WO2022068529A1 - Mbs业务的切换方法及相关装置 - Google Patents

Mbs业务的切换方法及相关装置 Download PDF

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Publication number
WO2022068529A1
WO2022068529A1 PCT/CN2021/116622 CN2021116622W WO2022068529A1 WO 2022068529 A1 WO2022068529 A1 WO 2022068529A1 CN 2021116622 W CN2021116622 W CN 2021116622W WO 2022068529 A1 WO2022068529 A1 WO 2022068529A1
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WO
WIPO (PCT)
Prior art keywords
base station
mbs service
mbs
capability information
target base
Prior art date
Application number
PCT/CN2021/116622
Other languages
English (en)
French (fr)
Inventor
雷艺学
Original Assignee
腾讯科技（深圳）有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 腾讯科技（深圳）有限公司 filed Critical 腾讯科技（深圳）有限公司
Priority to EP21874190.8A priority Critical patent/EP4132023A4/en
Priority to KR1020227037724A priority patent/KR20220161431A/ko
Priority to JP2022563194A priority patent/JP7423136B2/ja
Publication of WO2022068529A1 publication Critical patent/WO2022068529A1/zh
Priority to US17/978,060 priority patent/US20230050709A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0007—Control or signalling for completing the hand-off for multicast or broadcast services, e.g. MBMS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00835—Determination of neighbour cell lists
    • H04W36/008357—Determination of target cell based on access point [AP] properties, e.g. AP service capabilities

Definitions

  • the present application relates to the field of computer and communication technologies, and in particular, to the handover of MBS services.
  • MBS Multicast and Broadcast Service
  • MBS has also become a 5G technology and
  • the embodiments of the present application provide a method and a related device for switching an MBS service, so that the switching processing of the MBS service can be implemented at least to a certain extent.
  • a method for switching an MBS service is provided.
  • the method is executed by a serving base station of a user equipment, and includes: acquiring capability information of other base stations for the MBS service, where the capability information is used to indicate whether Support the MBS service; if it is determined to switch the MBS service of the user equipment to the target base station, determine whether the target base station supports the MBS service according to the capability information of the other base stations for the MBS service; if it is determined that the target base station supports the MBS service, then An MBS service handover request is initiated to the target base station, where the MBS service handover request is used to instruct to handover the MBS service of the user equipment to the target base station.
  • a method for switching an MBS service is provided.
  • the method is executed by a user equipment, and includes: processing the MBS service based on a serving base station; and reporting the acquired capability information of other base stations for the MBS service to a For the serving base station, the capability information is used to indicate whether the MBS service is supported; if the serving base station switches the MBS service to a target base station that supports the MBS service based on the MBS service handover request, the target base station processes the MBS service based on the target base station.
  • MBS service wherein the MBS service switching request is sent to the target base station by the serving base station after determining that the target base station supports the MBS service according to the capability information of the target base station.
  • an apparatus for switching an MBS service including: a first obtaining unit configured to obtain capability information of other base stations for the MBS service, where the capability information is used to indicate whether the MBS service is supported; The determining unit is configured to determine whether the target base station supports the MBS service according to the capability information of the other base stations for the MBS service if it is determined to switch the MBS service of the user equipment to the target base station; the first processing unit is configured to determine whether the target base station supports the MBS service; If the target base station supports the MBS service, an MBS service handover request is initiated to the target base station, and the MBS service handover request is used to instruct to handover the MBS service of the user equipment to the target base station.
  • the first obtaining unit obtains capability information of other base stations for the MBS service in at least one of the following ways:
  • the capability information is further used to indicate at least one of the following: whether to support shared tunneling or dedicated tunneling on the N3 interface, and whether to support point-to-point broadcast or point-to-multiple on the air interface Click on the broadcast.
  • the MBS service switching request is also used to indicate the target The tunnel transmission mode adopted by the base station on the N3 interface.
  • the MBS service handover request is also used to indicate the target base station The broadcast mode used on the air interface.
  • the apparatus for switching the MBS service further includes: a sending unit, is configured to send a notification message to the user equipment, where the notification message is used to notify the user equipment to report the capability information of the target base station for the MBS service; the first receiving unit is configured to receive the information reported by the user equipment capability information of the target base station for the MBS service; the determining unit is configured to determine whether the target base station supports the MBS service according to the capability information of the target base station for the MBS service.
  • the apparatus for switching the MBS service further includes: a second receiving unit, configured to receive a cell measurement report reported by the user equipment; the determining unit, configured to The cell measurement report determines to switch the MBS service of the user equipment to the target base station.
  • the apparatus for switching the MBS service further includes: a third receiving unit, configured to receive a signaling message sent by a core network device; the determining unit, configured to The signaling message determines to switch the MBS service of the user equipment to the target base station.
  • the first processing unit is further configured to: before the MBS service switching or during the MBS service switching process, receive a message sent by a core network device for the MBS service Indication information of whether the service performs data forwarding; send the indication information to the target base station.
  • the first processing unit is further configured to: if receiving a policy adjustment instruction for the MBS service sent by the core network device, adjust the policy adjustment instruction based on the policy adjustment instruction
  • the policy adjustment instruction includes at least one of the following: adjusting the tunnel transmission mode adopted at the N3 interface, and adjusting the broadcast mode adopted at the air interface.
  • an apparatus for switching an MBS service including: a second processing unit, configured to process the MBS service based on a serving base station; a reporting unit, configured to reporting capability information to the serving base station, where the capability information is used to indicate whether to support the MBS service; a third processing unit configured to switch the MBS service to a target supporting the MBS service if the serving base station switches the MBS service based on the MBS service switching request.
  • the base station processes the MBS service based on the target base station, wherein the MBS service handover request is sent by the serving base station to the target base station after determining that the target base station supports the MBS service according to the capability information of the target base station base station.
  • the switching apparatus further includes: a second obtaining unit, configured to obtain the target base station for the MBS service when receiving the notification message sent by the serving base station The notification message is used to notify the user equipment to report the capability information of the target base station for the MBS service; the reporting unit is further configured to: report the capability information of the target base station for the MBS service to the a serving base station, for the serving base station to determine whether the target base station supports the MBS service.
  • the reporting unit is further configured to: receive system information broadcast by the other base station, where the system information indicates in an implicit or explicit manner that the other base station The capability information of the MBS service is obtained; and the capability information of the other base station for the MBS service is acquired according to the system information.
  • the switching apparatus further includes: a negotiation unit configured to perform communication negotiation with the application function entity corresponding to the MBS service, so as to determine the switching policy information of the MBS service,
  • the handover policy information is configured by the application function entity to the serving base station through a core network device before the MBS service handover or during the MBS service handover process.
  • the handover policy information includes at least one of the following: whether data forwarding processing is performed between the base stations before and after the handover, whether the base station after the handover uses a shared tunnel transmission mechanism or a dedicated tunnel transmission mechanism on the N3 interface when processing the MBS service, and after the handover When processing the MBS service, the base station adopts point-to-point broadcast or point-to-multipoint broadcast on the N3 interface.
  • the reporting unit is configured to: report the acquired capability information of all other base stations for the MBS service to the serving base station.
  • the reporting unit is configured to: report the acquired capability information of the designated base station in the other base stations for the MBS service to the serving base station, and the designated base station It includes at least one of the following: a base station whose signal strength is greater than or equal to a set value among the other base stations, and a base station that supports the MBS service among the other base stations.
  • a computer-readable medium on which a computer program is stored, and when the computer program is executed by a processor, implements the MBS service switching method described in the foregoing embodiments.
  • an electronic device including: one or more processors; and a storage device for storing one or more programs, when the one or more programs are stored by the one or more programs When executed by multiple processors, the one or more processors are made to implement the MBS service switching method described in the foregoing embodiments.
  • a computer program product or computer program where the computer program product or computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium.
  • the processor of the computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device executes the MBS service switching method provided in the foregoing various optional embodiments.
  • an MBS service handover request is initiated to the target base station to switch the MBS service of the user equipment to the target base station, so that whether the target base station supports the target base station can be determined based on the capability information of the base station MBS service, and thus can avoid blindly initiating a service handover request to a base station that does not support MBS service, resulting in interruption of MBS service and waste of signaling resources, and realizing the support of 5G system for MBS service handover.
  • FIG. 1 shows a schematic diagram of a data transmission flow in a unicast communication system and a multicast communication system
  • FIG. 2 shows a schematic diagram of an application scenario to which the technical solutions of the embodiments of the present application can be applied;
  • FIG. 3 shows a flowchart of a method for switching an MBS service according to an embodiment of the present application
  • FIG. 4 shows a flowchart of a method for switching an MBS service according to another embodiment of the present application
  • FIG. 5 shows a schematic diagram of a handover process of an MBS service according to an embodiment of the present application
  • FIG. 6 shows a schematic diagram of an enhanced ANR mechanism according to an embodiment of the present application.
  • FIG. 7 shows a flowchart of a method for switching an MBS service according to an embodiment of the present application
  • FIG. 8 shows a flowchart of a method for switching an MBS service according to another embodiment of the present application.
  • FIG. 9 shows a block diagram of an apparatus for switching an MBS service according to an embodiment of the present application.
  • FIG. 10 shows a block diagram of an apparatus for switching an MBS service according to another embodiment of the present application.
  • FIG. 11 shows a schematic structural diagram of a computer system suitable for implementing the electronic device according to the embodiment of the present application.
  • the wireless communication systems of 2G (second generation mobile communication technology), 3G (third generation mobile communication technology) and 4G (fourth generation mobile communication technology) support MBMS (Multimedia Broadcast and Multicast Service), this Services are divided into two types: Broadcast (broadcast) and Multicast (multicast).
  • Broadcast Broadcast
  • Multicast Multicast
  • 2G and 3G systems support multicast services
  • 4G systems do not support them in standards
  • 2G, 3G and 4G systems all support broadcast services.
  • unicast is the most common one-to-one communication. Its advantage is that the sender can transmit different content to different receivers, but if the sender needs to transmit the same content to multiple receivers, it needs to end-to-end End-to-end transmission of multiple copies of the same data is relatively inefficient. Specifically, as shown in Figure 1, when a unicast source (ie, sender) sends data to multiple receivers in a unicast manner, it needs to transmit multiple copies of the same data in an end-to-end manner (different lines in Figure 1). types represent different data streams).
