Indication information sending method and apparatus, indication information receiving method and apparatus, device and storage medium

Abstract

The present application relates to the technical field of communications, and provides an indication information sending method and apparatus, an indication information receiving method and apparatus, a device and a storage medium. The indication information sending method comprises: generating indication information, the indication information being used for indicating whether a neighbor cell supports providing a multicast service, which is performed in the current cell, in a point to point (PTP) transmission mode and / or a point to multipoint (PTM) transmission mode; and sending the indication information to a user equipment. According to the technical solution, by sending the indication information, whether the neighbor cell supports the PTP transmission mode and the PTM transmission mode or not is indicated to the user equipment, so that a terminal can correctly understand the multicast service transmission capability of the neighbor cell, a correct operation can be executed in a proper neighbor cell, and the reliability and continuity of the multicast service are improved.

Description

Method, device, equipment and storage medium for sending and receiving indication information Technical Field

[0001] The embodiments of the present application relate to the field of communication technologies, and in particular to a method, apparatus, device, and storage medium for sending and receiving indication information. Background Art

[0002] With the rapid development of the Internet and the widespread adoption of large-screen, multi-function terminals, a large number of mobile data multimedia services and various high-bandwidth multimedia services have emerged, such as video conferencing, television broadcasting, video on demand, advertising, online education, and interactive games. These services not only meet the multi-service needs of mobile users but also provide new growth opportunities for mobile operators. These mobile data multimedia services require multiple users to simultaneously receive the same data. Compared to conventional data services, they feature large data volumes, long durations, and low latency. To effectively utilize mobile network resources, the Third Generation Partnership Project (3GPP) proposed Multicast Broadcast Multimedia Service (MBMS). This service is a technology that transmits data from a single source to multiple destination terminals, enabling the sharing of network resources (including core and access networks) and improving network resource utilization. MBMS technology studied in Long Term Evolution (LTE) systems is called evolved Multicast Broadcast Multimedia Service (E-MBMS). To further develop eMBMS in 5G systems and enhance the capabilities of the entire broadcast system, thereby supporting higher-speed and more efficient 5G broadcast application scenarios, such as future high-quality multimedia services such as 4K / 8K ultra-high-definition video, 3D stereoscopic video, multi-view video, VR (virtual reality) / AR (augmented reality), etc., which will greatly promote the future expansion of broadcasting and television to mobile terminals and bring prosperity to the high-definition video market, 3GPP has established a NR MBS research project.

[0003] However, for multicast services (Multicast) being carried out in the current cell, it is currently not possible to reasonably indicate the transmission mode through which the adjacent cell can provide the service, which may lead to incorrect understanding and operation by the terminal. For example, when switching to a neighboring cell, if the terminal expects to receive the service via PTP (Point to Point) transmission, it may need to prepare to restore to RRC_CONNECTED (Radio Resource Control CONNECTED) or may need to request unicast reception of the multicast service before moving to the neighboring cell. For example, during the process of cell reselection, the terminal may make an incorrect decision due to the inability to obtain valid instructions, and may not be able to select a neighboring cell that supports PTP transmission mode. After entering the neighboring cell, it will not be able to promptly or successfully receive the multicast service, which will lead to increased delay, reduced reliability and continuity in receiving the multicast service in the neighboring cell.

[0004] Summary of the Invention

[0005] To address the above-mentioned problem of being unable to reasonably indicate to adjacent cells the transmission mode for providing multicast services, the present application provides a method, apparatus, device, and storage medium for sending and receiving indication information.

[0006] This embodiment of the present application provides a method for sending indication information, including:

[0007] Generate indication information, where the indication information is used to indicate whether the neighboring cell supports providing a multicast service in the current cell through a point-to-point PTP transmission mode and / or a point-to-multipoint (PTM) transmission mode;

[0008] The indication information is sent to the user equipment.

[0009] This embodiment of the present application provides a method for receiving indication information, including:

[0010] receiving indication information, the indication information being used to indicate whether the neighboring cell supports providing a multicast service in the current cell through a PTP transmission mode and / or a PTM transmission mode;

[0011] The multicast service is received according to the indication information.

[0012] An embodiment of the present application provides a device for sending indication information, including:

[0013] a generating module, configured to generate indication information, wherein the indication information is used to indicate whether the neighboring cell supports providing a multicast service in the current cell through a PTP transmission mode and / or a PTM transmission mode;

[0014] The information sending module is used to send the indication information to the user equipment.

[0015] An embodiment of the present application provides an indication information receiving device, including:

[0016] An information receiving module, configured to receive indication information, wherein the indication information is used to indicate whether the neighboring cell supports providing a multicast service in the current cell through a PTP transmission mode and / or a PTM transmission mode;

[0017] A receiving module is used to receive the multicast service according to the indication information.

[0018] An embodiment of the present application provides a network device, including:

[0019] one or more processors;

[0020] a storage device for storing one or more programs;

[0021] When the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned information sending method.

[0022] An embodiment of the present application provides a user equipment, including:

[0023] one or more processors;

[0024] a storage device for storing one or more programs;

[0025] When the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned information receiving method.

[0026] An embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the above-mentioned information sending method is implemented.

[0027] The embodiments of the present application provide a method, apparatus, device, and storage medium for sending and receiving indication information. The information sending method includes generating indication information, wherein the indication information is used to indicate whether the adjacent cell supports the multicast service provided in the current cell through the point-to-point PTP transmission mode and / or the point-to-multipoint PTM transmission mode; and sending the indication information to the user equipment. The above technical solution indicates to the user equipment whether the adjacent cell supports the PTP and PTM transmission modes by sending indication information, so that the terminal has a correct understanding of the multicast service transmission capability of the adjacent cell, and can then perform correct operations in the appropriate adjacent cell, thereby improving the reliability and continuity of the multicast service. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The features, advantages, and aspects of the various embodiments disclosed in this application will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the originals and elements are not necessarily drawn to scale.

[0029] FIG1 is a flowchart of a method for sending indication information provided by an embodiment of the present application;

[0030] FIG2 is a flow chart of a method for receiving indication information provided in an embodiment of the present application;

[0031] FIG3 is a schematic structural diagram of an indication information sending device provided in an embodiment of the present application;

[0032] FIG4 is a schematic structural diagram of an indication information receiving device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present application and are not intended to limit the present application. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions of the present application, not all of the structures.

[0034] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe the steps as sequential processes, many of the steps can be implemented in parallel, concurrently, or simultaneously. In addition, the order of the steps can be rearranged. The process can be terminated when its operation is completed, but can also have additional steps not included in the accompanying drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0035] It should be noted that the concepts of "first" and "second" mentioned in the embodiments of this application are only used to distinguish different devices, modules, units or other objects, and are not used to limit the order or interdependence of the functions performed by these devices, modules, units or other objects.

[0036] In addition, the embodiments and features in the embodiments of the present application may be combined with each other unless there is any conflict.

[0037] In wireless communication networks, two transmission modes are supported for more efficient multicast service transmission: PTP and PTM. PTP refers to data transmission from a transmitting node (e.g., a network device) to a single UE. This mode allows the network device to adjust the data bit rate based on the UE's channel conditions, improving service reliability and conserving network resources when there are fewer users receiving broadcast and multicast services. PTM refers to data transmission from a transmitting node to multiple UEs. This mode allows for lower data bit rates, which helps conserve network resources when there are more UEs receiving the service.

[0038] In some scenarios, the PTM transmission configuration can be sent to the user equipment (UE) via dedicated RRC signaling (RRC release message with suspend configuration), or via an MBS multicast control channel (MCCH), which is different from the MCCH used for broadcasting. This allows a UE in the RRC_INACTIVE state to receive the transmission configuration (PTM configuration) for the multicast service and enter the inactive state (RRC_INACTIVE). The configuration information of the MBS multicast control channel can be sent via a new System Information Block (SIB), which is different from the SIB20 used for broadcasting, or can be sent via dedicated signaling. The MBS multicast control channel can be referred to as the MBS multicast MCCH.

[0039] Before a UE in the RRC_INACTIVE state receives a multicast service, it needs to join a multicast session. The multicast session can be activated before, after, or while the UE in the RRC_INACTIVE state receives the MBS multicast configuration information used for the multicast service.

[0040] For multicast services in the current cell that can be received by UEs in the RRC_INACTIVE state, existing technologies only indicate whether neighboring cells can provide the multicast service on the Multicast Traffic Channel (MTCH) using the PTM transmission method, but fail to indicate whether the neighboring cell can provide the multicast service using the PTP transmission method. This can lead to UEs misinterpreting and misoperating, resulting in the inability to effectively transmit the multicast service. Furthermore, during cell reselection, the UE cannot obtain effective instructions and cannot comprehensively consider the capabilities of each neighboring cell, potentially making incorrect decisions. This can prevent the UE from selecting a neighboring cell that supports PTP transmission, resulting in the UE being unable to promptly or successfully receive the multicast service after entering the neighboring cell.

[0041] As an exemplary application scenario: if the adjacent cell can provide a multicast service carried out in the current cell through PTM transmission (the multicast service can be received by the UE in the RRC_INACTIVE state), the UE can obtain the MBS multicast configuration information, and then obtain the multicast service configuration information of the multicast service in the MBS multicast configuration information, and receive the multicast service according to the multicast service configuration information.

[0042] As an example, a possible operation is: if the neighboring cell cannot provide the above-mentioned multicast service through the PTM transmission mode (for example, the PTM transmission mode has not yet been activated for this multicast service), and for a small number of UEs, the network can provide the multicast service through the PTP transmission mode. In this case, if the UE receiving the multicast service in the RRC_INACTIVE state in the current cell reselects to the neighboring cell through the cell reselection process, the UE may need to prepare to restore to the RRC connected state (RRC_CONNECTED) and receive the multicast service through the PTP transmission mode in the neighboring cell.

[0043] As an example, another possible operation is: if the neighboring cell can provide the above-mentioned multicast service neither through the PTM transmission mode nor through the PTP transmission mode (for example, the neighboring cell is outside the multicast service transmission area), in this case, if the UE receiving the service in the RRC_INACTIVE state in the current cell reselects to the neighboring cell through the cell reselection process, and before the UE moves to the neighboring cell (or before establishing an RRC connection with the neighboring cell), it may be necessary to request unicast reception of the multicast service (i.e., PTP transmission mode) in order to receive the service through the PTP transmission mode in the neighboring cell.

[0044] As can be seen, when a neighboring cell cannot provide a certain multicast service via PTM transmission, the UE needs to perform different operations depending on whether the service can be provided via PTP transmission or not. However, because the existing technology does not yet indicate whether the neighboring cell can provide the multicast service via PTP transmission, the UE may misunderstand the following, which may lead to the following situations:

[0045] The neighboring cell is capable of providing the service through the PTP transmission mode, but the UE understands that the neighboring cell is not capable of providing the service through the PTP transmission mode;

[0046] The neighboring cell cannot provide the service through the PTP transmission mode, but the UE understands that the neighboring cell can provide the service through the PTP transmission mode;

[0047] In either of the above situations, the UE may make an erroneous operation, which may cause the UE to be unable to receive the multicast service in a timely or correct manner after entering the adjacent cell, thereby increasing the delay, reducing the reliability and continuity of the UE receiving the multicast service in the adjacent cell.

[0048] The UE (User Equipment) in the embodiments of the present application may be referred to as a terminal, which may be a mobile terminal, a vehicle-mounted terminal, or the like. Among them, UE includes all devices that provide voice and / or data connectivity to users, such as wireless terminal devices, mobile terminal devices, device-to-device communication (D2D) terminal devices, vehicle-to-everything (V2X) terminal devices, machine-to-machine / machine-type communications (M2M / MTC) terminal devices, Internet of Things (IoT) terminal devices, light terminal devices (light UE), reduced capability UE (REDCAP UE), subscriber unit (Subscriber Unit), subscriber station (Subscriber Station), mobile station (Mobile Station), remote station (Remote Station), access point (Access Point, AP), remote terminal (Remote Terminal), access terminal (Access Terminal), user terminal (User Terminal), user agent (User Agent), or user equipment (User Device), etc. It can also be a user equipment in a future communication system, which is not limited by this patent.

[0049] The network device in the embodiment of the present application may be an access network device, a core network device or a server, etc. The access network device may be a base station, such as an evolved base station eNB, a next-generation node gNB in ​​an NR system, a road side unit (RSU), or a centralized unit CU and a distributed unit DU in a cloud access network system, or an access network device in a future communication system. The core network device may be a mobility management entity (MME), a serving gateway (SGW), a packet data node gateway (PGW), a home subscriber server (HSS) that stores user subscription information, a policy control unit (PCRF), etc., and may also be a core network device in a future communication system, which is not limited by the present application.

[0050] The present application provides an indication information and a method for sending and receiving the same. For the multicast service being carried out in the current cell, it can indicate which adjacent cells can provide the multicast service through the PTM transmission mode (on the MTCH), and can also indicate whether the adjacent cells can provide the multicast service through the PTP transmission mode. On this basis, the UE can accurately grasp the configuration information related to the multicast service in the adjacent cell. On the one hand, it can provide a more comprehensive basis for cell reselection, so that the UE can select a suitable adjacent cell. On the other hand, after reselecting the adjacent cell, the UE can perform corresponding correct operations according to the configuration information related to the multicast service of the adjacent cell. On the above basis, the UE can receive the multicast service in the adjacent cell in a timely and correct manner, improve the reliability and continuity of the UE receiving the multicast service in the adjacent cell, and reduce the service transmission delay.

[0051] Figure 1 is a flow chart of a method for sending indication information provided in Example 1 of the present application. This embodiment is applicable to information sending situations. Specifically, the method for sending indication information can be executed by an information sending device, which can be implemented in software and / or hardware and integrated into a network device.

[0052] As shown in FIG1 , the method specifically includes the following steps:

[0053] S110 . Generate indication information, where the indication information is used to indicate whether the neighboring cell supports providing a multicast service in the current cell through a point-to-point PTP transmission mode and / or a point-to-multipoint PTM transmission mode.

[0054] S120: Send the instruction information to the user equipment.

[0055] In this embodiment, indication information is introduced to indicate, for a multicast service being carried out in a current cell, whether a neighboring cell can provide the multicast service through a PTM transmission mode and / or whether the neighboring cell can provide the multicast service through a PTP transmission mode.

[0056] It should be noted that the multicast service in the current cell may be a multicast service in which the network device and the UE are transmitting data through the current cell, a multicast service in which a session is established between the network device and the UE through the current cell, or a multicast service requested by the UE from the network device. The multicast service in the current cell may continue in the reselected cell after the UE performs cell reselection.

