WO2021249383A1

WO2021249383A1 - Multicast and broadcast services service switching method and device

Info

Publication number: WO2021249383A1
Application number: PCT/CN2021/098868
Authority: WO
Inventors: 谢芳; 李男
Original assignee: China Mobile Communications Group Co Ltd; Research Institute of China Mobile Communication Co Ltd
Current assignee: China Mobile Communications Group Co Ltd; Research Institute of China Mobile Communication Co Ltd
Priority date: 2020-06-10
Filing date: 2021-06-08
Publication date: 2021-12-16
Anticipated expiration: 2022-12-10
Also published as: CN113784399B; CN113784399A

Abstract

A multicast and broadcast services (MBS) service switching method and device. The method comprises: a source base station obtains support information of at least one candidate target base station for a first MBS service, the first MBS service being an MBS service being performed or interested by a terminal to be switched; and the source base station selects a target base station switched by the terminal to be switched.

Description

Method and equipment for switching multicast broadcast service business

相关申请的交叉引用Cross-references to related applications

本申请主张在2020年6月10日在中国提交的中国专利申请号No.202010523230.1的优先权，其全部内容通过引用包含于此。This application claims the priority of Chinese Patent Application No. 202010523230.1 filed in China on June 10, 2020, the entire content of which is incorporated herein by reference.

Technical field

本公开涉及移动通信技术领域，具体涉及一种多播广播服务(Multicast and Broadcast Services，MBS)业务的切换方法及设备。The present disclosure relates to the field of mobile communication technology, and in particular to a method and equipment for switching multicast services (Multicast and Broadcast Services, MBS) services.

Background technique

MBS是一种从一个数据源向多个目标终端传输数据的技术，实现了网络(包括核心网和接入网)资源的共享，提高了网络资源、尤其是空口资源利用率。第五代移动通信技术(5G)可能支持图1和图2两种潜在的MBS架构。MBS is a technology that transmits data from one data source to multiple target terminals, which realizes the sharing of network (including core network and access network) resources, and improves the utilization of network resources, especially air interface resources. The fifth-generation mobile communication technology (5G) may support the two potential MBS architectures shown in Figure 1 and Figure 2.

其中图1所示的架构1尽量重用相关的5G系统网元，而图2所示的架构2则是为MBS业务引入了会话管理功能(MB-Session Management Function，MB-SMF)和用户面功能(MB-User Plane Function，MB-UPF)等专用网元。其中SMF或MB-SMF负责MBS的会话(session)管理，包括session的建立、修改等，接入和移动管理功能(Access and Mobility Management Function，AMF)或MB-AMF负责对UE的接纳控制，UPF或MB-UPF负责MBS数据包的过滤与发送。基站根据小区内接收MBS业务的UE数量等信息判断采用点到点(point-to-point,PTP)还是点到多点(point-to-multipoint,PTM)的方式在空口发送MBS的数据包。Among them, the architecture 1 shown in Figure 1 reuses related 5G system network elements as much as possible, while the architecture 2 shown in Figure 2 introduces the session management function (MB-Session Management Function, MB-SMF) and user plane functions for the MBS service. (MB-User Plane Function, MB-UPF) and other dedicated network elements. Among them, SMF or MB-SMF is responsible for MBS session (session) management, including session establishment, modification, etc., access and mobility management function (Access and Mobility Management Function, AMF) or MB-AMF is responsible for UE admission control, UPF Or MB-UPF is responsible for the filtering and sending of MBS data packets. The base station judges whether to use point-to-point (PTP) or point-to-multipoint (PTM) to send MBS data packets on the air interface according to information such as the number of UEs receiving MBS services in the cell.

在移动通信场景中，正在进行MBS业务的终端移动可能因为移动或网络质量等原因触发切换，而切换后的目标基站可能并不支持终端当前的MBS业务，导致切换后MBS业务发生中断，从而降低了用户对网络和业务的使用体验。In the mobile communication scenario, the mobile terminal of the MBS service may trigger handover due to reasons such as movement or network quality, and the target base station after the handover may not support the current MBS service of the terminal, resulting in interruption of the MBS service after the handover, thereby reducing This improves the user’s experience of using the network and services.

发明内容Summary of the invention

本公开的至少一个实施例提供了一种多播广播服务业务的切换方法、终端及网络设备，能够在切换过程中优先选择支持终端的MBS业务的目标基站，改善业务的连续性和可靠性。At least one embodiment of the present disclosure provides a method, terminal, and network device for switching multicast broadcast service services, which can preferentially select target base stations supporting the MBS service of the terminal during the switching process, thereby improving service continuity and reliability.

根据本公开的一个方面，至少一个实施例提供了一种多播广播服务MBS业务的切换方法，包括：According to an aspect of the present disclosure, at least one embodiment provides a method for switching MBS services of a multicast broadcast service, including:

源基站获取至少一个候选目标基站对第一MBS业务的支持信息，所述第一MBS业务为待切换终端正在进行的或感兴趣的MBS业务；The source base station obtains support information of at least one candidate target base station for the first MBS service, where the first MBS service is an ongoing or interesting MBS service of the terminal to be handed over;

所述源基站选择所述待切换终端切换的目标基站；Selecting, by the source base station, a target base station to be handed over by the terminal to be handed over;

其中，所述对所述第一MBS业务的支持信息包括以下信息中的至少一种：Wherein, the support information for the first MBS service includes at least one of the following information:

候选目标基站或候选目标小区是否能够发送或提供所述第一MBS业务；Whether the candidate target base station or candidate target cell can transmit or provide the first MBS service;

候选目标基站或候选目标小区是否与核心网建立了所述第一MBS业务的隧道、会话或服务质量流(quality of service flow，QoS flow)；Whether the candidate target base station or candidate target cell has established a tunnel, session, or QoS flow (quality of service flow, QoS flow) of the first MBS service with the core network;

在候选目标基站或候选目标小区尚未与核心网建立所述第一MBS业务的隧道、会话或QoS flow的情况下，所述候选目标基站或候选目标小区是否可以为所述待切换终端建立所述第一MBS业务的隧道、会话或QoS flow；In the case that the candidate target base station or candidate target cell has not yet established the tunnel, session or QoS flow of the first MBS service with the core network, whether the candidate target base station or candidate target cell can establish the Tunnel, session or QoS flow of the first MBS service;

候选目标基站或候选目标小区当前发送所述第一MBS业务的传输方式以及与所述传输方式相关的发送参数，所述传输方式为点到多点PTM和/或点到点PTP；The current transmission mode of the candidate target base station or candidate target cell for sending the first MBS service and the transmission parameters related to the transmission mode, where the transmission mode is point-to-multipoint PTM and/or point-to-point PTP;

候选目标基站或候选目标小区向所述待切换终端发送所述第一MBS业务时采用的传输方式。The transmission mode used when the candidate target base station or candidate target cell sends the first MBS service to the terminal to be handed over.

此外，根据本公开的至少一个实施例，在获取至少一个候选目标基站对第一MBS业务的支持信息之前，所述方法还包括：In addition, according to at least one embodiment of the present disclosure, before obtaining support information of at least one candidate target base station for the first MBS service, the method further includes:

源基站接收待切换终端发送的所述第一MBS业务的业务属性信息。The source base station receives the service attribute information of the first MBS service sent by the terminal to be handed over.

此外，根据本公开的至少一个实施例，所述业务属性信息包括以下信息中的至少一种：临时移动组标识TMGI、多播组标识、多播地址、多播会话上下文标识、多播QoS流标识。In addition, according to at least one embodiment of the present disclosure, the service attribute information includes at least one of the following information: temporary mobility group identifier TMGI, multicast group identifier, multicast address, multicast session context identifier, and multicast QoS flow Logo.

此外，根据本公开的至少一个实施例，在选择所述待切换终端切换的目标基站的步骤之前，所述方法还包括：In addition, according to at least one embodiment of the present disclosure, before the step of selecting the target base station to be handed over by the terminal to be handed over, the method further includes:

所述源基站还向所述候选目标基站发送用于请求建立所述第一MBS业务的隧道或会话或QoS flow的请求消息。The source base station also sends to the candidate target base station a request message for requesting to establish a tunnel or session or QoS flow of the first MBS service.

此外，根据本公开的至少一个实施例，所述源基站选择所述待切换终端切换的目标基站的步骤，包括：In addition, according to at least one embodiment of the present disclosure, the step of the source base station selecting the target base station to be handed over by the terminal to be handed over includes:

所述源基站根据所述至少一个候选目标基站对所述第一MBS业务的支持信息，选择所述待切换终端切换的目标基站。The source base station selects the target base station for the handover of the terminal to be handed over according to the support information of the at least one candidate target base station for the first MBS service.

此外，根据本公开的至少一个实施例，所述对所述第一MBS业务的支持信息包括以下信息中的至少一种：In addition, according to at least one embodiment of the present disclosure, the support information for the first MBS service includes at least one of the following information:

候选目标基站或候选目标小区是否与核心网建立了所述第一MBS业务的隧道、会话或QoS flow；Whether the candidate target base station or candidate target cell has established a tunnel, session or QoS flow of the first MBS service with the core network;

此外，根据本公开的至少一个实施例，所述选择所述待切换终端切换的目标基站的步骤，包括：In addition, according to at least one embodiment of the present disclosure, the step of selecting the target base station to be handed over by the terminal to be handed over includes:

所述源基站根据所述至少一个候选目标基站对所述第一MBS业务的支持信息，所述待切换终端的测量报告以及接收所述第一MBS业务的偏好信息，选择所述待切换终端切换的目标基站，其中，所述偏好信息包括所述第一MBS业务的期望传输方式，所述期望传输方式是针对所述待切换终端、或针对每个MBS业务或针对每个带宽部分BWP或针对每个同步信号块SSB而设置的。The source base station selects the terminal to be handed over according to the support information of the at least one candidate target base station for the first MBS service, the measurement report of the terminal to be handed over, and the preference information for receiving the first MBS service , Wherein the preference information includes an expected transmission mode of the first MBS service, and the expected transmission mode is for the terminal to be handed over, or for each MBS service or for each bandwidth part BWP or for It is set for each sync signal block SSB.

此外，根据本公开的至少一个实施例，根据所述至少一个候选目标基站对所述第一MBS业务的支持信息，所述待切换终端的测量报告以及接收所述第一MBS业务的偏好信息，选择所述待切换终端切换的目标基站的步骤，包括：In addition, according to at least one embodiment of the present disclosure, according to the support information of the at least one candidate target base station for the first MBS service, the measurement report of the terminal to be handed over and the preference information for receiving the first MBS service, The step of selecting the target base station to be handed over by the terminal to be handed over includes:

根据所述待切换终端的测量报告，从所述至少一个候选目标基站或小区中筛选出信号质量满足预设条件的第一类基站或小区；According to the measurement report of the terminal to be handed over, select the first-type base station or cell whose signal quality meets a preset condition from the at least one candidate target base station or cell;

从所述第一类基站或小区中筛选出能够发送或提供所述第一MBS业务的第二类基站或小区；Screening out the second-type base stations or cells that can transmit or provide the first MBS service from the first-type base stations or cells;

从所述第二类基站或小区中筛选出为所述待切换终端发送所述第一MBS业务时采用的传输方式与所述偏好信息相匹配的基站或小区，作为所述目标基站或小区。From the second type of base stations or cells, a base station or cell whose transmission mode used when sending the first MBS service for the terminal to be handed over matches the preference information is selected as the target base station or cell.

此外，根据本公开的至少一个实施例，在选择所述待切换终端切换的目标基站之前，所述方法还包括：In addition, according to at least one embodiment of the present disclosure, before selecting the target base station to be handed over by the terminal to be handed over, the method further includes:

源基站接收所述待切换终端发送的接收所述第一MBS业务的偏好信息。The source base station receives the preference information for receiving the first MBS service sent by the terminal to be handed over.

此外，根据本公开的至少一个实施例，在选择所述待切换终端切换的目标基站的步骤之后，所述方法还包括：In addition, according to at least one embodiment of the present disclosure, after the step of selecting the target base station to be handed over by the terminal to be handed over, the method further includes:

在所述目标基站或目标小区尚未与核心网建立所述第一MBS业务的隧道或会话或QoS flow的情况下，向所述目标基站发送用于建立所述第一MBS业务的隧道或会话或QoS flow的通知消息。When the target base station or target cell has not yet established the tunnel or session or QoS flow of the first MBS service with the core network, send the tunnel or session or session for establishing the first MBS service to the target base station. QoS flow notification message.

