CN109391905B - Paging method and device, readable storage medium, base station and user equipment - Google Patents

Paging method and device, readable storage medium, base station and user equipment Download PDF

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CN109391905B
CN109391905B CN201710685961.4A CN201710685961A CN109391905B CN 109391905 B CN109391905 B CN 109391905B CN 201710685961 A CN201710685961 A CN 201710685961A CN 109391905 B CN109391905 B CN 109391905B
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user equipment
paging
paged
random access
resource
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CN109391905A (en
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高兴航
顾祥新
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/005—Transmission of information for alerting of incoming communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A paging method and device, readable storage medium, base station, user equipment, the paging method includes: broadcasting resource indication information used for random access triggered by paging indication to user equipment, wherein the resource indication information indicates a special lead code and PRACH resources appointed by each wave beam; at each paging time of a paging cycle, sending paging indication information to user equipment in a leisure state or an inactive state; receiving a special lead code sent by first user equipment in a paged paging group, wherein the first user equipment sends the special lead code by using PRACH (physical random access channel) resources specified by a resident beam; and sending a paged user equipment identifier to the first user equipment by using a beam corresponding to the PRACH resource used by the first user equipment for sending the special lead code, so that the first user equipment judges whether to continuously execute random access. The technical scheme of the invention can save the downlink resource overhead in the paging process.

Description

Paging method and device, readable storage medium, base station and user equipment
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a paging method and apparatus, a readable storage medium, a base station, and a user equipment.
Background
When downlink data needs to be sent to a User Equipment (UE) in an IDLE (IDLE) state, a Mobility Management Entity (MME) sends a Paging message to all base stations (enbs) in all Tracking Areas (TA) registered by the UE, where the Paging message notifies an identifier of a called UE and a value required by the enbs to calculate a Physical Frame (PF) of the UE. The eNB may then send a Paging message containing Paging Record List (Paging Record List) information over the air to page the UE. After receiving the Paging message, the UE in IDLE (RRC _ IDLE) state reads the flag (UE-Identity) of the paged UE in the Paging record list. If the UE finds that the UE mark of the UE is consistent with a certain UE-Identity, the UE initiates an uplink access to carry out a Radio Resource Control (RRC) connection establishment process so as to receive a call, and if the UE-Identity which is consistent with the UE mark of the UE is not found, the UE discards the received Paging message and enters a dormant state.
In the prior art, in the fifth Generation mobile communication technology (5th-Generation,5G) system, paging should also be broadcast transmitted. For a multi-beam scenario, since the base station does not know the best beam on which the UE resides in IDLE and active (INACTIVE) states due to the mobility of the UE, the base station cannot transmit a paging message on the best beam of the UE, and can only transmit the same paging message on all beams in a beam sweeping manner. The UE Identity indicated in the paging Record List carried in the paging message in LTE is a Serving Temporary Mobile Subscriber Identity (S-TMSI) of the UE, and has a length of 40 bits (bits) or an International Mobile Subscriber Identity (IMSI), and a length of 64 bits. If the number of users for paging is very large and the beam configuration of the base station is many, the downlink overhead occupied by broadcasting the transmitted paging message in the beam sweeping manner is very large.
In order to reduce the downlink resource overhead, some researchers propose to send Paging through a Paging indication mechanism, perform Paging grouping on IDLE and INACTIVE state UEs in a system, and then perform Paging moment (PO) distribution on the UEs in different groups, and indicate the Paging situation of user equipment in different Paging groups through a bitmap (bitmap) mode on each PO, but do not explicitly indicate which user in the corresponding Paging group is paged, and indicate that all users in the Paging group to which the user is paged perform an uplink access process. The network sends the called user information list on the beam where the user resides, and the user determines whether to be paged.
However, in the prior art, in the process of performing uplink access according to the received paging indication information, whether the user is paged or not is confirmed by the user, the network is required to transmit the called user identifier on the beam where the user in the paging group resides, information containing the same user identifier may need to be transmitted on a plurality of beams, and more downlink resources need to be occupied. Or, users in the same paging group on the same beam use different PRACH resources to send access requests, and the network needs to send information containing the same user identifier in different random access response messages carried on the same beam, which increases the overhead of downlink resources.
Disclosure of Invention
The technical problem solved by the invention is how to save the downlink resource overhead in the paging process.
In order to solve the foregoing technical problem, an embodiment of the present invention provides a paging method, where the paging method includes: broadcasting resource indication information used for random access triggered by paging indication to user equipment, wherein the resource indication information indicates a special lead code and PRACH resources appointed by each wave beam; at each paging moment of a paging cycle, sending paging indication information to user equipment in a leisure state or an inactive state, wherein the paging indication information indicates a paging state of a user in each paging group, and the paging state is paged or not paged; receiving a dedicated preamble transmitted by a first user equipment in a paged paging group, wherein the dedicated preamble is transmitted by the first user equipment by using a PRACH resource designated by a beam in which the first user equipment resides; and sending a paged user equipment identifier to the first user equipment by using a beam corresponding to the PRACH resource used by the first user equipment for sending the special preamble, so that the first user equipment can judge whether to continuously execute random access.
Optionally, the dedicated preambles correspond to paging groups one to one, and the receiving the dedicated preamble sent by the first user equipment in the paged paging group includes: receiving a dedicated preamble transmitted by the first user equipment and corresponding to a paging group to which the first user equipment belongs.
Optionally, the sending, to the first user equipment, a paged user equipment identifier using a beam corresponding to the PRACH resource used by the first user equipment to send the dedicated preamble includes: determining a paging group to which the first user equipment belongs according to a special lead code sent by the first user equipment; and using the beam corresponding to the PRACH resource used by the first user equipment for sending the special preamble code, and sending the paged user equipment identification in the paging group to which the first user equipment belongs to the first user equipment.
Optionally, the sending, to the first user equipment, a paged user equipment identifier using a beam corresponding to the PRACH resource used by the first user equipment for sending the dedicated preamble includes: and using the beam corresponding to the PRACH resource used by the special lead code sent by the first user equipment to send the user equipment identification paged in all paging groups at the current paging moment to the first user equipment.
Optionally, the dedicated preambles correspond to beams one to one, and the receiving the dedicated preamble sent by the first user equipment in the paged paging group includes: receiving a dedicated preamble transmitted by the first user equipment corresponding to a beam on which the first user equipment is camped.
Optionally, the sending, to the first user equipment, a paged user equipment identifier using a beam corresponding to the PRACH resource used by the first user equipment for sending the dedicated preamble includes: determining RA-RNTI according to PRACH resources used by the first user equipment; scrambling a physical downlink control channel by using the RA-RNTI, and indicating a resource position of a random access response message, so that the first user equipment decodes at the resource position of the random access response message to obtain the random access response message, wherein the random access response message comprises the paged user equipment identifier.
