Multicast configuration indication methods and apparatuses

Abstract

Multicast configuration indication methods and apparatuses. A method comprises: generating MBS multicast configuration information of a serving cell, generating indication information, and sending the MBS multicast configuration information of the serving cell and the indication information to a user device. The other method comprises: acquiring the MBS multicast configuration information of the serving cell, and acquiring the indication information, the indication information being used for indicating whether MBS session information, corresponding to multicast services, among the MBS multicast configuration information of the serving cell is the same as MBS session information, corresponding to multicast services, among MBS multicast configuration information of an adjacent cell; and when the MBS session information of the serving cell is the same as that of the adjacent cell, and the user device moves from the serving cell to the adjacent cell, using the MBS session information of the serving cell to continue to receive the multicast services.

Description

Multicast configuration indication method and device Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a multicast configuration indication 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 a connected state. For UEs in the newly introduced RRC_INACTIVE (also known as the RRC inactive state), a complete, significantly efficient, and widely accepted multicast service reception mechanism has yet to be proposed. Recent conference discussions have proposed that the base station issue MBS multicast configuration information within the UE's current serving cell, enabling UEs in the RRC inactive state to configure themselves according to the MBS multicast configuration information and successfully receive the corresponding multicast services in their current serving cell.

[0004] However, during the reception process, the inventors discovered that the latest research still has at least the following problems: when a UE in an RRC inactive state receives multicast services in a serving cell, if the UE moves from the serving cell to a neighboring cell, it is still necessary to obtain the MBS multicast configuration information sent by the base station within the neighboring cell and complete the configuration before the UE can continue to receive the multicast services. This may cause transmission delays, data packet loss, etc., thereby reducing the continuity of the UE's reception of MBS services.

[0005] Therefore, the prior art urgently needs a multicast configuration prompt method.

[0006] Summary of the Invention

[0007] In view of the above-mentioned problem existing when a user equipment receiving MBS services in an RRC inactive state moves, the present invention provides a multicast configuration indication method and apparatus.

[0008] A multicast configuration indication method is provided, which is executed by a network device and includes:

[0009] Generate MBS multicast configuration information for the serving cell, the MBS multicast configuration information including MBS session information corresponding to the multicast service, so that when a user equipment in an RRC inactive state receives the multicast service in the serving cell, it receives the multicast service using the MBS session information in the MBS multicast configuration information of the serving cell;

[0010] Generate indication information, where the indication information is used to indicate whether the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the serving cell and the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the neighboring cell are the same;

[0011] The MBS multicast configuration information and indication information of the serving cell are sent to the user equipment. If the MBS session information of the serving cell and the neighboring cell is the same, when the user equipment moves from the serving cell to the neighboring cell, it will continue to receive multicast services with the MBS session information of the serving cell.

[0012] A multicast configuration indication method is provided, which is executed by a user equipment and includes:

[0013] Obtaining MBS multicast configuration information of the serving cell, the MBS multicast configuration information including MBS session information corresponding to the multicast service, so that when a user equipment in an RRC inactive state receives the multicast service in the serving cell, it receives the service using the MBS session information in the MBS multicast configuration information of the serving cell;

[0014] Obtaining indication information, where the indication information is used to indicate whether the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the serving cell and the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the neighboring cell are the same;

[0015] If the MBS session information of the serving cell and the neighboring cell is the same, when the user equipment moves from the serving cell to the neighboring cell, it will continue to receive the multicast service using the MBS session information of the serving cell.

[0016] A multicast configuration indication device is provided, comprising:

[0017] Generate modules, including:

[0018] a first generating unit, configured to generate MBS multicast configuration information of a serving cell, the MBS multicast configuration information including MBS session information corresponding to a multicast service, so that when a user equipment in an RRC inactive state receives a multicast service in the serving cell, the user equipment receives the multicast service using the MBS session information in the MBS multicast configuration information of the serving cell;

[0019] a second generating unit, configured to generate indication information, where the indication information is used to indicate whether the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the serving cell and the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the neighboring cell are the same;

[0020] The sending module is used to send the MBS multicast configuration information and indication information of the serving cell to the user equipment. If the MBS session information of the serving cell and the adjacent cell is the same, when the user equipment moves from the serving cell to the adjacent cell, it will continue to receive the multicast service with the MBS session information of the serving cell.

[0021] A multicast configuration indication device is provided, comprising:

[0022] a receiving module, configured to receive MBS multicast configuration information of a serving cell, the MBS multicast configuration information including MBS session information corresponding to a multicast service, so that when a user equipment in an RRC inactive state receives a multicast service in the serving cell, the user equipment receives the multicast service using the MBS session information in the MBS multicast configuration information of the serving cell; and

[0023] receiving indication information, where the indication information is used to indicate whether the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the serving cell and the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the neighboring cell are the same;

[0024] The processing module, if the MBS session information of the serving cell and the neighboring cell is the same, when the user equipment moves from the serving cell to the neighboring cell, will continue to receive the multicast service with the MBS session information of the serving cell.

[0025] A base station 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 configuration indication method for sending indication information as described above.

[0026] 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 configuration indication method for receiving indication information.

[0027] A computer-readable storage medium comprises a computer program, and when the computer program is executed by a processor, the processor is caused to implement any one of the methods.

[0028] The beneficial effects of the present invention are as follows: an indication information is introduced, through which the user equipment can clearly understand whether the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the current serving cell is the same as the MBS session information of the same multicast service in the adjacent cell. When the UE moves from the serving cell to the adjacent cell, it can decide whether to directly use the MBS session information of the serving cell to continue receiving the multicast service based on the indication result, thereby avoiding transmission delay, data packet loss and the like, thereby improving the continuity of the UE receiving the MBS service. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG1 is a schematic diagram of a process for sending instruction information in one embodiment of the present invention;

[0030] FIG2 is a schematic diagram of a process for receiving instruction information in one embodiment of the present invention;

[0031] FIG3 is a schematic structural diagram of a sending device in one embodiment of the present invention;

[0032] FIG4 is a schematic structural diagram of a receiving device in one embodiment of the present invention. DETAILED DESCRIPTION

[0033] 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.

[0034] The present invention provides a multicast configuration indication method and apparatus to solve the problems in the prior art. By introducing indication information, the indication information can indicate whether the MBS session information of the serving cell and the adjacent cell is the same. When a UE moves from the serving cell to the adjacent cell, the UE can decide whether to directly use the MBS session information of the serving cell based on the indication result to continue receiving multicast services, thereby avoiding transmission delays, data packet loss, and the like caused by the need to re-receive MBS multicast configuration information after entering the adjacent cell.

[0035] First, a multicast configuration indication method is provided, which is executed by a network device and includes:

[0036] Generate MBS multicast configuration information for the serving cell, the MBS multicast configuration information including MBS session information corresponding to the multicast service, so that when a user equipment in an RRC inactive state receives the multicast service in the serving cell, it receives the multicast service using the MBS session information in the MBS multicast configuration information of the serving cell;

[0037] Generate indication information, where the indication information is used to indicate whether the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the serving cell and the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the neighboring cell are the same;

[0038] The MBS multicast configuration information and indication information of the serving cell are sent to the user equipment. If the MBS session information of the serving cell and the neighboring cell is the same, when the user equipment moves from the serving cell to the neighboring cell, it will continue to receive multicast services with the MBS session information of the serving cell.

[0039] Specifically, considering that if a UE in an RRC inactive state receives a multicast service in a serving cell, if the UE moves, it will undergo operations such as cell reselection, cell reservation, and access restriction during the process of moving from the serving cell to a neighboring cell. Moreover, after the UE enters a neighboring cell, it is also necessary to obtain the MBS multicast configuration information periodically sent by the base station within the neighboring cell range and complete the configuration before the UE can continue to receive the multicast service. Therefore, the present invention provides a multicast configuration indication method, in which a network device generates MBS multicast configuration information and indication information, and the indication information is used to indicate whether the MBS session information corresponding to the multicast service received by the UE in the MBS multicast configuration information of the serving cell is the same as the MBS session information of the neighboring cell. If they are the same, after the UE moves to the neighboring cell, it can directly use the configured MBS session information of the serving cell to receive the multicast service, which can avoid transmission delays, data packet loss, and the like, and improve the continuity of MBS service reception.

[0040] Among them, the process of the multicast configuration indication method executed by the network device can be as shown in Figure 1, generating MBS multicast configuration information, generating indication information, sending MBS multicast configuration information, and sending indication information. The process executed by the network device can also be generating MBS multicast configuration information, sending MBS multicast configuration information, generating indication information, and sending indication information.

[0041] The present invention also provides a multicast configuration indication method, which is executed by a user equipment and includes:

[0042] Obtaining MBS multicast configuration information of the serving cell, the MBS multicast configuration information including MBS session information corresponding to the multicast service, so that when a user equipment in an RRC inactive state receives the multicast service in the serving cell, it receives the service using the MBS session information in the MBS multicast configuration information of the serving cell;

[0043] Obtaining indication information, where the indication information is used to indicate whether the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the serving cell and the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the neighboring cell are the same;

[0044] If the MBS session information of the serving cell and the neighboring cell is the same, when the user equipment moves from the serving cell to the neighboring cell, it will continue to receive the multicast service using the MBS session information of the serving cell.

[0045] Specifically, the user equipment receives MBS multicast configuration information and indication information. The indication information is used to indicate whether the MBS session information corresponding to the multicast service received by the UE in the MBS multicast configuration information of the serving cell is the same as the MBS session information of the adjacent cell. If they are the same, after the UE moves to the adjacent cell, it can directly use the configured MBS session information of the serving cell to receive the multicast service, which can avoid transmission delays, data packet loss, etc., and improve the continuity of MBS service reception.