  • Multicast also known as “multicast” is when a sender transmits the same content to multiple receivers.
  • Online video conferencing and online video-on-demand are especially suitable for multicast, because if unicast is used, there will be as many transmissions as there are receivers, which is obviously extremely inefficient; ,
  • the broadcast mode of all sending although the data can be transmitted at one time, it cannot achieve the purpose of distinguishing specific data recipients. It can be seen that, by using the multicast method, the same data can be sent to multiple receivers at one time, and the purpose of transmitting data only to a specific object can be achieved.
  • a multicast source ie, a sender
  • Broadcasting also transmits the same content to multiple recipients, but does not select the recipients during transmission, so there may be unnecessary devices that also transmit data, resulting in a waste of network resources.
  • some receivers may not be “interested” in the content of the broadcast, so after receiving the content of the broadcast, they have to discard the received data packets, which also results in a waste of terminal resources.
  • the fundamental difference between the broadcast service and the multicast service is that the UE (User Equipment, user equipment) of the broadcast service in the system can participate in the broadcast service without signing a contract, while the UE of the multicast service must be signed and authenticated before participating.
  • the UE User Equipment, user equipment
  • the UE joins the multicast group of the corresponding service through an Internet Protocol (Internet Protocol, IP) multicast address.
  • IP Internet Protocol
  • the broadcast service is distinguished by different areas, so that there is only one broadcast service in a certain area, and this broadcast service can transmit different services in different time periods.
  • base station 1 and base station 2 are adjacent base stations, and base station 1 and base station are adjacent to each other. 2 can be connected through the Xn interface.
  • base station 1 and the base station 2 may not be connected.
  • base station 1 and base station 2 can be respectively connected to AMF (Access and Mobility Management Function, Access and Mobility Management Function) entities through N2 interface, and can be respectively connected to UPF (User Plane Function, User plane function) entity is connected.
  • SMF Session Management Function
  • PCF Policy Control Function, policy control function
  • AF Application Function, application function
  • UDM Unified Data Management, unified data management
  • the system architecture does not show other network elements in the network, such as OAM (Operation Administration and Maintenance) entities, NEF (Network Exposure Function) entities, etc., but in practical applications, it may be necessary to use to these network elements.
  • the serving base station of the user equipment 201 is base station 1, and base station 1 processes MBS services.
  • Base station 1 can obtain the capability information of base station 2 for MBS services, such as whether base station 2 supports MBS services, base station 2 supports shared tunnel transmission or dedicated tunnel transmission on the N3 interface, and base station 2 supports point-to-point broadcast or point-to-multipoint transmission on the air interface radio, etc.
  • the base station 1 can obtain the information from the base station 2 through the Xn interface, or can obtain the information through the reporting of the user equipment (such as the user equipment 201 shown in FIG. 2, or other user equipment not shown), Alternatively, the information can also be obtained based on the configuration of the OAM entity.
  • the user equipment 201 will perform cell measurement during the moving process and report the cell measurement report to the base station 1. If the base station 1 determines that the MBS service of the user equipment 201 needs to be transferred due to the movement of the user equipment 201 (the MBS service of the user equipment 201 can be The service processed by the MBS transmission group joined by the user equipment 201) is switched to the base station 2, then it will first determine whether the base station 2 supports the MBS service according to the capability information of the base station 2. If the base station 2 supports the MBS service, the base station 1 can report to the base station 2. An MBS service switching request is initiated to switch the MBS service of the user equipment 201 to the base station 2, so that the user equipment 201 can continue to process the MBS service based on the base station 2.
  • communication negotiation may also be performed between the user equipment 201 and the AF entity, so as to determine whether data forwarding treatment needs to be performed according to the MBS service of the user equipment 201, and it may be determined whether data forwarding treatment is required during handover
  • the base station 2 adopts shared tunnel transmission or dedicated tunnel transmission on the N3 interface, and point-to-point broadcast or point-to-multipoint broadcast on the air interface, etc., and then the AF entity configures the determined handover policy information through the AMF entity or the SMF entity.
  • the base station 1, and the base station 1 adds the handover strategy information to the processing related to the MBS service handover according to the capability information of the base station 2.
  • the AMF entity or the SMF entity may be referred to as a core network device.
  • the switching processing can be performed directly according to the switching strategy; if data forwarding processing is required (for example, the MBS service is software download or upgrade tasks, etc.), data forwarding processing needs to be performed between base station 1 and base station 2 to ensure the data integrity of the MBS service.
  • data forwarding processing is required (for example, the MBS service is software download or upgrade tasks, etc.)
  • data forwarding processing needs to be performed between base station 1 and base station 2 to ensure the data integrity of the MBS service.
  • the primary factor affecting user experience is to receive real-time data as soon as possible on the base station after handover, and data forwarding and recovery before handover or during handover does not matter. important. In this case, not performing data forwarding can save network resources and speed up the handover process.
  • FIG. 3 shows a flowchart of a method for switching an MBS service according to an embodiment of the present application.
  • the method for switching an MBS service may be performed by a base station, which may be a serving base station for providing services to user equipment.
  • the MBS service switching method includes at least steps S310 to S330, and the details are as follows:
  • step S310 the capability information of other base stations for the MBS service is acquired, and the capability information is used to indicate whether the MBS service is supported.
  • the other base station may be an adjacent base station where the serving base station of the user equipment is located.
  • the serving base station acquiring the capability information of the other base station for the MBS service may be receiving the capability information of the other base station for the MBS service reported by the user equipment.
  • the user equipment may receive the system information broadcast by the adjacent base station of the current serving base station, and obtain the capability information of the adjacent base station for the MBS service through the system information.
  • the serving base station acquiring the capability information of the other base station for the MBS service may be acquiring the capability information of the other base station for the MBS service through a communication link established with the other base station. That is, the serving base station can establish a communication link with the adjacent base station through the Xn interface, and then obtain the capability information of other base stations for the MBS service.
  • the serving base station acquiring capability information of other base stations for the MBS service may be acquiring capability information for the MBS service of other base stations configured by the operation, maintenance and management entity.
  • the operation maintenance management entity may preconfigure the capability information of other base stations for the MBS service to the serving base station.
  • the serving base station may acquire capability information of other base stations for the MBS service through one or more of the foregoing manners.
  • the aforementioned capability information in addition to indicating whether the MBS service is supported, can also indicate at least one of the following: whether to support the shared tunnel transmission mode or the dedicated tunnel transmission mode on the N3 interface, and to support point-to-point on the air interface Broadcasting is also point-to-multipoint broadcasting.
  • the capability information can be used to select the handover strategy information of the target base station when the MBS service is switched. For example, if the target base station supports the shared tunnel transmission mode on the N3 interface, after the MBS service is switched to the target base station, the target base station's N3 The interface adopts the shared tunnel transmission mode.
  • step S320 if it is determined that the MBS service of the user equipment is to be handed over to the target base station, it is determined whether the target base station supports the MBS service according to the capability information of other base stations for the MBS service.
  • the cell measurement report reported by the user equipment may be received, and then, according to the cell measurement report, it is determined whether to switch the MBS service of the user equipment to the target base station, that is, determine whether to switch the MBS service of the user equipment to the target base station.
  • the manner may be to determine, according to the cell measurement report, to switch the MBS service of the user equipment to the target base station.
  • the technical solution of this embodiment is to trigger the handover based on the movement of the user equipment.
  • the serving base station determines according to the cell measurement report reported by the user equipment that the signal strength of a neighboring base station measured by the user equipment is getting larger and larger, then it can be determined The user equipment is about to move into the coverage area of the base station, and then the handover can be triggered.
  • a signaling message sent by a core network device may be received, and whether to switch the MBS service of the user equipment to the target base station is determined according to the signaling message, that is, it is determined to switch the MBS service of the user equipment to the target base station
  • the method may be to determine, according to the signaling message, to switch the MBS service of the user equipment to the target base station.
  • the core network equipment can determine whether the MBS service of the user equipment needs to be handed over from the serving base station to another base station according to information such as the load of the serving base station and the session parameters corresponding to the service flow. order message.
  • the core network device in this embodiment may be AMF or SMF.
  • the serving base station may send a notification message to the user equipment, where the notification message is used to notify
  • the user equipment reports the capability information of the target base station for the MBS service, and then the user equipment can obtain the capability information of the target base station for the MBS service, for example, by receiving the system information broadcast by the target base station to obtain the target base station.
  • the capability information of the target base station for the MBS service is reported to the serving base station, so that the serving base station determines whether the target base station supports the MBS service according to the capability information of the target base station for the MBS service.
  • step S330 if it is determined that the target base station supports the MBS service, an MBS service handover request is initiated to the target base station, and the MBS service handover request is used to instruct the MBS service of the user equipment to be handed over to the target base station.
  • the serving base station can also indicate the tunnel transmission mode adopted by the target base station on the N3 interface through the MBS service handover request, That is, whether to use the shared tunnel transmission method or the dedicated tunnel transmission method.
  • the serving base station can also indicate the broadcast mode adopted by the target base station on the air interface through the MBS service handover request, that is, use Point-to-point broadcasting is still point-to-multipoint broadcasting.
  • the serving base station may send the indication information to the target base station to indicate whether the target base station needs to perform data forwarding. data forwarding.
  • the serving base station may add the indication information to the MBS service handover request and send it to the target base station.
  • the serving base station may receive the indication information sent by the core network device before the MBS service switching or during the MBS service switching process.
  • the indication information can be configured on the core network device and the base station as a parameter of the UE context.
  • the indication information will be transferred to the target base station, that is, the new serving base station, together with the context.
  • the serving base station may adjust the configuration message for the MBS service based on the policy adjustment instruction, and the policy adjustment instruction includes the following At least one: adjust the tunnel transmission mode adopted on the N3 interface, and adjust the broadcast mode adopted on the air interface. For example, the serving base station adopts the shared tunnel transmission mode on the N3 interface for the MBS service. If the core network equipment needs to adjust the tunnel transmission mode adopted by the serving base station on the N3 interface, for example, the shared tunnel transmission mode is adjusted to the dedicated tunnel transmission mode. Then, a policy adjustment instruction may be sent to the serving base station.
