with other devices through the wireless network, such as may communicate with other terminal devices. The wireless network comprises a radio access network (radio access network, RAN) device 110 and a Core Network (CN) device 120, wherein the RAN device 110 is configured to access the terminal device 130 to the wireless network, and the CN device 120 is configured to manage the terminal device and provide a gateway for communication with an external network. It should be understood that the number of the respective devices in the communication system shown in fig. 1 is merely illustrative, and the embodiments of the present application are not limited thereto, and more terminal devices 130, more RAN devices 110, and other devices may be further included in the communication system in practical applications.

Fig. 2 is a schematic diagram of another network architecture applicable to the embodiment of the present application. As shown in fig. 2, the network architecture includes CN devices, RAN devices, and terminal devices. The RAN device includes a baseband device and a radio frequency device, where the baseband device may be implemented by one node, or may be implemented by multiple nodes, and the radio frequency device may be implemented independently from the baseband device, or may be integrated in the baseband device, or a part of functions may be integrated independently, and a part of functions may be integrated in the baseband device. For example, in an LTE communication system, a RAN apparatus (eNB) includes a baseband device and a radio frequency device, where the radio frequency device may be remotely located relative to the baseband device, e.g., a remote radio unit (remote radio unit, RRU) is a remote radio unit located relative to the BBU.

The communication between the RAN device and the terminal device follows a protocol layer structure, for example, the control plane protocol layer structure may include functions of a radio resource control (radio resource control, RRC) layer, a packet data convergence layer protocol (packet data convergence protocol, PDCP) layer, a radio link control (radio link control, RLC) layer, a medium access control (media access control, MAC) layer, and a physical layer; the user plane protocol layer structure may include the functions of protocol layers such as PDCP layer, RLC layer, MAC layer, and physical layer; in one possible implementation, a service data adaptation (service data adaptation protocol, SDAP) layer may also be included above the PDCP layer.

The RAN apparatus may implement the functions of protocol layers such as RRC, PDCP, RLC and MAC by one node, or may implement the functions of these protocol layers by a plurality of nodes. For example, in one evolution structure, a RAN device may include a CU) and DUs, a plurality of DUs may be centrally controlled by one CU. As shown in fig. 2, a CU and a DU may be divided according to protocol layers of a wireless network, for example, functions of a PDCP layer and above are set at the CU, and functions of protocol layers below the PDCP layer, for example, functions of an RLC layer and a MAC layer, etc. are set at the DU.

The division of the protocol layer is merely an example, and other protocol layers may be divided, for example, division in the RLC layer, where functions of the RLC layer and above are set in the CU, and functions of the protocol layer below the RLC layer are set in the DU; alternatively, the protocol layer may be divided, for example, by setting a part of functions of the RLC layer and functions of protocol layers above the RLC layer to CU, and setting the remaining functions of the RLC layer and functions of protocol layers below the RLC layer to DU. In addition, the functions that require processing time to meet the latency requirement may be set in the DU and the functions that do not require processing time to meet the latency requirement may be set in the CU in other manners, such as time-lapse partitioning.

In addition, the radio frequency device may be integrated independently, not in the DU, or may be integrated in the DU, or may be partially remote and partially integrated in the DU, without any limitation.

Fig. 3 is a schematic diagram of another network architecture applicable to the embodiment of the present application. With respect to the network architecture shown in fig. 2, the Control Plane (CP) and the User Plane (UP) of the CU may also be implemented in fig. 3 by separating the Control Plane (CP) CU entity (i.e., CU-CP entity) and the User Plane (UP) CU entity (i.e., CU-UP entity), respectively.

In the above network architecture, the signaling generated by the CU may be transmitted to the terminal device through the DU, or the signaling generated by the terminal device may be transmitted to the CU through the DU. The DU may be directly transmitted to the terminal device or CU after being encapsulated by the protocol layer without parsing the signaling. In the following embodiments, transmission or reception of signaling by a DU includes such a scenario if such signaling is involved in the transmission between the DU and the terminal device. For example, the signaling of the RRC or PDCP layer is eventually processed as the signaling of the PHY layer to be transmitted to the terminal device, or is converted from the received signaling of the PHY layer. Under this architecture, the signaling of the RRC or PDCP layer can be considered as being sent by either a DU or a DU and radio frequency loading.

The network architecture illustrated in fig. 1, 2 or 3 may be applied to communication systems of various radio access technologies (radio access technology, RAT), for example, may be an LTE communication system, a 5G (or new radio, NR) communication system, or a transition system between the LTE communication system and the 5G communication system, which may be called a 4.5G communication system, or a future communication system. The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the communication network architecture and the appearance of the new service scenario, the technical solution provided in the embodiments of the present application is also applicable to similar technical problems.

The apparatus in the following embodiments of the present application may be located in a terminal device or a network device according to the functions implemented by the apparatus. When the above CU-DU structure is adopted, the network device may be a CU node, or a DU node, or a RAN device including the CU node and the DU node.

The following describes relevant technical features related to embodiments of the present application. It should be noted that these explanations are for easier understanding of the embodiments of the present application, and should not be construed as limiting the scope of protection claimed in the present application.

1. Demodulation reference signal (Demodulation reference signal, DMRS)

To properly demodulate data carried on a physical channel, DMRS may be used for channel estimation. Since it is not necessary to estimate the channel quality outside the band occupied by the physical channel, the DMRS is generally transmitted together with the corresponding physical channel (uplink physical channel or downlink physical channel) and occupies the same bandwidth.

Specifically, the DMRS configuration information may include the following information:

(1) DMRS type: the Type of the parameter may be Type1 or Type2, and the parameter may be combined with the number of DMRS symbols to determine the number of supported antenna ports;

(2) DMRS time domain position: for indicating the location of the DMRS symbol in the time domain, the time domain location of the DMRS may be determined according to a preamble DMRS symbol configuration (Front-loaded DMRS Symbol) and an additional DMRS symbol (Additional DMRS Symbol) configuration. For example, the Front-loaded DMRS may be configured on the 1 st, 2 nd, or 3 rd, 4 th symbol. In addition, additional DMRS symbols are typically used for channel estimation and demodulation in high-speed mobile scenarios;

(3) Number of symbols: for indicating Single Symbol (Single Symbol) or Double Symbol (Double Symbol).

In addition, in 5G, there is a concept of a Code-domain multiplexing (CDM) group, which means that two or more antenna ports transmit DMRS using the same time-frequency resource but different orthogonal codes, and one CDM group includes a plurality of antenna ports transmitted using the same time-frequency resource; the CDM group number, and the number of antenna ports included in each CDM group may be determined according to the DMRS type and the number of symbols, as shown in tables 1 and 2:

TABLE 1 CDM group information corresponding to DMRS type and number of single symbols

TABLE 2 CDM group information corresponding to DMRS type and double symbol number

2. Antenna port (antenna port): simply referred to as ports. A transmit antenna identified by the receiving end device, or a spatially distinguishable transmit antenna. One antenna port may be configured for each virtual antenna, each virtual antenna may be a weighted combination of multiple physical antennas, and each antenna port may correspond to one reference signal port.

3. Resource mapping (Resource mapping)

The resource mapping refers to allocating bits or modulation symbols to be transmitted to corresponding time and frequency resources for transmission.

As is apparent from the above description of technical features, DMRS is generally transmitted together with a corresponding physical channel (uplink physical channel or downlink physical channel) and covers the same frequency band. The resource mapping is described below by taking the case that DMRS exists in a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH).

In one possible implementation, the network device configures DMRS parameters as follows: the DMRS Type is Type1, the number of symbols is single Symbol, no additional DMRS symbols exist, the number of CDM groups is 2, and the corresponding DMRS Symbol is located at the 1 st Symbol. In coverage limited scenarios, a discrete fourier transform Spread OFDM (Discrete Fourier Transform-Spread OFDM, DFT-S-OFDM) waveform is typically used, and uplink only supports single stream transmission, where DMRS transmission can only be transmitted in CDM group 0 or CDM group 1. Thus, as shown in fig. 4, when the network device schedules 6 subcarriers in the frequency domain and schedules 1 time slot in the time domain, each time slot includes 14 OFDM symbols, if the frequency domain resource still adopts continuous resource mapping, PUSCH data can be mapped to the frequency domain positions with subcarrier indexes of 0 to 5, and DMRS symbols can only be mapped to CDM group 0 (the frequency domain positions with subcarrier indexes of 0, 2 and 4) or CDM group 1 (the frequency domain positions with subcarrier indexes of 1, 3 and 5), since only 3 subcarriers can be used for transmitting DMRS at this time, the density of DMRS is reduced, thereby affecting the performance of channel estimation.