[0046] The process of the multicast configuration indication method executed by the user equipment may be as shown in FIG2 , wherein the user equipment receives MBS multicast configuration information and indication information. If the MBS session information of the serving cell and the neighboring cell is the same, the UE may directly use the configured MBS session information of the serving cell to receive multicast services after moving to the neighboring cell. It should be noted that the present invention does not limit the specific order of receiving the MBS multicast configuration information and indication information. That is, the user equipment may receive the MBS multicast configuration information first and then the indication information, the user equipment may receive the indication information first and then the MBS multicast configuration information, or the user equipment may receive the MBS multicast configuration information and indication information simultaneously.

[0047] The base station generates and sends the MBS multicast configuration information of the serving cell, and accordingly, the UE can receive the MBS multicast configuration information of the serving cell. Specifically, the base station can send an RRC release connection message carrying MBS multicast configuration information. The UE will switch from the RRC connection state to the RRC inactive state after obtaining the RRC release connection message, and obtain the MBS multicast configuration information carried in the RRC release connection message, and then obtain the MBS session information corresponding to the multicast service that the UE can receive in the RRC inactive state and perform corresponding configuration, so that the UE can receive the multicast service in the RRC inactive state; the base station can sequentially send system messages or dedicated signaling, send multicast MCCH configuration information, and send multicast MCCH information carrying MBS multicast configuration information. The UE can sequentially obtain system messages or dedicated signaling, obtain multicast MCCH configuration information, obtain multicast MCCH information, and then obtain the MBS multicast configuration information carried in the multicast MCCH information, and then obtain the MBS multicast configuration information carried in the multicast MCCH information, and then obtain the MBS session information corresponding to the multicast service that the UE can receive in the RRC inactive state and perform corresponding configuration, so that the UE can receive the multicast service in the RRC inactive state.

[0048] The base station generates and sends indication information, and the UE can receive the indication information accordingly. Specifically, the base station can send the indication information separately, carry the indication information in MBS multicast configuration information, or send it in other forms. The UE can obtain the indication information separately or obtain the indication information carried in the MBS multicast configuration information. If the MBS session information of the serving cell and the neighboring cell is the same, when the user equipment moves from the serving cell to the neighboring cell, it will continue to receive multicast services using the MBS session information of the serving cell, thereby avoiding packet loss and additional loss for the user equipment and improving user performance.

[0049] For example, there is a base station in the system, and the base station covers multiple cells. There is a user equipment UE1 in one of the cells. The current cell where UE1 is located is the serving cell. UE1 obtains the MBS multicast configuration information PTM configuration1 of the serving cell sent by the base station in the serving cell, and then obtains the MBS1 session information carried in the MBS multicast configuration information and configures it so that UE1 can receive the multicast service MBS1 when it is in an RRC inactive state. If UE1 moves from the current serving cell to a neighboring cell, if based on the existing technology, when UE1 in an RRC inactive state moves from the serving cell to the neighboring cell during the process of receiving MBS1, UE1 needs to first obtain the system message or dedicated signaling periodically sent by the base station in the neighboring cell to obtain the multicast MCCH configuration information, and then obtain the periodically sent multicast MCCH information according to the multicast MCCH configuration information, and then obtain the MBS multicast configuration information PTM of the neighboring cell according to the multicast MCCH information. configuration2, and finally obtains the MBS1 session information contained therein and completes the configuration before it can start receiving MBS1. However, the MBS1 data packet has been in the downlink state. After UE1 enters the adjacent cell, it cannot receive MBS1 as soon as possible, which leads to the loss of MBS1 data packets. Accordingly, the technical solution provided by this patent can indicate to UE1 through indication information whether the MBS1 session information in the MBS multicast configuration information PTM configuration1 of the serving cell and the MBS1 session information in the MBS multicast configuration information PTM configuration2 of the adjacent cell are the same. If they are the same, when UE1 moves from the serving cell to the adjacent cell, it can directly continue to receive the MBS1 multicast service with the MBS1 session information of the serving cell, and can receive MBS1 data packets in time, avoiding the phenomenon of data packet loss, thereby improving the continuity of UE1 receiving MBS1.

[0050] It should be noted that there may be multiple base stations in a communication system, each base station may cover multiple cells, and each cell may be connected to multiple UEs, among which there are UEs that can receive one or more multicast services in an RRC inactive state. For ease of description, the present invention is based on an analysis of a UE that can receive multicast services in an RRC inactive state, and the cell in which the UE is currently located is regarded as a serving cell. The MBS multicast configuration information of the serving cell generated by the base station may include MBS session information corresponding to all multicast services in the serving cell. After the UE obtains the multicast configuration information, it can obtain one or more MBS session information corresponding to one or more multicast services that the UE can receive in an RRC inactive state and perform corresponding configuration, thereby correspondingly receiving one or more multicast services.

[0051] It should be noted that the technical solution described in this patent for determining whether to use the MBS session information of the serving cell after moving from the serving cell to the neighboring cell and based on the indication information is primarily applicable to UEs in the RRC Inactive state. That is, after a UE in the RRC Inactive state moves from the serving cell to the neighboring cell, it can determine whether to use the MBS session information of the serving cell based on the indication information. However, in actual operation, it can also be applied to UEs in the RRC Connected state or the RRC Idle state.

[0052] It should be noted that the adjacent cell described in this patent is a cell that has at least one same multicast service as the serving cell. The adjacent cell may be under the coverage of the same network device as the serving cell, or may not be under the coverage of the same network device as the serving cell.

[0053] It should be noted that the user equipment described in this patent includes mobile phone terminals and vehicle-mounted terminals, and the network equipment includes base stations and core networks. Among them, the network equipment that sends indication information directly to the user equipment is usually the base station, and the network equipment that establishes a multicast session with the user equipment is usually the core network.

[0054] In one embodiment of the present invention, each bit in the indication information is assigned a value of 0 or 1 to indicate whether the MBS session information of the serving cell is the same as or different from the MBS session information of the neighboring cell, or whether the neighboring cell does not provide multicast services.

[0055] Specifically, the bits in the indication information may correspond one-to-one with the indicated neighboring cells in a preset sorting order in order from high to low or from low to high.

[0056] The first assignment method can be used to assign values ​​to the bits in the indication information. The assignment method is:

[0057] When the value is 0, it indicates that the MBS session information of the serving cell is the same as the MBS session information of the neighboring cell corresponding to the bit;

[0058] When the value is 1, it indicates that the MBS session information of the serving cell is different from the MBS session information of the neighboring cell corresponding to the bit.

[0059] The second assignment method can be used to assign values ​​to the bits in the indication information. The assignment method is:

[0060] When the value is 0, it indicates that the MBS session information of the serving cell is different from the MBS session information of the neighboring cell corresponding to the bit;

[0061] When the value is 1, it indicates that the MBS session information of the serving cell is the same as the MBS session information of the neighboring cell corresponding to the bit.

[0062] The bit assignment in the indication information may further indicate that the neighboring cell does not provide multicast services. For example, when the bit assignment is 0, it indicates that the neighboring cell does not provide multicast services; or when the bit assignment is 1, it indicates that the neighboring cell does not provide multicast services. For example, when there is a base station in the system, the base station covers four cells Cell1, Cell2, Cell3, and Cell4, wherein Cell1 receives multicast services MBS1 and MBS2, and Cell2, Cell3, and Cell4 receive multicast service MBS2. When UE1 in Cell1 receives MBS1 in an RRC inactive state, when the bit assignment in the indication information is 0, it indicates that all neighboring cells Cell2, Cell3, and Cell4 do not provide multicast service MBS1. The indication information may also be assigned a value of 1 to indicate that all neighboring cells Cell2, Cell3, and Cell4 do not provide multicast service MBS1. In actual operation, UE1 can also obtain MBS multicast configuration information and then obtain a neighboring cell list. The neighboring cell list clearly indicates whether each neighboring cell can receive the corresponding multicast service, thereby determining whether the neighboring cell provides the multicast service.

[0063] In an embodiment of the present invention, the total number of bits of the indication information may be 0 bits, which may be used to indicate whether the MBS session information of all neighboring cells is the same as that of the serving cell.

[0064] For example, when there is a base station in the system, the base station covers four cells Cell1, Cell2, Cell3, and Cell4, among which Cell1 receives multicast services MBS1 and MBS2, and Cell2, Cell3, and Cell4 receive multicast services MBS1. When UE1 in Cell1 receives MBS1 in the RRC inactive state, the indication information can use 0 bits to indicate that the multicast session information of MBS1 in all adjacent cells Cell2, Cell3, and Cell4 is the same as the MBS1 session information of the serving cell Cell1. The indication information can also use 0 bits to indicate that the multicast session information of MBS1 in all adjacent cells Cell2, Cell3, and Cell4 is different from the MBS1 session information of the serving cell Cell1.

[0065] In an embodiment of the present invention, the total number of bits of the indication information may be 0 bits, which may be used to indicate that the serving cell does not provide the MBS session information in the neighboring cell.

[0066] Specifically, the total number of bits of the indication information can be 0 bits, that is, it can indicate that the indication information is default, the serving cell does not provide the MBS session information in the neighboring cell, and does not indicate whether the MBS session information of the serving cell and the neighboring cell is the same or different. In other words, the user equipment needs to go to the neighboring cell and re-receive the MBS session information of the neighboring cell before it can continue to receive multicast services.

[0067] In an embodiment of the present invention, the total number of bits of the indication information may be 0 bits, which may be used to indicate that all neighboring cells do not provide multicast services.

