Method and apparatus for transmitting a group page through a ue paging occasion

Abstract

The application provides a method and device for sending group paging through UE paging occasions, the method comprising: a gNB configuring group paging related parameters for a PCCH and determining group paging configuration information; the gNB broadcasting the group paging configuration information of the PCCH; a UE determining its own paging occasion; for any group call / single call, the gNB determines each UE receiving the group call / single call, and sends configuration information of the group call / single call through the PCCH in the nearest available paging occasion of the UE; the UE listens to a PDCCH with CRC scrambled by a P-RNTI in the paging occasion of the UE, when the UE listens to the PDCCH, the UE receives a PDSCH, obtains information on the PCCH from the PDSCH, receives the group call / single call according to the configuration information of the group call / single call on the PCCH, thereby realizing sending of group paging in an NR cell.

Description

Technical Field

[0001] This application relates to the field of communications, and more particularly to a method and apparatus for sending cluster paging during UE paging. Background Technology

[0002] Currently, in Broadband Trunking Communication (B-TRUNC) systems based on Long Term Evolution (LTE) technology, the following two methods are used to send trunking paging messages:

[0003] Method 1: Send cluster paging during the unicast paging time of each User Equipment (UE) via the Paging Control Channel (PCCH).

[0004] Method 2: Send cluster paging through the Trunking Paging Control Channel (TPCCH), define the paging period and paging timing for the TPCCH, and send cluster paging through the TPCCH within the corresponding paging timing in each paging period.

[0005] However, in the evolution of B-TRUNC systems based on LTE technology to B-TRUNC systems based on New Radio Access (NR) technology, the NR-based B-TRUNC system lacks a method for sending trunked paging messages. Therefore, how to send trunked paging messages in NR cells has become an urgent problem to be solved. Summary of the Invention

[0006] This application provides a method and apparatus for sending cluster paging during UE paging, which solves the technical problem of sending cluster paging in B-TRUNC systems based on new radio access technologies.

[0007] The first aspect of this application is to provide a method for sending cluster paging at a UE paging timing, comprising:

[0008] The gNB configures the cluster paging related parameters for the PCCH and determines the cluster paging configuration information for the PCCH.

[0009] When the cluster paging configuration information of the PCCH is different from the existing PCCH configuration information in SIB1, the gNB broadcasts the cluster paging configuration information of the PCCH through SIB1; for each dedicated DL BWP containing a paging search space, when the cluster paging configuration information of the PCCH is different from the existing PCCH configuration information in the configuration information of the BWP, the gNB carries the cluster paging configuration information of the PCCH in the configuration information of the BWP.

[0010] For a UE in the RRC idle state / RRC inactive state, the UE receives SIB1 and determines its own paging timing based on the information on SIB1;

[0011] For a UE in RRC connected state, if the UE's active DLBWP contains a paging search space, the UE determines its own paging timing based on the configuration information of the DLBWP.

[0012] For any group call / single call, the gNB determines each UE that receives the group call / single call. For each UE, the gNB sends the group call / single call via PCCH at the UE's nearest available paging opportunity. A group call / single call list is provided on the PCCH, and the group call / single call list provides the configuration information of the group call / single call.

[0013] For a UE receiving a group call / single call, the UE listens to the PDCCH scrambled with P-RNTI by CRC during its own paging time. When the UE listens to the corresponding PDCCH, the UE receives the corresponding PDSCH and obtains the information on the PCCH from the corresponding PDSCH. The UE receives the group call / single call according to the configuration information of the group call / single call in the group call / single call list in the information on the PCCH. After listening to the corresponding PDCCH, the UE also needs to continue listening to the remaining PDCCH listening time.

[0014] Furthermore, the method also includes:

[0015] For a UE that receives the group call / single call, the UE continues to listen to the PDCCH scrambled with P-RNTI by CRC during its own paging time.

[0016] Furthermore, the method also includes:

[0017] For the group call / single call, when the group call / single call temporarily interrupts service transmission, the gNB sends a deactivation notification through the control channel of the group call / single call. The deactivation notification carries a UE status indication, which is either RRC idle state or RRC inactive state. The deactivation notification also carries the cluster paging cycle and DRX configuration information.

[0018] For a UE receiving the group call / single call, when the UE receives a deactivation notification sent by the gNB through the control channel of the group call / single call, the UE stops receiving the group call / single call; if the deactivation notification carries a UE status indication, the UE enters the RRC state indicated by the UE status indication from the current RRC state: when the UE status indication is RRC idle state / RRC inactive state, the UE enters the RRC idle state / RRC inactive state; if the deactivation notification carries a cluster paging cycle, the UE re-determines its own paging timing according to the cluster paging cycle carried in the deactivation notification; if the deactivation notification carries DRX configuration information, the UE reconfigures its own DRX parameters according to the DRX configuration information carried in the deactivation notification.

[0019] Furthermore, the method also includes:

[0020] For UEs that stop receiving group calls / single calls, the UE continues to listen to the PDCCH scrambled with P-RNTI by CRC during its own paging time.

[0021] Furthermore, the method also includes:

[0022] During the process of the UE listening to the PDCCH scrambled with P-RNTI using CRC, when the UE listens to the corresponding PDCCH, the UE receives the corresponding PDSCH and obtains the information on the PCCH from the corresponding PDSCH. The UE receives new group calls / individual calls according to the group call / individual call list in the information on the PCCH.

[0023] Furthermore, the method also includes:

[0024] When the group call / single call resumes service transmission, the gNB determines each UE that received the group call / single call. For each UE, the gNB sends the group call / single call through the PCCH at the UE's nearest available paging opportunity. The PCCH provides a group call / single call list, which provides configuration information for the group call / single call.

[0025] For a UE receiving a group call / single call, the UE listens to the PDCCH scrambled with P-RNTI by CRC during its own paging time. When the UE listens to the corresponding PDCCH, the UE receives the corresponding PDSCH and obtains the information on the PCCH from the corresponding PDSCH. The UE receives the group call / single call according to the configuration information of the group call / single call in the group call / single call list in the information on the PCCH. After listening to the corresponding PDCCH, the UE also needs to continue listening to the remaining PDCCH listening time.

[0026] A second aspect of this application is to provide a device gNB that sends cluster paging during UE paging, the gNB comprising: a configuration module, a broadcast module, and a transmission module;

[0027] The configuration module is used to: configure cluster paging related parameters for PCCH and determine the cluster paging configuration information of PCCH;

[0028] The broadcast module is used to: broadcast the cluster paging configuration information of the PCCH through SIB1 when the cluster paging configuration information of the PCCH is different from the existing PCCH configuration information in SIB1; and for each dedicated DL BWP containing a paging search space, when the cluster paging configuration information of the PCCH is different from the existing PCCH configuration information in the configuration information of the BWP, carry the cluster paging configuration information of the PCCH in the configuration information of the BWP.

[0029] The sending module is configured to: for any group call / single call, determine each UE receiving the group call / single call, and for each UE, send the group call / single call via PCCH at the nearest available paging opportunity for the UE, wherein a group call / single call list is provided on the PCCH, and the group call / single call list provides configuration information for the group call / single call;

[0030] The gNB further includes a service interruption notification module, used to: for a group call / single call, when the service transmission of the group call / single call is temporarily interrupted, send a deactivation notification through the control channel of the group call / single call, wherein the deactivation notification carries a UE status indication, the UE status indication is RRC idle state or RRC inactive state, the deactivation notification carries a cluster paging period, and the deactivation notification carries DRX configuration information;

[0031] The gNB further includes a service recovery notification module, configured to: determine each UE receiving the group call / single call when a group call / single call resumes service transmission, and for each UE, send the group call / single call via PCCH at the most recent available paging opportunity for the UE, wherein a group call / single call list is provided on the PCCH, and the group call / single call list provides configuration information for the group call / single call.