[0057] It should be noted that, in some embodiments, the ability to provide multicast services through the PTM transmission mode can also be expressed as supporting the PTM transmission mode, and the ability to provide multicast services through the PTP transmission mode can also be expressed as supporting the PTP transmission mode.

[0058] In one embodiment, the neighboring cells that support at least one of the PTM transmission mode and the PTP transmission mode can be indicated to the UE by the network device by sending an indication message. For example, the identifiers or indexes of these neighboring cells can be indicated in the above-mentioned indication information in the form of one or more lists, such as a neighboring cell list. It can also be indicated to the UE through other signals or signaling or forms, which is not limited in this embodiment.

[0059] Among them, the neighboring cells included in the neighboring cell list can meet the following conditions: for the multicast service provided by the current cell that can be received by the UE in the RRC_INACTIVE state, the neighboring cell can provide at least one multicast service through the PTM transmission mode and / or the PTP transmission mode; the neighboring cells included in the neighboring cell list can also meet the following conditions: for the multicast service provided by the current cell that can be received by the UE in the RRC_CONNECTED state, the neighboring cell can provide at least one multicast service through the PTM transmission mode and / or the PTP transmission mode; the neighboring cells included in the neighboring cell list can also meet the following conditions: for the multicast service provided by the current cell that can be received by the UE in the RRC_CONNECTED or RRC_CONNECTED state, the neighboring cell can provide at least one multicast service through the PTM transmission mode and / or the PTP transmission mode.

[0060] The indication information may also include multicast service neighboring cell information, which is used to indicate, for each multicast service carried out in the current cell, whether one or more neighboring cells can provide the multicast service through the PTM transmission mode and / or the PTP transmission mode. The neighboring cells involved in the multicast service neighboring cell information may be all or part of the neighboring cells in the neighboring cell list.

[0061] As an example, the indication information can be specifically used to indicate, for neighboring cells that support the PTM transmission mode, whether these neighboring cells support the PTP transmission mode, and whether these neighboring cells support the PTP transmission mode for each multicast service; optionally, it can also specifically indicate whether these neighboring cells support the PTM transmission mode for each multicast service.

[0062] As an example, the indication information can be specifically used to indicate the neighboring cells that support the PTP transmission mode, and whether these neighboring cells support the PTP transmission mode for each multicast service; optionally, it can also specifically indicate whether these neighboring cells support the PTM transmission mode, and whether these neighboring cells support the PTM transmission mode for each multicast service.

[0063] As an example, the indication information may be specifically used to indicate, for neighboring cells that support both the PTM transmission mode and the PTP transmission mode, whether each multicast service of these neighboring cells supports the PTM transmission mode and / or whether it supports the PTP transmission mode.

[0064] As an example, the indication information may be specifically used to indicate neighboring cells that support at least one of the PTM and PTP transmission modes, as well as whether these neighboring cells support the PTP transmission mode and / or whether they support the PTM transmission mode for each multicast service. It should be noted that the determination of whether a neighboring cell supports the PTM and / or PTP transmission mode is at the cell level. Neighboring cells that support the PTM and / or PTP transmission modes may be the target of UE cell reselection. However, for a specific multicast service, the transmission modes supported by these neighboring cells for that multicast service may vary. For example, neighboring cell A supports the PTM and / or PTP transmission mode. However, for the multicast service MBS1 being carried out in the current cell, neighboring cell A may support the PTM transmission mode but not the PTP transmission mode. For the multicast service MBS2, neighboring cell A may support both the PTM transmission mode and the PTP transmission mode. For the multicast service MBS3, neighboring cell A may not support either transmission mode.

[0065] After receiving the above indication information, the UE can correctly understand and operate according to the indication information. For example, if the neighboring cell supports the PTP transmission mode, the UE can receive multicast services from the neighboring cell via the PTP transmission mode in the RRC connected state (the neighboring cell is within the service transmission area); if the neighboring cell supports the PTM transmission mode, the UE can receive multicast services from the neighboring cell in both the RRC connected state and the RRC inactive state; if both PTM and PTP transmission modes are supported, the UE can use the PTM mode first.

[0066] For another example, if the adjacent cell corresponding to the multicast service does not support the PTM transmission mode but supports the PTP transmission mode, after the UE enters the adjacent cell, it can directly send a request to obtain the multicast service data to the network device when receiving the multicast service, and the network device will directly send the multicast service data to the user; if the adjacent cell corresponding to the multicast service does not support the PTM transmission mode or the PTP transmission mode, before the UE moves to the adjacent cell (or before establishing an RRC connection with the adjacent cell), it may be necessary to request unicast reception of the multicast service (i.e., PTP transmission mode) in order to receive the service through the PTP transmission mode in the adjacent cell.

[0067] Furthermore, when performing cell reselection, the UE can also make the right decision by comprehensively considering the priority of the multicast service, network resources, and the transmission modes supported by neighboring cells. For example, for higher-priority multicast services, it can prioritize accessing neighboring cells that support both PTM and PTP transmission modes, providing dual guarantees for the multicast service and thus improving its reliability. It should be noted that support for PTM and / or PTP transmission modes can be considered as one of the factors in cell reselection, but other factors may also be considered in actual applications.

[0068] For example, in the current communication system, user UE1 is currently in serving cell O, and adjacent cells are A and B. UE1 is in RRC_INACTIVE and can receive MBS1, while

[0069] For the multicast service MBS1: Neighboring cell A does not support either the PTM or PTP transmission mode; neighboring cell B does not support the PTM transmission mode but supports the PTP transmission mode;

[0070] If the prior art only indicates whether the neighboring cell can provide the multicast service through the PTM transmission mode, but does not indicate whether the neighboring cell can provide the multicast service through the PTP transmission mode, the UE may have incorrect understanding and operation, and the multicast service cannot be effectively transmitted. For example, if the UE reselects to adjacent cell A, once the multicast service MBS1 fails to be received in the adjacent cell A using the PTM transmission mode, it cannot attempt to receive it using the PTP transmission mode, which may eventually cause the multicast service MBS1 transmission to fail; if the UE reselects to the adjacent cell B, the UE may mistakenly understand that the adjacent cell B does not support the PTP transmission mode. When the multicast service MBS1 fails to be received in the adjacent cell A using the PTM transmission mode, the UE may not try the PTP transmission mode, which may also cause the multicast service MBS1 to be unable to be effectively transmitted; in addition, no matter which adjacent cell the UE reselects to, when the UE attempts to receive the multicast service MBS1 using the PTP transmission mode, since it does not know whether the adjacent cell supports the PTP transmission mode, the UE cannot clearly determine whether it should prepare to restore to the RRC connection state and receive the multicast service in the adjacent cell using the PTP transmission mode, or whether it should request unicast reception of the multicast service from the network device.

[0071] According to the indication information of this embodiment, the network device may indicate to the UE whether each neighboring cell supports the PTM transmission mode and / or the PTP transmission mode for the multicast service being performed in the current cell. For example, for the multicast service MBS1 being carried out in the current cell, indication information can be used to indicate whether the neighboring cells (neighboring cell A and neighboring cell B) that support the PTM transmission mode support the PTP transmission mode. Specifically, neighboring cell A does not support the PTP transmission mode, and neighboring cell B supports the PTP transmission mode. If the UE selects the neighboring cell B during the cell reselection process, then in the neighboring cell B, when the UE cannot receive the multicast service MBS1 through the PTM transmission mode, it can still receive the multicast service MBS1 through the PTP transmission method. Therefore, when the UE reselects to the neighboring cell B, the UE can restore to the RRC connection state and receive the multicast service through the PTP transmission mode in the neighboring cell B; if the UE selects the neighboring cell A during the cell reselection process, then in the neighboring cell A, the UE cannot receive the multicast service MBS1 through the PTM transmission mode or the PTP transmission mode. Therefore, before moving to the neighboring cell A, the UE requests unicast reception of the multicast service MBS1 and receives the multicast service MBS1 through the PTP mode in A.

[0072] For another example, in the current communication system, user UE1 is currently in serving cell O, and adjacent cells are C and D. UE1 can receive MBS1 in RRC_INACTIVE mode, while

[0073] For the multicast service MBS1: neighboring cell C supports PTM transmission but not PTP transmission; neighboring cell B supports both PTM and PTP transmission.

[0074] If, according to existing technologies, only the ability of neighboring cells to provide the multicast service via PTM transmission is indicated, without indicating whether the neighboring cells can provide the multicast service via PTP transmission, the UE may make incorrect decisions during cell reselection. For example, for the multicast service MBS1, if only the ability of neighboring cells C and D to support PTM transmission is indicated, the UE may not make the correct decision during cell reselection.

[0075] According to the indication information of this embodiment, the network device can indicate to the UE whether each neighboring cell supports the PTM transmission mode and / or the PTP transmission mode for the multicast service being performed in the current cell. For example, for the multicast service MBS1 being performed in the current cell, the indication information can be used to indicate whether the neighboring cells (neighboring cell A and neighboring cell C) that support the PTM transmission mode support the PTP transmission mode. Specifically, if neighboring cell C does not support the PTP transmission mode, but neighboring cell D does support the PTP transmission mode, then when the UE reselects the cell, it can consider the fact that neighboring cell D can receive MBS1 in both the PTP and PTM transmission modes, and at the same time, consider factors such as transmission delay and signal quality, such as the fact that the signal quality of neighboring cell D is much better than that of neighboring cell C. Then, when reselecting the cell, the UE reselects to neighboring cell D, receives MBS1 in the PTM transmission mode, obtains multicast service configuration information, and then receives MBS1, thereby improving the accuracy of the cell reselection decision and enhancing the continuity of the multicast service.

[0076] In summary, the indication information and its sending and receiving method of this embodiment can indicate whether the adjacent cell can provide the multicast service through the PTM transmission mode, and / or whether the adjacent cell can provide the multicast service through the PTP transmission mode for the multicast service being carried out in the current cell. On this basis, the UE can accurately grasp the configuration information related to the multicast service in the adjacent cell. On the one hand, it can provide a more comprehensive basis for cell reselection, so that the UE can select a suitable adjacent cell. On the other hand, after reselecting the adjacent cell, the UE can perform corresponding correct operations according to the configuration information related to the multicast service of the adjacent cell. On the above basis, the UE can receive the multicast service in the adjacent cell in a timely and correct manner, improve the reliability and continuity of the UE receiving the multicast service in the adjacent cell, and reduce the service transmission delay.

[0077] In one embodiment, the multicast service includes a multicast service carried out in the current cell that can be received by a UE in an RRC inactive state.

[0078] Among them, for the multicast service that can be received by the UE in the RRC non-activated state, if the adjacent cell can provide the multicast service through at least one of the PTM transmission mode and the PTP transmission mode, then after entering the corresponding adjacent cell, the UE can continue to receive the multicast service using the PTM transmission mode in the RRC non-activated state, or it can also enter the RRC connected state and use the PTP transmission mode or the PTM transmission mode to receive the multicast service.

[0079] In one embodiment, the indication information includes a neighboring cell list, where the neighboring cell list is used to indicate neighboring cells that support providing a multicast service in the current cell through a PTP transmission mode and / or a PTM transmission mode.

[0080] In this embodiment, a neighboring cell list is introduced. The neighboring cells included in the neighboring cell list meet the following conditions: for the multicast service provided by the current cell that can be received by the UE in the RRC_INACTIVE state, the neighboring cell can provide at least one service through the PTM transmission mode and / or the PTP transmission mode.

[0081] In one embodiment, the indication information is included in the MBS multicast configuration information; the MBS multicast configuration information is carried by an RRC release (RRCRelease) message and / or an MBS multicast control channel message.

[0082] The network device sends indication information to the UE through an RRC release message (RRCRelease with SuspendConfig) containing a suspend configuration. The RRC release message carries MBS multicast configuration information (MBS Multicast Configuration). The MBS multicast configuration information contains the above indication information, which is used to provide a list of neighboring cells that can be received by the UE in the RRC_INACTIVE state in the current cell using the PTP transmission mode and / or the PTM transmission mode. Accordingly, the UE receives the RRCRelease message and obtains the SuspendConfig message carried in the RRCRelease message, which can instruct the UE to switch from the RRC_CONNECTED state to the RRC_INACTIVE state, and receives the MBS multicast configuration information (MBS Multicast Configuration) carried by the RRC release message and obtains the indication information contained in the MBS multicast configuration information, thereby obtaining a list of neighboring cells that support transmission in the PTP transmission mode and / or the PTM transmission mode and can be received by the UE in the RRC_INACTIVE state in the current cell.

[0083] As an example, the network device sends indication information to the UE through an MBS multicast control channel. The MBS multicast control channel carries MBS multicast configuration information (MBS Multicast Configuration). The MBS multicast configuration information includes the above-mentioned indication information, which is used to provide a list of neighboring cells that can be received by the UE in the RRC_INACTIVE state in the current cell and transmit one or more MBS multicast services in a PTP transmission mode and / or a PTM transmission mode. Accordingly, the UE receives the MBS multicast configuration information carried in the MBS multicast control channel by receiving the MBS multicast control channel, obtains the indication information included in the MBS multicast configuration information, and further obtains a list of neighboring cells that support transmission in the PTP transmission mode and / or the PTM transmission mode and can be received by the UE in the RRC_INACTIVE state in the current cell.

[0084] The MBS multicast configuration information (MBS Multicast Configuration) is sent via the multicast radio bearer (MRB) of the RRC_INACTIVE UE.

[0085] Accordingly, when the neighbor cell list is included in the MBS multicast configuration information (MBS Multicast Configuration), the data structure of the MBS multicast configuration information is as follows:

[0086] Among them, MBSMulticastConfiguration-r18 is used to indicate MBS multicast configuration information, MBS-SessionInfoListMulticast-r18 is used to indicate multicast service configuration information, mbs-NeighbourCellList-r18 is used to indicate the list of neighboring cells that support the transmission of multicast services received by UE in RRC_INACTIVE state in the current serving cell in PTM transmission mode, and mbs-NeighbourCellListl-r18 is used to indicate the list of neighboring cells that support the transmission of multicast services received by UE in RRC_INACTIVE state in the current serving cell in PTP transmission mode.

[0087] It should be noted that the neighbor cell list can be a new list (mbs-NeighbourCellList1-r18) added to the original neighbor cell list (mbs-NeighbourCellList-r18) in the MBS multicast configuration information to indicate neighbor cells that support the PTP transmission mode for multicast services received by UEs in the RRC_INACTIVE state in the current serving cell. In this case, the original list and the new list are used together as the neighbor cell list, respectively used to indicate neighbor cells that support the PTM / PTP transmission mode for multicast services received by UEs in the RRC_INACTIVE state in the current serving cell.