[0068] For example, when there is a base station in the system, the base station covers four cells Cell1, Cell2, Cell3, and Cell4, among which Cell1 receives multicast services MBS1 and MBS2, and Cell2, Cell3, and Cell4 receive multicast service MBS2. When UE1 in Cell1 receives MBS1 in the RRC inactive state, the indication information can use 0 bits to indicate that all adjacent cells Cell2, Cell3, and Cell4 do not provide multicast service MBS1.

[0069] In an embodiment of the present invention, the total number of bits of the indication information may be 1 bit, which is used to indicate whether the MBS session information of all neighboring cells is the same as that of the serving cell.

[0070] Specifically, the bit position of the indication information can be 1 bit, and the first assignment method can be used, that is, when the assignment value is 0, it indicates that the MBS session information of all neighboring cells is the same as that of the serving cell, and when the assignment value is 1, it indicates that the MBS session information of at least one neighboring cell is different from that of the serving cell; the second assignment method can also be used, that is, when the assignment value is 0, it indicates that the MBS session information of at least one neighboring cell is different from that of the serving cell, and when the assignment value is 1, it indicates that the MBS session information of all neighboring cells is the same as that of the serving cell.

[0071] For example, when there is a base station in the system, the base station covers four cells Cell1, Cell2, Cell3, and Cell4, among which Cell1 receives multicast services MBS1 and MBS2, and Cell2, Cell3, and Cell4 receive multicast services MBS1. When UE1 in Cell1 receives MBS1 in the RRC inactive state, the indication information adopts the first assignment mode, that is, when the indication information is "0", it indicates that the multicast session information of MBS1 in all adjacent cells Cell2, Cell3, and Cell4 is the same as the MBS1 session information of the serving cell Cell1. When it is "1", it indicates that the adjacent The multicast session information of MBS1 of at least one neighboring cell among cells Cell2, Cell3, and Cell4 is different from the MBS1 session information of the serving cell Cell1; the indication information adopts the second assignment method, that is, when the indication information is "1", it indicates that the multicast session information of MBS1 in all neighboring cells Cell2, Cell3, and Cell4 is the same as the MBS1 session information of the serving cell Cell1; when it is "0", it indicates that the multicast session information of MBS1 in at least one neighboring cell among neighboring cells Cell2, Cell3, and Cell4 is different from the MBS1 session information of the serving cell Cell1.

[0072] In one embodiment of the present invention, the total number of bits of the indication information may provide the total number of neighboring cells of the multicast service, and each bit is used to indicate whether the MBS session information of the corresponding neighboring cell is the same as the MBS session information of the serving cell.

[0073] Specifically, the bit position of the indication information can be the number of adjacent cells providing the same corresponding multicast service. The bit position can adopt the first assignment method, that is, when the assignment value is 0, it indicates that the MBS session information of the corresponding adjacent cell providing the multicast service is the same as that of the serving cell; when the assignment value is 1, it indicates that the MBS session information of the corresponding adjacent cell providing the multicast service is different from that of the serving cell; the second assignment method can also be adopted, that is, when the assignment value is 0, it indicates that the MBS session information of the corresponding adjacent cell providing the multicast service is different from that of the serving cell; when the assignment value is 1, it indicates that the MBS session information of the corresponding adjacent cell providing the multicast service is the same as that of the serving cell.

[0074] For example, when there is a base station in the system, the base station covers four cells Cell1, Cell2, Cell3, and Cell4, among which Cell1 receives multicast service MBS1, Cell2 and Cell3 receive multicast services MBS1 and MBS2, and Cell4 receives multicast service MBS2. When UE1 in Cell1 receives MBS1 in the RRC inactive state, the adjacent cells providing MBS1 are Cell2 and Cell3. Therefore, the total number of bits of the indication information is 2 bits, and each bit indicates whether the multicast session information of MBS1 of the corresponding Cell2 and Cell3 is the same as the MBS1 session information of the serving cell Cell1. The indication information may adopt the first assignment mode, that is, when the indication information is "00", it indicates that the multicast session information of MBS1 in the neighboring cells Cell2 and Cell3 providing MBS1 is the same as the MBS1 session information of the serving cell Cell1; when the indication information is "01", it indicates that the multicast session information of MBS1 in the neighboring cell Cell2 providing MBS1 is different from the MBS1 session information of the serving cell Cell1, and the multicast session information of MBS1 in the neighboring cell Cell3 providing MBS1 is the same as the MBS1 session information of the serving cell Cell1; the indication information When it is "10", it indicates that the multicast session information of MBS1 of the neighboring cell Cell2 providing MBS1 is the same as the MBS1 session information of the serving cell Cell1, and the multicast session information of MBS1 of the neighboring cell Cell3 providing MBS1 is different from the MBS1 session information of the serving cell Cell1; when the indication information is "11", it indicates that the multicast session information of MBS1 of the neighboring cells Cell2 and Cell3 providing MBS1 is different from the MBS1 session information of the serving cell Cell1, and the bits in the indication information here correspond to the IDs of the neighboring cells in ascending order from low to high. Among them, the bits in the indication information can also correspond to the IDs of the neighboring cells in descending order from low to high. In addition, the indication information can also adopt the second assignment method, which will not be repeated here.

[0075] In one embodiment of the present invention, the total number of bits of the indication information may be the total number of neighboring cells, and the bits corresponding to the neighboring cells providing multicast services are used to indicate whether the MBS session information of the neighboring cells is the same as the MBS session information of the serving cell.

[0076] Specifically, the bits of the indication information may be the total number of adjacent cells, and the first assignment method may be used, that is, when the assignment value is 0, it indicates that the MBS session information of the corresponding adjacent cell is the same as that of the serving cell, and when the assignment value is 1, it indicates that the MBS session information of the corresponding adjacent cell is different from that of the serving cell; the second assignment method may also be used, that is, when the assignment value is 0, it indicates that the MBS session information of the corresponding adjacent cell is different from that of the serving cell, and when the assignment value is 1, it indicates that the MBS session information of the corresponding adjacent cell is the same as that of the serving cell.

[0077] For example, when there is a base station in the system, the base station covers four cells Cell1, Cell2, Cell3, and Cell4, among which Cell1 receives multicast service MBS1, Cell2, Cell3, and Cell4 receive multicast services MBS1 and MBS2. When UE1 in the serving cell Cell1 receives MBS1 in the RRC inactive state, the total number of bits of the indication information is 3 bits, and each bit indicates whether the multicast session information of MBS1 of Cell2, Cell3, and Cell4 is the same as the MBS1 session information of the serving cell Cell1. Among them, the indication information can adopt the first assignment method, that is, when the indication information is "000", it indicates that the multicast session information of MBS1 in Cell2, Cell3, and Cell4 is the same as the MBS1 session information of the serving cell Cell1; when the indication information is "001", it indicates that the multicast session information of MBS1 in Cell2 is different from the MBS1 session information of the serving cell Cell1, and the multicast session information of MBS1 in Cell3 and Cell4 is the same as the MBS1 session information of the serving cell Cell1; when the indication information is "010", it indicates that the MBS1 session information of Cell3 is different from that of Cell1, and the MBS1 session information of Cell2 and Cell4 is the same as that of Cell1; when the indication information is "011", it indicates that the MBS1 session information of Cell4 is the same as that of Cell1 The MBS1 session information of Cell2 and Cell3 is the same as that of Cell1; when the indication information is "100", it indicates that the MBS1 session information of Cell4 is different from that of Cell1, and the MBS1 session information of Cell2 and Cell3 is the same as that of Cell1; when it is "101", it indicates that the MBS1 session information of Cell3 is the same as that of Cell1, and the MBS1 session information of Cell2 and Cell4 is the same as that of Cell1; when it is "110", it indicates that the MBS1 session information of Cell2 is the same as that of Cell1, and the MBS1 session information of Cell3 and Cell4 is the same as that of Cell1; when the indication information is "111", it indicates that the MBS1 multicast session information of Cell2, Cell3, and Cell4 is different from the MBS1 session information of the serving cell Cell1. Here, the bits in the indication information correspond to the IDs of the neighboring cells in ascending order from low to high. Among them, the bits in the indication information can also correspond to the IDs of the neighboring cells in descending order from low to high. In addition, the indication information can also adopt the second assignment method, which will not be described here.

[0078] It should be noted that in actual operation, the indication information may also include bits indicating neighboring cells that do not provide the corresponding multicast service, and the first or second value assignment method described above may also be used for this portion. However, since the UE knows the neighboring cell list and knows whether different neighboring cells transmit the multicast service corresponding to the indication information, it will not decode or read the bits indicating neighboring cells that do not transmit the multicast service in the indication information, or may consider the information indicated by these bits to be meaningless.

[0079] In one embodiment of the present invention, the process of the network device sending the indication information includes:

[0080] An RRC connection release message is sent to the user equipment, where the RRC connection release message carries indication information.

[0081] In one embodiment of the present invention, the process of sending an RRC connection release message to a user equipment includes:

[0082] The PDCCH of the RRC connection release message is scrambled using the C-RNTI corresponding to the user equipment. The RRC connection release message carries indication information, which is used to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

[0083] In one embodiment of the present invention, the process of the user equipment receiving the indication information includes:

[0084] Receive an RRC connection release message from the network device, and obtain indication information carried in the RRC connection release message.