Optionally, the sending, to the first user equipment, a paged user equipment identifier using a beam corresponding to the PRACH resource used by the first user equipment to send the dedicated preamble includes: indicating the waiting time for receiving the paging message to the first user equipment, wherein the paging message comprises a paged user equipment identifier, and the waiting time is the time difference between the moment when the first user equipment receives the paging indication information and the moment when the first user equipment receives the paging message; and sending the paging message to the first user equipment by using a beam corresponding to the PRACH resource used by the first user equipment for sending the special preamble.
Optionally, the waiting time is indicated to the first user equipment through system information.
Optionally, the indicating, to the first user equipment, the waiting time for receiving the paging message includes: and indicating the waiting time through downlink control information carrying the paging indication information.
Optionally, the first user equipment sends the dedicated preamble used for random access triggered by the paging indication using the PRACH resource corresponding to the optimal downlink beam, and receives the paging message according to the waiting time if the random access response message is successfully received.
The embodiment of the invention also discloses another paging method, which comprises the following steps: receiving resource indication information used for random access triggered by paging indication broadcast by a base station, wherein the resource indication information indicates a special lead code and PRACH resources appointed by each wave beam; if the paging time in the paging cycle is in a leisure state or an inactive state, receiving paging indication information, wherein the paging indication information indicates the paging state of users in each paging group, and the paging state is paged or not paged; if the paging group belongs to the paged paging group, transmitting the special preamble by using PRACH resources specified by the resident beam; and receiving the paged user equipment identifier sent by the base station to judge whether to continue to execute random access, wherein the base station sends the paged user equipment identifier by using a beam corresponding to the PRACH resource used for sending the special lead code.
Optionally, the receiving the paged ue identifier sent by the base station includes: and decoding the resource position of the random access response message indicated by the base station to obtain the random access response message, wherein the random access response message comprises the paged user equipment identifier.
Optionally, after receiving the paged ue identifier sent by the base station, the method further includes: comparing the user equipment identification with the paged user equipment identification to obtain a comparison result; if the comparison result shows that the user equipment identification of the user equipment is consistent with the paged user equipment identification, the random access is continued.
Optionally, the continuing the random access includes: and sending an RRC connection establishment request or an RRC connection recovery request by utilizing the uplink resource carried by the random access response message, and carrying the self user equipment identification.
The embodiment of the invention also discloses a paging device, which comprises: a resource indication information sending module, adapted to broadcast resource indication information for random access triggered by a paging indication to a user equipment, where the resource indication information indicates a dedicated preamble and PRACH resources specified by each beam; a paging indication information sending module, adapted to send paging indication information to the user equipment in a leisure state or an inactive state at each paging time of a paging cycle, where the paging indication information indicates a paging state of a user in each paging group, and the paging state is paged or not paged; a preamble receiving module, adapted to receive a dedicated preamble transmitted by a first user equipment in a paged paging group, the first user equipment transmitting the dedicated preamble using the PRACH resource specified by a beam on which the first user equipment resides; and a user equipment identifier sending module, adapted to send a paged user equipment identifier to the first user equipment by using a beam corresponding to the PRACH resource used by the first user equipment to send the dedicated preamble, so that the first user equipment determines whether to continue to perform random access.
Optionally, the dedicated preambles correspond to paging groups one to one, and the preamble receiving module includes: a first preamble receiving unit, adapted to receive a dedicated preamble transmitted by the first user equipment and corresponding to a paging group to which the first user equipment belongs.
Optionally, the ue identifier sending module includes: a paging group determining unit, adapted to determine a paging group to which the first user equipment belongs according to a dedicated preamble sent by the first user equipment; a first paged user equipment identifier sending unit, adapted to send, to the first user equipment, a paged user equipment identifier in a paging group to which the first user equipment belongs, using a beam corresponding to a PRACH resource used by the first user equipment to send the dedicated preamble.
Optionally, the ue identifier sending module includes: and the second paged user equipment identifier sending unit is suitable for sending the user equipment identifiers paged in all paging groups at the current paging moment to the first user equipment by using the beam corresponding to the PRACH resource used by the special lead code sent by the first user equipment.
Optionally, the dedicated preambles correspond to beams one to one, and the preamble receiving module includes: a second preamble receiving unit adapted to receive a dedicated preamble transmitted by the first user equipment corresponding to a beam on which the first user equipment resides.
Optionally, the ue identifier sending module includes: an RA-RNTI determining unit, adapted to determine an RA-RNTI according to PRACH resources used by the first user equipment; a random access response sending unit, adapted to scramble a physical downlink control channel with the RA-RNTI and indicate a resource location of a random access response message, so that the first user equipment decodes at the resource location of the random access response message to obtain the random access response message, where the random access response message includes the paged user equipment identity.
The embodiment of the invention also discloses a paging device, which comprises: a resource indication information receiving module, adapted to receive resource indication information used for random access triggered by a paging indication broadcast by a base station, where the resource indication information indicates a dedicated preamble and PRACH resources specified by each beam; a paging indication information receiving module, adapted to receive paging indication information when a paging time of a paging cycle is in a leisure state or an inactive state, where the paging indication information indicates a paging state of a user in each paging group, and the paging state is paged or not paged; a preamble transmission module adapted to transmit the dedicated preamble using PRACH resources specified by a camped beam when belonging to a paged paging group; and the user equipment identifier receiving module is suitable for receiving the paged user equipment identifier sent by the base station so as to judge whether to continue to execute random access, and the base station sends the paged user equipment identifier by using a beam corresponding to the PRACH resource used for sending the special lead code.
Optionally, the ue identity receiving module includes: a decoding receiving unit, adapted to decode at a resource location of a random access response message indicated by the base station to obtain the random access response message, where the random access response message includes the paged ue identity.
Optionally, the paging device further includes: the comparison module is suitable for comparing the user equipment identification with the paged user equipment identification to obtain a comparison result; and the random access module is suitable for continuing random access when the comparison result shows that the user equipment identification of the random access module is consistent with the paged user equipment identification.
Optionally, the random access module includes: and the first access unit is suitable for sending an RRC connection establishment request or an RRC connection recovery request by utilizing the uplink resource carried by the random access response message and carrying the self user equipment identifier.
The embodiment of the invention also discloses a readable storage medium, which stores computer instructions, and the computer instructions execute the steps of the paging method when running.
The embodiment of the invention also discloses a base station, which comprises a memory and a processor, wherein the memory is stored with computer instructions capable of running on the processor, and the processor executes the steps of the paging method when running the computer instructions.