[0088] In addition, when the neighbor cell list is included in the MBS multicast configuration information (MBS Multicast Configuration), the data structure of the MBS multicast configuration information may also be as follows:

[0089] Among them, MBSMulticastConfiguration-r18 is used to indicate MBS multicast configuration information, MBS-SessionInfoListMulticast-r18 is used to indicate multicast service configuration information, and mbs-NeighbourCellList2-r18 is used to indicate a list of neighboring cells that support the transmission of multicast services received by UEs in the RRC_INACTIVE state in the current serving cell in PTP and / or PTM mode.

[0090] It should be noted that the definition of the original neighboring cell list can be modified to indicate whether the neighboring cell supports the PTP transmission mode and / or the PTM transmission mode. In this case, the modified neighboring cell list can be a list of neighboring cells that support the provision of multicast services in the current cell via the PTP transmission mode and / or the PTM transmission mode, or a list of neighboring cells that support the provision of multicast services in the current cell via the PTP transmission mode and the PTM transmission mode, or a list of neighboring cells that support the provision of multicast services in the current cell via the PTP transmission mode; or a list of neighboring cells that support the provision of multicast services in the current cell via the PTM transmission mode.

[0091] In one embodiment, the neighbor cell list includes one of the following:

[0092] Supports providing a list of neighboring cells for multicast services in the current cell via PTP transmission mode and / or PTM transmission mode;

[0093] Supports providing a list of neighboring cells for multicast services in the current cell through PTP and PTM transmission modes;

[0094] Supports providing a list of neighboring cells for multicast services in the current cell via PTP transmission;

[0095] Supports providing a list of neighboring cells for multicast services in the current cell through PTM transmission;

[0096] Supports providing a list of neighboring cells for multicast services in the current cell through PTP transmission and supports providing a list of neighboring cells for multicast services in the current cell through PTM transmission.

[0097] The neighboring cell list is used to indicate neighboring cells that support one or two of the above transmission modes. The neighboring cell list can be included in the indication information or indicated through other information or signaling.

[0098] As an example, in the current communication system, there are multiple UEs in the current cell O, and some of the UEs can receive multiple multicast services MBS1, MBS2, MBS3, ... MBS in RRC_INACTIVE mode. M , where M is a positive integer. There are 10 neighboring cells that support PTM transmission mode to provide multicast services that can be received by UEs in RRC_INACTIVE mode in the current cell, namely Cell1, Cell2, Cell3, ... Cell 10 , there are 8 adjacent cells that support PTP transmission mode, namely Cell8, Cell9, Cell 10 , ...Cell 15 , and there are 3 adjacent cells that support both PTM and PTP transmission modes, namely Cell8, Cell9 and Cell 10 , then the neighboring cell list can be any of the following lists:

[0099] If the neighboring cell list is a list of neighboring cells that support PTP transmission mode and / or PTM transmission mode, then the neighboring cell list indicates a total of 15 neighboring cells, namely Cell1, Cell2, Cell3, ... Cell 15 ;

[0100] If the adjacent cell list is a list of adjacent cells that support PTP transmission mode and PTM transmission mode, the adjacent cell list indicates a total of 3 adjacent cells, namely Cell8, Cell9 and Cell 10 ,In this case, for higher-level multicast services, the UE can give priority to the neighboring cells in the list during cell reselection;

[0101] If the neighboring cell list is a list of neighboring cells supporting the PTP transmission mode, the neighboring cell list indicates a total of 8 neighboring cells, namely Cell1, Cell2, Cell3, ... Cell 10 ;

[0102] If the adjacent cell list is a list of adjacent cells supporting PTM transmission mode, the adjacent cell list indicates a total of 10 adjacent cells, namely Cell8, Cell9, Cell 10 , ...Cell 15 ;

[0103] If the neighboring cell list is a list of neighboring cells supporting PTP transmission mode and a list of neighboring cells supporting PTM transmission mode, in this case the neighboring cell list includes two lists. The first list indicates 8 neighboring cells, namely Cell8, Cell9, Cell10, Cell11, Cell12, Cell13, Cell14, Cell15, Cell16, Cell17, Cell18, Cell19, Cell20, Cell21, Cell22, Cell23, Cell24, Cell25, Cell26, Cell27, Cell28, Cell29, Cell30, Cell31, Cell32, Cell33, Cell34, Cell35, Cell36, Cell37, Cell38, Cell39, Cell40, Cell41, Cell42, Cell43, Cell44, Cell45, Cell46, Cell47, Cell48, Cell49, Cell50, Cell51, Cell52, Cell53, Cell54, Cell55, Cell56, Cell57, Cell58, Cell59, Cell60, Cell61, Cell7 10 , ...Cell 15 , the second list indicates 10 adjacent cells, namely Cell1, Cell2, Cell3, ... Cell 10 .

[0104] In one embodiment, the indication information includes multicast service neighboring cell information, which is used to indicate whether, for each multicast service performed in the current cell, the neighboring cells in the neighboring cell list support providing multicast services through PTP transmission mode and / or PTM transmission mode.

[0105] In this embodiment, the multicast service neighbor cell information may be used to indicate, for a specific multicast service, whether the neighboring cells in the neighbor cell list support providing the multicast service using the PTP transmission mode and / or the PTM transmission mode. The neighbor cell list may be in any of the aforementioned formats. The network device may use the multicast service neighbor cell information to indicate to the UE the transmission mode supported by each neighboring cell in the neighbor cell list for a specific multicast service.

[0106] It is important to note that whether a neighboring cell supports the PTP transmission mode for a multicast service that can be received by a UE in the RRC_INACTIVE state in the current cell, and whether the multicast service that can be received by a UE in the RRC_INACTIVE state supports the PTP transmission mode within the neighboring cell are two different concepts. In other words, the neighboring cell's support for the PTP transmission mode means that the cell supports the PTP transmission mode for a certain multicast service, which is not equivalent to supporting the PTP transmission mode for every multicast service in the cell. For example, the current cell carries out two multicast services MBS1 and MBS2, and there are two adjacent cells Cell1 and Cell2. Both of these adjacent cells Cell1 and Cell2 support the transmission of multicast services in PTP and / or PTM transmission mode, that is, the adjacent cell list involves two adjacent cells Cell1 and Cell2, but for the multicast service MBS1, the adjacent cell Cell1 may not support the PTP transmission mode, and the adjacent cell Cell2 may support the PTP transmission mode. For the multicast service MBS2, the adjacent cell Cell1 may support the PTP transmission mode, and the adjacent cell Cell2 may not support the PTP transmission mode but does not support the PTM transmission mode.

[0107] In one embodiment, the multicast service neighboring cell information is included in the multicast service configuration information of the corresponding multicast service; the multicast service configuration information is included in the MBS multicast configuration information; and the MBS multicast configuration information is carried by the RRC release message and / or the MBS multicast control channel message.

[0108] Among them, the network device can send indication information to the UE through an RRC release message and / or an MBS multicast control channel message. The RRC release message and / or the MBS multicast control channel message carries MBS multicast configuration information. The MBS multicast configuration information (MBS Multicast Configuration) includes multicast service configuration information (MBS SessionInfoList Multicast), and the multicast service configuration information includes the above-mentioned multicast service adjacent cell information. It should be noted that for each multicast service, corresponding multicast service adjacent cell information can be configured to indicate to the UE whether the adjacent cell provides transmission in PTP transmission mode and / or PTM transmission mode for the multicast service. The UE receives the RRCRelease message and / or MBS Multicast MCCH and obtains the indication information therefrom, thereby improving the reliability of receiving multicast services or performing cell reselection.

[0109] Among them, the network device sends indication information to the UE through an RRC release message (RRCRelease with SuspendConfig) containing a suspend configuration, and the RRC release message carries MBS multicast configuration information (MBS Multicast Configuration), and the MBS multicast configuration information includes multicast service configuration information. The multicast service configuration information includes multicast service adjacent cell information corresponding to one or more multicast services, which is used to indicate to the UE whether, for the MBS multicast service in the current cell that can be received by the UE in the RRC_INACTIVE state, the adjacent cell provides transmission of the multicast service in PTP transmission mode and / or PTM transmission mode. Accordingly, the UE receives the RRCRelease message and obtains the SuspendConfig message carried in the RRCRelease message, which can instruct the UE to switch from the RRC_CONNECTED state to the RRC_INACTIVE state, and obtains the multicast service configuration information contained in the MBS multicast configuration information by receiving the MBS multicast configuration information carried by the RRC release message, and then obtains the multicast service adjacent cell information corresponding to the multicast service in the multicast service configuration information, and then clearly supports whether each adjacent cell provides transmission of the multicast service in PTP transmission mode and / or PTM transmission mode for the MBS multicast service.

[0110] As an example, a network device sends indication information to a UE through an MBS multicast control channel. The MBS multicast control channel carries multicast service configuration information (MBS Multicast Configuration). The MBS multicast configuration information includes multicast service configuration information. The multicast service configuration information includes multicast service neighboring cell information corresponding to one or more multicast services, respectively, for indicating to the UE whether, for an MBS multicast service that can be received by a UE in an RRC_INACTIVE state in the current cell, the neighboring cell provides for transmitting the multicast service in a PTP transmission mode and / or a PTM transmission mode. Accordingly, the UE receives the MBS multicast control channel, receives the MBS multicast configuration information carried in the MBS multicast control channel, obtains the multicast service configuration information included in the MBS multicast configuration information, and further obtains the multicast service neighboring cell information corresponding to the multicast service in the multicast service configuration information, so as to clearly support, for the MBS multicast service, whether each neighboring cell provides for transmitting the multicast service in a PTP transmission mode and / or a PTM transmission mode. Specifically, the UE can monitor the PDCCH scrambled by a specific scrambling code, such as the MBS multicast control channel radio network temporary identifier (MCCH-RNTI) or the single cell radio network temporary identifier (SC-RNTI) or other scrambling codes of the MBS RNTI, receive the MBS multicast control channel according to the scheduling information in the PDCCH, and obtain the MBS multicast configuration information carried by the MBS multicast control channel.

[0111] MBS-SessionInfoList Multicast provides the RRC_INACTIVE UE with a list of MBS multicast sessions sent via the multicast MRB, and for each MBS multicast session, provides the associated G-RNTI and scheduling information.

[0112] Correspondingly, when the multicast service neighboring cell information is included in the multicast service configuration information (MBS-SessionInfoListMulticast), the data structure of the multicast service configuration information is as follows:

[0113] Among them, mtch-NeighbourCell-r18 can be used to indicate whether the neighboring cell supports the PTM transmission mode for multicast services, and dch-NeighbourCell-r18 can be used to indicate whether the neighboring cell supports the PTP transmission mode for multicast services.

[0114] It should be noted that the multicast service neighboring cell information can be based on the original information (mtch-NeighbourCell-r18) used to indicate whether the multicast service neighboring cell supports the PTM transmission mode, and the newly added information (dch-NeighbourCell-r18) is used to indicate whether the multicast service neighboring cell supports the PTP transmission mode. In this case, the original information and the newly added information can together constitute the multicast service neighboring cell information, and are respectively used to indicate whether the multicast service neighboring cell supports the PTM / PTP transmission mode. In addition, the neighboring cell list can be a list of neighboring cells that support the provision of multicast services in the current cell through the PTP transmission mode; it can also be a list of neighboring cells that support the provision of multicast services in the current cell through the PTM transmission mode; it can also be a list of neighboring cells that support the provision of multicast services in the current cell through the PTP transmission mode and a list of neighboring cells that support the provision of multicast services in the current cell through the PTM transmission mode.

[0115] It should be noted that, in the above data structure, except for the part used to indicate whether the neighboring cell supports the PTP transmission mode for the multicast service, the part can be changed and replaced according to the actual application scenario and requirements, and this embodiment does not limit this.

[0116] In one embodiment, when the multicast service neighboring cell information is included in the multicast service configuration information (MBS-SessionInfoListMulticast), the data structure of the multicast service configuration information may also be as follows:

[0117] Among them, mtch-dch-NeighbourCell1-r18 can be used to indicate whether the neighboring cell supports the PTP transmission mode for multicast services. It should be noted that the original information used to indicate whether the neighboring cell supports the PTM transmission mode for multicast services can be modified to indicate whether the neighboring cell supports the PTM and / or PTP transmission modes for multicast services. In this case, the neighboring cell list can be a list of neighboring cells that support the provision of multicast services in the current cell through the PTP transmission mode and / or the PTM transmission mode; it can also be a list of neighboring cells that support the provision of multicast services in the current cell through the PTP transmission mode and the PTM transmission mode.

[0118] In one embodiment, when the multicast service neighboring cell information is included in the multicast service configuration information (MBS-SessionInfoListMulticast), the data structure of the multicast service configuration information may also be as follows:

[0119] Among them, mtch-dch-NeighbourCell2-r18 can be used to indicate, through a character string, whether the neighboring cell supports the PTP transmission mode for multicast services, where N is greater than or equal to 2. It should be noted that the original information used to indicate whether the neighboring cell supports the PTM transmission mode for multicast services can be modified to indicate whether the neighboring cell supports the PTM and / or PTP transmission modes for multicast services. In this case, the neighboring cell list can be a list of neighboring cells that support the provision of multicast services in the current cell through the PTP transmission mode and / or the PTM transmission mode; it can also be a list of neighboring cells that support the provision of multicast services in the current cell through the PTP transmission mode and the PTM transmission mode.

[0120] It should be noted that the data structures in the above embodiments are only examples, and this embodiment does not limit the information, parameters, names, etc. therein.

[0121] In one embodiment, the number of bits of the multicast service neighboring cell information is equal to the number of neighboring cells in the neighboring cell list, and they correspond one to one. Each bit can be used to indicate whether the corresponding neighboring cell supports the PTP transmission mode for a multicast service in the current cell. For example, if the value of a bit is 1, the corresponding neighboring cell supports the PTP transmission mode, and if the value of a bit is 0, the corresponding neighboring cell does not support the PTP transmission mode. In some embodiments, each bit can also be used to indicate whether the corresponding neighboring cell supports at least one of the PTP transmission mode and the PTM transmission mode. For example, if the value of a bit is 1, the corresponding neighboring cell supports at least one of the PTP transmission mode and the PTM transmission mode, and if the value of a bit is 0, the corresponding neighboring cell does not support the PTP transmission mode or the PTM transmission mode.