此外，根据本公开的至少一个实施例，所述源基站获取至少一个候选目标基站对所述第一MBS业务的支持信息的步骤，包括：In addition, according to at least one embodiment of the present disclosure, the step for the source base station to obtain support information of at least one candidate target base station for the first MBS service includes:

所述源基站向候选目标基站发送第一MBS业务的业务属性信息，以及，接收所述候选目标基站反馈的对所述第一MBS业务的支持信息；或者，The source base station sends service attribute information of the first MBS service to the candidate target base station, and receives support information for the first MBS service fed back by the candidate target base station; or,

所述源基站从预先获取的所述候选目标基站对MBS业务的支持信息，确定所述候选目标基站对所述第一MBS业务的支持信息，其中，所述候选目标基站对MBS业务的支持信息是在建立网络设备间接口或者在网络设备配置更新时交互得到的。The source base station determines the support information of the candidate target base station for the first MBS service from the pre-acquired support information of the candidate target base station for the MBS service, wherein the support information of the candidate target base station for the MBS service It is obtained through interaction when the interface between network devices is established or when the configuration of the network device is updated.

根据本公开的另一方面，至少一个实施例提供了一种MBS业务的切换方法，包括：According to another aspect of the present disclosure, at least one embodiment provides an MBS service handover method, including:

候选目标基站向源基站发送对第一MBS业务的支持信息，所述第一MBS 业务为待切换终端正在进行的或感兴趣的MBS业务；The candidate target base station sends support information for the first MBS service to the source base station, where the first MBS service is an ongoing or interesting MBS service for the terminal to be handed over;

此外，根据本公开的至少一个实施例，所述向源基站发送对第一MBS业务的支持信息的步骤，包括：In addition, according to at least one embodiment of the present disclosure, the step of sending support information for the first MBS service to the source base station includes:

候选目标基站在接收到源基站发送的第一MBS业务的业务属性信息后，向源基站发送对第一MBS业务的支持信息；或者，After receiving the service attribute information of the first MBS service sent by the source base station, the candidate target base station sends support information for the first MBS service to the source base station; or,

候选目标基站在建立网络设备间接口或者在网络设备配置更新时，将自身对MBS业务的支持信息发送给源基站。The candidate target base station sends its own support information for the MBS service to the source base station when establishing an interface between network devices or when the network device configuration is updated.

此外，根据本公开的至少一个实施例，所述方法还包括：In addition, according to at least one embodiment of the present disclosure, the method further includes:

候选目标基站接收所述源基站发送的用于请求建立所述第一MBS业务的隧道或会话或QoS flow的请求消息；The candidate target base station receives a request message sent by the source base station for requesting to establish a tunnel or session or QoS flow of the first MBS service;

候选目标基站根据所述请求消息，与核心网之间建立所述第一MBS业务的隧道或会话或QoS flow。The candidate target base station establishes a tunnel or session or QoS flow of the first MBS service with the core network according to the request message.

候选目标基站或候选目标小区是否与核心网建立了所述第一MBS业务的隧道或会话或QoS flow；Whether the candidate target base station or candidate target cell has established a tunnel or session or QoS flow of the first MBS service with the core network;

在候选目标基站或候选目标小区尚未与核心网建立所述第一MBS业务的隧道或会话或QoS flow的情况下，所述候选目标基站或候选目标小区是否可以为所述待切换终端建立所述第一MBS业务的隧道或会话或QoS flow；In the case that the candidate target base station or candidate target cell has not yet established the first MBS service tunnel or session or QoS flow with the core network, whether the candidate target base station or candidate target cell can establish the Tunnel or session or QoS flow of the first MBS service;

候选目标基站或候选目标小区当前发送所述第一MBS业务的传输方式以及与所述传输方式相关的发送参数，所述传输方式包括点到多点PTM和/或点到点PTP；The current transmission mode of the candidate target base station or candidate target cell for sending the first MBS service and the transmission parameters related to the transmission mode, the transmission mode including point-to-multipoint PTM and/or point-to-point PTP;

终端向源基站发送接收第一MBS业务的偏好信息；The terminal sends and receives preference information of the first MBS service to the source base station;

其中，所述第一MBS业务为待切换终端正在进行的或感兴趣的MBS业务，所述偏好信息包括所述第一MBS业务的期望传输方式，所述期望传输方式包括点到多点PTM和/或点到点PTP。Wherein, the first MBS service is the MBS service being or interested in the terminal to be handed over, the preference information includes the desired transmission mode of the first MBS service, and the desired transmission mode includes point-to-multipoint PTM and / Or point-to-point PTP.

所述终端向所述源基站发送第一MBS业务的业务属性信息。The terminal sends the service attribute information of the first MBS service to the source base station.

根据本公开的另一方面，至少一个实施例提供了一种源基站，包括：According to another aspect of the present disclosure, at least one embodiment provides a source base station, including:

支持信息获取模块，用于获取至少一个候选目标基站对第一MBS业务的支持信息，所述第一MBS业务为待切换终端正在进行的或感兴趣的MBS业务；A support information acquisition module, configured to acquire support information of at least one candidate target base station for a first MBS service, where the first MBS service is an ongoing or interested MBS service of the terminal to be handed over;

目标基站选择模块，用于选择所述待切换终端切换的目标基站；The target base station selection module is used to select the target base station to be handed over by the terminal to be handed over;

此外，根据本公开的至少一个实施例，所述源基站还包括：In addition, according to at least one embodiment of the present disclosure, the source base station further includes:

业务信息获取模块，用于在获取至少一个候选目标基站对第一MBS业务的支持信息之前，接收待切换终端发送的所述第一MBS业务的业务属性信息。The service information obtaining module is configured to receive the service attribute information of the first MBS service sent by the terminal to be handed over before obtaining the support information of the at least one candidate target base station for the first MBS service.

业务请求模块，用于在选择所述待切换终端切换的目标基站之前，还向所述候选目标基站发送用于请求建立所述第一MBS业务的隧道或会话或QoS flow的请求消息。The service request module is configured to send a request message for requesting the establishment of a tunnel or session or QoS flow of the first MBS service to the candidate target base station before selecting the target base station to be switched by the terminal to be handed over.

此外，根据本公开的至少一个实施例，所述目标基站选择模块，还用于根据所述至少一个候选目标基站对所述第一MBS业务的支持信息，选择所述待切换终端切换的目标基站。In addition, according to at least one embodiment of the present disclosure, the target base station selection module is further configured to select the target base station for the handover of the terminal to be handed over according to the support information of the at least one candidate target base station for the first MBS service .

此外，根据本公开的至少一个实施例，所述目标基站选择模块，还用于根据所述至少一个候选目标基站对所述第一MBS业务的支持信息，所述待切换终端的测量报告以及接收所述第一MBS业务的偏好信息，选择所述待切换终端切换的目标基站，其中，所述偏好信息包括所述第一MBS业务的期望传输方式，所述期望传输方式是针对所述待切换终端、或针对每个MBS业务或针对每个带宽部分BWP或针对每个同步信号块SSB而设置的。In addition, according to at least one embodiment of the present disclosure, the target base station selection module is further configured to, according to the support information of the at least one candidate target base station for the first MBS service, the measurement report of the terminal to be handed over and receiving The preference information of the first MBS service selects the target base station for the handover of the terminal to be handed over, wherein the preference information includes the desired transmission mode of the first MBS service, and the desired transmission mode is specific to the to-be handover The terminal is set for each MBS service or for each bandwidth part BWP or for each synchronization signal block SSB.

此外，根据本公开的至少一个实施例，所述目标基站选择模块，还用于根据所述待切换终端的测量报告，从所述至少一个候选目标基站或小区中筛选出信号质量满足预设条件的第一类基站或小区；从所述第一类基站或小区中筛选出能够发送或提供所述第一MBS业务的第二类基站或小区；从所述第二类基站或小区中筛选出为所述待切换终端发送所述第一MBS业务时采用的传输方式与所述偏好信息相匹配的基站或小区，作为所述目标基站或小区。In addition, according to at least one embodiment of the present disclosure, the target base station selection module is further configured to screen out the at least one candidate target base station or cell from the at least one candidate target base station or cell according to the measurement report of the terminal to be handed over to satisfy a preset condition The first type of base station or cell; the second type of base station or cell that can transmit or provide the first MBS service is selected from the first type of base station or cell; the second type of base station or cell is selected from the second type of base station or cell The base station or cell whose transmission mode used when sending the first MBS service by the terminal to be handed over matches the preference information is used as the target base station or cell.

偏好信息获取模块，用于接收所述待切换终端发送的接收所述第一MBS业务的偏好信息。The preference information obtaining module is configured to receive preference information for receiving the first MBS service sent by the terminal to be switched.

通知模块，用于在选择所述待切换终端切换的目标基站之后，在所述目标基站或目标小区尚未与核心网建立所述第一MBS业务的隧道或会话或QoS flow的情况下，向所述目标基站发送用于建立所述第一MBS业务的隧道或会话或QoS flow的通知消息。The notification module is configured to, after selecting the target base station to be handed over by the terminal to be handed over, when the target base station or target cell has not yet established the first MBS service tunnel or session or QoS flow with the core network, to The target base station sends a notification message for establishing a tunnel or session or QoS flow of the first MBS service.

此外，根据本公开的至少一个实施例，所述支持信息获取模块，还用于：In addition, according to at least one embodiment of the present disclosure, the support information acquisition module is further configured to:

向候选目标基站发送第一MBS业务的业务属性信息，以及，接收所述候选目标基站反馈的对所述第一MBS业务的支持信息；或者，Sending service attribute information of the first MBS service to the candidate target base station, and receiving support information for the first MBS service fed back by the candidate target base station; or,

从预先获取的所述候选目标基站对MBS业务的支持信息，确定所述候选目标基站对所述第一MBS业务的支持信息，其中，所述候选目标基站对MBS业务的支持信息是在建立网络设备间接口或者在网络设备配置更新时交互得到的。From the pre-acquired support information of the candidate target base station for the MBS service, determine the support information of the candidate target base station for the first MBS service, wherein the support information of the candidate target base station for the MBS service is in establishing a network Interface between devices or through interaction when network device configuration is updated.

根据本公开的另一方面，至少一个实施例提供了源基站，包括收发机和处理器，其中，According to another aspect of the present disclosure, at least one embodiment provides a source base station, including a transceiver and a processor, wherein

所述收发机，用于获取至少一个候选目标基站对第一MBS业务的支持信息，所述第一MBS业务为待切换终端正在进行的或感兴趣的MBS业务；The transceiver is configured to obtain support information of at least one candidate target base station for a first MBS service, where the first MBS service is an ongoing or interested MBS service of the terminal to be handed over;

所述处理器，用于选择所述待切换终端切换的目标基站；The processor is configured to select a target base station to be handed over by the terminal to be handed over;

根据本公开的另一方面，至少一个实施例提供了一种源基站，包括：处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现如上所述的多播广播服务业务的切换方法的步骤。According to another aspect of the present disclosure, at least one embodiment provides a source base station, including: a processor, a memory, and a program stored on the memory and capable of running on the processor, and the program is When the processor executes, the steps of the method for switching the multicast broadcast service as described above are realized.

根据本公开的另一方面，至少一个实施例提供了一种候选目标基站，包括：According to another aspect of the present disclosure, at least one embodiment provides a candidate target base station, including:

支持信息发送模块，用于向源基站发送对第一MBS业务的支持信息，所述第一MBS业务为待切换终端正在进行的或感兴趣的MBS业务；A support information sending module, configured to send support information for the first MBS service to the source base station, where the first MBS service is an ongoing or interesting MBS service for the terminal to be handed over;

此外，根据本公开的至少一个实施例，所述支持信息发送模块，还用于：In addition, according to at least one embodiment of the present disclosure, the support information sending module is further configured to:

在接收到源基站发送的第一MBS业务的业务属性信息后，向源基站发送对第一MBS业务的支持信息；或者，After receiving the service attribute information of the first MBS service sent by the source base station, send support information for the first MBS service to the source base station; or,

在建立网络设备间接口或者在网络设备配置更新时，将所述候选目标基站对MBS业务的支持信息发送给源基站。When an interface between network devices is established or when the network device configuration is updated, the MBS service support information of the candidate target base station is sent to the source base station.