In another possible implementation, the network device configures DMRS parameters as: the DMRS Type is Type1, the number of symbols is single Symbol, no additional DMRS symbols exist, the number of CDM groups is 2, and the corresponding DMRS Symbol is located at the 1 st Symbol. In coverage limited scenarios, a discrete fourier transform Spread OFDM (Discrete Fourier Transform-Spread OFDM, DFT-S-OFDM) waveform is typically used, and uplink only supports single stream transmission, where DMRS transmission can only be transmitted in CDM group 0 or CDM group 1. Thus, as shown in fig. 5, when the network device schedules 6 subcarriers in the frequency domain and schedules 1 time slot in the time domain, each time slot includes 14 OFDM symbols, if the frequency domain resource still adopts continuous resource mapping, PUSCH data can be mapped to the frequency domain positions with subcarrier indexes of 6 to 11, and DMRS symbols can only be mapped to CDM group 0 (the frequency domain positions with subcarrier indexes of 6, 8 and 10) or CDM group 1 (the frequency domain positions with subcarrier indexes of 7, 9 and 11), since only 3 subcarriers can be used for transmitting DMRS at this time, the density of DMRS is reduced, thereby affecting the performance of channel estimation.

Based on this, the embodiment of the application provides a resource mapping method and device, which are used for solving the problem that resource mapping is inflexible and affects channel estimation performance. For example, the resource mapping method provided in the embodiments of the present application may include two possible schemes, which are referred to as scheme one and scheme two for convenience of description.

In the first scheme, the terminal equipment acquires the type of resource mapping on the first frequency domain resource, determines a target resource from the first frequency domain resource by the terminal equipment, maps data to the target resource according to the type of the resource mapping, and further realizes that the same data is received or transmitted by using the target resource; therefore, the frequency domain resource mapping is more flexible by distinguishing the frequency domain resource mapping types, so that the frequency domain resource positions of the existing DMRS are better matched, and better channel estimation performance is obtained.

In the second scheme, the terminal device acquires the subcarrier offset value, and when the terminal device determines that the same data is transmitted or received through a plurality of time slots, the terminal device can determine the target resource on each time slot of the plurality of time slots according to the target resource on the first time slot of the plurality of time slots and the subcarrier offset value, map the data to the target resource according to the type of resource mapping, and then transmit or receive the same data through the plurality of time slots on the determined target resource; therefore, on one hand, the frequency domain resource mapping type is distinguished, so that the frequency domain resource mapping is more flexible, better channel estimation performance is obtained, and on the other hand, the subcarrier offset value is introduced, so that the interference randomization performance is enhanced, and the probability of strong interference of continuity between adjacent cells is reduced.

The method provided in the present application is described below. It should be understood that, in the method embodiments described below, only the execution body is taken as the network device and the terminal device as an example, the network device may be replaced by a chip configured in the network device, and the terminal device may be replaced by a chip configured in the terminal device.

Fig. 6 is a flow chart corresponding to a resource mapping method provided in the embodiment of the present application, where, as shown in fig. 6, the method includes:

s601, the terminal equipment acquires first information, wherein the first information indicates a resource mapping type on a first frequency domain resource.

It can be appreciated that the terminal device determines, according to the first information, a resource mapping type on a first frequency domain resource, where the first frequency domain resource is included in one physical resource block PRB; the "resource mapping type" may be replaced by "resource mapping manner", or "resource mapping information" or other similar concepts, which is not specifically limited.

Illustratively, the resource mapping type includes one of a first type and a second type, and discontinuous resource mapping is employed when the resource mapping type is the first type; when the resource mapping type is the second type, the continuous resource mapping is adopted, otherwise, the description is omitted here. Specifically, if discontinuous resource mapping is adopted, mapped resources are discontinuous on a frequency domain corresponding to one PRB; if continuous resource mapping is adopted, mapped resources are continuous on the frequency domain corresponding to one PRB. The mapped resource is a frequency domain resource scheduled by the network equipment to the terminal equipment.

In this embodiment of the present application, the manner in which the terminal device obtains the first information may be various, and the following description is made with reference to the implementation a1 and the implementation a 2.

Implementation a1: the terminal device acquires from itself. For example, the terminal is obtained by presetting a subscriber identity module (subscriber identity module, SIM) card or presetting first information; in this way, communication resources or signaling costs between the terminal device and the network device can be saved.

Implementation a2: the terminal device acquires the first information from the network device, that is, the terminal device receives the first information sent by the network device, and in this way, the acquisition mode of the first information can be more flexible.

In this implementation, the first information may be carried in a plurality of possible messages, such as a radio resource control (Radio Resource Control, RRC) message, or downlink control information (Downlink Control Information, DCI) or a medium access control (media access control, MAC) Control Element (CE) or other possible messages, which are not specifically limited.

Further, the first information indicates that there are a plurality of specific implementations of the resource mapping type on the first frequency domain resource. As a possible implementation, the first information may include a plurality of bits, and different resource mapping types are indicated by different values of the plurality of bits. For example, the first information may include 1 bit, and the indicated resource mapping type is discontinuous when the bit takes a value of "0", and continuous when the bit is set to "1". As just an example, the number of bits specifically used and the resource mapping types corresponding to different values may not be limited in this embodiment.

As still another possible implementation, the first indication information may indicate different resource mapping types through a bit bitmap, where a correspondence between different bits in the bit bitmap and the resource mapping types may be preset, and when a value of a certain bit is "1", it indicates that resource mapping is performed in a manner corresponding to the bit. For example, the first indication information includes 2 bits, where a first bit of the 2 bits corresponds to a discontinuous manner of the resource mapping type, and a second bit of the 2 bits corresponds to a continuous manner of the resource mapping type, and specifically, if the value of the 2 bits is "10" (i.e., the first bit of the 2 bits is "1" and the second bit is "0"), the resource mapping type is indicated as the discontinuous manner. As just an example, the specific bit map used and the correspondence between the bit map and the resource mapping type may not be limited in the embodiments of the present application.

As yet another possible implementation, the first indication information may include a plurality of fields, and further indicate different resource mapping types by the presence or absence of the plurality of fields. For example, the first indication information may include 1 field, and if the field exists in the first indication information, it indicates that the resource mapping type is discontinuous; if this field does not exist, it indicates that the resource mapping type is a continuous manner, and vice versa. As just an example, the number of fields specifically used and the resource mapping types corresponding to the presence or absence of different fields may not be limited in the embodiment of the present application.

S602, the network equipment sends second information to the terminal equipment, wherein the second information comprises first frequency domain resource indication information.

Correspondingly, the terminal equipment receives the second information sent by the network equipment and determines the first frequency domain resource according to the second information. The first frequency domain resource indication information indicates the first frequency domain resource, and a specific indication mode can be direct indication or indirect indication. Illustratively, the terminal device determines the first frequency domain resource according to the second information in a plurality of ways, and the description of the implementation b1 and the implementation b2 is described below.

Implementation b1: and the terminal equipment directly determines the first frequency domain resource according to the first frequency domain resource indication information included in the second information. That is, the first frequency domain resource indication information is a direct indication, and for example, the first frequency domain resource indication information includes an index of the first frequency domain resource.

For example, the terminal device determines the frequency domain resource corresponding to the first frequency domain resource indication information as the first frequency domain resource. For example, the frequency domain resource corresponding to the first frequency domain resource indication information is a PRB _m (PRB m or m+1th PRB), the terminal device determines the first frequency domain resource as PRB _m 。

Implementation b2: the terminal equipment determines the first frequency domain resource according to the first frequency domain resource indication information included in the second information and the auxiliary parameter. That is, the first frequency domain resource indication information is indirectly indicated, and for example, the first frequency domain resource indication information may include an index of the first frequency domain resource.

In this implementation manner, when the terminal device determines the first frequency domain resource, the virtual first frequency domain resource may be determined according to the first frequency domain resource indication information included in the second information, and then the first frequency domain resource may be determined according to the virtual first frequency domain resource and the auxiliary parameter. In one possible implementation manner, the terminal device removes the frequency domain resource corresponding to the auxiliary parameter from the virtual first frequency domain resource, so as to determine the first frequency domain resource, where it can be understood that the first frequency domain resource is obtained by removing the frequency domain resource corresponding to the auxiliary parameter from the frequency domain resource corresponding to the first frequency domain indication information. Wherein "remove" may be replaced with "snap" or "remove" or "exclude" without limitation of the invention by specific names.

For example, the auxiliary parameter may include silence subcarrier spacing information indicating subcarrier information that cannot be used for the first frequency domain resource, in other words, by this silence subcarrier spacing information, it may be indicated which subcarriers in the frequency domain resource corresponding to the first frequency domain resource indication information cannot be used for the first frequency domain resource. In addition, the muting subcarrier spacing information may include index information of the muting subcarriers or number information of the muting subcarriers.

