Paging message transmission and reception method, device, and storage medium

Abstract

The present disclosure discloses a method and device for transmitting and receiving a paging message, and a storage medium, in which the AMF includes a step of transmitting a paging message to each base station within a paging area when an MBS service is about to start, depending on whether each base station within the paging area supports a multicast broadcast characteristic.

Description

Cross-Citation of Related Applications

[0001] This disclosure claims priority to Chinese Patent Application No. 202110930512.8, filed in China on August 13, 2021, the entire contents of which are incorporated herein by reference. [Technical Field]

[0002] The present disclosure relates to the field of communications technology, and in particular to a method and device for transmitting and receiving a paging message, and a storage medium. [Background technology]

[0003] For a user equipment (UE) that supports multicast service, when it enters an idle state after joining a multicast and broadcast service (MBS) group through a join process, the network pages the UE based on stored information before the service starts, notifying it of the upcoming session start and placing the UE back in a connected state to receive the service. For nodes that support multicast, the network pages the UE using a group paging method, and for nodes that do not support multicast, the network pages the UE using a normal unicast paging method.

[0004] A drawback of the related art is that there is no solution for selecting an appropriate method to page a UE to notify that an MBS service is about to start. Summary of the Invention [Problem to be solved by the invention]

[0005] The present disclosure provides a method and device for transmitting and receiving a paging message, and a storage medium, thereby solving the problem of there being no solution for selecting an appropriate scheme to page a UE to inform it that an MBS service is about to start. [Means for solving the problem]

[0006] The present disclosure provides the following technical solutions:

[0007] A method for transmitting a paging message, wherein the AMF includes, when an MBS service is about to start, transmitting a paging message to each base station within a paging area according to a situation in which each base station within the paging area supports a multicast broadcast characteristic.

[0008] During implementation, the AMF determines whether the base station supports multicast broadcast characteristics when establishing an NG interface between the base station and the AMF.

[0009] During implementation, the AMF determines the paging area by at least one or a combination of the following: the AMF determines the group paging area and the unicast paging area based on the TA list and group member information of the multicast service; the AMF determines the group paging area and the unicast paging area based on the TA configuration method.

[0010] In implementation, the TA configuration manner includes one of the following: all base stations in the TA support MBS, or none of them support MBS, or a base station that supports MBS and a base station that does not support MBS are in the same TA.

[0011] In practice, the paging message is transmitted to the UE via a base station by a unicast paging message or a multicast dedicated group paging message.

[0012] During implementation, according to the situation where each base station in the paging area supports the multicast broadcast feature, the step of sending paging messages to each base station includes: if there is a base station in the paging area that supports the multicast broadcast feature, sending a set of group paging messages including MBS service information that the session start is about to start and a set of paging messages including UE ID information, or a set of paging messages including MBS service information that the session start is about to start and UE ID information corresponding to the MBS service, or sending a group paging message including MBS service information that the session start is about to start.

[0013] In implementation, the MBS service information includes one or a combination of the following: an MBS session ID, a TMGI, and a multicast IP address.

[0014] A method for transmitting a paging message, comprising: a base station receiving a paging message transmitted from an AMF; and, after the base station reads information in the paging message, paging a UE according to a situation in which the base station supports multicast broadcast characteristics.

[0015] During implementation, the step of the base station reading information in the paging message according to a situation in which the base station supports the multicast broadcast feature includes: when receiving a set of group paging messages including MBS service information to be started by session start and a set of paging messages including UE ID information, a base station supporting the multicast broadcast feature selects the group paging messages and transmits paging messages including the MBS service information at all paging times PO; or a base station not supporting the multicast broadcast feature selects the paging messages and transmits paging messages including only the UE ID information at the PO corresponding to the UE ID; when receiving a set of paging messages including MBS service information to be started by session start and UE ID information corresponding to the service, a base station supporting the multicast broadcast feature transmits, based on the UE ID information, a paging message including the MBS service information or a paging message including the MBS service information and carrying the UE ID information at the PO corresponding to the UE ID information; or a base station not supporting the multicast broadcast feature transmits, based on the UE ID information, a paging message including only the UE ID information at the PO corresponding to the UE ID information; or When the base station that supports the multicast broadcast feature receives a group paging message including the MBS service information that the MBS service start is about to start, the base station that supports the multicast broadcast feature sends a paging message including the MBS service information in all POs, or sends a paging message including the MBS service information or a paging message including the MBS service information and carrying UE ID information only in POs corresponding to the members based on group member information obtained from the core network; or, after the base station that does not support the multicast broadcast feature requests the corresponding UE ID information from the AMF, the UEand transmitting a paging message including the UE_ID only in the PO corresponding to the ID.

[0016] During implementation, the method further includes a step of the base station setting the MBS-dedicated DRX cycle through a system message.

[0017] In practice, the paging message is transmitted to the UE via a base station by a unicast paging message or a multicast dedicated group paging message.

[0018] In implementation, the PO for transmitting the group paging message further includes a PO obtained based on the UE ID when transmitting through a unicast paging message, or a PO obtained based on MBS service information when transmitting through an MBS-dedicated group paging message.

[0019] During implementation, the method further includes the step of indicating, for the group paging message transmitted through the unicast message, whether it includes MBS group paging information or whether it is of a type that includes MBS group paging information, using a short message.

[0020] During implementation, the method further includes a step in which the base station sets, by a system message, a specific radio frame and subframe position for receiving the group paging message within the MBS-dedicated DRX period, or a step in which the base station distributes, for multicast services with the same set of MBS-dedicated DRX period settings, the time domain positions where the MBS service subscribed or interested user group needs to monitor paging to different POs or PFs based on the service identifier information of the MBS services.

[0021] During implementation, the method further includes scrambling the group paging message by the G-RNTI or the GP-RNTI, or scrambling the group paging message and the unicast paging message by the P-RNTI.

[0022] During implementation, when the multicast-only group paging message and the unicast paging message are scrambled by the P-RNTI, the method further includes the steps of setting a G-PO or a unicast paging PO reception offset, and adding the group paging message to the unicast paging message.

[0023] During implementation, when the G-PO or unicast paging PO reception offset is configured, it is configured through one or a combination of a system message, an RRC dedicated signaling, or both.

[0024] A paging message receiving method includes the steps of: a UE receiving a paging message sent from a base station; and the UE receiving an MBS service after reading information in the paging message according to a situation in which the UE supports multicast broadcast characteristics.

[0025] During implementation, the method further includes a step in which the UE receives an RNTI used for the MBS group paging message, which is assigned by the base station during registration or joining.

[0026] During implementation, when the UE is released to a disconnected state after joining, the method further includes reserving one or a combination of the mapping relationship between different MBS services and G-RNTI, GP-RNTI, and MBS text.

[0027] During implementation, if the UE supports MBS, the method further includes reading the UE ID list and MBS service information after receiving a paging message in a PO corresponding to the MBS.

[0028] During implementation, the method further includes determining, according to the indication of the short message mode, whether the paging message includes MBS group paging information or is only a paging message.

[0029] During implementation, the method further includes the step of descrambling the group paging message using the G-RNTI or the GP-RNTI, or the step of descrambling the group paging message and the unicast paging message using the P-RNTI.

[0030] During implementation, when descrambling the group paging message and the unicast paging message according to the P-RNTI, the method further includes the steps of receiving a G-PO or unicast PO receiving offset set by the base station, receiving a unicast paging message with the group paging message added, and receiving a UE energy saving mode set by the base station.

[0031] During implementation, when the base station receives the configured G-PO or unicast paging PO reception offset, it sets it through one of a system message, an RRC dedicated signaling, or a combination thereof.

[0032] During implementation, when a unicast paging message with a group paging message added is received, if the UE supports MBS service, the method further includes the step of reading an IE including an MBS service identifier to determine whether there is an MBS service that the UE is interested in / subscribed to, and reading and checking an IE including UE ID information in the paging message; or if the UE does not support MBS service, reading and checking an IE including UE ID information in the message to determine whether a paging message sent from the network has been received.

[0033] During implementation, when the base station receives the UE energy saving mode set, if the base station does not receive the message broadcast by the base station indicating whether the UE supports MBS service, the method further includes the step of waking up only at the PO or PF of the unicast paging to receive the unicast paging.

[0034] During implementation, the method further includes the steps of receiving a specific radio frame and subframe position for receiving a multicast-dedicated group paging message within an MBS-dedicated DRX period set by the base station through a system message, or receiving the same set of MBS-dedicated DRX periods set by the base station for multiple multicast services, and the UE waking up to the PO or PF corresponding to the subscribed MBS service to listen to the group paging message, thereby confirming whether the MBS service is about to start.

[0035] The AMF includes a processor for reading a program in a memory and executing a process of transmitting a paging message to each base station in a paging area when an MBS service is about to start, depending on whether each base station in the paging area supports multicast broadcast characteristics, and a transceiver for transmitting and receiving data under the control of the processor.

[0036] During implementation, when establishing an NG interface between the base station and the AMF, it is determined whether the base station supports the multicast broadcast feature.

[0037] During implementation, the paging area is determined by one or a combination of determining the paging area based on the TA list and group member information of the multicast service, determining the paging area based on the TA configuration method, and so on.

[0038] In implementation, the TA configuration manner includes one of the following: all base stations in the TA support MBS, or none of them support MBS, or a base station that supports MBS and a base station that does not support MBS are in the same TA.

[0039] In practice, the paging message is transmitted to the UE via a base station by a unicast paging message or a multicast dedicated group paging message.