  • FIG. 3 illustrates the MBS service switching method of the embodiment of the present application from the perspective of the base station.
  • the following describes the MBS service switching method of the embodiment of the present application in detail with reference to FIG. 4 from the perspective of the user equipment:
  • FIG. 4 shows a flowchart of a method for switching an MBS service according to an embodiment of the present application, and the method for switching an MBS service may be performed by a user equipment.
  • the MBS service switching method includes at least steps S410 to S430, and the details are as follows:
  • step S410 the MBS service is processed based on the serving base station.
  • the process of processing the MBS service by the user equipment based on the serving base station may be to join a certain MBS group to receive MBS service data sent by the serving base station, for example, the MBS service data may be multimedia data (such as live video streaming data, news data, etc.), software download package data, software update package data, etc.
  • MBS service data may be multimedia data (such as live video streaming data, news data, etc.), software download package data, software update package data, etc.
  • step S420 the acquired capability information of other base stations for the MBS service is reported to the serving base station, where the capability information is used to indicate whether the MBS service is supported.
  • each base station can implicitly or explicitly indicate capability information for MBS services through system information, and then the user equipment can acquire the capabilities of each base station for MBS services by receiving system information broadcast by each base station information.
  • the user equipment may report the acquired capability information of all other base stations for the MBS service to the serving base station.
  • the user equipment may report the acquired capability information of the designated base station in other base stations for the MBS service to the serving base station, where the designated base station includes at least one of the following: the signal strength in the other base station is greater than or equal to the set The base station with a fixed value and the base station supporting the MBS service among other base stations. That is, in this embodiment, the user equipment may first perform screening according to the information of the base stations, and then report the filtered capability information of the designated base station for the MBS service to the serving base station.
  • step S430 if the serving base station switches the MBS service to the target base station supporting the MBS service based on the MBS service handover request, the MBS service is processed based on the target base station, wherein the MBS service handover request is the serving base station Sent to the target base station after it is determined according to the capability information of the target base station that the target base station supports the MBS service.
  • the serving base station may determine whether the target base station supports the MBS service based on the acquired capability information of each base station for the MBS service. If the capability information of each base station for the MBS service acquired by the serving base station does not include The capability information of the target base station for the MBS service, the notification message may be sent to the user equipment, and the notification message is used to notify the user equipment to report the capability information of the target base station for the MBS service. The capability information of the MBS service, and then the capability information of the target base station for the MBS service is reported to the serving base station, so that the serving base station can determine whether the target base station supports the MBS service.
  • the user equipment may also conduct communication and negotiation with the application function entity corresponding to the MBS service to determine the handover policy information of the MBS service, and then the AF entity can use the AF entity before the MBS service handover or during the MBS service handover process.
  • the handover policy information is configured to the serving base station through the core network device.
  • the AF entity may directly send the handover policy information to the PCF entity, or the AF entity may send the handover policy information to the PCF entity through the NEF entity, and then the PCF entity sends the handover policy information to the AMF entity and/or the SMF entity , and configured to the serving base station through the AMF entity or the SMF entity.
  • the above handover policy information may include at least one of the following: whether data forwarding processing is performed between the base stations before and after the handover, whether the base station after the handover uses a shared tunnel transmission mechanism on the N3 interface when processing the MBS service The dedicated tunnel transmission mechanism and whether the switched base station uses point-to-point broadcast or point-to-multipoint broadcast on the N3 interface when processing MBS services.
  • whether data forwarding processing is performed between base stations before and after handover can be determined according to the type of MBS service of the user equipment. For example, if the type of MBS service belongs to live video service, real-time interactive service, etc., the requirement for packet loss is not high. If the MBS service type belongs to the download/update service of software package, the update service of map, the update service of planning path and other services that require high packet loss, then data forwarding can be performed. processing to ensure the data integrity of the MBS service.
  • the technical solutions of the embodiments of the present application have been described above from the perspectives of base stations and user equipment respectively, that is, the technical solutions of the embodiments of the present application mainly propose a wireless network handover mechanism for 5G MBS services, specifically by introducing a new MBS-related characteristic parameters to the interface between the 5G air interface and the base station, and the interface between the base station and the core network, to realize the ability to actively determine whether the potential target base station supports 5G MBS services during the handover process.
  • communication negotiation between the UE and the AF entity may also be introduced in the handover process, so as to select a reasonable handover mechanism according to the requirements of the service on packet loss characteristics, etc., to realize the MBS service handover in the 5G network. effective support.
  • the process of switching the MBS service of the UE is essentially to switch the 5G data radio bearer of the air interface and the tunnel of the N3 interface of the base station, so that the service data from the AF entity to the UE can be switched.
  • the air interface between the UE and the base station 1 is switched to the air interface between the UE and the base station 2
  • the N3 interface between the base station 1 and the UPF entity is switched to the base station 2 and the UPF entity.
  • an enhanced ANR Automatic Neighbor Relation
  • the base station can communicate between the base stations through the UE report (report) and/or between the base stations.
  • the capability information includes: whether the base station supports MBS services; whether the base station supports the shared tunnel transmission mechanism on the N3 interface, whether it supports dedicated tunnels Mechanism; whether the base station supports point-to-multipoint broadcast on the air interface, whether it supports point-to-point broadcast, etc.
  • the enhanced ANR mechanism in this embodiment of the present application may include some or all of the mechanisms in 601 , 602 , and 603 .
  • 601 shown in Fig. 6 is that the UE measures and obtains the capability information of the neighboring base station for the MBS service, and then reports it to the serving base station, and then adds/updates the maintained ANR data by the serving base station.
  • 602 shown in FIG. 6 is that each base station obtains capability information of neighboring base stations for MBS service from OAM entity/network side equipment, and each base station adds/updates and maintains ANR data, and the network side equipment may be core network equipment.
  • 603 shown in FIG. 6 is that the base stations acquire the capability information of each neighboring base station for the MBS service through communication, and the ANR data added/updated and maintained by each base station.
  • the user equipment and the base station need to support corresponding protocols.
  • the supporting base station can implicitly or explicitly broadcast the aforementioned capability information for MBS services through system information;
  • the capability information of the service informs the serving base station to assist the serving base station in making a decision.
  • the enhanced ANR mechanism in the above embodiments of the present application can enable the serving base station to predict in advance whether the target base station supports 5G MBS, and what kind of MBS transmission mode is supported on the air interface and the N3 interface respectively, and then configure the corresponding handover policy information.
  • the UE and the AF entity may conduct communication negotiation, so as to select a reasonable handover strategy according to the requirements of the MBS service on packet loss characteristics and the acceptable handover time, etc.
  • Effective support for MBS service handover in the network Specifically, when the types of MBS services are different, the requirements for data forwarding processing are different. Therefore, in order to save network resources, for 5G MBS services that do not require data forwarding, after the interaction between the UE and the AF entity is confirmed, the The AF entity notifies the 5G core network equipment that data forwarding is not required for the MBS service, thereby simplifying the data forwarding process between the source base station (the serving base station of the user equipment before handover) and the target base station. In some cases, the core networks corresponding to the source base station and the target base station may be the same.
  • the AF entity may configure a policy for whether data forwarding is required for each MBS service. For example, the AF entity may configure a corresponding policy for the AMF entity, the SMF entity and the UE through the PCF entity, and may configure update the strategy. Meanwhile, the specific configuration process may occur before the MBS service switching, or may occur during the switching process.
  • FIG. 7 shows a flowchart of a method for switching an MBS service according to an embodiment of the present application, which specifically includes the following steps:
  • Step S701 the information of the target base station is obtained through the enhanced ANR mechanism.
  • Step S702 the UE performs communication negotiation with the AF entity to determine whether the MBS service requires data forwarding processing. If yes, go to step S704; otherwise, go to step S703.
  • the MBS service belongs to services that do not require high packet loss, such as live video services, real-time interactive services, etc.
  • data forwarding processing may not be performed; and if the MBS service belongs to the download/update of software packages
  • services that require high packet loss such as services, map update services, and route planning update services
  • data forwarding can be performed to ensure the data integrity of MBS services.
  • Step S703 executing the MBS handover process without data forwarding.
  • Step S704 executing the MBS handover process with data forwarding.
  • the core network device or the source base station can be based on the tunnel transmission mode (shared tunnel transmission mode, dedicated Tunnel transmission mode, etc.) and broadcast mode (point-to-point mode, point-to-multipoint mode, etc.) supported on the air interface to determine the switching strategy, such as what MBS transmission mode is supported on the air interface and the N3 interface after switching.
  • tunnel transmission mode shared tunnel transmission mode, dedicated Tunnel transmission mode, etc.
  • broadcast mode point-to-point mode, point-to-multipoint mode, etc.
  • the handover process of the MBS service may be triggered by the mobility of the user equipment, or may be triggered by non-mobility reasons such as network side equipment, and the handover triggered by non-mobility reasons such as network side equipment Including: network load balancing strategy, session parameter change corresponding to service flow, etc.
  • non-mobility reasons such as network side equipment
  • network side equipment Including: network load balancing strategy, session parameter change corresponding to service flow, etc.
  • step S801 the UE establishes an MBS session at the source base station to process the MBS service.
  • an ANR mechanism can be performed between the base stations, between the OAM entity and the base station, and between the UE and the base station, so that the adjacent base stations can be obtained between the base stations.
  • the capability information for the MBS service including but not limited to: whether the base station supports the MBS service; whether the base station supports the shared tunnel transmission mechanism on the N3 interface, whether it supports the dedicated tunnel mechanism; whether the base station supports point-to-multipoint broadcasting on the air interface, Whether to support point-to-point broadcasting, etc.
  • Step S802 the source base station obtains the ANR execution result, that is, the source base station learns whether the target base station supports the MBS service, supports the dedicated tunnel transmission mode or the shared tunnel transmission mode on the N3 interface, and supports PTP (Point To Point, point-to-point) or PTMP on the air interface (Point-to-Multipoint, point-to-multipoint).
  • the source base station learns whether the target base station supports the MBS service, supports the dedicated tunnel transmission mode or the shared tunnel transmission mode on the N3 interface, and supports PTP (Point To Point, point-to-point) or PTMP on the air interface (Point-to-Multipoint, point-to-multipoint).