此外，根据本公开的至少一个实施例，所述候选目标基站还包括：In addition, according to at least one embodiment of the present disclosure, the candidate target base station further includes:

业务建立模块，用于接收所述源基站发送的用于请求建立所述第一MBS业务的隧道或会话或QoS flow的请求消息；根据所述请求消息，与核心网之间建立所述第一MBS业务的隧道或会话或QoS flow。The service establishment module is configured to receive a request message sent by the source base station for requesting the establishment of a tunnel or session or QoS flow of the first MBS service; according to the request message, establish the first communication with the core network MBS service tunnel or session or QoS flow.

根据本公开的另一方面，至少一个实施例提供了一种候选目标基站，包括收发机和处理器，其中，According to another aspect of the present disclosure, at least one embodiment provides a candidate target base station, including a transceiver and a processor, wherein,

所述收发机，用于向源基站发送对第一MBS业务的支持信息，所述第一MBS业务为待切换终端正在进行的或感兴趣的MBS业务；The transceiver is configured to send support information for a first MBS service to a source base station, where the first MBS service is an ongoing or interesting MBS service of the terminal to be handed over;

根据本公开的另一方面，至少一个实施例提供了一种候选目标基站，包括：处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现如上所述的多播广播服务业务的切换方法的步骤。According to another aspect of the present disclosure, at least one embodiment provides a candidate target base station, including: a processor, a memory, and a program that is stored on the memory and can run on the processor, and the program is When the processor is executed, the steps of the method for switching the multicast broadcast service as described above are realized.

根据本公开的另一方面，至少一个实施例提供了一种终端，包括：According to another aspect of the present disclosure, at least one embodiment provides a terminal, including:

偏好信息发送模块，用于向源基站发送接收第一MBS业务的偏好信息；A preference information sending module, configured to send and receive preference information of the first MBS service to the source base station;

此外，根据本公开的至少一个实施例，所述终端还包括：In addition, according to at least one embodiment of the present disclosure, the terminal further includes:

业务信息发送模块，用于向源基站发送第一MBS业务的业务属性信息，所述第一MBS业务为待切换终端正在进行的或感兴趣的MBS业务。The service information sending module is configured to send service attribute information of the first MBS service to the source base station, where the first MBS service is an ongoing or interesting MBS service of the terminal to be handed over.

根据本公开的另一方面，至少一个实施例提供了一种终端，包括收发机和处理器，其中，According to another aspect of the present disclosure, at least one embodiment provides a terminal including a transceiver and a processor, wherein

所述收发机，用于向源基站发送接收第一MBS业务的偏好信息；The transceiver is configured to send preference information for receiving the first MBS service to the source base station;

根据本公开的另一方面，至少一个实施例提供了一种终端，包括：处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现如上所述的多播广播服务业务的切换方法的步骤。According to another aspect of the present disclosure, at least one embodiment provides a terminal including: a processor, a memory, and a program stored on the memory and running on the processor, the program being processed by the When the device is executed, the steps of the method for switching the multicast broadcast service as described above are implemented.

根据本公开的另一个方面，至少一个实施例提供了一种多播广播服务MBS业务的切换方法，包括：According to another aspect of the present disclosure, at least one embodiment provides a method for switching MBS services of a multicast broadcast service, including:

第一网络设备在建立网络设备间接口或者在网络设备配置更新时，获取第二网络设备对MBS业务的支持信息。The first network device obtains the MBS service support information of the second network device when establishing an interface between the network devices or when the network device configuration is updated.

第二网络设备在建立与第一网络设备之间的接口或者在网络设备配置更新时，将所述第二网络设备对MBS业务的支持信息发送给所述第一网络设备。When the second network device establishes an interface with the first network device or when the network device configuration is updated, the second network device sends the MBS service support information of the second network device to the first network device.

根据本公开的另一个方面，至少一个实施例提供了一种第一网络设备，包括：According to another aspect of the present disclosure, at least one embodiment provides a first network device, including:

支持信息获取模块，用于在建立网络设备间接口或者在网络设备配置更新时，获取第二网络设备对MBS业务的支持信息。The support information acquisition module is used to acquire the support information of the second network device for the MBS service when the interface between the network devices is established or when the network device configuration is updated.

根据本公开的另一个方面，至少一个实施例提供了一种第二网络设备，包括：According to another aspect of the present disclosure, at least one embodiment provides a second network device, including:

支持信息发送模块，用于建立与第一网络设备之间的接口或者在网络设备配置更新时，将所述第二网络设备对MBS业务的支持信息发送给所述第一网络设备。The support information sending module is configured to establish an interface with the first network device or send the MBS service support information of the second network device to the first network device when the network device configuration is updated.

根据本公开的另一个方面，至少一个实施例提供了一种第一网络设备，包括收发机和处理器，其中，According to another aspect of the present disclosure, at least one embodiment provides a first network device including a transceiver and a processor, wherein,

所述收发机，用于在建立网络设备间接口或者在网络设备配置更新时，获取第二网络设备对MBS业务的支持信息。The transceiver is used to obtain the MBS service support information of the second network device when the interface between the network devices is established or when the network device configuration is updated.

根据本公开的另一个方面，至少一个实施例提供了一种第二网络设备，包括收发机和处理器，其中：According to another aspect of the present disclosure, at least one embodiment provides a second network device including a transceiver and a processor, wherein:

所述收发机，用于在建立与第一网络设备之间的接口或者在网络设备配置更新时，将所述第二网络设备对MBS业务的支持信息发送给所述第一网络设备。The transceiver is configured to send the MBS service support information of the second network device to the first network device when the interface with the first network device is established or when the network device configuration is updated.

根据本公开的另一方面，至少一个实施例提供了一种计算机可读存储介质，所述计算机可读存储介质上存储有程序，所述程序被处理器执行时，实现如上所述的方法的步骤。According to another aspect of the present disclosure, at least one embodiment provides a computer-readable storage medium with a program stored on the computer-readable storage medium, and when the program is executed by a processor, it implements the method described above. step.

与相关技术相比，本公开实施例提供的多播广播服务业务的切换方法、终端及基站，可以在切换过程中优先选择支持所述终端正在进行或感兴趣的 MBS业务的基站作为目标基站，从而可以在一定程度上避免切换到目标基站后目标基站无法支持所述终端的MBS业务的问题，有利于保持切换过程中MBS会话不中断，从而保障业务的连续性和可靠性。另外，本公开实施例还可以在切换过程中由源基站向候选目标基站发送用于建立所述第一MBS业务的隧道或会话或QoS flow的请求消息，以尽快建立相关隧道或会话或QoS flow，保证后续业务传输的连续性和可靠性。Compared with related technologies, the multicast broadcast service switching method, terminal, and base station provided by the embodiments of the present disclosure can preferentially select the base station supporting the MBS service that the terminal is currently or interested in as the target base station during the switching process. Therefore, the problem that the target base station cannot support the MBS service of the terminal after handover to the target base station can be avoided to a certain extent, which is beneficial to keep the MBS session uninterrupted during the handover process, thereby ensuring service continuity and reliability. In addition, in the embodiment of the present disclosure, the source base station may send a request message for establishing the tunnel or session or QoS flow of the first MBS service to the candidate target base station during the handover process, so as to establish the relevant tunnel or session or QoS flow as soon as possible. , To ensure the continuity and reliability of subsequent business transmission.

Description of the drawings

通过阅读下文可选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出可选实施方式的目的，而并不认为是对本公开的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：By reading the detailed description of the optional embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only used for the purpose of showing alternative embodiments, and are not considered as a limitation to the present disclosure. Also, throughout the drawings, the same reference symbols are used to denote the same components. In the attached picture:

图1为相关技术的一种MBS架构的示意图；Figure 1 is a schematic diagram of an MBS architecture of related technologies;

图2为相关技术的另一种MBS架构的示意图；Figure 2 is a schematic diagram of another MBS architecture of related technologies;

图3为本公开实施例的一种应用场景示意图；FIG. 3 is a schematic diagram of an application scenario of an embodiment of the disclosure;

图4为本公开实施例提供的多播广播服务业务的切换方法应用于源基站侧时的流程图；4 is a flowchart when the method for switching a multicast broadcast service provided by an embodiment of the present disclosure is applied to the source base station side;

图5为本公开实施例提供的多播广播服务业务的切换方法应用于候选目标基站侧时的流程图；FIG. 5 is a flowchart when the method for switching a multicast broadcast service provided by an embodiment of the present disclosure is applied to the side of a candidate target base station;

图6为本公开实施例提供的多播广播服务业务的切换方法应用于终端侧时的流程图；FIG. 6 is a flowchart when the method for switching a multicast broadcast service provided by an embodiment of the disclosure is applied to the terminal side;

图7为本公开实施例提供的源基站的一种结构示意图；FIG. 7 is a schematic structural diagram of a source base station provided by an embodiment of the disclosure;

图8为本公开实施例提供的源基站的另一种结构示意图；FIG. 8 is a schematic diagram of another structure of a source base station provided by an embodiment of the disclosure;

图9为本公开实施例提供的候选目标基站的一种结构示意图；FIG. 9 is a schematic structural diagram of a candidate target base station provided by an embodiment of the disclosure;

图10为本公开实施例提供的候选目标基站的另一种结构示意图；FIG. 10 is a schematic diagram of another structure of a candidate target base station provided by an embodiment of the disclosure;

图11为本公开实施例提供的终端的一种结构示意图；FIG. 11 is a schematic structural diagram of a terminal provided by an embodiment of the disclosure;

图12为本公开实施例提供的终端的另一种结构示意图。FIG. 12 is a schematic diagram of another structure of a terminal provided by an embodiment of the disclosure.

detailed description

下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the drawings show exemplary embodiments of the present disclosure, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided for a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施例例如能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。说明书以及权利要求中“和/或”表示所连接对象的至少其中之一。The terms "first" and "second" in the specification and claims of this application are used to distinguish similar objects, and not necessarily used to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein, for example, can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those clearly listed. Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment. In the specification and claims, "and/or" means at least one of the connected objects.

本文所描述的技术不限于新空口(New Radio，NR)系统以及长期演进型(Long Time Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，并且也可用于各种无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access，SC-FDMA)和其他系统。术语“系统”和“网络”常被可互换地使用。CDMA系统可实现诸如CDMA2000、通用地面无线电接入(Universal Terrestrial Radio Access，UTRA)等无线电技术。UTRA包括宽带CDMA(Wideband Code Division Multiple Access，WCDMA)和其他CDMA变体。TDMA系统可实现诸如全球移动通信系统(Global System for Mobile Communication，GSM)之类的无线电技术。OFDMA系统可实现诸如超移动宽带(UltraMobile Broadband，UMB)、演进型UTRA(Evolution-UTRA，E-UTRA)、IEEE 802.21(Wi-Fi)、IEEE 802.16(WiMAX)、IEEE 802.20、Flash-OFDM等无线电技术。UTRA和E-UTRA是通用移动电信系统(Universal Mobile Telecommunications System，UMTS)的部分。LTE和更高级的LTE(如 LTE-A)是使用E-UTRA的新UMTS版本。UTRA、E-UTRA、UMTS、LTE、LTE-A以及GSM在来自名为“第三代伙伴项目”(3rd Generation Partnership Project，3GPP)的组织的文献中描述。CDMA2000和UMB在来自名为“第三代伙伴项目2”(3GPP2)的组织的文献中描述。本文所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。然而，以下描述出于示例目的描述了NR系统，并且在以下大部分描述中使用NR术语，尽管这些技术也可应用于NR系统应用以外的应用。The technology described in this article is not limited to New Radio (NR) systems and Long Time Evolution (LTE)/LTE-Advanced (LTE-A) systems, and can also be used for various wireless communications Systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (Frequency Division Access, FDMA), Orthogonal Frequency Division Multiple Access (Orthogonal Frequency) Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" are often used interchangeably. The CDMA system can implement radio technologies such as CDMA2000 and Universal Terrestrial Radio Access (UTRA). UTRA includes Wideband Code Division Multiple Access (WCDMA) and other CDMA variants. The TDMA system can implement radio technologies such as the Global System for Mobile Communication (GSM). OFDMA systems can implement radios such as UltraMobile Broadband (UMB), Evolved UTRA (Evolution-UTRA, E-UTRA), IEEE 802.16 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. Technology. UTRA and E-UTRA are part of Universal Mobile Telecommunications System (UMTS). LTE and more advanced LTE (such as LTE-A) are new UMTS versions that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The technology described in this article can be used for the systems and radio technologies mentioned above as well as other systems and radio technologies. However, the following description describes the NR system for illustrative purposes, and NR terminology is used in most of the description below, although these techniques can also be applied to applications other than NR system applications.