[0040] During implementation, according to the situation where each base station in the paging area supports the multicast broadcast feature, the step of sending paging messages to each base station includes: if there is a base station in the paging area that supports the multicast broadcast feature, sending a set of group paging messages including MBS service information that the session start is about to start and a set of paging messages including UE ID information, or a set of paging messages including MBS service information that the session start is about to start and UE ID information corresponding to the MBS service, or sending a group paging message including MBS service information that the session start is about to start.

[0041] In implementation, the MBS service information includes one or a combination of the following: an MBS session ID, a TMGI, and a multicast IP address.

[0042] The AMF includes an AMF paging module for transmitting a paging message to each base station in a paging area when an MBS service is about to start, depending on whether each base station in the paging area supports multicast broadcast characteristics.

[0043] During implementation, the AMF determination module is further used to determine whether the base station supports multicast broadcast characteristics when establishing an NG interface between the base station and the AMF.

[0044] During implementation, the AMF paging module further determines the paging area by at least one or a combination of the following: the AMF determines the group paging area and the unicast paging area based on the TA list and the group member information of the multicast service; the AMF determines the group paging area and the unicast paging area based on the TA configuration method.

[0045] During implementation, the AMF paging module is further used such that the configuration manner of the TA includes one of the following: all base stations in the TA support MBS, or none of them support MBS, or a base station that supports MBS and a base station that does not support MBS are in the same TA.

[0046] In practice, the AMF paging module is further used when the paging message is sent by the base station to the UE through a unicast paging message or a multicast dedicated group paging message.

[0047] During implementation, the AMF paging module is further used in such a way that, according to a situation where each base station in the paging area supports the multicast broadcast characteristic, the step of sending a paging message to each base station includes, if there is a base station in the paging area that supports the multicast broadcast characteristic, sending a set of group paging messages including MBS service information that the session start is to start and a set of paging messages including UE ID information, or a set of paging messages including MBS service information that the session start is to start and UE ID information corresponding to the MBS service, or sending a group paging message including MBS service information that the session start is to start.

[0048] In implementation, the AMF paging module is further used to send MBS service information including one or a combination of an MBS session ID, a TMGI, and a multicast IP address.

[0049] A base station including: a processor for reading a program in a memory to receive a paging message sent from an AMF, read information in the paging message, and then execute a process of paging a UE according to a situation in which the base station supports multicast broadcast characteristics; and a transceiver for transmitting and receiving data under the control of the processor.

[0050] During implementation, according to a situation where the base station supports the multicast broadcast feature, the step of reading information in the paging message includes: when a set of group paging messages including MBS service information to be started by session start and a set of paging messages including UE ID information are received, a base station supporting the multicast broadcast feature selects the group paging messages and transmits paging messages including the MBS service information at all paging times PO; or a base station not supporting the multicast broadcast feature selects the paging messages and transmits paging messages including only the UE ID information at the PO corresponding to the UE ID; when a set of paging messages including MBS service information to be started by session start and UE ID information corresponding to the service are received, a base station supporting the multicast broadcast feature transmits, based on the UE ID information, a paging message including the MBS service information or a paging message including the MBS service information and carrying the UE ID information at the PO corresponding to the UE ID information; or a base station not supporting the multicast broadcast feature transmits, based on the UE ID information, a paging message including only the UE ID information at the PO corresponding to the UE ID information; or When the base station that supports the multicast broadcast feature receives a group paging message including the MBS service information that the MBS service start is about to start, the base station that supports the multicast broadcast feature sends a paging message including the MBS service information in all POs, or sends a paging message including the MBS service information or a paging message including the MBS service information and carrying UE ID information only in POs corresponding to the members based on group member information obtained from the core network; or, after the base station that does not support the multicast broadcast feature requests the corresponding UE ID information from the AMF, the UEand transmitting a paging message including the UE_ID only in the PO corresponding to the ID.

[0051] During implementation, the MBS-only DRX period is set by a system message.

[0052] In practice, the paging message is transmitted to the UE via a base station by a unicast paging message or a multicast dedicated group paging message.

[0053] In implementation, the PO for transmitting the group paging message further includes a PO obtained based on the UE ID when transmitting through a unicast paging message, or a PO obtained based on MBS service information when transmitting through an MBS-dedicated group paging message.

[0054] During implementation, the method further includes the step of indicating, for the group paging message transmitted through the unicast message, whether it includes MBS group paging information or whether it is of a type that includes MBS group paging information, using a short message.

[0055] During implementation, the method further includes a step of setting, by a system message, specific radio frame and subframe positions for receiving group paging messages within an MBS-dedicated DRX period, or for multicast services with the same set of MBS-dedicated DRX period settings, distributing the time domain positions where MBS service subscribed or interested user groups need to monitor paging to different POs or PFs based on service identifier information of the MBS services.

[0056] During implementation, the method further includes scrambling the group paging message by the G-RNTI or the GP-RNTI, or scrambling the group paging message and the unicast paging message by the P-RNTI.

[0057] During implementation, if the multicast-only group paging message and the unicast paging message are scrambled by the P-RNTI, setting a G-PO or a unicast paging PO reception offset; The method includes adding a group paging message to a unicast paging message and setting a UE energy saving mode.

[0058] During implementation, when the G-PO or unicast paging PO reception offset is configured, it is configured through one or a combination of a system message, an RRC dedicated signaling, or both.

[0059] A base station includes: a base station receiving module for receiving a paging message sent from an AMF; and a base station paging module for reading information in the paging message and then paging a UE according to a situation in which the base station supports multicast broadcast characteristics.

[0060] In implementation, the base station paging module is further used for:According to a situation where the base station supports the multicast broadcast feature, the step of reading information in the paging message may include: when a set of group paging messages including MBS service information to be started by session start and a set of paging messages including UE ID information are received, a base station supporting the multicast broadcast feature selects the group paging messages and transmits paging messages including the MBS service information at all paging times PO; or a base station not supporting the multicast broadcast feature selects the paging messages and transmits paging messages including only the UE ID information at a PO corresponding to the UE ID; when a set of paging messages including MBS service information to be started by session start and UE ID information corresponding to the service are received, a base station supporting the multicast broadcast feature transmits, based on the UE ID information, a paging message including the MBS service information or a paging message including the MBS service information and carrying the UE ID information at a PO corresponding to the UE ID information; or a base station not supporting the multicast broadcast feature transmits, based on the UE ID information, a paging message including only the UE ID information at a PO corresponding to the UE ID information; or When start receives a group paging message including information on the MBS service to be started, a base station that supports the multicast broadcast feature sends a paging message including the MBS service information in all POs, or sends a paging message including the MBS service information or a paging message including the MBS service information and carrying UE ID information only in POs corresponding to members based on group member information obtained from the core network; or a base station that does not support the multicast broadcast feature requests corresponding UE ID information from the AMF and then sends a paging message including the UE_ID only in POs corresponding to the UE ID.

[0061] In implementation, the base station paging module is further used to set the MBS dedicated DRX period through a system message.

[0062] In practice, the base station paging module further transmits the paging message to the UE by the base station through a unicast paging message or a multicast dedicated group paging message.

[0063] During implementation, the base station paging module further sends a group paging message to the PO, and if sent through a unicast paging message, the PO is a PO obtained based on the UE ID, or if sent through an MBS-dedicated group paging message, the PO is a PO obtained based on MBS service information.

[0064] During implementation, the base station paging module further indicates, for the group paging message sent through the unicast message, whether it includes MBS group paging information or whether it is a type that includes MBS group paging information through a short message.

[0065] During implementation, the base station paging module further sets, by a system message, a specific radio frame and subframe position for receiving group paging messages within an MBS-dedicated DRX cycle, or for multicast services with the same set of MBS-dedicated DRX cycle settings, distributes the time domain positions where MBS service subscribed or interested user groups need to monitor paging to different POs or PFs based on the service identifier information of the MBS services.

[0066] In implementation, the base station paging module further scrambles the group paging message by the G-RNTI or the GP-RNTI, or scrambles the group paging message and the unicast paging message by the P-RNTI.

[0067] During implementation, the base station paging module further sets a G-PO or unicast paging PO receiving offset when scrambling the multicast-only group paging message and the unicast paging message according to the P-RNTI, adds the group paging message to the unicast paging message, and sets the UE energy saving mode.

[0068] In practice, when the base station paging module sets the G-PO or unicast paging PO reception offset, it sets it through one of a system message, an RRC dedicated signaling, or a combination thereof.

[0069] The UE includes a processor for reading a program in a memory to execute a process of receiving a paging message transmitted from a base station, and receiving an MBS service after reading information in the paging message according to a situation where the UE supports multicast broadcast characteristics, and a transceiver for transmitting and receiving data under the control of the processor.

[0070] During implementation, the method further includes receiving an RNTI used for MBS group paging messages, which is assigned by the base station during registration or joining.

[0071] During implementation, when released to a disconnected state after joining, the method further includes reserving one or a combination of the following: a mapping relationship between different MBS services and G-RNTI, a GP-RNTI, and an MBS text.

[0072] In implementation, if MBS is supported, the method further includes the step of reading the UE ID list and MBS service information after receiving a paging message in a PO corresponding to the MBS.

[0073] During implementation, the method further includes determining, according to the indication of the short message mode, whether the paging message includes MBS group paging information or is only a paging message.

[0074] During implementation, the method includes descrambling the group paging message using the G-RNTI or the GP-RNTI, or descrambling the group paging message and the unicast paging message using the P-RNTI.

[0075] During implementation, when descrambling the group paging message and the unicast paging message using the P-RNTI, the method further includes the steps of receiving a G-PO or unicast PO receiving offset set by the base station, receiving a unicast paging message with the group paging message added, and receiving a UE energy saving mode set by the base station.

[0076] During implementation, when the base station receives the configured G-PO or unicast paging PO reception offset, it sets it through one of a system message, an RRC dedicated signaling, or a combination thereof.

