Multicast MCCH receiving method and apparatus

Abstract

The present invention relates to the technical field of communications, and in particular to a multicast MCCH receiving method. The method is executed by a user. The method comprises: receiving configuration information of a multicast MCCH sent by a base station; when a preset multicast MCCH receiving condition is triggered, starting to receive, on the basis of the configuration information of the multicast MCCH, the multicast MCCH sent by the base station, the multicast MCCH comprising configuration information of a target multicast session of a user; and on the basis of the configuration information of the target multicast session, receiving service data of the target multicast session. By means of the technical solution of the present invention, when the multicast MCCH receiving condition is triggered, UE can start to receive, on the basis of the received multicast MCCH configuration information, the multicast MCCH sent by the base station and comprising the configuration information of the target multicast session of the user, and further receive the service data of the target multicast session on the basis of the configuration information of the target multicast session, so that not only the UE is enabled to receive configuration information of a latest target multicast session in time, but also the extra power consumption caused by that the UE continuously monitors and receives un-updated configuration information is avoided.

Description

A multicast MCCH receiving method and device Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a multicast MCCH receiving method and device. Background Art

[0002] With the rapid development of the Internet and the prevalence of large-screen, multi-functional user devices, a large number of mobile data multimedia services and various high-bandwidth multimedia services have emerged. To effectively utilize mobile network resources, 3GPP has proposed multimedia broadcast multicast services. This technology transmits data from a single data source to multiple target user devices, enabling the sharing of network resources and improving network resource utilization. Considering that the MBS service transmission mechanism proposed by the LTE system is completely independent of the unicast service transmission mechanism, independent base stations and a separate networking method are required to transmit and receive MBS services. Therefore, the 5G system defined by 3GPP R17 proposes that base stations can transmit unicast and multicast services simultaneously, thereby enabling the transmission and reception of multicast services using existing base stations.

[0003] However, Release 17 targets a multicast service reception mechanism for UEs in the connected state. A comprehensive, significantly efficient, and widely recognized multicast service reception mechanism for UEs in the RRC_INACTIVE state (also known as the RRC inactive state) has yet to be proposed. Recent conference research and discussions have proposed that the RRC connection release message and the multicast MCCH can be used to carry multicast service configuration information. UEs can receive the multicast service configuration information and, in turn, the service data of multicast services by receiving the RRC connection release message and the multicast MCCH sent by the base station.

[0004] However, during the reception process, the inventors discovered that the latest research still has at least the following problems: the existing reception mechanism does not clearly specify when the UE receives the multicast MCCH, which may lead to asynchrony between the network's update of the multicast MCCH and the UE's reception. For example, the network is updated, but the UE does not receive it and continues to use the invalid multicast service configuration information to receive the multicast service, which will cause service transmission delays and data packet loss. For another example, the network has not been updated, but the UE continues to monitor and receive the configuration information of the multicast service that has not been updated, which will cause additional power consumption of the UE.

[0005] Therefore, the prior art urgently needs a multicast MCCH receiving method and device.

[0006] Summary of the Invention

[0007] In response to the current problem of when a UE receives a multicast MCCH, the present invention provides a multicast MCCH method and apparatus.

[0008] A multicast MCCH reception method is provided, the method being performed by a user and comprising:

[0009] Receive the multicast MCCH configuration information sent by the base station;

[0010] When a preset multicast MCCH reception condition is triggered, starting to receive the multicast MCCH sent by the base station according to the multicast MCCH configuration information, where the multicast MCCH includes the configuration information of the user target multicast session;

[0011] Receive service data of the target multicast session according to the configuration information of the target multicast session.

[0012] Preferably, the user is in RRC_INACTIVE state when receiving the multicast MCCH;

[0013] The target multicast session is a multicast session that can be received by the user in the RRC_INACTIVE state.

[0014] Preferably, the multicast MCCH reception condition includes:

[0015] The user receives multicast MCCH configuration information; and / or

[0016] The user receives an RRC connection release message; and / or

[0017] The user receives an activation message for the target multicast session; and / or

[0018] The user receives preset indication information, where the indication information is used to indicate whether the user needs to obtain configuration information of the target multicast session.

[0019] Preferably, the method further comprises:

[0020] The user receives the multicast MCCH and obtains configuration information of the target multicast session of the user;

[0021] When the preset multicast MCCH stop receiving condition is triggered, the user stops receiving the multicast MCCH, so as to stop receiving the configuration information of the target multicast session of the user.

[0022] Preferably, the multicast MCCH stop reception condition includes:

[0023] The user receives a deactivation message of the target multicast session; and / or

[0024] The user receives indication information, where the indication information is used to indicate whether the user needs to obtain configuration information of the target multicast session.

[0025] Preferably, the process of the user receiving the multicast MCCH configuration information includes:

[0026] Receive a system message or dedicated signaling, and obtain multicast MCCH configuration information carried by the system message or the dedicated signaling.

[0027] Preferably, the process of the user starting to receive the multicast MCCH includes:

[0028] When the user obtains the multicast MCCH configuration information, the user starts to monitor the PDCCH scrambled by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

[0029] Preferably, the process of the user receiving the multicast MCCH includes:

[0030] Monitor the PDCCH scrambled by the C-RNTI, and obtain the RRC connection release message according to the scheduling information in the PDCCH;

[0031] When the user receives the RRC connection release message, the user starts to monitor the PDCCH scrambled by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

[0032] Preferably, the process of the user receiving the multicast MCCH includes:

[0033] When the user receives the activation message of the target multicast session, the user starts to monitor the PDCCH scrambled by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

[0034] Preferably, the activation message of the target multicast session includes a group paging message, and the group paging message is used to instruct users in the RRC_INACTIVE state to receive the target multicast session.

[0035] Preferably, the process of the user stopping receiving the multicast MCCH includes:

[0036] When the user receives the deactivation message of the target multicast session, the user stops receiving the multicast MCCH, or stops receiving the multicast MCCH until the target multicast session is activated, or continues to receive the multicast MCCH to receive or stop receiving the configuration information of the target multicast session.

[0037] Preferably, the deactivation message of the target multicast session includes a group paging message, and the group paging message is used to instruct users in the RRC_INACTIVE state to stop receiving the target multicast session.

[0038] Preferably, the process of the user receiving the multicast MCCH includes:

[0039] When the user receives the indication message, if the indication message instructs the user to obtain the configuration information of the target multicast session, the user begins to monitor the PDCCH scrambled by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session of the user;

[0040] If the instruction message instructs the user to stop acquiring the configuration information of the target multicast session, the user stops receiving the multicast MCCH to stop receiving the configuration information of the target multicast session of the user.

[0041] Preferably, the indication information is in the configuration information corresponding to the target multicast session in the RRC connection release message, or in the configuration information corresponding to the target multicast session in the multicast MCCH;

[0042] The indication information is used to indicate whether the user obtains the configuration information of the target multicast session from the time the indication message is received until the target multicast session is activated, and / or from the time the target multicast session is deactivated until the next activation.

[0043] A multicast MCCH receiving device is provided, the device being executed by a user, and the device comprising:

[0044] A first receiving module is configured to receive configuration information of the multicast MCCH sent by the base station;

[0045] A second receiving module is configured to start receiving a multicast MCCH sent by a base station according to the multicast MCCH configuration information when a preset multicast MCCH reception condition is triggered, where the multicast MCCH includes the configuration information of the user target multicast session;

[0046] The third receiving module is configured to receive service data of the target multicast session according to the configuration information of the target multicast session.