[0032] A third aspect of this application is to provide a device UE that receives cluster paging during UE paging, the UE comprising: a determining module and a receiving module;

[0033] The determination module is used to: when the UE is in the RRC idle state / RRC inactive state, receive SIB1 and determine the paging timing based on the information on the SIB1; when the UE is in the RRC connected state, if the UE's active DL BWP contains a paging search space, determine the paging timing based on the configuration information of the DL BWP.

[0034] The receiving module is used to: listen to the PDCCH scrambled with P-RNTI using CRC during the paging time; when the corresponding PDCCH is heard, receive the corresponding PDSCH and obtain the information on the PCCH from the corresponding PDSCH; determine the group call / single call to be received according to the group call / single call list in the information on the PCCH, and receive the group call / single call according to the configuration information of the determined group call / single call; after listening to the corresponding PDCCH, the UE also needs to continue listening to the remaining PDCCH listening time.

[0035] The receiving module is also configured to: for a UE receiving the group call / single call, the UE continues to listen to the PDCCH scrambled with P-RNTI for CRC during its own paging time;

[0036] The UE further includes a service interruption handling module, configured to: stop receiving the group call / single call when receiving a deactivation notification sent by the gNB through the group call / single call control channel; if the deactivation notification carries a UE status indication, enter the RRC state indicated by the UE status indication from the current RRC state: when the UE status indication is RRC idle state / RRC inactive state, enter the RRC idle state / RRC inactive state; if the deactivation notification carries a cluster paging cycle, re-determine its own paging timing according to the cluster paging cycle carried in the deactivation notification; if the deactivation notification carries DRX configuration information, reconfigure DRX parameters according to the DRX configuration information carried in the deactivation notification.

[0037] The receiving module is also used to: after stopping receiving the group call / single call, continue to listen to the PDCCH scrambled with P-RNTI by CRC during the paging time;

[0038] The receiving module is also used for: during the process of listening to the PDCCH scrambled with P-RNTI for CRC, when the corresponding PDCCH is detected, the UE receives the corresponding PDSCH and obtains the information on the PCCH from the corresponding PDSCH; when the group call / single call list in the information on the PCCH provides new group call / single call configuration information, the UE can receive the new group call / single call; when the group call / single call list in the information on the PCCH provides configuration information of a group call / single call that was previously interrupted, the UE can continue to receive the group call / single call.

[0039] In the method and device for sending cluster paging based on UE paging timing provided in this application, the gNB configures cluster paging related parameters for the PCCH, determines cluster paging configuration information, and broadcasts the cluster paging configuration information. UEs in different states determine their own paging timing based on the cluster paging configuration information, and then the gNB can send cluster paging to the UE according to the UE's paging timing, thus realizing the sending of cluster paging within the NR cell. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the various embodiments of this application or the prior art, the drawings used in the description of the various embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are part of the embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0041] Figure 1 This is a schematic diagram of the network architecture on which this application is based;

[0042] Figure 2 This is a flowchart illustrating the method for sending cluster paging during UE paging, as provided in Embodiment 1 of this application.

[0043] Figure 3 This is a flowchart illustrating the method for sending cluster paging during UE paging, as provided in Embodiment 2 of this application.

[0044] Figure 4 This is a flowchart illustrating the method for sending cluster paging during UE paging, as provided in Embodiment 3 of this application.

[0045] Figure 5 This is a schematic diagram of the structure of the gNB, a device that sends cluster paging during UE paging, as provided in Embodiment 4 of this application.

[0046] Figure 6 This is a schematic diagram of the structure of a device UE that receives cluster paging during UE paging, as provided in Embodiment 5 of this application. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained based on the embodiments of this application are within the scope of protection of this application.

[0048] To address the aforementioned technical problem of the inability to send trunked paging in B-TRUNC systems based on new radio access technologies, this application provides a method and apparatus for sending trunked paging during UE paging.

[0049] Figure 1 This is a schematic diagram of the network architecture on which this application is based, such as... Figure 1 As shown, the network architecture upon which this application is based consists of gNB11 and UE12. gNB11 is used to transmit cluster paging in the NR cell according to the method of transmitting cluster paging via UE paging timing proposed in this application, and UE12 is used to receive cluster paging in the NR cell according to the method of transmitting cluster paging via UE paging timing proposed in this application.

[0050] Within the NR cell, gNB11 determines the PCCH cluster paging configuration information and broadcasts it within the NR cell. This allows UE12s in different RRC states to determine their own paging timing based on this configuration information. Consequently, gNB11 can send a cluster paging message to a UE12 based on that UE12's paging timing.

[0051] Example 1:

[0052] Figure 2 This is a flowchart illustrating the method for sending cluster paging during UE paging, as provided in Embodiment 1 of this application. Figure 2 As shown, the method includes:

[0053] Step 201: The gNB configures the cluster paging related parameters for the PCCH and determines the cluster paging configuration information of the PCCH.

[0054] In NR cells, the paging search space used to send PCCH scheduling information can be search space 0 or any other search space. This application does not restrict the paging search space when configuring cluster paging-related parameters for the PCCH and determining the cluster paging configuration information for the PCCH; that is, the paging search space can be search space 0 or any other search space.

[0055] In Chapter 7 of the 3GPP Technical Specification (TS) 38.304, the UE uses the following parameters when calculating the paging timing:

[0056] 1) T: Discontinuous Reception (DRX) period of the UE;

[0057] Let T1 represent the default DRX period of the PCCH in System Information Block (SIB) 1, with the unit of T1 being radio frames. If a DRX period is configured for the UE, let T2 represent the configured DRX period for the UE, with the unit of T2 also being radio frames. If no DRX period is configured for the UE, the UE considers T = T1; otherwise, the UE considers T = min{T1, T2}, where min{T1, T2} represents the minimum value between T1 and T2.

[0058] 2) N: Represents the number of paging frames in each DRX cycle of the UE;

[0059] 3) PF_offset: The radio frame offset used when determining the paging frame;

[0060] 4) Ns: Represents the number of paging opportunities configured for each paging frame;

[0061] 5) S: The number of Synchronization Signal / Physical Broadcast Channel Blocks (SSBs) actually transmitted in the NR cell;

[0062] 6) X: Indicates the number of PDCCH listening opportunities configured for each beam direction for each paging opportunity;

[0063] 7) Each paging opportunity contains S*X consecutive PDCCH listening opportunities.

[0064] 8) UE_ID: The identifier used by the UE when calculating the paging frame and paging timing.

[0065] When 5G-S-TMSI is not configured for the UE, the UE_ID is set to 0 by default; otherwise, the UE_ID is determined according to Formula 1:

[0066] UE_ID=5G-S-TMSI mod 1024 (1)

[0067] Based on the above parameters, the UE first determines a paging frame (PF) to be listened to within each DRX cycle, and then determines a paging opportunity (PO) to be listened to within the Ns paging opportunities configured for that paging frame. Within this paging opportunity, the UE listens to each Physical Downlink Control Channel (PDCCH) listening opportunity. Within each PDCCH listening opportunity, it listens to a PDCCH scrambled with Cyclic Redundancy Check (CRC) using Paging-Radio Network Temporary Identity (P-RNTI). When the UE hears a PDCCH scrambled with P-RNTI within a PDCCH listening opportunity, the UE receives the corresponding Physical Downlink Shared Channel (PHS) according to the scheduling information provided in the Downlink Control Information (DCI) format of that PDCCH. When the UE correctly decodes the corresponding PDSCH and obtains the information on the PCCH from the PDSCH, the UE stops listening to subsequent PDCCH listening opportunities within the current paging opportunity, and the UE performs corresponding processing based on the information on the PCCH.