[0122] For a specific multicast service, the neighboring cells in the neighboring cell list correspond to the bits of the multicast service neighboring cell information in sequence, and each bit is used to indicate whether the corresponding neighboring cell supports the PTP transmission mode, so that the UE can correctly receive the multicast service or perform cell reselection. For example, the neighboring cell list involves three neighboring cells Cell1, Cell2, and Cell3, and the number of neighboring cells is 3. For the multicast service MBS1, the number of bits of the multicast service neighboring cell information is also 3. The neighboring cell list is arranged in sequence as Cell1, Cell2, and Cell3. The first bit B1 in the corresponding multicast service neighboring cell information is used to indicate whether Cell1 supports the PTP transmission mode, the second bit B2 is used to indicate whether Cell2 supports the PTP transmission mode, and the third bit B3 is used to indicate whether Cell3 supports the PTP transmission mode. The multicast service neighboring cell information includes B1B2B3.

[0123] Among them, for the multicast service MBS1, if Cell1 supports the PTP transmission mode, B1 can be set to 1, otherwise it is set to 0. If Cell2 supports the PTP transmission mode, B2 can be set to 1, otherwise it is set to 0, and so on. If the multicast service MBS1 does not support the PTP transmission mode in any adjacent cell, all bits in the multicast service adjacent cell information corresponding to the multicast service MBS1 are set to 0. Referring to the above example, in the current communication system, there are multiple UEs in the current cell O, and some of the UEs can receive multiple multicast services MBS1, MBS2, MBS3, ...MBS under RRC_INACTIVE. M , where M is a positive integer. There are 10 neighboring cells that support PTM transmission mode to provide multicast services that can be received by UEs in RRC_INACTIVE mode in the current cell, namely Cell1, Cell2, Cell3, ... Cell 10 , there are 8 adjacent cells that support PTP transmission mode, namely Cell8, Cell9, Cell 10 , ...Cell 15 , and there are 3 adjacent cells that support both PTM and PTP transmission modes, namely Cell8, Cell9 and Cell 10 , then the multicast service MBS that can be received by the UE in RRC_INACTIVE in the current cell O m (1≤m≤M), the corresponding multicast neighbor cell information can be in any of the following forms:

[0124] If the neighbor cell information list involves 15 neighbor cells, the multicast service neighbor cell information may include 15 bits, each bit being used to indicate whether a corresponding neighbor cell in the neighbor cell list supports transmission of the multicast service in the PTP transmission mode;

[0125] If the neighboring cell information list involves three neighboring cells, the multicast service neighboring cell information may include three bits, each bit being used to indicate whether a corresponding neighboring cell in the neighboring cell list that supports two transmission modes supports transmission of the multicast service in the PTP transmission mode;

[0126] If the neighboring cell information list involves 8 neighboring cells, the multicast service neighboring cell information may include 8 bits, each bit being used to indicate whether a corresponding neighboring cell supporting the PTP transmission mode in the neighboring cell list supports transmission of the multicast service in the PTP transmission mode;

[0127] If the neighbor cell information list involves 10 neighbor cells, the multicast service neighbor cell information may include 10 bits, each bit being used to indicate whether a corresponding neighbor cell supporting the PTM transmission mode in the neighbor cell list supports transmission of the multicast service in the PTP transmission mode;

[0128] If the neighboring cell information list involves two lists, with 8 neighboring cells and 10 neighboring cells respectively, the multicast service neighboring cell information may include 8 bits and 10 bits respectively, each of the 8 bits is used to indicate whether a corresponding neighboring cell supporting the PTP transmission mode in the neighboring cell list supports the transmission of this multicast service in the PTP transmission mode, and each of the 10 bits is used to indicate whether a corresponding neighboring cell supporting the PTM transmission mode in the neighboring cell list supports the transmission of this multicast service in the PTP transmission mode.

[0129] In one embodiment, a single bit of the multicast service neighboring cell information takes a first value, indicating that the neighboring cell corresponding to the bit supports providing multicast services through the PTP transmission mode; a single bit of the multicast service neighboring cell information takes a second value, indicating that the neighboring cell corresponding to the bit does not support providing multicast services through the PTP transmission mode.

[0130] Considering that each multicast service has corresponding multicast service adjacent cell information, in order to specifically clarify the transmission mode supported / unsupported by each multicast service in different adjacent cells, each bit in the multicast service adjacent cell information corresponding to each multicast service is assigned a corresponding value to indicate the corresponding transmission mode. For example, the adjacent cell list involves two adjacent cells Cell1 and Cell2. For the multicast service MBS1, the adjacent cell Cell1 does not support the PTP transmission mode, and the adjacent cell Cell2 supports the PTP transmission mode. For the multicast service MBS2, the adjacent cell Cell1 supports the PTP transmission mode, and the adjacent cell Cell2 does not support the PTP transmission mode but does not support the PTM transmission mode. If the adjacent cell list is arranged in order as Cell1 and Cell2: then the first bit B in the multicast service adjacent cell information of the multicast service MBS1 11 The second value is used to indicate that Cell1 does not support the PTP transmission mode to transmit MBS1. The second bit B 12 The first value is used to indicate that Cell2 supports the PTP transmission mode to transmit MBS1. Then, the multicast service neighboring cell information of the two neighboring cells for the multicast service MBS1 includes the following bits: B 11 B 12 ; The first bit B in the multicast service neighboring cell information of the multicast service MBS2 21 The value is the first value, which is used to indicate that Cell1 supports PTP transmission mode to transmit MBS2. The second bit B 22 The second value is used to indicate that Cell2 does not support the PTP transmission mode to transmit MBS2. The multicast service neighboring cell information of the two neighboring cells for the multicast service MBS2 includes the following bits: B 21 B 22 . The first value may be 1 and the second value may be 0; or the first value may be 0 and the second value may be 1.

[0131] As an example, for the multicast service MBS1, if Cell1 supports PTP transmission mode, then B 11 Set to 1, otherwise set it to 0; if Cell2 supports PTP transmission mode, then set B 12 Set to 1, otherwise set it to 0; if the multicast service MBS1 does not support the PTP transmission mode in any adjacent cell, all bits in the multicast service adjacent cell information corresponding to the multicast service MBS1 are set to 0.

[0132] For the multicast service MBS2, if Cell1 supports PTP transmission mode, then B 21 Set to 1, otherwise set it to 0; if Cell2 supports PTP transmission mode, then set B22 Set to 1, otherwise set it to 0; if the multicast service MBS2 does not support the PTP transmission mode in any adjacent cell, all bits in the multicast service adjacent cell information corresponding to the multicast service MBS2 are set to 0.

[0133] Referring to the above example, in the current communication system, there are multiple UEs in the current cell O, and some of the UEs can receive multiple multicast services MBS1, MBS2, MBS3, ... MBS in RRC_INACTIVE mode. M Among them, there are 10 neighboring cells that support PTM transmission mode to provide multicast services that can be received by UE in RRC_INACTIVE state in the current cell, namely Cell1, Cell2, Cell3, ... Cell 10 , there are 8 adjacent cells that support PTP transmission mode, namely Cell8, Cell9, Cell 10 , ...Cell 15 , and there are 3 adjacent cells that support both PTM and PTP transmission modes, namely Cell8, Cell9 and Cell 10 , then the multicast service MBS that can be received by the UE in RRC_INACTIVE in the current cell O n , the value of a single bit in the corresponding multicast neighbor cell information can be any of the following:

[0134] If the neighboring cell information list involves 15 neighboring cells that support PTP transmission mode and / or PTM transmission mode, the multicast service neighboring cell information may include 15 bits, wherein the neighboring cells corresponding to the bits having the first value (such as 1) support the provision of multicast services through the PTP transmission mode, and the neighboring cells corresponding to the bits having the second value (such as 0) do not support the provision of multicast services through the PTP transmission mode. It can be understood that for the current multicast service, at most 8 bits in the corresponding multicast service neighboring cell information have the first value, and the remaining (at least 7) ​​bits have the second value.

[0135] Specifically, there are 8 adjacent cells in the communication system that support the transmission of one or more multicast services through the PTP transmission mode, and 10 adjacent cells that support the transmission of one or more multicast services through the PTM transmission mode. For a multicast service carried out in the current cell: if the above 8 adjacent cells that support the PTP transmission mode all support the transmission of the multicast service using PTP, then among the 15 bits corresponding to the multicast service, 8 bits are the first value and 7 bits are the second value; if 6 of the above 8 adjacent cells that support the PTP transmission mode support the transmission of multicast services using PTP, then among the 15 bits corresponding to the multicast service, 6 bits are the first value and 9 bits are the second value.

[0136] Referring to the above example, if the neighboring cell information list involves 3 neighboring cells that support both PTM transmission mode and PTP transmission mode, the multicast service neighboring cell information may include 3 bits, wherein the bit with a first value (such as 1) corresponds to the neighboring cell that supports the provision of multicast services through the PTP transmission mode, and the bit with a second value (such as 0) corresponds to the neighboring cell that does not support the provision of multicast services through the PTP transmission mode. It can be understood that for the current multicast service, in the corresponding multicast service neighboring cell information, each of the 3 bits may be the first value or the second value.

[0137] Specifically, there are three adjacent cells in the system that support both the transmission of one or more multicast services through the PTP transmission mode and the transmission of one or more multicast services through the PTM transmission mode. For a multicast service carried out in the current cell, if several of the three adjacent cells support the transmission of the multicast service through the PTP transmission mode, then several of the three bits corresponding to the multicast service will have the first value, and the remaining bits will have the second value. If all three adjacent cells support the transmission of the multicast service through the PTP transmission mode, then all three bits will have the first value. If none of the three adjacent cells support the transmission of the multicast service through the PTP transmission mode, then all three bits will have the second value.

[0138] Referring to the above example, if the neighboring cell information list involves 8 neighboring cells that support the PTP transmission mode, the multicast service neighboring cell information may include 8 bits; among them, the neighboring cell corresponding to the bit with the first value (such as 1) supports the provision of multicast services through the PTP transmission mode, and the neighboring cell corresponding to the bit with the second value (such as 0) does not support the provision of multicast services through the PTP transmission mode. It can be understood that for the current multicast service, each of the 8 bits of the corresponding multicast service neighboring cell information may be the first value or the second value.

[0139] Specifically, there are 8 adjacent cells in the communication system that support transmission of one or more multicast services through PTP transmission. For a multicast service carried out in the current cell: how many of the above 8 adjacent cells support transmission of the multicast service through PTP transmission, then several bits of the 8 bits corresponding to the multicast service have the first value, and the remaining bits have the second value; if all 8 adjacent cells support transmission of the multicast service through PTP transmission, then all 8 bits have the first value; if none of the 8 adjacent cells support transmission of the multicast service through PTP transmission, then all 8 bits have the second value.

[0140] Referring to the above example, if the neighboring cell information list involves 10 neighboring cells that support the PTM transmission mode, the multicast service neighboring cell information may include 10 bits; among them, the neighboring cells corresponding to the bits with the first value (such as 1) support the provision of multicast services through the PTP transmission mode, and the neighboring cells corresponding to the bits with the second value (such as 0) do not support the provision of multicast services through the PTP transmission mode. It can be understood that for the current multicast service, at most 3 bits of the 10 bits of the corresponding multicast service neighboring cell information are the first value, and at least 7 bits are the second value.

[0141] Specifically, there are 10 adjacent cells in the communication system that support transmission of one or more multicast services through the PTM transmission mode. For a multicast service carried out in the current cell: among the above 10 adjacent cells, 3 adjacent cells also support the PTP transmission mode. Therefore, among these 3 adjacent cells, several adjacent cells support transmission of the multicast service through the PTP transmission mode. Then, among the 3 bits corresponding to these 3 adjacent cells, several bits have the first value, and among the 10 bits corresponding to the 10 adjacent cells, all bits except these 3 bits have the second value.

[0142] Referring to the above example, if the neighboring cell information list involves two lists, with 8 cells and 10 cells respectively, the multicast service neighboring cell information may include 8 bits and 10 bits respectively; among which, the neighboring cells corresponding to the bits with the first value (such as 1) support the provision of multicast services through the PTP transmission mode, and the neighboring cells corresponding to the bits with the second value (such as 0) do not support the provision of multicast services through the PTP transmission mode. It can be understood that for the current multicast service, the corresponding multicast service neighboring cell information has 3 bits in each of the two lists corresponding to 3 neighboring cells that support both the PTM transmission mode and the PTP transmission mode. These 3 bits are used to indicate whether these 3 neighboring cells support the PTP transmission mode, so the values ​​of these 3 bits in the two lists should be consistent; in addition, in the first list, at most 3 bits are the first value, and each bit in the second list may be the first value or the second value.

[0143] Specifically, in a communication system, there are 8 neighboring cells that support transmission of one or more multicast services through the PTP transmission mode, and 10 neighboring cells that support transmission of one or more multicast services through the PTM transmission mode. Among them, 3 neighboring cells support both the PTM transmission mode and the PTP transmission mode. Then, for a multicast service carried out in the current cell, each bit in the 8 bits corresponding to the first list may be the first value or the second value. Among the 10 neighboring cells supporting the PTM transmission mode involved in the second list, 3 neighboring cells also support the PTP transmission mode. Therefore, among these 3 neighboring cells, several neighboring cells support transmission of the multicast service through the PTP transmission mode, and then several bits in the 3 bits corresponding to these 3 neighboring cells are the first value. Among the 10 neighboring cells involved in the second list, the remaining 7 cells other than these 3 neighboring cells are cells that only support transmission of the PTM transmission multicast service but do not support the PTP transmission mode. Therefore, among the 10 bits corresponding to the second list, the remaining 7 bits other than these 3 bits are all the second value.

[0144] In one embodiment, the number of bits of the multicast service neighbor cell information is N times the number of neighbor cells in the neighbor cell list, where N is an integer greater than 1. Every N bits of the multicast service neighbor cell information corresponds to a neighbor cell in the neighbor cell list.

[0145] Taking N=2 as an example, in this embodiment, the number of bits of the multicast service neighbor cell information may be twice the number of neighbor cells in the neighbor cell list, and every two bits of the multicast service neighbor cell information corresponds to a neighbor cell in the neighbor cell list.

[0146] Among them, for a specific multicast service, for every 2 bits of the multicast service neighboring cell information, 1 bit can be used to indicate whether the corresponding neighboring cell supports the PTP transmission mode, and the other bit can be used to indicate whether the corresponding neighboring cell supports the PTM transmission mode; or, every 2 bits can be regarded as a combination, and these 2 bits jointly indicate whether the same neighboring cell in the neighboring cell list supports the PTP transmission mode and / or the PTM transmission mode.