以下描述提供示例而并非限定权利要求中阐述的范围、适用性或者配置。可以对所讨论的要素的功能和布置作出改变而不会脱离本公开的精神和范围。各种示例可恰适地省略、替代、或添加各种规程或组件。例如，可以按不同于所描述的次序来执行所描述的方法，并且可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。The following description provides examples and does not limit the scope, applicability, or configuration set forth in the claims. Changes can be made to the function and arrangement of the discussed elements without departing from the spirit and scope of the present disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described method can be performed in an order different from that described, and various steps can be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

请参见图3，图3示出本公开实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络设备12。其中，终端11也可以称作用户终端或用户设备(UE，User Equipment)，终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)、个人数字助理(Personal Digital Assistant，PDA)、移动上网装置(Mobile Internet Device，MID)、可穿戴式设备(Wearable Device)或车载设备等终端侧设备，需要说明的是，在本公开实施例中并不限定终端11的具体类型。网络设备12可以是基站和/或核心网网元，其中，上述基站可以是5G及以后版本的基站(例如：gNB、5G NR NB等)，或者其他通信系统中的基站(例如：eNB、WLAN接入点、或其他接入点等)，其中，基站可被称为节点B、演进节点B、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、B节点、演进型B节点(eNB)、家用B节点、家用演进型B节点、WLAN接入点、WiFi节点或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本公开实施例中仅以NR系统中的基站为例，但是并不限定基站的具体类型。Please refer to FIG. 3, which shows a block diagram of a wireless communication system to which an embodiment of the present disclosure can be applied. The wireless communication system includes a terminal 11 and a network device 12. Among them, the terminal 11 may also be referred to as a user terminal or a user equipment (UE, User Equipment), and the terminal 11 may be a mobile phone, a tablet (Personal Computer), a laptop (Laptop Computer), or a personal digital assistant (Personal Digital Assistant). , PDA), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted device and other terminal side devices, it should be noted that the specific type of terminal 11 is not limited in the embodiments of the present disclosure . The network device 12 may be a base station and/or a core network element, where the above-mentioned base station may be a base station of 5G and later versions (for example: gNB, 5G NR NB, etc.), or a base station in other communication systems (for example: eNB, WLAN Access point, or other access points, etc.), where the base station can be called Node B, Evolved Node B, Access Point, Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (Basic Service Set, BSS), Extended Service Set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, WiFi Node or As long as some other appropriate terminology in the field achieves the same technical effect, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiments of the present disclosure, only the base station in the NR system is taken as an example, but not The specific type of base station is not limited.

基站可在基站控制器的控制下与终端11通信，在各种示例中，基站控制器可以是核心网或某些基站的一部分。一些基站可通过回程与核心网进行控制信息或用户数据的通信。在一些示例中，这些基站中的一些可以通过回程链路直接或间接地彼此通信，回程链路可以是有线或无线通信链路。无线通信系统可支持多个载波(不同频率的波形信号)上的操作。多载波发射机能同时在这多个载波上传送经调制信号。例如，每条通信链路可以是根据各种无线电技术来调制的多载波信号。每个已调信号可在不同的载波上发送并且可携带控制信息(例如，参考信号、控制信道等)、开销信息、数据等。The base station may communicate with the terminal 11 under the control of the base station controller. In various examples, the base station controller may be a part of the core network or some base stations. Some base stations can communicate control information or user data with the core network through the backhaul. In some examples, some of these base stations may directly or indirectly communicate with each other through a backhaul link, which may be a wired or wireless communication link. The wireless communication system can support operations on multiple carriers (waveform signals of different frequencies). Multi-carrier transmitters can simultaneously transmit modulated signals on these multiple carriers. For example, each communication link may be a multi-carrier signal modulated according to various radio technologies. Each modulated signal can be sent on a different carrier and can carry control information (for example, reference signals, control channels, etc.), overhead information, data, and so on.

基站可经由一个或多个接入点天线与终端11进行无线通信。每个基站可以为各自相应的覆盖区域提供通信覆盖。接入点的覆盖区域可被划分成仅构成该覆盖区域的一部分的扇区。无线通信系统可包括不同类型的基站(例如宏基站、微基站、或微微基站)。基站也可利用不同的无线电技术，诸如蜂窝或WLAN无线电接入技术。基站可以与相同或不同的接入网或运营商部署相关联。不同基站的覆盖区域(包括相同或不同类型的基站的覆盖区域、利用相同或不同无线电技术的覆盖区域、或属于相同或不同接入网的覆盖区域)可以交叠。The base station can wirelessly communicate with the terminal 11 via one or more access point antennas. Each base station can provide communication coverage for its corresponding coverage area. The coverage area of an access point can be divided into sectors that constitute only a part of the coverage area. The wireless communication system may include different types of base stations (for example, a macro base station, a micro base station, or a pico base station). The base station can also utilize different radio technologies, such as cellular or WLAN radio access technologies. The base stations can be associated with the same or different access networks or operator deployments. The coverage areas of different base stations (including coverage areas of the same or different types of base stations, coverage areas using the same or different radio technologies, or coverage areas belonging to the same or different access networks) may overlap.

无线通信系统中的通信链路可包括用于承载上行链路(Uplink，UL)传输(例如，从终端11到网络设备12)的上行链路，或用于承载下行链路(Downlink，DL)传输(例如，从网络设备12到终端11)的下行链路。UL传输还可被称为反向链路传输，而DL传输还可被称为前向链路传输。下行链路传输可以使用授权频段、非授权频段或这两者来进行。类似地，上行链路传输可以使用有授权频段、非授权频段或这两者来进行。The communication link in the wireless communication system may include an uplink for carrying uplink (Uplink, UL) transmission (for example, from the terminal 11 to the network device 12), or for carrying a downlink (DL) Transmission (e.g., from the network device 12 to the terminal 11) downlink. UL transmission may also be referred to as reverse link transmission, and DL transmission may also be referred to as forward link transmission. Downlink transmission can use licensed frequency bands, unlicensed frequency bands, or both. Similarly, uplink transmission can be performed using licensed frequency bands, unlicensed frequency bands, or both.

在终端(UE)产生移动和切换的场景下，如果源基站和目标基站之间除了交互UE感兴趣或正在进行的MBS业务，还交互UE接收MBS业务的偏好，以及目标基站或小区支持MBS业务的情况，例如，是否与核心网建立了多播隧道、采用PTP还是PTM方式发送数据等信息，则可以帮助UE优先选择已经支持MBS、且为UE优先希望的发送方式的目标小区，有利于保持切换过程中MBS会话不中断，从而保障业务的连续性和可靠性。In the scenario of terminal (UE) movement and handover, if the source base station and the target base station not only exchange the MBS services that the UE is interested in or are in progress, but also exchange the UE's preference for receiving MBS services, and the target base station or cell supports MBS services For example, whether a multicast tunnel is established with the core network, whether PTP or PTM is used to send data, etc., can help the UE to preferentially select the target cell that already supports MBS and is the preferred transmission mode of the UE, which is conducive to maintaining The MBS session is not interrupted during the handover process, thus ensuring business continuity and reliability.

请参照图4，本公开实施例提供的一种MBS业务的切换方法，在应用于源基站侧时，包括：Referring to FIG. 4, an MBS service handover method provided by an embodiment of the present disclosure, when applied to the source base station side, includes:

步骤41，源基站获取至少一个候选目标基站对第一MBS业务的支持信息，所述第一MBS业务为待切换终端正在进行的或感兴趣的MBS业务。Step 41: The source base station obtains support information of at least one candidate target base station for the first MBS service, where the first MBS service is an ongoing or interesting MBS service of the terminal to be handed over.

这里，在需要为终端切换服务基站时，源基站获取至少一个候选目标基站对第一MBS业务的支持信息。所述第一MBS业务是指待切换终端正在进行的MBS业务或待切换终端感兴趣的MBS业务。待切换终端正在进行的MBS业务可能为所述待切换终端感兴趣的MBS业务中的某个/某些业务。Here, when it is necessary to switch the serving base station for the terminal, the source base station obtains the support information of at least one candidate target base station for the first MBS service. The first MBS service refers to the ongoing MBS service of the terminal to be handed over or the MBS service that the terminal to be handed over is interested in. The MBS service being performed by the terminal to be handed over may be some of the MBS services that the terminal to be handed over is interested in.

上述步骤41中，源基站可以向候选目标基站发送第一MBS业务的业务属性信息，然后，接收所述候选目标基站反馈的对所述第一MBS业务的支持信息；此时，作为一种实现方式，可以在切换过程中，如通过切换准备过程的切换请求消息中，向候选目标基站发送所述第一MBS业务的业务属性信息。In the above step 41, the source base station may send the service attribute information of the first MBS service to the candidate target base station, and then receive the support information for the first MBS service fed back by the candidate target base station; in this case, as an implementation In a handover process, for example, in a handover request message in a handover preparation process, the service attribute information of the first MBS service may be sent to the candidate target base station.

上述步骤41中，所述源基站还可以是从预先获取的所述候选目标基站对MBS业务的支持信息，确定所述候选目标基站对所述第一MBS业务的支持信息。这里，所述候选目标基站对MBS业务的支持信息可以是在源基站和候选目标基站建立基站间接口的过程中交互得到的，或者在更新基站间接口的过程中交互得到的。In the above step 41, the source base station may also determine the support information of the candidate target base station for the first MBS service from pre-acquired support information of the candidate target base station for the MBS service. Here, the MBS service support information of the candidate target base station may be obtained through interaction during the process of establishing an interface between the source base station and the candidate target base station, or during the process of updating the interface between the base stations.

步骤42，所述源基站选择所述待切换终端切换的目标基站。Step 42: The source base station selects a target base station to be handed over by the terminal to be handed over.

这里，源基站可以根据所述至少一个候选目标基站对所述第一MBS业务的支持信息，选择所述待切换终端切换的目标基站。例如，优先选择支持所述第一MBS业务的候选目标基站作为所述目标基站。Here, the source base station may select the target base station to be handed over by the terminal to be handed over according to the support information of the at least one candidate target base station for the first MBS service. For example, a candidate target base station supporting the first MBS service is preferentially selected as the target base station.

通过以上步骤，本公开实施例可以在切换过程中优先选择支持所述终端正在进行或感兴趣的MBS业务的基站作为目标基站，从而可以在一定程度上避免切换到目标基站后目标基站无法支持所述终端的MBS业务的问题，有利于保持切换过程中MBS会话不中断，从而保障业务的连续性和可靠性。Through the above steps, the embodiment of the present disclosure can preferentially select the base station supporting the MBS service that the terminal is currently or interested in as the target base station during the handover process, thereby avoiding to a certain extent that the target base station cannot support all the base stations after handover to the target base station. The problem of the MBS service of the terminal is helpful to keep the MBS session uninterrupted during the handover process, thereby ensuring the continuity and reliability of the service.

作为一种实现方式，本公开实施例中源基站可以接收待切换终端发送的其所感兴趣或正在进行的第一MBS业务的业务属性信息，又或者是，源基站从网络侧的其他网元(如核心网网元)处获取所述待切换终端所感兴趣或正在进行的第一MBS业务的业务属性信息。上述第一MBS业务的业务属性信息可以提供给候选目标基站，以帮助候选目标基站确定自身对所述第一MBS业务的支持信息。As an implementation manner, in the embodiment of the present disclosure, the source base station may receive the service attribute information of the first MBS service that it is interested in or in progress sent by the terminal to be handed over, or, the source base station may obtain information from other network elements on the network side ( For example, the core network element) obtains the service attribute information of the first MBS service that the terminal to be handed over is interested in or is in progress. The foregoing service attribute information of the first MBS service may be provided to the candidate target base station to help the candidate target base station determine its own support information for the first MBS service.

具体的，MBS业务(如第一MBS业务)的业务属性信息可以包括以下信息中的至少一种：临时移动组标识(Temporary Mobile Group Identifier TMGI)、多播组标识、多播地址、多播会话上下文标识、多播服务质量(Quality of Service，QoS)流(flow)标识等。Specifically, the service attribute information of the MBS service (such as the first MBS service) may include at least one of the following information: Temporary Mobile Group Identifier TMGI, multicast group identifier, multicast address, and multicast session Context identification, multicast quality of service (Quality of Service, QoS) flow identification, etc.