[0077] During implementation, when a unicast paging message with a group paging message added is received, if the UE supports MBS service, the method further includes the step of reading an IE including an MBS service identifier to determine whether there is an MBS service that the UE is interested in / subscribed to, and reading and checking an IE including UE ID information in the paging message; or if the UE does not support MBS service, reading and checking an IE including UE ID information in the message to determine whether a paging message sent from the network has been received.

[0078] During implementation, when the base station receives the UE energy saving mode set, if the base station does not receive the message broadcast by the base station indicating whether the UE supports MBS service, the method further includes the step of waking up only at the PO or PF of the unicast paging to receive the unicast paging.

[0079] During implementation, the method further includes the steps of receiving a specific radio frame and subframe position for receiving a multicast-dedicated group paging message within an MBS-dedicated DRX period set by the base station through a system message, or receiving the same set of MBS-dedicated DRX periods set by the base station for multiple multicast services, and the UE waking up to the PO or PF corresponding to the subscribed MBS service to listen to the group paging message, thereby confirming whether the MBS service is about to start.

[0080] The UE includes: a UE paging module for receiving a paging message sent from a base station; and a UE receiving module for receiving an MBS service after reading information in the paging message according to a situation where the UE supports a multicast broadcast characteristic.

[0081] During implementation, the UE receiving module further receives an RNTI used for the MBS group paging message, which is assigned by the base station during registration or joining.

[0082] During implementation, the UE receiving module further reserves one or a combination of the following MBS texts: mapping relationship between different MBS services and G-RNTI, GP-RNTI, when released into a disconnected state after joining.

[0083] During implementation, if the UE supports MBS, the UE receiving module further reads the UE ID list and MBS service information after receiving a paging message in the PO corresponding to the MBS.

[0084] During implementation, the UE receiving module further determines, according to the indication of the short message mode, whether the paging message contains MBS group paging information or is only a paging message.

[0085] During implementation, the UE receiving module further descrambles the group paging message by the G-RNTI or the GP-RNTI, or descrambles the group paging message and the unicast paging message by the P-RNTI.

[0086] During implementation, the UE receiving module further descrambles the group paging message and the unicast paging message according to the P-RNTI, receives the G-PO or unicast paging PO receiving offset set by the base station, receives the unicast paging message with the group paging message added, and receives the UE energy saving mode set by the base station.

[0087] During implementation, the UE receiving module further configures the G-PO or unicast paging PO receiving offset set by the base station through one of a system message, an RRC dedicated signaling, or a combination thereof.

[0088] During implementation, the UE receiving module further reads an IE including an MBS service identifier when receiving a unicast paging message with a group paging message added, if the UE supports MBS service, to determine whether there is an MBS service that the UE is interested in / subscribed to, and reads and checks an IE including UE ID information in the paging message; or if the UE does not support MBS service, reads and checks an IE including UE ID information in the message to determine whether a paging message sent from the network has been received.

[0089] During implementation, when the UE receiving module receives the UE energy saving mode set by the base station, if it does not receive the message broadcast by the base station indicating whether it supports MBS service, it will only wake up at the PO or PF of unicast paging to receive the unicast paging.

[0090] During implementation, the UE receiving module further receives a specific radio frame and subframe position for receiving a multicast dedicated group paging message within the MBS dedicated DRX period set by the base station through a system message, or receives the same set of MBS dedicated DRX periods set by the base station for multiple multicast services, and the UE is woken up by the PO or PF corresponding to its subscribed MBS service to listen to the group paging message, thereby confirming whether the MBS service is about to start.

[0091] A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program that executes the AMF-side paging message transmission method, the base station-side paging message transmission method, or the UE-side paging message reception method. [Effects of the Invention]

[0092] The beneficial effects of the present disclosure are as follows:

[0093] In the technical solution provided by the embodiments of the present disclosure, when an MBS service is about to start, the AMF sends a paging message to each base station within a paging area according to whether each base station within the paging area supports the multicast broadcast feature. The base station can then read the information in the paging message and page the UE according to whether the base station supports the multicast broadcast feature. The UE can then read the information in the paging message according to whether the UE supports the multicast broadcast feature and receive the MBS service. Since the solution is based on whether the multicast broadcast feature is supported, different base stations select appropriate methods to page the UE and notify it that an MBS service is about to start.

[0094] Furthermore, a solution is provided for the problem of AMF sending a paging message to a base station to determine the area of ​​group paging, and the problem of calculating PO or PF in group paging, so that different base stations can select an appropriate method to page the UE and inform it that an MBS service is about to start.

[0095] Furthermore, paging messages are received in a manner that supports multicast broadcast characteristics, reducing the impact on UEs, and achieving the technical effects of reducing excess power consumption on UEs due to group paging and saving energy. [Brief explanation of the drawings]

[0096] The drawings described herein are intended to enhance understanding of the present disclosure and constitute a part of the present disclosure, and the illustrative embodiments of the present disclosure and the description thereof are used to explain the present disclosure and are not intended to unduly limit the present disclosure. [Figure 1] 10 is a schematic flowchart illustrating an implementation of a method for sending a paging message on the AMF side in an embodiment of the present disclosure. [Figure 2] 1 is a schematic flowchart of a base station implementing a paging message sending method in an embodiment of the present disclosure; [Figure 3] 1 is a schematic flowchart illustrating an implementation of a paging message receiving method at a UE side in an embodiment of the present disclosure; [Figure 4] FIG. 1 is a structural schematic diagram of an AMF according to an embodiment of the present disclosure. [Figure 5] FIG. 2 is a structural schematic diagram of a base station in an embodiment of the present disclosure; [Figure 6] 1 is a structural schematic diagram of a UE in an embodiment of the present disclosure; DETAILED DESCRIPTION OF THE INVENTION

[0097] During the process of invention, the inventor found that there is no solution for selecting an appropriate manner to page a UE to inform it that an MBS service is about to start, and at least one of the following specific problems exists:

[0098] In the related art, paging of an idle UE is triggered by the core network, and whether to use group paging is determined by an Access and Mobility Management Function (AMF). Therefore, how to select an appropriate AMF, how the AMF determines the group paging area, or how to page a UE in a node that cannot support multicast within the area are problems that exist in the related art.

[0099] In addition, when a UE receives paging, it needs to calculate the paging occasion (PO) / paging frame (PF) according to its discontinuous reception (DRX) setting. How to calculate the PO or PF in group paging is a problem that needs to be solved.

[0100] At the same time, considering the energy saving needs of UEs, how to reduce the extra power consumption caused by false alarms to UEs caused by group paging is also a problem that needs to be solved.

[0101] Based on this, an embodiment of the present disclosure provides a method for transmitting and receiving a paging message, and the following describes a specific embodiment of the present disclosure in conjunction with the drawings.

[0102] In the course of the description, the implementation of the AMF side, the base station side, and the UE side will be described, and then examples implemented in accordance with them will be provided to better understand the implementation of the solutions provided in the embodiments of the present disclosure. Such described methods do not necessarily need to be implemented jointly or independently, and in fact, when implemented individually, they solve their own problems, and when used jointly, better technical effects can be achieved.

[0103] Figure 1 is a schematic flowchart of the implementation of the AMF side's paging message sending method, which may include the following step 101, as shown in the figure.

[0104] Step 101. When an MBS service is about to start, the AMF sends a paging message to each base station in the paging area according to the situation that each base station in the paging area supports the multicast broadcast feature.

[0105] FIG. 2 is a schematic flowchart of an implementation of a method for transmitting a paging message on the base station side, which may include the following steps 201-202, as shown in the figure.

[0106] Step 201. The base station receives a paging message sent from the AMF.

[0107] Step 202. After reading the information in the paging message, the base station pages the UE according to a situation where the base station supports the multicast broadcast feature.

[0108] FIG. 3 is a schematic flowchart of an implementation of a paging message receiving method on the UE side, which may include the following steps 301-302, as shown in the figure.

[0109] Step 301. The UE receives a paging message sent from the base station.

[0110] Step 302. The UE receives the MBS service after reading the information in the paging message according to the situation that the UE supports the multicast broadcast feature.

[0111] During implementation, the AMF determines whether the base station supports multicast broadcast characteristics when establishing an NG interface between the base station and the AMF.

[0112] Below, we will mainly explain the establishment of NG interface / AMF selection by the 5th generation (5G) base station and the next generation base station (the next generation Node B, gNB).

[0113] When establishing an NG interface between a gNB and an AMF, the gNB and AMF may interact with each other regarding whether to support multicast broadcast characteristics, and for gNBs that support multicast broadcast, the multicast broadcast characteristics are supported by preferentially selecting an AMF that supports multicast broadcast to establish an NG interface.

[0114] In implementation, the configuration manner of a Tracking Area (TA) includes one of the following: all base stations in a TA support MBS, or none of them support MBS, or a base station that supports MBS and a base station that does not support MBS are in the same TA.

[0115] The AMF can configure the following two types of TA configuration methods based on the information exchanged between the gNBs on whether they support multicast broadcasting: Method 1. Continue using the conventional TA configuration, and each TA may include cells / gNBs that support MBS and cells / gNBs that do not support MBS, and an identifier may be added to identify only cells that do not support MBS, cells that support MBS, or all cells. Method 2. MBS-only TA configuration, which includes two types of TA areas: one including only cells / gNBs that support MBS, and the other including only cells / gNBs that do not support MBS.

[0116] The following describes an implementation in which AMF triggers paging and notifies the UE of the session start to be started.

[0117] During implementation, the AMF determines the paging area by at least one or a combination of the following: the AMF determines the group paging area and the existing unicast paging area based on the TA list and the group member information of the multicast service; the AMF determines the group paging area and the unicast paging area based on the TA configuration method.