The embodiment of the invention also discloses user equipment which comprises a memory and a processor, wherein the memory is stored with computer instructions capable of running on the processor, and the processor executes the steps of the paging method when running the computer instructions.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
the technical scheme of the invention broadcasts resource indication information used for random access triggered by paging indication to user equipment, wherein the resource indication information indicates a special lead code and PRACH resources appointed by each wave beam; at each paging moment of a paging cycle, sending paging indication information to user equipment in a leisure state or an inactive state, wherein the paging indication information indicates a paging state of a user in each paging group, and the paging state is paged or not paged; receiving a dedicated preamble transmitted by a first user equipment in a paged paging group, wherein the dedicated preamble is transmitted by the first user equipment by using a PRACH resource designated by a beam in which the first user equipment resides; and sending a paged user equipment identifier to the first user equipment by using a beam corresponding to the PRACH resource used by the first user equipment for sending the special preamble, so that the first user equipment can judge whether to continuously execute random access. The technical scheme of the invention indicates the PRACH resource which is used for paging indication triggering random access and appointing on each wave beam through the resource indication information so that the first user equipment residing on the same wave beam can use the same PRACH resource to send the special lead code, therefore, for the first user equipment using the same PRACH resource, the base station only needs to send the user equipment identification which is paged once, the base station is prevented from sending the user equipment identification which is paged for many times on the same wave beam, and the downlink resource is further saved.
Further, the dedicated preambles correspond to beams one to one, and the receiving the dedicated preamble transmitted by the first user equipment in the paged paging group includes: receiving a dedicated preamble transmitted by the first user equipment corresponding to a beam on which the first user equipment is camped. According to the technical scheme, the special lead codes correspond to the beams one to one, so that the first user equipment can send the corresponding special lead codes according to the resident beams; since the number of beams of the base station is limited, the number of dedicated preambles can be reduced, reducing the complexity of the paging method.
Drawings
Fig. 1 is a flow chart of a paging method according to an embodiment of the present invention;
FIG. 2 is a flow chart of another paging method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a paging signaling interaction in a specific application scenario according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a paging device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another paging device according to an embodiment of the present invention.
Detailed Description
As described in the background art, in the prior art, in the process of performing uplink access according to received paging indication information, whether to be paged is determined by a user, a network is required to transmit a called user identifier on a beam where a user in a paging group resides, information containing the same user identifier may need to be transmitted on multiple beams, and more downlink resources need to be occupied. Or, users in the same paging group on the same beam use different PRACH resources to send access requests, and the network needs to send information containing the same user identifier in different random access response messages carried on the same beam, which increases the overhead of downlink resources.
The technical scheme of the invention indicates the PRACH resource which is used for paging indication triggering random access and appointing on each wave beam through the resource indication information so that the first user equipment residing on the same wave beam can use the same PRACH resource to send the special lead code, therefore, for the first user equipment using the same PRACH resource, the base station only needs to send the user equipment identification which is paged once, the base station is prevented from sending the user equipment identification which is paged for many times on the same wave beam, and the downlink resource is further saved.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 1 is a flowchart of a paging method according to an embodiment of the present invention.
The paging method shown in fig. 1 may be used on the base station side, and the paging method may include the following steps:
step S101: broadcasting resource indication information used for random access triggered by paging indication to user equipment, wherein the resource indication information indicates a special lead code and PRACH resources appointed by each wave beam;
step S102: at each paging moment of a paging cycle, sending paging indication information to user equipment in a leisure state or an inactive state, wherein the paging indication information indicates a paging state of a user in each paging group, and the paging state is paged or not paged;
step S103: receiving a dedicated preamble transmitted by a first user equipment in a paged paging group, wherein the dedicated preamble is transmitted by the first user equipment by using a PRACH resource designated by a beam in which the first user equipment resides;
step S104: and sending a paged user equipment identifier to the first user equipment by using a beam corresponding to the PRACH resource used by the first user equipment for sending the special lead code, so that the first user equipment judges whether to continuously execute random access.
In a specific implementation, in step S101, the base station may indicate, to the ue, the dedicated preamble and a Physical Random Access Channel (PRACH) resource corresponding to each beam through the resource indication information. Wherein each dedicated preamble can be used by a plurality of User Equipments (UEs); the beams correspond to the PRACH resources one to one. For example, beam 1 corresponds to PRACH1, beam 2 corresponds to PRACH2, and beam 3 corresponds to PRACH 3.
In this embodiment, the dedicated preamble is dedicated to a random access procedure triggered by a paging indicator.
Further, the dedicated preamble may include a preamble corresponding to one-to-one for each paging group, or a preamble corresponding to one-to-one for each beam, or a preamble corresponding to a random access procedure dedicated to paging indication triggering and used in common for all paging groups of all beams.
Specifically, the base station may send the resource indication information through system information, and the UE may obtain the resource indication information by decoding the system information. The PRACH resource may be for the UE to send a dedicated preamble, and the PRACH resource may be a time-frequency location of the resource. More further, since the size of the PRACH Resource is fixed, for example, 6 Physical Resource Blocks (PRBs), the PRACH Resource may be a starting position of a time domain and a starting position of a frequency domain; or may be an index of the PRB.
In a specific implementation, each paging cycle has multiple paging occasions, and in step S102, the base station sends paging indication information to the ue in the idle state or the inactive state at each paging occasion to indicate the paging status of the users in each paging group. Wherein the paging status of the user in the paging group may indicate whether the user equipment in the paging group is paged.
Specifically, the paging status in the paging group may be indicated in a bitmap (bitmap) manner, where 0 represents that the corresponding paging group is paged, and 1 represents that the corresponding paging group is not paged; alternatively, 1 represents that the corresponding paging group is paged, and 0 represents that the corresponding paging group is not paged.
After receiving the paging indication information, the ue may determine whether the paging group to which the ue belongs is paged according to the paging indication information. If the paging group where the user equipment is located is paged, the user equipment needs to send a special lead code to the base station; if the paging group in which the user equipment is located is not paged, the user equipment does not need to transmit a dedicated preamble to the base station. Further, the user equipment may use PRACH resources specified by its camped beam. Further, in step S103, the base station may receive the dedicated preamble transmitted by the first user equipment in the paged paging group.
It is understood that the first user equipment in the embodiment of the present invention refers to the user equipment belonging to the paged paging group.
It will be appreciated by those skilled in the art that the process of the first user equipment transmitting the dedicated preamble to the base station may be a process of initiating random access.
Further, in step S104, a beam corresponding to the PRACH resource used by the first user equipment for transmitting the dedicated preamble is used to transmit a paged user equipment identifier to the first user equipment, so that the first user equipment determines whether to continue random access. That is, the base station may transmit the paged user equipment identity using the beam receiving the dedicated preamble.