述对所述第一MBS业务的支持信息具体可以包括以下信息中的至少一种：The support information for the first MBS service may specifically include at least one of the following information:

1)候选目标基站或候选目标小区是否能够发送或提供所述第一MBS业务；1) Whether the candidate target base station or candidate target cell can transmit or provide the first MBS service;

2)候选目标基站或候选目标小区是否与核心网建立了所述第一MBS业务的隧道、会话或QoS flow；这里，所述隧道可以是N3隧道或N9隧道，所述会话是指PDU session。2) Whether the candidate target base station or candidate target cell has established a tunnel, session or QoS flow of the first MBS service with the core network; here, the tunnel may be an N3 tunnel or an N9 tunnel, and the session refers to a PDU session.

3)在候选目标基站或候选目标小区尚未与核心网建立所述第一MBS业务的隧道、会话或QoS flow的情况下，所述候选目标基站或候选目标小区是否可以为所述待切换终端建立所述第一MBS业务的隧道、会话或QoS flow；3) In the case that the candidate target base station or candidate target cell has not yet established the first MBS service tunnel, session or QoS flow with the core network, whether the candidate target base station or candidate target cell can be established for the terminal to be handed over The tunnel, session or QoS flow of the first MBS service;

4)候选目标基站或候选目标小区当前发送所述第一MBS业务的传输方式以及与所述传输方式相关的发送参数，所述传输方式为PTM和/或PTP；这里，同一个小区中同一个业务可能同时采用PTP和PTM方式发送。4) The candidate target base station or candidate target cell currently transmits the transmission mode of the first MBS service and the transmission parameters related to the transmission mode, and the transmission mode is PTM and/or PTP; here, the same one in the same cell Services may be sent using PTP and PTM at the same time.

5)候选目标基站或候选目标小区向所述待切换终端发送所述第一MBS业务时采用的传输方式。5) The transmission mode used when the candidate target base station or candidate target cell sends the first MBS service to the terminal to be handed over.

另外，在上述步骤42之前，所述源基站还可以向所述候选目标基站发送用于请求建立所述第一MBS业务的隧道或会话或QoS flow的请求消息。例如，在步骤41中向候选目标基站发送第一MBS业务的业务属性信息的同时或之前或之后，发送上述请求消息，从而可以提前在候选目标基站处建立相关连接，保证后续业务传输的连续性和可靠性。In addition, before step 42, the source base station may also send to the candidate target base station a request message for requesting to establish a tunnel or session or QoS flow of the first MBS service. For example, at the same time or before or after the service attribute information of the first MBS service is sent to the candidate target base station in step 41, the above request message is sent, so that the relevant connection can be established at the candidate target base station in advance to ensure the continuity of subsequent service transmission And reliability.

下面对本公开实施例如何选择所述待切换终端切换的目标基站进行说明。The following describes how to select the target base station for handover of the terminal to be handed over in the embodiment of the present disclosure.

作为一种实现方式，所述源基站根据所述至少一个候选目标基站对所述第一MBS业务的支持信息，所述待切换终端的测量报告以及接收所述第一MBS业务的偏好信息，选择所述待切换终端切换的目标基站，其中，所述偏好信息包括所述第一MBS业务的期望传输方式，所述期望传输方式可以是针对所述待切换终端、或针对每个MBS业务或针对每个带宽部分(Bandwidth Part，BWP)或针对每个同步信号块(Synchronization Signal and PBCH block，SSB)而设置的。As an implementation manner, the source base station selects according to the support information of the at least one candidate target base station for the first MBS service, the measurement report of the terminal to be handed over, and the preference information for receiving the first MBS service The target base station for the handover of the terminal to be handed over, wherein the preference information includes a desired transmission mode of the first MBS service, and the desired transmission mode may be for the terminal to be handed over, or for each MBS service or for Each bandwidth part (Bandwidth Part, BWP) or for each synchronization signal block (Synchronization Signal and PBCH block, SSB) is set.

例如，源基站可以根据所述待切换终端的测量报告，从所述至少一个候选目标基站或小区中筛选出信号质量满足预设条件的第一类基站或小区；然后，从所述第一类基站或小区中筛选出能够发送或提供所述第一MBS业务的第二类基站或小区；然后，从所述第二类基站或小区中筛选出为所述待切换终端发送所述第一MBS业务时采用的传输方式与所述偏好信息相匹配的基站或小区，作为所述目标基站或目标小区。这里，目标小区是目标基站的某个小区。以上仅是本公开实施例选择目标基站的一种判断示例，本公开实施例还可以采用与上述判断方式不同的判断顺序以及采用的不同判断条件进行判断。For example, the source base station may screen out the first type of base station or cell whose signal quality meets a preset condition from the at least one candidate target base station or cell according to the measurement report of the terminal to be handed over; A second type of base station or cell that can send or provide the first MBS service is selected from the base stations or cells; then, the second type of base station or cell is selected from the second type of base station or cell to send the first MBS to the terminal to be handed over. The base station or cell whose transmission mode used in the service matches the preference information is used as the target base station or target cell. Here, the target cell is a certain cell of the target base station. The above is only a judgment example for selecting the target base station in the embodiment of the present disclosure, and the embodiment of the present disclosure may also use different judgment sequences and different judgment conditions from the foregoing judgment methods for judgment.

另外，在上述步骤42之前，所述源基站还可以接收所述待切换终端发送的接收所述第一MBS业务的偏好信息，从而用于上述的判断过程。当然，上述偏好信息还可以是从网络侧的其他网元处(例如，保存有终端的MBS业务偏好信息的网元)获取。In addition, before the foregoing step 42, the source base station may also receive preference information for receiving the first MBS service sent by the terminal to be handed over, so as to be used in the foregoing judgment process. Of course, the above preference information may also be obtained from other network elements on the network side (for example, a network element storing MBS service preference information of the terminal).

在上述步骤42选择所述待切换终端切换的目标基站的步骤之后，如果所述目标基站或目标小区尚未与核心网建立所述第一MBS业务的隧道或会话或QoS flow，此时，源基站还可以向所述目标基站发送用于建立所述第一MBS业务的隧道或会话或QoS flow的通知消息，以尽快建立相关隧道或会话或QoS flow。这里，所述隧道可以是N3隧道或N9隧道，所述会话是指PDU session。After the step 42 of selecting the target base station for the handover of the terminal to be handed over, if the target base station or target cell has not yet established the first MBS service tunnel or session or QoS flow with the core network, at this time, the source base station It is also possible to send a notification message for establishing a tunnel or session or QoS flow of the first MBS service to the target base station, so as to establish a related tunnel or session or QoS flow as soon as possible. Here, the tunnel may be an N3 tunnel or an N9 tunnel, and the session refers to a PDU session.

以上从源基站侧对本公开实施例的方法进行了说明。下面进一步从候选目标基站侧进行描述。The method of the embodiment of the present disclosure has been described above from the source base station side. The following further describes from the side of the candidate target base station.

请参照图5，本公开实施例提供的MBS业务的切换方法，在应用于候选目标基站时包括：Referring to FIG. 5, the MBS service handover method provided by the embodiment of the present disclosure, when applied to a candidate target base station, includes:

步骤51，候选目标基站向源基站发送对第一MBS业务的支持信息，所述第一MBS业务为待切换终端正在进行的或感兴趣的MBS业务。Step 51: The candidate target base station sends support information for the first MBS service to the source base station, where the first MBS service is an ongoing or interesting MBS service of the terminal to be handed over.

类似的，所述对所述第一MBS业务的支持信息包括以下信息中的至少一种：Similarly, the support information for the first MBS service includes at least one of the following information:

2)候选目标基站或候选目标小区是否与核心网建立了所述第一MBS业务的隧道或会话或QoS flow；这里，所述隧道可以是N3隧道或N9隧道，所述会话是指PDU session。2) Whether the candidate target base station or candidate target cell has established a tunnel or session or QoS flow of the first MBS service with the core network; here, the tunnel may be an N3 tunnel or an N9 tunnel, and the session refers to a PDU session.

3)在候选目标基站或候选目标小区尚未与核心网建立所述第一MBS业务的隧道或会话或QoS flow的情况下，所述候选目标基站或候选目标小区是否可以为所述待切换终端建立所述第一MBS业务的隧道或会话或QoS flow；3) In the case that the candidate target base station or candidate target cell has not yet established the first MBS service tunnel or session or QoS flow with the core network, whether the candidate target base station or candidate target cell can be established for the terminal to be handed over The tunnel or session or QoS flow of the first MBS service;

4)候选目标基站或候选目标小区当前发送所述第一MBS业务的传输方式以及与所述传输方式相关的发送参数，所述传输方式包括点到多点PTM和/或点到点PTP；4) The current transmission mode of the candidate target base station or candidate target cell for sending the first MBS service and the transmission parameters related to the transmission mode, the transmission mode including point-to-multipoint PTM and/or point-to-point PTP;

通过以上步骤，本公开实施例可以将候选目标基站对待切换终端的MBS业务的支持信息发送给源基站，帮助源基站在切换过程中优先选择支持终端的MBS业务的目标基站，从而改善业务的连续性和可靠性。Through the above steps, the embodiment of the present disclosure can send the candidate target base station's MBS service support information of the terminal to be handed over to the source base station, helping the source base station to preferentially select the target base station supporting the terminal’s MBS service during the handover process, thereby improving service continuity Sex and reliability.

具体的，上述步骤51中，候选目标基站可以是在接收到源基站发送的第一MBS业务的业务属性信息后，向源基站发送对第一MBS业务的支持信息。例如，根据所述第一MBS业务的业务属性信息，确定自身对所述第一MBS业务的支持信息，然后发送给所述源基站。所述业务属性信息包括以下信息中的至少一种：临时移动组标识TMGI、多播组标识、多播地址、多播会话上下文标识、多播QoS流标识等。Specifically, in step 51, the candidate target base station may send support information for the first MBS service to the source base station after receiving the service attribute information of the first MBS service sent by the source base station. For example, according to the service attribute information of the first MBS service, determine its own support information for the first MBS service, and then send it to the source base station. The service attribute information includes at least one of the following information: temporary mobile group identifier TMGI, multicast group identifier, multicast address, multicast session context identifier, multicast QoS flow identifier, etc.

作为另一种实现方式，候选目标基站还可以是在建立网络设备间接口或者在网络设备配置更新时，将候选目标基站对MBS业务的支持信息发送给源基站。候选目标基站对MBS业务的支持信息可以包括候选目标基站对各种MBS业务的支持信息。As another implementation manner, the candidate target base station may also send the MBS service support information of the candidate target base station to the source base station when an interface between network devices is established or when the network device configuration is updated. The support information of the candidate target base station for the MBS service may include the support information of the candidate target base station for various MBS services.

本公开实施例中，所述候选目标基站还可以接收所述源基站发送的用于请求建立所述第一MBS业务的隧道或会话或QoS flow的请求消息；然后，根据所述请求消息，与核心网之间建立所述第一MBS业务的隧道或会话或QoS flow。通过该步骤，本公开实施例可以预先建立第一MBS业务的隧道或会话或QoS flow，这样在本候选目标基站被选中为目标基站时，可以减少业务中断时间，保证连续性和可靠性。这里，所述隧道可以是N3隧道或N9隧道，所述会话是指PDU session。In the embodiment of the present disclosure, the candidate target base station may also receive a request message sent by the source base station for requesting the establishment of a tunnel or session or QoS flow of the first MBS service; then, according to the request message, and A tunnel or session or QoS flow of the first MBS service is established between the core networks. Through this step, the embodiment of the present disclosure can establish a tunnel or session or QoS flow of the first MBS service in advance, so that when the candidate target base station is selected as the target base station, service interruption time can be reduced, and continuity and reliability can be ensured. Here, the tunnel may be an N3 tunnel or an N9 tunnel, and the session refers to a PDU session.

请参照图6，本公开实施例提供的MBS业务的切换方法，在应用于终端侧时，包括：Referring to FIG. 6, the MBS service switching method provided by the embodiment of the present disclosure, when applied to the terminal side, includes:

步骤61，终端向源基站发送接收第一MBS业务的偏好信息。Step 61: The terminal sends preference information for receiving the first MBS service to the source base station.