[0118] Specifically, AMF determines the area where group paging needs to be sent based on the TA list in the related art and the group member information of the multicast service, for example, the union of the TA list of the UE.

[0119] Also, based on one of the above different configuration methods for TA, obtaining a group paging area may mean that all cells support MBS group paging areas, and that there are MBS-dedicated TAs and TAs with an indication that the TAs support MBS, and the AMF sends group paging to the gNB, and this set of paging messages only contains MBS service information (e.g., Temporary Mobile Group Identity (TMGI), multicast broadcast address) that the session start is about to start, or that some cells support MBS group paging areas, and only some TAs in the area are MBS-dedicated TAs and TAs with an indication that the TAs support MBS. At the same time, there may be a case where an area is a non-group paging area, i.e., a normal TA and a TA with an indication that the TAs do not support MBS.

[0120] For non-group paging areas, what AMF triggers is unicast paging, that is, the existing paging message, that is, mainly contains UE identifier (UE ID) information.

[0121] For a group paging area where all cells support MBS, i.e., TAs dedicated to MBS included in the area and TAs with an indication that they support MBS, the AMF sends a group paging to the gNB, and this set of paging messages contains only the MBS service information (e.g., TMGI, multicast broadcast address) that the session start is trying to start, and may also contain UE ID information.

[0122] In practice, the paging message is transmitted to the UE via a base station by a unicast paging message or a multicast dedicated group paging message.

[0123] In practice, the paging message is sent through a unicast paging message or an independent paging message.

[0124] In specific implementation, on the AMF side, according to the situation that each base station in the paging area supports the multicast broadcast characteristic, sending a paging message to each base station: if there is a base station that supports the multicast broadcast characteristic in the paging area, Method A. session start sends a set of group paging messages containing information of the MBS service that the session start is about to start, and a set of paging messages containing UE ID information; or Method B. A set of paging messages including MBS service information and UE ID information corresponding to the MBS service that session start is about to start; or Method C. session start sends a group paging message including information of the MBS service to be started; Includes.

[0125] At the base station side, the base station reads information in the paging message according to the situation that the base station supports multicast broadcast characteristics; Method A. When a session start receives a set of group paging messages containing information about an MBS service to be started and a set of paging messages containing UE ID information, a base station that supports multicast broadcasting characteristics selects the group paging messages and transmits paging messages containing MBS service information at all paging times PO; or a base station that does not support multicast broadcasting characteristics selects the group paging messages and transmits paging messages containing only UE ID information at the PO corresponding to the UE ID; Or, Method B. when session start receives a set of paging messages including MBS service information and UE ID information corresponding to the service to be started, a base station that supports multicast broadcasting features sends a paging message including MBS service information or a paging message including MBS service information and carrying UE ID information in a PO corresponding to the UE ID information according to the UE ID information; or a base station that does not support multicast broadcasting features sends a paging message including only UE ID information in a PO corresponding to the UE ID information according to the UE ID information; Or, Method C. When a session start receives a group paging message containing information about an MBS service to be started, a base station that supports multicast broadcasting features sends a paging message containing MBS service information in all POs; or, based on group member information obtained from the core network, sends a paging message containing MBS service information or a paging message containing MBS service information and carrying UE ID information only in POs corresponding to members; or, a base station that does not support multicast broadcasting features requests corresponding UE ID information from the AMF, and then sends a paging message containing UE_ID only in POs corresponding to the UE ID; Includes.

[0126] Here, the method of obtaining group member information from the core network may be a joining process based on the UE or a process in which the base station applies to the core network.

[0127] In specific implementation, the MBS service information includes one or a combination of the following: an MBS session ID, a TMGI, and a multicast IP address.

[0128] Specifically, for a situation where some cells support MBS, the possible paging transmission schemes are as follows:

[0129] 1) Group paging information is passed through existing unicast paging messages.

[0130] Method A: For all base stations / cells in the same group paging area, the AMF sends two sets of paging messages, one of which contains only the MBS service information (e.g., TMGI, multicast broadcast address) that the session start is trying to start, and the other set of paging messages is the existing paging message, i.e., it contains only UE ID information.

[0131] For multiple base stations within the group paging area, based on whether they can support the multicast broadcast feature, a set of paging messages is selected and sent on the Radio Access Network (RAN) side, i.e., base stations that support the multicast broadcast feature select the group paging message and include MBS service information in all POs, and for base stations that do not support the multicast broadcast feature, a legacy paging message is selected, i.e., UE IDs are included in the corresponding POs.

[0132] Method B: For all base stations / cells in the same group paging area, the AMF sends the same set of information including the MBS service information (such as TMGI, multicast broadcast address) and UE ID information that the session start is about to start.

[0133] For multiple base stations in the group paging area, one set of paging messages is selected and transmitted on the RAN side based on whether it can support the multicast broadcast feature, i.e., a base station that supports the multicast broadcast feature selects a group paging message and includes MBS service information in all POs corresponding to IDs in the UE identifier list (UE ID list); for a base station that does not support the multicast broadcast feature, a legacy paging message is selected, i.e., the UE ID is included in the corresponding PO.

[0134] Method C: For all base stations / cells within the same group paging area, the AMF only sends group paging messages, i.e., the message sent by the AMF only includes the MBS service information (e.g., temporary mobile group identification (TMGI), multicast broadcast address) that the session start is about to start.

[0135] For base stations that support the multicast broadcast feature, a group paging message is selected and MBS service information is included in all POs; for base stations that do not support the multicast broadcast feature, it is necessary to interact with the AMF to request corresponding ID information, and send a legacy paging message including the UE ID in the corresponding PO.

[0136] Since a group paging message related to an MBS is included in a legacy paging message, it may result in extra power consumption for UEs that are not interested in the service to be initiated or that do not support / subscribe to the MBS service. Therefore, it is possible to indicate whether MBS group paging information is included by a short message or the like, and specific service information or service group information may be indicated. That is, in implementation, the base station may further include instructing the UE whether MBS group paging information is included in the paging message by using the group paging message transmitted by the existing unicast message, the short message method, or only the existing paging message. In response to this, the UE side determines whether the paging message includes MBS group paging information or is only a paging message according to the instruction of the short message method.

[0137] In this case, after a UE that supports MBS receives a paging message from its corresponding PO, the UE not only needs to read the UE ID list but also needs to read the MBS service information part, and should not read only part of it. That is, in implementation, if the UE supports MBS, after receiving a paging message from the PO corresponding to the MBS, the method may further include reading the UE ID list and the MBS service information.

[0138] Specifically, the base station selects and transmits corresponding content to the UE according to whether it supports multicast broadcasting or not based on the received information.

[0139] The reason for transmitting depending on whether the base station supports multicast broadcast is that the message is not sent individually to a specific base station, but is sent based on whether the area contains only nodes that do not support MBS, and only one set of the same message can be sent to all base stations within a single paging area.

[0140] If all nodes in this paging area do not support MBS, only the paging message needs to be sent. As long as there are nodes in the paging area that support MBS, they can be sent in one of the three ways.

[0141] 2) A group paging message is an individual paging message.

[0142] Similar to the method in which group paging information is transmitted in the existing unicast paging message, the AMF may select one of methods A, B, or C to transmit a group paging message to all base stations in the paging area, and the group paging message is transmitted at a separate group PO (G-PO) / group PF (G-PF) position of the group paging, and the message does not include UE information but only includes identifier information of the multicast service to be started, such as an MBS session identifier (MBS session ID), TMGI, etc.

[0143] In implementation, the network may additionally allocate a Radio Network Temporary Identifier (RNTI) for MBS group paging for the UE, and in an embodiment, a Group Paging RNTI (GP-RNTI) identifier is allocated to the UE during the UE's registration or joining.

[0144] After the UE joins and then releases to a disconnected state, the UE reserves some MBS texts, including but not limited to mapping between different MBS services and Group-Radio Network Temporary Identities (G-RNTIs) (the mapping relationship between MBS sessions and G-RNTIs), GP-RNTIs, etc. That is, during implementation, the method may further include a step in which the UE receives an RNTI used for the MBS group paging message, which is assigned by the base station during registration or joining.

[0145] The method further includes reserving one or a combination of the following MBS texts: a mapping relationship between different MBS services and G-RNTIs, and a GP-RNTI when the UE is released to an unconnected state after joining.

[0146] The following describes how to set and calculate the G-PO / G-PF corresponding to group paging.

[0147] During implementation, the method may further include a step of the base station setting the MBS-dedicated DRX cycle through a system message.

[0148] Specifically, the network sets an MBS-dedicated DRX cycle (which may be the same as the default unicast paging cycle in the cell) through a system message (e.g., System Information Block 1 (SIB 1)), and the network can set one or more DRX settings based on the delay requirements of the service, etc.

[0149] During implementation, at the base station side, Method 1. The base station sets a specific radio frame and subframe position for receiving a group paging message within an MBS-dedicated DRX period by a system message, or Method 2. For multicast services with the same set of MBS-dedicated DRX cycle settings, the base station distributes the time domain positions where the MBS service subscribers or interested user groups need to monitor paging to different POs or PFs based on the service identifier information of the MBS services; It may further include:

[0150] Correspondingly, on the UE side, Method 1. The base station receives a specific radio frame and subframe position for receiving a multicast dedicated group paging message within an MBS dedicated DRX period set by a system message; or Method 2. The base station receives the same set of MBS-dedicated DRX cycles configured for multiple multicast services, and the UE wakes up the PO or PF corresponding to the subscribed MBS service to listen to the group paging message to determine whether the MBS service is about to start; It may further include:

[0151] Specifically, for PO / PF receiving a paging message, the specific methods may be the following methods 1 and 2.