It is understood that the silence subcarrier spacing information may be 1 or more. Here, the silent subcarrier does not carry any information, and the amplitude after OFDM sampling is 0, in other words, the silent subcarrier has zero power, and has no energy, so that carrier interference between adjacent PRBs due to doppler frequency offset can be reduced. For example, the terminal device may determine, according to a preset rule or a network device indication, that k subcarriers from an upper boundary and/or a lower boundary of the frequency domain resource corresponding to the first frequency domain resource indication information cannot be used for the first frequency domain resource, where k is a number of silent subcarriers included in the silent subcarrier interval information, and PRB _n The upper boundary represents the PRB from the lowest subcarrier number (e.g. subcarrier number 0) _n The lower boundary indicates the highest count of subcarrier numbers (e.g. subcarrier number 11). It will be appreciated that in this example, the network device may send indication information to the terminal device indicating that the silence subcarrier spacing information applies to an upper boundary, or a lower boundary, or a double boundary (upper and lower boundaries).

For example, the frequency domain resource corresponding to the first frequency domain resource indication information is a PRB _n (PRB n or n+1th PRB), the silence subcarrier spacing information indicates that subcarriers 0, 1, 2 and subcarriers 9, 10, 11 cannot be used for the first frequency domain resources, and the terminal device determines that the first frequency domain resources are subcarriers 3, 4, 5, 6, 7, 8. For another example, the frequency domain resource corresponding to the first frequency domain resource indication information is a PRB _n If the silence subcarrier interval is a value of 2, the terminal device may determine that the subcarrier interval is equal to 2 from the PRB according to a preset rule or a network device indication _n The 2 subcarriers counted by the upper boundary and/or the lower boundary cannot be used for the first frequency domain resource.

As just an example, the number and location of the subcarriers indicated by the specific silence subcarrier spacing information may not be limited in the embodiments of the present application.

It should be noted that, the silence subcarrier interval information may also be referred to as "null subcarrier" or "guard subcarrier" or "silence subcarrier information" or "unavailable subcarrier indication information", and the specific name is not limited by the present invention; in addition, "silence subcarrier spacing information indicates subcarrier information that cannot be used for the first frequency domain resource" may be replaced with "silence subcarrier spacing information indicates subcarrier information that cannot be used for data transmission. It can be appreciated that by introducing the silence subcarrier spacing information, carrier interference between adjacent PRBs due to doppler frequency offset can be reduced, thereby improving system performance.

Further, in the two implementations, the second information and the auxiliary parameter may be sent by the same piece of information, for example, the network device sends the second information and the auxiliary parameter by the same message. Alternatively, the second information and the assistance parameter may be sent by different messages, such as the network device sending the second information via message 1 and the assistance parameter via message 2. Message 1 and message 2 may be understood as at least one of a radio resource control (radio resource control, RRC) message, a medium access control element (medium access control control element, MAC CE), or downlink control information (downlink control information, DCI).

And S603, the network equipment sends third information to the terminal equipment.

Accordingly, the terminal device receives third information sent by the network device, wherein the third information includes a parameter for determining a position of the target resource in the first frequency domain resource.

Here, the third information may include a variety of possible parameters for determining the location of the target resource in the frequency domain resource, which are described below in connection with examples 1 and 2.

Example a1: the third information comprises at least one of position information of a first subcarrier in the target resource, the number of subcarriers included in the target resource and a frequency domain interval, wherein the frequency domain interval represents an interval between two adjacent subcarriers.

It will be appreciated that (1) the first subcarrier location information in the target resource may be an absolute value or a relative value. Such as: the third information includes an absolute index value of the first subcarrier, and the terminal device may determine a position of the first subcarrier according to an index lookup table, where, for example, a relationship between the position of the first subcarrier and the corresponding index value is shown in table 1; for another example, the third information includes location information of the first subcarrier relative to a reference subcarrier, where the reference subcarrier may be preset by a protocol or the network device indicates the terminal device. (2) The number of subcarriers included in the target resource may be indicated by an index, for example, the terminal device may determine, by looking up a table, the number of subcarriers included in the target resource according to an index value of the number of subcarriers transmitted by the network device, and for example, a relationship between the number of subcarriers included in the target resource and the corresponding index value is shown in table 2 or table 3, and which table is specifically used may be predefined by a protocol or indicated by the network device. (3) the frequency domain interval may be 0 or one or more values: when the frequency domain interval is 0 values, it can be understood that the network device is not configured with the frequency domain interval, and the subcarriers corresponding to the target resources are continuous in the frequency domain; when the frequency domain interval is a value, the subcarriers corresponding to the target resources are distributed at equal frequency domain intervals, and the interval between the subcarriers corresponding to the two adjacent target resources is equal to the frequency domain interval; when the frequency domain interval is a plurality of values, the subcarriers corresponding to the target resource are distributed at unequal frequency domain intervals; the number of network-indicated frequency-domain intervals is related to the number of subcarriers comprised by the target resource, e.g. the number of network-indicated frequency-domain intervals may be one less than the number of subcarriers comprised by the target resource.

TABLE 1

TABLE 2

Index value	The number of sub-carriers included in the target resource
00	1
01	3
10	6
11	12

TABLE 3 Table 3

Index value	The number of sub-carriers included in the target resource
00	1
01	4
10	8
11	12

For example a1, when the terminal device determines the target resource, three parameters including the position information of the first subcarrier in the target resource, the number of subcarriers included in the target resource, and the frequency domain interval are needed, but the three parameters may be acquired by the terminal device itself or acquired from the network device, where if the terminal device itself acquires, the terminal device may acquire the three parameters by presetting a subscriber identity module (subscriber identity module, SIM) card, or by presetting a protocol, etc.; in this way, communication resources or signaling overhead between the terminal device and the network device can be saved. If the terminal device is acquired from the network device, it may be acquired through the third information. It can be understood that, when the third information includes one or two of the three parameters including the first subcarrier location information, the number of subcarriers included in the target resource, and the frequency domain interval, other parameters of the three parameters may be acquired by the terminal device itself or otherwise, which is not limited by the present invention.

For example, if the terminal device directly determines the first frequency domain resource according to the first frequency domain resource indication information included in the second information, the third information includes the position information of the first subcarrier in the target resource, the number of subcarriers included in the target resource, and the frequency domain interval. As shown in fig. 6a, when the first frequency domain resource indication information indicates one PRB, that is, the first frequency domain resource is 12 subcarriers, the first carrier position information indicates that the first subcarrier position is subcarrier 0, the number of subcarriers included in the target resource is 6, and the frequency domain interval is 2, according to the above method, subcarrier 0, subcarrier 2, subcarrier 4, subcarrier 6, subcarrier 8, subcarrier 10, and subcarrier 12 can be obtained as target resources.

For another example, if the terminal device indirectly determines the first frequency domain resource according to the first frequency domain resource indication information included in the second information and the pre-acquired silence subcarrier interval information, the third information includes the first subcarrier position information in the target resource and the number of subcarriers included in the target resource. As shown in fig. 6b, when the silence subcarrier spacing information indicates that the subcarriers 0, 1, 10 and 11 cannot be used for the first frequency domain resources, the first frequency domain resources are the subcarriers 3 to 8, and if the first subcarrier location information indicates that the first subcarrier location is the subcarrier 3 and the number of subcarriers included in the target resource is 6, according to the above method, the continuous subcarriers from the subcarrier 2 to the subcarrier 10 can be obtained as the target resource.

Example a2: the third information includes location information of each subcarrier in the target resource in the first frequency domain resource.

For example, the third information may indicate the location information of each subcarrier location in the target resource in the first frequency domain resource by a bit map, where a correspondence between different bits in the bit map and subcarrier locations in the first frequency domain resource may be preset. When the value of a certain bit is 1, the subcarrier position corresponding to the bit can be used as a target resource; for example, as shown in fig. 6c, if the first frequency domain resource includes 12 subcarriers, the third information may include 12 bits, where the 12 bits respectively correspond to the 12 subcarriers of the first frequency domain resource, the 12 subcarrier numbers are subcarrier 0 to subcarrier 11, and if the 1 st bit, the 3 rd bit, the 7 th bit, and the 11 th bit in the 12 bits are "1", it means that subcarrier 0, subcarrier 2, subcarrier 6, and subcarrier 10 are target resources. As another example, as shown in fig. 6d, by implementing b2 in S602, it is determined that the first frequency domain resource is a subcarrier 3, 4, 5, 6, 7, 8, in which case the third information may include 6 bits, where the 6 bits respectively correspond to the 6 subcarriers of the first frequency domain resource, and if the 1 st bit, the 3 rd bit, and the 6 th bit in the 6 bits have a value of "1", it indicates that the corresponding subcarriers are target resources, that is, subcarrier 3, subcarrier 5, and subcarrier 8 are target resources.

Further, in both examples, the third information may be carried in a radio resource control (radio resource control, RRC) message, or a medium access control element (medium access control control element, MAC CE), or downlink control information (downlink control information, DCI).

It should be noted that, S603 may be performed before S602, or S602 and S603 may be performed simultaneously, or S601 may be performed after S603, and the sequence of S601, S602 and S603 is not limited in this embodiment.