[0085] In one embodiment of the present invention, the process of receiving an RRC connection release message from a network device includes:

[0086] Monitor the PDCCH scrambled by the C-RNTI, receive the PDCCH of the RRC connection release message according to the scheduling information in the PDCCH, and obtain the indication information carried by the RRC connection release message. The indication information is used to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

[0087] Specifically, the network device uses C-RNTI to scramble the PDCCH of the RRC connection release message, the user equipment monitors the PDCCH scrambled by C-RNTI, receives the RRC connection release message according to the scheduling information in the PDCCH, and then obtains the indication information carried in the RRC connection release message, so that the user equipment can clearly understand whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the adjacent cell. Then, after the user equipment moves to the adjacent cell, it can decide whether to directly use the MBS session information of the serving cell according to the indication information.

[0088] In one embodiment of the present invention, the RRC connection release message includes MBS multicast configuration information of the serving cell;

[0089] MBS multicast configuration information includes:

[0090] At least one MBS session information, each MBS session information corresponding to a multicast service, the indication information being independent of the MBS session information of the serving cell, or the indication information being in the MBS session information of the serving cell;

[0091] and / or

[0092] A neighboring cell list, where the neighboring cell list includes at least one neighboring cell identifier, and the neighboring cell provides at least one multicast service that is the same as that of the serving cell;

[0093] The indication information is associated with the multicast service and the neighboring cell to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

[0094] Specifically, the MBS multicast configuration information may include MBS session information. The indication information may be in the MBS session information, outside the MBS session information and in the MBS multicast configuration information, or outside the MBS multicast configuration information. The indication information is associated one-to-one with the multicast service to indicate whether the MBS session information of each multicast service in the serving cell is the same as the MBS session information in the neighboring cell. The data structure of the indication information may be expressed as follows:

[0095] Multicast-NeighbourCell BIT STRING(SIZE(maxNeighCellMBS))

[0096] Among them, Multicast-NeighbourCell is indication information, and maxNeighCellMBS can be the number of neighboring cells. The total number of neighboring cells depends on the neighboring cell list. Accordingly, the data structure of the neighboring cell list can be expressed as follows:

[0097] If the indication information is in the MBS session information, the corresponding data structure can be expressed as:

[0098] Among them, MBS-SessionInfo is MBS session information, and Multicast-NeighbourCell is indication information.

[0099] If the indication information is independent of the MBS session information, the corresponding data structure can be expressed as:

[0100] Among them, MBS-SessionInfo is the MBS session information, Multicast-NeighbourCell is the indication information, mbs-SessionId is the MBS session ID corresponding to the multicast service, and the MBS session information MBS-SessionInfo and the indication information Multicast-NeighbourCell are both associated with mbs-SessionId to indicate whether the MBS session information of the corresponding multicast service in the serving cell is the same as the MBS session information of the neighboring cell.

[0101] It should be noted that the array names and information names described in this patent, such as Multicast-NeighbourCell and MBS-Multicast-NeighbourCell, are all examples. Other names can also be used for expression in actual operations, and the present invention does not limit this.

[0102] For example, when there is a base station in the system, the base station covers four cells Cell1, Cell2, Cell3, and Cell4, and these four cells all receive the multicast service MBS1. When UE1 in the serving cell Cell1 receives MBS1 in the RRC inactive state, the network device can generate indication information, so that the RRC connection release message carries the indication information, and uses C-RNTI1 to scramble the PDCCH that schedules the RRC connection release message. Accordingly, the user equipment UE1 monitors the PDCCH scrambled by the C-RNTI, receives the RRC connection release message according to the scheduling information in the PDCCH, and receives the indication information. The indication information can be as follows:

[0103] When the MBS1 indication information is in the MBS1 session information of the MBS multicast configuration information:

[0104] The total number of bits of the indication information may be 0, indicating that the MBS1 session information in all neighboring cells Cell2, Cell3, and Cell4 is the same as the MBS1 session information in Cell1, that is, the Multicast-NeighbourCell item is defaulted. The corresponding data structure is as follows:

[0105] The total number of bits of the indication information may also be 1 bit, which is used to indicate that the MBS1 session information in all adjacent cells Cell2, Cell3, and Cell4 is the same as the MBS1 session information in Cell1. In this case, if the first value assignment method is used, it can be represented as "0". The corresponding data structure is as follows:

[0106] The value of the Multicast-NeighbourCell is 0.

[0107] The total number of bits of the indication information may also be the total number of adjacent cells providing multicast services. Each bit is used to indicate that the MBS1 session information in the corresponding adjacent cells Cell2, Cell3, and Cell4 is the same as the MBS1 session information in Cell1. In this case, if the first assignment method described above is adopted, it can be represented as "000". The corresponding data structure is as follows:

[0108] The value of the Multicast-NeighbourCell mentioned above is 000.

[0109] The total number of bits of the indication information may also be the total number of neighboring cells, and the bits corresponding to the neighboring cells providing multicast services are used to indicate whether the MBS session information of the neighboring cells is the same as the MBS session information of the serving cell. Based on the above embodiment, if Cell1, Cell2, and Cell3 all receive MBS1 and MBS2, and Cell4 receives MBS2 and MBS3, then an analysis is performed on UE1 receiving MBS1 in Cell1. Cell1 is a serving cell, Cell2, Cell3, and Cell4 are all neighboring cells, and Cell2 and Cell3 are neighboring cells that provide the corresponding multicast service MBS1. If the MBS1 session information in Cell2 and Cell3 is the same as the MBS1 session information in Cell1, the first assignment method described above is adopted, that is, the bit portion corresponding to the neighboring cells Cell2 and Cell3 that provide the multicast service can be represented as "00", and the bit portion corresponding to the neighboring cell that does not provide the multicast service can be arbitrarily represented as "1" or "0". Finally, the indication information is represented as "000" or "100", and the corresponding data structure is as follows:

[0110] The value of the Multicast-NeighbourCell is 000 or 100.

[0111] When the MBS1 indication information is independent of the MBS1 session information in the MBS multicast configuration information:

[0112] The total number of bits of the indication information may be 0, indicating that the MBS1 session information in all neighboring cells Cell2, Cell3, and Cell4 is the same as the MBS1 session information in Cell1, that is, the Multicast-NeighbourCell item is defaulted. The corresponding data structure is as follows:

[0113] The total number of bits of the indication information may also be 1 bit, which is used to indicate that the MBS1 session information in all adjacent cells Cell2, Cell3, and Cell4 is the same as the MBS1 session information in Cell1. In this case, if the first value assignment method is used, it can be represented as "0". The corresponding data structure is as follows:

[0114] The value of the Multicast-NeighbourCell is 0.

[0115] The total number of bits of the indication information may also be the total number of adjacent cells providing multicast services. Each bit is used to indicate that the MBS1 session information in the corresponding adjacent cells Cell2, Cell3, and Cell4 is the same as the MBS1 session information in Cell1. In this case, if the first assignment method described above is adopted, it can be represented as "000". The corresponding data structure is as follows:

[0116] The value of the Multicast-NeighbourCell mentioned above is 000.

[0117] The total number of bits in the indication information may also be the total number of neighboring cells. The bits corresponding to the neighboring cells providing multicast services are used to indicate whether the MBS session information of the neighboring cells is the same as the MBS session information of the serving cell. Based on the above embodiment, if Cell1, Cell2, and Cell3 all receive MBS1 and MBS2, and Cell4 receives MBS2 and MBS3, then analysis is performed on UE1 receiving MBS1 in Cell1. Cell1 is the serving cell, Cell2, Cell3, and Cell4 are all neighboring cells, and Cell2 and Cell3 are neighboring cells providing the corresponding multicast service MBS1. If the MBS1 session information in Cell2 and Cell3 is the same as the MBS1 session information in Cell1, the first assignment method described above is used, i.e., the bits corresponding to the neighboring cells Cell2 and Cell3 providing multicast services can be represented as "00", while the bits corresponding to the neighboring cells not providing multicast services can be arbitrarily represented as "1" or "0". Finally, the indication information is represented as "000" or "100", and the corresponding data structure is as follows:

[0118] The value of the Multicast-NeighbourCell is 000 or 100.

[0119] It should be noted that the MBS multicast configuration information may include multiple MBS session information, each MBS session information corresponds to a multicast service, and each indication information is also used to indicate whether the MBS session information of the corresponding multicast service in the serving cell and the MBS session information of the adjacent cell are the same. For example, when there is a base station in the system, the base station covers four cells, and these four Cell1, Cell2, Cell3, and Cell4 all receive multicast services MBS1 and MBS2, wherein UE1 in Cell1 receives MBS1 and MBS2 in an RRC inactive state. At this time, for UE1 receiving multicast services, Cell1 is the serving cell, and Cell2, Cell3, and Cell4 are adjacent cells. The MBS multicast configuration information sent by the base station to Cell1 includes MBS1 session information and MBS2 session information. After UE1 receives the MBS multicast configuration information, According to the MBS1 session information and the MBS2 session information, they are configured to respectively realize the reception of MBS1 and MBS2. Accordingly, the base station generates indication information corresponding to MBS1 and indication information corresponding to MBS2. The indication information corresponding to MBS1 is used to indicate whether the MBS1 session information in the MBS multicast configuration information sent to Cell1 is the same as the MBS1 session information in the MBS multicast configuration information sent to Cell2, Cell3, and Cell4. If they are the same, when UE1 moves from Cell1 to Cell2, Cell3, and Cell4, After that, the MBS1 session information under Cell1 can be directly used to receive MBS1. The indication information corresponding to MBS2 is used to indicate whether the MBS2 session information in the MBS multicast configuration information sent to Cell1 is the same as the MBS2 session information in the MBS multicast configuration information sent to Cell2, Cell3, and Cell4. If they are the same, when UE1 moves from Cell1 to Cell2, Cell3, and Cell4, it can directly use the MBS2 session information under Cell1 to receive MBS2.