The first user equipment can compare the own user equipment identification with the paged user equipment identification after receiving the paged user equipment identification, if the own user equipment identification is consistent with the paged user equipment identification, the random access is continuously carried out to the base station, otherwise, the random access is not required to be continuously carried out.
In this embodiment, the ue may initiate a Random Access request using a dedicated preamble specified by the base station, and the base station determines a downlink beam corresponding to the request according to the received dedicated preamble or a Physical Random Access Channel (PRACH) resource, and then indicates a paged user list on the beam through a Random Access response message. The user equipment is used for checking the user equipment identification of the user equipment and the user equipment identification indicated in the access response message, if the user equipment identifications are matched, the paging of the user equipment is successful, and the user equipment continues to perform a random access process; if the user equipment identifications do not match, paging the user equipment fails, and the user equipment terminates the access process.
It should be noted that the ue identifier may be a Serving Temporary Mobile Subscriber Identity (S-TMSI) or an International Mobile Subscriber Identity (IMSI), which is not limited in this embodiment of the present invention.
In the embodiment of the invention, the designated PRACH resource is randomly accessed to each beam by the resource indication signal indication paging indication, so that the first user equipment residing on the same beam can use the same PRACH resource to send the special lead code, and therefore, for the first user equipment using the same PRACH resource, the base station only needs to send the identification of the paged user equipment once, thereby avoiding the base station from sending the identification of the paged user equipment for multiple times on the same beam and further saving the downlink resource.
Further, the base station may carry the identifier of the paged ue in the access response message, and send the access response message to the first ue. The embodiment of the invention can avoid that the base station sends the access response message including the identification information of the called user for many times on the same wave beam by appointing the PRACH resource used for paging reported based on the wave beam, thereby reducing the expense of downlink resources.
Preferably, the dedicated preambles correspond to paging groups one to one, and step S103 may include the following steps: receiving a dedicated preamble transmitted by the first user equipment and corresponding to a paging group to which the first user equipment belongs.
In this embodiment, the dedicated preambles correspond to paging groups one to one, for example, paging group PG1 corresponds to dedicated preamble P1, paging group PG2 corresponds to dedicated preamble P2, and paging group PG3 corresponds to dedicated preamble P3. The first user equipment may determine the dedicated preamble used by the first user equipment according to the paging group to which the first user equipment belongs, and transmit the determined dedicated preamble using the PRACH resource specified by the beam on which the first user equipment resides. The base station receives a dedicated preamble corresponding to a paging group to which the first user equipment belongs using a beam on which the first user equipment resides.
Further, step S104 may include the steps of: determining a paging group to which the first user equipment belongs according to a special lead code sent by the first user equipment; and sending the user equipment identification paged in the paging group to which the first user equipment belongs to the first user equipment by using the beam corresponding to the PRACH resource used by the special preamble sent by the first user equipment.
In this embodiment, when the base station sends the paged ue identifier, to avoid repeated sending and save downlink resources, the corresponding paging group may be determined according to the dedicated preamble sent by the first ue, and then the paged ue identifier in the paging group to which the base station belongs may be sent to the first ue. Because the user equipment residing in the same beam uses the same PRACH resource and the user equipment belonging to the same paging group uses the same special lead code, the base station only needs to send the identification of the paged user equipment once for the user equipment in the same paging group on the same beam, thereby saving the downlink resource.
In a specific application scenario of the present invention, the base station indicates each paging group PG through the system informationkThe corresponding special Preamble is PreamblekK is 1-8; each BeamnThe designated PRACH resource used for paging access is PRACHnAnd n is 1 to 4. At the paging time PO3, the network transmits the paging status of the user equipment in each paging group at the paging time PO3 by beam sweep, and the paging indication information is 01010001, i.e. the paging group PG1，PG5，PG7The user equipment is paged. Wherein the UE1 belongs to the paging group PG1UE2 belongs to paging group PG5UE3 belongs to paging group PG5UE4 belongs to paging group PG8. Therefore, UE1, UE2, and UE3 need to perform a random access procedure.
Wherein, the UE1 resides on beam 1, so the UE1 is on the PRACH resource PRACH designated by beam 11Up-sending dedicated Preamble1Giving the base station;
UE2 resides on beam 2, so UE2 is on the PRACH resource PRACH designated by beam 22Up-sending dedicated Preamble5Giving the base station;
UE3 resides on beam 3, so UE3 is on the PRACH resource PRACH designated by beam 33Up-sending dedicated Preamble5To the base station.
The base station receives the special Preamble corresponding to the beam 1, the beam 2 and the beam 31、Preamble5And Preamble5And then, transmitting the user identification of the called user equipment in the corresponding paging group on the corresponding beam. That is, the base station transmits paging group PG on beam 11The user identification of all the paged user equipment; base station transmits paging group PG on beam 25The user identification of all the paged user equipment; base station transmits paging group PG on beam 35The subscriber identities of all paged user equipments.
Preferably, step S104 may include the steps of: and using the beam corresponding to the PRACH resource used by the special lead code sent by the first user equipment to send the user equipment identification paged in all paging groups at the current paging moment to the first user equipment.
In this embodiment, the base station may send the paged ue identities in all paging groups to the first ue. Specifically, when the base station does not determine the paging group to which the first user equipment belongs, the base station may send the paged user equipment identifiers in all the paging groups to the first user equipment, so as to ensure normal paging.
Further, the dedicated preambles correspond to beams one to one, and step S103 may include the following steps: receiving a dedicated preamble transmitted by the first user equipment corresponding to a beam on which the first user equipment is camped.
In the present embodiment, the dedicated preambles correspond to the beams one to one, for example, beam 1 corresponds to dedicated preamble P1, beam 2 corresponds to dedicated preamble P2, and beam 3 corresponds to dedicated preamble P3. The first user equipment may determine the dedicated preamble used by the first user equipment according to the beam on which the first user equipment resides, and transmit the determined dedicated preamble using the PRACH resource specified by the beam on which the first user equipment resides. The base station receives a dedicated preamble corresponding to a beam on which the first user equipment camps using the beam on which the first user equipment camps.
The base station indicates different beams through the system information to be used for paging and indicating PRACH resources used for triggering each beam to carry out uplink access, simultaneously defines the lead code information of the paging access of the users on the beams, and the users residing on the different beams carry out the uplink access process by using the PRACH resources and the lead codes indicated by the users.
Since the number of paging groups in the prior art is usually large, if the dedicated preamble codes correspond to the paging groups one to one, the number of dedicated preamble codes is large, and the paging complexity is increased. The embodiment of the invention enables the first user equipment to send the corresponding special lead codes according to the resident wave beams by corresponding the special lead codes to the wave beams one by one; since the number of beams of the base station is limited, the number of dedicated preambles can be reduced, reducing the complexity of the paging method.