这里，所述第一MBS业务为待切换终端正在进行的或感兴趣的MBS业务，所述偏好信息可以包括所述第一MBS业务的期望传输方式，所述期望传输方式是针对所述终端、或针对每个MBS业务或针对每个带宽部分BWP或针对每个同步信号块SSB而设置的。所述期望传输方式具体可以包括PTP和/或PTM。Here, the first MBS service is an MBS service that the terminal to be handed over is ongoing or is of interest, and the preference information may include a desired transmission mode of the first MBS service, and the desired transmission mode is specific to the terminal, Or set for each MBS service or for each bandwidth part BWP or for each synchronization signal block SSB. The desired transmission mode may specifically include PTP and/or PTM.

通过以上步骤，本公开实施例可以将终端对其感兴趣或正在进行的MBS业务的偏好信息发送给源基站，以帮助源基站选择合适的目标基站，满足终端的传输方式的需要。Through the above steps, the embodiment of the present disclosure can send preference information of the MBS service that the terminal is interested in or in progress to the source base station to help the source base station select a suitable target base station and meet the needs of the terminal's transmission mode.

作为一种实现方式，所述终端还可以向源基站发送第一MBS业务的业务属性信息，这样源基站可以将所述第一MBS业务的业务属性信息发送给候选目标基站，并获取候选目标基站反馈的对第一MBS业务的支持信息。这里，所述业务属性信息具体可以包括以下信息中的至少一种：TMGI、多播组标识、多播地址、多播会话上下文标识、多播QoS流标识。As an implementation manner, the terminal may also send the service attribute information of the first MBS service to the source base station, so that the source base station can send the service attribute information of the first MBS service to the candidate target base station, and obtain the candidate target base station The feedback of the support information for the first MBS service. Here, the service attribute information may specifically include at least one of the following information: TMGI, multicast group identifier, multicast address, multicast session context identifier, and multicast QoS flow identifier.

以上分别从源基站、候选目标基站和终端侧对本公开实施例的方法进行了介绍，下面通过一个设备间的交互流程的示例，对发明实施例作进一步的描述，该示例包括以下步骤：The methods of the embodiments of the present disclosure have been introduced respectively from the source base station, the candidate target base station, and the terminal side. The following uses an example of an interaction process between devices to further describe the embodiment of the invention. The example includes the following steps:

a)可选地，终端(UE)向服务基站(即源基站)上报自己感兴趣的MBS 业务的相关信息，如TMGI,多播组ID，多播地址，多播Session context ID,多播QoS Flow ID中的一项或多项；进一步地，终端还可指示希望优先使用PTP还是PTM来接收MBS业务，该指示信息可能是per UE的，也可能是per MBS业务的，或per SSB/per BWP的a) Optionally, the terminal (UE) reports to the serving base station (i.e. source base station) relevant information about the MBS service it is interested in, such as TMGI, multicast group ID, multicast address, multicast session context ID, multicast QoS One or more of Flow ID; further, the terminal can also indicate whether it wants to prefer PTP or PTM to receive MBS service. This indication information may be per UE, per MBS service, or per SSB/per BWP

b)切换准备过程中，如在切换请求消息中，源基站向目标基站发送前述步骤a所述的UE感兴趣的或正在进行的MBS相关信息；进一步地，源基站还可请求目标基站与UPF建立用于MBS业务的隧道(如：源基站预测将会有多个对MBS业务感兴趣或正在进行MBS业务的UE切换到该目标基站，则可请求建立共享N3隧道(shared N3 tunnel))。b) During the handover preparation process, such as in the handover request message, the source base station sends to the target base station the information about the MBS that the UE is interested in or is in progress as described in step a; further, the source base station can also request the target base station and UPF Establish a tunnel for the MBS service (for example, the source base station predicts that there will be multiple UEs interested in the MBS service or performing the MBS service handover to the target base station, and may request the establishment of a shared N3 tunnel).

c)可选地，目标基站根据源基站提供的信息，判断自身与UPF/MB-UPF之间是否已经建立了UE感兴趣的MBS业务对应的隧道(如shared N3 tunnel)。可选地，如果没有建立，则目标基站可进一步向AMF/MB-AMF，或UPF/MB-UPF，或SMF/MB-SMF发起针对该MBS业务的session或隧道的建立过程，其中可携带多播组ID，多播地址，多播Session context ID,多播QoS Flow ID中的一项或多项；目标基站也可先不与核心网建立MBS session或隧道，而是再后续步骤d中反馈没有建立。c) Optionally, the target base station determines whether a tunnel (such as shared N3 tunnel) corresponding to the MBS service that the UE is interested in has been established between itself and the UPF/MB-UPF based on the information provided by the source base station. Optionally, if it is not established, the target base station may further initiate a session or tunnel establishment process for the MBS service to AMF/MB-AMF, or UPF/MB-UPF, or SMF/MB-SMF, which may carry multiple One or more of the group ID, multicast address, multicast session context ID, and multicast QoS Flow ID; the target base station may also not establish an MBS session or tunnel with the core network first, but then feedback in the subsequent step d Not established.

d)候选目标基站向源基站发送对应MBS业务的支持情况，如：d) The candidate target base station sends the corresponding MBS service support status to the source base station, such as:

1)候选目标基站或候选目标小区已经与核心网如UPF建立了多播隧道或session；1) The candidate target base station or candidate target cell has established a multicast tunnel or session with the core network such as UPF;

2)候选目标基站或候选目标小区没有与核心网如UPF建立多播隧道或session、但是后续可以给该UE建立；2) The candidate target base station or candidate target cell has not established a multicast tunnel or session with the core network such as UPF, but can be established for the UE subsequently;

3)候选目标基站或候选目标小区内部目前发送UE感兴趣的或正在进行的MBS业务的方式，即PTP或PTM；若有多种MBS业务，则可按per业务的方式提供支持情况；如果是PTM，还可进一步发送目标小区接收MBS业务使用的组无线网络临时标识(group radio network temporary identifier，G-RNTI)、采用PMT接收的质量门限(如参考信号接收功率(reference signal received power，RSRP)门限)等；3) Candidate target base station or candidate target cell currently transmits the MBS service that the UE is interested in or in progress, namely PTP or PTM; if there are multiple MBS services, support can be provided in the form of per service; if yes PTM can further send the group radio network temporary identifier (G-RNTI) used by the target cell to receive MBS services, and the quality threshold of PMT reception (such as reference signal received power, RSRP) Threshold) etc.;

4)候选目标基站或候选目标小区给该UE发送MBS业务采用的方式是PTP或PTM；4) The method used by the candidate target base station or candidate target cell to send MBS services to the UE is PTP or PTM;

5)候选目标基站或候选目标小区内无法发送或提供该MBS业务，等等。5) The MBS service cannot be transmitted or provided in the candidate target base station or the candidate target cell, and so on.

e)源基站根据目标基站的反馈，以及UE的测量结果、接收MBS业务的偏好、等信息，帮助UE选择合适的目标基站或目标小区进行切换。如：e) The source base station helps the UE to select a suitable target base station or target cell for handover according to the feedback of the target base station, as well as the UE's measurement results, preferences for receiving MBS services, and other information. like:

1)源基站帮助UE排除不支持或无法发送UE感兴趣或正在进行的MBS业务的目标小区；1) The source base station helps the UE to eliminate the target cell that does not support or cannot transmit the MBS service that the UE is interested in or is in progress;

2)对于希望优先通过PTM接收MBS业务的UE，为该UE优先选择小区内部通过PTM的方式发送该MBS业务的目标小区；2) For UEs that wish to preferentially receive MBS services through PTM, preferentially select the target cell within the cell that sends the MBS services through PTM;

3)对于希望优先通过PTP接收MBS业务的UE，为该UE优先选择小区内部通过PTP的方式发送该MBS业务的目标小区，或者优先择没有跟UPF建立N3 tunnel的目标小区。3) For UEs that want to preferentially receive MBS services through PTP, preferentially select target cells within the cell that send the MBS services through PTP, or preferentially select target cells that have not established a N3 tunnel with UPF.

f)源基站进一步通知目标基站，建立用于MBS业务的shared N3 tunnel或会话(如果之前目标基站没有建立的话)f) The source base station further informs the target base station to establish a shared N3 tunnel or session for the MBS service (if the target base station has not been established before)

g)基站还可在建立网络设备间Xn接口或者在网络设备配置更新时交互自身是否为MBS业务建立shared N3 tunnel或会话，采用PTP还是PTM发送各MBS业务的信息，这样可避免每次切换过程中交互，从而节省Xn接口上的信令开销。g) The base station can also interact whether to establish a shared N3 tunnel or session for the MBS service when establishing the Xn interface between network devices or when the network device configuration is updated, and use PTP or PTM to send the information of each MBS service, so as to avoid each handover process In order to save the signaling overhead on the Xn interface.

从以上示例可以看出，本公开实施例的源基站和候选目标基站之间交互UE接收MBS业务的偏好，以及目标基站或小区支持MBS业务的情况等信息，帮助UE优先选择已经支持MBS、且接收方式是UE优先希望的目标小区，并保持切换过程中MBS session尽量不中断，从而保障业务的连续性和可靠性。It can be seen from the above examples that the source base station and the candidate target base station in the embodiment of the present disclosure interact with the UE’s preference for receiving MBS services, and information such as the target base station or cell’s support of MBS services, and help the UE to preferentially select those that already support MBS. The receiving mode is the target cell that the UE prefers, and the MBS session is kept as uninterrupted as possible during the handover process, so as to ensure the continuity and reliability of the service.

以上介绍了本公开实施例的各种方法。下面将进一步提供实施上述方法的装置。The various methods of the embodiments of the present disclosure have been described above. A device for implementing the above method will be further provided below.

请参照图7，本公开实施例提供了一种源基站70，包括：Referring to FIG. 7, an embodiment of the present disclosure provides a source base station 70, including:

支持信息获取模块71，用于获取至少一个候选目标基站对第一MBS业务的支持信息，所述第一MBS业务为待切换终端正在进行的或感兴趣的MBS业务；The support information acquisition module 71 is configured to acquire support information of at least one candidate target base station for a first MBS service, where the first MBS service is an ongoing or interested MBS service of the terminal to be handed over;

目标基站选择模块72，用于选择所述待切换终端切换的目标基站。The target base station selection module 72 is configured to select the target base station to be handed over by the terminal to be handed over.

可选的，所述的源基站还包括以下模块(图中未示出)：Optionally, the source base station further includes the following modules (not shown in the figure):

可选的，所述业务属性信息包括以下信息中的至少一种：临时移动组标识TMGI、多播组标识、多播地址、多播会话上下文标识、多播QoS流标识。Optionally, the service attribute information includes at least one of the following information: a temporary mobility group identifier TMGI, a multicast group identifier, a multicast address, a multicast session context identifier, and a multicast QoS flow identifier.

可选的，所述目标基站选择模块，还用于根据所述至少一个候选目标基站对所述第一MBS业务的支持信息，选择所述待切换终端切换的目标基站。Optionally, the target base station selection module is further configured to select the target base station for the handover of the terminal to be handed over according to the support information of the at least one candidate target base station for the first MBS service.

可选的，所述对所述第一MBS业务的支持信息包括以下信息中的至少一种：Optionally, the support information for the first MBS service includes at least one of the following information:

可选的，所述目标基站选择模块，还用于根据所述至少一个候选目标基站对所述第一MBS业务的支持信息，所述待切换终端的测量报告以及接收所述第一MBS业务的偏好信息，选择所述待切换终端切换的目标基站，其中，所述偏好信息包括所述第一MBS业务的期望传输方式，所述期望传输方式是针对所述待切换终端、或针对每个MBS业务或针对每个带宽部分BWP或针对每个同步信号块SSB而设置的。Optionally, the target base station selection module is further configured to support information of the first MBS service according to the at least one candidate target base station, the measurement report of the terminal to be handed over, and the information about receiving the first MBS service. Preference information, select the target base station for the handover of the terminal to be handed over, where the preference information includes the desired transmission mode of the first MBS service, and the desired transmission mode is for the terminal to be handed over or for each MBS The service is set either for each bandwidth part BWP or for each synchronization signal block SSB.