  • Step S803 before the handover occurs, the UE and the AF entity perform a communication protocol to determine the handover policy information, such as whether data forwarding is required during the handover process, whether to use the shared tunnel transmission mode or the dedicated tunnel transmission mode on the N3 interface after the handover, and after the handover.
  • Point-to-multipoint broadcast or point-to-point broadcast is used in the air interface.
  • Step S804 the UE moves, and discovers the neighbor base station through the measurement mechanism.
  • Step S805 the UE reports a measurement report to the serving base station (that is, the source base station), and the measurement report may include the PCI (Physical Cell Identifier, physical cell identifier) of the target base station.
  • PCI Physical Cell Identifier, physical cell identifier
  • the serving base station if the serving base station has learned the capability information of all neighboring base stations for the MBS service through the ANR mechanism, the information such as whether the neighboring base station supports the MBS service can be determined according to the PCI reported by the UE. If the serving base station has not learned the capability information of all neighboring base stations for MBS services through the ANR mechanism, the ANR mechanism can be activated, for example, the UE can be notified to obtain it from the system information broadcast of the neighboring base stations or other methods, and then reported to the serving base station.
  • the UE may report the information of some or all cells to the serving base station to the serving base station, or after screening (for example, sorting according to the signal strength of the neighboring base stations or screening according to whether the neighboring base stations support MBS services, etc.) Then report it to the serving base station.
  • screening for example, sorting according to the signal strength of the neighboring base stations or screening according to whether the neighboring base stations support MBS services, etc.
  • Step S806 the source base station determines the support status of the MBS service of the target base station according to the ANR information.
  • Step S807 if the source base station determines that the target base station supports the MBS service, the source base station initiates an MBS service handover request, and the MBS service handover request may carry the indication information of the MBS handover, including whether to perform data forwarding, and use the shared tunnel transmission on the N3 interface after the handover
  • the mode is still the dedicated tunnel transmission mode, and the point-to-multipoint broadcast or the point-to-point broadcast method is used on the air interface after switching.
  • the indication information of MBS handover carried in the MBS service handover request may be determined by the source base station, or may also be indicated to the source base station by the AMF entity.
  • Step S808 the target base station determines the handover policy information, including whether to perform data forwarding, whether to use the shared tunnel transmission mode or the dedicated tunnel transmission mode on the N3 interface after the handover, and whether to use the point-to-multipoint broadcast or the point-to-point broadcast method on the air interface after the handover, etc. .
  • the target base station can actively generate a corresponding configuration message, and can make adjustments later according to the policy adjustment instruction sent by the core network device.
  • Step S809 the target base station sends a handover response to the source base station.
  • the technical solutions of the above embodiments of the present application introduce new MBS-related characteristic parameters into the 5G air interface and the interface between the base station and the interface between the base station and the core network, so as to actively determine whether the potential target base station supports 5G MBS services during the handover process. related capabilities.
  • communication negotiation between the UE and the AF entity may also be introduced in the handover process, so as to select a reasonable handover mechanism according to the requirements of the service on packet loss characteristics, etc., so as to avoid indiscriminate data forwarding of the service. Waste of resources, to achieve effective support for MBS service handover in 5G network.
  • FIG. 9 shows a block diagram of an apparatus for switching MBS services according to an embodiment of the present application.
  • the apparatus for switching MBS services may be set in a base station, and the base station may be a serving base station for providing services to user equipment.
  • an apparatus 900 for switching an MBS service includes: a first acquiring unit 902 , a determining unit 904 and a first processing unit 906 .
  • the first obtaining unit 902 obtains capability information of other base stations for the MBS service in at least one of the following ways:
  • the capability information is further used to indicate at least one of the following: whether to support shared tunneling or dedicated tunneling on the N3 interface, and whether to support point-to-point broadcast or point-to-multiple on the air interface Click on the broadcast.
  • the MBS service switching request is also used to indicate the target The tunnel transmission mode adopted by the base station on the N3 interface.
  • the MBS service handover request is further used to indicate that the target base station is in the air The broadcast mode used by the interface.
  • the apparatus 900 for switching the MBS service further includes: a sending unit is configured to send a notification message to the user equipment, where the notification message is used to notify the user equipment to report the capability information of the target base station for the MBS service; the first receiving unit is configured to receive the information reported by the user equipment. capability information of the target base station for the MBS service; the determining unit is configured to determine whether the target base station supports the MBS service according to the capability information of the target base station for the MBS service.
  • the apparatus 900 for switching the MBS service further includes: a second receiving unit, configured to receive a cell measurement report reported by the user equipment; the determining unit, configured to The cell measurement report determines that the MBS service of the user equipment is to be handed over to the target base station.
  • the apparatus 900 for switching the MBS service further includes: a third receiving unit, configured to receive a signaling message sent by a core network device; the determining unit, configured to The signaling message determines to switch the MBS service of the user equipment to the target base station.
  • the first processing unit 906 is further configured to: before the MBS service switching or during the MBS service switching process, receive a message for the MBS service sent by the core network device. Indication information of whether to perform data forwarding; send the indication information to the target base station.
  • the first processing unit 906 is further configured to: if receiving a policy adjustment instruction for the MBS service sent by the core network device, adjust the policy adjustment instruction for the MBS service based on the policy adjustment instruction
  • the configuration message of the MBS service, the policy adjustment instruction includes at least one of the following: adjusting the tunnel transmission mode adopted at the N3 interface, and adjusting the broadcast mode adopted at the air interface.
  • FIG. 10 shows a block diagram of an apparatus for switching an MBS service according to an embodiment of the present application, and the apparatus for switching an MBS service may be set in a user equipment.
  • an apparatus 1000 for switching an MBS service includes: a second processing unit 1002 , a reporting unit 1004 and a third processing unit 1006 .
  • the second processing unit 1002 is configured to process the MBS service based on the serving base station; the reporting unit 1004 is configured to report the acquired capability information of other base stations for the MBS service to the serving base station, where the capability information is used to indicate whether MBS is supported.
  • the third processing unit 1006 is configured to process the MBS service based on the target base station if the serving base station switches the MBS service to a target base station supporting the MBS service based on the MBS service switching request, wherein the MBS service The service switching request is sent to the target base station by the serving base station after determining that the target base station supports the MBS service according to the capability information of the target base station.
  • the switching apparatus 1000 further includes: a second obtaining unit, configured to obtain, when receiving a notification message sent by the serving base station, the target base station for the MBS The capability information of the service, the notification message is used to notify the user equipment to report the capability information of the target base station for the MBS service; the reporting unit 1004 is further configured to: report the capability information of the target base station for the MBS service to the the serving base station, for the serving base station to determine whether the target base station supports the MBS service.
  • the reporting unit 1004 is further configured to: receive system information broadcast by the other base station, where the system information instructs the other base station to target The capability information of the MBS service; and the capability information of the other base station for the MBS service is acquired according to the system information.
  • the switching apparatus 1000 further includes: a negotiation unit configured to perform communication negotiation with an application function entity corresponding to the MBS service, so as to determine the switching policy information of the MBS service , the handover policy information is configured by the application function entity to the serving base station through a core network device before the MBS service handover or during the MBS service handover process.
  • the handover policy information includes at least one of the following: whether data forwarding processing is performed between the base stations before and after the handover, whether the base station after the handover uses a shared tunnel transmission mechanism or a dedicated tunnel transmission mechanism on the N3 interface when processing the MBS service, and after the handover When processing the MBS service, the base station adopts point-to-point broadcast or point-to-multipoint broadcast on the N3 interface.
  • the reporting unit 1004 is configured to: report the acquired capability information of all other base stations for the MBS service to the serving base station.
  • the reporting unit 1004 is configured to: report the acquired capability information of a designated base station in the other base stations for the MBS service to the serving base station, and the designated base station
  • the base station includes at least one of the following: a base station whose signal strength is greater than or equal to a set value among the other base stations, and a base station that supports the MBS service among the other base stations.
  • FIG. 11 shows a schematic structural diagram of a computer system suitable for implementing the electronic device according to the embodiment of the present application.
  • the computer system 1100 includes a central processing unit (Central Processing Unit, CPU) 1101, which can be loaded into a random device according to a program stored in a read-only memory (Read-Only Memory, ROM) 1102 or from a storage part 1108
  • the programs in the memory (Random Access Memory, RAM) 1103 are accessed to perform various appropriate actions and processes, for example, the methods described in the above embodiments are performed.
  • RAM Random Access Memory
  • various programs and data required for system operation are also stored.
  • the CPU 1101, the ROM 1102, and the RAM 1103 are connected to each other through a bus 1104.
  • An Input/Output (I/O) interface 1105 is also connected to the bus 1104 .
  • the following components are connected to the I/O interface 1105: an input section 1106 including a keyboard, a mouse, etc.; an output section 1107 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc. ; a storage part 1108 including a hard disk and the like; and a communication part 1109 including a network interface card such as a LAN (Local Area Network) card, a modem, and the like.
  • the communication section 1109 performs communication processing via a network such as the Internet.
  • Drivers 1110 are also connected to I/O interface 1105 as needed.
  • a removable medium 1111 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is mounted on the drive 1110 as needed so that a computer program read therefrom is installed into the storage section 1108 as needed.
  • embodiments of the present application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program comprising a computer program for performing the method illustrated in the flowchart.
  • the computer program may be downloaded and installed from the network via the communication portion 1109, and/or installed from the removable medium 1111.
  • CPU central processing unit
  • the computer-readable medium shown in the embodiments of the present application may be a computer-readable signal medium or a computer-readable storage medium, or any combination of the above two.
  • the computer readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or a combination of any of the above.
  • Computer readable storage media may include, but are not limited to, electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), erasable Erasable Programmable Read Only Memory (EPROM), flash memory, optical fiber, portable Compact Disc Read-Only Memory (CD-ROM), optical storage device, magnetic storage device, or any suitable of the above The combination.
  • a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.
  • a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying a computer-readable computer program therein.
  • Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing.
  • a computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device .
  • a computer program embodied on a computer-readable medium may be transmitted using any suitable medium, including, but not limited to, wireless, wired, etc., or any suitable combination of the foregoing.
  • each block in the flowchart or block diagram may represent a module, program segment, or part of code, and the above-mentioned module, program segment, or part of code contains one or more executables for realizing the specified logical function instruction.