In a specific application scenario of the present invention, the base station indicates the Beam through the system informationkThe corresponding special Preamble is PreamblekK is 1-4; beamkThe designated PRACH resource is PRACHk. At the paging time PO3, the base station transmits the paging status of each paging group at the paging time PO3 by beam sweeping. The paging indication information is 01010001, i.e. paging group PG1，PG5，PG7The user equipment is paged. Wherein the UE1 belongs to the paging group PG1UE2 belongs to paging group PG5UE3 belongs to paging group PG5UE4 belongs to paging group PG8. Therefore, UE1, UE2, and UE3 need to perform a random access procedure.
Wherein, the UE1 resides on beam 1, so the UE1 is on the PRACH resource PRACH designated by beam 11Up-sending dedicated Preamble1Giving the base station;
UE2 resides on beam 2, so UE2 is on the PRACH resource PRACH designated by beam 22Up-sending dedicated Preamble2Giving the base station;
UE3 resides on beam 3, so UE3 is on the PRACH resource PRACH designated by beam 33Up-sending dedicated Preamble3To the base station.
The base station receives the special Preamble corresponding to the beam 1, the beam 2 and the beam 31、Preamble2And Preamble3And then, transmitting the user identifications of the called user equipment in all the paging groups on the corresponding beams. That is, the base station transmits the identities of all the paged ues in the paging group at the paging time PO3 on beam 1; the base station sends the user equipment identifications paged in all paging groups at the paging time PO3 on the beam 2; the base station transmits on beam 3 the identities of all the user equipments paged in the paging group at paging occasion PO 3.
Preferably, step S104 shown in fig. 1 may include the steps of: determining RA-RNTI according to PRACH resources used by the first user equipment; scrambling a physical downlink control channel by using an RA-RNTI (random access-radio network temporary identifier) and indicating a resource position of a random access response message so as to enable the first user equipment to decode at the resource position of the random access response message to obtain the random access response message, wherein the random access response message comprises the paged user equipment identifier.
In this embodiment, a Random Access Radio Network Temporary Identity (RA-RNTI) may be determined according to a PRACH resource used by the first user equipment to transmit the dedicated preamble. The base station scrambles a Physical Downlink Control Channel (PDCCH) by using the RA-RNTI, and indicates the resource position of the random access response message in the PDCCH. The first user equipment may receive the random access response message according to a resource location indicated in the PDCCH by monitoring the PDCCH scrambled with the RA-RNTI if the monitoring is successful. And if the lead code index in the header of the random access response message is confirmed to be the lead code sent by the first user equipment, the random access response message is successfully received, so that the paged user equipment identification carried in the random access response message is obtained.
Furthermore, the first user equipment can compare the user equipment identification of the first user equipment with the user equipment identification carried in the response message, and if the user equipment identification is consistent with the user equipment identification carried in the response message, the subsequent access process is continued; if not, the subsequent access procedure is terminated.
In a variation of the present invention, the UE performs a normal random access procedure using a random access procedure preamble triggered by a paging indicator, and the base station sends an identifier of a called user through a paging message. The time interval between the time when the UE receives the paging indication and the time when the paging message is received is the waiting time. Specifically, the waiting time may be indicated by a fixed value through system information, or may be notified of a time interval for receiving a paging message through downlink control information carrying a paging indication.
Specifically, the Paging message may indicate the frequency domain resource location according to a PDCCH scrambled by a normal Paging-Radio Network temporary Identity (P-RNTI).
Specifically, the paging group corresponds to the preamble one to one, and a P-RNTI corresponding to the paging group can be defined, and the user equipment in the paging group uses the PDCCH scrambled by the P-RNTI corresponding to the paging group to obtain the frequency domain resource location of the paging message. The paging message contains the identification of the paged user equipment in the paging group.
Specifically, the beams correspond to preambles in a one-to-one manner, and the preambles are used for a random access procedure triggered by a paging indicator, and a PDCCH scrambled by a P-RNTI defined in the prior art can be used to obtain a frequency domain resource location of a paging message. The paging message contains the identities of the paged user equipments in all paging groups.
Fig. 2 is a flowchart of another paging method according to an embodiment of the present invention.
The paging method shown in fig. 2 may be used on the user equipment side, and the paging method may include the following steps:
step S201: receiving resource indication information used for random access triggered by paging indication broadcast by a base station, wherein the resource indication information indicates a special lead code and PRACH resources appointed by each wave beam;
step S202: if the paging time in the paging cycle is in a leisure state or an inactive state, receiving paging indication information, wherein the paging indication information indicates the paging state of users in each paging group, and the paging state is paged or not paged;
step S203: if the paging group belongs to the paged paging group, transmitting the special preamble by using PRACH resources specified by the resident beam;
step S204: and receiving the paged user equipment identifier sent by the base station to judge whether to continue to execute random access, wherein the base station sends the paged user equipment identifier by using a beam corresponding to the PRACH resource used for sending the special lead code.
In a specific implementation, in step S201, the ue receives a dedicated preamble indicated by the base station and PRACH resources specified by each beam. In step S202, if the user equipment is in a leisure state or an inactive state at the paging occasion, the paging indication information is received. The ue may determine the paging status of the user in the paging group to which the ue belongs according to the paging indication information, and if the paging group to which the ue belongs is paged, in step S203, the dedicated preamble is sent to the base station using the PRACH resource specified by the beam in which the ue resides. Further, in step S204, it is determined whether to continue random access according to the paged ue id sent by the base station.
In the embodiment of the invention, the first user equipment residing on the same wave beam uses the same PRACH resource to send the special lead code, so that for the first user equipment using the same PRACH resource, the base station only needs to send the user equipment identification which is paged once, the base station is prevented from sending the user equipment identification which is paged for many times on the same wave beam, and the downlink resource is further saved.
Preferably, the paging method shown in fig. 2 may further include the steps of: and decoding the resource position of the random access response message indicated by the base station to obtain the random access response message, wherein the random access response message comprises the paged user equipment identifier.
Further, the paging method shown in fig. 2 may further include the following steps: comparing the user equipment identification with the paged user equipment identification to obtain a comparison result; if the comparison result shows that the user equipment identification of the user equipment is consistent with the paged user equipment identification, the random access is continued.
Further, the continuing random access includes: and sending an RRC connection establishment request or an RRC connection recovery request by utilizing the uplink resource carried by the random access response message, and carrying the self user equipment identification.