[0047] Preferably, the user is in RRC_INACTIVE state when receiving the multicast MCCH;

[0048] The target multicast session is a multicast session that can be received by the user in the RRC_INACTIVE state.

[0049] Preferably, the multicast MCCH reception condition includes:

[0050] The user receives multicast MCCH configuration information; and / or

[0051] The user receives an RRC connection release message; and / or

[0052] The user receives an activation message for the target multicast session; and / or

[0053] The user receives preset indication information, where the indication information is used to indicate whether the user needs to obtain configuration information of the target multicast session.

[0054] Preferably, the device comprises:

[0055] The receiving stop module is configured to, when a preset multicast MCCH receiving stop condition is triggered, cause the user to stop receiving the multicast MCCH so as to stop receiving the configuration information of the target multicast session of the user.

[0056] Preferably, the multicast MCCH stop reception condition includes:

[0057] The user receives a deactivation message of the target multicast session; and / or

[0058] The user receives indication information, where the indication information is used to indicate whether the user needs to obtain configuration information of the target multicast session.

[0059] Preferably, the first receiving module is configured to receive a system message or proprietary signaling, and obtain multicast MCCH configuration information carried by the system message or the proprietary signaling.

[0060] Preferably, the second receiving module includes:

[0061] When the user obtains the multicast MCCH configuration information, the user starts to monitor the PDCCH scrambled by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

[0062] Preferably, the second receiving module includes:

[0063] Monitor the PDCCH scrambled by the C-RNTI, and obtain the RRC connection release message according to the scheduling information in the PDCCH;

[0064] When the user receives the RRC connection release message, the user starts to monitor the PDCCH scrambled by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

[0065] Preferably, the second receiving module includes:

[0066] When the user receives the activation message of the target multicast session, the user starts to monitor the PDCCH scrambled by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

[0067] Preferably, the activation message of the target multicast session includes a group paging message, and the group paging message is used to instruct users in the RRC_INACTIVE state to receive the target multicast session.

[0068] Preferably, the stop receiving module includes:

[0069] When the user receives the deactivation message of the target multicast session, the user stops receiving the multicast MCCH, or stops receiving the multicast MCCH until the target multicast session is activated, or continues to receive the multicast MCCH to receive or stop receiving the configuration information of the target multicast session.

[0070] Preferably, the deactivation message of the target multicast session includes a group paging message, and the group paging message is used to instruct users in the RRC_INACTIVE state to stop receiving the target multicast session.

[0071] Preferably, the second receiving module includes:

[0072] When the user receives the indication message, if the indication message instructs the user to obtain the configuration information of the target multicast session, the user begins to monitor the PDCCH scrambled by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session of the user;

[0073] If the instruction message instructs the user to stop acquiring the configuration information of the target multicast session, the user stops receiving the multicast MCCH to stop receiving the configuration information of the target multicast session of the user.

[0074] Preferably, the indication information is in the configuration information corresponding to the target multicast session in the RRC connection release message, or in the configuration information corresponding to the target multicast session in the multicast MCCH;

[0075] The indication information is used to indicate whether the user obtains the configuration information of the target multicast session from the time the indication message is received until the target multicast session is activated, and / or from the time the target multicast session is deactivated until the next activation.

[0076] A terminal is provided, comprising a processor and a memory, wherein the memory is configured to store a computer program, and when the computer program is executed by the processor, the processor implements any one of the methods described above.

[0077] A computer-readable storage medium is provided, comprising a computer program. When the computer program is executed by a processor, the processor is enabled to implement any of the methods described above.

[0078] A terminal is provided, comprising a processor and a memory, wherein the memory is configured to store a computer program, and when the computer program is executed by the processor, the processor implements the multicast MCCH receiving method for receiving indication information.

[0079] The beneficial effects of the present invention are as follows: a multicast MCCH reception condition is preset, and when the multicast MCCH reception condition is triggered, the UE can start to receive the multicast MCCH sent by the base station and containing the configuration information of the user's target multicast session according to the received multicast MCCH configuration information, and then receive the service data of the target multicast session according to the configuration information of the target multicast session. This can enable the UE to receive the latest configuration information of the target multicast session in a timely manner, and can avoid additional power consumption caused by the UE continuously monitoring and receiving unupdated configuration information. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] FIG1 is a schematic diagram of a process for receiving a multicast MCCH in one embodiment of the present invention;

[0081] FIG2 is a schematic structural diagram of a receiving device in one embodiment of the present invention. DETAILED DESCRIPTION

[0082] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0083] The present invention provides a multicast MCCH receiving method and device, which solve the problems in the prior art. By presetting a multicast MCCH receiving condition, when the multicast MCCH receiving condition is triggered, the UE can start receiving the multicast MCCH issued by the base station according to the received multicast MCCH configuration information. The multicast MCCH contains the configuration information of the user's target multicast session. Then, the service data of the target multicast session is received based on the configuration information of the target multicast session. This can enable the UE to receive the latest configuration information of the target multicast session in a timely manner, and can avoid the UE from continuously monitoring and generating additional power consumption.

[0084] First, a multicast MCCH receiving method is provided. The method is performed by a user, as shown in FIG1 , and includes:

[0085] Receive configuration information of multicast MCCH;

[0086] When the preset multicast MCCH reception condition is triggered, the multicast MCCH sent by the base station is received according to the multicast MCCH configuration information. The multicast MCCH contains the configuration information of the user's target multicast session.

[0087] Receive service data of the target multicast session according to the configuration information of the target multicast session.

[0088] Specifically, the base station sends the configuration information and multicast MCCH of multicast MCCH (i.e., Multicast MCCH). Correspondingly, after the user receives the multicast MCCH configuration information sent by the base station, when the preset multicast MCCH reception condition is triggered, it will start to receive the multicast MCCH sent by the base station according to the multicast MCCH configuration information to obtain the configuration information of the target multicast session carried by the multicast MCCH, and then receive the service data of the target multicast session according to the configuration information of the target multicast session.

[0089] It should be noted that this patent mainly solves the technical problem of when the user starts to receive the multicast MCCH, that is, to clarify the time when the user starts to receive the multicast MCCH, but it does not mean that the base station will not send the multicast MCCH before that. In actual application scenarios, the base station is likely to start sending the multicast MCCH after sending the multicast MCCH configuration information. This patent takes into account that if the user is always in the receiving state, additional power consumption will be generated. If the updated target multicast session configuration information contained in the multicast MCCH is not received in time, it will cause data packet loss and other problems. Therefore, the multicast MCCH reception condition is set. After receiving the multicast MCCH configuration information, when the multicast MCCH reception condition is triggered, the multicast MCCH will start to be received according to the multicast MCCH configuration information, thereby avoiding problems such as additional power consumption and data packet loss.

[0090] Among them, the base station usually sends multicast MCCH configuration information first and then sends multicast MCCH. However, this patent does not limit the order between the base station sending multicast MCCH configuration information and sending multicast MCCH. The base station can also send multicast MCCH configuration and multicast MCCH at the same time.

[0091] The multicast MCCH configuration information may include the multicast MCCH repetition period, the multicast MCCH modification period, the first subframe, the offset, and the possibly scheduled activation period. For example, when a multicast MCCH reception condition is triggered, if the user is in the activation period of the multicast MCCH repetition period, the user may immediately start monitoring the multicast MCCH until the activation period ends. If the user is in the inactive period of the multicast MCCH repetition period, the user may wait until the activation period ends before starting to monitor the multicast MCCH. The user receives a multicast MCCH change notification and, based on the result of the change notification, decides whether to monitor and receive the multicast MCCH in the next multicast MCCH modification period.