[0068] When the paging search space is search space 0, the PDCCH listening time included in the paging search space and the mapping relationship between the PDCCH listening time and SSB can be found in Chapter 13 of the 3GPP TS38.213 protocol.

[0069] When the paging search space is not search space 0, the listening times of all PDCCHs included in the paging search space can be determined based on the configuration information of the paging search space. The mapping relationship between PDCCH listening times and SSBs within the paging search space is described in Chapter 7 of the 3GPP TS38.304 protocol.

[0070] The process by which the UE determines the paging frame PF, the paging timing PO, and the S*X consecutive PDCCH listening times contained in the paging search space configuration information, T, N, PF_offset, Ns, X, and UE_ID is described in Chapter 7 of the 3GPP TS38.304 protocol and will not be repeated here.

[0071] In order to send a trunking paging, the gNB needs to configure trunking paging related parameters for the PCCH: Tb represents the trunking paging period configured by the gNB for the PCCH, and the unit of Tb is radio frames; Nb represents the number of trunking paging frames configured by the gNB for each trunking paging period; PF_offset_b represents the radio frame offset used when determining the trunking paging frame; Nsb represents the number of trunking paging opportunities configured for each trunking paging frame; and Xb represents the number of PDCCH listening opportunities included in each beam direction within a trunking paging opportunity.

[0072] When the set of cluster paging-related parameters (Tb, Nb, PF_offset_b, Nsb, Xb) configured by gNB for PCCH is the same as the set of paging-related parameters (T, N, PF_offset, Ns, X) configured by gNB for PCCH, the cluster paging period, cluster paging frame, and cluster paging timing configured by gNB for PCCH are the same as the paging period, paging frame, and paging timing, respectively.

[0073] When the set of cluster paging-related parameters (Tb, Nb, PF_offset_b, Nsb, Xb) configured by the gNB for the PCCH are not exactly the same as the set of paging-related parameters (T, N, PF_offset, Ns, X) configured by the gNB for the PCCH, the gNB determines the paging timing of each cluster paging frame in the following manner:

[0074] When the paging search space is search space 0, the PDCCH listening opportunities included in the paging search space and the mapping relationship between the PDCCH listening opportunities and SSBs are described in Chapter 13 of the 3GPP TS38.213 protocol. When the paging search space is search space 0, the number of cluster paging opportunities Nsb configured for each cluster paging frame is 1 or 2.

[0075] When Nsb=1, a cluster paging timing is configured for each cluster paging frame. All PDCCH listening timings from the first PDCCH listening timing contained in the cluster paging frame to the most recent cluster paging frame or before the most recent paging frame belong to the cluster paging timing.

[0076] When Nsb=2, each cluster paging frame is configured with 2 cluster paging opportunities. The first cluster paging opportunity consists of the PDCCH listening opportunity contained in the first half-frame of the cluster paging frame, and the second cluster paging opportunity consists of the PDCCH listening opportunity contained in the second half-frame of the cluster paging frame.

[0077] When the paging search space is not search space 0, the configuration information of the paging search space can determine the listening time of each PDCCH contained in the paging search space. Starting from the first PDCCH listening time contained in the cluster paging frame, each PDCCH listening time is assigned an index in chronological order, with the starting index being 0. Within the paging search space, the Nsb cluster paging times configured for each cluster paging frame are determined according to method 1 or method 2:

[0078] Method 1:

[0079] The cluster paging opportunity with index i consists of S*Xb consecutive PDCCH listening opportunities. The index of the first PDCCH listening opportunity of this cluster paging opportunity is: S*Xb*i, i = 0, ..., Nsb-1.

[0080] Method 2:

[0081] gNB specifies the index of the first PDCCH listening time of each of the Nsb cluster paging times. Each cluster paging time consists of S*Xb consecutive PDCCH listening times starting from the first PDCCH listening time.

[0082] After determining the location of each cluster paging opportunity according to method 1 or method 2, the gNB determines the mapping relationship between the PDCCH listening opportunity and the SSB within each cluster paging opportunity: In the S*Xb PDCCH listening opportunities contained in each cluster paging opportunity, the x*S+Kth PDCCH listening opportunity corresponds to the Kth SSB, x=0,1,……,Xb-1, K=1,……,S.

[0083] Based on the above processing, the gNB determines the PCCH cluster paging configuration information. The PCCH cluster paging configuration information includes:

[0084] 1) Cluster paging cycle Tb;

[0085] 2) The number of cluster paging frames Nb in each cluster paging cycle

[0086] 3) The radio frame offset PF_offset_b used to determine the cluster paging frame;

[0087] 4) The number of cluster paging opportunities, Nsb, configured for each cluster paging frame;

[0088] 5) The number of PDCCH listening opportunities Xb included in each cluster paging opportunity in each beam direction;

[0089] 6) List of starting positions for cluster paging opportunities (optional): This list consists of the index of the first PDCCH listening opportunity in each of the Nsb cluster paging opportunities.

[0090] Ideally, Tb / T1 = 2 m1 m1 is an integer; preferably, Nb / N = 2 m2 m2 is an integer.

[0091] In summary, the paging search space configuration information determines the paging search space used by the PCCH. Within the paging search space, the gNB configures the cluster paging cycle, cluster paging frame, and cluster paging timing for the PCCH according to the PCCH's cluster paging configuration information.

[0092] Step 202: When the cluster paging configuration information of the PCCH differs from the existing PCCH configuration information in SIB1, the gNB broadcasts the cluster paging configuration information of the PCCH through SIB1. For each dedicated DLBWP containing a paging search space, when the cluster paging configuration information of the PCCH differs from the existing PCCH configuration information in the configuration information of the BWP, the gNB carries the cluster paging configuration information of the PCCH in the configuration information of the BWP.

[0093] In this embodiment, after configuring the cluster paging related parameters for the PCCH and determining the cluster paging configuration information of the PCCH, the cluster paging configuration information can be broadcast so that the UE can know the cluster paging configuration information.

[0094] Specifically, when Tb is different from T1, or Nb is different from N, or PF_offset_b is different from PF_offset, or Nsb is different from Ns, or Xb is not X, the cluster paging configuration information of the PCCH needs to be broadcast.

[0095] Specifically, when the cluster paging configuration information of the PCCH is different from the existing PCCH configuration information in SIB1, the gNB broadcasts the cluster paging configuration information of the PCCH through SIB1.

[0096] Currently, the PCCH is transmitted on the initial DL BWP. When a dedicated DL BWP contains a paging search space, the PCCH configuration information is carried in the configuration information of that DL BWP, so that UEs using that DL BWP as their active DL BWP can listen for paging on the PCCH on that DL BWP. After the gNB determines the cluster paging configuration information of the PCCH, for a dedicated DL BWP containing a paging search space, if the cluster paging configuration information of the PCCH differs from the existing PCCH configuration information in the configuration information of that BWP, the cluster paging configuration information of the PCCH is carried in the configuration information of that DL BWP, so that UEs using that DL BWP as their active DL BWP can listen for cluster paging on the PCCH on that DL BWP.

[0097] Step 203: For a UE in the RRC idle state / RRC inactive state, the UE receives SIB1 and determines its own paging timing based on the information on SIB1.

[0098] In this embodiment, after the gNB broadcasts the cluster paging configuration information through SIB1, the UE in the RRC idle state / RRC inactive state can receive SIB1 to determine its own paging timing.

[0099] Specifically, when the UE is a regular UE that does not support MBS functionality, the UE determines its paging timing based on the existing PCCH configuration information on SIB1. The method by which the UE determines its paging timing is described in Chapter 7 of the 3GPP TS38.304 protocol and will not be repeated here.