Specifically, the ue may send an RRC connection setup/RRC connection resume request message on the uplink resource carried in the received access response message, and report a Serving-Temporary Mobile Subscriber Identity (S-TMSI) to the ue. If the contention resolution is successful, the user equipment can receive data after receiving the RRC connection establishment message; and if the contention resolution fails, the user equipment re-initiates a random access process, and at the moment, the access process can use the common PRACH resource and the common preamble corresponding to the beam where the user equipment resides.
Specifically, in a scenario where contention resolution fails, when the ue re-initiates the random access procedure, the preamble sent by the ue and the PRACH resource used for sending the preamble are no longer limited, and a normal random access procedure is performed.
Further, if the user equipment is in an idle state, sending an RRC connection establishment request to the base station; and if the user equipment is in the inactive state, sending an RRC connection recovery request to the base station.
For more details about more specific implementation of the embodiment of the present invention, reference may be made to the description related to the embodiment shown in fig. 1, which is not described herein again.
Fig. 3 is a schematic diagram of paging signaling interaction in a specific application scenario according to an embodiment of the present invention.
As shown in fig. 3, the base station GNB performs step S1: indicating the PRACH resource corresponding to the wave beam and the special lead code to the UE through a System Information (SI);
the base station GNB performs step S2: transmitting the Paging state of each Paging group by using Paging Indication information (PI) in a beam frequency sweeping mode at a specific Paging moment;
the UE performs step S3: confirming whether the paging group is paged or not according to the paging group to which the paging group belongs and the paging indication information;
the UE performs step S4: if the paging group to which the UE belongs is paged, the UE transmits an access request message on a resident beam by using the PRACH resource specified by the beam and a special lead code corresponding to the beam; or, the UE transmits an access request message on the beam where the UE resides by using the PRACH resource specified by the beam and the dedicated preamble corresponding to the paging group of the UE;
the base station GNB performs step S5: the GNB determines all paged user equipment identifications in a paging group to which the UE belongs on a beam on which the UE resides; or, the GNB determines all paged user equipment identifiers at the paging time on the beam where the UE resides, and adds a random access response message;
the base station GNB performs step S6: determining RA-RNTI of the UE according to PRACH resources used by the preamble sent by the UE, and scrambling the PDCCH by using the RA-RNTI to indicate the resource position of the random access response message;
the UE performs step S7: the UE checks the self identification and the user equipment identification in the random access response message, and confirms whether the paging is carried out or not;
the UE performs step S8: if the UE is paged, the UE sends a Message 3(Message3, Msg3), and the Msg3 carries the RRC connection establishment/RRC connection recovery request and the S-TMSI of the UE;
the base station GNB performs step S9: if the competition is successfully solved, sending a Message 4(Message 4, Msg4), wherein the Msg4 carries an RRC connection establishment Message;
alternatively, the UE performs step S10: and if the competition resolving fails, the UE adopts the public PRACH resource and the public lead code to reinitiate the random access process. Specifically, in a scenario where contention resolution fails, when the ue re-initiates the random access procedure, the preamble sent by the ue and the PRACH resource used for sending the preamble are no longer limited, and a normal random access procedure is performed.
Fig. 4 is a schematic structural diagram of a paging device according to an embodiment of the present invention.
The paging device 30 shown in fig. 4 may be used on the base station side, and the paging device 30 may include a resource indication information sending module 301, a paging indication information sending module 302, a preamble receiving module 303, and a user equipment identity sending module 304.
The resource indication information sending module 301 is adapted to broadcast resource indication information for random access triggered by a paging indication to the user equipment, where the resource indication information indicates a dedicated preamble and PRACH resources specified by each beam; the paging indication information sending module 302 is adapted to send paging indication information to the user equipment in the leisure state or the inactive state at each paging time of the paging cycle, where the paging indication information indicates a paging state of the user in each paging group, and the paging state is paged or not paged; the preamble receiving module 303 is adapted to receive a dedicated preamble transmitted by a first user equipment in a paged paging group, the first user equipment transmitting the dedicated preamble using PRACH resources specified by a beam on which the first user equipment resides; the ue identity sending module 304 is adapted to send a paged ue identity to the first ue using a beam corresponding to the PRACH resource used by the first ue to send the dedicated preamble, so that the first ue determines whether to continue performing random access.
The PRACH resource appointed by each wave beam is indicated through the resource indication signal, so that the first user equipment residing on the same wave beam can use the same PRACH resource to send the special lead code, and therefore, for the first user equipment using the same PRACH resource, the base station only needs to send the user equipment identification which is paged once, the base station is prevented from sending the user equipment identification which is paged for multiple times on the same wave beam, and further the downlink resource is saved.
Preferably, the dedicated preambles correspond to paging groups one to one, and the preamble receiving module 303 may include a first preamble receiving unit 3031, where the first preamble receiving unit 3031 is adapted to receive the dedicated preamble, which is sent by the first user equipment and corresponds to the paging group to which the first user equipment belongs.
Further, the ue identity sending module 304 may include a paging group determining unit 3041 and a first paged ue identity sending unit 3042, where the paging group determining unit 3041 is adapted to determine a paging group to which the first ue belongs according to a dedicated preamble sent by the first ue; the first paged ue identity transmitting unit 3042 is adapted to transmit a paged ue identity in a paging group to which the first ue belongs to, to the first ue using a beam corresponding to a PRACH resource used by the first ue to transmit the dedicated preamble.
Preferably, the ue identity sending module 304 may include a second paged ue identity sending unit 3043, and the second paged ue identity sending unit 3043 is adapted to send the paged ue identities in all paging groups at the current paging time to the first ue by using the beam corresponding to the PRACH resource used by the first ue to send the dedicated preamble.
Further, the dedicated preambles correspond to beams one to one, and the preamble receiving module 303 may include a second preamble receiving unit 3032, wherein the second preamble receiving unit 3032 is adapted to receive the dedicated preamble transmitted by the first user equipment and corresponding to the beam where the first user equipment resides.
Preferably, the user equipment identity sending module 304 may include an RA-RNTI determining unit 3044 and a random access response sending unit 3045, the RA-RNTI determining unit 3044 is adapted to determine an RA-RNTI according to PRACH resources used by the first user equipment; the random access response sending unit 3045 is adapted to scramble the physical downlink control channel with the RA-RNTI and indicate a resource location of a random access response message, so that the first user equipment decodes at the resource location of the random access response message to obtain the random access response message, where the random access response message includes the paged user equipment identifier.
For more details of the operation principle and the operation mode of the paging device 30, reference may be made to the description of the embodiment shown in fig. 1, and details are not repeated here.
Fig. 5 is a schematic structural diagram of another paging device according to an embodiment of the present invention.