  • the functions noted in the blocks may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.
  • the units involved in the embodiments of the present application may be implemented in software or hardware, and the described units may also be provided in a processor. Among them, the names of these units do not constitute a limitation on the unit itself under certain circumstances.
  • the present application also provides a computer-readable medium.
  • the computer-readable medium may be included in the electronic device described in the above embodiments; it may also exist alone without being assembled into the electronic device. middle.
  • the above-mentioned computer-readable medium carries one or more programs, and when the above-mentioned one or more programs are executed by an electronic device, enables the electronic device to implement the methods described in the above-mentioned embodiments.
  • the exemplary embodiments described herein may be implemented by software, or may be implemented by software combined with necessary hardware. Therefore, the technical solutions according to the embodiments of the present application may be embodied in the form of software products, and the software products may be stored in a non-volatile storage medium (which may be CD-ROM, U disk, mobile hard disk, etc.) or on the network , which includes several instructions to cause a computing device (which may be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present application.
  • a computing device which may be a personal computer, a server, a touch terminal, or a network device, etc.

Abstract

本申请的实施例提供了一种MBS业务的切换方法、装置、计算机可读介质及电子设备。该MBS业务的切换方法包括：获取其它基站针对MBS业务的能力信息，所述能力信息用于指示是否支持MBS业务；若确定将用户设备的MBS业务切换至目标基站，则根据所述其它基站针对MBS业务的能力信息确定所述目标基站是否支持MBS业务；若确定所述目标基站支持MBS业务，则向所述目标基站发起MBS业务切换请求，所述MBS业务切换请求用于指示将所述用户设备的MBS业务切换至所述目标基站。本申请实施例的技术方案可以实现MBS业务的切换处理。

Description

MBS业务的切换方法及相关装置
本申请要求于2020年9月30日提交中国专利局、申请号202011061451.8、申请名称为“MBS业务的切换方法、装置、计算机可读介质及电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及计算机及通信技术领域，具体而言，涉及MBS业务的切换。
背景技术
在5G网络中为了支持公共安全类业务和面向车联网、物联网等场景中的广播和多播业务需求，提出了MBS(Multicast and Broadcast Service，多播广播业务)，并且MBS也成为5G技术和网络演进的重点技术之一，与4G网络不同，5G MBS基于更加云化和服务化的基本架构，传统的切换机制需要针对MBS方案进行重新设计。
发明内容
本申请的实施例提供了一种MBS业务的切换方法及相关装置，进而至少在一定程度上可以实现MBS业务的切换处理。
本申请的其他特性和优点将通过下面的详细描述变得显然，或部分地通过本申请的实践而习得。
根据本申请实施例的一个方面，提供了一种MBS业务的切换方法，所述方法由用户设备的服务基站执行，包括：获取其它基站针对MBS业务的能力信息，所述能力信息用于指示是否支持MBS业务；若确定将用户设备的MBS业务切换至目标基站，则根据所述其它基站针对MBS业务的能力信息确定所述目标基站是否支持MBS业务；若确定所述目标基站支持MBS业务，则向所述目标基站发起MBS业务切换请求，所述MBS业务切换请求用于指示将所述用户设备的MBS业务切换至所述目标基站。
根据本申请实施例的一个方面，提供了一种MBS业务的切换方法，所述方法由用户设备执行，包括：基于服务基站处理MBS业务；将获取到的其它基站针对MBS业务的能力信息上报给所述服务基站，所述能力信息用于指示是否支持MBS业务；若所述服务基站基于MBS业务切换请求将所述MBS业务切换至支持MBS业务的目标基站，则基于所述目标基站处理所述MBS业务，其中，所述MBS业务切换请求是所述服务基站在根据所述目标基站的能力信息确定所述目标基站支持MBS业务之后发送至所述目标基站的。
根据本申请实施例的一个方面，提供了一种MBS业务的切换装置，包括：第一获取单元，配置为获取其它基站针对MBS业务的能力信息，所述能力信息用于指示是否支持MBS业务；确定单元，配置为若确定将用户设备的MBS业务切换至目标基站，则根据所述其它基站针对MBS业务的能力信息确定所述目标基站是否支持MBS业务；第一处理单 元，配置为若确定所述目标基站支持MBS业务，则向所述目标基站发起MBS业务切换请求，所述MBS业务切换请求用于指示将所述用户设备的MBS业务切换至所述目标基站。
在本申请的一些实施例中，基于前述方案，所述第一获取单元通过以下至少一种方式获取其它基站针对MBS业务的能力信息：
接收用户设备上报的所述其它基站针对所述MBS业务的能力信息；
通过与所述其它基站之间建立的通信链路获取所述其它基站针对所述MBS业务的能力信息；
获取操作维护管理实体配置的所述其它基站针对所述MBS业务的能力信息。
在本申请的一些实施例中，基于前述方案，所述能力信息还用于指示以下至少一种：在N3接口支持共享隧道传输方式还是专用隧道传输方式、在空中接口支持点对点广播还是点对多点广播。
在本申请的一些实施例中，基于前述方案，若所述能力信息还用于指示在N3接口支持共享隧道传输机制还是专用隧道传输机制，则所述MBS业务切换请求还用于指示所述目标基站在N3接口采用的隧道传输方式。
在本申请的一些实施例中，基于前述方案，若所述能力信息还用于指示在空中接口支持点对点广播还是点对多点广播，则所述MBS业务切换请求还用于指示所述目标基站在空中接口采用的广播方式。
在本申请的一些实施例中，基于前述方案，若所述其它基站针对MBS业务的能力信息中不包含有所述目标基站的能力信息，则所述MBS业务的切换装置还包括：发送单元，配置为向所述用户设备发送通知消息，所述通知消息用于通知所述用户设备上报所述目标基站针对MBS业务的能力信息；第一接收单元，配置为接收所述用户设备上报的所述目标基站针对所述MBS业务的能力信息；所述确定单元，配置为根据所述目标基站针对所述MBS业务的能力信息确定所述目标基站是否支持MBS业务。
在本申请的一些实施例中，基于前述方案，所述MBS业务的切换装置还包括：第二接收单元，配置为接收所述用户设备上报的小区测量报告；所述确定单元，配置为根据所述小区测量报告确定将所述用户设备的MBS业务切换至所述目标基站。
在本申请的一些实施例中，基于前述方案，所述MBS业务的切换装置还包括：第三接收单元，配置为接收核心网设备发送的信令消息；所述确定单元，配置为根据所述信令消息确定将所述用户设备的MBS业务切换至所述目标基站。
在本申请的一些实施例中，基于前述方案，所述第一处理单元还配置为：在所述MBS业务切换之前或在所述MBS业务切换过程中，接收核心网设备发送的针对所述MBS业务是否进行数据转发的指示信息；将所述指示信息发送给所述目标基站。
在本申请的一些实施例中，基于前述方案，所述第一处理单元还配置为：若接收到核心网设备发送的针对所述MBS业务的策略调整指令，则基于所述策略调整指令调整针对所述MBS业务的配置消息，所述策略调整指令包括以下至少一种：调整在N3接口采用的隧道传输方式、调整在空中接口采用的广播方式。
根据本申请实施例的一个方面，提供了一种MBS业务的切换装置，包括：第二处理单元，配置为基于服务基站处理MBS业务；上报单元，配置为将获取到的其它基站针对MBS业务的能力信息上报给所述服务基站，所述能力信息用于指示是否支持MBS业务；第三处理单元，配置为若所述服务基站基于MBS业务切换请求将所述MBS业务切换至支持MBS业务的目标基站，则基于所述目标基站处理所述MBS业务，其中，所述MBS业务切换请求是所述服务基站在根据所述目标基站的能力信息确定所述目标基站支持MBS业务之后发送至所述目标基站的。
在本申请的一些实施例中，基于前述方案，所述切换装置还包括：第二获取单元，配置为在接收到所述服务基站发送的通知消息时，获取所述目标基站针对所述MBS业务的能力信息，所述通知消息用于通知用户设备上报所述目标基站针对MBS业务的能力信息；所述上报单元还配置为：将所述目标基站针对所述MBS业务的能力信息上报给所述服务基站，以供所述服务基站确定所述目标基站是否支持MBS业务。