[0152] Method 1: The network configures via a system message (e.g., SIB 1) to receive group paging messages at a specific radio frame and subframe position within the period.

[0153] Scheme 2: For multicast services with the same set of DRX settings, distribute them into different POs / PFs based on their service identifier information. That is, any UE that subscribes to any multicast service will wake up to the PO / PF corresponding to the service to listen to the group paging and check whether the service is about to start. Specifically, the scheme is as follows:

[0154] The calculation of G-PF(SFN) is as follows: (SFN + PF_offset_multicast) mod T' = (T' div N) * (Multicast_ID mod N) [(System Frame Number + PF Multicast Offset) modulo T' = (T' divergence N) * (Multicast Identifier modulo N)] The calculation of G-PO(Index(i_s)) is as follows: i_s = floor(Multicast_ID / N) mod Ns [i_s = round down(Multicast_ID / N)] where: T' = Multicast DRX cycle (network setting, possibly related to service delay requirements), N is the total number of paging frames in one MBS DRX period, Ns is the number of G-POs in one G-PF, PF_offset_multicast determines the offset of PF. Multicast_ID is (TMGI, G-RNTI, MBS session ID, multicast IP address or other specific ID) mod 1024. SFN stands for System Frame Number.

[0155] In this case, the physical downlink control channel (PDCCH) for indicating group paging may be scrambled using a paging-radio network temporary identity (P-RNTI) or a group-radio network temporary identity (G-RNTI) / GP-RNTI.

[0156] The implementation of conflict resolution between G-PO and legacy PO will be described below.

[0157] During implementation, at the base station side, it may further include scrambling the group paging message by the G-RNTI or the GP-RNTI, or scrambling the group paging message and the unicast paging message by the P-RNTI.

[0158] Correspondingly, at the UE side, it may further include descrambling the group paging message using the G-RNTI or GP-RNTI, or descrambling the group paging message and the unicast paging message using the P-RNTI.

[0159] It is inevitable that G-POs will collide with all or part of the legacy PO locations, causing some UEs to be unable to receive multicast group paging and unicast paging simultaneously. This can be resolved in the following ways: 1) Group paging is scrambled using G-RNTI or GP-RNTI, making it easy for UEs to receive group paging and unicast paging simultaneously; 2) Both group paging and unicast paging are scrambled using the P-RNTI.

[0160] During implementation, when the base station scrambles the multicast-only group paging message and the unicast paging message by the P-RNTI, the method further includes the steps of setting a G-PO or a unicast paging PO receiving offset, adding the group paging message to the unicast paging message, and setting a UE energy saving mode.

[0161] Correspondingly, on the UE side, when descrambling the group paging message and the unicast paging message using the P-RNTI, the method further includes the steps of receiving a G-PO or unicast paging PO reception offset set by the base station, receiving a unicast paging message with the group paging message added, and receiving a UE energy saving mode set by the base station.

[0162] By setting the AG-PO or existing unicast paging PO reception offset, the network may set the G-PO or unicast PO reception offset (or offset window), i.e., the network may retransmit the G-PO or unicast PO at the offset (window) position.

[0163] The offset may be configured by a system message, for example, included in the G-PO or legacy unicast paging configuration in SIB1, or configured for only some UEs by RRC (Radio Resource Control) dedicated signaling, or if both are used simultaneously and an RRC configuration is present, the RRC configuration may be used as a reference. When a collision occurs, the UE receives a group paging message or a unicast paging message at an offset (window) position based on the configuration. That is, during implementation, the G-PO or unicast paging PO reception offset is configured through one or a combination of a system message and RRC dedicated signaling.

[0164] B. Add a group paging message to an existing unicast paging message.

[0165] During implementation, when the UE receives a unicast paging message with the group paging message added, if the UE supports MBS service, it further includes the steps of reading an IE containing an MBS service identifier to determine whether there is an MBS service that the UE is interested in / subscribed to, and reading and checking an information element (IE) containing UE ID information in the paging message; or if the UE does not support MBS service, it further includes the steps of reading and checking an IE containing UE ID information in the message to determine whether a paging message sent from the network has been received.

[0166] Specifically, the gNB adds a group paging message to the unicast paging, and for a UE that receives the paging message, if it supports the MBS service, in addition to checking the UE list, it also reads the MBS service identifier part to determine whether the MBS service is available; if it does not support the MBS service, it only checks the UE list to determine whether it has received the existing paging sent by the network.

[0167] C. Set UE energy saving mode.

[0168] During implementation, on the UE side, when the UE receives the UE energy saving mode set by the base station, if the UE does not receive the message broadcast by the base station indicating whether it supports MBS service, the method may further include waking up only to the PO or PF of the existing unicast paging to receive the unicast paging.

[0169] Specifically, if a base station does not broadcast whether it supports MBS services, it will only wake up at the PO or PF of existing unicast paging to receive unicast paging, rather than waking up at the multicast-only PO or PF time to receive multicast-only group paging messages.

[0170] Since the multicast-dedicated PO / PF can be used to receive multicast group paging only in cells that support multicast, the cell can broadcast whether it supports multicast through a system message, and can broadcast specific information about the services it supports, etc. If the network does not broadcast this information, the UE does not need to wake up at the dedicated PO / PF time to receive multicast because the cell does not support multicast by default, and only needs to wake up at the unicast paging PO / PF to receive unicast paging.

[0171] Based on the same inventive concept, the embodiments of the present disclosure further provide an AMF, a base station, user equipment, and a computer storage medium, and the principles by which these devices solve the problems are similar to the methods for sending paging messages and receiving paging messages. Therefore, for the implementation of these devices, please refer to the implementation of the methods, and overlapping descriptions will be omitted.

[0172] The technical solutions provided by the embodiments of the present disclosure may be implemented in the following manner.

[0173] FIG. 4 is a schematic diagram of the AMF structure. As shown in the figure, the AMF includes a processor 400 that reads a program in a memory 420 and executes a process of sending a paging message to each base station in a paging area when an MBS service is about to start, depending on whether each base station in the paging area supports multicast broadcast characteristics, and a transceiver 410 for transmitting and receiving data under the control of the processor 400.

[0174] During implementation, when establishing an NG interface between the base station and the AMF, it is determined whether the base station supports the multicast broadcast feature.

[0175] During implementation, the paging area is determined by one or a combination of determining the paging area based on the TA list and group member information of the multicast service, determining the paging area based on the TA configuration method, and so on.

[0176] In implementation, the TA configuration manner includes one of the following: all base stations in the TA support MBS, or none of them support MBS, or a base station that supports MBS and a base station that does not support MBS are in the same TA.

[0177] In practice, the paging message is transmitted to the UE via a base station by a unicast paging message or a multicast dedicated group paging message.

[0178] During implementation, according to a situation where each base station in the paging area supports the multicast broadcast feature, the step of sending paging messages to each base station further includes, if there is a base station in the paging area that supports the multicast broadcast feature, sending a set of group paging messages including MBS service information that the session start is to start and a set of paging messages including UE ID information, or a set of paging messages including MBS service information that the session start is to start and UE ID information corresponding to the MBS service, or sending a group paging message including MBS service information that the session start is to start.

[0179] In implementation, the MBS service information includes one or a combination of the following: an MBS session ID, a TMGI, and a multicast IP address.

[0180] In FIG. 4, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits, such as one or more processors, including processor 400, and memory, including memory 420. The bus architecture may also link various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described in detail herein. The bus interface provides an interface. The transceiver 410 may include multiple elements, such as a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium. The processor 400 is responsible for managing the bus architecture and normal processing, and the memory 420 can store data used by the processor 400 when performing operations.

[0181] An embodiment of the present disclosure further provides an AMF, which includes an AMF paging module for sending a paging message to each base station within a paging area when an MBS service is about to start, depending on whether each base station within the paging area supports multicast broadcast characteristics.

[0182] During implementation, the AMF determination module further determines whether the base station supports multicast broadcast characteristics when establishing an NG interface between the base station and the AMF.

[0183] During implementation, the AMF paging module further determines the paging area by at least one or a combination of the following: the AMF determines the group paging area and the unicast paging area based on the TA list and the group member information of the multicast service; the AMF determines the group paging area and the unicast paging area based on the TA configuration method.

[0184] During implementation, the AMF paging module further includes one of the following: the configuration manner of the TA is that all base stations in the TA support MBS, or none of them support MBS, or a base station that supports MBS and a base station that does not support MBS are in the same TA.

[0185] In practice, the AMF paging module is further used when the paging message is sent by the base station to the UE through a unicast paging message or a multicast dedicated group paging message.

[0186] During implementation, the AMF paging module further includes, according to a situation in which each base station in the paging area supports the multicast broadcast characteristic, a step of sending a paging message to each base station, if there is a base station in the paging area that supports the multicast broadcast characteristic, a step of sending a set of group paging messages including MBS service information that the session start is to start and a set of paging messages including UE ID information, or a step of sending a set of paging messages including MBS service information that the session start is to start and UE ID information corresponding to the MBS service, or a step of sending a group paging message including MBS service information that the session start is to start.

[0187] During implementation, the AMF paging module further sends MBS service information including one or a combination of an MBS session ID, a TMGI, and a multicast IP address.

[0188] For ease of explanation, the above-described devices are described by dividing them into various modules or units according to their functions. Of course, when implementing the present disclosure, the functions of the modules or units may be realized by the same or multiple pieces of software or hardware.

[0189] Figure 5 is a structural schematic diagram of a base station. As shown in the figure, the base station includes: a processor 500 for reading a program in a memory 520 to receive a paging message sent from an AMF, reading information in the paging message, and then executing a process of paging a UE according to a situation in which the base station supports multicast broadcast characteristics; and a transceiver 510 for transmitting and receiving data under the control of the processor 500.