The paging apparatus 40 shown in fig. 5 may be used on the user equipment side, and the paging apparatus 40 may include a resource indication information receiving module 401, a paging indication information receiving module 402, a preamble transmitting module 403, and a user equipment identity receiving module 404.
The resource indication information receiving module 401 is adapted to receive resource indication information used for random access triggered by a paging indication broadcast by a base station, where the resource indication information indicates a dedicated preamble and PRACH resources specified by each beam; the paging indication information receiving module 402 is adapted to receive paging indication information when a paging time of a paging cycle is in a leisure state or an inactive state, where the paging indication information indicates a paging state of users in each paging group, and the paging state is paged or not paged; the preamble transmission module 403 is adapted to transmit the dedicated preamble using the PRACH resource specified by the camped beam when belonging to the paged paging group; the ue identity receiving module 404 is adapted to receive a paged ue identity sent by the base station, so as to determine whether to continue performing random access, where the base station sends the paged ue identity using a beam corresponding to the PRACH resource used for sending the dedicated preamble.
In the embodiment of the invention, the user equipment residing on the same wave beam uses the same PRACH resource to send the special lead code, so that for the user equipment using the same PRACH resource, the base station only needs to send the paged user equipment identification for one time, the base station is prevented from sending the paged user equipment identification for multiple times on the same wave beam, and the downlink resource is further saved.
Preferably, the ue identity receiving module 404 may include a decoding receiving unit (not shown), and the decoding receiving unit is adapted to decode the random access response message at the resource location of the random access response message indicated by the base station, where the random access response message includes the paged ue identity.
Preferably, the paging apparatus 40 shown in fig. 5 may further include a comparing module 405 and a random access module 406, where the comparing module 405 is adapted to compare the ue identifier with the paged ue identifier to obtain a comparing result; the random access module 406 is adapted to continue random access when the comparison result indicates that the ue identifier of the ue is consistent with the paged ue identifier.
Further, the random access module 406 may include a first access unit 4061, where the first access unit 4061 is adapted to send an RRC connection establishment request or an RRC connection recovery request by using the uplink resource carried in the random access response message, and carry the self-ue identifier.
For more contents of the operation principle and the operation mode of the paging device 40, reference may be made to the description related to the embodiments shown in fig. 1 and fig. 2, and details are not repeated here.
The embodiment of the invention also discloses a readable storage medium, which stores computer instructions, and when the computer instructions are executed, the steps of the paging method shown in fig. 1 or fig. 2 can be executed. The storage medium may include ROM, RAM, magnetic or optical disks, etc.
The embodiment of the invention also discloses a base station which can comprise a memory and a processor, wherein the memory is stored with computer instructions capable of running on the processor. The processor, when executing the computer instructions, may perform the steps of the paging method shown in fig. 1.
The embodiment of the invention also discloses user equipment which can comprise a memory and a processor, wherein the memory is stored with computer instructions capable of running on the processor. The processor, when executing the computer instructions, may perform the steps of the paging method shown in fig. 2. The user equipment includes but is not limited to a mobile phone, a computer, a tablet computer and other terminal equipment.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (25)

1. A method for paging, comprising:
broadcasting resource indication information used for random access triggered by paging indication to user equipment, wherein the resource indication information indicates a special lead code and PRACH resources appointed by each wave beam;
at each paging moment of a paging cycle, sending paging indication information to user equipment in a leisure state or an inactive state, wherein the paging indication information indicates a paging state of a user in each paging group, and the paging state is paged or not paged;
receiving a dedicated preamble transmitted by a first user equipment in a paged paging group, wherein the dedicated preamble is transmitted by the first user equipment by using a PRACH resource designated by a beam in which the first user equipment resides;
using a beam corresponding to the PRACH resource used by the first user equipment for sending the special lead code to send a paged user equipment identifier to the first user equipment, so that the first user equipment judges whether to continuously execute random access;
the sending, to the first user equipment, a paged user equipment identifier using a beam corresponding to the PRACH resource used by the first user equipment to send the dedicated preamble includes: determining RA-RNTI according to PRACH resources used by the first user equipment; scrambling a physical downlink control channel by using the RA-RNTI, and indicating a resource position of a random access response message, so that the first user equipment decodes at the resource position of the random access response message to obtain the random access response message, wherein the random access response message comprises the paged user equipment identifier.
2. The paging method according to claim 1, wherein the dedicated preambles correspond to paging groups one to one, and the receiving the dedicated preamble transmitted by the first user equipment in the paged paging group comprises:
receiving a dedicated preamble transmitted by the first user equipment and corresponding to a paging group to which the first user equipment belongs.
3. The paging method according to claim 2, wherein said transmitting the paged ue identity to the first ue using the beam corresponding to the PRACH resource used by the first ue to transmit the dedicated preamble comprises:
determining a paging group to which the first user equipment belongs according to a special lead code sent by the first user equipment;
and using the beam corresponding to the PRACH resource used by the first user equipment for sending the special preamble code, and sending the paged user equipment identification in the paging group to which the first user equipment belongs to the first user equipment.
4. The paging method according to claim 1, wherein said transmitting the paged ue identity to the first ue using the beam corresponding to the PRACH resource used by the first ue to transmit the dedicated preamble comprises:
and using the beam corresponding to the PRACH resource used by the special lead code sent by the first user equipment to send the user equipment identification paged in all paging groups at the current paging moment to the first user equipment.
5. The paging method according to claim 4, wherein the dedicated preambles correspond to beams one-to-one, and the receiving the dedicated preamble transmitted by the first user equipment in the paged paging group comprises:
receiving a dedicated preamble transmitted by the first user equipment corresponding to a beam on which the first user equipment is camped.
6. The paging method according to claim 1, wherein said transmitting the paged ue identity to the first ue using the beam corresponding to the PRACH resource used by the first ue to transmit the dedicated preamble comprises:
indicating the waiting time for receiving the paging message to the first user equipment, wherein the paging message comprises a paged user equipment identifier, and the waiting time is the time difference between the moment when the first user equipment receives the paging indication information and the moment when the first user equipment receives the paging message;
and sending the paging message to the first user equipment by using a beam corresponding to the PRACH resource used by the first user equipment for sending the special preamble.
7. The paging method according to claim 6, characterized in that said waiting time is indicated to said first user equipment by system information.
8. The paging method according to claim 6, wherein said indicating to said first user equipment a waiting time for receiving a paging message comprises:
and indicating the waiting time through downlink control information carrying the paging indication information.
9. The paging method according to claim 6, wherein the first ue sends the dedicated preamble for random access triggered by paging indication using PRACH resource corresponding to an optimal downlink beam, and receives the paging message according to the waiting time if a random access response message is successfully received.