S604, when the resource type is the first type, determining a target resource according to the second information and the third information.

In this step, when the resource type is the first type, a target resource is determined, where the target resource is a discontinuous resource on the first frequency domain resource, and the specific determining manner is the same as description and examples of the second information and the third information in S602 and S603, which are not described herein again.

S605 determines the number of bits included in the data carried by the target resource.

In the embodiment of the present application, the terminal device may determine the number of bits of the data packet carried by the target resource by:

step 1, the number of Resource Elements (REs) in each Resource block (Physical Resource block, PRB) in the scheduled slot is calculated.

Wherein,indicating that one PRB includes 12 subcarriers in the frequency domain,representing allocation to PUSCThe number of OFDM symbols of H,for the number of REs included in a DMRS code division multiplexing group (Code division multiplexing, CDM) without data transmission,the overhead configured for higher layer signaling takes a value of 6, 12, or 18. If not configured, thenThe value of (2) is 0.

Step 2, the total RE quantity of the scheduling resources allocated by the scheduled time slot for the terminal, namely the RE quantity for PUSCH transmission, is calculated.

N _RE ＝min(156,N' _RE )·n _PRB

Wherein n is _PRB For the number of PRBs allocated to the terminal.

Step 3, calculating the number of information bits (or first parameter) which can be transmitted

In a possible implementation, the first parameter is determined according to a scaling factor, which comprises a frequency domain scaling factor β and/or a time domain scaling factor S.

Specifically, the terminal device may determine the first parameter according to one of the following formulas:

N _info ＝β×N _RE ×R×Q _m x v, or

N _info ＝S×N _RE ×R×Q _m X v, or

N _info ＝β×S×N _RE ×R×Q _m ×ν

Wherein R is code rate, Q _m For modulation scheme, v is the number of layers or stream numbers of transmission, N _RE Is one ofThe number of resource units used for the data transmission in each time slot.

And 4, calculating the size (Transport Block Size, TBS) of the transmission block according to the number of information bits (or first parameter).

For example, the detailed process of calculating the TBS according to the number of information bits (or the first parameter) may refer to the implementation method in the prior art, and the present invention is not limited to specific implementation.

S606, data is sent or received according to the target resource.

In one possible implementation, the terminal device sends or receives data according to a target resource, where the data is carried on a physical downlink shared channel PDSCH or a physical uplink shared channel PUSCH.

For example, when preparing the data to be sent, the terminal device may map the data to be sent onto the subcarrier corresponding to the target resource according to the resource mapping type obtained in step S601, and send or receive the data on the time domain resource corresponding to the first frequency domain resource indication information. For example, if the first frequency domain resource indication information is carried in the DCI and the time domain resource corresponding to the first frequency domain resource indication information is slot 1, the terminal device sends or receives data according to the target resource in slot 1.

In addition, the data may also be carried in a physical downlink control channel PDCCH or a physical uplink control channel PUCCH or other physical channels, which is not particularly limited by the present invention.

In yet another possible implementation manner, the terminal device transmits or receives data according to the target resource, and simultaneously transmits or receives the demodulation reference signal DMRS according to the target resource.

Illustratively, the data corresponds to a demodulation reference signal DMRS sequence length M _ZC 2 or 3 or 4 or 6.

Illustratively, the sequence generation of the demodulation reference signal DMRS satisfies the following formula:

Illustratively, a first parameterDMRS sequence length M _ZC The correspondence between the group index u and the group index u can be shown in tables 4 to 7. Tables 4 to 7 are only examples, and the first parameter is as followsDMRS sequence length M _ZC The present invention is not limited by the size of the table, the corresponding relation between the group indexes u, and the size of the numerical value in each table.

Table 4M _ZC When the number of the codes is =2,and u correspondence

Table 5M _ZC When the number of the samples is =3,correspondence with u (candidate value 1)

Table 6M _ZC When the number of the samples is =3,correspondence with u (candidate value 2)

TABLE 7M _ZC When the number of the samples is =4,and u correspondence

It should be noted that, as an optional step, in S604, when the resource type is the second type, the terminal device determines a target resource, where the target resource is a resource that is continuous on the first frequency domain resource.

In this case, the terminal device may determine the target resource according to second information and third information, where the second information is first frequency domain resource indication information, and the third information includes at least one of location information of a first subcarrier in the target resource, the number of subcarriers included in the target resource, and a frequency domain interval. Descriptions about the second information and the third information are described in S602 and S603, and are not repeated here. In addition, for the scenario where the resource type is the second type, after determining the target resource, the terminal device may execute according to S605 and S606, and the specific implementation is the same as above, which is not repeated herein.

By adopting the method, the terminal equipment acquires the type of the resource mapping on the first frequency domain resource, the terminal equipment determines the target resource from the first frequency domain resource, and maps the data to the target resource according to the type of the resource mapping, so that the same data is received or transmitted by using the target resource; therefore, the frequency domain resource mapping is more flexible by distinguishing the frequency domain resource mapping types, so that the frequency domain resource positions of the discontinuous DMRS are better matched, and better channel estimation performance is obtained. In addition, in the scheme, the silent subcarriers are introduced to determine the first frequency domain resource, so that the inter-subcarrier interference between adjacent PRBs caused by Doppler frequency offset can be effectively reduced, and the system performance is improved.

Fig. 7 is a flow chart corresponding to a resource mapping method provided in the embodiment of the present application, where, as shown in fig. 7, the method includes:

s701, the terminal device acquires a subcarrier offset value.

For example, the number of subcarrier offset values may be 1 or more, and the present application is not limited to a specific number.

For example, there may be various manners in which the terminal device acquires the subcarrier offset value.

Implementation a1: the terminal device acquires from itself. For example, the terminal is obtained by presetting a subscriber identity module (subscriber identity module, SIM) card or presetting a subcarrier offset value; in this way, communication resources or signaling costs between the terminal device and the network device can be saved.

Implementation a2: the terminal equipment acquires from the network equipment, namely, the terminal equipment receives the subcarrier offset value sent by the network equipment, and the subcarrier offset value acquiring mode can be more flexible by adopting the mode.

In this implementation, the subcarrier offset value may be carried in a variety of possible messages, such as a radio resource control (Radio Resource Control, RRC) message, or downlink control information (Downlink Control Information, DCI) or a medium access control (media access control, MAC) Control Element (CE) or other possible messages, which are not specifically limited.

S702, the network equipment sends second information to the terminal equipment, wherein the second information comprises first frequency domain resource indication information.

For example, S702 may refer to S602, and will not be described herein.

S703, determining a time domain resource corresponding to the first frequency domain resource, wherein the time domain resource comprises M time slots.

S704, when M is more than or equal to 2, determining a target resource corresponding to the first time slot in the M time slots.

For example, the determining the target resource corresponding to the first slot of the M slots in S704 may refer to the related methods and descriptions in S601-604, which are not described herein.

S705, determining the target resource corresponding to each time slot of the M time slots according to the target resource corresponding to the first time slot of the M time slots and the subcarrier offset value.

For example, the manner in which the terminal device determines the target resource corresponding to each of the M timeslots may be varied, and the following description will be given in terms of implementation b1 and implementation b2, respectively.

Implementation b1

And the terminal equipment offsets the whole target resource corresponding to the first time slot of the M time slots according to a preset rule according to the subcarrier offset value, so as to determine the target resource corresponding to each time slot of the M time slots. In implementation b1, further specific descriptions are provided in connection with examples c1, c2, c 3:

In example c1, the first subcarrier location information RE in the target resource corresponding to each of the M time slots _start (i) The formula is satisfied:

wherein RE _start Representing the position information of the first subcarrier in the target resource corresponding to the first time slot in the M time slots, RE _offset Representing the subcarrier offset value, mod represents a modulo operation,representing a downward rounding, i representing a slot index in 1 radio frame or representing a slot index in M slots;

for example, the number of subcarriers included in the target resource corresponding to each of the M timeslots is the number of subcarriers included in the target resource corresponding to the first timeslot of the M timeslots;

for example, the interval between two adjacent subcarriers in the target resource corresponding to each of the M time slots is the interval between two adjacent subcarriers in the target resource corresponding to the first time slot of the M time slots.

For example, as shown in fig. 8, if the same data (or transport block TB) is transmitted through 4 slots, i.e., m=4, when the subcarrier offset value is 1, according to the above method, the n-th slot and the n+2 slot have the same frequency domain position, and the n+1 slot and the n+3 slot have one subcarrier offset with respect to the n-th slot.

In example c2, the first subcarrier location information RE in the target resource corresponding to each of the M time slots _start (i) The formula is satisfied:

For example, as shown in fig. 9, if the same data (or transport block TB) is transmitted through 4 slots, that is, m=4, when the subcarrier offset value is 1, according to the above method, the n-th slot and the n+1-th slot have the same frequency domain position, and the n+2-th slot and the n+3-th slot have one subcarrier offset with respect to the n-th slot.