可选的，所述目标基站选择模块，还用于根据所述待切换终端的测量报告，从所述至少一个候选目标基站或小区中筛选出信号质量满足预设条件的第一类基站或小区；从所述第一类基站或小区中筛选出能够发送或提供所述第一MBS业务的第二类基站或小区；从所述第二类基站或小区中筛选出为所述待切换终端发送所述第一MBS业务时采用的传输方式与所述偏好信息相匹配的基站或小区，作为所述目标基站或小区。Optionally, the target base station selection module is further configured to select, from the at least one candidate target base station or cell, the first-type base station or cell whose signal quality meets a preset condition according to the measurement report of the terminal to be handed over ; From the first type of base station or cell, select a second type of base station or cell that can send or provide the first MBS service; select from the second type of base station or cell to be sent to the terminal to be handed over The base station or cell whose transmission mode used in the first MBS service matches the preference information is used as the target base station or cell.

可选的，所述支持信息获取模块，还用于：Optionally, the support information acquisition module is also used for:

从预先获取的所述候选目标基站对MBS业务的支持信息，确定所述候选目标基站对所述第一MBS业务的支持信息，其中，所述候选目标基站对MBS业务的支持信息是建立网络设备间接口或者在网络设备配置更新时交互得到的。From the pre-acquired support information of the candidate target base station for the MBS service, determine the support information of the candidate target base station for the first MBS service, wherein the support information of the candidate target base station for the MBS service is the establishment of network equipment Inter-interface or through interaction when the network device configuration is updated.

需要说明的是，该实施例中的装置是与上述图4所示的方法对应的装置，上述各实施例中的实现方式均适用于该装置的实施例中，也能达到相同的技术效果。本公开实施例提供的上述装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。It should be noted that the device in this embodiment is a device corresponding to the method shown in FIG. 4, and the implementation manners in the foregoing embodiments are all applicable to the embodiments of the device, and the same technical effects can be achieved. The above-mentioned device provided by the embodiment of the present disclosure can realize all the method steps realized by the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be detailed here. Go into details.

请参考图8，本公开实施例提供了源基站800的一结构示意图，包括：处理器801、收发机802、存储器803和总线接口，其中：Please refer to FIG. 8, an embodiment of the present disclosure provides a schematic structural diagram of a source base station 800, including: a processor 801, a transceiver 802, a memory 803, and a bus interface, where:

在本公开实施例中，网络侧设备800还包括：存储在存储器上803并可在处理器801上运行的程序，所述程序被处理器801执行时实现如下步骤：In the embodiment of the present disclosure, the network side device 800 further includes: a program that is stored in the memory 803 and can run on the processor 801, and when the program is executed by the processor 801, the following steps are implemented:

获取至少一个候选目标基站对第一MBS业务的支持信息，所述第一MBS业务为待切换终端正在进行的或感兴趣的MBS业务；Acquiring support information of at least one candidate target base station for a first MBS service, where the first MBS service is an ongoing or interesting MBS service of the terminal to be handed over;

选择所述待切换终端切换的目标基站。Select the target base station to be handed over by the terminal to be handed over.

可理解的，本公开实施例中，所述计算机程序被处理器801执行时可实现上述图4所示的多播广播服务业务的切换方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。It is understandable that, in the embodiment of the present disclosure, when the computer program is executed by the processor 801, each process of the method for switching the multicast broadcast service shown in FIG. 4 can be realized, and the same technical effect can be achieved. To avoid repetition, I won’t repeat them here.

在图8中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器801代表的一个或多个处理器和存储器803代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机802可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。In FIG. 8, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 801 and various circuits of the memory represented by the memory 803 are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The transceiver 802 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.

处理器801负责管理总线架构和通常的处理，存储器803可以存储处理器801在执行操作时所使用的数据。The processor 801 is responsible for managing the bus architecture and general processing, and the memory 803 can store data used by the processor 801 when performing operations.

在本公开的一些实施例中，还提供了一种计算机可读存储介质，其上存储有程序，该程序被处理器执行时实现以下步骤：In some embodiments of the present disclosure, a computer-readable storage medium is also provided, on which a program is stored, and the program is executed by a processor to implement the following steps:

该程序被处理器执行时能实现上述应用于源基站侧的多播广播服务业务的切换方法中的所有实现方式，且能达到相同的技术效果，为避免重复，此处不再赘述。When the program is executed by the processor, it can realize all the implementation modes in the switching method of the multicast broadcast service service applied to the source base station side, and can achieve the same technical effect. In order to avoid repetition, it will not be repeated here.

需要说明的是，该实施例中的基站是与上述图4所示的方法对应的源基站，上述各实施例中的实现方式均适用于该源基站的实施例中，也能达到相同的技术效果。该终端中，收发机802与存储器803，以及收发机802与处理器801均可以通过总线接口通讯连接，处理器801的功能也可以由收发机802实现，收发机802的功能也可以由处理器801实现。在此需要说明的是，本公开实施例提供的上述源基站，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。It should be noted that the base station in this embodiment is the source base station corresponding to the method shown in FIG. 4, and the implementation manners in the foregoing embodiments are all applicable to the source base station embodiment, and the same technology can be achieved. Effect. In this terminal, the transceiver 802 and the memory 803, as well as the transceiver 802 and the processor 801 can all be connected through a bus interface. The function of the processor 801 can also be realized by the transceiver 802, and the function of the transceiver 802 can also be realized by the processor. 801 implementation. It should be noted here that the above-mentioned source base station provided by the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment, and can achieve the same technical effect. The same parts and beneficial effects will be described in detail.

请参照图9，本公开实施例提供了一种候选目标基站90，包括：Referring to FIG. 9, an embodiment of the present disclosure provides a candidate target base station 90, including:

支持信息发送模块91，用于向源基站发送对第一MBS业务的支持信息，所述第一MBS业务为待切换终端正在进行的或感兴趣的MBS业务。The support information sending module 91 is configured to send support information for the first MBS service to the source base station, where the first MBS service is an ongoing or interesting MBS service of the terminal to be handed over.

可选的，所述支持信息发送模块，还用于：Optionally, the support information sending module is also used for:

可选的，所述的候选目标基站还包括：Optionally, the candidate target base station further includes:

请参考图10，本公开实施例提供了候选目标基站1000的一结构示意图，包括：处理器1001、收发机1002、存储器1003和总线接口，其中：Please refer to FIG. 10, an embodiment of the present disclosure provides a schematic structural diagram of a candidate target base station 1000, including: a processor 1001, a transceiver 1002, a memory 1003, and a bus interface, where:

在本公开实施例中，候选目标基站1000还包括：存储在存储器上1003并可在处理器1001上运行的程序，所述程序被处理器1001执行时实现如下步骤：In the embodiment of the present disclosure, the candidate target base station 1000 further includes: a program that is stored in the memory 1003 and can be run on the processor 1001, and when the program is executed by the processor 1001, the following steps are implemented:

可理解的，本公开实施例中，所述计算机程序被处理器1001执行时可实现上述图5所示的多播广播服务业务的切换方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。It is understandable that, in the embodiment of the present disclosure, when the computer program is executed by the processor 1001, each process of the method for switching the multicast broadcast service shown in FIG. 5 can be realized, and the same technical effect can be achieved. To avoid repetition, I won’t repeat them here.

在图10中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器1001代表的一个或多个处理器和存储器1003代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机1002可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。In FIG. 10, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1001 and various circuits of the memory represented by the memory 1003 are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The transceiver 1002 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.

处理器1001负责管理总线架构和通常的处理，存储器1003可以存储处理器1001在执行操作时所使用的数据。The processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1003 can store data used by the processor 1001 when performing operations.

需要说明的是，该实施例中的基站是与上述图5所示的方法对应的候选目标基站，上述各实施例中的实现方式均适用于该候选目标基站的实施例中，也能达到相同的技术效果。该候选目标基站中，收发机1002与存储器1003，以及收发机1002与处理器1001均可以通过总线接口通讯连接，处理器1001的功能也可以由收发机1002实现，收发机1002的功能也可以由处理器1001实现。在此需要说明的是，本公开实施例提供的上述候选目标基站，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。It should be noted that the base station in this embodiment is a candidate target base station corresponding to the method shown in FIG. Technical effect. In the candidate target base station, the transceiver 1002 and the memory 1003, and the transceiver 1002 and the processor 1001 can all be connected through a bus interface. The function of the processor 1001 can also be realized by the transceiver 1002, and the function of the transceiver 1002 can also be realized by the transceiver 1002. The processor 1001 is implemented. It should be noted here that the candidate target base stations provided in the embodiments of the present disclosure can implement all the method steps implemented in the method embodiments described above, and can achieve the same technical effects. The same parts and beneficial effects of the examples will be described in detail.

在本公开的一些实施例中，还提供了一种计算机可读存储介质，其上存储有程序，该程序被处理器执行时实现以下步骤：向源基站发送对第一MBS业务的支持信息，所述第一MBS业务为待切换终端正在进行的或感兴趣的MBS业务In some embodiments of the present disclosure, there is also provided a computer-readable storage medium on which a program is stored. When the program is executed by the processor, the following steps are implemented: sending support information for the first MBS service to the source base station, The first MBS service is an ongoing or interested MBS service of the terminal to be handed over

该程序被处理器执行时能实现上述应用于候选目标基站侧的多播广播服务业务的切换方法中的所有实现方式，且能达到相同的技术效果，为避免重复，此处不再赘述。When the program is executed by the processor, it can realize all the implementation modes in the switching method of the multicast broadcast service service applied to the candidate target base station side, and can achieve the same technical effect. In order to avoid repetition, it will not be repeated here.

请参照图11，本公开实施例提供的终端110，包括：Referring to FIG. 11, the terminal 110 provided by an embodiment of the present disclosure includes:

偏好信息发送模块111，用于向源基站发送接收第一MBS业务的偏好信息；The preference information sending module 111 is configured to send and receive preference information of the first MBS service to the source base station;

其中，所述第一MBS业务为待切换终端正在进行的或感兴趣的MBS业务，所述偏好信息包括所述第一MBS业务的期望传输方式。Wherein, the first MBS service is an ongoing or interested MBS service of the terminal to be handed over, and the preference information includes an expected transmission mode of the first MBS service.

这里，所述期望传输方式可以是针对所述终端、或针对每个MBS业务或针对每个带宽部分BWP或针对每个同步信号块SSB而设置的。Here, the desired transmission mode may be set for the terminal, or for each MBS service, or for each bandwidth part BWP, or for each synchronization signal block SSB.

可选的，所述终端还包括：Optionally, the terminal further includes:

请参照图12，本公开实施例提供的终端的一种结构示意图，该终端1200包括：处理器1201、收发机1202、存储器1203、用户接口1204和总线接口。Please refer to FIG. 12, which is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure. The terminal 1200 includes a processor 1201, a transceiver 1202, a memory 1203, a user interface 1204, and a bus interface.

在本公开实施例中，终端1200还包括：存储在存储器上1203并可在处理器1201上运行的程序。In the embodiment of the present disclosure, the terminal 1200 further includes: a program that is stored in the memory 1203 and can be run on the processor 1201.

所述处理器1201执行所述程序时实现以下步骤：向源基站发送接收第一MBS业务的偏好信息；The processor 1201 implements the following steps when executing the program: sending and receiving preference information of the first MBS service to the source base station;

其中，所述第一MBS业务为待切换终端正在进行的或感兴趣的MBS业务，所述偏好信息包括所述第一MBS业务的期望传输方式，所述期望传输方式是针对所述终端、或针对每个MBS业务或针对每个带宽部分BWP或针对每个同步信号块SSB而设置的。Wherein, the first MBS service is an MBS service that the terminal to be handed over is ongoing or is of interest, and the preference information includes a desired transmission mode of the first MBS service, and the desired transmission mode is specific to the terminal, or It is set for each MBS service or for each bandwidth part BWP or for each synchronization signal block SSB.

可理解的，本公开实施例中，所述计算机程序被处理器1201执行时可实现上述图6所示的多播广播服务业务的切换方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。It is understandable that, in the embodiment of the present disclosure, when the computer program is executed by the processor 1201, each process of the method for switching the multicast broadcast service shown in FIG. 6 can be realized, and the same technical effect can be achieved. To avoid repetition, I won’t repeat them here.

在图12中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器1201代表的一个或多个处理器和存储器1203代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机1202可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口1204还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。In FIG. 12, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1201 and various circuits of the memory represented by the memory 1203 are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The transceiver 1202 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium. For different user equipment, the user interface 1204 may also be an interface that can externally and internally connect the required equipment. The connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

处理器1201负责管理总线架构和通常的处理，存储器1203可以存储处理器1201在执行操作时所使用的数据。The processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1203 can store data used by the processor 1201 when performing operations.