[0100] When the UE supports MBS functionality, if SIB1 does not contain PCCH cluster paging configuration information, the UE determines its paging timing based on the existing PCCH configuration information in SIB1. The method for the UE to determine its paging timing is detailed in Chapter 7 of the 3GPP TS38.304 protocol and will not be repeated here. If SIB1 contains PCCH cluster paging configuration information, the UE determines its paging timing based on the PCCH cluster paging configuration information. Specifically, the method for the UE to determine its paging timing based on the PCCH cluster paging configuration information is as follows:

[0101] Step S1: The UE determines the frame number (SFN) of the cluster paging frames it needs to listen to in each cluster paging cycle according to Formula 2:

[0102] (SFN+PF_offset_b)mod Tb=(Tb div Nb)*(UE_ID mod Nb) (2)

[0103] Step S2: Among the Nsb cluster paging opportunities configured for the cluster paging frames to be monitored, the UE determines the index of the cluster paging opportunity to be monitored according to Formula 3:

[0104] i_s=floor(UE_ID / Nb)mod Nsb (3)

[0105] Step S3: The UE determines the location of the S*Xb consecutive PDCCH listening opportunities that need to be listened to within the cluster paging opportunity that needs to be listened to.

[0106] When the paging search space is search space 0, Nsb = 1 or 2. The location of the PDCCH listening time included in each cluster paging time and the mapping relationship between the PDCCH listening time and SSB within each cluster paging time are shown in step S201.

[0107] When the paging search space is not 0, starting from the first PDCCH listening opportunity contained in the cluster paging frame that needs to be listened to, the UE assigns an index to each PDCCH listening opportunity in chronological order, with the starting index being 0.

[0108] If the PCCH cluster paging configuration information provides a list of cluster paging timing start positions, let D(I) represent the I-th index among the Nsb indices provided in the list, where I = 1, ..., Nsb. The index of the first PDCCH listening timing included in the cluster paging timing with index i_s is D(i_s+1), and starting from the first PDCCH listening timing, this cluster paging timing includes a total of S*Xb consecutive PDCCH listening timings.

[0109] If the cluster paging configuration information of the PCCH does not provide a list of starting positions for cluster paging opportunities, the index of the first PDCCH listening opportunity included in the cluster paging opportunity with index i_s is S*Xb*i_s. Starting from the first PDCCH listening opportunity, the cluster paging opportunity includes a total of S*Xb consecutive PDCCH listening opportunities.

[0110] The mapping relationship between PDCCH listening time and SSB within the paging time of this cluster is as follows: the x*S+Kth PDCCH listening time corresponds to the Kth SSB, x=0,1,……,Xb-1, K=1,……,S.

[0111] Step 204: For a UE in RRC connected state, if the UE's active DL BWP contains a paging search space, the UE determines its own paging timing based on the configuration information of the DL BWP.

[0112] In this embodiment, for a UE in RRC connected state, if the UE's active DL BWP contains a paging search space, the UE determines its own paging timing based on the configuration information of the DL BWP.

[0113] When the UE is a regular UE that does not support MBS functionality, the UE determines its paging timing based on the existing PCCH configuration information in the DL BWP configuration information. The method by which the UE determines its paging timing is described in Chapter 7 of the 3GPP TS38.304 protocol and will not be repeated here.

[0114] When the UE supports MBS functionality, if the configuration information of the DL BWP does not contain PCCH cluster paging configuration information, the UE determines its own paging timing based on the existing PCCH configuration information in the DL BWP configuration information. The method for the UE to determine its own paging timing is described in Chapter 7 of the 3GPP TS38.304 protocol and will not be repeated here. If the configuration information of the DL BWP contains PCCH cluster paging configuration information, the UE determines its own paging timing based on the PCCH cluster paging configuration information. Specifically, the method for the UE to determine its own paging timing based on the PCCH cluster paging configuration information is described in steps S1-S3 of step S203 and will not be repeated here.

[0115] Step 205: For any group call / single call, the gNB determines each UE that receives the group call / single call. For each UE, the gNB sends the group call / single call via PCCH at the UE's most recent available paging opportunity. The PCCH provides a group call / single call list, which provides configuration information for the group call / single call.

[0116] Cluster paging includes: cluster group calls and cluster individual calls.

[0117] For any group call, the gNB determines each UE receiving the group call and the number of times the group call will be retransmitted, L1 (1 <= L1 <= Xb). For each UE receiving the group call, the gNB determines the location of S*Xb consecutive PDCCH listening opportunities within the UE's most recent available paging opportunities. The gNB selects S*L1 consecutive PDCCH listening opportunities from the determined S*Xb consecutive PDCCH listening opportunities and transmits the group call to the UE via PCCH within these PDCCH listening opportunities. A group call list is provided on the PCCH transmitted by the gNB within each selected PDCCH listening opportunity, and the group call list contains the configuration information of the group call.

[0118] For any single call, the gNB determines the UE receiving the call and the number of times the call will be retransmitted L2 (1 <= L2 <= Xb). For the UE receiving the call, the gNB determines the location of the S*Xb consecutive PDCCH listening opportunities included in the UE's most recent available paging opportunities. The gNB selects S*L2 consecutive PDCCH listening opportunities from the determined S*Xb consecutive PDCCH listening opportunities and transmits the single call to the UE via PCCH within these PDCCH listening opportunities. A single call list is provided on the PCCH transmitted by the gNB within each selected PDCCH listening opportunity, and the single call list contains the configuration information of the single call.

[0119] For a group call, when multiple UEs receiving the group call have the same paging timing, the gNB selects S*L1 consecutive PDCCH listening opportunities from the nearest available paging opportunities for these UEs, and sends the group call to these UEs via PCCH during these PDCCH listening opportunities. Within each selected PDCCH listening opportunity, the gNB provides a group call list on the PCCH it sends, containing the configuration information for that group call.

[0120] Preferably, the gNB sends the first PDCCH listening time for the group call / single call corresponding to the first SSB.

[0121] To ensure that the UE receiving the group call / single call receives the configuration information of the group call / single call sent by the gNB via the PCCH, the gNB can also send the configuration information of the group call / single call via the PCCH during the UE's paging opportunities in multiple consecutive paging cycles. Specifically, the gNB selects M1 / M2 consecutive paging cycles starting from the UE's most recent available paging cycle, and within each paging cycle, selects S*L1 / S*L2 consecutive PDCCH listening opportunities during the UE's paging opportunities, and sends the group call / single call via the PCCH during these PDCCH listening opportunities. A group call / single call list is provided on the PCCH sent by the gNB during each selected PDCCH listening opportunity, and the group call / single call list contains the configuration information of the group call / single call.

[0122] In order to send group calls, the gNB needs to configure at least one Common Frequency Resource (CFR) for the NR cell. Each CFR consists of several consecutive Common Resource Blocks (CRBs) in the bandwidth of the NR cell's carrier frequency, and is used for the control channel and traffic channel for sending group calls. The method by which the gNB configures the CFR for the NR cell is not the subject of this application and will not be described further.

[0123] The configuration information for a group call consists of one set of common configuration information and N sets of dedicated configuration information, where N is the number of Common Frequency Resources (CFRs) used to transmit the group call: the group call can be transmitted in parallel on N CFRs. The nth set of dedicated configuration information includes: the configuration information for the nth CFR used to transmit the group call, the configuration information for the control channel of the group call on the nth CFR, the configuration information for the traffic channel of the group call, the configuration information for the PDSCH of the group call, the configuration information for the semi-static PDSCH resources of the group call, and the configuration information for the measurement gap of the group call.