[0190] During implementation, according to a situation where the base station supports the multicast broadcast feature, the step of reading information in the paging message includes: when a set of group paging messages including MBS service information to be started by session start and a set of paging messages including UE ID information are received, a base station supporting the multicast broadcast feature selects the group paging messages and transmits paging messages including the MBS service information at all paging times PO; or a base station not supporting the multicast broadcast feature selects the paging messages and transmits paging messages including only the UE ID information at the PO corresponding to the UE ID; when a set of paging messages including MBS service information to be started by session start and UE ID information corresponding to the service are received, a base station supporting the multicast broadcast feature transmits, based on the UE ID information, a paging message including the MBS service information or a paging message including the MBS service information and carrying the UE ID information at the PO corresponding to the UE ID information; or a base station not supporting the multicast broadcast feature transmits, based on the UE ID information, a paging message including only the UE ID information at the PO corresponding to the UE ID information; or When the base station that supports the multicast broadcast feature receives a group paging message including the MBS service information that the MBS service start is about to start, the base station that supports the multicast broadcast feature sends a paging message including the MBS service information in all POs, or sends a paging message including the MBS service information or a paging message including the MBS service information and carrying UE ID information only in POs corresponding to the members based on group member information obtained from the core network; or, after the base station that does not support the multicast broadcast feature requests the corresponding UE ID information from the AMF, the UEThe method includes a step of transmitting a paging message including the UE_ID only in the PO corresponding to the ID.

[0191] During implementation, the method further includes setting an MBS-dedicated DRX period via a system message.

[0192] In practice, the paging message is transmitted to the UE via a base station by a unicast paging message or a multicast dedicated group paging message.

[0193] In implementation, the PO through which the base station sends the group paging message further includes a PO obtained based on the UE ID when sending through a unicast paging message, or a PO obtained based on MBS service information when sending through an MBS-dedicated group paging message.

[0194] During implementation, the method further includes the step of indicating, for the group paging message transmitted through the unicast message, whether it includes MBS group paging information or whether it is of a type that includes MBS group paging information, using a short message.

[0195] During implementation, the method further includes a step of setting, by a system message, specific radio frame and subframe positions for receiving group paging messages within an MBS-dedicated DRX period, or for multicast services with the same set of MBS-dedicated DRX period settings, distributing the time domain positions where MBS service subscribed or interested user groups need to monitor paging to different POs or PFs based on service identifier information of the MBS services.

[0196] During implementation, the method further includes scrambling the group paging message by the G-RNTI or the GP-RNTI, or scrambling the group paging message and the unicast paging message by the P-RNTI.

[0197] During implementation, if the multicast-only group paging message and the unicast paging message are scrambled by the P-RNTI, the method further includes the steps of setting a G-PO or a unicast paging PO reception offset, adding the group paging message to the unicast paging message, and setting a UE energy saving mode.

[0198] During implementation, when the G-PO or unicast paging PO reception offset is configured, it is configured through one or a combination of a system message, an RRC dedicated signaling, or both.

[0199] In FIG. 5, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits, such as one or more processors, including processor 500, and memory, including memory 520. The bus architecture may also link various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described in detail herein. The bus interface provides an interface. The transceiver 510 may include multiple elements, such as a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium. The processor 500 is responsible for managing the bus architecture and normal processing, and the memory 520 can store data used by the processor 500 when performing operations.

[0200] An embodiment of the present disclosure further provides a base station, which includes: a base station receiving module for receiving a paging message sent from the AMF; and a base station paging module for reading information in the paging message and then paging a UE according to a situation in which the base station supports multicast broadcast characteristics.

[0201] During implementation, the base station paging module further comprises the steps of: according to a situation in which the base station supports a multicast broadcast feature, reading information in the paging message; when receiving a set of group paging messages including MBS service information to be started by session start and a set of paging messages including UE ID information, a base station supporting the multicast broadcast feature selects the group paging messages and sends paging messages including the MBS service information at all paging times PO; or a base station not supporting the multicast broadcast feature selects the paging messages and sends paging messages including only UE ID information in a PO corresponding to the UE ID; when receiving a set of paging messages including MBS service information to be started by session start and UE ID information corresponding to the service, a base station supporting the multicast broadcast feature sends, based on the UE ID information, a paging message including the MBS service information or a paging message including the MBS service information and carrying the UE ID information, in a PO corresponding to the UE ID information; or a base station not supporting the multicast broadcast feature sends, based on the UE ID information, a paging message including only UE ID information in a PO corresponding to the UE ID information; or When the base station that supports the multicast broadcast feature receives a group paging message including the MBS service information that the MBS service start is about to start, the base station that supports the multicast broadcast feature sends a paging message including the MBS service information in all POs, or sends a paging message including the MBS service information or a paging message including the MBS service information and carrying UE ID information only in POs corresponding to the members based on group member information obtained from the core network; or, after the base station that does not support the multicast broadcast feature requests the corresponding UE ID information from the AMF, the UEand transmitting a paging message including the UE_ID only to the PO corresponding to the ID.

[0202] During implementation, the base station paging module further sets an MBS-dedicated DRX period through a system message.

[0203] In practice, the base station paging module further transmits the paging message to the UE through the base station via a unicast paging message or a multicast dedicated group paging message.

[0204] During implementation, the base station paging module further sends a group paging message to the PO, and if sent through a unicast paging message, the PO is a PO obtained based on the UE ID, or if sent through an MBS-dedicated group paging message, the PO is a PO obtained based on MBS service information.

[0205] During implementation, the base station paging module further indicates, for the group paging message sent through the unicast message, whether it includes MBS group paging information or whether it is a type that includes MBS group paging information through a short message.

[0206] During implementation, the base station paging module further sets, by a system message, a specific radio frame and subframe position for receiving group paging messages within an MBS-dedicated DRX cycle, or for multicast services with the same set of MBS-dedicated DRX cycle settings, distributes the time domain positions where MBS service subscribed or interested user groups need to monitor paging to different POs or PFs based on the service identifier information of the MBS services.

[0207] In implementation, the base station paging module further scrambles the group paging message by the G-RNTI or the GP-RNTI, or scrambles the group paging message and the unicast paging message by the P-RNTI.

[0208] During implementation, the base station paging module further sets a G-PO or unicast paging PO receiving offset when scrambling the multicast-only group paging message and the unicast paging message according to the P-RNTI, adds the group paging message to the unicast paging message, and sets the UE energy saving mode.

[0209] In practice, when the base station paging module sets the G-PO or unicast paging PO reception offset, it sets it through one of a system message, an RRC dedicated signaling, or a combination thereof.

[0210] For ease of explanation, the above-described devices are described by dividing them into various modules or units according to their functions. Of course, when implementing the present disclosure, the functions of the modules or units may be realized by the same or multiple pieces of software or hardware.

[0211] FIG. 6 is a structural schematic diagram of a UE. As shown in the figure, the user equipment includes: a processor 600 for reading a program in a memory 620 to receive a paging message sent from a base station; and, according to a situation where the UE supports multicast broadcast characteristics, reading the information in the paging message and then executing a process for receiving an MBS service; and a transceiver 610 for transmitting and receiving data under the control of the processor 600.

[0212] During implementation, the method further includes receiving an RNTI used for MBS group paging messages, which is assigned by the base station during registration or joining.

[0213] During implementation, when released to a disconnected state after joining, the method further includes reserving one or a combination of the following: a mapping relationship between different MBS services and G-RNTI, a GP-RNTI, and an MBS text.

[0214] In implementation, if MBS is supported, the method further includes the step of reading the UE ID list and MBS service information after receiving a paging message in a PO corresponding to the MBS.

[0215] During implementation, the method further includes determining, according to the indication of the short message mode, whether the paging message includes MBS group paging information or is only a paging message.

[0216] During implementation, the method further includes the step of descrambling the group paging message by the G-RNTI or the GP-RNTI, or the step of descrambling the group paging message and the unicast paging message by the P-RNTI.

[0217] During implementation, when descrambling the group paging message and the unicast paging message according to the P-RNTI, the method further includes the steps of receiving a G-PO or unicast paging PO reception offset set by the base station, receiving a unicast paging message with the group paging message added, and receiving a UE energy saving mode set by the base station.

[0218] During implementation, when the base station receives the configured G-PO or unicast paging PO reception offset, it sets it through one of a system message, an RRC dedicated signaling, or a combination thereof.

[0219] During implementation, when a unicast paging message with a group paging message added is received, if the UE supports MBS service, the method further includes the step of reading an IE including an MBS service identifier to determine whether there is an MBS service that the UE is interested in / subscribed to, and reading and checking an IE including UE ID information in the paging message; or if the UE does not support MBS service, the method further includes the step of reading and checking an IE including UE ID information in the message to determine whether a paging message sent from the network has been received.

[0220] During implementation, when the base station receives the UE energy saving mode set, if the base station does not receive the message broadcast by the base station indicating whether the UE supports MBS service, the method further includes the step of waking up only at the PO or PF of the unicast paging to receive the unicast paging.

[0221] During implementation, the method further includes the steps of receiving a specific radio frame and subframe position for receiving a multicast-dedicated group paging message within an MBS-dedicated DRX period set by the base station through a system message, or receiving the same set of MBS-dedicated DRX periods set by the base station for multiple multicast services, and having the UE wake up to the PO or PF corresponding to the subscribed MBS service to listen to the group paging message, thereby checking whether the MBS service is about to start.

[0222] In FIG. 6, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits, such as one or more processors, including processor 600, and memory, including memory 620. The bus architecture may also link various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described in detail herein. The bus interface provides an interface. The transceiver 610 may include multiple elements, such as a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium. For different user equipment, the user interface 630 may be an interface that can connect required devices externally or internally, including, but not limited to, a keypad, a monitor, a speaker, a microphone, a joystick, etc.