In example c3, when the subcarrier offset value is plural and the order of use of the plurality of subcarrier offset values is preset or indicated by the network device, the terminal device determines the first subcarrier position in the target resource corresponding to each of the M slots according to the subcarrier offset value and the order of use of the plurality of subcarrier offset values accordingly.

For example, as shown in fig. 10, if the same data (or referred to as a transport block TB) is transmitted in 4 slots, that is, m=4, the subcarrier offset values are 0, 2, 3, and 1, and the n slot, the n+1th slot, the n+2th slot, and the n+3th slot are sequentially applied in this order, it can be seen that the n+1th slot is offset by 2 subcarriers with respect to the n slot, the n+2th slot is offset by 3 subcarriers with respect to the n slot, and the n+4th slot is offset by 1 subcarrier with respect to the n slot.

It should be noted that, as described above, the target resource position, the M value, the subcarrier offset value, and the order of use of the subcarrier offset values corresponding to the specific first time slot are merely examples, which may not be limiting in this application.

Implementation b2

The terminal equipment offsets the whole target resource corresponding to the first time slot of the M time slots according to a preset rule according to a subcarrier offset value and a period value, and further determines the target resource corresponding to each time slot of the M time slots, wherein the period value is used for indicating a period applicable to the preset rule, and the period value is represented by T; alternatively, the period value T may be a positive integer of 2 or more, or the period value may be 2 or more and RE or less _total The specific value of the positive integer of (a) is not limited in the present invention.

The period value may be obtained by referring to the description of the subcarrier offset value in S701, that is, the terminal device may be obtained from itself or from the network device, which is not described herein.

In one example, the first subcarrier location information RE in the target resource corresponding to each of the M time slots _start (i) The formula is satisfied:

or alternatively

Or alternatively

Wherein RE _start Representing the first of the M time slots Position information of first sub-carrier in target resource corresponding to time slot, RE _offset Representing the subcarrier offset value, mod represents a modulo operation,representing a downward rounding, i represents a slot index in 1 radio frame or represents a slot index in M slots, RE _total Representing the number of subcarriers included in the first frequency domain resource, wherein T is a positive integer greater than or equal to 2;

the number of subcarriers included in the target resource corresponding to each of the M timeslots is the number of subcarriers included in the target resource corresponding to the first timeslot of the M timeslots;

illustratively, the interval between two adjacent subcarriers in the target resource corresponding to each of the M timeslots is the interval between two adjacent subcarriers in the target resource corresponding to the first timeslot of the M timeslots.

It will be appreciated that for RE _total When the number of subcarriers included in the first frequency domain resource is 12, RE _total Equal to 12, when the silence subcarrier spacing information is considered, the number of subcarriers included in the first frequency domain resource is less than 12, RE _total The value may be equal to (12-the number of subcarriers included in the silence subcarrier spacing information), for example, RE when the number of subcarriers included in the silence subcarrier spacing information is 4 _total The value is (12-4), namely RE _total A value of 8, corresponding to RE in the above formula _total Equal to 8.

S706, determining the bit number included in the data carried by the target resource.

S707, data is transmitted or received according to the target resource.

For example, S706 to S707 may refer to S605 to S606, and are not described here.

By adopting the method, the terminal equipment acquires the subcarrier offset value, and further when the terminal equipment determines that the same data is transmitted or received through a plurality of time slots, the terminal equipment can determine the target resource on each time slot of the plurality of time slots according to the target resource on the first time slot of the plurality of time slots and the subcarrier offset value, map the data to the target resource according to the type of resource mapping, and then transmit or receive the same data through the plurality of time slots on the determined target resource; therefore, on one hand, the frequency domain resource mapping type is distinguished, so that the frequency domain resource mapping is more flexible, better channel estimation performance is obtained, and on the other hand, the subcarrier offset value is introduced, so that the interference randomization performance is enhanced, and the probability of strong interference of continuity between adjacent cells is reduced.

It will be appreciated that the various embodiments described above may be combined with one another.

For the above method flow, the present application further provides a communication device, which is configured to execute the above method flow.

Fig. 11 shows a possible exemplary block diagram of the apparatus involved in the embodiments of the present application. As shown in fig. 11, the apparatus 1100 may include: a processing unit 1102 and a communication unit 1103. The processing unit 1102 is configured to control and manage the operations of the apparatus 1100. The communication unit 1103 is used to support communication of the apparatus 1100 with other devices. Alternatively, the communication unit 1103, also referred to as a transceiver unit, may include a receiving unit and/or a transmitting unit, for performing receiving and transmitting operations, respectively. Optionally, the apparatus 1100 may further comprise a storage unit 1101 for storing program code and/or data of the apparatus 1100. The hardware elements of the communication unit or the transceiver unit may be a receiver or a transceiver, and the hardware elements of the processing unit may be a processor.

The apparatus 1100 may be a terminal device in the above embodiment, or may also be a chip disposed in a terminal device, and the apparatus 1100 may execute a procedure corresponding to the terminal device in the above method embodiment. The processing unit 1102 may support the apparatus 1100 to perform the actions of the terminal device in the examples of the methods above. Alternatively, the processing unit 1102 mainly performs internal actions of the terminal device in the method example, and the communication unit 1103 may support communication between the apparatus 1100 and other devices.

Specifically, in one embodiment, the processing unit 1102 is configured to: the method comprises the steps of acquiring first information, wherein the first information is used for indicating a resource mapping type on first frequency domain resources, and the first frequency domain resources are contained in one physical resource block PRB;

the processing unit is further configured to determine a target resource when the resource mapping type is a first type, where the target resource is a discontinuous resource on a first frequency domain resource;

and the receiving and transmitting unit is used for sending or receiving data according to the target resource.

In one possible design, the processing unit is specifically configured to determine the target resource according to the second information and the third information;

wherein the second information includes first frequency domain resource indication information; the third information comprises at least one of position information of a first subcarrier in the target resource, the number of subcarriers included in the target resource and a frequency domain interval, and the frequency domain interval represents an interval between two adjacent subcarriers.

In one possible design, the processing unit is also adapted to,

determining a first parameter according to the scaling factor;

and determining the number of bits contained in the data according to the first parameter.

In one possible design, the scaling factors include a frequency domain scaling factor β and/or a time domain scaling factor S; the first parameter N _info Satisfying one of the following formulas:

N _info ＝β×N _RE ×R×Q _m x v, or

N _info ＝S×N _RE ×R×Q _m X v, or

N _info ＝β×S×N _RE ×R×Q _m ×ν

Wherein R is code rate, Q _m For modulation scheme, v is the number of layers or stream numbers of transmission, N _RE For one time slot to be used in the saidNumber of resource units for data transmission.

In one possible design, the processing unit is also adapted to,

and when M is more than or equal to 2, determining the target resource corresponding to each time slot of M time slots.

In one possible design, the processing unit is specifically configured to:

determining the target resource corresponding to each time slot of the M time slots according to the target resource corresponding to the first time slot of the M time slots and the subcarrier offset value; or alternatively

And determining the target resource corresponding to each time slot of the M time slots according to the position information of the first subcarrier in the target resource corresponding to the first time slot of the M time slots, the number of subcarriers included in the target resource corresponding to the first time slot of the M time slots, the interval between two adjacent subcarriers in the target resource corresponding to the first time slot of the M time slots and a subcarrier offset value.

or alternatively

the number of subcarriers included in the target resource corresponding to each of the M time slots is the number of subcarriers included in the target resource corresponding to the first time slot of the M time slots;

the interval between two adjacent subcarriers in the target resource corresponding to each time slot of the M time slots is the interval between two adjacent subcarriers in the target resource corresponding to the first time slot of the M time slots.

wherein the first parameterIs based on the DMRS sequence length M _ZC Determined by group index u

In one possible design, the processing unit is specifically configured to obtain the first information from itself; or alternatively

The transceiver unit is specifically configured to receive the first information from the network device.

In one possible design, the processing unit is specifically configured to determine, when the resource mapping type is the second type, a target resource on the first frequency domain resource, where the target resource is a continuous resource on the first frequency domain resource.

In one possible design, the second information is carried in radio resource control signaling or medium access control signaling or downlink control signaling;

the third information is carried in a radio resource control signaling or a media access control signaling or a downlink control signaling.

The apparatus 1100 may be a network device in the above embodiment, or may also be a chip provided in the network device. The apparatus 1100 is configured to execute a procedure corresponding to the network device in the above method embodiment. The processing unit 1102 may support the apparatus 1100 to perform the actions of the network device in the examples of methods above. Alternatively, the processing unit 1102 mainly performs internal actions of the network device in the method example, and the communication unit 1103 may support communication between the apparatus 1100 and other devices.