[0120] In one embodiment of the present invention, the process of the network device sending the indication information includes:

[0121] Multicast MCCH information is sent to the user equipment, where the multicast MCCH information carries indication information.

[0122] In one embodiment of the present invention, the process of sending multicast MCCH information to user equipment includes:

[0123] A specific radio network temporary identifier is used to scramble the PDCCH that schedules the multicast MCCH information. The multicast MCCH information carries indication information, which is used to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

[0124] In one embodiment of the present invention, the process of the user equipment receiving the indication information includes:

[0125] Receive multicast MCCH information from the network device and obtain indication information carried by the multicast MCCH information.

[0126] In one embodiment of the present invention, the process of receiving multicast MCCH information from a network device includes:

[0127] Use a specific radio network temporary identifier to monitor PDCCH, receive multicast MCCH information according to the scheduling information in PDCCH, and obtain indication information carried by the multicast MCCH information. The indication information is used to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

[0128] In one embodiment of the present invention, the multicast MCCH information includes MBS multicast configuration information of the serving cell;

[0129] MBS multicast configuration information includes:

[0130] At least one MBS session information, each MBS session information corresponding to a multicast service, the indication information being independent of the MBS session information of the serving cell, or the indication information being in the MBS session information of the serving cell;

[0131] and / or

[0132] A neighboring cell list, where the neighboring cell list includes at least one neighboring cell identifier, and the neighboring cell provides at least one multicast service that is the same as that of the serving cell;

[0133] The indication information is associated with the multicast service and the neighboring cell to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

[0134] Specifically, the network device uses a specific wireless network temporary identifier to scramble the PDCCH that schedules the multicast MCCH information, and the multicast MCCH information carries indication information to send the indication information to the user equipment. The specific wireless network temporary identifier can be SC-RNTI, Multicast-RNTI, or other scrambling codes. The multicast MCCH information carries MBS multicast configuration information, and the MBS multicast configuration information can include MBS session information. The indication information can be in the MBS session information, outside the MBS session information and in the MBS multicast configuration information, or outside the MBS multicast configuration information. The indication information is associated one-to-one with the multicast service to indicate whether the MBS session information of each multicast service in the serving cell is the same as the MBS session information in the adjacent cell. The data structure of the indication information can be represented as follows:

[0135] Multicast-NeighbourCell BIT STRING(SIZE(maxNeighCellMBS))

[0136] Among them, Multicast-NeighbourCell is indication information, and maxNeighCellMBS can be the number of neighboring cells. The total number of neighboring cells depends on the neighboring cell list. Accordingly, the data structure of the neighboring cell list can be expressed as follows:

[0137] If the indication information is in the MBS session information, the corresponding data structure can be expressed as:

[0138] Among them, MBS-SessionInfo is MBS session information, and Multicast-NeighbourCell is indication information.

[0139] If the indication information is independent of the MBS session information, the corresponding data structure can be expressed as:

[0140] Among them, MBS-SessionInfo is the MBS session information, Multicast-NeighbourCell is the indication information, mbs-SessionId is the MBS session ID corresponding to the multicast service, and the MBS session information MBS-SessionInfo and the indication information Multicast-NeighbourCell are both associated with mbs-SessionId to indicate whether the MBS session information of the corresponding multicast service in the serving cell is the same as the MBS session information of the neighboring cell.

[0141] For example, when there is a base station in the system, the base station covers four cells Cell1, Cell2, Cell3, and Cell4, and these four cells all receive the multicast service MBS1. When UE1 in the serving cell Cell1 receives MBS1 in the RRC inactive state, the network device may periodically send a system message or dedicated signaling, and the system message or dedicated signaling carries multicast MCCH configuration information. The multicast MCCH configuration information indicates the use of a specific wireless network temporary identifier to scramble the PDCCH for scheduling the multicast MCCH information. Accordingly, the user equipment UE1 monitors the PDCCH scrambled by the specific wireless network temporary identifier, obtains the periodically sent multicast MCCH information, and receives the indication information. The indication information may be as follows:

[0142] When the MBS1 indication information is in the MBS1 session information of the MBS multicast configuration information:

[0143] The total number of bits of the indication information may be 0, indicating that the MBS1 session information in all neighboring cells Cell2, Cell3, and Cell4 is the same as the MBS1 session information in Cell1, that is, the Multicast-NeighbourCell item is defaulted. The corresponding data structure is as follows:

[0144] The total number of bits of the indication information may also be 1 bit, which is used to indicate that the MBS1 session information in all adjacent cells Cell2, Cell3, and Cell4 is the same as the MBS1 session information in Cell1. In this case, if the first value assignment method is used, it can be represented as "0". The corresponding data structure is as follows:

[0145] The value of the Multicast-NeighbourCell is 0.

[0146] The total number of bits of the indication information may also be the total number of adjacent cells providing multicast services. Each bit is used to indicate that the MBS1 session information in the corresponding adjacent cells Cell2, Cell3, and Cell4 is the same as the MBS1 session information in Cell1. In this case, if the first assignment method described above is adopted, it can be represented as "000". The corresponding data structure is as follows:

[0147] The value of the Multicast-NeighbourCell mentioned above is 000.

[0148] The total number of bits of the indication information may also be the total number of neighboring cells, and the bits corresponding to the neighboring cells providing multicast services are used to indicate whether the MBS session information of the neighboring cells is the same as the MBS session information of the serving cell. Based on the above embodiment, if Cell1, Cell2, and Cell3 all receive MBS1 and MBS2, and Cell4 receives MBS2 and MBS3, then an analysis is performed on UE1 receiving MBS1 in Cell1. Cell1 is a serving cell, Cell2, Cell3, and Cell4 are all neighboring cells, and Cell2 and Cell3 are neighboring cells that provide the corresponding multicast service MBS1. If the MBS1 session information in Cell2 and Cell3 is the same as the MBS1 session information in Cell1, the first assignment method described above is adopted, that is, the bit portion corresponding to the neighboring cells Cell2 and Cell3 that provide the multicast service can be represented as "00", and the bit portion corresponding to the neighboring cell that does not provide the multicast service can be arbitrarily represented as "1" or "0". Finally, the indication information is represented as "000" or "100", and the corresponding data structure is as follows:

[0149] The value of the Multicast-NeighbourCell is 000 or 100.

[0150] When the MBS1 indication information is independent of the MBS1 session information in the MBS multicast configuration information:

[0151] The total number of bits of the indication information may be 0, indicating that the MBS1 session information in all neighboring cells Cell2, Cell3, and Cell4 is the same as the MBS1 session information in Cell1, that is, the Multicast-NeighbourCell item is defaulted. The corresponding data structure is as follows:

[0152] The total number of bits of the indication information may also be 1 bit, which is used to indicate that the MBS1 session information in all adjacent cells Cell2, Cell3, and Cell4 is the same as the MBS1 session information in Cell1. In this case, if the first value assignment method is used, it can be represented as "0". The corresponding data structure is as follows:

[0153] The value of the Multicast-NeighbourCell is 0.

[0154] The total number of bits of the indication information may also be the total number of adjacent cells providing multicast services. Each bit is used to indicate that the MBS1 session information in the corresponding adjacent cells Cell2, Cell3, and Cell4 is the same as the MBS1 session information in Cell1. In this case, if the first assignment method described above is adopted, it can be represented as "000". The corresponding data structure is as follows:

[0155] The value of the Multicast-NeighbourCell mentioned above is 000.

[0156] The total number of bits of the indication information may also be the total number of neighboring cells, and the bits corresponding to the neighboring cells providing multicast services are used to indicate whether the MBS session information of the neighboring cells is the same as the MBS session information of the serving cell. Based on the above embodiment, if Cell1, Cell2, and Cell3 all receive MBS1 and MBS2, and Cell4 receives MBS2 and MBS3, then an analysis is performed on UE1 receiving MBS1 in Cell1. Cell1 is a serving cell, Cell2, Cell3, and Cell4 are all neighboring cells, and Cell2 and Cell3 are neighboring cells that provide the corresponding multicast service MBS1. If the MBS1 session information in Cell2 and Cell3 is the same as the MBS1 session information in Cell1, the first assignment method described above is adopted, that is, the bit portion corresponding to the neighboring cells Cell2 and Cell3 that provide the multicast service can be represented as "00", and the bit portion corresponding to the neighboring cell that does not provide the multicast service can be arbitrarily represented as "1" or "0". Finally, the indication information is represented as "000" or "100", and the corresponding data structure is as follows:

[0157] The value of the Multicast-NeighbourCell is 000 or 100.

[0158] It should be noted that the MBS multicast configuration information may include multiple MBS session information, each MBS session information corresponds to a multicast service, and each indication information is also used to indicate whether the MBS session information of the corresponding multicast service in the serving cell is the same as the MBS session information of the adjacent cell. For example, when there is a base station in the system, the base station covers four cells, and these four Cell1, Cell2, Cell3, and Cell4 all receive multicast services MBS1 and MBS2. Among them, UE1 in Cell1 receives MBS1 and MBS2 in the RRC inactive state. At this time, for UE1 to receive multicast services, Cell1 is the serving cell, Cell2, Cell3, and Cell4 are neighboring cells, and the MBS multicast configuration information sent by the base station to Cell1 includes MBS1 session information and MBS2 session information. After UE1 receives the MBS multicast configuration information, it will be configured according to the MBS1 session information and MBS2 session information to respectively realize the reception of MBS1 and MBS2. Accordingly, the base station generates indication information corresponding to MBS1 and indication information corresponding to MBS2, and the indication information corresponding to MBS1 is used for It indicates whether the MBS1 session information in the MBS multicast configuration information sent to Cell1 is the same as the MBS1 session information in the MBS multicast configuration information sent to Cell2, Cell3, and Cell4. If they are the same, when UE1 moves from Cell1 to Cell2, Cell3, and Cell4, it can directly use the MBS1 session information under Cell1 to receive MBS1. The indication information corresponding to MBS2 is used to indicate whether the MBS2 session information in the MBS multicast configuration information sent to Cell1 is the same as the MBS2 session information in the MBS multicast configuration information sent to Cell2, Cell3, and Cell4. If they are the same, when UE1 moves from Cell1 to Cell2, Cell3, and Cell4, it can directly use the MBS2 session information under Cell1 to receive MBS2.