[0147] In one embodiment, the bits corresponding to each adjacent cell may be adjacent bits or non-adjacent bits. This embodiment does not limit the position of the bits corresponding to an adjacent cell. Taking N=2 as an example, if the neighbor cell list involves 15 neighbor cells, the multicast service neighbor cell information corresponding to each multicast service requires 30 bits to indicate. 15 neighbor cells correspond to 30 bits. Therefore, for the multicast service neighbor cell information of a certain multicast service, the first two bits of the 30 bits can be used to jointly indicate the first neighbor cell. That is, the first bit of the multicast service neighbor cell information is used to indicate whether the first neighbor cell in the neighbor cell list supports transmission of the multicast service in the PTP transmission mode, and the second bit is used to indicate whether the first neighbor cell in the neighbor cell list supports transmission of the multicast service in the PTM transmission mode. Alternatively, the first and 16th bits of the 30 bits can be used to jointly indicate. That is, the first bit of the multicast service neighbor cell information is used to indicate whether the first neighbor cell in the neighbor cell list supports transmission of the multicast service in the PTP transmission mode, and the 16th bit is used to indicate whether the first neighbor cell in the neighbor cell list supports transmission of the multicast service in the PTM transmission mode. The method of indicating the 2nd, 3rd...15th adjacent cells is similar and will not be described here.

[0148] In one embodiment, of every two bits of the multicast service neighboring cell information, the first bit is used to indicate whether the neighboring cell supports providing multicast services through the PTP transmission mode, and the second bit is used to indicate whether the neighboring cell supports providing multicast services through the PTM transmission mode;

[0149] The first bit has a first value, indicating that the neighboring cell corresponding to the bit supports the provision of multicast services through the PTP transmission mode; the first bit has a second value, indicating that the neighboring cell corresponding to the bit does not support the provision of multicast services through the PTP transmission mode;

[0150] The second bit value is the first value, indicating that the adjacent cell corresponding to the bit supports providing multicast services through the PTM transmission mode; the second bit value is the second value, indicating that the adjacent cell corresponding to the bit does not support providing multicast services through the PTM transmission mode.

[0151] The first value may be 1, and the second value may be 0; or the first value may be 0, and the second value may be 1.

[0152] For example, the neighbor cell list involves two neighbor cells Cell1 and Cell2. For the multicast service MBS1, the multicast service neighbor cell information includes the following bits: B 11 B 12 B 13 B 14If Cell1 supports the provision of multicast service MBS1 via PTP transmission, then B 11 The value is the first value. If Cell1 does not support the multicast service MBS1 through PTP transmission, then B 11 The value is the second value; if Cell1 supports providing multicast service MBS1 through PTM transmission mode, then B 12 The value is the first value. If Cell1 does not support the multicast service MBS1 through PTM transmission, then B 12 The value is the second value; if Cell2 supports providing multicast service MBS1 through PTP transmission, then B 13 The value is the first value. If Cell2 does not support the multicast service MBS1 through PTP transmission, then B 13 The value is the second value; if Cell2 supports providing multicast service MBS1 through PTM transmission mode, then B 14 The value is the first value. If Cell1 does not support the multicast service MBS1 through PTM transmission, then B 14 The value is the second value.

[0153] Taking N≥2 as an example, in this embodiment, the number of bits of the multicast service neighbor cell information may be N times the number of neighbor cells in the neighbor cell list, and every N bits of the multicast service neighbor cell information corresponds to a neighbor cell in the neighbor cell list.

[0154] For a specific multicast service, at least one bit in every N bits of the multicast service neighboring cell information is used to indicate whether the corresponding neighboring cell supports the PTP transmission mode. Optionally, at least one additional bit in every N bits is used to indicate whether the corresponding neighboring cell supports the PTM transmission mode.

[0155] For example, the adjacent cell list involves three adjacent cells Cell1, Cell2 and Cell3. The number of adjacent cells is 3. For the multicast service MBS1, the number of bits of the multicast service adjacent cell information is also 3. The adjacent cell list is arranged in order as Cell1, Cell2, Cell3. The first N bits B in the corresponding multicast service adjacent cell information are 11 ...B 1N At least one bit is used to indicate whether Cell1 supports PTP transmission mode, for example, B 11 Used to indicate whether Cell1 supports PTP transmission mode, the middle N bits B 21 ...B 2N At least one bit is used to indicate whether Cell2 supports PTP transmission mode, for example, B 21Used to indicate whether Cell1 supports PTP transmission mode. The last N bits B 31 ...B 3N At least one bit is used to indicate whether Cell3 supports PTP transmission mode, for example, B 31 Used to indicate whether Cell1 supports PTP transmission mode. The multicast service neighboring cell information includes the following bits: B 11 ...B 1N B 21 ...B 2N B 31 ...B 3N , where B 11 、B 21 、B 31 It is used to indicate whether Cell1, Cell2, and Cell3 support the PTP transmission mode to transmit the multicast service MBS1.

[0156] For another example, the adjacent cell list involves three adjacent cells, Cell1, Cell2 and Cell3. The number of adjacent cells is 3. For the multicast service MBS1, the number of bits of the multicast service adjacent cell information is also 3. The adjacent cell list is arranged in order as Cell1, Cell2, Cell3. The first N bits B in the corresponding multicast service adjacent cell information are 11 ...B 1N At least one bit is used to indicate whether Cell1 supports PTP transmission mode, for example, B 11 Used to indicate whether Cell1 supports PTP transmission mode, B 12 Used to indicate whether Cell1 supports PTP transmission mode, the middle N bits B 21 ...B 2N At least one bit is used to indicate whether Cell2 supports PTP transmission mode, for example, B 21 Used to indicate whether Cell1 supports PTP transmission mode, B 22 Used to indicate whether Cell1 supports PTP transmission mode. The last N bits B 31 ...B 3N At least one bit is used to indicate whether Cell3 supports PTP transmission mode, for example, B 31 Used to indicate whether Cell1 supports PTP transmission mode, B 32 Used to indicate whether Cell1 supports PTP transmission mode. The multicast service neighboring cell information includes the following bits: B 11 ...B 1N B 21 ...B 2N B 31 ...B3N , where B 11 、B 21 、B 31 It is used to indicate whether Cell1, Cell2 and Cell3 support PTP transmission mode to transmit multicast services MBS1, B 12 、B 22 、B 32 It is used to indicate whether Cell1, Cell2 and Cell3 support the PTM transmission mode to transmit the multicast service MBS1.

[0157] Furthermore, B 11 、B 21 、B 31 This is the first bit described below, B 11 、B 21 、B 31 The first value indicates that the Cell1, Cell2, and Cell3 corresponding to the bit support multicast services through PTP transmission. The second value indicates that the Cell1, Cell2, and Cell3 corresponding to the bit do not support multicast services through PTP transmission. 12 、B 22 、B 32 This is the second bit described below, B 12 、B 22 、B 32 The first value indicates that the corresponding Cell1, Cell2, and Cell3 support multicast services through PTM transmission. 12 、B 22 、B 32 The second value indicates that the corresponding Cell1, Cell2, and Cell3 do not support multicast services through PTM transmission. The first value can be 1 and the second value can be 0; or the first value can be 0 and the second value can be 1.

[0158] Among them, for a specific multicast service, every N bits of the multicast service neighboring cell information can be regarded as a combination, the neighboring cells in the neighboring cell list correspond one to one and in sequence to the bit combination of the multicast service neighboring cell information, and every N bits can be used to jointly indicate whether the same neighboring cell in the neighboring cell list supports the PTP transmission mode and / or the PTM transmission mode.

[0159] In one embodiment, the bits corresponding to each adjacent cell may be adjacent bits or non-adjacent bits. This embodiment does not limit the position of the bit corresponding to an adjacent cell. Taking N=3 as an example, if the adjacent cell list involves 15 adjacent cells, the multicast service adjacent cell information corresponding to each multicast service requires 45 bits to indicate, and 15 adjacent cells correspond to 45 bits. Then, for the multicast service adjacent cell information of a certain multicast service, the first adjacent cell can be indicated by the first 3 bits of the 45 bits, or the first adjacent cell can be jointly indicated by the first, 16th, and 31st bits of the 45 bits. The method of indicating the second, third, ..., 15th adjacent cells is similar and will not be repeated here.

[0160] For example, the adjacent cell list involves three adjacent cells Cell1, Cell2 and Cell3. The number of adjacent cells is 3. For the multicast service MBS1, the number of bits of the multicast service adjacent cell information is also 3. The adjacent cell list is arranged in order as Cell1, Cell2, Cell3. The first N bits B in the corresponding multicast service adjacent cell information are 11 ...B 1N Used to indicate whether Cell1 supports PTP transmission mode, the middle N bits B 21 ...B 2N Used to indicate whether Cell2 supports PTP transmission mode. The last N bits B 31 ...B 3N Used to indicate whether Cell3 supports PTP transmission mode. The multicast service neighboring cell information includes the following bits: B 11 ...B 1N B 21 ...B 2N B 31 ...B 3N .

[0161] Taking N=3 as an example, for the multicast service MBS1, if Cell1 supports PTP transmission mode, then B 11 ...B 1N Set to 001, otherwise set it to 000. If Cell2 supports PTP transmission mode, set B 21 ...B 2N Set to 001, otherwise set it to 000. If Cell3 supports PTP transmission mode, set B 31 ...B 3N Set to 001, otherwise set to 000. If the multicast service MBS1 does not support the PTP transmission mode in any adjacent cell, all bits in the multicast service adjacent cell information corresponding to the multicast service MBS1 are set to 0.

[0162] N bits can also be used to indicate whether the corresponding neighboring cell supports the PTP transmission mode and the PTM transmission mode. For example, the neighboring cell list involves three neighboring cells Cell1, Cell2 and Cell3, the number of neighboring cells is 3, for the multicast service MBS1, the number of bits of the multicast service neighboring cell information is also 3, the neighboring cell list is arranged in order as Cell1, Cell2, Cell3, and the first N bits B in the corresponding multicast service neighboring cell information are 11 ...B 1N Used to indicate whether Cell1 supports PTP transmission mode and whether it supports PTM transmission mode. The middle N bits B 21 ...B 2N Used to indicate whether Cell2 supports PTP transmission mode and whether it supports PTM transmission mode. The last N bits B 31 ...B 3N Used to indicate whether Cell3 supports PTP transmission mode and whether it supports PTM transmission mode. The multicast service neighboring cell information includes the following bits: B 11 ...B 1N B 21 ...B 2N B 31 …B 3N .

[0163] Taking N=3 as an example, for the multicast service MBS1, if Cell1 supports both PTP and PTM transmission modes, then B 11 ...B 1N Set to 001, if Cell1 supports PTP transmission mode but not PTM transmission mode, then B 11 ...B 1N Set to 0010, if Cell1 does not support PTP transmission mode but PTM transmission mode, then B 11 ...B 1N Set to 011, if Cell1 does not support PTP transmission mode or PTM transmission mode, then B 11 ...B 1N Set to 000. If the multicast service MBS1 does not support the PTP transmission mode in any adjacent cell, all bits in the multicast service adjacent cell information corresponding to the multicast service MBS1 are set to 0.

[0164] Referring to the above example, in the current communication system, there are multiple UEs in the current cell O, and some of the UEs can receive multiple multicast services MBS1, MBS2, MBS3, ... MBS in RRC_INACTIVE mode. NAmong them, there are 10 neighboring cells that support PTM transmission mode to provide multicast services that can be received by UE in RRC_INACTIVE state in the current cell, namely Cell1, Cell2, Cell3, ... Cell 10 , there are 8 adjacent cells that support PTP transmission mode, namely Cell8, Cell9, Cell 10 , ...Cell 15 , and there are 3 adjacent cells that support both PTM and PTP transmission modes, namely Cell8, Cell9 and Cell 10 , then the multicast service MBS that can be received by the UE in RRC_INACTIVE in the current cell O n , the number of bits of the corresponding multicast neighbor cell information is N times the number of neighbor cells in the neighbor cell list. The number of bits of the multicast neighbor cell information can be any of the following forms:

[0165] If the neighbor cell information list involves 15 neighbor cells, the multicast service neighbor cell information may include 15×N bits. Among the 15×N bits, every N bits may be used to jointly indicate whether a corresponding neighbor cell in the neighbor cell list supports transmission of the multicast service in the PTP transmission mode or the PTM transmission mode.

[0166] If the neighbor cell information list involves three neighbor cells, the multicast service neighbor cell information may include 3×N bits, where each N bits may be used to jointly indicate whether a corresponding neighbor cell in the neighbor cell list that supports both transmission modes supports transmission of the multicast service in the PTP transmission mode or the PTM transmission mode.

[0167] If the neighbor cell information list involves 8 neighbor cells, the multicast service neighbor cell information may include 8×N bits, where each N bits of the 8×N bits may be used to jointly indicate whether a corresponding neighbor cell supporting the PTP transmission mode in the neighbor cell list supports transmission of the multicast service in the PTP transmission mode or the PTM transmission mode.

[0168] If the neighbor cell information list involves 10 neighbor cells, the multicast service neighbor cell information may include 10×N bits. Among the 10×N bits, every N bits may be used to jointly indicate whether a corresponding neighbor cell supporting the PTM transmission mode in the neighbor cell list supports transmission of the multicast service in the PTP transmission mode or the PTM transmission mode.

[0169] If the neighboring cell information list involves two lists, with 8 neighboring cells and 10 neighboring cells respectively, the multicast service neighboring cell information may include 8×N bits and 10×N bits. Among the 8×N bits, every N bits can be used to jointly indicate whether a corresponding neighboring cell supporting the PTP transmission mode in the neighboring cell list supports the transmission of this multicast service in the PTP transmission mode / PTM transmission mode. Among the 10×N bits, every N bits can be used to jointly indicate whether a corresponding neighboring cell supporting the PTM transmission mode in the neighboring cell list supports the transmission of this multicast service in the PTP transmission mode / PTM transmission mode.

[0170] In one embodiment, in every N bits of the multicast service neighboring cell information, the first bit is used to indicate whether the neighboring cell supports providing the multicast service through the PTP transmission mode, and the second bit is used to indicate whether the neighboring cell supports providing the multicast service through the PTM transmission mode;

[0171] The first bit has a first value, indicating that the neighboring cell corresponding to the bit supports the provision of multicast services through the PTP transmission mode; the first bit has a second value, indicating that the neighboring cell corresponding to the bit does not support the provision of multicast services through the PTP transmission mode;

[0172] The second bit value is the first value, indicating that the adjacent cell corresponding to the bit supports providing multicast services through the PTM transmission mode; the second bit value is the second value, indicating that the adjacent cell corresponding to the bit does not support providing multicast services through the PTM transmission mode.

[0173] The first value may be 1, and the second value may be 0; or the first value may be 0, and the second value may be 1.