[0124] A set of common configuration information includes:

[0125] (a) TMGI: Used to identify group calls;

[0126] (ii) G-RNTI: If dynamic scheduling is used during the transmission of group calls, a G-RNTI is configured for the group call to identify the group call in the air interface;

[0127] (iii) G-CS-RNTI: If the group call adopts semi-static scheduling during service transmission, a G-CS-RNTI is configured for the group call to identify the group call in the air interface.

[0128] (iv) Call priority;

[0129] (v) Dedicated NAS messages;

[0130] (vi) Short Message Indication (TRUE / FALSE): When the short message indication is TRUE, it means that a multicast short message will be sent;

[0131] (vii) Other necessary information: such as call sequence number.

[0132] The details of each group of dedicated configuration information are as follows. Preferably, the subscripts of the configuration used for the control channel / service channel of the group call are the same in the N groups of dedicated configuration information.

[0133] (a) The subscripts used in the configuration of the group call control channel:

[0134] Each group call is configured with a Trunking Signaling Radio Bearer (TSRB) and a Trunking Control Channel (TCCH). In the NR-based B-TRUNC protocol, at least one set of configuration information is pre-configured for the TCCH, with each set of configuration information assigned an index starting from 0. When the control channel of a group call uses the configuration at index `index`, it means that the TCCH of that group call uses the configuration information at index `index`.

[0135] Each set of TCCH configuration information includes the following:

[0136] (1) PDCP configuration information (optional): Used to configure a PDCP entity for the TSRB of a group call.

[0137] If the PDCP entity uses encryption / integrity protection, the PDCP configuration information includes the configuration information for the encryption algorithm / integrity protection algorithm.

[0138] If PDCP layer-related processing is not performed on the TSRB signaling of a group call, then PDCP configuration information is not included in each group configuration information of the TCCH.

[0139] (2) RLC configuration information: used to configure a UM mode RLC entity for the TSRB of a group call.

[0140] (3) TCCH ID: In the B-TRUNC protocol based on NR technology, a fixed logical channel ID is assigned to the TCCH.

[0141] (ii) The subscript of the configuration used by the group call service channel (optional):

[0142] In the B-TRUNC protocol based on NR technology, one or more sets of configuration information are pre-configured for the service channel of each service type group call, and an index is assigned to each set of configuration information pre-configured for each service type starting from 0.

[0143] When the configuration index used by a group call service channel is index, it means that the service channel of the group call uses a set of configuration information with index index.

[0144] The configuration information for each group call service channel includes the following:

[0145] (1) SDAP configuration information for group calls: used to configure an SDAP entity for a group call. The SDAP entity maps the QoS flow of the group call to one or more Trunking Data Radio Bearers (TDRBs).

[0146] (2) PDCP configuration information for each TDRB in a group call: used to configure a PDCP entity for each TDRB.

[0147] (3) RLC configuration information for each TDRB in a group call: used to configure a UM-mode RLC entity for each TDRB.

[0148] (4) Service channel configuration information for group calls: Configure a trunking traffic channel (TTCH) for each TDRB of the group call. The service channel configuration information for the group call consists of the ID of the TTCH configured for each TDRB of the group call. Different TTCHs have different IDs.

[0149] (III) Configuration information of the Common Frequency Resource (CFR) used in group calls:

[0150] CFR configuration information includes:

[0151] (1) The type of cyclic prefix (CP) used in CFR and the subcarrier spacing (SCS) used in CFR.

[0152] (2) The position of the starting CRB of CFR and the number of consecutive CRBs occupied by CFR

[0153] (3) CORESET configuration information

[0154] (4) Search space configuration information

[0155] (5) PDSCH configuration information

[0156] Among them, the CORESET configuration information is used to configure CORESET for TCCH and TTCH on CFR, the search space configuration information is used to configure search space for TCCH and TTCH on CFR, and the PDSCH configuration information is used to send PDSCH dedicated to each group call on CFR.

[0157] (iv) Configuration information of PDSCH used in group calls: used to send PDSCH dedicated to group calls.

[0158] When the dedicated configuration information includes "configuration information for the PDSCH used in group calls", the PDSCH configuration information is used when sending the dedicated PDSCH for group calls; otherwise, the "PDSCH configuration information" included in "configuration information for the CFR used in group calls" is used when sending the dedicated PDSCH for group calls.

[0159] (v) Configuration information of semi-static PDSCH resources used in group calls: used to configure several semi-static PDSCH resources for group calls on CFR.

[0160] When G-CS-RNTI is provided in the above set of public configuration information, "configuration information of semi-static PDSCH resources used for group calls" is provided in each set of dedicated configuration information.

[0161] (vi) Configuration information of the measurement GAP used for group calls: used to configure the measurement GAP for group calls.

[0162] A single call configuration includes:

[0163] 1. UE ID: Used to identify the called UE;

[0164] 2. Call priority.

[0165] Step 206: For the UE receiving the group call / single call, the UE listens to the PDCCH scrambled with P-RNTI by CRC during its own paging time. When the UE listens to the corresponding PDCCH, the UE receives the corresponding PDSCH and obtains the information on the PCCH from the corresponding PDSCH. The UE receives the group call / single call according to the configuration information of the group call / single call in the group call / single call list in the information on the PCCH. After listening to the corresponding PDCCH, the UE also needs to continue listening to the remaining PDCCH listening time.

[0166] For a UE receiving the group call / single call, when the UE is in RRC idle state / RRC inactive state, the UE listens to the PDCCH scrambled with P-RNTI for CRC during its own paging time; when the UE is in RRC connected state, and when the UE's active DL BWP contains the paging search space, the UE listens to the PDCCH scrambled with P-RNTI for CRC during its own paging time.

[0167] For a UE receiving the group call / single call, when the UE listens to the corresponding PDCCH, the UE receives the corresponding PDSCH and obtains the information on the PCCH from the corresponding PDSCH.

[0168] When the UE determines to receive the group call based on the group call list in the PCCH information, the UE receives the group call according to the configuration information of the group call in the group call list in the PCCH information.

[0169] Specifically, when the group call configuration information includes N sets of dedicated configuration information, it indicates that the group call is transmitted in parallel through N CFRs simultaneously. The UE selects one set of dedicated configuration information from the N sets based on its own state. It then determines the CFR for receiving the group call based on the configuration information of the CFRs used in that set of dedicated configuration information. The UE receives the group call on that CFR based on other configuration information in that set of dedicated configuration information and a set of common configuration information in the group call's configuration information. The process by which the UE selects one set of dedicated configuration information from the N sets of dedicated configuration information is not the subject of this application and will not be elaborated further.

[0170] When the UE determines to receive the single call based on the single call list in the PCCH information, if the UE is in the RRC idle state, the UE initiates the RRC connection establishment process; if the UE is in the RRC inactive state, the UE initiates the RRC connection recovery process. After the UE enters the RRC connected state, the UE receives the single call according to the dedicated signaling sent by the gNB.

[0171] After listening to the corresponding PDCCH, the UE needs to continue listening for the remaining PDCCH listening opportunities.

[0172] Furthermore, the method in Embodiment 1 above also includes:

[0173] For a UE that receives the group call / single call, the UE continues to listen to the PDCCH scrambled with P-RNTI by CRC during its own paging time.

[0174] In the method for sending cluster paging based on UE paging timing provided in Embodiment 1, the gNB configures cluster paging related parameters for the PCCH and determines the cluster paging configuration information of the PCCH, broadcasting the cluster paging configuration information so that UEs in different RRC states can determine their own paging timing based on the cluster paging configuration information. Thus, the gNB can send cluster paging to a UE based on its paging timing, thereby solving the problem of sending cluster paging within an NR cell.