[0092] The multicast MCCH reception condition can be one condition or multiple conditions. When the UE sets the multicast MCCH reception condition, different conditions can be set for different UEs, or a unified setting can be set. The multicast MCCH reception condition is written into the communication protocol and burned into the chip used by the UE, so that all UEs shipped from the factory can start receiving MCCH when the multicast MCCH reception condition is triggered.

[0093] The target multicast session can be a single multicast session or multiple multicast sessions. When the UE is in the RRC inactive state, the target multicast session of the UE refers to the multicast session that the UE is interested in, wants to receive, and is able to receive while in the RRC inactive state. In practical applications, the target multicast session is often also called the interested multicast session.

[0094] For example, a multicast session MBS1 exists in the current cell. User UE1 is in RRC_INACTIVE mode and only wants to receive MBS1. In other words, MBS1 is UE1's target multicast session. The base station sends an RRC connection release message (also called an RRC connection release message) that carries MBS1's configuration information PTM configuration1. The base station also continues to send multicast MCCHs that carry MBS1's configuration information PTM configuration1. Based on the existing technology, UE1 will continue to monitor the multicast MCCH and receive any unupdated multicast MCCHs. However, using the technical solution of this patent, UE1 can trigger the multicast MCCH reception condition. When MBS3 is activated, the indication information indicates reception. If the MBS3 configuration information PTM configuration3 is updated, UE1 can start receiving the updated multicast MCCH, thereby obtaining MBS3 configuration information PTM configuration3 and receiving MBS3 service data. Compared with the existing technology, the technical solution of this patent can prevent UE1 from constantly monitoring any unupdated multicast MCCHs, thereby avoiding additional power consumption by UE1.

[0095] For example, there is a multicast session MBS1 in the current cell, and user UE1 is in RRC_INACTIVE and only wants to receive MBS1. In other words, MBS1 is the target multicast session of UE1. After the base station sends the RRC connection release message, the multicast MCCH is updated, and the configuration information PTM configuration1 of MBS1 carried by the multicast MCCH is updated. UE1 starts to receive multicast MCCH according to the multicast MCCH configuration information after MBS1. Then, after the multicast MCCH is updated and before MBS1 is activated, UE1 will continue to use the invalid configuration information PTM configuration1 of MBS1 to receive the service data of MBS1. Compared with the prior art, the technical solution of this patent allows UE1 to start receiving the updated multicast MCCH after the multicast MCCH is updated, and then obtain the updated configuration information PTM configuration3 of MBS3. Compared with the existing technology, the technical solution of this patent can receive the service data of MBS3 with the updated configuration information. For UE1, when the multicast MCCH is updated, it can avoid the situation where UE1 fails to receive the updated multicast MCCH in time and continues to use the configuration information of the invalid target multicast session to receive the service data of the target multicast session, thereby avoiding the situation where UE1 experiences service data transmission delay and data packet loss.

[0096] In a preferred embodiment of the present invention, when a user receives a multicast MCCH, the user is in an RRC_INACTIVE state.

[0097] In a preferred embodiment of the present invention, the target multicast session is a multicast session that can be received by users in the RRC_INACTIVE state.

[0098] Specifically, after the user receives the multicast MCCH configuration information, the user in RRC_INACTIVE will start to receive the multicast MCCH carrying the configuration information of the target multicast session after triggering the multicast MCCH reception condition, and then obtain the configuration information of the target multicast session based on the received multicast MCCH, and receive the service data of the target multicast session based on the configuration information, so as to achieve reception of the target multicast session of interest in the RRC_INACTIVE state.

[0099] In a preferred embodiment of the present invention, the multicast MCCH reception condition includes:

[0100] The user receives the multicast MCCH configuration information; and / or

[0101] The user receives an RRC connection release message; and / or

[0102] The user receives an activation message for the target multicast session; and / or

[0103] The user receives preset indication information, where the indication information is used to indicate whether the user needs to obtain configuration information of a target multicast session.

[0104] Specifically, when the multicast MCCH reception condition is triggered, the user will begin to receive the multicast MCCH sent by the base station, and then obtain the configuration information of the target multicast session, thereby obtaining the service data of the target multicast session based on the configuration information of the target multicast session. The preset multicast MCCH reception condition can be that the user receives the multicast MCCH configuration information; or the user receives an RRC connection release message that includes Suspend; or the user receives an activation message for the target multicast session; or the user receives preset indication information that indicates that the user needs to obtain the configuration information of the target multicast session; or other reception conditions, or any combination of the above reception conditions.

[0105] In a preferred embodiment of the present invention, the method further comprises:

[0106] The user receives the multicast MCCH and obtains the configuration information of the user's target multicast session;

[0107] When the preset multicast MCCH stop receiving condition is triggered, the user stops receiving the multicast MCCH, so as to stop receiving the configuration information of the user's target multicast session.

[0108] Specifically, the configuration information of the multicast MCCH sent by the base station is received. When the preset multicast MCCH reception condition is triggered, the user starts to receive the multicast MCCH sent by the base station according to the multicast MCCH configuration information, and then obtains the configuration information of the target multicast session contained in the multicast MCCH. When the preset multicast MCCH stop reception condition is triggered, the user stops receiving the multicast MCCH, and then stops receiving the configuration information of the user's target multicast session.

[0109] In a preferred embodiment of the present invention, the multicast MCCH stop reception condition includes:

[0110] The user receives a deactivation message for the target multicast session; and / or

[0111] The user receives the indication information, where the indication information is used to indicate whether the user needs to obtain the configuration information of the target multicast session.

[0112] Specifically, when the multicast MCCH stop reception condition is triggered, the user will stop receiving the multicast MCCH sent by the base station and will stop obtaining the configuration information of the target multicast session. The preset multicast MCCH stop reception condition can be: the user receiving a deactivation message for the target multicast session; or the user receiving an indication indicating that the user does not need to obtain the configuration information of the target multicast session; or other stop reception conditions, or any combination of the above stop reception conditions.

[0113] In a preferred embodiment of the present invention, the process of a user receiving multicast MCCH configuration information includes:

[0114] Receive system messages or proprietary signaling, and obtain multicast MCCH configuration information carried by the system messages or proprietary signaling.

[0115] Specifically, the user can monitor the PDCCH scrambled by the C-RNTI, and then receive dedicated signaling based on the scheduling information in the PDCCH to obtain the multicast MCCH configuration information carried by the dedicated signaling. The user can also receive system messages to obtain the multicast MCCH configuration information carried by the system messages. The system message here can be SIB20.

[0116] In a preferred embodiment of the present invention, the process of a user starting to receive a multicast MCCH includes:

[0117] When the user obtains the multicast MCCH configuration information, it starts to monitor the PDCCH scrambled by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

[0118] Specifically, the network device sends multicast MCCH configuration information and multicast MCCH. When the user receives the multicast MCCH configuration information, it will start to monitor the PDCCH scrambled by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receive the multicast MCCH according to the scheduling information in the PDCCH, and then obtain the configuration information of the target multicast session of the user carried by the multicast MCCH, so as to receive the service data of the target multicast session according to the configuration information of the target multicast session of the user.

[0119] In other words, in this embodiment, the user's reception of the multicast MCCH configuration information is the multicast MCCH reception condition. When the user obtains the multicast MCCH configuration information, the multicast MCCH reception condition is actually triggered, and thus the user starts to receive the multicast MCCH.