10. A method for paging, comprising:
receiving resource indication information used for random access triggered by paging indication broadcast by a base station, wherein the resource indication information indicates a special lead code and PRACH resources appointed by each wave beam;
if the paging time in the paging cycle is in a leisure state or an inactive state, receiving paging indication information, wherein the paging indication information indicates the paging state of users in each paging group, and the paging state is paged or not paged;
if the paging group belongs to the paged paging group, transmitting the special preamble by using PRACH resources specified by the resident beam;
receiving a paged user equipment identifier sent by the base station for judging whether to continue to execute random access, wherein the base station sends the paged user equipment identifier by using a beam corresponding to the PRACH resource used for sending the special lead code, the paged user equipment identifier is obtained by decoding the resource position of a random access response message, the random access response message comprises the paged user equipment identifier, the resource position of the random access response message is indicated by a physical downlink control channel scrambled by RA-RNTI, and the RA-RNTI is determined according to the PRACH resource.
11. The paging method according to claim 10, wherein said receiving the paged ue identity transmitted by said base station comprises:
and decoding the resource position of the random access response message indicated by the base station to obtain the random access response message, wherein the random access response message comprises the paged user equipment identifier.
12. The paging method according to claim 11, wherein said receiving the paged ue identity transmitted by said base station further comprises:
comparing the user equipment identification with the paged user equipment identification to obtain a comparison result;
if the comparison result shows that the user equipment identification of the user equipment is consistent with the paged user equipment identification, the random access is continued.
13. The paging method according to claim 12, wherein said continuing random access comprises:
and sending an RRC connection establishment request or an RRC connection recovery request by utilizing the uplink resource carried by the random access response message, and carrying the self user equipment identification.
14. A paging device, comprising:
a resource indication information sending module, adapted to broadcast resource indication information for random access triggered by a paging indication to a user equipment, where the resource indication information indicates a dedicated preamble and PRACH resources specified by each beam;
a paging indication information sending module, adapted to send paging indication information to the user equipment in a leisure state or an inactive state at each paging time of a paging cycle, where the paging indication information indicates a paging state of a user in each paging group, and the paging state is paged or not paged;
a preamble receiving module, adapted to receive a dedicated preamble transmitted by a first user equipment in a paged paging group, the first user equipment transmitting the dedicated preamble using the PRACH resource specified by a beam on which the first user equipment resides;
a user equipment identifier sending module, adapted to send a paged user equipment identifier to the first user equipment using a beam corresponding to the PRACH resource used by the first user equipment to send the dedicated preamble, so that the first user equipment determines whether to continue to perform random access;
the user equipment identity sending module comprises: an RA-RNTI determining unit, adapted to determine an RA-RNTI according to PRACH resources used by the first user equipment; a random access response sending unit, adapted to scramble a physical downlink control channel with the RA-RNTI and indicate a resource location of a random access response message, so that the first user equipment decodes at the resource location of the random access response message to obtain the random access response message, where the random access response message includes the paged user equipment identity.
15. The paging device as claimed in claim 14, wherein the dedicated preambles correspond to paging groups one to one, and the preamble receiving module comprises:
a first preamble receiving unit, adapted to receive a dedicated preamble transmitted by the first user equipment and corresponding to a paging group to which the first user equipment belongs.
16. The paging device as claimed in claim 15, wherein said ue identity sending module comprises:
a paging group determining unit, adapted to determine a paging group to which the first user equipment belongs according to a dedicated preamble sent by the first user equipment;
a first paged user equipment identifier sending unit, adapted to send, to the first user equipment, a paged user equipment identifier in a paging group to which the first user equipment belongs, using a beam corresponding to a PRACH resource used by the first user equipment to send the dedicated preamble.
17. The paging device as claimed in claim 14, wherein said ue identity sending module comprises:
and the second paged user equipment identifier sending unit is suitable for sending the user equipment identifiers paged in all paging groups at the current paging moment to the first user equipment by using the beam corresponding to the PRACH resource used by the special lead code sent by the first user equipment.
18. The paging device as claimed in claim 17, wherein the dedicated preambles correspond to beams one to one, and the preamble receiving module comprises:
a second preamble receiving unit adapted to receive a dedicated preamble transmitted by the first user equipment corresponding to a beam on which the first user equipment resides.
19. A paging device, comprising:
a resource indication information receiving module, adapted to receive resource indication information used for random access triggered by a paging indication broadcast by a base station, where the resource indication information indicates a dedicated preamble and PRACH resources specified by each beam;
a paging indication information receiving module, adapted to receive paging indication information when a paging time of a paging cycle is in a leisure state or an inactive state, where the paging indication information indicates a paging state of a user in each paging group, and the paging state is paged or not paged;
a preamble transmission module adapted to transmit the dedicated preamble using PRACH resources specified by a camped beam when belonging to a paged paging group;
a ue identifier receiving module, adapted to receive a paged ue identifier sent by the base station, so as to determine whether to continue performing random access, where the base station sends the paged ue identifier using a beam corresponding to the PRACH resource used for sending the dedicated preamble, and the paged ue identifier is obtained by decoding a resource location of a random access response message, where the random access response message includes the paged ue identifier, the resource location of the random access response message is indicated by a physical downlink control channel scrambled by an RA-RNTI, and the RA-RNTI is determined according to the PRACH resource.
20. The paging device as claimed in claim 19, wherein said ue identity receiving module comprises:
a decoding receiving unit, adapted to decode at a resource location of a random access response message indicated by the base station to obtain the random access response message, where the random access response message includes the paged ue identity.
21. The paging device according to claim 20, characterized by further comprising:
the comparison module is suitable for comparing the user equipment identification with the paged user equipment identification to obtain a comparison result;
and the random access module is suitable for continuing random access when the comparison result shows that the user equipment identification of the random access module is consistent with the paged user equipment identification.
22. The paging device as claimed in claim 21, wherein said random access module comprises: and the first access unit is suitable for sending an RRC connection establishment request or an RRC connection recovery request by utilizing the uplink resource carried by the random access response message and carrying the self user equipment identifier.
23. A readable storage medium having stored thereon computer instructions, wherein the computer instructions are operable to perform the steps of the paging method according to any one of claims 1 to 9 or the paging method according to any one of claims 10 to 13.
24. A base station comprising a memory and a processor, said memory having stored thereon computer instructions executable on said processor, wherein said processor when executing said computer instructions performs the steps of the paging method according to any one of claims 1 to 9.
25. A user equipment comprising a memory and a processor, said memory having stored thereon computer instructions executable on said processor, wherein said processor when executing said computer instructions performs the steps of the paging method of any one of claims 10 to 13.
CN201710685961.4A 2017-08-11 2017-08-11 Paging method and device, readable storage medium, base station and user equipment Active CN109391905B (en)

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