在本申请的一些实施例中，基于前述方案，所述上报单元还配置为：接收所述其它基站广播的系统信息，所述系统信息通过隐式或显式的方式指示所述其它基站针对所述MBS业务的能力信息；根据所述系统信息获取所述其它基站针对所述MBS业务的能力信息。
在本申请的一些实施例中，基于前述方案，所述切换装置还包括：协商单元，配置为与所述MBS业务对应的应用功能实体进行通信协商，以确定所述MBS业务的切换策略信息，所述切换策略信息由所述应用功能实体在所述MBS业务切换之前或在所述MBS业务切换过程中通过核心网设备配置给所述服务基站。
其中，所述切换策略信息包括以下至少一个：切换前后的基站之间是否进行数据转发处理、切换后的基站处理所述MBS业务时在N3接口采用共享隧道传输机制还是专用隧道传输机制、切换后的基站处理所述MBS业务时在N3接口采用点对点广播还是点对多点广播。
在本申请的一些实施例中，基于前述方案，所述上报单元配置为：将获取到的所有其它基站针对所述MBS业务的能力信息上报给所述服务基站。
在本申请的一些实施例中，基于前述方案，所述上报单元配置为：将获取到的所述其它基站中指定基站针对所述MBS业务的能力信息上报给所述服务基站，所述指定基站包括以下至少一种：所述其它基站中信号强度大于或等于设定值的基站、所述其它基站中支持MBS业务的基站。
根据本申请实施例的一个方面，提供了一种计算机可读介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现如上述实施例中所述的MBS业务的切换方法。
根据本申请实施例的一个方面，提供了一种电子设备，包括：一个或多个处理器；存储装置，用于存储一个或多个程序，当所述一个或多个程序被所述一个或多个处理器执行时，使得所述一个或多个处理器实现如上述实施例中所述的MBS业务的切换方法。
根据本申请实施例的一个方面，提供了一种计算机程序产品或计算机程序，该计算机程序产品或计算机程序包括计算机指令，该计算机指令存储在计算机可读存储介质中。计算机设备的处理器从计算机可读存储介质读取该计算机指令，处理器执行该计算机指令，使得该计算机设备执行上述各种可选实施例中提供的MBS业务的切换方法。
在本申请的一些实施例所提供的技术方案中，通过获取其它基站针对MBS业务的能力信息，以在需要将用户设备的MBS业务切换至目标基站时，根据其它基站针对MBS业务的能力信息确定目标基站是否支持MBS业务，并在确定目标基站支持MBS业务时向目标基站发起MBS业务切换请求，以将用户设备的MBS业务切换至目标基站，使得能够基于基站的能力信息来确定目标基站是否支持MBS业务，进而能够避免盲目向不支持MBS业务的基站发起业务切换请求而导致MBS业务的中断及信令资源的浪费，实现了5G系统对MBS业务切换的支持。
附图说明
图1示出了单播通信系统及多播通信系统的数据传输流程示意图；
图2示出了可以应用本申请实施例的技术方案的应用场景的示意图；
图3示出了根据本申请的一个实施例的MBS业务的切换方法的流程图；
图4示出了根据本申请的另一个实施例的MBS业务的切换方法的流程图；
图5示出了根据本申请的一个实施例的MBS业务的切换过程示意图；
图6示出了根据本申请的一个实施例的增强ANR机制的示意图；
图7示出了根据本申请的一个实施例的MBS业务的切换方法的流程图；
图8示出了根据本申请的另一个实施例的MBS业务的切换方法的流程图；
图9示出了根据本申请的一个实施例的MBS业务的切换装置的框图；
图10示出了根据本申请的另一个实施例的MBS业务的切换装置的框图；
图11示出了适于用来实现本申请实施例的电子设备的计算机系统的结构示意图。
具体实施方式
需要说明的是：在本文中提及的“多个”是指两个或两个以上。“和/或”描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
2G(第二代移动通信技术)、3G(第三代移动通信技术)与4G(第四代移动通信技术)的无线通信系统支持MBMS(Multimedia Broadcast and Multicast Service，多媒体广播组播业务)，这个业务分为Broadcast(广播)与Multicast(组播)两种业务。但是，只有2G与3G系统支持多播业务，4G系统在标准上不支持，并且2G、3G和4G系统都支持广播业务。
除了广播和组播业务之外，网络节点之间的通信方式还包括单播。“单播”就是最为常见的一对一的通信，其优点是发送方可以向不同的接收方传输不同的内容，但是如果发送方需要向多个接收方传输相同的内容，那么就需要端到端地分别传输多份相同的数据，效率较低。具体如图1中所示，单播源(即发送方)以单播的方式向多个接收方发送数据时，需要以端到端的方式分别传输多份相同的数据(图1中不同的线型表示不同的数据流)。
“组播”也可以称为“多播”，是发送方将相同的内容传输给多个接收方。网上视频会议、网上视频点播特别适合采用多播方式，因为如果采用单播方式，那么有多少个接收方，就会有多少次传送过程，这种方式显然效率极低；而如果采用不区分目标、全部发送的广播方式，虽然一次可以传送完数据，但是达不到区分特定数据接收方的目的。可见，采用多播方式，既可以实现一次向多个接收方发送相同的数据，也可以达到只对特定对象传送数据的目的。具体如图1中所示，多播源(即发送方)一次可以向多个接收方发送数据相同的数据。
“广播”也是将相同的内容传输给多个接收方，但是在传输的时候没有进行接收方的选择，因此可能存在着对不必要的设备也进行了数据的传输而造成网络资源的浪费。另外，有些接收方可能对广播的内容没有“兴趣”，那么在接收到广播的内容之后，也不得不丢弃掉接收到的数据包，进而也造成了终端资源的浪费。
广播业务与多播业务的根本区别在于系统中的广播业务的UE(User Equipment，用户设备)都可以参加广播业务且无需签约，而多播业务的UE必须是要签约与认证后才能参加。同时需要注意的是：多播业务与广播业务有很多种，对于多播业务，UE是通过网际互连协议(Internet Protocol，IP)多播地址加入相应业务的多播组。而广播业务是通过不同的区域来区分，这样在某个区域中只有一个广播业务，而这个广播业务在不同的时间段可以传输不同的业务。
相关技术中提出了在5G系统中支持MBS业务，但是针对MBS业务的切换机制并未完成设计，这影响了用户设备在移动过程中对MBS业务的支持。因此本申请的实施例针对MBS业务提出了切换处理的方案，例如，在图2所示的一个支持MBS业务的示例性系统架构中，基站1和基站2为相邻的基站，基站1与基站2之间可以通过Xn接口进行连接。 当然，基站1与基站2通过Xn接口进行连接并非是必需的，在本申请的其它实施例中，基站1与基站2之间也可以不进行连接。
继续参照图2所示，基站1与基站2可以通过N2接口分别与AMF(Access and Mobility Management Function，接入与移动性管理功能)实体连接，并且可以通过N3接口分别与UPF(User Plane Function，用户面功能)实体相连接。在图2所示的系统架构中，SMF(Session Management Function，会话管理功能)实体负责MBS相关的会话管理功能，PCF(Policy Control Function，策略控制功能)实体负责MBS相关的策略生成，AF(Application Function，应用功能)实体可以与MBS业务的内容服务器集成在一起部署或者分开部署，UDM(Unified Data Management，统一数据管理)实体用于提供用户签约数据访问、位置登记等功能。该系统架构中没有示出网络中的其它网元，比如OAM(Operation Administration and Maintenance，操作维护管理)实体、NEF(Network Exposure Function，网络开放功能)实体等，但是在实际应用时，可能需要用到这些网元。
在本申请的一个实施例中，用户设备201的服务基站为基站1，并基于基站1处理MBS业务。基站1可以获取到基站2针对MBS业务的能力信息，比如基站2是否支持MBS业务、基站2在N3接口支持共享隧道传输还是专用隧道传输、基站2在空中接口支持点到点广播还是点到多点广播等。其中，基站1可以通过Xn接口来从基站2获取这些信息，或者可以通过用户设备(比如图2中所示的用户设备201，或者是其它未示出的用户设备)的上报来获取这些信息，或者也可以基于OAM实体的配置来获取这些信息。
用户设备201在移动过程中会执行小区测量，并将小区测量报告上报给基站1，如果基站1确定由于用户设备201的移动导致需要将用户设备201的MBS业务(用户设备201的MBS业务可以是用户设备201所加入的MBS传输组所处理的业务)切换至基站2，那么会先根据基站2的能力信息确定基站2是否支持MBS业务，如果基站2支持MBS业务，则基站1可以向基站2发起MBS业务切换请求，以将用户设备201的MBS业务切换至基站2，这样用户设备201可以基于基站2继续处理MBS业务。
在本申请的一个实施例中，用户设备201与AF实体之间也可以进行通信协商，以根据用户设备201的MBS业务来确定是否需要进行数据转发处理(Data forwarding treatment)，并且可以确定在切换之后，基站2在N3接口采用共享隧道传输还是专用隧道传输、在空中接口采用点到点广播还是点到多点广播等，然后由AF实体将确定的切换策略信息通过AMF实体或SMF实体配置给基站1，并由基站1根据基站2的能力信息来将这些切换策略信息添加至MBS业务切换相关的处理中。其中，AMF实体或者SMF实体可以称为核心网设备。
在本申请的一个实施例中，如果不需要进行数据转发处理(比如MBS业务是视频直播业务等)，则直接根据切换策略进行切换处理即可；如果需要进行数据转发处理(比如MBS业务是软件下载或升级任务等)，则需要基站1与基站2之间进行数据转发处理，以保证MBS业务的数据完整性。同时，对于特定的实时多媒体业务，当进行MBS业务切换 时，影响用户体验的首要因素是在切换后的基站上尽早收到实时的数据，而切换前或者切换过程中的数据转发和恢复并不重要。在这种情况下，不进行数据转发能够节省网络资源并加快切换过程。
以下对本申请实施例的技术方案的实现细节进行详细阐述：
图3示出了根据本申请的一个实施例的MBS业务的切换方法的流程图，该MBS业务的切换方法可以由基站来执行，该基站可以是用于向用户设备提供服务的服务基站。参照图3所示，该MBS业务的切换方法至少包括步骤S310至步骤S330，详细介绍如下：
在步骤S310中，获取其它基站针对MBS业务的能力信息，该能力信息用于指示是否支持MBS业务。