[0175] Example 2:

[0176] Figure 3 This is a flowchart illustrating the method for sending cluster paging during UE paging timing provided in Embodiment 2 of this application. Based on Embodiment 1, as follows... Figure 3 As shown, the method also includes:

[0177] Step 301: For the group call / single call, when the group call / single call temporarily interrupts service transmission, the gNB sends a deactivation notification through the control channel of the group call / single call. The deactivation notification carries a UE status indication, which is either RRC idle state or RRC inactive state. The deactivation notification also carries the cluster paging cycle and DRX configuration information.

[0178] In this step, when the UE state is indicated as RRC idle / RRC inactive, it means that the gNB allows the UE to enter the RRC idle / RRC inactive state.

[0179] In this step, when the deactivation notification carries a cluster paging cycle, it means that the gNB instructs the UE to re-determine its paging timing according to the cluster paging cycle carried in the deactivation notification. The method for the UE to determine its paging timing is described in S203 and S204 of Embodiment 1.

[0180] In this step, when the deactivation notification carries DRX configuration information, it means that the gNB reconfigures DRX parameters for the UE receiving the group call / single call.

[0181] Step 302: For a UE receiving the group call / single call, when the UE receives a deactivation notification sent by the gNB through the control channel of the group call / single call, the UE stops receiving the group call / single call; if the deactivation notification carries a UE status indication, the UE enters the RRC state indicated by the UE status indication from the current RRC state: when the UE status indication is RRC idle state / RRC inactive state, the UE enters the RRC idle state / RRC inactive state; if the deactivation notification carries a cluster paging cycle, the UE re-determines its own paging timing according to the cluster paging cycle carried in the deactivation notification; if the deactivation notification carries DRX configuration information, the UE reconfigures its own DRX parameters according to the DRX configuration information carried in the deactivation notification.

[0182] Furthermore, the method in Embodiment 2 above also includes:

[0183] For UEs that stop receiving group calls / single calls, the UE continues to listen to the PDCCH scrambled with P-RNTI by CRC during its own paging time.

[0184] In this embodiment, service transmission may be suspended for each group call / individual call. When service transmission is suspended for a group call / individual call, if the UE is unaware of this information, the UE will remain in the state of receiving the group call / individual call, consuming power. Therefore, for this group call / individual call, when service transmission is temporarily interrupted, the gNB sends a deactivation notification through the control channel of the group call / individual call so that the UE can stop receiving the group call / individual call according to the deactivation notification, saving power. Optionally, the gNB carries a UE status indication in the deactivation notification so that the UE can enter the RRC idle state or RRC inactive state according to the UE status indication, further saving UE power. Optionally, the gNB carries a larger cluster paging period in the deactivation notification to reduce the frequency of UE paging opportunities, further saving UE power. Optionally, the gNB carries DRX configuration information in the deactivation notification to reconfigure the UE's DRX parameters, further saving UE power.

[0185] Furthermore, based on the above embodiments, the method of sending cluster paging during UE paging further includes:

[0186] During the process of the UE listening to the PDCCH scrambled with P-RNTI using CRC, when the UE listens to the corresponding PDCCH, the UE receives the corresponding PDSCH and obtains the information on the PCCH from the corresponding PDSCH. The UE receives new group calls / individual calls according to the group call / individual call list in the information on the PCCH.

[0187] Example 3:

[0188] Figure 4 This is a flowchart illustrating the method for sending cluster paging during UE paging timing provided in Embodiment 3 of this application. Based on any of the above embodiments, such as... Figure 4 As shown, the method of sending cluster paging during UE paging also includes:

[0189] Step 401: When the group call / single call resumes service transmission, the gNB determines each UE that received the group call / single call. For each UE, the gNB sends the group call / single call through the PCCH at the UE's most recent available paging opportunity. The PCCH provides a group call / single call list, which provides the configuration information of the group call / single call.

[0190] Step 402: For the UE receiving the group call / single call, the UE listens to the PDCCH scrambled with P-RNTI by CRC during its own paging time. When the UE listens to the corresponding PDCCH, the UE receives the corresponding PDSCH and obtains the information on the PCCH from the corresponding PDSCH. The UE receives the group call / single call according to the configuration information of the group call / single call in the group call / single call list in the information on the PCCH. After listening to the corresponding PDCCH, the UE also needs to continue listening to the remaining PDCCH listening time.

[0191] In this embodiment, for each group call / single call, when the group call / single call resumes service transmission, the gNB can also send the configuration information of the group call / single call to the corresponding UE through the PCCH within the corresponding UE paging time, so that the corresponding UE can continue to receive the group call / single call according to the configuration information of the group call / single call on the PCCH, thus ensuring the continued transmission of the group call / single call.

[0192] Example 4:

[0193] Figure 5 This is a schematic diagram of the structure of the gNB, a device that sends cluster paging during UE paging, as provided in Embodiment 4 of this application. Figure 5 As shown, the gNB includes: a configuration module 51, a broadcast module 52, and a transmission module 53.

[0194] Configuration module 51 is used to: configure cluster paging related parameters for PCCH and determine the cluster paging configuration information of PCCH;

[0195] The broadcast module 52 is configured to: broadcast the cluster paging configuration information of the PCCH through SIB1 when the cluster paging configuration information of the PCCH is different from the existing PCCH configuration information in SIB1; and for each dedicated DL BWP containing a paging search space, when the cluster paging configuration information of the PCCH is different from the existing PCCH configuration information in the configuration information of the BWP, carry the cluster paging configuration information of the PCCH in the configuration information of the BWP.

[0196] The sending module 53 is configured to: for any group call / single call, determine each UE receiving the group call / single call, and for each UE, send the group call / single call via PCCH at the nearest available paging opportunity for the UE, wherein a group call / single call list is provided on the PCCH, and the group call / single call list provides configuration information for the group call / single call;

[0197] Furthermore, the gNB also includes: a service interruption notification module 54, used to: for a group call / single call, when the service transmission of the group call / single call is temporarily interrupted, send a deactivation notification through the control channel of the group call / single call, wherein the deactivation notification carries a UE status indication, the UE status indication is RRC idle state or RRC inactive state, the deactivation notification carries a cluster paging period, and the deactivation notification carries DRX configuration information;

[0198] Furthermore, the gNB also includes: a service recovery notification module 55, configured to: determine each UE receiving the group call / single call when a group call / single call resumes service transmission, and for each UE, send the group call / single call via PCCH at the most recent available paging opportunity for the UE, wherein a group call / single call list is provided on the PCCH, and the group call / single call list provides configuration information for the group call / single call.

[0199] Example 5:

[0200] Figure 6 This is a schematic diagram of the structure of a device UE that receives cluster paging during UE paging, as provided in Embodiment 5 of this application. Figure 6 As shown, the UE includes: a determining module 61 and a receiving module 62.

[0201] The determining module 61 is used to: when the UE is in the RRC idle state / RRC inactive state, receive SIB1 and determine the paging timing according to the information on the SIB1; when the UE is in the RRC connected state, if the UE's active DL BWP contains a paging search space, determine the paging timing according to the configuration information of the DL BWP.

[0202] The receiving module 62 is configured to: listen to the PDCCH scrambled with P-RNTI using CRC during the paging time; when the corresponding PDCCH is heard, receive the corresponding PDSCH and obtain the information on the PCCH from the corresponding PDSCH; determine the group call / single call to be received according to the group call / single call list in the information on the PCCH, and receive the group call / single call according to the configuration information of the determined group call / single call; after listening to the corresponding PDCCH, the UE also needs to continue listening to the remaining PDCCH listening time.