Specifically, in one embodiment, the processing unit 1102 is configured to: transmitting first information, wherein the first information is used for indicating a resource mapping type on a first frequency domain resource, and the first frequency domain resource is contained in one Physical Resource Block (PRB);

and the receiving and transmitting unit is used for receiving or transmitting data according to the target resource.

In one possible design, the processing unit is also adapted to,

determining a first parameter according to the scaling factor;

N _info ＝β×N _RE ×R×Q _m x v, or

N _info ＝S×N _RE ×R×Q _m X v, or

N _info ＝β×S×N _RE ×R×Q _m ×ν

Wherein R is code rate, Q _m For modulation scheme, v is the number of layers or stream numbers of transmission, N _RE Is the number of resource units used for the data transmission in one time slot.

In one possible design, the processing unit is also adapted to,

In one possible design, the processing unit is specifically adapted to,

Specific implementation details in the apparatus embodiments may refer to the corresponding descriptions of the above-described mode embodiments.

Since the apparatus provided in the embodiments of the present application may be used to perform the above-mentioned communication method, the technical effects that can be obtained by the apparatus may refer to the above-mentioned method embodiments, and are not described herein again.

It should be understood that the division of the units in the above apparatus is merely a division of a logic function, and may be fully or partially integrated into a physical entity or may be physically separated when actually implemented. And the units in the device can be all realized in the form of software calls through the processing element; or can be realized in hardware; it is also possible that part of the units are implemented in the form of software, which is called by the processing element, and part of the units are implemented in the form of hardware. For example, each unit may be a processing element that is set up separately, may be implemented as integrated in a certain chip of the apparatus, or may be stored in a memory in the form of a program, and the functions of the unit may be called and executed by a certain processing element of the apparatus. Furthermore, all or part of these units may be integrated together or may be implemented independently. The processing element described herein may in turn be a processor, which may be an integrated circuit with signal processing capabilities. In implementation, the operations of the above methods or the above units may be implemented by integrated logic circuits of hardware in a processor element or in the form of software calls through a processing element.

In one example, the unit in any of the above apparatuses may be one or more integrated circuits configured to implement the above methods, for example: one or more specific integrated circuits (application specific integrated circuit, ASIC), or one or more microprocessors (digital singnal processor, DSP), or one or more field programmable gate arrays (field programmable gate array, FPGA), or a combination of at least two of these integrated circuit forms. For another example, when the units in the apparatus may be implemented in the form of a scheduler of processing elements, the processing elements may be processors, such as general purpose central processing units (central processing unit, CPU), or other processors that may invoke programs. For another example, the units may be integrated together and implemented in the form of a system-on-a-chip (SOC).

The above receiving unit is an interface circuit of the apparatus for receiving signals from other apparatuses. For example, when the device is implemented in the form of a chip, the receiving unit is an interface circuit of the chip for receiving signals from other chips or devices. The above transmitting unit is an interface circuit of the apparatus for transmitting signals to other apparatuses. For example, when the device is implemented in the form of a chip, the transmitting unit is an interface circuit of the chip for transmitting signals to other chips or devices.

Please refer to fig. 12, which is a schematic structural diagram of a terminal device according to an embodiment of the present application. Which may be the terminal device in the above embodiment, for implementing the operation of the terminal device in the above embodiment. As shown in fig. 3, the terminal device includes: an antenna 1210, a radio frequency portion 1220, a signal processing portion 1230. The antenna 1210 is connected to the radio frequency portion 1220. In the downlink direction, the radio frequency part 1220 receives information transmitted from the network device through the antenna 1210, and transmits the information transmitted from the network device to the signal processing part 1230 for processing. In the uplink direction, the signal processing portion 1230 processes information of the terminal device and transmits the processed information to the radio frequency portion 1220, and the radio frequency portion 1220 processes information of the terminal device and transmits the processed information to the network device through the antenna 1210.

The signal processing portion 1230 may include a modem subsystem for implementing processing of the various communication protocol layers of data; the system also comprises a central processing subsystem for realizing the processing of the terminal equipment operating system and the application layer; in addition, other subsystems, such as a multimedia subsystem for implementing control of a terminal device camera, screen display, etc., a peripheral subsystem for implementing connection with other devices, etc., may be included. The modem subsystem may be a separately provided chip. Alternatively, the above means for a terminal device may be located in the modem subsystem.

The modem subsystem may include one or more processing elements 1231, including, for example, a master CPU and other integrated circuits. In addition, the modulation and demodulation subsystem may also include a storage element 1232 and an interface circuit 1233. The storage element 1232 is used to store data and programs, but the programs used to perform the methods performed by the terminal device in the above methods may not be stored in the storage element 1232, but in a memory other than the modulation and demodulation subsystem, which is loaded for use when in use. Interface circuit 1233 is used to communicate with other subsystems. The above means for a terminal device may be located in a modem subsystem which may be implemented by a chip comprising at least one processing element for performing the steps of any of the methods performed by the above terminal device and interface circuitry for communicating with other means. In one implementation, the unit of the terminal device implementing each step in the above method may be implemented in the form of a processing element scheduler, for example, the apparatus for a terminal device includes a processing element and a storage element, and the processing element invokes the program stored in the storage element to perform the method performed by the terminal device in the above method embodiment. The memory element may be a memory element where the processing element is on the same chip, i.e. an on-chip memory element.

In another implementation, the program for executing the method executed by the terminal device in the above method may be a storage element on a different chip than the processing element, i.e. an off-chip storage element. At this time, the processing element calls or loads a program from the off-chip storage element on the on-chip storage element to call and execute the method executed by the terminal device in the above method embodiment.

In yet another implementation, the unit of the terminal device implementing the steps of the above method may be configured as one or more processing elements, which are disposed on the modem subsystem, where the processing elements may be integrated circuits, for example: one or more ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits may be integrated together to form a chip.

The units of the terminal device implementing the steps of the above method may be integrated together and implemented in the form of a system-on-a-chip (SOC) chip for implementing the above method. At least one processing element and a storage element can be integrated in the chip, and the processing element invokes the stored program of the storage element to implement the method executed by the terminal device; alternatively, at least one integrated circuit may be integrated in the chip for implementing the method performed by the above terminal device; alternatively, the functions of the partial units may be implemented in the form of a processing element calling program, and the functions of the partial units may be implemented in the form of an integrated circuit, in combination with the above implementations.

It will be seen that the above apparatus for a terminal device may comprise at least one processing element and interface circuitry, wherein the at least one processing element is adapted to perform any of the methods performed by the terminal device provided by the above method embodiments. The processing element may be configured in a first manner: that is, a part or all of the steps executed by the terminal device are executed in a manner of calling the program stored in the storage element; the second way is also possible: i.e. by means of integrated logic circuitry of hardware in the processor element in combination with instructions to perform part or all of the steps performed by the terminal device; of course, it is also possible to perform part or all of the steps performed by the terminal device in combination with the first and second modes.

The processing element herein, as described above, may be a general purpose processor, such as a CPU, or one or more integrated circuits configured to implement the above methods, such as: one or more ASICs, or one or more microprocessor DSPs, or one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms.

The memory element may be one memory or may be a collective term for a plurality of memory elements.

Fig. 13 is a schematic structural diagram of a network device according to an embodiment of the present application. For implementing the operations of the network device (such as the second network device) in the above embodiments. As shown in fig. 13, the network device includes: an antenna 1301, a radio frequency device 1302, a baseband device 1303. The antenna 1301 is connected to a radio frequency device 1302. In the uplink direction, the radio frequency device 1302 receives information transmitted by the terminal device through the antenna 1301, and transmits the information transmitted by the terminal device to the baseband device 1303 for processing. In the downlink direction, the baseband device 1303 processes information of the terminal device, and sends the processed information to the radio frequency device 1302, where the processed information of the terminal device is sent to the terminal device through the antenna 1301 by the radio frequency device 1302.

The baseband apparatus 1303 may include one or more processing elements 13031, including, for example, a master CPU and other integrated circuits. In addition, the baseband device 1303 may further include a storage element 13032 and an interface 13033, where the storage element 13032 is configured to store programs and data; the interface 13033 is used to interact information with the radio frequency device 1302, such as a common public radio interface (common public radio interface, CPRI). The above means for network device may be located in the baseband means 1303, e.g. the above means for network device may be a chip on the baseband means 1303 comprising at least one processing element for performing the steps of any of the methods performed by the above network device and interface circuitry for communicating with other means. In one implementation, the units of the network device implementing the steps in the above method may be implemented in the form of a processing element scheduler, for example, an apparatus for a network device includes a processing element and a storage element, where the processing element invokes the program stored in the storage element to perform the method performed by the network device in the above method embodiment. The memory elements may be memory elements on the same chip as the processing elements, i.e., on-chip memory elements, or may be memory elements on a different chip than the processing elements, i.e., off-chip memory elements.

In another implementation, the units of the network device implementing the steps of the above method may be configured as one or more processing elements, which are disposed on the baseband apparatus, where the processing elements may be integrated circuits, for example: one or more ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits may be integrated together to form a chip.