[0174] It should be noted that, if N ≥ 2, the first bit corresponding to a single neighboring cell includes at least one bit, and the second bit corresponding to a single neighboring cell includes at least one bit. When N = 2, of the two bits corresponding to a single neighboring cell, one bit is used to indicate whether the neighboring cell supports multicast services via the PTP transmission mode, and the other bit is used to indicate whether the neighboring cell supports multicast services via the PTM transmission mode. When N > 2, of the N bits corresponding to a single neighboring cell, at least one bit is used to indicate whether the neighboring cell supports multicast services via the PTP transmission mode, and at least one other bit is used to indicate whether the neighboring cell supports multicast services via the PTM transmission mode.

[0175] Referring to the above example, in the current communication system, there are multiple UEs in the current cell O, and some of the UEs can receive multiple multicast services MBS1, MBS2, MBS3, ... MBS in RRC_INACTIVE mode. NAmong them, there are 10 neighboring cells that support PTM transmission mode to provide multicast services that can be received by UE in RRC_INACTIVE state in the current cell, namely Cell1, Cell2, Cell3, ... Cell 10 , there are 8 adjacent cells that support PTP transmission mode, namely Cell8, Cell9, Cell 10 , ...Cell 15 , and there are 3 adjacent cells that support both PTM and PTP transmission modes, namely Cell8, Cell9 and Cell 10 , then the multicast service MBS that can be received by the UE in RRC_INACTIVE in the current cell O n , the corresponding number of bits of multicast neighboring cell information is N times the number of neighboring cells in the neighboring cell list. The bit value of multicast neighboring cell information can be any of the following forms:

[0176] If the neighboring cell information list includes 15 neighboring cells that support the PTP transmission mode and / or the PTM transmission mode, the multicast service neighboring cell information may include 15×N bits. Specifically, if there are 8 neighboring cells in the communication system that support the transmission of one or more multicast services via the PTP transmission mode and 10 neighboring cells that support the transmission of one or more multicast services via the PTM transmission mode, then for a multicast service being carried out in the current cell: the corresponding 15×N bits of the multicast service neighboring cell information include 15 first bits and 15 second bits, of which at most 8 first bits have the first value and the remaining (at least 7) ​​first bits have the second value; at most 10 second bits have the first value and the remaining (at least 5) second bits have the second value.

[0177] Referring to the above example, if the neighbor cell information list includes three neighboring cells that support both the PTM and PTP transmission modes, the multicast service neighbor cell information may include 3×N bits. For a multicast service running in the current cell, the corresponding 3×N bits of the multicast service neighbor cell information include three first bits and three second bits, where each first bit can have either the first value or the second value, and each second bit can have either the first value or the second value.

[0178] Referring to the above example, if the neighboring cell information list includes eight neighboring cells that support the PTP transmission mode, the multicast service neighboring cell information may include 8×N bits. Specifically, if there are eight neighboring cells in the communication system that support the transmission of one or more multicast services via the PTP transmission mode, then for a multicast service being carried out in the current cell, the corresponding 8×N bits of the multicast service neighboring cell information include eight first bits and eight second bits. If several of the eight neighboring cells support the PTP transmission mode for the multicast service, then several of the eight first bits corresponding to the multicast service will have the first value, while the remaining first bits will have the second value. Furthermore, if three of the eight neighboring cells also support the PTM transmission mode, then the corresponding 3×N bits include three second bits. Therefore, if several of these three neighboring cells support the PTM transmission mode for the multicast service, then several of the three second bits will have the first value, while the remaining second bits will have the second value.

[0179] Referring to the above example, if the neighbor cell information list includes 10 neighbor cells that support the PTM transmission mode, the multicast service neighbor cell information may include 10×N bits. Specifically, if there are 10 neighbor cells in the system that support the transmission of one or more multicast services using the PTM transmission mode, then for a multicast service being carried out in the current cell: 10 first bits and 10 second bits are included in the 10×N bits. Of these 10 neighbor cells, 3 also support the PTP transmission mode, and 3 of the corresponding 3N bits include 3 first bits. Therefore, if several of these 3 neighbor cells support the transmission of the multicast service using the PTP transmission mode, then several of the 3 first bits corresponding to these 3 neighbor cells will have the first value, while the remaining first bits will have the second value. Furthermore, if several of these 10 neighbor cells support the transmission of the multicast service using the PTM transmission mode, then several of the 10 second bits corresponding to these 10 neighbor cells will have the first value, while the remaining second bits will have the second value.

[0180] Referring to the above example, if the neighbor cell information list involves two lists, one with 8 cells and the other with 10 cells, the multicast service neighbor cell information can include a total of 8×N+10×N bits. It can be understood that for the current multicast service, 3N bits in each of the two lists correspond to three neighboring cells that support both PTM and PTP transmission modes. The values ​​of these 3N bits in the two lists should be consistent.

[0181] Specifically, there are 8 neighboring cells in the system that support the transmission of one or more multicast services through the PTP transmission mode, and 10 neighboring cells that support the transmission of one or more multicast services through the PTM transmission mode. Among them, 3 neighboring cells support both the PTM transmission mode and the PTP transmission mode. For a multicast service in the current cell:

[0182] Among the 8×N bits corresponding to the first list, there are 8 first bits and 8 second bits, where each first bit may have a first value or a second value. Among the 8 neighboring cells supporting the PTP transmission mode involved in the first list, 3 neighboring cells also support the PTM transmission mode. Therefore, if some of these 3 neighboring cells support the transmission of the multicast service using the PTM transmission mode, some of the 3 second bits corresponding to these 3 neighboring cells will have the first value. Among the 8 second bits corresponding to the first list, all second bits except these 3 second bits will have the second value.

[0183] Among the 10×N bits corresponding to the second list, there are 10 first bits and 8 second bits, where each second bit may be the first value or the second value. Among the 10 neighboring cells supporting the PTM transmission mode involved in the second list, 3 neighboring cells also support the PTP transmission mode. Therefore, among these 3 neighboring cells, several neighboring cells support the transmission of the multicast service through the PTP transmission mode. Then, among the 3 first bits corresponding to these 3 neighboring cells, several first bits have the first value, and among the 10 first bits corresponding to the second list, 7 first bits other than these 3 first bits are all the second value.

[0184] In one embodiment, the N bits of the multicast service neighboring cell information are set to a first combination value, indicating that the neighboring cell corresponding to the N bits supports the provision of multicast services through the PTM transmission mode and supports the provision of multicast services through the PTP transmission mode;

[0185] The N bits of the multicast service neighboring cell information have a second combination value, indicating that the neighboring cell corresponding to the N bits supports the provision of multicast services through the PTM transmission mode but does not support the provision of multicast services through the PTP transmission mode;

[0186] The N bits of the multicast service neighboring cell information have a third combination value, indicating that the neighboring cell corresponding to the N bits does not support the PTM transmission mode but supports the provision of multicast services through the PTP transmission mode;

[0187] The N bits of the multicast service neighboring cell information take the fourth combination value, indicating that the neighboring cell corresponding to the N bits does not support the provision of multicast services through the PTM transmission mode and does not support the provision of multicast services through the PTP transmission mode.

[0188] In this embodiment, for a specific multicast service, each neighboring cell in the neighboring cell list may correspond to N bits. The combined value of these N bits is used to jointly indicate whether the corresponding neighboring cell supports the PTP transmission mode. Optionally, it may also be used to indicate whether the PTM transmission mode is supported. Each N bits is considered a bit combination. A bit combination can be understood as a bit sequence or a string consisting of multiple bits. The neighboring cells in the neighboring cell list have a one-to-one correspondence with the bit combinations of the multicast service neighboring cell information.

[0189] For example, the neighbor cell list involves two neighbor cells Cell1 and Cell2. For the multicast service MBS1, the multicast service neighbor cell information includes the following bits: B 11 ...B 1N B 21 ...B 2N If Cell1 supports PTM transmission and PTP transmission to provide multicast service MBS1, then B 11 ...B 1N The value is the first combination value. If Cell1 supports the multicast service MBS1 through PTM transmission mode and does not support the multicast service MBS1 through PTP transmission mode, then B 11 ...B 1N The value is the second combination value; if Cell1 does not support the PTM transmission mode and supports the provision of multicast service MBS1 through PTP transmission mode, then B 11 ...B 1N The value is the third combination value. If Cell1 does not support the PTM transmission mode and does not support the multicast service MBS1 through the PTP transmission mode, then B 11 ...B 1N Similarly, according to whether Cell2 supports providing multicast service MBS1 through PTP transmission mode or PTM transmission mode, B can be determined. 21 ...B 2N The value of .

[0190] In one embodiment, the N bits corresponding to each adjacent cell may be adjacent bits or non-adjacent bits. This embodiment does not limit the position of the N bits corresponding to an adjacent cell.

[0191] The first combination value, the second combination value, the third combination value, and the fourth combination value are different. Taking N=2 as an example, the first combination value can be 00, the second combination value can be 01, the first combination value can be 11, and the first combination value can be 11. Taking N=3 as an example, the first combination value can be 000, the second combination value can be 001, the first combination value can be 010, and the first combination value can be 011.

[0192] Referring to the above example, in the current communication system, there are multiple UEs in the current cell O, and some of the UEs can receive multiple multicast services MBS1, MBS2, MBS3, ... MBS in RRC_INACTIVE mode. N Among them, there are 10 neighboring cells that support PTM transmission mode to provide multicast services that can be received by UE in RRC_INACTIVE state in the current cell, namely Cell1, Cell2, Cell3, ... Cell 10 , there are 8 adjacent cells that support PTP transmission mode, namely Cell8, Cell9, Cell 10 , ...Cell 15 , and there are 3 adjacent cells that support both PTM and PTP transmission modes, namely Cell8, Cell9 and Cell 10 , then the multicast service MBS that can be received by the UE in RRC_INACTIVE in the current cell O n , the corresponding number of bits of multicast neighboring cell information is N times the number of neighboring cells in the neighboring cell list. The bit value of multicast neighboring cell information can be any of the following forms:

[0193] If the neighboring cell information list includes 15 neighboring cells that support the PTP transmission mode and / or the PTM transmission mode, the multicast service neighboring cell information may include 15 groups of bits (N bits per group, for a total of 15×N bits). Specifically, if the system has 8 neighboring cells that support the transmission of one or more multicast services via the PTP transmission mode and 10 neighboring cells that support the transmission of one or more multicast services via the PTM transmission mode, then for a multicast service being carried out in the current cell, of the 15 groups of bits, at most 8 groups of bits may have a combination value of the first combination value or the third combination value, and the remaining group of bits (at least 7 groups of bits) may have a combination value of the second value.

[0194] Referring to the above example, if the neighboring cell information list includes three neighboring cells that support both PTM and PTP transmission modes, the multicast service neighboring cell information may include three groups of bits (N bits per group, for a total of 3×N bits). For a multicast service running in the current cell, the N bits in each of the three groups of bits may be any of the above combinations.

[0195] Referring to the above example, if the neighboring cell information list includes eight neighboring cells that support the PTP transmission mode, the multicast service neighboring cell information may include eight groups of bits (N bits per group, for a total of 8×N bits). Specifically, if the system includes eight neighboring cells that support the transmission of one or more multicast services via the PTP transmission mode, and ten neighboring cells that support the transmission of one or more multicast services via the PTM transmission mode, and three of the neighboring cells support both the PTM and PTP transmission modes, then for a multicast service being carried out in the current cell: of the three groups of bits (3N in total) corresponding to the three neighboring cells, the N bits in each group may be any of the above combination values, with at most three groups of bits being the first combination value or the third combination value, and of the five groups of bits corresponding to the other five neighboring cells, the N bits in each group may be the second combination value or the fourth combination value.

[0196] Referring to the above example, if the neighbor cell information list includes 10 neighbor cells that support the PTM transmission mode, the multicast service neighbor cell information may include 10 groups of bits (N bits per group, for a total of 10×N bits). Specifically, if the system includes 8 neighbor cells that support the transmission of one or more multicast services via the PTP transmission mode, and 10 neighbor cells that support the transmission of one or more multicast services via the PTM transmission mode, and 3 of these neighbor cells support both the PTM and PTP transmission modes, then for a multicast service being carried out in the current cell: in the 3 groups of bits corresponding to the 3 neighbor cells, the N bits in each group may be any of the above combination values, with at most 3 groups of bits being the first combination value or the third combination value, and in the 7 groups of bits corresponding to the other 7 neighbor cells, the N bits in each group may be the second combination value or the fourth combination value.

[0197] Referring to the above example, if the neighbor cell information list involves two lists, with 8 and 10 cells respectively, then the multicast service neighbor cell information may include 8 groups of bits and 10 groups of bits (a total of 8×N+10×N bits). It can be understood that for the current multicast service, there are 3 groups of bits in each of the two lists corresponding to 3 neighboring cells that support both PTM and PTP transmission modes. The values ​​of these 3 groups of bits in the two lists should be consistent.

[0198] Specifically, there are 8 neighboring cells in the system that support the transmission of one or more multicast services through the PTP transmission mode, and 10 neighboring cells that support the transmission of one or more multicast services through the PTM transmission mode. Among them, 3 neighboring cells support both the PTM transmission mode and the PTP transmission mode. For a multicast service in the current cell:

[0199] Among the 8 groups of bits corresponding to the first list, the 3 groups of bits corresponding to the 3 neighboring cells that support both transmission modes may have N bits in each group that can have any of the above combination values, and at most 3 groups of bits may have the first combination value or the third combination value. In addition, among the 5 groups of bits corresponding to the other 5 neighboring cells, the N bits in each group may have the second combination value or the fourth combination value.

[0200] Among the 10 groups of bits corresponding to the second list, the 3 groups of bits corresponding to the 3 adjacent cells that support two transmission modes, the N bits in each group may be any of the above combination values, and at most 3 groups of bits are the first combination value or the third combination value, and among the 7 groups of bits corresponding to the other 7 adjacent cells, the N bits in each group may be the second combination value or the fourth combination value.

[0201] In one embodiment, the multicast service includes a multicast service carried out in the current cell and capable of being received by a user equipment UE in an RRC connected state.

[0202] Among them, for a multicast service that can be received by a user equipment UE in an RRC connected state, after entering a corresponding neighboring cell, the UE can continue to receive the multicast service in an RRC connected state using a PTM transmission mode and a PTP transmission mode.

[0203] In this embodiment, the neighboring cells included in the neighboring cell list meet the following conditions: for the multicast service provided by the current cell that can be received by the UE in the RRC_CONNECTED state, the neighboring cell can provide at least one service through the PTM transmission mode and / or the PTP transmission mode.

[0204] In one embodiment, the indication information is carried by an RRC reconfiguration message.