[0203] Furthermore, the receiving module 62 is also configured to: for a UE receiving the group call / single call, the UE continues to listen to the PDCCH scrambled with P-RNTI by CRC during its own paging time;

[0204] Furthermore, the UE also includes: a service interruption processing module 63, configured to: stop receiving the group call / single call when receiving a deactivation notification sent by the gNB through the group call / single call control channel; if the deactivation notification carries a UE status indication, enter the RRC state indicated by the UE status indication from the current RRC state: when the UE status indication is RRC idle state / RRC inactive state, enter the RRC idle state / RRC inactive state; if the deactivation notification carries a cluster paging cycle, re-determine its own paging timing according to the cluster paging cycle carried in the deactivation notification; if the deactivation notification carries DRX configuration information, reconfigure the DRX parameters according to the DRX configuration information carried in the deactivation notification.

[0205] Furthermore, the receiving module 62 is also configured to: after stopping receiving the group call / single call, continue to listen to the PDCCH scrambled with P-RNTI by CRC during the paging time;

[0206] Furthermore, the receiving module 62 is also configured to: during the process of listening to the PDCCH scrambled with P-RNTI for CRC, when the corresponding PDCCH is detected, the UE receives the corresponding PDSCH and obtains the information on the PCCH from the corresponding PDSCH; when the group call / single call list in the information on the PCCH provides new group call / single call configuration information, the UE can receive the new group call / single call; when the group call / single call list in the information on the PCCH provides configuration information of a previously interrupted group call / single call, the UE can continue to receive the group call / single call.

[0207] The device provided in this embodiment can be used to execute the technical solutions of the above method embodiments. Its implementation principle and technical effect are similar, and will not be described again here.

[0208] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A method for sending cluster paging based on UE paging timing, characterized in that, include: The gNB configures the cluster paging related parameters for the PCCH and determines the cluster paging configuration information for the PCCH. When the cluster paging configuration information of the PCCH is different from the existing PCCH configuration information in SIB1, the gNB broadcasts the cluster paging configuration information of the PCCH through SIB1; for each dedicated DL BWP containing a paging search space, when the cluster paging configuration information of the PCCH is different from the existing PCCH configuration information in the configuration information of the BWP, the gNB carries the cluster paging configuration information of the PCCH in the configuration information of the BWP. For a UE in the RRC idle state / RRC inactive state, the UE receives SIB1 and determines its own paging timing based on the information on SIB1; For a UE in RRC connected state, if the UE's active DL BWP contains a paging search space, the UE determines its own paging timing based on the configuration information of the DL BWP. For any group call / single call, the gNB determines each UE that receives the group call / single call. For each UE, the gNB sends the group call / single call via PCCH at the UE's nearest available paging opportunity. A group call / single call list is provided on the PCCH, and the group call / single call list provides the configuration information of the group call / single call. For a UE receiving a group call / single call, the UE listens to the PDCCH scrambled with P-RNTI by CRC during its own paging time. When the UE listens to the corresponding PDCCH, the UE receives the corresponding PDSCH and obtains the information on the PCCH from the corresponding PDSCH. The UE receives the group call / single call according to the configuration information of the group call / single call in the group call / single call list in the information on the PCCH. After listening to the corresponding PDCCH, the UE also needs to continue listening to the remaining PDCCH listening time.

2. The method according to claim 1, characterized in that, The cluster paging configuration information of the PCCH includes: The cluster paging period Tb, the number of cluster paging frames Nb in each cluster paging period, the radio frame offset PF_offset_b used to determine the cluster paging frame, the number of cluster paging opportunities configured for each cluster paging frame Nsb, the number of PDCCH listening opportunities included in each cluster paging opportunity in each beam direction Xb, and the list of starting positions of cluster paging opportunities, which consists of the index of the first PDCCH listening opportunity in each of the Nsb cluster paging opportunities.

3. The method according to claim 1, characterized in that, When the paging search space is 0, the method for determining the paging timing of each cluster paging frame based on the cluster paging configuration information of the PCCH includes: The number of cluster paging opportunities, Nsb, configured for each cluster paging frame is 1 or 2; When Nsb=1, a cluster paging timing is configured for each cluster paging frame. All PDCCH listening timings from the first PDCCH listening timing contained in the cluster paging frame to the most recent cluster paging frame or before the most recent paging frame belong to the cluster paging timing. When Nsb=2, each cluster paging frame is configured with 2 cluster paging opportunities. The first cluster paging opportunity consists of the PDCCH listening opportunity contained in the first half-frame of the paging frame, and the second cluster paging opportunity consists of the PDCCH listening opportunity contained in the second half-frame of the paging frame.

4. The method according to claim 1, characterized in that, When the paging search space is not 0, the method for determining the paging timing of each cluster paging frame based on the cluster paging configuration information of the PCCH includes: Starting from the first PDCCH listening opportunity contained in the cluster paging frame, each PDCCH listening opportunity is assigned an index in chronological order, with the starting index being 0. The Nsb cluster paging opportunities configured for each cluster paging frame are determined according to method 1 or method 2: Method 1: The timing of cluster paging at index i is determined by The cluster paging event consists of a series of consecutive PDCCH listening opportunities. The index of the first PDCCH listening opportunity is: , i=0, ..., Nsb-1; Method 2: Specify the index of the first PDCCH listening time for each of the Nsb cluster paging times. Each cluster paging time is determined by... It consists of a series of consecutive PDCCH listening opportunities; Included in each cluster paging time In the PDCCH listening time, the first Each PDCCH listening opportunity corresponds to the Kth synchronization signal / physical broadcast channel block SSB, x=0,1,……,Xb-1, K=1,……,S, where S is the number of SSB blocks in the NR cell.

5. The method according to claim 1, characterized in that, For a UE in RRC idle / RRC inactive state, if the information on SIB1 contains PCCH cluster paging configuration information, or for a UE in RRC connected state, if the configuration information of the UE's active DL BWP contains PCCH cluster paging configuration information, the UE determines its own paging timing, including: When the UE supports MBS function, the UE determines the frame number (SFN) of the cluster paging frames it needs to listen to in each cluster paging cycle according to the following formula: ； In the Nsb cluster paging opportunities configured for the cluster paging frames that need to be listened to, the UE determines the index of the cluster paging opportunity to be listened to according to the following formula: ； The UE determines the timeframe for listening to cluster paging based on the following method: Location of consecutive PDCCH listening opportunities: When the paging search space is not 0, starting from the first PDCCH listening opportunity contained in the cluster paging frame that needs to be listened to, the UE assigns an index to each PDCCH listening opportunity in chronological order, with the starting index being 0. If the PCCH cluster paging configuration information provides a list of cluster paging timing start positions, let D(I) represent the I-th index among the Nsb indices provided in the list, where I = 1, ..., Nsb; the index of the first PDCCH listening timing included in the cluster paging timing with index i_s is... The total number of paging times for this cluster, starting from the first PDCCH listening time, includes... A continuous PDCCH listening opportunity; If the cluster paging configuration information of the PCCH does not provide a list of cluster paging timing start positions, the index of the first PDCCH listening timing included in the cluster paging timing with index i_s is... The total number of paging times for this cluster, starting from the first PDCCH listening time, includes... A continuous PDCCH listening opportunity; The mapping relationship between the PDCCH listening time and the SSB within the paging time of this cluster is as follows: Each PDCCH listening opportunity corresponds to the Kth SSB. .