[0120] In a preferred embodiment of the present invention, the process of a user receiving a multicast MCCH includes:

[0121] Monitor the PDCCH scrambled by the C-RNTI and obtain the RRC connection release message based on the scheduling information in the PDCCH;

[0122] When the user receives the RRC connection release message, it starts to monitor the PDCCH scrambled by a specific radio network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

[0123] Specifically, the network device sends multicast MCCH configuration information and multicast MCCH. After the user receives the multicast MCCH configuration information, it uses C-RNTI to monitor the PDCCH encrypted by C-RNTI, and will obtain the RRC connection release message according to the scheduling information in the PDCCH. When the user receives the RRC connection release message, the user switches from the RRC connection state to the RRC inactive state, and will start to monitor the PDCCH encrypted by a specific wireless network temporary identifier according to the multicast MCCH configuration information. According to the scheduling information in the PDCCH, it receives the multicast MCCH, and then obtains the configuration information of the user's target multicast session carried by the multicast MCCH, so as to receive the service data of the target multicast session according to the configuration information of the user's target multicast session.

[0124] In other words, in this embodiment, the user's reception of the RRC connection release message is a condition for receiving the multicast MCCH. When the user obtains the RRC connection release message, the multicast MCCH reception condition is actually triggered, and thus the user starts to receive the multicast MCCH.

[0125] In a preferred embodiment of the present invention, the process of a user receiving a multicast MCCH includes:

[0126] When the user receives the activation message of the target multicast session, the user starts to monitor the PDCCH scrambled by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

[0127] Specifically, the network device sends multicast MCCH configuration information and multicast MCCH. After the user receives the multicast MCCH configuration information, if the user receives an activation message of the target multicast session, it starts to monitor the PDCCH scrambled by a specific wireless network temporary identifier according to the multicast MCCH configuration information, receives the multicast MCCH according to the scheduling information in the PDCCH, and then obtains the configuration information of the user's target multicast session carried by the multicast MCCH, so as to receive the service data of the target multicast session according to the configuration information of the user's target multicast session.

[0128] In other words, in this embodiment, the user's reception of the activation message of the target multicast session is the reception condition of the multicast MCCH. When the user obtains the activation message of the target multicast session, it actually triggers the reception condition of the multicast MCCH, and thus the user starts to receive the multicast MCCH.

[0129] In a preferred embodiment of the present invention, the activation message of the target multicast session includes a group paging message, and the group paging message is used to instruct users in the RRC_INACTIVE state to receive the target multicast session.

[0130] Specifically, the user can monitor the PDCCH encrypted by the P-RNTI, and obtain the activation message of the target multicast session according to the scheduling information in the PDCCH. After the target multicast session is activated, if the user receives the activation message of the target multicast session, it starts to monitor the PDCCH encrypted by a specific wireless network temporary identifier according to the multicast MCCH configuration information, receives the multicast MCCH according to the scheduling information in the PDCCH, and then obtains the configuration information of the user's target multicast session carried by the multicast MCCH, so as to receive the service data of the target multicast session according to the configuration information of the user's target multicast session.

[0131] For example, the current cell already has three multicast sessions MBS1, MBS2, and MBS3. MBS1 corresponds to TMGI1, MBS2 corresponds to TMGI2, and MBS3 corresponds to TMGI3. User UE1 is in RRC_INACTIVE state and only wants to receive MBS3. In other words, MBS3 is UE1's target multicast session. The base station continues to send multicast MCCH. The group paging message indicates that the multicast sessions corresponding to TMGI1 and TMGI2 are activated, that is, MBS1 and MBS2 are activated, but MBS3 is never activated. UE1 never receives multicast MCCH. If the group paging message indicates that the multicast session corresponding to TMGI3 is activated, that is, UE1 is in RRC_INACTIVE state and can receive MBS3. After MBS3 is activated, UE1 starts to receive multicast MCCH according to the multicast MCCH configuration information, and then obtains the configuration information PTM configuration3 of MBS3 carried by the multicast MCCH, and receives the corresponding MBS3 service data with PTM configuration3.

[0132] Furthermore, the user receives the activation message of the target multicast session and starts to receive the multicast MCCH. The activation message of the target multicast session can be a group paging message for instructing the user in the RRC_INACTIVE state to receive the target multicast session, or can be other messages.

[0133] In a preferred embodiment of the present invention, the process of a user stopping receiving a multicast MCCH includes:

[0134] When the user receives the deactivation message of the target multicast session, the user stops receiving the multicast MCCH, or stops receiving the multicast MCCH until the target multicast session is activated, or continues receiving the multicast MCCH to receive or stop receiving the configuration information of the target multicast session.

[0135] Specifically, after the user receives the multicast MCCH, when the user receives the deactivation message of the target multicast session, the deactivation message is scheduled by the PDCCH encrypted by the P-RNTI, and the target multicast session is switched from the activated state to the deactivated state. The user can stop receiving the multicast MCCH to stop receiving the configuration information of the target multicast session; the user can stop receiving the multicast MCCH until the target multicast session is activated to stop receiving the configuration information of the target multicast session until the target multicast session is activated and continue to receive the multicast MCCH; the user can also continue to receive the multicast MCCH to continue receiving the configuration information of the target multicast session.

[0136] In other words, in this embodiment, the user receiving the deactivation message of the target multicast session is the condition for stopping receiving the multicast MCCH. When the user obtains the deactivation message of the target multicast session, it actually triggers the condition for stopping receiving the multicast MCCH.

[0137] It should be noted that, in this embodiment, the condition for a user to receive the multicast MCCH may be receiving an activation message for a target multicast session. For example, after the user receives the multicast MCCH configuration information, when the user receives the activation message for the target multicast session, the user begins to receive the multicast MCCH according to the multicast MCCH configuration information, obtains the configuration information of the target multicast session carried by the multicast MCCH, and receives the service data of the target multicast session according to the configuration information of the target multicast session. If the user receives a deactivation message for the target multicast session, the user will stop receiving the multicast MCCH and thus stop receiving the configuration information for the target multicast session. The condition for a user to receive the multicast MCCH may also be receiving an RRC connection release message, or even any of the reception conditions described above.

[0138] In a preferred embodiment of the present invention, the deactivation message of the target multicast session includes a group paging message, and the group paging message is used to instruct users in the RRC_INACTIVE state to stop receiving the target multicast session.

[0139] Specifically, the user receives the deactivation message of the target multicast session and stops receiving the multicast MCCH. The activation message of the target multicast session can be a group paging message for instructing the user in the RRC_INACTIVE state to stop receiving the target multicast session, or other messages.

[0140] For example, there are three multicast sessions MBS1, MBS2 and MBS3 in the current cell. MBS1 corresponds to TMGI1, MBS2 corresponds to TMGl2, MBS3 corresponds to TMGI3, and user UE1 is in RRC_INACTIVE state and only wants to receive MBS3. In other words, MBS3 is UE1's target multicast session, and the base station continues to send multicast MCCH. If the group paging message indicates that the multicast sessions corresponding to TMGI1 and TMGI2 are activated, and the multicast session corresponding to TMGI3 is deactivated, MBS1 and MBS2 are activated, and MBS3 is deactivated, that is, UE1 is in RRC_INACTIVE state and can stop receiving MBS3. UE1 will stop receiving multicast MCCH, and also stop receiving the corresponding configuration information of MBS3.

[0141] In a preferred embodiment of the present invention, the process of a user receiving a multicast MCCH includes:

[0142] When the user receives the indication message, if the indication message instructs the user to obtain the configuration information of the target multicast session, the user starts to monitor the PDCCH scrambled by a specific radio network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the user's target multicast session;

[0143] If the instruction message instructs the user to stop acquiring the configuration information of the target multicast session, the user stops receiving the multicast MCCH to stop receiving the configuration information of the user's target multicast session.