[0205] In this embodiment, the network device may also send indication information to the UE via an RRC reconfiguration message. In this case, the indication information may be used to instruct the UE in the RRC_CONNECTED state to receive multicast services. Accordingly, the UE receives the RRC reconfiguration message, and then obtains the indication information carried by the RRC reconfiguration message, thereby enabling the UE to clearly understand whether the neighboring cells support transmission via point-to-point PTP transmission mode and / or point-to-multipoint PTM transmission mode for the multicast services that can be received by the user equipment UE in the RRC connected state in the current cell. The indication information may include a neighboring cell list, which is used to indicate neighboring cells that support the provision of multicast services in the current cell via PTP transmission mode and / or PTM transmission mode; the indication information may also include multicast service neighboring cell information, which is used to indicate whether the neighboring cells in the neighboring cell list support the provision of multicast services via PTP transmission mode and / or PTM transmission mode for each multicast service in the current cell.

[0206] Figure 2 is a flow chart of an information receiving method provided in an embodiment of the present application. This embodiment is applicable to information receiving situations. Specifically, the information sending method can be executed by an information receiving device, which can be implemented in software and / or hardware and integrated into a network device.

[0207] It should be noted that for details not fully described in this embodiment, reference may be made to any of the above embodiments.

[0208] As shown in FIG2 , the method specifically includes the following steps:

[0209] S210: Receive indication information, where the indication information is used to indicate whether the neighboring cell supports providing a multicast service in the current cell through a point-to-point PTP transmission mode and / or a point-to-multipoint PTM transmission mode.

[0210] S220: Receive the multicast service according to the indication information.

[0211] This embodiment introduces indication information to indicate whether a neighboring cell can provide a multicast service running in the current cell using PTM transmission and / or PTP transmission. The UE can correctly understand and operate based on the indication information, thereby receiving the multicast service in the neighboring cell and improving the reliability and continuity of the multicast service.

[0212] Before a UE enters a neighboring cell, it can also reselect a cell based on the transmission mode supported by the neighboring cell for multicast services. When performing cell reselection, it can also make the correct decision by comprehensively considering the priority of the multicast service, network resources, and the transmission mode supported by the neighboring cell. For example, for higher-priority multicast services, priority can be given to entering a neighboring cell that supports both PTM and PTP transmission modes. It should be noted that whether PTM and / or PTP transmission modes are supported can be considered as one of the factors for cell reselection, but other factors may also be considered in actual applications.

[0213] On the basis of the UE performing cell reselection, different operations may be taken according to the transmission mode supported by the neighboring cell for the multicast service, such as obtaining the multicast service configuration information of the multicast service in the MBS multicast configuration information and receiving the multicast service accordingly. For example, when the UE receiving the multicast service in the RRC_INACTIVE state in the current cell reselects to a neighboring cell through the cell reselection process, it may prepare to restore to the RRC connected state (RRC_CONNECTED) and receive the multicast service through the PTP mode in the neighboring cell; for example, if the UE receiving the service in the RRC_INACTIVE state in the current cell reselects to a neighboring cell through the cell reselection process, and before the UE moves to the neighboring cell (or before establishing an RRC connection with the neighboring cell), it may request the PTP transmission mode of the multicast service from the network device and receive the service through the PTP transmission mode in the neighboring cell, etc.

[0214] If the neighboring cell supports the PTP transmission mode, the UE can receive multicast services from the neighboring cell in the connected state (the neighboring cell is within the service transmission area). If the neighboring cell supports the PTM transmission mode, the UE can receive multicast services from the neighboring cell in both the connected and inactive states. In addition, if both PTM and PTP transmission modes are supported, PTM transmission mode is preferred.

[0215] Among them, if the adjacent cell corresponding to the multicast service does not support the PTM transmission mode but supports the PTP transmission mode, after the UE enters the adjacent cell, it can directly send a request to obtain the multicast service data to the network device when receiving the multicast service, and the network device will directly send the multicast service data to the user.

[0216] Among them, if the adjacent cell corresponding to the multicast service does not support the PTM transmission mode or the PTP transmission mode, the UE may need to request unicast reception of the multicast service (i.e., PTP transmission mode) before moving to the adjacent cell (or before establishing an RRC connection with the adjacent cell) to receive the service through the PTP transmission mode in the adjacent cell.

[0217] In one embodiment, the multicast service includes a multicast service carried out in the current cell and capable of being received by a UE in a radio resource control (RRC) inactive state.

[0218] In one embodiment, the indication information includes a neighboring cell list, where the neighboring cell list is used to indicate neighboring cells that support providing a multicast service in the current cell through a PTP transmission mode and / or a PTM transmission mode.

[0219] In one embodiment, the indication information is included in the MBS multicast configuration information;

[0220] The MBS multicast configuration information is carried by an RRC release message and / or an MBS multicast control channel message.

[0221] In one embodiment, the neighbor cell list includes one of the following:

[0222] Supports providing a list of neighboring cells for multicast services in the current cell via PTP transmission mode and / or PTM transmission mode;

[0223] Supports providing a list of neighboring cells for multicast services in the current cell through PTP and PTM transmission modes;

[0224] Supports providing a list of neighboring cells for multicast services in the current cell via PTP transmission;

[0225] Supports providing a list of neighboring cells for multicast services in the current cell through PTM transmission;

[0226] Supports providing a list of neighboring cells for multicast services in the current cell through PTP transmission and supports providing a list of neighboring cells for multicast services in the current cell through PTM transmission.

[0227] In one embodiment, the indication information includes multicast service neighboring cell information, which is used to indicate whether, for each multicast service performed in the current cell, the neighboring cells in the neighboring cell list support providing multicast services through PTP transmission mode and / or PTM transmission mode.

[0228] In one embodiment, the number of bits of the multicast service neighbor cell information is equal to the number of neighbor cells in the neighbor cell list.

[0229] In one embodiment, a single bit of the multicast service neighboring cell information takes a first value, indicating that the neighboring cell corresponding to the bit supports providing multicast services through the PTP transmission mode;

[0230] The single bit value of the multicast service neighboring cell information is the second value, indicating that the neighboring cell corresponding to the bit does not support the provision of multicast services through the PTP transmission mode.

[0231] In one embodiment, the number of bits of the multicast service neighbor cell information is N times the number of neighbor cells in the neighbor cell list, where N is an integer greater than 1;

[0232] Every N bits of the multicast service neighbor cell information correspond to a neighbor cell in the neighbor cell list.

[0233] In one embodiment, in every N bits of the multicast service neighboring cell information, the first bit is used to indicate whether the neighboring cell supports providing the multicast service through the PTP transmission mode, and the second bit is used to indicate whether the neighboring cell supports providing the multicast service through the PTM transmission mode;

[0234] The first bit is set to the first value, indicating that the adjacent cell corresponding to the bit supports providing multicast services through the PTP transmission mode;

[0235] The first bit takes the second value, indicating that the adjacent cell corresponding to the bit does not support providing multicast services through the PTP transmission mode.

[0236] The second bit takes the first value, indicating that the adjacent cell corresponding to the bit supports multicast services through PTM transmission mode;

[0237] The second bit takes the second value, indicating that the adjacent cell corresponding to the bit does not support multicast services through the PTM transmission mode.

[0238] In one embodiment, the N bits of the multicast service neighboring cell information are set to a first combination value, indicating that the neighboring cell corresponding to the N bits supports the provision of multicast services through the PTM transmission mode and supports the provision of multicast services through the PTP transmission mode;

[0239] The N bits of the multicast service neighboring cell information have a second combination value, indicating that the neighboring cell corresponding to the N bits supports the provision of multicast services through the PTM transmission mode but does not support the provision of multicast services through the PTP transmission mode;

[0240] The N bits of the multicast service neighboring cell information have a third combination value, indicating that the neighboring cell corresponding to the N bits does not support the PTM transmission mode but supports the provision of multicast services through the PTP transmission mode;

[0241] The N bits of the multicast service neighboring cell information take the fourth combination value, indicating that the neighboring cell corresponding to the N bits does not support the provision of multicast services through the PTM transmission mode and does not support the provision of multicast services through the PTP transmission mode.

[0242] In one embodiment, the multicast service neighboring cell information is included in the multicast service configuration information of the corresponding multicast service;

[0243] The multicast service configuration information is included in the MBS multicast configuration information;

[0244] The MBS multicast configuration information is carried by an RRC release message and / or an MBS multicast control channel message.

[0245] In one embodiment, the multicast service includes a multicast service carried out in the current cell and capable of being received by a user equipment UE in an RRC connected state.

[0246] In one embodiment, the indication information is carried by an RRC reconfiguration message.

[0247] FIG3 is a schematic diagram of the structure of an information sending device provided in an embodiment of the present application. The information sending device provided in this embodiment includes:

[0248] A generating module 310 is configured to generate indication information, wherein the indication information is used to indicate whether the neighboring cell supports providing a multicast service in the current cell through a point-to-point PTP transmission mode and / or a point-to-multipoint PTM transmission mode;

[0249] The information sending module 320 is configured to send the indication information to the user equipment UE.

[0250] In one embodiment, the multicast service includes a multicast service carried out in the current cell and capable of being received by a UE in a radio resource control (RRC) inactive state.

[0251] In one embodiment, the indication information includes a neighboring cell list, where the neighboring cell list is used to indicate neighboring cells that support providing a multicast service in the current cell through a PTP transmission mode and / or a PTM transmission mode.

[0252] In one embodiment, the indication information is included in the MBS multicast configuration information;

[0253] The MBS multicast configuration information is carried by an RRC release message and / or an MBS multicast control channel message.

[0254] In one embodiment, the neighboring cell list includes one of the following:

[0255] Supports providing a list of neighboring cells for multicast services in the current cell via PTP transmission mode and / or PTM transmission mode;

[0256] Supports providing a list of neighboring cells for multicast services in the current cell through PTP and PTM transmission modes;

[0257] Supports providing a list of neighboring cells for multicast services in the current cell via PTP transmission;

[0258] Supports providing a list of neighboring cells for multicast services in the current cell through PTM transmission;

[0259] Supports providing a list of neighboring cells for multicast services in the current cell through PTP transmission and supports providing a list of neighboring cells for multicast services in the current cell through PTM transmission.

[0260] In one embodiment, the indication information includes multicast service neighboring cell information, and the multicast service neighboring cell information is used to indicate whether, for each multicast service performed in the current cell, the neighboring cells in the neighboring cell list support providing the multicast service through the PTP transmission mode and / or the PTM transmission mode.

[0261] In one embodiment, the multicast service neighboring cell information is included in the multicast service configuration information of the corresponding multicast service;

[0262] The multicast service configuration information is included in the MBS multicast configuration information;

[0263] The MBS multicast configuration information is carried by an RRC release message and / or an MBS multicast control channel message.

[0264] In one embodiment, the number of bits of the multicast service neighboring cell information is equal to the number of neighboring cells in the neighboring cell list.

[0265] In one embodiment, a single bit of the multicast service neighboring cell information has a first value, indicating that the neighboring cell corresponding to the bit supports providing the multicast service through the PTP transmission mode;

[0266] A single bit of the multicast service neighboring cell information takes a second value, indicating that the neighboring cell corresponding to the bit does not support provision of the multicast service through the PTP transmission mode.

[0267] In one embodiment, the number of bits of the multicast service neighboring cell information is N times the number of neighboring cells in the neighboring cell list, where N is an integer greater than 1.

[0268] Every N bits of the multicast service neighboring cell information corresponds to a neighboring cell in the neighboring cell list.

[0269] In one embodiment, in every N bits of the multicast service neighboring cell information, the first bit is used to indicate whether the neighboring cell supports providing the multicast service through the PTP transmission mode, and the second bit is used to indicate whether the neighboring cell supports providing the multicast service through the PTM transmission mode;

[0270] The first bit has a first value, indicating that the neighboring cell corresponding to the bit supports providing the multicast service through the PTP transmission mode;

[0271] The first bit takes the second value, indicating that the neighboring cell corresponding to the bit does not support providing the multicast service through the PTP transmission mode.

[0272] The second bit has a first value, indicating that the neighboring cell corresponding to the bit supports providing the multicast service through the PTM transmission mode;

[0273] The second bit takes a second value, indicating that the neighboring cell corresponding to the bit does not support providing the multicast service through the PTM transmission mode.

[0274] In one embodiment, the N bits of the multicast service neighboring cell information are set to a first combination value, indicating that the neighboring cell corresponding to the N bits supports providing the multicast service through a PTM transmission mode and supports providing the multicast service through a PTP transmission mode;

[0275] The N bits of the multicast service neighboring cell information are a second combination value, indicating that the neighboring cells corresponding to the N bits support providing the multicast service through the PTM transmission mode and do not support providing the multicast service through the PTP transmission mode;

[0276] The N bits of the multicast service neighboring cell information have a third combination value, indicating that the neighboring cell corresponding to the N bits does not support the multicast service through the PTM transmission mode but supports the provision of the multicast service through the PTP transmission mode;

[0277] The N bits of the multicast service neighboring cell information take a fourth combination value, indicating that the neighboring cells corresponding to the N bits do not support the multicast service through the PTM transmission mode and do not support the provision of the multicast service through the PTP transmission mode.

[0278] In one embodiment, the multicast service includes a multicast service carried out in the current cell and capable of being received by a user equipment UE in an RRC connected state.

[0279] In one embodiment, the indication information is carried by an RRC reconfiguration message.

[0280] The information sending device provided in the embodiments of the present application can be used to execute the information sending method provided in any of the above embodiments, and has corresponding functions and beneficial effects.

[0281] FIG4 is a schematic diagram of the structure of an information receiving device provided in an embodiment of the present application. The information receiving device provided in this embodiment includes:

[0282] An information receiving module 410 is configured to receive indication information indicating whether a neighboring cell supports providing a multicast service in a current cell via a point-to-point PTP transmission mode and / or a point-to-multipoint PTM transmission mode;

[0283] The service receiving module 420 is configured to receive the multicast service according to the indication information.

[0284] In one embodiment, the multicast service includes a multicast service carried out in the current cell and capable of being received by a UE in a radio resource control (RRC) inactive state.

[0285] In one embodiment, the indication information includes a neighboring cell list, where the neighboring cell list is used to indicate neighboring cells that support providing a multicast service in the current cell through a PTP transmission mode and / or a PTM transmission mode.

[0286] In one embodiment, the indication information is included in the MBS multicast configuration information;

[0287] The MBS multicast configuration information is carried by an RRC release message and / or an MBS multicast control channel message.