[0223] The processor 600 is responsible for managing the bus architecture and normal processing, and the memory 620 may store data used by the processor 600 when performing operations.

[0224] An embodiment of the present disclosure further provides a UE, which includes: a UE paging module for receiving a paging message sent from a base station; and a UE receiving module for receiving an MBS service after reading information in the paging message according to a situation in which the UE supports a multicast broadcast characteristic.

[0225] During implementation, the UE receiving module further receives an RNTI used for the MBS group paging message, which is assigned by the base station during registration or joining.

[0226] During implementation, the UE receiving module further reserves one or a combination of the following MBS texts: mapping relationship between different MBS services and G-RNTI, GP-RNTI, when released into a disconnected state after joining.

[0227] During implementation, if the UE supports MBS, the UE receiving module further reads the UE ID list and MBS service information after receiving a paging message in the PO corresponding to the MBS.

[0228] During implementation, the UE receiving module further determines, according to the indication of the short message mode, whether the paging message contains MBS group paging information or is only a paging message.

[0229] During implementation, the UE receiving module further descrambles the group paging message by the G-RNTI or the GP-RNTI, or descrambles the group paging message and the unicast paging message by the P-RNTI.

[0230] During implementation, the UE receiving module further descrambles the group paging message and the unicast paging message according to the P-RNTI, receives the G-PO or unicast paging PO receiving offset set by the base station, receives the unicast paging message with the group paging message added, and receives the UE energy saving mode set by the base station.

[0231] During implementation, the UE receiving module further configures the G-PO or unicast paging PO receiving offset set by the base station through one of a system message, an RRC dedicated signaling, or a combination thereof.

[0232] During implementation, the UE receiving module further reads an IE including an MBS service identifier when receiving a unicast paging message with a group paging message added, if the UE supports MBS service, to determine whether there is an MBS service that the UE is interested in / subscribed to, and reads and checks an IE including UE ID information in the paging message; or if the UE does not support MBS service, reads and checks an IE including UE ID information in the message to determine whether a paging message sent from the network has been received.

[0233] During implementation, when the UE receiving module receives the UE energy saving mode set by the base station, if it does not receive the message broadcast by the base station indicating whether it supports MBS service, it will only wake up at the PO or PF of the unicast paging to receive the unicast paging.

[0234] During implementation, the UE receiving module further receives a specific radio frame and subframe position for receiving a multicast dedicated group paging message within the MBS dedicated DRX period set by the base station through a system message, or receives the same set of MBS dedicated DRX periods set by the base station for multiple multicast services, and the UE is woken up by the PO or PF corresponding to its subscribed MBS service to listen to the group paging message, thereby confirming whether the MBS service is about to start.

[0235] For ease of explanation, the above-described devices are described by dividing them into various modules or units according to their functions. Of course, when implementing the present disclosure, the functions of the modules or units may be realized by the same or multiple pieces of software or hardware.

[0236] An embodiment of the present disclosure further provides a computer-readable storage medium, which stores a computer program for executing the above-mentioned AMF-side paging message transmission method, the base station-side paging message transmission method, or the UE-side paging message reception method.

[0237] For specific implementation, please refer to the implementation of the paging message transmission method on the AMF side, the paging message transmission method on the base station side, or the paging message reception method on the UE side.

[0238] Based on the above, in the technical solution provided by the embodiments of the present disclosure, the manner in which AMF sends a paging message to a base station is as follows: Two sets of paging messages are sent, one of which contains only the MBS service information (e.g., TMGI, multicast broadcast address) that the session start is about to start, and the other is an existing paging message, i.e., it contains only the UE ID information. The AMF transmits the same set of information, including the MBS service information (e.g., TMGI, multicast broadcast address) and UE ID information that the session start is about to start. The AMF only sends group paging messages, i.e., the message sent by the AMF only contains the MBS service information (e.g., TMGI, multicast broadcast address) that the session start is trying to start.

[0239] It also provides MBS-specific paging configuration and G-PO / PF calculation methods.

[0240] A solution is further provided in which MBS group paging is scrambled by a dedicated RNTI or G-RNTI.

[0241] When the UE enters the idle / inactive state after joining, it further provides for reserving MBS text, including but not limited to mapping between different MBS services and G-RNTI (mapping relationship between MBS session and G-RNTI), GP-RNTI, etc.

[0242] It further provides that whether or not MBS is supported is taken into consideration when establishing an NG interface.

[0243] It is also possible to set TA using MBS.

[0244] We further provide a configuration suggestion for G-PO / unicast PO offset (window).

[0245] It also provides a solution for a network to broadcast whether it supports multicast and specifically broadcast the services it supports.

[0246] The above solution can ensure that different base stations select appropriate ways to page the UE to inform it that an MBS service is about to start, while reducing the impact on the UE.

[0247] As will be appreciated by those skilled in the art, embodiments of the present disclosure may be provided as a method, a system, or a computer program product. Thus, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. The present disclosure may also take the form of a computer program product embodied in one or more computer-usable storage media (including, but not limited to, magnetic disk memory, optical memory, etc.) containing computer-usable program code.

[0248] The present disclosure has been described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present disclosure. Each flow and / or block in the flowcharts and / or block diagrams, or a combination of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, whereby the instructions executed by the processor of the computer or other programmable data processing device generate an apparatus for implementing the function(s) specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0249] These computer program instructions can be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture that includes an instruction apparatus that implements the functions specified in one or more flows of the flowcharts and / or one or more blocks of the block diagrams.

[0250] These computer program instructions can be loaded into a computer or other programmable data processing device such that a series of operational steps are performed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more flows of the flowcharts and / or one or more blocks of the block diagrams.

[0251] It should be noted that the embodiments described in the embodiments of the present disclosure can be realized in hardware, software, firmware, middleware, microcode, or a combination thereof. Regarding hardware realization, a module, unit, sub-module, sub-unit, etc. can be realized in one or more application specific integrated circuits (ASICs), digital signal processing (DSPs), digital signal processing devices (DSP devices, DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units that perform the functions described in the present disclosure, or a combination thereof.

[0252] Obviously, those skilled in the art may make various modifications and variations to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure also includes these modifications and variations.

Claims

1. A method for transmitting a paging message, comprising: The access and mobility management function (AMF) includes, when a multicast broadcast service (MBS) service is about to start, sending a paging message to each base station in a paging area according to whether each base station supports a multicast broadcast feature; If there is a base station that supports the multicast broadcast feature within the paging area, the step of transmitting a paging message to each base station according to whether each base station supports the multicast broadcast feature includes: A group paging message containing information about an MBS service that a session start is about to start, and a paging message containing information about a user equipment identifier (UE ID), or Sending a paging message including MBS service information that the session start is about to start and UE ID information corresponding to the MBS service; or sending a group paging message including information of the MBS service that the session start is about to start; A method for sending a paging message, including:

2. The method of claim 1, wherein the AMF determines whether the base station supports multicast broadcast characteristics when establishing an NG interface between the base station and the AMF.

3. AMF is The AMF determines a group paging area and a unicast paging area based on a tracking area list (TA list) and group member information of a multicast service; The AMF determines a group paging area and a unicast paging area based on a configuration manner of a tracking area TA; 2. The method of claim 1, wherein the paging area is determined by at least one of the following or a combination thereof:

4. The TA setting method is as follows: Either all base stations in the TA support MBS, or none of them support MBS, or A base station that supports MBS and a base station that does not support MBS are in the same TA; 4. The method of claim 3, comprising one of:

5. 2. The method of claim 1, wherein the paging message is transmitted via a base station to a user equipment (UE) via a unicast paging message or a multicast dedicated group paging message.

6. The method of claim 1, wherein the MBS service information includes one or a combination of an MBS session ID, a temporary mobile group identifier (TMGI), and a multicast IP address.

7. A method for transmitting a paging message, comprising: A base station receives a paging message sent from an AMF; After the base station reads the information in the paging message, paging the UE according to a situation where the base station supports multicast broadcast characteristics; Including, The step of the base station reading the information in the paging message and then paging the UE according to a situation where the base station supports a multicast broadcast feature includes: When a group paging message including MBS service information that session start is about to start and a paging message including UE ID information are received, A base station supporting a multicast broadcast feature selects the group paging message and transmits a paging message including MBS service information at every paging occasion (PO), or a base station not supporting a multicast broadcast feature selects the paging message and transmits a paging message including only UE ID information at a PO corresponding to a UE ID; Or, When the session start receives a paging message including MBS service information to be started and UE ID information corresponding to the service, A base station supporting multicast broadcast characteristics sends, based on the UE ID information, a paging message including MBS service information in a PO corresponding to the UE ID information, or a paging message including MBS service information and carrying the UE ID information; or A base station that does not support the multicast broadcast feature sends, based on the UE ID information, a paging message including only the UE ID information in a PO corresponding to the UE ID information; Or, When a group paging message containing information about the MBS service that session start is about to start is received, A base station supporting multicast broadcast feature sends a paging message including MBS service information in all POs, or sends a paging message including MBS service information, or a paging message including MBS service information and carrying UE ID information, only in POs corresponding to members based on group member information obtained from a core network; or A base station that does not support the multicast broadcast feature requests corresponding UE ID information from the AMF, and then sends a paging message including the UE_ID only in the PO corresponding to the UE ID; A method for sending a paging message, including:

8. 8. The method of claim 7, further comprising the step of the base station setting an MBS-only discontinuous reception (DRX) period by a system message.

9. The method of claim 7, wherein the paging message is transmitted to the UE via a base station by a unicast paging message or a multicast dedicated group paging message.