[0159] In one embodiment of the present invention, the process of the network device sending the indication information includes:

[0160] A dedicated message is sent to the user equipment, where the dedicated message carries indication information.

[0161] In one embodiment of the present invention, the process of sending a dedicated message to a user equipment includes:

[0162] The G-RNTI is used to scramble the PDCCH of the dedicated message for scheduling. The dedicated message carries indication information for indicating whether the MBS session information of the multicast service corresponding to the G-RNTI in the serving cell is the same as the MBS session information of the neighboring cell.

[0163] In one embodiment of the present invention, the process of the user equipment receiving the indication information includes:

[0164] Receive a proprietary message carrying indication information from a network device, and obtain the indication information carried in the proprietary message.

[0165] In one embodiment of the present invention, the process of receiving a proprietary message from a network device includes:

[0166] Monitor the PDCCH scrambled by the G-RNTI and receive a dedicated message based on the scheduling information in the PDCCH. The dedicated message carries indication information to indicate whether the MBS session information of the multicast service corresponding to the G-RNTI in the serving cell is the same as the MBS session information of the neighboring cell.

[0167] Specifically, the network device can use the G-RNTI to scramble the PDCCH of the scheduling dedicated message. The dedicated message carries indication information to indicate whether the multicast service corresponding to the G-RNTI is the same as the MBS session information of the serving cell and the MBS session information of the neighboring cell. If they are the same, the user equipment receiving the dedicated message can use the MBS session information of the serving cell to directly receive the corresponding multicast service. The multicast service corresponding to the indication information can be determined by the G-RNTI. When the network device sends the indication information, the sending time of the indication information is flexible, the multicast service corresponding to the indication information is optional, and the neighboring cell indicated by the indication information is also optional.

[0168] Among them, when the indication information is 0 bit, it is used to indicate that the MBS session information of all neighboring cells is the same as that of the serving cell, the network device uses G-RNTI to scramble and call the PDCCH of the dedicated message, and the user equipment uses G-RNTI to monitor PDCCH and obtain the dedicated message. The user equipment can clearly know that the MBS session information of the multicast service corresponding to G-RNTI in the serving cell is the same as that in the neighboring cell; when the indication information is 0 bit, it indicates that the MBS session information of all neighboring cells is different from that of the serving cell, and the network device uses G-RNTI to scramble and call the dedicated message. The user equipment uses the G-RNTI to monitor the PDCCH of the message and obtains the proprietary message. The user equipment can clearly know that the multicast service corresponding to the G-RNTI is different from the MBS session information in the serving cell and the MBS session in the neighboring cell; when the indication information is 0 bits, indicating that all neighboring cells do not provide multicast services, the network equipment uses the G-RNTI to scramble and call the PDCCH of the proprietary message. The user equipment uses the G-RNTI to monitor the PDCCH and obtain the proprietary message. The user equipment can clearly know that all neighboring cells do not provide the multicast service corresponding to the G-RNTI.

[0169] Among them, when the total number of bits of the indication information is 1 bit, which is used to indicate whether the MBS session information of all neighboring cells is the same as that of the serving cell, the network device uses the G-RNTI to scramble and retrieve the PDCCH of the dedicated message, and the user equipment uses the G-RNTI to monitor the PDCCH and obtain the dedicated message. The user equipment can clearly determine whether the MBS session information of the multicast service corresponding to the G-RNTI in the serving cell is the same as the MBS session information in all neighboring cells.

[0170] Among them, when the total number of bits of the indication information can provide the total number of neighboring cells for multicast services, and each bit is used to indicate whether the MBS session information of the corresponding neighboring cell is the same as the MBS session information of the serving cell, the network device uses the G-RNTI to scramble and retrieve the PDCCH of the dedicated message, and the user equipment uses the G-RNTI to monitor the PDCCH and obtain the dedicated message. The user equipment can clearly determine whether the MBS session of the multicast service corresponding to the G-RNTI in the serving cell is the same as the MBS session information in each neighboring cell that provides the multicast service corresponding to the G-RNTI.

[0171] Among them, the total number of bits of the indication information can be the total number of neighboring cells. When the bits corresponding to the neighboring cells providing multicast services are used to indicate whether the MBS session information of the neighboring cells is the same as the MBS session information of the serving cell, the network device uses the G-RNTI to scramble and call the PDCCH of the dedicated message, and the user equipment uses the G-RNTI to monitor the PDCCH and obtain the dedicated message. For the bit portion of the neighboring cells providing the corresponding multicast services in the dedicated message, the user equipment can clearly determine whether the MBS session of the multicast service corresponding to the G-RNTI in the serving cell is the same as the MBS session information in each neighboring cell providing the multicast service corresponding to the G-RNTI. For the bit portion of the neighboring cells that do not provide the corresponding multicast services, the user equipment may not decode or read it, or may consider that the information indicated by these bits is meaningless.

[0172] It should be noted that the indication information may be an RRC layer message, a PDCP layer message, an RLC layer message, a MAC layer message, or a PHY layer message.

[0173] The present invention also provides a multicast configuration indication device, as shown in FIG3 , comprising:

[0174] Generate module 1, including:

[0175] A first generating unit 11 is configured to generate MBS multicast configuration information of a serving cell, where the MBS multicast configuration information includes MBS session information corresponding to a multicast service, so that when a user equipment in an RRC inactive state receives a multicast service in the serving cell, the user equipment receives the multicast service using the MBS session information in the MBS multicast configuration information of the serving cell;

[0176] a second generating unit 12, configured to generate indication information, the indication information being used to indicate whether the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the serving cell and the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the neighboring cell are the same;

[0177] The sending module 2 is used to send the MBS multicast configuration information and indication information of the serving cell to the user equipment. If the MBS session information of the serving cell and the neighboring cell is the same, when the user equipment moves from the serving cell to the neighboring cell, it will continue to receive the multicast service with the MBS session information of the serving cell.

[0178] In one embodiment of the present invention, the total number of bits of the indication information is 0 bits, which is used to indicate whether the MBS session information of all neighboring cells is the same as that of the serving cell, or to indicate that the serving cell does not provide the MBS session information in the neighboring cells; or that all neighboring cells do not provide multicast services; or

[0179] The total number of bits of the indication information is 1 bit, which is used to indicate whether the MBS session information of all neighboring cells is the same as that of the serving cell; or

[0180] The total number of bits in the indication information is the total number of neighboring cells providing multicast services, and each bit is used to indicate whether the MBS session information of the corresponding neighboring cell is the same as the MBS session information of the serving cell; or

[0181] The total number of bits of the indication information is the total number of neighboring cells, and the bits corresponding to the neighboring cells providing multicast services are used to indicate whether the MBS session information of the neighboring cells is the same as the MBS session information of the serving cell.

[0182] In one embodiment of the present invention, each bit in the indication information is assigned a value of 0 or 1 to indicate whether the MBS session information of the serving cell is the same as or different from the MBS session information of the neighboring cell, or whether the neighboring cell does not provide multicast services.

[0183] In one embodiment of the present invention, the sending module may include:

[0184] The first sending unit is configured to send an RRC connection release message to the user equipment, where the RRC connection release message carries indication information.

[0185] In one embodiment of the present invention, the sending module may include:

[0186] The second sending unit is configured to send multicast MCCH information to the user equipment, where the multicast MCCH information carries indication information.

[0187] In one embodiment of the present invention, the sending module may include:

[0188] The third sending unit is configured to send a dedicated message carrying the indication information to the user equipment, so as to directly send the indication information.

[0189] In one embodiment of the present invention, the third sending unit includes:

[0190] The G-RNTI is used to scramble the PDCCH of the dedicated message for scheduling. The dedicated message carries indication information for indicating whether the MBS session information of the multicast service corresponding to the G-RNTI in the serving cell is the same as the MBS session information of the neighboring cell.

[0191] In one embodiment of the present invention, the first sending unit may include:

[0192] The PDCCH of the RRC connection release message is scrambled using the C-RNTI corresponding to the user equipment. The RRC connection release message carries indication information, which is used to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

[0193] In one embodiment of the present invention, the second sending unit may include:

[0194] A specific radio network temporary identifier is used to scramble the PDCCH that schedules the multicast MCCH information. The multicast MCCH information carries indication information, which is used to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

[0195] In one embodiment of the present invention, the RRC connection release message and / or the multicast MCCH information includes MBS multicast configuration information of the serving cell;

[0196] MBS multicast configuration information includes:

[0197] At least one MBS session information, each MBS session information corresponding to a multicast service, the indication information being independent of the MBS session information of the serving cell, or the indication information being in the MBS session information of the serving cell;

[0198] and / or

[0199] A neighboring cell list, where the neighboring cell list includes at least one neighboring cell identifier, and the neighboring cell provides at least one multicast service that is the same as that of the serving cell;

[0200] The indication information is associated with the multicast service and the neighboring cell to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

[0201] The present invention also provides a multicast configuration indication device, as shown in FIG4 , comprising:

[0202] a receiving module 3, configured to receive MBS multicast configuration information of a serving cell, the MBS multicast configuration information including MBS session information corresponding to a multicast service, so that when a user equipment in an RRC inactive state receives a multicast service in the serving cell, the user equipment receives the multicast service using the MBS session information in the MBS multicast configuration information of the serving cell; and

[0203] receiving indication information, where the indication information is used to indicate whether the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the serving cell and the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the neighboring cell are the same;

[0204] Processing module 4: If the MBS session information of the serving cell and the neighboring cell is the same, when the user equipment moves from the serving cell to the neighboring cell, it will continue to receive the multicast service using the MBS session information of the serving cell.