在本申请的一个实施例中，其它基站可以是用户设备的服务基站所处位置的临基站。
在本申请的一个实施例中，服务基站获取其它基站针对MBS业务的能力信息可以是接收用户设备上报的其它基站针对MBS业务的能力信息。例如，用户设备可以通过接收当前服务基站的临基站广播的系统信息，并通过该系统信息获取到该临基站针对MBS业务的能力信息。
在本申请的一个实施例中，服务基站获取其它基站针对MBS业务的能力信息可以是通过与其它基站之间建立的通信链路获取其它基站针对MBS业务的能力信息。即服务基站可以通过Xn接口与临基站建立通信链路，进而获取到其它基站针对MBS业务的能力信息。
在本申请的一个实施例中，服务基站获取其它基站针对MBS业务的能力信息可以是获取操作维护管理实体配置的其它基站针对MBS业务的能力信息。比如操作维护管理实体可以向服务基站预配置其它基站针对MBS业务的能力信息。
需要说明的是：服务基站可以通过上述方式中的一种或多种来获取其它基站针对MBS业务的能力信息。
在本申请的一个实施例中，前述的能力信息除了可以指示是否支持MBS业务之外，还可以指示以下至少一种：在N3接口支持共享隧道传输方式还是专用隧道传输方式、在空中接口支持点对点广播还是点对多点广播。其中，这些能力信息可以用于在MBS业务切换时选择目标基站的切换策略信息，比如若目标基站在N3接口支持共享隧道传输方式，则可以在MBS业务切换至目标基站之后，在目标基站的N3接口采用共享隧道传输方式。
在步骤S320中，若确定将用户设备的MBS业务切换至目标基站，则根据其它基站针对MBS业务的能力信息确定目标基站是否支持MBS业务。
在本申请的一个实施例中，可以接收用户设备上报的小区测量报告，然后根据小区测量报告确定是否将用户设备的MBS业务切换至目标基站，即确定将用户设备的MBS业务切换至目标基站的方式可以是根据小区测量报告确定将用户设备的MBS业务切换至目标基站。该实施例的技术方案是基于用户设备的移动来触发切换的，比如服务基站根据用户 设备上报的小区测量报告确定用户设备测量到相邻的某个基站的信号强度越来越大，则可以确定用户设备将要移动至该基站的覆盖范围内，进而可以触发切换。
在本申请的一个实施例中，可以接收核心网设备发送的信令消息，根据该信令消息确定是否将用户设备的MBS业务切换至目标基站，即确定将用户设备的MBS业务切换至目标基站的方式可以是根据信令消息确定将用户设备的MBS业务切换至目标基站。比如核心网设备可以根据服务基站的负载情况、业务流对应的会话参数等信息来确定是否需要将用户设备的MBS业务由服务基站切换至另一个基站，如果需要进行切换，则向服务基站发送信令消息。其中，该实施例中的核心网设备可以是AMF或者SMF。
在本申请的一个实施例中，如果服务基站获取到的其它基站针对MBS业务的能力信息中不包含有目标基站的能力信息，则服务基站可以向用户设备发送通知消息，该通知消息用于通知用户设备上报目标基站针对MBS业务的能力信息，进而用户设备可以获取目标基站针对MBS业务的能力信息，比如通过接收目标基站广播的系统信息来获取目标基站针对MBS业务的能力信息，然后将获取到的目标基站针对MBS业务的能力信息上报给服务基站，以便于服务基站根据目标基站针对MBS业务的能力信息确定目标基站是否支持MBS业务。
继续参照图3所示，在步骤S330中，若确定目标基站支持MBS业务，则向目标基站发起MBS业务切换请求，该MBS业务切换请求用于指示将用户设备的MBS业务切换至目标基站。
在本申请的一个实施例中，如果获取到了目标基站在N3接口支持共享隧道传输机制还是专用隧道传输机制，则服务基站还可以通过MBS业务切换请求指示目标基站在N3接口采用的隧道传输方式，即是采用共享隧道传输方式还是专用隧道传输方式。
在本申请的一个实施例中，如果获取到了目标基站在空中接口支持点对点广播还是点对多点广播，则服务基站还可以通过MBS业务切换请求指示目标基站在空中接口采用的广播方式，即采用点对点广播方式还是点对多点广播方式。
在本申请的一个实施例中，如果服务基站接收到核心网设备发送的针对MBS业务是否进行数据转发的指示信息，则服务基站可以将该指示信息发送给目标基站，以指示目标基站是否需要进行数据转发。在一些情况下，服务基站可以将该指示信息添加至MBS业务切换请求中发送给目标基站。并且，服务基站可以在MBS业务切换之前或在MBS业务切换过程中来接收核心网设备发送的该指示信息。
具体来说，在MBS业务切换之前，这个指示信息可以作为UE上下文的参数配置到核心网设备以及基站上。当MBS业务切换发生后，这个指示信息会与上下文一起转移到目标基站，即新的服务基站。
在本申请的一个实施例中，如果服务基站接收到核心网设备发送的针对MBS业务的策略调整指令，则服务基站可以基于该策略调整指令调整针对MBS业务的配置消息，该策 略调整指令包括以下至少一种：调整在N3接口采用的隧道传输方式、调整在空中接口采用的广播方式。比如服务基站针对MBS业务在N3接口采用的是共享隧道传输方式，那么如果核心网设备需要对服务基站在N3接口采用的隧道传输方式进行调整，比如将共享隧道传输方式调整为专用隧道传输方式，则可以向服务基站发送策略调整指令。
图3是从基站的角度来阐述本申请实施例的MBS业务的切换方法，以下结合图4从用户设备的角度对本申请实施例的MBS业务的切换方法进行详细说明：
图4示出了根据本申请的一个实施例的MBS业务的切换方法的流程图，该MBS业务的切换方法可以由用户设备来执行。参照图4所示，该MBS业务的切换方法至少包括步骤S410至步骤S430，详细介绍如下：
在步骤S410中，基于服务基站处理MBS业务。
在本申请的一个实施例中，用户设备基于服务基站处理MBS业务的过程可以是加入某个MBS群组来接收服务基站发送的MBS业务数据，该MBS业务数据比如可以是多媒体数据(如直播视频流数据、新闻类数据等)、软件下载包数据、软件更新包数据等。
在步骤S420中，将获取到的其它基站针对MBS业务的能力信息上报给服务基站，该能力信息用于指示是否支持MBS业务。
在本申请的一个实施例中，各基站可以通过系统信息隐式或显式地指示针对MBS业务的能力信息，进而用户设备可以通过接收各基站广播的系统信息来获取各基站针对MBS业务的能力信息。
在本申请的一个实施例中，用户设备可以将获取到的所有其它基站针对MBS业务的能力信息上报给服务基站。
在本申请的一个实施例中，用户设备可以将获取到的其它基站中指定基站针对MBS业务的能力信息上报给服务基站，该指定基站包括以下至少一种：其它基站中信号强度大于或等于设定值的基站、其它基站中支持MBS业务的基站。即在该实施例中，用户设备可以先根据基站的信息进行筛选，然后将筛选后的指定基站针对MBS业务的能力信息上报给服务基站。
继续参照图4所示，在步骤S430中，若服务基站基于MBS业务切换请求将MBS业务切换至支持MBS业务的目标基站，则基于目标基站处理MBS业务，其中，该MBS业务切换请求是服务基站在根据目标基站的能力信息确定目标基站支持MBS业务之后发送至目标基站的。
在本申请的一个实施例中，服务基站可以基于获取到的各个基站针对MBS业务的能力信息来确定目标基站是否支持MBS业务，如果服务基站获取到的各个基站针对MBS业务的能力信息中不包含目标基站针对MBS业务的能力信息，则可以向用户设备发送通知消息，该通知消息用于通知用户设备上报目标基站针对MBS业务的能力信息，用户设备在接 收到该通知消息之后，获取目标基站针对MBS业务的能力信息，然后将目标基站针对MBS业务的能力信息上报给服务基站，以供服务基站确定目标基站是否支持MBS业务。
在本申请的一个实施例中，用户设备还可以与MBS业务对应的应用功能实体进行通信协商，以确定MBS业务的切换策略信息，然后由AF实体在MBS业务切换之前或在MBS业务切换过程中将该切换策略信息通过核心网设备配置给服务基站。比如，AF实体可以将该切换策略信息直接发送给PCF实体，或者AF实体将该切换策略信息通过NEF实体发送给PCF实体，然后由PCF实体将该切换策略信息发送给AMF实体和/或SMF实体，并通过AMF实体或SMF实体配置给服务基站。在一种可能的实现方式中，上述切换策略信息可以包括以下中的至少一个：切换前后的基站之间是否进行数据转发处理、切换后的基站处理MBS业务时在N3接口采用共享隧道传输机制还是专用隧道传输机制、切换后的基站处理MBS业务时在N3接口采用点对点广播还是点对多点广播。
需要说明的是，切换前后的基站之间是否进行数据转发处理可以是根据用户设备的MBS业务的类型来确定的，比如若MBS业务类型属于视频直播业务、实时互动业务等对丢包要求不高的业务，那么可以不进行数据转发处理；而若MBS业务类型属于软件包的下载/更新业务、地图的更新业务、规划路径的更新业务等对丢包要求较高的业务，那么可以进行数据转发处理，以保证MBS业务的数据完整性。
以上分别从基站和用户设备的角度对本申请实施例的技术方案进行了阐述，即本申请实施例的技术方案主要是提出了一种针对5G MBS业务的无线网络切换机制，具体是通过引入新的MBS相关特性参数到5G空中接口和基站之间接口及基站与核心网之间的接口，实现在切换过程中主动判断潜在目标基站是否支持5G MBS业务的相关能力。同时，在一些实施例中，还可以在切换过程中引入UE和AF实体之间的通信协商，以依据业务对丢包特性的要求等选择合理的切换机制，实现在5G网络中对MBS业务切换的有效支持。
在一种情况下，如图5所示，UE的MBS业务的切换过程实质上是要把空中接口的5G数据无线承载和基站N3接口的隧道进行切换，从而使得AF实体到UE的业务数据能够持续进行。对于图5所示的实施例，是将UE与基站1之间的空中接口切换为UE与基站2之间的空中接口，将基站1与UPF实体之间的N3接口切换为基站2与UPF实体之间的N3接口。
在本申请的一个实施例中，可以通过增强ANR(Automatic Neighbor Relation，自动邻居关系)机制来辅助进行MBS业务的切换，通常来说，基站可以通过UE report(上报)和/或基站之间通信和/或OAM实体配置等方法，来学习到其它基站针对5G MBS业务的能力信息，该能力信息包括：该基站是否支持MBS业务；该基站在N3接口是否支持共享隧道传输机制，是否支持专用隧道机制；该基站在空中接口是否支持点到多点广播，是否支持点到点广播等。
如图6所示，本申请实施例中的增强ANR机制可以包括601、602和603中的部分机制或全部机制。其中，图6中所示的601是由UE测量并获取邻基站针对MBS业务的能力 信息，然后上报给服务基站，进而由服务基站增加/更新维护的ANR数据。图6中所示的602是由各个基站从OAM实体/网络侧设备获取邻基站针对MBS业务的能力信息，并由各个基站增加/更新维护的ANR数据，网络侧设备可以是核心网设备。图6中所示的603是基站之间通过通信来获取各自邻基站针对MBS业务的能力信息，并由各个基站增加/更新维护的ANR数据。