10. The PO at which the base station transmits the group paging message is If sending via a unicast paging message, the PO obtained based on the UE ID, or When transmitting through an MBS-dedicated group paging message, the PO obtained based on the MBS service information, 10. The method of claim 9, comprising:

11. 10. The method of claim 9, further comprising the step of indicating, by a short message, whether the group paging message transmitted through the unicast message includes MBS group paging information or whether the group paging message is of a type including MBS group paging information.

12. The base station sets, by a system message, a specific radio frame and subframe position for receiving the group paging message within the MBS-dedicated DRX period; or The base station distributes time domain positions where MBS service subscriptions or interested user groups need to monitor paging to different POs or paging frames (PFs) based on service identifier information of the MBS services for multicast services with the same set of MBS-dedicated DRX cycle settings; 10. The method of claim 9, comprising:

13. Scrambling the group paging message with a Group Radio Network Temporary Identifier (G-RNTI) or a Group Paging Radio Network Temporary Identifier (GP-RNTI), or scrambling group paging messages and unicast paging messages with a paging-radio network temporary identifier (P-RNTI); 10. The method of claim 9, comprising:

14. When multicast-only group paging messages and unicast paging messages are scrambled by P-RNTI, setting a group paging time (G-PO) or a unicast paging PO reception offset; adding a group paging message to a unicast paging message; setting a UE energy saving mode; 14. The method of claim 13, comprising:

15. 1. A method for receiving a paging message, comprising: receiving, by the UE, a paging message sent from a base station; receiving an MBS service after the UE reads the information in the paging message according to a situation where the UE supports multicast broadcasting characteristics; Including, If the UE supports the multicast broadcast feature, the step of the UE reading information in the paging message according to a situation in which the UE supports the multicast broadcast feature includes: A group paging message containing information about an MBS service that a session start is about to start, and a paging message containing information about a user equipment identifier (UE ID), or Reading a paging message including MBS service information that the session start is about to start and UE ID information corresponding to the MBS service; or reading a group paging message containing information about an MBS service that the session start is about to start; A method for receiving a paging message, including:

16. 16. The method of claim 15, comprising the step of the UE receiving, during registration or join, a Radio Network Temporary Identifier (RNTI) assigned by the base station for use in MBS group paging messages.

17. The method of claim 16, further comprising reserving one or a combination of the following MBS texts: mapping relationships between different MBS services and G-RNTIs, GP-RNTIs, when the UE is released to a disconnected state after joining.

18. The method of claim 16, further comprising: if the UE supports MBS, reading the UE ID list and MBS service information after receiving a paging message in a PO corresponding to the MBS service.

19. The method of claim 15, further comprising: determining whether the paging message includes MBS group paging information or is only a paging message according to an indication of a short message method.

20. descrambling the group paging message by the G-RNTI or GP-RNTI; or descrambling the group paging message and the unicast paging message by the P-RNTI; 16. The method of claim 15, comprising:

21. When descrambling group paging messages and unicast paging messages by P-RNTI, receiving a G-PO or unicast paging PO reception offset set by a base station; receiving a unicast paging message with an additional group paging message; receiving a UE energy saving mode set by a base station; 21. The method of claim 20, comprising:

22. When receiving a unicast paging message with a group paging message added, If the UE supports the MBS service, reading an IE containing an MBS service identifier to check whether there is an MBS service that the UE is interested in / subscribed to, and reading and checking an IE containing UE ID information in the paging message; or If the UE does not support the MBS service, determining whether the paging message sent from the network has been received by reading and checking an IE containing UE ID information in the paging message; 22. The method of claim 21, comprising:

23. When the base station receives the UE energy saving mode set, The method of claim 21, further comprising: waking up only at the PO or PF of unicast paging to receive unicast paging if the base station does not receive a message broadcast by the base station indicating whether it supports MBS service.

24. receiving a specific radio frame and subframe position for receiving the multicast dedicated group paging message within the MBS dedicated DRX period set by the base station through a system message; or receiving the same set of MBS-dedicated DRX cycles set by the base station for multiple multicast services, and the UE waking up to the PO or PF corresponding to the subscribed MBS service and listening to a group paging message to confirm whether the MBS service is about to start; 16. The method of claim 15, comprising:

25. AMF, Read the program in memory a processor for executing a process of sending a paging message to each base station in a paging area when an MBS service is about to start, depending on whether each base station supports a multicast broadcast feature; a transceiver for transmitting and receiving data under the control of a processor; Including, If there is a base station in the paging area that supports the multicast broadcast feature, the processor further A group paging message containing information about an MBS service that a session start is about to start, and a paging message containing information about a user equipment identifier (UE ID), or Send a paging message including MBS service information that the session start is about to start and UE ID information corresponding to the MBS service, or The AMF sends a group paging message including information about the MBS service that session start is about to start.

26. AMF, When an MBS service is about to be started, an AMF paging module is included for sending a paging message to each base station in a paging area according to whether each base station supports a multicast broadcast feature; If there is a base station that supports multicast broadcast characteristics within the paging area, the AMF paging module further: A group paging message containing information about an MBS service that a session start is about to start, and a paging message containing information about a user equipment identifier (UE ID), or Send a paging message including MBS service information that the session start is about to start and UE ID information corresponding to the MBS service, or The AMF sends a group paging message including information about the MBS service that session start is about to start.

27. A base station, Read the program in memory Receive a paging message sent from the AMF; a processor for executing a process of reading information in the paging message and then paging the UE according to a situation where the base station supports a multicast broadcast feature; a transceiver for transmitting and receiving data under the control of a processor; Including, After reading the information in the paging message, paging the UE according to the situation where the base station supports the multicast broadcast feature includes: When a group paging message including MBS service information that session start is about to start and a paging message including UE ID information are received, A base station that supports a multicast broadcast feature selects the group paging message and sends a paging message containing MBS service information at every paging occasion (PO); or a base station that does not support a multicast broadcast feature selects the paging message and sends a paging message containing only UE ID information at a PO corresponding to a UE ID; Or, When the session start receives a paging message including MBS service information to be started and UE ID information corresponding to the service, A base station that supports multicast broadcast characteristics sends, based on the UE ID information, a paging message including MBS service information in a PO corresponding to the UE ID information, or a paging message including MBS service information and carrying the UE ID information; or A base station that does not support the multicast broadcast feature sends, based on the UE ID information, a paging message including only the UE ID information in a PO corresponding to the UE ID information; Or, When a group paging message containing information about the MBS service that session start is about to start is received, A base station supporting multicast broadcast characteristics sends a paging message including MBS service information in all POs, or sends a paging message including MBS service information, or a paging message including MBS service information and carrying UE ID information, only in POs corresponding to members based on group member information obtained from a core network; or A base station that does not support the multicast broadcast feature requests corresponding UE ID information from the AMF, and then sends a paging message including the UE_ID only in the PO corresponding to the UE ID; a base station.

28. A base station, a base station receiving module for receiving a paging message sent from the AMF; a base station paging module for reading information in the paging message and then paging the UE according to a situation where the base station supports multicast broadcast characteristics; Including, The base station paging module further comprises: When a group paging message including MBS service information that session start is about to start and a paging message including UE ID information are received, A base station that supports a multicast broadcast feature selects the group paging message and sends a paging message containing MBS service information at every paging occasion (PO); or a base station that does not support a multicast broadcast feature selects the paging message and sends a paging message containing only UE ID information at a PO corresponding to a UE ID; Or, When the session start receives a paging message including MBS service information to be started and UE ID information corresponding to the service, A base station that supports multicast broadcast characteristics sends, based on the UE ID information, a paging message including MBS service information in a PO corresponding to the UE ID information, or a paging message including MBS service information and carrying the UE ID information; or A base station that does not support the multicast broadcast feature sends, based on the UE ID information, a paging message including only the UE ID information in a PO corresponding to the UE ID information; Or, When a group paging message containing information about the MBS service that session start is about to start is received, A base station supporting multicast broadcast characteristics sends a paging message including MBS service information in all POs, or sends a paging message including MBS service information, or a paging message including MBS service information and carrying UE ID information, only in POs corresponding to members based on group member information obtained from a core network; or A base station that does not support the multicast broadcast feature requests corresponding UE ID information from the AMF, and then sends a paging message including the UE_ID only in the PO corresponding to the UE ID; a base station.

29. A UE, Read the program in memory receiving a paging message transmitted from a base station; A processor for performing a process of receiving an MBS service after reading information in a paging message according to a situation where the UE supports a multicast broadcast feature; a transceiver for transmitting and receiving data under the control of a processor; Including, If the UE supports the multicast broadcast feature, reading the information in the paging message according to the situation in which the UE supports the multicast broadcast feature includes: A group paging message containing information about an MBS service that a session start is about to start, and a paging message containing information about a user equipment identifier (UE ID), or Reading a paging message containing MBS service information that the session start is about to start and UE ID information corresponding to the MBS service; or Reading a group paging message containing information about the MBS service that the session start is about to start; A UE including:

30. A UE, a UE paging module for receiving a paging message sent from a base station; A UE receiving module for receiving an MBS service after reading information in the paging message according to a situation where the UE supports multicast broadcast characteristics; Including, If the UE supports a multicast broadcast feature, the UE receiving module further comprises: A group paging message containing information about an MBS service that a session start is about to start, and a paging message containing information about a user equipment identifier (UE ID), or Reading a paging message containing MBS service information that the session start is about to start and UE ID information corresponding to the MBS service; or Reading a group paging message containing information about the MBS service that the session start is about to start; A UE including:

31. A computer-readable storage medium having stored thereon a computer program for carrying out the method according to any one of claims 1 to 6.

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