[0205] In one embodiment of the present invention, the total number of bits of the indication information is 0 bits, which is used to indicate whether the MBS session information of all neighboring cells is the same as that of the serving cell, or to indicate that the serving cell does not provide the MBS session information in the neighboring cells; or that all neighboring cells do not provide multicast services; or

[0206] The total number of bits of the indication information is 1 bit, which is used to indicate whether the MBS session information of all neighboring cells is the same as that of the serving cell; or

[0207] The total number of bits in the indication information is the total number of neighboring cells providing multicast services, and each bit is used to indicate whether the MBS session information of the corresponding neighboring cell is the same as the MBS session information of the serving cell; or

[0208] The total number of bits of the indication information is the total number of neighboring cells, and the bits corresponding to the neighboring cells providing multicast services are used to indicate whether the MBS session information of the neighboring cells is the same as the MBS session information of the serving cell.

[0209] In one embodiment of the present invention, each bit in the indication information is assigned a value of 0 or 1 to indicate whether the MBS session information of the serving cell is the same as or different from the MBS session information of the neighboring cell, or whether the neighboring cell does not provide multicast services.

[0210] In one embodiment of the present invention, the receiving module may include:

[0211] The first receiving unit is configured to receive an RRC connection release message from a network device and obtain indication information carried in the RRC connection release message.

[0212] In one embodiment of the present invention, the receiving module may include:

[0213] The second receiving unit is configured to receive multicast MCCH information from a network device and obtain indication information carried in the multicast MCCH information.

[0214] In one embodiment of the present invention, the receiving module may include:

[0215] The third receiving unit is configured to send a dedicated message carrying the indication information to the user equipment, so as to directly send the indication information.

[0216] In one embodiment of the present invention, the third receiving unit includes:

[0217] Monitor the PDCCH scrambled by the G-RNTI and receive a dedicated message based on the scheduling information in the PDCCH. The dedicated message carries indication information to indicate whether the MBS session information of the multicast service corresponding to the G-RNTI in the serving cell is the same as the MBS session information of the neighboring cell.

[0218] In one embodiment of the present invention, the first receiving unit includes:

[0219] Monitor the PDCCH scrambled by the C-RNTI, receive the PDCCH of the RRC connection release message according to the scheduling information in the PDCCH, and obtain the indication information carried by the RRC connection release message. The indication information is used to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

[0220] In one embodiment of the present invention, the second receiving unit includes:

[0221] Use a specific radio network temporary identifier to monitor PDCCH, receive multicast MCCH information according to the scheduling information in PDCCH, and obtain indication information carried by the multicast MCCH information. The indication information is used to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

[0222] In one embodiment of the present invention, the RRC connection release message and / or the multicast MCCH information includes MBS multicast configuration information of the serving cell;

[0223] MBS multicast configuration information includes:

[0224] At least one MBS session information, each MBS session information corresponding to a multicast service, the indication information being independent of the MBS session information of the serving cell, or the indication information being in the MBS session information of the serving cell;

[0225] and / or

[0226] A neighboring cell list, where the neighboring cell list includes at least one neighboring cell identifier, and the neighboring cell provides at least one multicast service that is the same as that of the serving cell;

[0227] The indication information is associated with the multicast service and the neighboring cell to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

[0228] 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.

[0229] 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.

[0230] 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.

[0231] 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)).

[0232] 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.

[0233] 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 configuration indication method, characterized in that: The method is performed by a network device, and the method includes: Generate MBS multicast configuration information of the serving cell, the MBS multicast configuration information including MBS session information corresponding to the multicast service, so that when a user equipment in an RRC inactive state receives the multicast service in the serving cell, the user equipment receives the multicast service using the MBS session information in the MBS multicast configuration information of the serving cell; generating indication information, the indication information being used to indicate whether the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the serving cell and the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the neighboring cell are the same; The MBS multicast configuration information of the serving cell and the indication information are sent to the user equipment. If the MBS session information of the serving cell and the neighboring cell is the same, when the user equipment moves from the serving cell to the neighboring cell, it will continue to receive the multicast service with the MBS session information of the serving cell.

2. The multicast configuration indication method according to claim 1, characterized in that: The total number of bits of the indication information is 0 bits, which is used to indicate whether the MBS session information of all neighboring cells is the same as that of the serving cell, or to indicate that the serving cell does not provide the MBS session information in the neighboring cells; or to indicate that all neighboring cells do not provide the multicast service; or The total number of bits of the indication information is 1 bit, which is used to indicate whether the MBS session information of all neighboring cells is the same as that of the serving cell; or The total number of bits of the indication information is the total number of neighboring cells providing the multicast service, and each bit is used to indicate whether the MBS session information of the corresponding neighboring cell is the same as the MBS session information of the serving cell; or The total number of bits of the indication information is the total number of neighboring cells, and the bits corresponding to the neighboring cells providing the multicast service are used to indicate whether the MBS session information of the neighboring cells is the same as the MBS session information of the serving cell.

3. The multicast configuration indication method according to claim 1 or 2, characterized in that: Each bit in the indication information is assigned a value of 0 or 1 to indicate that the MBS session information of the serving cell is the same as or different from the MBS session information of the neighboring cell, or that the neighboring cell does not provide the multicast service.

4. The multicast configuration indication method according to claim 1, characterized in that: The process of the network device sending the indication information includes: Sending an RRC connection release message to the user equipment, where the RRC connection release message carries the indication information; and / or Sending multicast MCCH information to the user equipment, where the multicast MCCH information carries the indication information; and / or A dedicated message is sent to the user equipment, where the dedicated message carries the indication information.

5. The multicast configuration indication method according to claim 1, 2 or 4, characterized in that: The process of sending a proprietary message to a user device includes: The PDCCH that schedules the dedicated message is scrambled using the G-RNTI, and the dedicated message carries the indication information, which is used to indicate whether the MBS session information of the multicast service corresponding to the G-RNTI in the serving cell is the same as the MBS session information of the neighboring cell.

6. The multicast configuration indication method according to claim 1, 2 or 4, characterized in that: The process of sending the RRC connection release message and / or the multicast MCCH information to the user equipment includes: The PDCCH that schedules the RRC connection release message is scrambled using the C-RNTI corresponding to the user equipment, and / or the PDCCH that schedules the multicast MCCH information is scrambled using a specific wireless network temporary identifier, the RRC connection release message and / or the multicast MCCH information carries the indication information, and the indication information is used to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the adjacent cell.

7. The multicast configuration indication method according to claim 6, characterized in that: The RRC connection release message and / or the multicast MCCH information includes MBS multicast configuration information of the serving cell; The MBS multicast configuration information includes: at least one MBS session information, each MBS session information corresponds to a multicast service, the indication information is independent of the MBS session information of the serving cell, or the indication information is in the MBS session information of the serving cell; and / or A neighboring cell list, the neighboring cell list comprising at least one neighboring cell identifier, the neighboring cell providing at least one multicast service that is the same as that of the serving cell; The indication information is associated with the multicast service and the neighboring cell to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

8. A multicast configuration indication method, characterized in that: The method is performed by a user equipment, and the method includes: Acquire MBS multicast configuration information of the serving cell, the MBS multicast configuration information including MBS session information corresponding to the multicast service, so that when a user equipment in an RRC inactive state receives the multicast service in the serving cell, the user equipment receives the multicast service using the MBS session information in the MBS multicast configuration information of the serving cell; Acquire indication information, where the indication information is used to indicate whether the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the serving cell and the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the neighboring cell are the same; If the MBS session information of the serving cell and the neighboring cell is the same, when the user equipment moves from the serving cell to the neighboring cell, it will continue to receive the multicast service with the MBS session information of the serving cell.

9. The multicast configuration indication method according to claim 8, characterized in that: The total number of bits of the indication information is 0 bits, which is used to indicate whether the MBS session information of all neighboring cells is the same as that of the serving cell, or to indicate that the serving cell does not provide the MBS session information in the neighboring cells; or to indicate that all neighboring cells do not provide the multicast service; or The total number of bits of the indication information is 1 bit, which is used to indicate whether the MBS session information of all neighboring cells is the same as that of the serving cell; or The total number of bits of the indication information is the total number of neighboring cells providing the multicast service, and each bit is used to indicate whether the MBS session information of the corresponding neighboring cell is the same as the MBS session information of the serving cell; or The total number of bits of the indication information is the total number of neighboring cells, and the bits corresponding to the neighboring cells providing the multicast service are used to indicate whether the MBS session information of the neighboring cells is the same as the MBS session information of the serving cell.

10. The multicast configuration indication method according to claim 8 or 9, characterized in that: Each bit in the indication information is assigned a value of 0 or 1 to indicate that the MBS session information of the serving cell is the same as or different from the MBS session information of the neighboring cell, or that the neighboring cell does not provide the multicast service.

11. The multicast configuration indication method according to claim 8, characterized in that: The process of the user equipment receiving the indication information includes: Receiving an RRC connection release message from a network device, and acquiring the indication information carried by the RRC connection release message; and / or Receiving multicast MCCH information from a network device, and acquiring the indication information carried by the multicast MCCH information; and / or A dedicated message carrying the indication information is received from a network device, and the indication information carried by the dedicated message is acquired.