需要说明的是，该实施例中的终端是与上述图6所示的方法对应的终端，上述各实施例中的实现方式均适用于该终端的实施例中，也能达到相同的技术效果。该终端中，收发机1202与存储器1203，以及收发机1202与处理器1201均可以通过总线接口通讯连接，处理器1201的功能也可以由收发机1202实现，收发机1202的功能也可以由处理器1201实现。在此需要说明的是，本公开实施例提供的上述终端，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。It should be noted that the terminal in this embodiment is a terminal corresponding to the method shown in FIG. 6 above, and the implementation manners in the above embodiments are all applicable to the embodiment of the terminal, and the same technical effect can also be achieved. In this terminal, the transceiver 1202 and the memory 1203, as well as the transceiver 1202 and the processor 1201 can all be connected through a bus interface. The function of the processor 1201 can also be realized by the transceiver 1202, and the function of the transceiver 1202 can also be realized by the processor. 1201 realized. It should be noted here that the above-mentioned terminal provided by the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. Therefore, this embodiment is not the same as the method embodiment. The part and beneficial effects of this will be described in detail.

向源基站发送接收第一MBS业务的偏好信息；Sending and receiving preference information of the first MBS service to the source base station;

该程序被处理器执行时能实现上述应用于终端侧的多播广播服务业务的切换方法中的所有实现方式，且能达到相同的技术效果，为避免重复，此处不再赘述。When the program is executed by the processor, it can realize all the implementation modes in the switching method of the multicast broadcast service service applied to the terminal side, and can achieve the same technical effect. In order to avoid repetition, it will not be repeated here.

本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本公开的范围。A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the present disclosure.

所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

在本申请所提供的实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。In the embodiments provided in this application, it should be understood that the disclosed device and method may be implemented in other ways. For example, the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本公开实施例方案的目的。The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments of the present disclosure.

另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。In addition, the functional units in the various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本公开各个实施例所述的方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present disclosure essentially or the part that contributes to the related technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including several The instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present disclosure. The aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以权利要求的保护范围为准。The above are only specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present disclosure. It should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

A method for switching MBS services of a multicast broadcast service includes:

The source base station obtains support information of at least one candidate target base station for the first MBS service, where the first MBS service is an ongoing or interesting MBS service of the terminal to be handed over;

Selecting, by the source base station, a target base station to be handed over by the terminal to be handed over;

Wherein, the support information for the first MBS service includes at least one of the following information:

Whether the candidate target base station or candidate target cell can transmit or provide the first MBS service;

Whether the candidate target base station or candidate target cell has established a tunnel, session or QoS flow of the first MBS service with the core network;

In the case that the candidate target base station or candidate target cell has not yet established the tunnel, session or QoS flow of the first MBS service with the core network, whether the candidate target base station or candidate target cell can establish the Tunnel, session or QoS flow of the first MBS service;

A transmission mode for the candidate target base station or candidate target cell to send the first MBS service, where the transmission mode is point-to-multipoint PTM and/or point-to-point PTP;

The transmission mode used when the candidate target base station or candidate target cell sends the first MBS service to the terminal to be handed over.

The handover method according to claim 1, wherein before obtaining the support information of at least one candidate target base station for the first MBS service, the method further comprises:

The source base station receives the service attribute information of the first MBS service sent by the terminal to be handed over.

The handover method according to claim 2, wherein the service attribute information includes at least one of the following information: temporary mobility group identifier TMGI, multicast group identifier, multicast address, multicast session context identifier, multicast QoS Flow ID.

The handover method according to claim 1, wherein, before the step of selecting the target base station for handover of the terminal to be handed over, the method further comprises:

The source base station also sends to the candidate target base station a request message for requesting to establish a tunnel or session or QoS flow of the first MBS service.

The handover method according to claim 1, wherein the step of the source base station selecting the target base station to be handed over by the terminal to be handed over comprises:

The source base station selects the target base station for the handover of the terminal to be handed over according to the support information of the at least one candidate target base station for the first MBS service.

The handover method according to claim 1, wherein, before selecting the target base station to be handed over by the terminal to be handed over, the method further comprises:

The source base station receives the preference information for receiving the first MBS service sent by the terminal to be handed over.

The handover method according to claim 1, wherein the step of selecting the target base station for handover of the terminal to be handed over comprises:

The source base station selects the terminal to be handed over according to the support information of the at least one candidate target base station for the first MBS service, the measurement report of the terminal to be handed over, and the preference information for receiving the first MBS service , Wherein the preference information includes an expected transmission mode of the first MBS service, and the expected transmission mode is for the terminal to be handed over, or for each MBS service or for each bandwidth part BWP or for It is set for each sync signal block SSB.

The handover method according to claim 7, wherein, according to the support information of the at least one candidate target base station for the first MBS service, the measurement report of the terminal to be handed over and the preference information for receiving the first MBS service , The step of selecting the target base station to be handed over by the terminal to be handed over includes:

According to the measurement report of the terminal to be handed over, select the first-type base station or cell whose signal quality meets a preset condition from the at least one candidate target base station or cell;

Screening out the second-type base stations or cells that can transmit or provide the first MBS service from the first-type base stations or cells;

From the second type of base stations or cells, a base station or cell whose transmission mode used when sending the first MBS service for the terminal to be handed over matches the preference information is selected as the target base station or cell.

The handover method according to claim 1, wherein, after the step of selecting the target base station to be handed over by the terminal to be handed over, the method further comprises:

When the target base station or target cell has not yet established the tunnel or session or QoS flow of the first MBS service with the core network, send the tunnel or session or session for establishing the first MBS service to the target base station. QoS flow notification message.

The handover method according to claim 1, wherein the step of the source base station obtaining the support information of at least one candidate target base station for the first MBS service comprises:

The source base station sends service attribute information of the first MBS service to the candidate target base station, and receives support information for the first MBS service fed back by the candidate target base station; or,

The source base station determines the support information of the candidate target base station for the first MBS service from the pre-acquired support information of the candidate target base station for the MBS service, wherein the support information of the candidate target base station for the MBS service It is obtained through interaction when the interface between network devices is established or when the configuration of the network device is updated.

A method for switching MBS services includes:

The candidate target base station sends support information for the first MBS service to the source base station, where the first MBS service is an ongoing or interesting MBS service of the terminal to be handed over;

Whether the candidate target base station or candidate target cell has established a tunnel or session or QoS flow of the first MBS service with the core network;

In the case that the candidate target base station or candidate target cell has not yet established the first MBS service tunnel or session or QoS flow with the core network, whether the candidate target base station or candidate target cell can establish the Tunnel or session or QoS flow of the first MBS service;

A transmission mode for the candidate target base station or candidate target cell to send the first MBS service, where the transmission mode includes point-to-multipoint PTM and/or point-to-point PTP;

The method according to claim 11, wherein the step of sending support information for the first MBS service to the source base station comprises:

After receiving the service attribute information of the first MBS service sent by the source base station, the candidate target base station sends support information for the first MBS service to the source base station; or,

The candidate target base station sends its own support information for the MBS service to the source base station when establishing an interface between network devices or when the network device configuration is updated.

The method according to claim 11, wherein the service attribute information includes at least one of the following information: temporary mobile group identifier TMGI, multicast group identifier, multicast address, multicast session context identifier, multicast QoS flow Logo.

The method of claim 11, further comprising:

The candidate target base station receives a request message sent by the source base station for requesting to establish a tunnel or session or QoS flow of the first MBS service;

The candidate target base station establishes a tunnel or session or QoS flow of the first MBS service with the core network according to the request message.

A method for switching MBS services includes:

The terminal sends and receives preference information of the first MBS service to the source base station;

Wherein, the first MBS service is the MBS service being or interested in the terminal to be handed over, the preference information includes the desired transmission mode of the first MBS service, and the desired transmission mode includes point-to-multipoint PTM and / Or point-to-point PTP.

The handover method according to claim 15, further comprising:

The terminal sends the service attribute information of the first MBS service to the source base station.

The handover method according to claim 16, wherein the service attribute information includes at least one of the following information: temporary mobile group identifier TMGI, multicast group identifier, multicast address, multicast session context identifier, multicast QoS Flow ID.

A source base station, including:

A support information acquisition module, configured to acquire support information of at least one candidate target base station for a first MBS service, where the first MBS service is an ongoing or interested MBS service of the terminal to be handed over;

The target base station selection module is used to select the target base station to be handed over by the terminal to be handed over;

The source base station according to claim 18, further comprising:

The service information obtaining module is configured to receive the service attribute information of the first MBS service sent by the terminal to be handed over before obtaining the support information of the at least one candidate target base station for the first MBS service.

The source base station according to claim 18, further comprising:

The service request module is configured to send a request message for requesting the establishment of a tunnel or session or QoS flow of the first MBS service to the candidate target base station before selecting the target base station to be switched by the terminal to be handed over.

The source base station according to claim 18, wherein:

The target base station selection module is further configured to select the target base station for the handover of the terminal to be handed over according to the support information of the at least one candidate target base station for the first MBS service.

The source base station according to claim 18, further comprising:

The preference information obtaining module is configured to receive preference information for receiving the first MBS service sent by the terminal to be switched.

A source base station, including a transceiver and a processor, where,

The transceiver is configured to obtain support information of at least one candidate target base station for a first MBS service, where the first MBS service is an ongoing or interested MBS service of the terminal to be handed over;

The processor is configured to select a target base station to be handed over by the terminal to be handed over;

A source base station, comprising: a processor, a memory, and a program stored on the memory and capable of running on the processor, and when the program is executed by the processor, implements any one of claims 1 to 10 The steps of the method for switching the multicast broadcast service.

A candidate target base station, including:

A support information sending module, configured to send support information for the first MBS service to the source base station, where the first MBS service is an ongoing or interesting MBS service for the terminal to be handed over;

A candidate target base station, including a transceiver and a processor, where:

The transceiver is configured to send support information for a first MBS service to a source base station, where the first MBS service is an ongoing or interesting MBS service of the terminal to be handed over;

A candidate target base station, comprising: a processor, a memory, and a program stored on the memory and capable of running on the processor, and when the program is executed by the processor, it can implement any one of claims 11 to 14 The steps of the method for switching the multicast broadcast service described in the above.

A terminal including:

A preference information sending module, configured to send and receive preference information of the first MBS service to the source base station;

The terminal according to claim 28, further comprising:

The service information sending module is configured to send service attribute information of the first MBS service to the source base station, where the first MBS service is an ongoing or interesting MBS service of the terminal to be handed over.

A terminal including a transceiver and a processor, wherein,

The transceiver is configured to send preference information for receiving the first MBS service to the source base station;

A terminal comprising: a processor, a memory, and a program stored on the memory and capable of running on the processor, and the program is executed by the processor as described in any one of claims 15 to 17 The steps of the method for switching the multicast broadcast service described above.

A method for switching MBS services of a multicast broadcast service includes:

When the first network device establishes an interface between the network devices or when the network device configuration is updated, the second network device obtains the support information of the MBS service by the second network device.

A method for switching MBS services of a multicast broadcast service includes:

When the second network device establishes an interface with the first network device or when the network device configuration is updated, the second network device sends the MBS service support information of the second network device to the first network device.

A first network device, including:

The support information acquisition module is used to acquire the support information of the second network device for the MBS service when the interface between the network devices is established or when the network device configuration is updated.

A second network device, including:

The support information sending module is configured to send the MBS service support information of the second network device to the first network device when the interface with the first network device is established or when the network device configuration is updated.

A first network device includes a transceiver and a processor, wherein,

The transceiver is used to obtain the MBS service support information of the second network device when the interface between the network devices is established or when the network device configuration is updated.

A second network device includes a transceiver and a processor, wherein:

The transceiver is configured to send the MBS service support information of the second network device to the first network device when the interface with the first network device is established or when the network device configuration is updated.

A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, it realizes any one of claims 1 to 17 or any one of claims 32 to 33. The steps of the method for switching the multicast broadcast service described in the above.

A network device configured to perform the steps of the method for switching a multicast broadcast service according to any one of claims 1 to 10, or configured to perform the steps of claim 11 Steps of the method for switching the multicast broadcast service business described in any one of to 14 or are configured to perform the steps of the method for switching the multicast broadcast service business according to claim 32 or 33.

A terminal configured to perform the steps of the method for switching a multicast broadcast service according to any one of claims 15 to 17.

A computer program product that is executed by at least one processor to implement the method for switching a multicast broadcast service according to any one of claims 1 to 17 or any one of claims 32 to 33 .