[0144] Specifically, the network device sends multicast MCCH configuration information and multicast MCCH. After the user receives the multicast MCCH configuration information, it receives indication information. If the indication message instructs the user to obtain the configuration information of the target multicast session, the user will start to monitor the PDCCH scrambled by a specific wireless network temporary identifier according to the multicast MCCH configuration information, receive the multicast MCCH according to the scheduling information in the PDCCH, so as to obtain the configuration information of the target multicast session of the user carried by the multicast MCCH, and receive the service data of the target multicast session according to the configuration information of the target multicast session of the user.

[0145] In other words, in this embodiment, the indication information received by the user instructing the user to obtain the configuration information of the target multicast session is the reception condition of the multicast MCCH. When the user obtains the indication information, it actually triggers the reception condition of the multicast MCCH, and thus the user starts to receive the multicast MCCH.

[0146] In one embodiment of the present invention, the bits of the indication information are assigned a value of 0 or 1 to respectively indicate that the user obtains the configuration information of the target multicast session or that the user does not obtain the configuration information of the target multicast session.

[0147] The bit assignment of the indication information can adopt the first assignment method, and the assignment method is:

[0148] When the value is 0, it instructs the user to obtain the configuration information of the target multicast session;

[0149] When the value is 1, the user is instructed not to obtain the configuration information of the target multicast session.

[0150] Accordingly, after the user receives the multicast MCCH configuration information, when the user receives the indication information, the indication information corresponds to the bit of the target multicast session and is assigned a value of "0", instructing the user to obtain the configuration information of the target multicast session. The user starts to receive the multicast MCCH according to the multicast MCCH configuration information, and then obtains the configuration information of the target multicast session carried by the multicast MCCH, and then receives the target multicast session according to the configuration information of the target multicast session.

[0151] The second assignment method can be used to assign values ​​to the bits in the indication information. The assignment method is:

[0152] When the value is 0, it indicates that the user does not obtain the configuration information of the target multicast session;

[0153] When the value is 1, it instructs the user to obtain the configuration information of the target multicast session.

[0154] Accordingly, after the user receives the multicast MCCH configuration information, when the user receives the indication information, the indication information corresponds to the bit of the target multicast session and is assigned a value of "1", instructing the user to obtain the configuration information of the target multicast session. The user starts to receive the multicast MCCH according to the multicast MCCH configuration information, and then obtains the configuration information of the target multicast session carried by the multicast MCCH, and then receives the target multicast session according to the configuration information of the target multicast session.

[0155] The indication information is in the configuration information of the target multicast session, and the corresponding data structure can be:

[0156] MBS-SessionInfo is the configuration information of the target multicast session, Multicast-info is the indication information, and multicast-info is the value assigned to the indication information, which can be 0 or 1. At different stages of technical research, the information contained in the configuration information of the target multicast session may change, such as the aforementioned mrb-ListBroadcast, mtch-SchedulingInfo, etc. This patent mainly proposes that the configuration information of the target multicast session include indication information, and does not additionally limit other information contained in the configuration information of the target multicast session.

[0157] In a preferred embodiment of the present invention, the indication information is in the configuration information corresponding to the target multicast session of the RRC connection release message, and the indication information can be used to indicate whether the user obtains the configuration information of the target multicast session from the time the indication message is received until the target multicast session is activated, and / or, from the time the target multicast session is deactivated until the next activation.

[0158] Specifically, the indication information is in the configuration information corresponding to the target multicast session in the RRC connection release message. After the user receives the RRC connection release message sent by the base station, it switches from the RRC connection state to the RRC inactive state, obtains the configuration information corresponding to the target multicast session in the RRC connection release message and the indication message contained therein, and the UE performs initial configuration of the target multicast session with the configuration information of the target multicast session. If the obtained indication message instructs the user to obtain the configuration information of the target multicast session, the UE will start to receive the multicast MCCH according to the multicast MCCH configuration information, and then obtain the configuration information of the target multicast session carried by the multicast MCCH, reconfigure the target multicast session, and receive the service data of the target multicast session with the updated reconfiguration; if the obtained indication message instructs the user not to obtain the configuration information of the target multicast session, the UE will not start to receive the multicast MCCH according to the multicast MCCH configuration information, and receive the service data of the target multicast session with the existing configuration.

[0159] The indication information may be used to indicate whether the user obtains the configuration information of the target multicast session from the time the indication message is received until the target multicast session is activated. That is, when the user receives an RRC connection release message and obtains the indication information carried in the RRC connection release message, if the indication information instructs the user to obtain the configuration information of the target multicast session, the user will begin to receive the multicast MCCH according to the multicast MCCH configuration information from the time the indication message is received until the target multicast session is activated; if the indication information instructs the user not to obtain the configuration information of the target multicast session, the user will not receive the multicast MCCH from the time the indication message is received until the target multicast session is activated.

[0160] Among them, the indication information can be used to indicate whether the user obtains the configuration information of the target multicast session from the deactivation of the target multicast session to the next activation. When the user receives the RRC connection release message, the user obtains the indication information carried in the RRC connection release message. If the indication information instructs the user to obtain the configuration information of the target multicast session, the user will start to receive the multicast MCCH according to the multicast MCCH configuration information during the period from the deactivation of the target multicast session to the next activation. That is, after the target multicast session is activated, the user will receive the target multicast session with the current configuration information. When the target multicast session is deactivated, the user starts to receive the multicast MCCH according to the multicast MCCH configuration information, and obtains the configuration information of the target multicast session carried by the multicast MCCH to update the configuration of the target multicast session; if the indication information instructs the user not to obtain the configuration information of the target multicast session, the user will not receive the multicast MCCH from the deactivation of the target multicast session until the next activation, nor will the configuration of the target multicast session be updated.

[0161] It should be noted that the target multicast session deactivation until the next activation here may include the period during which each target multicast session is converted from deactivation to activation. That is, the indication information may indicate whether the user obtains the configuration information of the target multicast session from the current target multicast session deactivation until the next activation, and / or the next target multicast session deactivation until the next next activation, and / or the next next target multicast session deactivation until the next next next activation, and / or any target multicast session deactivation until the subsequent activation.

[0162] In a preferred embodiment of the present invention, the indication information may also be in the configuration information corresponding to the target multicast session in the multicast MCCH, used to indicate whether the user obtains the configuration information of the target multicast session from the time the indication message is received until the target multicast session is activated, and / or from the time the target multicast session is deactivated until the next activation.

[0163] Specifically, the indication information is in the configuration information corresponding to the target multicast session in the multicast MCCH. If the user receives the multicast MCCH, it obtains the indication information in the target multicast session configuration information carried in the multicast MCCH. If the obtained indication message instructs the user to obtain the configuration information of the target multicast session, the UE will start to receive the multicast MCCH according to the multicast MCCH configuration information, and then obtain the configuration information of the target multicast session carried by the multicast MCCH, reconfigure the target multicast session, and receive the service data of the target multicast session with the updated reconfiguration; if the obtained indication message instructs the user not to obtain the configuration information of the target multicast session, the UE will not receive the multicast MCCH, and receive the service data of the target multicast session with the existing configuration.

[0164] The indication information may be used to indicate whether the user obtains the configuration information of the target multicast session from the time the indication message is received until the target multicast session is activated. That is, when the user receives a multicast MCCH and obtains the indication information carried in the multicast MCCH, if the indication information instructs the user to obtain the configuration information of the target multicast session, the user will begin to receive the multicast MCCH according to the multicast MCCH configuration information from the time the indication message is received until the target multicast session is activated; if the indication information instructs the user not to obtain the configuration information of the target multicast session, the user will not receive the multicast MCCH from the time the indication message is received until the target multicast session is activated.