The units of the network device implementing the steps of the above method may be integrated together and implemented in the form of a system-on-a-chip (SOC), e.g. the baseband device comprises the SOC chip for implementing the above method. At least one processing element and a storage element can be integrated in the chip, and the processing element invokes the stored program of the storage element to implement the method executed by the above network device; alternatively, at least one integrated circuit may be integrated within the chip for implementing the method performed by the above network device; alternatively, the functions of the partial units may be implemented in the form of a processing element calling program, and the functions of the partial units may be implemented in the form of an integrated circuit, in combination with the above implementations.

It will be seen that the above apparatus for a network device may comprise at least one processing element and interface circuitry, wherein the at least one processing element is adapted to perform any of the methods performed by the network device provided by the above method embodiments. The processing element may be configured in a first manner: that is, a part or all of the steps executed by the network device are executed in a manner of calling the program stored in the storage element; the second way is also possible: i.e. by means of integrated logic circuitry of hardware in the processor element in combination with instructions to perform part or all of the steps performed by the network device; of course, some or all of the steps performed by the above network device may also be performed in combination with the first and second modes.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present invention, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), etc.

Claims

A communication method, the method being suitable for a terminal device, comprising:

acquiring first information, wherein the first information is used for indicating a resource mapping type on a first frequency domain resource, and the first frequency domain resource is contained in one Physical Resource Block (PRB);

when the resource mapping type is a first type, determining a target resource, wherein the target resource is discontinuous resource on a first frequency domain resource;

and sending or receiving data according to the target resource.
The method of claim 1, wherein the determining the target resource comprises:

determining the target resource according to the second information and the third information;

wherein the second information includes first frequency domain resource indication information; the third information comprises at least one of position information of a first subcarrier in the target resource, the number of subcarriers included in the target resource and a frequency domain interval, and the frequency domain interval represents an interval between two adjacent subcarriers.
The method according to claim 1 or 2, characterized in that the method further comprises:

determining a first parameter according to the scaling factor;

and determining the number of bits contained in the data according to the first parameter.
A method according to claim 3, wherein the scaling factor comprises a frequency domain scaling factor βAnd/or a time domain scaling factor S; the first parameter N _info Satisfying one of the following formulas:

N _info ＝β×N _RE ×R×Q _m x v, or

N _info ＝S×N _RE ×R×Q _m X v, or

N _info ＝β×S×N _RE ×R×Q _m ×ν

Wherein R is code rate, Q _m For modulation scheme, v is the number of layers or stream numbers of transmission, N _RE Is the number of resource units used for the data transmission in one time slot.
The method according to any one of claims 1-4, further comprising:

determining a time domain resource corresponding to the first frequency domain resource, wherein the time domain resource comprises M time slots, and M is a positive integer;

and when M is more than or equal to 2, determining the target resource corresponding to each time slot of M time slots.
The method of claim 5, wherein the determining the target resource for each of the M time slots comprises:

determining the target resource corresponding to each time slot of the M time slots according to the target resource corresponding to the first time slot of the M time slots and the subcarrier offset value; or alternatively

And determining the target resource corresponding to each time slot of the M time slots according to the position information of the first subcarrier in the target resource corresponding to the first time slot of the M time slots, the number of subcarriers included in the target resource corresponding to the first time slot of the M time slots, the interval between two adjacent subcarriers in the target resource corresponding to the first time slot of the M time slots and a subcarrier offset value.
The method according to claim 6, comprising:

first subcarrier position information RE in the target resource corresponding to each of the M time slots _start (i) The formula is satisfied:

or alternatively

Wherein RE _start Representing the position information of the first subcarrier in the target resource corresponding to the first time slot in the M time slots, RE _offset Representing the subcarrier offset value, mod represents a modulo operation,representing a downward rounding, i representing a slot index in 1 radio frame or representing a slot index in M slots;

the number of subcarriers included in the target resource corresponding to each of the M time slots is the number of subcarriers included in the target resource corresponding to the first time slot of the M time slots;

the interval between two adjacent subcarriers in the target resource corresponding to each time slot of the M time slots is the interval between two adjacent subcarriers in the target resource corresponding to the first time slot of the M time slots.
The method according to any of claims 1-7, wherein the data bearer is on a physical downlink shared channel, PDSCH, or a physical uplink shared channel, PUSCH.
According to claimThe method of any one of claims 1-8, wherein the data corresponds to a sequence length M of a demodulation reference signal DMRS _ZC 2 or 3 or 4 or 6.
The method of claim 9, wherein the sequence generation of the demodulation reference signal DMRS satisfies the formula:

wherein the first parameterIs based on the DMRS sequence length M _ZC And a group index u.
The method according to any one of claims 1-10, wherein the acquiring the first information comprises:

the first information is obtained from itself or received from the network device.
The method according to any one of claims 1-11, further comprising:

and when the resource mapping type is the second type, determining a target resource on the first frequency domain resource, wherein the target resource is a continuous resource on the first frequency domain resource.
The method according to any one of claims 1-12, comprising:

the second information is carried in a radio resource control signaling or a media access control signaling or a downlink control signaling;

the third information is carried in a radio resource control signaling or a media access control signaling or a downlink control signaling.
A method of communication, the method being adapted for use with a network device, comprising:

transmitting first information, wherein the first information is used for indicating a resource mapping type on a first frequency domain resource, and the first frequency domain resource is contained in one Physical Resource Block (PRB);

When the resource mapping type is a first type, determining a target resource, wherein the target resource is discontinuous resource on a first frequency domain resource;

and receiving or transmitting data according to the target resource.
The method of claim 14, wherein the determining the target resource comprises:

determining the target resource according to the second information and the third information;

wherein the second information includes first frequency domain resource indication information; the third information comprises at least one of position information of a first subcarrier in the target resource, the number of subcarriers included in the target resource and a frequency domain interval, and the frequency domain interval represents an interval between two adjacent subcarriers.
The method according to claim 14 or 15, characterized in that the method further comprises:

determining a first parameter according to the scaling factor;

and determining the number of bits contained in the data according to the first parameter.
The method according to claim 16, wherein the scaling factor comprises a frequency domain scaling factor β and/or a time domain scaling factor S; the first parameter N _info Satisfying one of the following formulas:

N _info ＝β×N _RE ×R×Q _m x v, or

N _info ＝S×N _RE ×R×Q _m X v, or

N _info ＝β×S×N _RE ×R×Q _m ×ν

Wherein R is code rate, Q _m For modulation scheme, v is the number of layers or stream numbers of transmission, N _RE Is the number of resource units used for the data transmission in one time slot.
The method according to any one of claims 14-17, further comprising:

determining a time domain resource corresponding to the first frequency domain resource, wherein the time domain resource comprises M time slots, and M is a positive integer;

and when M is more than or equal to 2, determining the target resource corresponding to each time slot of M time slots.
The method of claim 18, wherein the determining the target resource for each of the M time slots comprises:

determining the target resource corresponding to each time slot of the M time slots according to the target resource corresponding to the first time slot of the M time slots and the subcarrier offset value; or alternatively

And determining the target resource corresponding to each time slot of the M time slots according to the position information of the first subcarrier in the target resource corresponding to the first time slot of the M time slots, the number of subcarriers included in the target resource corresponding to the first time slot of the M time slots, the interval between two adjacent subcarriers in the target resource corresponding to the first time slot of the M time slots and a subcarrier offset value.
The method according to claim 19, comprising:

first subcarrier position information RE in the target resource corresponding to each of the M time slots _start (i) The formula is satisfied:

or alternatively

Wherein RE _start Representing the position information of the first subcarrier in the target resource corresponding to the first time slot in the M time slots, RE _offset Representing the subcarrier offset value, mod represents a modulo operation,representing a downward rounding, i representing a slot index in 1 radio frame or representing a slot index in M slots;

the number of subcarriers included in the target resource corresponding to each of the M time slots is the number of subcarriers included in the target resource corresponding to the first time slot of the M time slots;

the interval between two adjacent subcarriers in the target resource corresponding to each time slot of the M time slots is the interval between two adjacent subcarriers in the target resource corresponding to the first time slot of the M time slots.
The method according to any of claims 14-20, wherein the data bearer is on a physical downlink shared channel, PDSCH, or a physical uplink shared channel, PUSCH.
The method according to any of claims 14-21, characterized in that the data corresponds to a sequence length M of a demodulation reference signal DMRS _ZC 2 or 3 or 4 or 6.
The method of claim 22 wherein the sequence generation of the demodulation reference signal DMRS satisfies the formula:

wherein the first parameterIs based on the DMRS sequence length M _ZC And a group index u.
The method according to any one of claims 14-23, further comprising:

and when the resource mapping type is the second type, determining a target resource on the first frequency domain resource, wherein the target resource is a continuous resource on the first frequency domain resource.
The method according to any one of claims 14-24, comprising:

the second information is carried in a radio resource control signaling or a media access control signaling or a downlink control signaling;

the third information is carried in a radio resource control signaling or a media access control signaling or a downlink control signaling.
A communication device, comprising:

a processing unit, configured to obtain first information, where the first information is used to indicate a resource mapping type on a first frequency domain resource, and the first frequency domain resource is included in one physical resource block PRB;

the processing unit is further configured to determine a target resource when the resource mapping type is a first type, where the target resource is a discontinuous resource on a first frequency domain resource;