6. The method according to claim 1, characterized in that, The gNB sends the group call / single call via PCCH during the UE's most recent available paging opportunity, including: For any given group call, the gNB determines each UE receiving the group call and the number of times the group call should be retransmitted. For each UE receiving this group of calls, the gNB determines the most recent available paging opportunity for that UE. The location of a consecutive PDCCH listening opportunity, from which the gNB determines... Selecting continuous PDCCH listening opportunities During each selected PDCCH listening opportunity, the gNB sends the group call to the UE via PCCH. A group call list is provided on the PCCH sent by the gNB during each selected PDCCH listening opportunity. The group call list contains the configuration information of the group call. For any single call, the gNB determines the UE receiving the call and the number of times the call should be retransmitted. For the UE receiving this single call, the gNB determines the UE's most recent available paging opportunity, including... The location of a consecutive PDCCH listening opportunity, from which the gNB determines... Selecting continuous PDCCH listening opportunities During each selected PDCCH listening opportunity, the gNB sends the single call to the UE via PCCH. A single call list is provided on the PCCH sent by the gNB during each selected PDCCH listening opportunity. The single call list contains the configuration information of the single call. For a group call, when multiple UEs receiving the group call have the same paging timing, the gNB selects a consecutive paging timing from the most recent available paging timings for these UEs. During each selected PDCCH listening opportunity, the group call is sent to these UEs via PCCH. A group call list is provided on the PCCH sent by the gNB within each selected PDCCH listening opportunity, and the group call list contains the configuration information of the group call.

7. The method according to claim 6, characterized in that, The configuration information of the group call consists of a set of common configuration information and N sets of dedicated configuration information, where N is the number of common frequency resources used to send the group call; A set of common configuration information includes: (a) TMGI: Used to identify group calls; (ii) G-RNTI: If dynamic scheduling is used during the transmission of group calls, a G-RNTI is configured for the group call to identify the group call in the air interface; (iii) G-CS-RNTI: If the group call adopts semi-static scheduling during service transmission, a G-CS-RNTI is configured for the group call to identify the group call in the air interface; (iv) Call priority; (v) Dedicated NAS messages; (vi) Short message indication TRUE / FALSE: When the short message indication is TRUE, it means that a multicast short message will be sent; (vii) Other necessary information: call sequence number; The dedicated configuration information includes: the subscript of the configuration used by the control channel of the group call, the subscript of the configuration used by the service channel of the group call, the configuration information of the common frequency resources used by the group call, the configuration information of the PDSCH used by the group call, the configuration information of the semi-static PDSCH resources used by the group call, and the configuration information of the measurement GAP used by the group call. The configuration information for a single call includes the identifier of the called UE and the call priority.

8. The method according to claim 1, characterized in that, The method further includes: For the group call / single call, when the group call / single call temporarily interrupts service transmission, the gNB sends a deactivation notification through the control channel of the group call / single call. The deactivation notification carries a UE status indication, which is either RRC idle state or RRC inactive state. The deactivation notification also carries the cluster paging cycle and DRX configuration information. For a UE receiving the group call / single call, when the UE receives a deactivation notification sent by the gNB through the control channel of the group call / single call, the UE stops receiving the group call / single call; if the deactivation notification carries a UE status indication, the UE enters the RRC state indicated by the UE status indication from the current RRC state: when the UE status indication is RRC idle state / RRC inactive state, the UE enters the RRC idle state / RRC inactive state; if the deactivation notification carries a cluster paging cycle, the UE re-determines its own paging timing according to the cluster paging cycle carried in the deactivation notification; if the deactivation notification carries DRX configuration information, the UE reconfigures its own DRX parameters according to the DRX configuration information carried in the deactivation notification.

9. The method according to claim 1 or 8, characterized in that, The method further includes: For a UE that receives the group call / single call, the UE continues to listen to the PDCCH scrambled with P-RNTI by CRC during its own paging time; For UEs that stop receiving group calls / single calls, the UE continues to listen to the PDCCH scrambled with P-RNTI by CRC during its own paging time.

10. The method according to any one of claims 1-8, characterized in that, The method further includes: During the process of the UE listening to the PDCCH scrambled by P-RNTI with CRC, when the UE listens to the corresponding PDCCH, the UE receives the corresponding PDSCH and obtains the information on the PCCH from the corresponding PDSCH; the UE receives new group calls / individual calls according to the group call / individual call list in the information on the PCCH.

11. The method according to any one of claims 1-8, characterized in that, After the gNB sends the deactivation notification through the group call / single call control channel, it also includes: When the group call / single call resumes service transmission, the gNB determines each UE that received the group call / single call. For each UE, the gNB sends the group call / single call through the PCCH at the UE's nearest available paging opportunity. The PCCH provides a group call / single call list, which provides configuration information for the group call / single call. For a UE receiving a group call / single call, the UE listens to the PDCCH scrambled with P-RNTI by CRC during its own paging time. When the UE listens to the corresponding PDCCH, the UE receives the corresponding PDSCH and obtains the information on the PCCH from the corresponding PDSCH. The UE receives the group call / single call according to the configuration information of the group call / single call in the group call / single call list in the information on the PCCH. After listening to the corresponding PDCCH, the UE also needs to continue listening to the remaining PDCCH listening time.

12. The method according to claim 11, characterized in that, The UE receives the group call / single call according to the configuration information of the group call / single call in the group call / single call list in the information on the PCCH, including: When the UE determines to receive the group call based on the group call list in the PCCH, and when the configuration information of the group call includes N sets of dedicated configuration information, the UE selects one set of dedicated configuration information from the N sets of dedicated configuration information according to its own status, determines the CFR for receiving the group call based on the CFR used by the group call in the dedicated configuration information, and the UE receives the group call on the CFR based on other configuration information in the dedicated configuration information and a set of common configuration information in the configuration information of the group call. When the UE determines to receive the single call based on the single call list in the PCCH information, if the UE is in the RRC idle state, the UE initiates the RRC connection establishment process; if the UE is in the RRC inactive state, the UE initiates the RRC connection recovery process. After the UE enters the RRC connected state, the UE receives the single call according to the dedicated signaling sent by the gNB.

13. A gNB (growth unit) that sends cluster paging during UE paging, for implementing the method of claim 1, characterized in that, The gNB includes: a configuration module, a broadcast module, and a transmission module; The configuration module is used to: configure cluster paging related parameters for PCCH and determine the cluster paging configuration information of PCCH; The broadcast module is used to: broadcast the cluster paging configuration information of the PCCH through SIB1 when the cluster paging configuration information of the PCCH is different from the existing PCCH configuration information in SIB1; and for each dedicated DLBWP containing a paging search space, when the cluster paging configuration information of the PCCH is different from the existing PCCH configuration information in the configuration information of the BWP, carry the cluster paging configuration information of the PCCH in the configuration information of the BWP. The sending module is configured to: for any group call / single call, determine each UE receiving the group call / single call, and for each UE, send the group call / single call via PCCH at the nearest available paging opportunity for the UE, wherein a group call / single call list is provided on the PCCH, and the group call / single call list provides configuration information for the group call / single call.

14. A device (UE) that receives cluster paging during UE paging, for implementing the method of claim 1, characterized in that, The UE includes: a determining module and a receiving module; The determination module is used to: when the UE is in the RRC idle state / RRC inactive state, receive SIB1 and determine the paging timing based on the information on the SIB1; when the UE is in the RRC connected state, if the UE's active DL BWP contains a paging search space, determine the paging timing based on the configuration information of the DL BWP. The receiving module is used to: listen to the PDCCH scrambled with P-RNTI using CRC during the paging time; when the corresponding PDCCH is heard, receive the corresponding PDSCH and obtain the information on the PCCH from the corresponding PDSCH; determine the group call / single call to be received according to the group call / single call list in the information on the PCCH, and receive the group call / single call according to the configuration information of the determined group call / single call; after listening to the corresponding PDCCH, the UE also needs to continue listening to the remaining PDCCH listening time.

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