[0165] Among them, the indication information can be used to indicate whether the user obtains the configuration information of the target multicast session from the deactivation of the target multicast session to the next activation. When the user receives the multicast MCCH, the user obtains the indication information carried in the multicast MCCH. If the indication information instructs the user to obtain the configuration information of the target multicast session, the user will start to receive the multicast MCCH according to the multicast MCCH configuration information during the period from the deactivation of the target multicast session to the next activation. That is, after the target multicast session is activated, the user will receive the target multicast session with the current configuration information. When the target multicast session is deactivated, the user starts to receive the multicast MCCH according to the multicast MCCH configuration information, and obtains the configuration information of the target multicast session carried by the multicast MCCH to update the configuration of the target multicast session; if the indication information instructs the user not to obtain the configuration information of the target multicast session, the user will not receive the multicast MCCH from the deactivation of the target multicast session until the next activation, nor will the configuration of the target multicast session be updated.

[0166] It should be noted that the target multicast session deactivation until the next activation here may include the period during which each target multicast session is converted from deactivation to activation. That is, the indication information may indicate whether the user obtains the configuration information of the target multicast session from the current target multicast session deactivation until the next activation, and / or the next target multicast session deactivation until the next next activation, and / or the next next target multicast session deactivation until the next next next activation, and / or any target multicast session deactivation until the subsequent activation.

[0167] It should be noted that the indication information can be updated, that is, the value of the indication information corresponding to the same target multicast session can be changed. The value of the indication information in the multicast MCCH received by the user at different times can overwrite the value of the indication information received last time. In fact, the user will receive or not receive the multicast MCCH according to the latest received indication information.

[0168] For example, a user receives an RRC connection release message, and the configuration information of the target multicast session in the RRC connection release message carries indication information. If the indication information indicates that from the receipt of the indication message until the activation of the target multicast session, and from the deactivation of the target multicast until the next activation, the user obtains the configuration information of the target multicast session, that is, the user receives the indication message and starts to receive the multicast MCCH according to the multicast MCCH configuration information, and obtains the configuration information of the target multicast session carried in the multicast MCCH. After the target multicast session is activated, the user is used to receive the service data of the target multicast session with the configuration information. After the target multicast session is activated, the user always receives the multicast MCCH, and the indication information in the multicast MCCH indicates that from the deactivation of the target multicast until the next activation, the user does not obtain the configuration information of the target multicast session, which is equivalent to an update of the indication information. Therefore, when the target multicast session is deactivated, the user will not receive the multicast MCCH according to the latest indication information.

[0169] For another example, a user receives a first multicast MCCH, and the configuration information of the target multicast session carried by the first multicast MCCH carries indication information. If the indication information indicates that from the receipt of the indication message until the activation of the target multicast session, and from the deactivation of the target multicast until the next activation, the user obtains the configuration information of the target multicast session, that is, the user receives the indication message and starts to receive the second multicast MCCH according to the multicast MCCH configuration information, obtains the configuration information of the target multicast session carried in the second multicast MCCH, and after the target multicast session is activated, it is used to receive the service data of the target multicast session with the configuration information. After the target multicast session is activated, the user always receives the third multicast MCCH, and the indication information in the third multicast MCCH indicates that from the subsequent deactivation of the target multicast session until the next activation, the user does not obtain the configuration information of the target multicast session, which is equivalent to an update of the indication information. Therefore, the target multicast session is deactivated until the next activation, and the user does not receive the multicast MCCH. The first multicast MCCH, the second multicast MCCH, and the third multicast MCCH mentioned here are only used to distinguish the multicast MCCHs received by users at different times.

[0170] A multicast MCCH receiving device is provided. The device is executed by a user, as shown in FIG2 , and includes:

[0171] The first receiving module 1 is configured to receive configuration information of the multicast MCCH sent by the base station;

[0172] The second receiving module 2 is configured to start receiving the multicast MCCH sent by the base station according to the multicast MCCH configuration information when the preset multicast MCCH reception condition is triggered, where the multicast MCCH includes the configuration information of the user target multicast session;

[0173] The third receiving module 3 is configured to receive service data of the target multicast session according to the configuration information of the target multicast session.

[0174] In a preferred embodiment of the present invention, when a user receives a multicast MCCH, the user is in the RRC_INACTIVE state;

[0175] The target multicast session is a multicast session that can be received by users in the RRC_INACTIVE state.

[0176] In a preferred embodiment of the present invention, the multicast MCCH reception condition includes:

[0177] The user receives the multicast MCCH configuration information; and / or

[0178] The user receives an RRC connection release message; and / or

[0179] The user receives an activation message for the target multicast session; and / or

[0180] The user receives preset indication information, where the indication information is used to indicate whether the user needs to obtain configuration information of a target multicast session.

[0181] In a preferred embodiment of the present invention, the device comprises:

[0182] The receiving stop module is configured to, when a preset multicast MCCH receiving stop condition is triggered, enable the user to stop receiving the multicast MCCH so as to stop receiving the configuration information of the user's target multicast session.

[0183] In a preferred embodiment of the present invention, the multicast MCCH stop reception condition includes:

[0184] The user receives a deactivation message for the target multicast session; and / or

[0185] The user receives the indication information, where the indication information is used to indicate whether the user needs to obtain the configuration information of the target multicast session.

[0186] In a preferred embodiment of the present invention, the first receiving module is configured to receive a system message or a dedicated signaling, and obtain multicast MCCH configuration information carried by the system message or the dedicated signaling.

[0187] In a preferred embodiment of the present invention, the second receiving module includes:

[0188] When the user obtains the multicast MCCH configuration information, the user starts to monitor the PDCCH scrambled by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

[0189] In a preferred embodiment of the present invention, the second receiving module includes:

[0190] Monitor the PDCCH scrambled by the C-RNTI and obtain the RRC connection release message based on the scheduling information in the PDCCH;

[0191] When the user receives the RRC connection release message, it starts to monitor the PDCCH scrambled by a specific radio network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

[0192] In a preferred embodiment of the present invention, the second receiving module includes:

[0193] When the user receives the activation message of the target multicast session, the user starts to monitor the PDCCH scrambled by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

[0194] In a preferred embodiment of the present invention, the activation message of the target multicast session includes a group paging message, and the group paging message is used to instruct users in the RRC_INACTIVE state to receive the target multicast session.

[0195] In a preferred embodiment of the present invention, the stopping receiving module includes:

[0196] When the user receives the deactivation message of the target multicast session, the user stops receiving the multicast MCCH, or stops receiving the multicast MCCH until the target multicast session is activated, or continues receiving the multicast MCCH to receive or stop receiving the configuration information of the target multicast session.

[0197] In a preferred embodiment of the present invention, the deactivation message of the target multicast session includes a group paging message, and the group paging message is used to instruct users in the RRC_INACTIVE state to stop receiving the target multicast session.

[0198] In a preferred embodiment of the present invention, the second receiving module includes:

[0199] When the user receives the indication message, if the indication message instructs the user to obtain the configuration information of the target multicast session, the user starts to monitor the PDCCH scrambled by a specific radio network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the user's target multicast session;

[0200] If the instruction message instructs the user to stop acquiring the configuration information of the target multicast session, the user stops receiving the multicast MCCH to stop receiving the configuration information of the user's target multicast session.