[0288] In one embodiment, the neighboring cell list includes one of the following:

[0289] Supports providing a list of neighboring cells for multicast services in the current cell via PTP transmission mode and / or PTM transmission mode;

[0290] Supports providing a list of neighboring cells for multicast services in the current cell through PTP and PTM transmission modes;

[0291] Supports providing a list of neighboring cells for multicast services in the current cell via PTP transmission;

[0292] Supports providing a list of neighboring cells for multicast services in the current cell through PTM transmission;

[0293] Supports providing a list of neighboring cells for multicast services in the current cell through PTP transmission and supports providing a list of neighboring cells for multicast services in the current cell through PTM transmission.

[0294] In one embodiment, the indication information includes multicast service neighboring cell information, and the multicast service neighboring cell information is used to indicate whether, for each multicast service performed in the current cell, the neighboring cells in the neighboring cell list support providing the multicast service through the PTP transmission mode and / or the PTM transmission mode.

[0295] In one embodiment, the multicast service neighboring cell information is included in the multicast service configuration information of the corresponding multicast service;

[0296] The multicast service configuration information is included in the MBS multicast configuration information;

[0297] The MBS multicast configuration information is carried by an RRC release message and / or an MBS multicast control channel message.

[0298] In one embodiment, the number of bits of the multicast service neighboring cell information is equal to the number of neighboring cells in the neighboring cell list.

[0299] In one embodiment, a single bit of the multicast service neighboring cell information has a first value, indicating that the neighboring cell corresponding to the bit supports providing the multicast service through the PTP transmission mode;

[0300] A single bit of the multicast service neighboring cell information takes a second value, indicating that the neighboring cell corresponding to the bit does not support provision of the multicast service through the PTP transmission mode.

[0301] In one embodiment, the number of bits of the multicast service neighboring cell information is N times the number of neighboring cells in the neighboring cell list, where N is an integer greater than 1;

[0302] Every N bits of the multicast service neighboring cell information corresponds to a neighboring cell in the neighboring cell list.

[0303] In one embodiment, in every N bits of the multicast service neighboring cell information, the first bit is used to indicate whether the neighboring cell supports providing the multicast service through the PTP transmission mode, and the second bit is used to indicate whether the neighboring cell supports providing the multicast service through the PTM transmission mode;

[0304] The first bit has a first value, indicating that the neighboring cell corresponding to the bit supports providing the multicast service through the PTP transmission mode;

[0305] The first bit takes the second value, indicating that the neighboring cell corresponding to the bit does not support providing the multicast service through the PTP transmission mode.

[0306] The second bit has a first value, indicating that the neighboring cell corresponding to the bit supports providing the multicast service through the PTM transmission mode;

[0307] The second bit takes a second value, indicating that the neighboring cell corresponding to the bit does not support providing the multicast service through the PTM transmission mode.

[0308] In one embodiment, the N bits of the multicast service neighboring cell information are set to a first combination value, indicating that the neighboring cell corresponding to the N bits supports providing the multicast service through a PTM transmission mode and supports providing the multicast service through a PTP transmission mode;

[0309] The N bits of the multicast service neighboring cell information are a second combination value, indicating that the neighboring cells corresponding to the N bits support providing the multicast service through the PTM transmission mode and do not support providing the multicast service through the PTP transmission mode;

[0310] The N bits of the multicast service neighboring cell information have a third combination value, indicating that the neighboring cell corresponding to the N bits does not support the multicast service through the PTM transmission mode but supports the provision of the multicast service through the PTP transmission mode;

[0311] The N bits of the multicast service neighboring cell information take a fourth combination value, indicating that the neighboring cells corresponding to the N bits do not support the multicast service through the PTM transmission mode and do not support the provision of the multicast service through the PTP transmission mode.

[0312] In one embodiment, the multicast service includes a multicast service carried out in the current cell and capable of being received by a user equipment UE in an RRC connected state.

[0313] In one embodiment, the indication information is carried by an RRC reconfiguration message.

[0314] The information receiving device provided in the embodiments of the present application can be used to execute the information receiving method provided in any of the above embodiments, and has corresponding functions and beneficial effects.

[0315] The present application also provides a network device, including 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 above-mentioned information sending method.

[0316] The present application also provides a user device, including 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 above-mentioned information receiving method.

[0317] The present application 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.

[0318] 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)).

[0319] 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.

[0320] The above are only preferred embodiments of the present application and do not limit the embodiments and protection scope of the present application. Those skilled in the art should be able to realize that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of this application should be included in the protection scope of this application.

Claims

1. A method for sending indication information, characterized in that, Including: Generate indication information for indicating whether an adjacent cell supports providing multicast services performed in a current cell through a point-to-point (PTP) transmission mode and / or a point-to-multipoint (PTM) transmission mode; Send the indication information to a user equipment.

2. The method according to claim 1, wherein The multicast service includes a multicast service performed in the current cell that can be received by a user equipment in a radio resource control (RRC) inactive state.

3. The method according to claim 1, wherein The indication information includes a list of adjacent cells for indicating adjacent cells that support providing the multicast services performed in the current cell through the PTP transmission mode and / or the PTM transmission mode.

4. The method according to claim 3, wherein The indication information is included in MBS multicast configuration information; The MBS multicast configuration information is carried by an RRC release message and / or an MBS multicast control channel message.

5. The method according to claim 3, characterized in that The list of adjacent cells includes one of the following: A list of adjacent cells that support providing the multicast services performed in the current cell through the PTP transmission mode and / or the PTM transmission mode; A list of adjacent cells that support providing the multicast services performed in the current cell through the PTP transmission mode and the PTM transmission mode; A list of adjacent cells that support providing the multicast services performed in the current cell through the PTP transmission mode; A list of adjacent cells that support providing the multicast services performed in the current cell through the PTM transmission mode; A list of adjacent cells that support providing the multicast services performed in the current cell through the PTP transmission mode and a list of adjacent cells that support providing the multicast services performed in the current cell through the PTM transmission mode.

6. The method according to claim 1, characterized in that The indication information includes multicast service adjacent cell information for indicating, for each multicast service performed in the current cell, whether the adjacent cells in the list of adjacent cells support providing the multicast service through the PTP transmission mode and / or the PTM transmission mode.

7. The method according to claim 6, wherein The multicast service adjacent cell information is included in the multicast service configuration information of the corresponding multicast service; The multicast service configuration information is included in the MBS multicast configuration information; The MBS multicast configuration information is carried by an RRC release message and / or an MBS multicast control channel message.

8. The method according to claim 6, wherein The number of bits of the multicast service adjacent cell information is equal to the number of adjacent cells in the list of adjacent cells.

9. The method according to claim 8, wherein A single bit value of the multicast service adjacent cell information is a first value, indicating that the adjacent cell corresponding to the bit supports providing the multicast service through the PTP transmission mode; A single bit value of the multicast service adjacent cell information is a second value, indicating that the adjacent cell corresponding to the bit does not support providing the multicast service through the PTP transmission mode.

10. The method according to claim 6, wherein The number of bits of the multicast service adjacent cell information is N times the number of adjacent cells in the list of adjacent cells, where N is an integer greater than 1; Every N bits of the multicast service adjacent cell information correspond to one adjacent cell in the list of adjacent cells.

11. The method according to claim 10, wherein Among every N bits of the multicast service adjacent cell information, the first bit is used to indicate whether the adjacent cell supports providing the multicast service through the PTP transmission mode, and the second bit is used to indicate whether the adjacent cell supports providing the multicast service through the PTM transmission mode; When the first bit takes a first value, it indicates that the adjacent cell corresponding to the bit supports providing the multicast service through the PTP transmission mode; When the first bit takes a second value, it indicates that the adjacent cell corresponding to the bit does not support providing the multicast service through the PTP transmission mode; When the second bit takes a first value, it indicates that the adjacent cell corresponding to the bit supports providing the multicast service through the PTM transmission mode; When the second bit takes a second value, it indicates that the adjacent cell corresponding to the bit does not support providing the multicast service through the PTM transmission mode.

12. The method according to claim 10, wherein When the N bits of the multicast service adjacent cell information take a first combined value, it indicates that the adjacent cells corresponding to the N bits support providing the multicast service through the PTM transmission mode and support providing the multicast service through the PTP transmission mode; When the N bits of the multicast service adjacent cell information take a second combined value, it indicates that the adjacent cells corresponding to the N bits support providing the multicast service through the PTM transmission mode and do not support providing the multicast service through the PTP transmission mode; When the N bits of the multicast service adjacent cell information take a third combined value, it indicates that the adjacent cells corresponding to the N bits do not support providing the multicast service through the PTM transmission mode and support providing the multicast service through the PTP transmission mode; When the N bits of the multicast service adjacent cell information take a fourth combined value, it indicates that the adjacent cells corresponding to the N bits do not support providing the multicast service through the PTM transmission mode and do not support providing the multicast service through the PTP transmission mode.

13. The method according to claim 1, characterized in that, The multicast service includes the multicast services that can be received by user equipment in the RRC connected state in the current cell.

14. The method according to claim 1 or 13, characterized in that, The indication information is carried by an RRC reconfiguration message.

15. A method for receiving indication information, characterized in that, It includes: Receiving indication information, where the indication information is used to indicate whether an adjacent cell supports providing the multicast service carried out in the current cell through the point-to-point PTP transmission mode and / or the point-to-multipoint PTM transmission mode; Receiving the multicast service according to the indication information.

16. The method according to claim 15, characterized in that, The multicast service includes the multicast services that can be received by user equipment in the RRC inactive state in the current cell.

17. The method according to claim 15, wherein The indication information includes a list of adjacent cells, and the list of adjacent cells is used to indicate the adjacent cells that support providing the multicast service carried out in the current cell through the PTP transmission mode and / or the PTM transmission mode.

18. The method according to claim 17, wherein The indication information is included in the MBS multicast configuration information; The MBS multicast configuration information is carried by an RRC release message and / or an MBS multicast control channel message.

19. The method according to claim 17, characterized in that, The list of adjacent cells includes one of the following: A list of adjacent cells that support providing the multicast service carried out in the current cell through the PTP transmission mode and / or the PTM transmission mode; Support a list of neighboring cells for the multicast service being performed in the current cell provided via the PTP transmission mode and the PTM transmission mode; Support a list of neighboring cells for the multicast service being performed in the current cell provided via the PTP transmission mode; Support a list of neighboring cells for the multicast service being performed in the current cell provided via the PTM transmission mode; Support a list of neighboring cells for the multicast service being performed in the current cell provided via the PTP transmission mode and support a list of neighboring cells for the multicast service being performed in the current cell provided via the PTM transmission mode.

20. The method according to claim 15, wherein The indication information includes multicast service neighboring cell information, and the multicast service neighboring cell information is used to indicate whether the neighboring cells in the neighboring cell list support providing the multicast service via the PTP transmission mode and / or the PTM transmission mode for each multicast service being performed in the current cell.

21. The method according to claim 20, wherein, The multicast service neighboring cell information is included in the multicast service configuration information of the corresponding multicast service; The multicast service configuration information is included in the MBS multicast configuration information; The MBS multicast configuration information is carried by an RRC release message and / or an MBS multicast control channel message.

22. The method according to claim 20, wherein The number of bits of the multicast service neighboring cell information is equal to the number of neighboring cells in the neighboring cell list.

23. The method according to claim 22, characterized in that, The single-bit value of the multicast service neighboring cell information is a first value, indicating that the neighboring cell corresponding to the bit supports providing the multicast service via the PTP transmission mode; The single-bit value of the multicast service neighboring cell information is a second value, indicating that the neighboring cell corresponding to the bit does not support providing the multicast service via the PTP transmission mode.

24. The method according to claim 20, characterized in that The number of bits of the multicast service neighboring cell information is N times the number of neighboring cells in the neighboring cell list, where N is an integer greater than 1; Every N bits of the multicast service neighboring cell information correspond to one neighboring cell in the neighboring cell list.

25. The method according to claim 24, wherein Among every N bits of the multicast service neighboring cell information, the first bit is used to indicate whether the neighboring cell supports providing the multicast service via the PTP transmission mode, and the second bit is used to indicate whether the neighboring cell supports providing the multicast service via the PTM transmission mode; The first bit takes a first value, indicating that the neighboring cell corresponding to the bit supports providing the multicast service via the PTP transmission mode; The first bit takes a second value, indicating that the neighboring cell corresponding to the bit does not support providing the multicast service via the PTP transmission mode; The second bit takes a first value, indicating that the neighboring cell corresponding to the bit supports providing the multicast service via the PTM transmission mode; The second bit takes a second value, indicating that the neighboring cell corresponding to the bit does not support providing the multicast service via the PTM transmission mode.

26. The method according to claim 24, wherein, The N-bit value of the multicast service adjacent cell information takes a first combined value, indicating that the adjacent cell corresponding to the N bits supports providing the multicast service through the PTM transmission mode and also supports providing the multicast service through the PTP transmission mode; The N-bit value of the multicast service adjacent cell information takes a second combined value, indicating that the adjacent cell corresponding to the N bits supports providing the multicast service through the PTM transmission mode and does not support providing the multicast service through the PTP transmission mode; The N-bit value of the multicast service adjacent cell information takes a third combined value, indicating that the adjacent cell corresponding to the N bits does not support providing the multicast service through the PTM transmission mode and supports providing the multicast service through the PTP transmission mode; The N-bit value of the multicast service adjacent cell information takes a fourth combined value, indicating that the adjacent cell corresponding to the N bits does not support providing the multicast service through the PTM transmission mode and does not support providing the multicast service through the PTP transmission mode.

27. The method according to claim 15, wherein The multicast service includes the multicast service that can be received by the user equipment in the RRC connected state in the current cell.

28. The method according to claim 15 or 27, characterized in that, The indication information is carried by the RRC reconfiguration message.

29. An indication information sending device, characterized in that, Comprising: A generating module, configured to generate indication information for indicating whether an adjacent cell supports providing the multicast service conducted in the current cell through the point-to-point (PTP) transmission mode and / or the point-to-multipoint (PTM) transmission mode; An information sending module, configured to send the indication information to a user equipment.

30. An indication information receiving device, characterized in that, Comprising: An information receiving module, configured to receive indication information for indicating whether an adjacent cell supports providing the multicast service conducted in the current cell through the point-to-point (PTP) transmission mode and / or the point-to-multipoint (PTM) transmission mode; A receiving module, configured to receive the multicast service according to the indication information.

31. A network device, comprising a processor and a memory, the memory is configured to store a computer program, and when the computer program is executed by the processor, the processor implements the information sending method according to any one of claims 1-14.

32. A user equipment, comprising a processor and a memory, the memory is configured to store a computer program, and when the computer program is executed by the processor, the processor implements the information receiving method according to any one of claims 15-28.

33. A computer-readable storage medium, comprising a computer program, and when the computer program is executed by a processor, the processor implements the method according to any one of claims 1-28.

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