And the receiving and transmitting unit is used for sending or receiving data according to the target resource.
The apparatus as claimed in claim 26, comprising:

the processing unit is specifically configured to determine the target resource according to the second information and the third information;

wherein the second information includes first frequency domain resource indication information; the third information comprises at least one of position information of a first subcarrier in the target resource, the number of subcarriers included in the target resource and a frequency domain interval, and the frequency domain interval represents an interval between two adjacent subcarriers.
The apparatus of claim 26 or 27, wherein the processing unit is further configured to,

determining a first parameter according to the scaling factor;

and determining the number of bits contained in the data according to the first parameter.
The apparatus according to claim 28, wherein the scaling factor comprises a frequency domain scaling factor β and/or a time domain scaling factor S; the first parameter N _info Satisfying one of the following formulas:

N _info ＝β×N _RE ×R×Q _m x v, or

N _info ＝S×N _RE ×R×Q _m X v, or

N _info ＝β×S×N _RE ×R×Q _m ×ν

Wherein R is code rate, Q _m For modulation scheme, v is the number of layers or stream numbers of transmission, N _RE Is the number of resource units used for the data transmission in one time slot.
The apparatus of any one of claims 26-29, wherein the processing unit is further configured to,

determining a time domain resource corresponding to the first frequency domain resource, wherein the time domain resource comprises M time slots, and M is a positive integer;

and when M is more than or equal to 2, determining the target resource corresponding to each time slot of M time slots.
The apparatus according to claim 30, wherein the processing unit is specifically configured to:

determining the target resource corresponding to each time slot of the M time slots according to the target resource corresponding to the first time slot of the M time slots and the subcarrier offset value; or alternatively

And determining the target resource corresponding to each time slot of the M time slots according to the position information of the first subcarrier in the target resource corresponding to the first time slot of the M time slots, the number of subcarriers included in the target resource corresponding to the first time slot of the M time slots, the interval between two adjacent subcarriers in the target resource corresponding to the first time slot of the M time slots and a subcarrier offset value.
The apparatus as claimed in claim 31, comprising:

first subcarrier position information RE in the target resource corresponding to each of the M time slots _start (i) The formula is satisfied:

or alternatively

Wherein RE _start Representing the position information of the first subcarrier in the target resource corresponding to the first time slot in the M time slots, RE _offset Representing the subcarrier offset value, mod represents the solutionThe modulus of the data is calculated,representing a downward rounding, i representing a slot index in 1 radio frame or representing a slot index in M slots;

the number of subcarriers included in the target resource corresponding to each of the M time slots is the number of subcarriers included in the target resource corresponding to the first time slot of the M time slots;

the interval between two adjacent subcarriers in the target resource corresponding to each time slot of the M time slots is the interval between two adjacent subcarriers in the target resource corresponding to the first time slot of the M time slots.
The apparatus according to any of claims 26-32, wherein the data bearer is on a physical downlink shared channel, PDSCH, or a physical uplink shared channel, PUSCH.
The apparatus of any one of claims 26-33, wherein the data corresponds to a sequence length M of a demodulation reference signal, DMRS _ZC 2 or 3 or 4 or 6.
The apparatus of claim 34, wherein the sequence generation of the demodulation reference signal DMRS satisfies the formula:

Wherein the first parameterIs based on the DMRS sequence length M _ZC And a group index u.
The apparatus according to any one of claims 26-35, comprising:

the processing unit is specifically configured to acquire the first information from the processing unit; or alternatively

The transceiver unit is specifically configured to receive the first information from the network device.
The apparatus according to any of claims 26-36, wherein the processing unit is configured to determine a target resource on the first frequency domain resource when the resource mapping type is the second type, the target resource being a continuous resource on the first frequency domain resource.
The apparatus according to any one of claims 26-37, comprising:

the second information is carried in a radio resource control signaling or a media access control signaling or a downlink control signaling;

the third information is carried in a radio resource control signaling or a media access control signaling or a downlink control signaling.
A communication device, comprising:

a processing unit, configured to send first information, where the first information is used to indicate a resource mapping type on a first frequency domain resource, and the first frequency domain resource is included in one physical resource block PRB;

The processing unit is further configured to determine a target resource when the resource mapping type is a first type, where the target resource is a discontinuous resource on a first frequency domain resource;

and the receiving and transmitting unit is used for receiving or transmitting data according to the target resource.
The apparatus according to claim 39, comprising:

the processing unit is specifically configured to determine the target resource according to the second information and the third information;

wherein the second information includes first frequency domain resource indication information; the third information comprises at least one of position information of a first subcarrier in the target resource, the number of subcarriers included in the target resource and a frequency domain interval, and the frequency domain interval represents an interval between two adjacent subcarriers.
The apparatus of claim 39 or 40, wherein the processing unit is further configured to,

determining a first parameter according to the scaling factor;

and determining the number of bits contained in the data according to the first parameter.
The apparatus of claim 41, wherein the scaling factors comprise a frequency domain scaling factor β and/or a time domain scaling factor S; the first parameter N _info Satisfying one of the following formulas:

N _info ＝β×N _RE ×R×Q _m x v, or

N _info ＝S×N _RE ×R×Q _m X v, or

N _info ＝β×S×N _RE ×R×Q _m ×ν

Wherein R is code rate, Q _m For modulation scheme, v is the number of layers or stream numbers of transmission, N _RE Is the number of resource units used for the data transmission in one time slot.
The apparatus of any one of claims 39-42, wherein the processing unit is further configured to,

determining a time domain resource corresponding to the first frequency domain resource, wherein the time domain resource comprises M time slots, and M is a positive integer;

and when M is more than or equal to 2, determining the target resource corresponding to each time slot of M time slots.
The apparatus according to claim 43, wherein said processing unit is configured to,

determining the target resource corresponding to each time slot of the M time slots according to the target resource corresponding to the first time slot of the M time slots and the subcarrier offset value; or alternatively

And determining the target resource corresponding to each time slot of the M time slots according to the position information of the first subcarrier in the target resource corresponding to the first time slot of the M time slots, the number of subcarriers included in the target resource corresponding to the first time slot of the M time slots, the interval between two adjacent subcarriers in the target resource corresponding to the first time slot of the M time slots and a subcarrier offset value.
The apparatus according to claim 44, comprising:

first subcarrier position information RE in the target resource corresponding to each of the M time slots _start (i) The formula is satisfied:

or alternatively

Wherein RE _start Representing the position information of the first subcarrier in the target resource corresponding to the first time slot in the M time slots, RE _offset Representing the subcarrier offset value, mod represents a modulo operation,representing a downward rounding, i representing a slot index in 1 radio frame or representingSlot index in M slots;

the number of subcarriers included in the target resource corresponding to each of the M time slots is the number of subcarriers included in the target resource corresponding to the first time slot of the M time slots;

the interval between two adjacent subcarriers in the target resource corresponding to each time slot of the M time slots is the interval between two adjacent subcarriers in the target resource corresponding to the first time slot of the M time slots.
The apparatus of any one of claims 39-45, wherein the data bearer is on a physical downlink shared channel, PDSCH, or a physical uplink shared channel, PUSCH.
The apparatus of any one of claims 39-46, wherein the data corresponds to a sequence length M of a demodulation reference signal, DMRS _ZC 2 or 3 or 4 or 6.
The apparatus of claim 47, wherein the sequence generation of the demodulation reference signal DMRS satisfies the formula:

wherein the first parameterIs based on the DMRS sequence length M _ZC And a group index u.
The device according to any one of claims 39-48, wherein the processing unit is specifically configured to,

and when the resource mapping type is the second type, determining a target resource on the first frequency domain resource, wherein the target resource is a continuous resource on the first frequency domain resource.
The apparatus of any one of claims 39-49, comprising:

the second information is carried in a radio resource control signaling or a media access control signaling or a downlink control signaling;

the third information is carried in a radio resource control signaling or a media access control signaling or a downlink control signaling.
A communication device comprising at least one processor and interface circuitry, wherein the at least one processor is configured to communicate with other devices via the interface circuitry and to perform the method of any of claims 1 to 25.
A computer readable storage medium storing instructions that, when executed, cause the method of any one of claims 1 to 25 to be performed.
A computer program product, the computer program product comprising: computer program code which, when run by a computer, causes the computer to perform the method according to any one of claims 1 to 25.