[0201] In a preferred embodiment of the present invention, the indication information is in the configuration information corresponding to the target multicast session in the RRC connection release message, or in the configuration information corresponding to the target multicast session in the multicast MCCH; it is used to indicate whether the user obtains the configuration information of the target multicast session from the time the indication message is received until the target multicast session is activated, and / or, from the time the target multicast session is deactivated until the next activation.

[0202] The present invention also provides a base station, comprising a processor and a memory, wherein the memory is configured to store a computer program, and when the computer program is executed by the processor, the processor implements the multicast configuration indication method for sending indication information as described above.

[0203] The present invention also provides a terminal, comprising a processor and a memory, wherein the memory is configured to store a computer program, and when the computer program is executed by the processor, the processor implements the multicast configuration indication method for receiving indication information.

[0204] The present invention also provides a computer-readable storage medium comprising a computer program, wherein when the computer program is executed by a processor, the processor is enabled to implement any one of the methods.

[0205] Based on practical applications, the following specific embodiments are provided:

[0206] Example 1:

[0207] When the UE receives the configuration information of the multicast MCCH (also referred to as Multicast MCCH), it starts to receive the Multicast MCCH according to the configuration information of the Multicast MCCH and obtains the configuration information of one or more target multicast sessions.

[0208] Optionally, the configuration information of the Multicast MCCH may be sent via a system message (also referred to as multicast SIB) or dedicated signaling (also referred to as dedicated signaling).

[0209] Optionally, at this time, the target multicast session is in an activated or deactivated state.

[0210] Optionally, at this time, the UE is in RRC_INACTIVE or RRC_CONNECTED state.

[0211] Optionally, if an RRC connection release message has been received at this time, the RRC connection release message may include or not include the configuration information of the target multicast session.

[0212] Example 2:

[0213] When the UE receives the RRC connection release message, if the UE has already obtained the configuration information of the Multicast MCCH, it starts to receive the Multicast MCCH according to the configuration information of the Multicast MCCH and obtains the configuration information of one or more target multicast sessions.

[0214] Optionally, the configuration information of the Multicast MCCH may be sent via a multicast SIB system message or dedicated signaling.

[0215] Optionally, at this time, the target multicast session is in an activated or deactivated state.

[0216] Optionally, the RRC connection release message includes or does not include the configuration information of the target multicast session.

[0217] Example 3:

[0218] When the UE receives the target multicast session activation message, if the UE has already obtained the configuration information of the Multicast MCCH, it starts to receive the Multicast MCCH according to the configuration information of the Multicast MCCH and obtains the configuration information (PTM configuration) of the target multicast session.

[0219] Optionally, the target multicast session may be one or more multicast sessions.

[0220] Optionally, the configuration information of the Multicast MCCH may be sent via multicast SIB or dedicated signalling.

[0221] Optionally, at this time, the UE is in RRC_INACTIVE or RRC_CONNECTED state.

[0222] Optionally, if an RRC connection release message has been received at this time, the RRC connection release message may include or not include the configuration information of the target multicast session.

[0223] Optionally, the target multicast session activation message may also be a group paging message used to indicate that a UE in the RRC_INACTIVE state is allowed to receive services of the target multicast session.

[0224] Example 4:

[0225] When the UE receives a target multicast session deactivation message, if the UE has already obtained the configuration information of the Multicast MCCH, it starts to receive the Multicast MCCH according to the configuration information of the Multicast MCCH and obtains the configuration information (PTM configuration) of the target multicast session, or the UE stops obtaining the configuration information (PTM configuration) of the target multicast session.

[0226] Optionally, the target multicast session may be one or more types.

[0227] Optionally, the configuration information of the Multicast MCCH may be sent via multicast SIB or dedicated signalling.

[0228] Optionally, at this time, the UE is in RRC_INACTIVE or RRC_CONNECTED state.

[0229] Optionally, if an RRC connection release message has been received at this time, the RRC connection release message may include or not include the configuration information of the target multicast session.

[0230] Optionally, the target multicast session deactivation message may also be a group paging message (group paging that indicates to stop the inactive multicast reception) used to instruct the UE in RRC_INACTIVE state to stop receiving the service of the target multicast session.

[0231] Embodiment 5:

[0232] Provided is an indication information, included in the PTM configuration (MBS-SessionInfo) corresponding to the target multicast session in the RRC connection release message, for indicating whether, after receiving the RRC connection release message and before the target multicast session is activated, the UE needs to obtain the configuration information (PTM configuration) of the target multicast session in the Multicast MCCH if the UE has already obtained the configuration information of the Multicast MCCH.

[0233] Optionally, the configuration information of the Multicast MCCH may be sent via multicast SIB or dedicated signalling.

[0234] Optionally, the target multicast session activation message may also be a group paging message (group paging that indicates to allow the inactive multicast reception) used to indicate that the UE in the RRC_INACTIVE state is allowed to receive the service of the target multicast session.

[0235] Optionally, the indication information is 1 bit, for example, a value of 1 represents required, and a value of 0 represents not required; for another example, a value of 1 represents not required, and a value of 0 represents required.

[0236] Example 6:

[0237] Provided is an indication information, included in the PTM configuration (MBS-SessionInfo) corresponding to the target multicast session in the Multicast MCCH, for indicating that after receiving this information, if no such information is received again, the target multicast session is deactivated. After the target multicast session is deactivated and before the next activation, if the UE has already obtained the configuration information of the Multicast MCCH, whether it is necessary to obtain the configuration information (PTM configuration) of the target multicast session in the Multicast MCCH.

[0238] Optionally, the configuration information of the Multicast MCCH may be sent via multicast SIB or dedicated signalling.

[0239] Optionally, the target multicast session deactivation message may also be a group paging message (group paging that indicates to stop the inactive multicast reception) used to instruct the UE in RRC_INACTIVE state to stop receiving the service of the target multicast session.

[0240] Optionally, the indication information is 1 bit, for example, a value of 1 represents required, and a value of 0 represents not required; for another example, a value of 1 represents not required, and a value of 0 represents required.

[0241] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any other combination. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions according to the embodiments of the present application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a digital video disc (DVD)), or a semiconductor medium (e.g., a solid state drive (SSD)).

[0242] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0243] The above are only preferred embodiments of the present invention and are not intended to limit the embodiments and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A multicast MCCH receiving method, characterized in that: The method is performed by a user, and comprises: Receive configuration information of multicast MCCH sent by the base station; When a preset multicast MCCH reception condition is triggered, start receiving a multicast MCCH sent by a base station according to the multicast MCCH configuration information, wherein the multicast MCCH includes the configuration information of the user target multicast session; According to the configuration information of the target multicast session, service data of the target multicast session is received.

2. The method for receiving multicast MCCH according to claim 1, characterized in that: When the user receives the multicast MCCH, the user is in RRC_INACTIVE state; The target multicast session is a multicast session that can be received by the user in the RRC_INACTIVE state.

3. The method for receiving multicast MCCH according to claim 1, characterized in that: The multicast MCCH reception condition includes: The user receives multicast MCCH configuration information; and / or The user receives an RRC connection release message; and / or The user receives an activation message of the target multicast session; and / or The user receives preset indication information, where the indication information is used to indicate whether the user needs to obtain configuration information of the target multicast session.

4. The method for receiving multicast MCCH according to claim 1, characterized in that: The method further comprises: The user receives the multicast MCCH and obtains configuration information of the target multicast session of the user; When the preset multicast MCCH stop receiving condition is triggered, the user stops receiving the multicast MCCH to stop receiving the configuration information of the target multicast session of the user.

5. The method for receiving multicast MCCH according to claim 1, characterized in that: The multicast MCCH stop receiving condition includes: The user receives a deactivation message of the target multicast session; and / or The user receives indication information, where the indication information is used to indicate whether the user needs to obtain configuration information of the target multicast session.