12. The multicast configuration indication method according to claim 8, 9 or 11, characterized in that: The process of receiving proprietary messages from network devices, including: Monitor the PDCCH scrambled by the G-RNTI, and receive the dedicated message according to the scheduling information in the PDCCH, wherein the dedicated message carries the indication information, which is used to indicate whether the MBS session information of the multicast service corresponding to the G-RNTI in the serving cell is the same as the MBS session information of the adjacent cell.

13. The multicast configuration indication method according to claim 8, 9 or 11, characterized in that: The process of receiving the RRC connection release message and / or the multicast MCCH information from the network device includes: Monitor the PDCCH scrambled by the C-RNTI, receive the PDCCH of the RRC connection release message according to the scheduling information in the PDCCH, and / or use a specific radio network temporary identifier to monitor the PDCCH, and receive the PDCCH of the RRC connection release message according to the scheduling information in the PDCCH. The multicast MCCH information is received by the user equipment, and the indication information carried by the RRC connection release message and / or the multicast MCCH information is obtained, where the indication information is used to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

14. The multicast configuration indication method according to claim 13, characterized in that: The RRC connection release message and / or the multicast MCCH information includes MBS multicast configuration information of the serving cell; The MBS multicast configuration information includes: at least one MBS session information, each MBS session information corresponds to a multicast service, the indication information is independent of the MBS session information of the serving cell, or the indication information is in the MBS session information of the serving cell; and / or A neighboring cell list, the neighboring cell list comprising at least one neighboring cell identifier, the neighboring cell providing at least one multicast service that is the same as that of the serving cell; The indication information is associated with the multicast service and the neighboring cell to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

15. A multicast configuration indication device, characterized in that: include: Generate modules, including: A first generating unit is configured to generate MBS multicast configuration information of a serving cell, wherein the MBS multicast configuration information includes MBS session information corresponding to a multicast service, so that when a user equipment in an RRC inactive state receives the multicast service in the serving cell, the user equipment receives the multicast service using the MBS session information in the MBS multicast configuration information of the serving cell; a second generating unit, configured to generate indication information, wherein the indication information is used to indicate whether the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the serving cell and the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the neighboring cell are the same; A sending module is used to send the MBS multicast configuration information of the serving cell and the indication information to the user equipment. If the MBS session information of the serving cell and the neighboring cell is the same, when the user equipment moves from the serving cell to the neighboring cell, it will continue to receive the multicast service with the MBS session information of the serving cell.

16. The multicast configuration indicating device according to claim 15, characterized in that: The total number of bits of the indication information is 0 bits, which is used to indicate whether the MBS session information of all neighboring cells is the same as that of the serving cell, or to indicate that the serving cell does not provide the MBS session information in the neighboring cells; or to indicate that all neighboring cells do not provide the multicast service; or The total number of bits of the indication information is 1 bit, which is used to indicate whether the MBS session information of all neighboring cells is the same as that of the serving cell; or The total number of bits of the indication information is the total number of neighboring cells providing the multicast service, and each bit is used to indicate Indicates whether the MBS session information of the corresponding neighboring cell is the same as the MBS session information of the serving cell; or The total number of bits of the indication information is the total number of neighboring cells, and the bits corresponding to the neighboring cells providing the multicast service are used to indicate whether the MBS session information of the neighboring cells is the same as the MBS session information of the serving cell.

17. The multicast configuration indicating device according to claim 15 or 16, characterized in that: Each bit in the indication information is assigned a value of 0 or 1 to indicate that the MBS session information of the serving cell is the same as or different from the MBS session information of the neighboring cell, or that the neighboring cell does not provide the multicast service.

18. The multicast configuration indicating device according to claim 15, characterized in that: The sending module includes: A first sending unit, configured to send an RRC connection release message to a user equipment, where the RRC connection release message carries the indication information; and / or A second sending unit, configured to send multicast MCCH information to the user equipment, where the multicast MCCH information carries the indication information; and / or The third sending unit is used to send a dedicated message carrying the indication information to the user equipment, so as to directly send the indication information.

19. The multicast configuration indicating device according to claim 15, 16 or 18, characterized in that: The third sending unit includes: The PDCCH that schedules the dedicated message is scrambled using the G-RNTI, and the dedicated message carries the indication information, which is used to indicate whether the MBS session information of the multicast service corresponding to the G-RNTI in the serving cell is the same as the MBS session information of the neighboring cell.

20. The multicast configuration indicating device according to claim 15, 16 or 18, characterized in that: The first sending unit includes: using the C-RNTI corresponding to the user equipment to scramble the PDCCH that schedules the RRC connection release message, wherein the RRC connection release message carries the indication information, wherein the indication information is used to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell; and / or The second sending unit includes: A PDCCH for scheduling the multicast MCCH information is scrambled using a specific radio network temporary identifier. The multicast MCCH information carries the indication information. The indication information is used to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

21. The multicast configuration indicating device according to claim 20, characterized in that: The RRC connection release message and / or the multicast MCCH information includes MBS multicast configuration information of the serving cell; The MBS multicast configuration information includes: at least one MBS session information, each MBS session information corresponds to a multicast service, the indication information is independent of the MBS session information of the serving cell, or the indication information is in the MBS session information of the serving cell; and / or A neighboring cell list, the neighboring cell list comprising at least one neighboring cell identifier, the neighboring cell providing at least one multicast service that is the same as that of the serving cell; The indication information is associated with the multicast service and the neighboring cell to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

22. A multicast configuration indication device, characterized in that: include: a receiving module, configured to receive MBS multicast configuration information of a serving cell, wherein the MBS multicast configuration information includes MBS session information corresponding to a multicast service, so that when a user equipment in an RRC inactive state receives the multicast service in the serving cell, the user equipment receives the multicast service using the MBS session information in the MBS multicast configuration information of the serving cell; as well as receiving indication information, where the indication information is used to indicate whether the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the serving cell and the MBS session information corresponding to the multicast service in the MBS multicast configuration information of the neighboring cell are the same; The processing module, if the MBS session information of the serving cell and the neighboring cell is the same, when the user equipment moves from the serving cell to the neighboring cell, it will continue to receive the multicast service with the MBS session information of the serving cell.

23. The multicast configuration indicating device according to claim 22, characterized in that: The total number of bits of the indication information is 0 bits, which is used to indicate whether the MBS session information of all neighboring cells is the same as that of the serving cell, or to indicate that the serving cell does not provide the MBS session information in the neighboring cells; or to indicate that all neighboring cells do not provide the multicast service; or The total number of bits of the indication information is 1 bit, which is used to indicate whether the MBS session information of all neighboring cells is the same as that of the serving cell; or The total number of bits of the indication information is the total number of neighboring cells providing the multicast service, and each bit is used to indicate whether the MBS session information of the corresponding neighboring cell is the same as the MBS session information of the serving cell; or The total number of bits of the indication information is the total number of neighboring cells, and the bits corresponding to the neighboring cells providing the multicast service are used to indicate whether the MBS session information of the neighboring cells is the same as the MBS session information of the serving cell.

24. The multicast configuration indicating device according to claim 22 or 23, characterized in that: Each bit in the indication information is assigned a value of 0 or 1 to indicate that the MBS session information of the serving cell is the same as or different from the MBS session information of the neighboring cell, or that the neighboring cell does not provide the multicast service.

25. The multicast configuration indicating device according to claim 22, characterized in that: The receiving module includes: A first receiving unit, configured to receive an RRC connection release message from a network device, and obtain the indication information carried by the RRC connection release message; and / or A second receiving unit, configured to receive multicast MCCH information from a network device, and obtain the indication information carried by the multicast MCCH information; and / or The third receiving unit is used to send a dedicated message carrying the indication information to the user equipment, so as to directly send the indication information.

26. The multicast configuration indicating device according to claim 22, 23 or 25, characterized in that: The third receiving unit comprises: Monitor the PDCCH scrambled by the G-RNTI, and receive the dedicated message according to the scheduling information in the PDCCH, wherein the dedicated message carries the indication information, which is used to indicate whether the MBS session information of the multicast service corresponding to the G-RNTI in the serving cell is the same as the MBS session information of the adjacent cell.

27. The multicast configuration indication method according to claim 22, 23 or 25, characterized in that: The first receiving unit comprises: Monitor the PDCCH encrypted by the C-RNTI, receive the PDCCH of the RRC connection release message according to the scheduling information in the PDCCH, and obtain the indication information carried by the RRC connection release message, wherein the indication information is used to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell. and / or The second receiving unit comprises: Use a specific wireless network temporary identifier to monitor PDCCH, receive the multicast MCCH information according to the scheduling information in the PDCCH, and obtain the indication information carried by the multicast MCCH information, wherein the indication information is used to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the adjacent cell.

28. The multicast configuration indicating device according to claim 27, characterized in that: The RRC connection release message and / or the multicast MCCH information includes MBS multicast configuration information of the serving cell; The MBS multicast configuration information includes: at least one MBS session information, each MBS session information corresponds to a multicast service, the indication information is independent of the MBS session information of the serving cell, or the indication information is in the MBS session information of the serving cell; and / or A neighboring cell list, wherein the neighboring cell list includes at least one neighboring cell identifier, and the neighboring cell at least Provide a multicast service that is the same as that of the serving cell; The indication information is associated with the multicast service and the neighboring cell to indicate whether the MBS session information of the user equipment in the serving cell is the same as the MBS session information of the neighboring cell.

29. 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 method according to any one of claims 1 to 7.

30. 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 8 to 14.

31. 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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