6. The method for receiving multicast MCCH according to claim 1, characterized in that: The process of the user receiving the multicast MCCH configuration information includes: Receive a system message or a dedicated signaling, and obtain multicast MCCH configuration information carried by the system message or the dedicated signaling.

7. The multicast MCCH receiving method according to claim 1 or 3, characterized in that: The process in which the user starts to receive the multicast MCCH includes: When the user obtains the multicast MCCH configuration information, the user starts to monitor the PDCCH encrypted by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

8. The multicast MCCH receiving method according to claim 1 or 3, characterized in that: The process of the user receiving the multicast MCCH includes: Monitor the PDCCH scrambled by the C-RNTI, and obtain the RRC connection release message according to the scheduling information in the PDCCH; When the user receives the RRC connection release message, the user starts to monitor the PDCCH encrypted by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

9. The multicast MCCH receiving method according to claim 1 or 3, characterized in that: The process of the user receiving the multicast MCCH includes: When the user receives the activation message of the target multicast session, the user starts to monitor the PDCCH encrypted by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

10. The multicast MCCH receiving method according to claim 9, characterized in that: The activation message of the target multicast session includes a group paging message, and the group paging message is used to instruct users in the RRC_INACTIVE state to receive the target multicast session.

11. The multicast MCCH receiving method according to claim 1, 3 or 9, characterized in that: The process of the user stopping receiving the multicast MCCH includes: When the user receives the deactivation message of the target multicast session, the user stops receiving the multicast MCCH, or stops receiving the multicast MCCH until the target multicast session is activated, or continues to receive the multicast MCCH to receive or stop receiving the configuration information of the target multicast session.

12. The multicast MCCH receiving method according to claim 11, characterized in that: The deactivation message of the target multicast session includes a group paging message, and the group paging message is used to instruct a user in an RRC_INACTIVE state to stop receiving the target multicast session.

13. The multicast MCCH receiving method according to claim 1, 3 or 9, characterized in that: The process of the user receiving the multicast MCCH includes: When the user receives the indication information, if the indication message instructs the user to obtain the configuration information of the target multicast session, the user starts to monitor the PDCCH scrambled by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session of the user; If the indication message instructs the user to stop acquiring the configuration information of the target multicast session, the user stops receiving the multicast MCCH to stop receiving the configuration information of the target multicast session of the user.

14. The multicast MCCH receiving method according to claim 13, characterized in that: The indication information is in the configuration information corresponding to the target multicast session in the RRC connection release message, or in the configuration information corresponding to the target multicast session in the multicast MCCH; The indication information is used to indicate whether the user obtains the configuration information of the target multicast session from the time the indication message is received until the target multicast session is activated, and / or from the time the target multicast session is deactivated until the next activation.

15. A multicast MCCH receiving device, characterized in that: The device is executed by a user, and comprises: A first receiving module, configured to receive configuration information of the multicast MCCH sent by the base station; A second receiving module is configured to start receiving the multicast MCCH sent by the base station according to the multicast MCCH configuration information when a preset multicast MCCH reception condition is triggered, wherein the multicast MCCH includes the configuration information of the user target multicast session; The third receiving module is used to receive the service of the target multicast session according to the configuration information of the target multicast session. data.

16. The receiving device of multicast MCCH according to claim 15, characterized in that: When the user receives the multicast MCCH, the user is in RRC_INACTIVE state; The target multicast session is a multicast session that can be received by the user in the RRC_INACTIVE state.

17. The receiving device of multicast MCCH according to claim 15, characterized in that: The multicast MCCH reception condition includes: The user receives multicast MCCH configuration information; and / or The user receives an RRC connection release message; and / or The user receives an activation message of the target multicast session; and / or The user receives preset indication information, where the indication information is used to indicate whether the user needs to obtain configuration information of the target multicast session.

18. The device for receiving multicast MCCH according to claim 15, characterized in that: The device comprises: The stop receiving module is used for, when a preset multicast MCCH stop receiving condition is triggered, the user stops receiving the multicast MCCH to stop receiving the configuration information of the target multicast session of the user.

19. The method for receiving multicast MCCH according to claim 1, characterized in that: The multicast MCCH stop receiving condition includes: The user receives a deactivation message of the target multicast session; and / or The user receives indication information, where the indication information is used to indicate whether the user needs to obtain configuration information of the target multicast session.

20. The receiving device of multicast MCCH according to claim 15, characterized in that: The first receiving module is used to receive a system message or a dedicated signaling, and obtain the multicast MCCH configuration information carried by the system message or the dedicated signaling.

21. The multicast MCCH receiving device according to claim 15 or 18, characterized in that: The second receiving module comprises: When the user obtains the multicast MCCH configuration information, the user starts to The wireless network receives the multicast MCCH according to the scheduling information in the PDCCH, monitors the PDCCH scrambled by a specific wireless network temporary identifier, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

22. The multicast MCCH receiving device according to claim 15 or 18, characterized in that: The second receiving module comprises: Monitor the PDCCH scrambled by the C-RNTI, and obtain the RRC connection release message according to the scheduling information in the PDCCH; When the user receives the RRC connection release message, the user starts to monitor the PDCCH encrypted by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

23. The multicast MCCH receiving device according to claim 15 or 18, characterized in that: The second receiving module comprises: When the user receives the activation message of the target multicast session, the user starts to monitor the PDCCH encrypted by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session.

24. The multicast MCCH receiving device according to claim 23, characterized in that: The activation message of the target multicast session includes a group paging message, and the group paging message is used to instruct users in the RRC_INACTIVE state to receive the target multicast session.

25. The multicast MCCH receiving method according to claim 15, 18 or 24, characterized in that: The stop receiving module comprises: When the user receives the deactivation message of the target multicast session, the user stops receiving the multicast MCCH, or stops receiving the multicast MCCH until the target multicast session is activated, or continues to receive the multicast MCCH to receive or stop receiving the configuration information of the target multicast session.

26. The multicast MCCH receiving device according to claim 25, characterized in that: The deactivation message of the target multicast session includes a group paging message, and the group paging message is used to instruct a user in an RRC_INACTIVE state to stop receiving the target multicast session.

27. The multicast MCCH receiving device according to claim 15 or 18, characterized in that: The second receiving module comprises: When the user receives the indication information, if the indication message instructs the user to obtain the configuration information of the target multicast session, the user starts to monitor the PDCCH scrambled by a specific wireless network temporary identifier according to the multicast MCCH configuration information, and receives the multicast MCCH according to the scheduling information in the PDCCH to receive the configuration information of the target multicast session of the user; If the indication message instructs the user to stop acquiring the configuration information of the target multicast session, the user stops receiving the multicast MCCH to stop receiving the configuration information of the target multicast session of the user.

28. The multicast MCCH receiving device according to claim 15 or 18, characterized in that: The indication information is in the configuration information corresponding to the target multicast session in the RRC connection release message, or in the configuration information corresponding to the target multicast session in the multicast MCCH; The indication information is used to indicate whether the user obtains the configuration information of the target multicast session from the time the indication message is received until the target multicast session is activated, and / or from the time the target multicast session is deactivated until the next activation.

29. A terminal, comprising a processor and a memory, wherein the memory is configured to store a computer program, and when the computer program is executed by the processor, the processor implements the method according to any one of claims 1 to 14.

30. A computer-readable storage medium comprising a computer program, wherein when the computer program is executed by a processor, the processor is caused to implement the method according to any one of claims 1 to 14.

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