为了支持上述方案，用户设备与基站需要支持相应的协议，例如，支持基站可以通过系统信息隐式或者显式广播前述针对MBS业务的能力信息；用户设备可以通过UE上报机制，将邻基站针对MBS业务的能力信息告知服务基站，以辅助服务基站进行决策。
本申请上述实施例中的增强ANR机制可以使得服务基站对目标基站是否支持5G MBS，以及在空中接口和N3接口分别支持什么样的MBS传输方式有提前的预知，进而配置相应的切换策略信息。
在本申请的一个实施例中，在切换过程中UE和AF实体之间可以进行通信协商，以根据MBS业务对丢包特性的要求以及可承受的切换时间等选择合理的切换策略，实现在5G网络中对MBS业务切换的有效支持。具体而言，由于MBS业务的类型不相同时，对数据转发处理的要求并不一样，因此为了节省网络资源，对于不需要数据转发的5G MBS业务，通过UE和AF实体交互确认后，可以通过AF实体通知5G核心网设备对该MBS业务无需进行数据转发，从而简化在源基站(切换之前用户设备的服务基站)和目标基站之间的数据转发处理。在一些情况下，源基站和目标基站所对应的核心网可以是相同的。
在本申请的一个实施例中，AF实体可以针对每个MBS业务配置是否需要进行数据转发的策略，比如AF实体可以通过PCF实体向AMF实体、SMF实体以及UE配置相应的策略，并且可以对配置的策略进行更新。同时，具体的配置过程可以是MBS业务切换之前发生的，也可以是在切换过程中发生的。
图7示出了根据本申请的一个实施例的MBS业务的切换方法的流程图，具体包括以下步骤：
步骤S701，通过增强的ANR机制获知目标基站的信息。
步骤S702，UE与AF实体进行通信协商，以确定MBS业务是否需要数据转发处理。若是，则执行步骤S704；否则，执行步骤S703。
在本申请的一个实施例中，比如若MBS业务属于视频直播业务、实时互动业务等对丢包要求不高的业务，那么可以不进行数据转发处理；而若MBS业务属于软件包的下载/更新业务、地图的更新业务、规划路径的更新业务等对丢包要求较高的业务，那么可以进行数据转发处理，以保证MBS业务的数据完整性。
步骤S703，执行无数据转发的MBS切换过程。
步骤S704，执行有数据转发的MBS切换过程。
需要说明的是，不管是有数据转发的MBS切换过程，还是无数据转发的MBS切换过程，核心网设备或者源基站都可以根据目标基站在N3接口支持的隧道传输方式(共享隧道传输方式、专用隧道传输方式等)和在空中接口支持的广播方式(点对点方式、点对多点方式等)确定切换策略，比如切换之后在空中接口和N3接口分别支持什么样的MBS传输方式等。
在本申请的一个实施例中，MBS业务的切换过程可以由用户设备的移动性所触发，或者可以由网络侧设备等非移动性的原因触发，由网络侧设备等非移动性原因触发的切换包括：网络的负载均衡策略、业务流对应的会话参数改变等。本申请上述实施例的技术方案适用于上述两种情况，以下结合图8以用户设备的移动性触发为例进行阐述，主要包括如下步骤：
步骤S801，UE在源基站建立了MBS会话来处理MBS业务，在切换发生前，基站之间、OAM实体与基站之间、UE与基站之间可以进行ANR机制，使得基站之间能够获得邻基站对MBS业务的能力信息，包括但不限于：该基站是否支持MBS业务；该基站在N3接口是否支持共享隧道传输机制，是否支持专用隧道机制；该基站在空中接口是否支持点到多点广播，是否支持点到点广播等。
步骤S802，源基站获取到ANR执行结果，即源基站获知目标基站是否支持MBS业务，在N3接口支持专用隧道传输方式还是共享隧道传输方式，在空中接口支持PTP(Point To Point，点对点)还是PTMP(Point-to-Multipoint，点对多点)。
步骤S803，在切换发生前，UE和AF实体进行通信协议，以确定切换策略信息，如切换过程中是否需要进行数据转发、切换后在N3接口采用共享隧道传输方式还是专用隧道传输方式、切换后在空中接口采用点到多点广播还是点到点广播方式等。
步骤S804，UE发生移动，通过测量机制发现邻基站。
步骤S805，UE上报测量报告给服务基站(即源基站)，该测量报告可以包括目标基站的PCI(Physical Cell Identifier，物理小区标识)。
在本申请的一个实施例中，如果服务基站已经通过ANR机制学习到了所有邻基站针对MBS业务的能力信息，则可以根据UE上报的PCI确定出邻基站是否支持MBS业务等信息。如果服务基站还没有通过ANR机制学习到所有邻基站针对MBS业务的能力信息，则可以启动ANR机制，比如可以通知UE从邻基站的系统信息广播中或者其它方式进行获取，然后汇报给服务基站。
在本申请的一个实施例中，UE可以向服务基站上报部分或者所有小区的信息给服务基站，或者进行筛选(比如依据邻基站的信号强度排序或者依据邻基站是否支持MBS业务等进行筛选)之后再上报给服务基站。
步骤S806，源基站根据ANR信息判断目标基站的MBS业务的支持情况。
步骤S807，如果源基站确定目标基站支持MBS业务，则源基站发起MBS业务切换请求，该MBS业务切换请求可以携带MBS切换的指示信息，包括是否进行数据转发、切换后在N3接口采用共享隧道传输方式还是专用隧道传输方式、切换后在空中接口采用点到多点广播还是点到点广播方式等。
在本申请的一个实施例中，MBS业务切换请求中携带的MBS切换的指示信息可以是由源基站确定的，或者也可以是AMF实体指示给源基站的。
步骤S808，目标基站确定切换策略信息，包括是否进行数据转发、切换后在N3接口采用共享隧道传输方式还是专用隧道传输方式、切换后在空中接口采用点到多点广播还是点到点广播方式等。
需要说明的是：如果源基站发送的MBS业务切换请求中没有携带该切换策略信息，则目标基站可以主动生产相应的配置消息，并且可以在后续根据核心网设备发送的策略调整指令进行调整。
步骤S809，目标基站向源基站发送切换应答。
本申请上述实施例的技术方案通过引入新的MBS相关特性参数到5G空中接口和基站之间接口及基站与核心网之间的接口，实现在切换过程中主动判断潜在目标基站是否支持5G MBS业务的相关能力。同时，在一些实施例中，还可以在切换过程中引入UE和AF实体之间的通信协商，以依据业务对丢包特性的要求等选择合理的切换机制，避免对业务进行无差别数据转发导致资源浪费，实现在5G网络中对MBS业务切换的有效支持。
以下介绍本申请的装置实施例，可以用于执行本申请上述实施例中的MBS业务的切换方法。对于本申请装置实施例中未披露的细节，请参照本申请上述的MBS业务的切换方法的实施例。
图9示出了根据本申请的一个实施例的MBS业务的切换装置的框图，该MBS业务的切换装置可以设置在基站内，该基站可以是用于向用户设备提供服务的服务基站。
参照图9所示，根据本申请的一个实施例的MBS业务的切换装置900，包括：第一获取单元902、确定单元904和第一处理单元906。
其中，第一获取单元902配置为获取其它基站针对MBS业务的能力信息，所述能力信息用于指示是否支持MBS业务；确定单元904配置为若确定将用户设备的MBS业务切换至目标基站，则根据所述其它基站针对MBS业务的能力信息确定所述目标基站是否支持MBS业务；第一处理单元906配置为若确定所述目标基站支持MBS业务，则向所述目标基站发起MBS业务切换请求，所述MBS业务切换请求用于指示将所述用户设备的MBS业务切换至所述目标基站。
在本申请的一些实施例中，基于前述方案，第一获取单元902通过以下至少一种方式获取其它基站针对MBS业务的能力信息：
接收用户设备上报的所述其它基站针对所述MBS业务的能力信息；
通过与所述其它基站之间建立的通信链路获取所述其它基站针对所述MBS业务的能力信息；
获取操作维护管理实体配置的所述其它基站针对所述MBS业务的能力信息。
在本申请的一些实施例中，基于前述方案，所述能力信息还用于指示以下至少一种：在N3接口支持共享隧道传输方式还是专用隧道传输方式、在空中接口支持点对点广播还是点对多点广播。
在本申请的一些实施例中，基于前述方案，若所述能力信息还用于指示在N3接口支持共享隧道传输机制还是专用隧道传输机制，则所述MBS业务切换请求还用于指示所述目标基站在N3接口采用的隧道传输方式。
在本申请的一些实施例中，基于前述方案，若所述能力信息还包括在空中接口支持点对点广播还是点对多点广播，则所述MBS业务切换请求还用于指示所述目标基站在空中接口采用的广播方式。
在本申请的一些实施例中，基于前述方案，若所述其它基站针对MBS业务的能力信息中不包含有所述目标基站的能力信息，则所述MBS业务的切换装置900还包括：发送单元，配置为向所述用户设备发送通知消息，所述通知消息用于通知所述用户设备上报所述目标基站针对MBS业务的能力信息；第一接收单元，配置为接收所述用户设备上报的所述目标基站针对所述MBS业务的能力信息；所述确定单元，配置为根据所述目标基站针对所述MBS业务的能力信息确定所述目标基站是否支持MBS业务。
在本申请的一些实施例中，基于前述方案，所述MBS业务的切换装置900还包括：第二接收单元，配置为接收所述用户设备上报的小区测量报告；所述确定单元，配置为根据所述小区测量报告确定将所述用户设备的MBS业务切换至所述目标基站。
在本申请的一些实施例中，基于前述方案，所述MBS业务的切换装置900还包括：第三接收单元，配置为接收核心网设备发送的信令消息；所述确定单元，配置为根据所述信令消息确定将所述用户设备的MBS业务切换至所述目标基站。
在本申请的一些实施例中，基于前述方案，第一处理单元906还配置为：在所述MBS业务切换之前或在所述MBS业务切换过程中，接收核心网设备发送的针对所述MBS业务是否进行数据转发的指示信息；将所述指示信息发送给所述目标基站。
在本申请的一些实施例中，基于前述方案，第一处理单元906还配置为：若接收到核心网设备发送的针对所述MBS业务的策略调整指令，则基于所述策略调整指令调整针对所述MBS业务的配置消息，所述策略调整指令包括以下至少一种：调整在N3接口采用的隧道传输方式、调整在空中接口采用的广播方式。
图10示出了根据本申请的一个实施例的MBS业务的切换装置的框图，该MBS业务的切换装置可以设置在用户设备内。
参照图10所示，根据本申请的一个实施例的MBS业务的切换装置1000，包括：第二处理单元1002、上报单元1004和第三处理单元1006。
其中，第二处理单元1002配置为基于服务基站处理MBS业务；上报单元1004配置为将获取到的其它基站针对MBS业务的能力信息上报给所述服务基站，所述能力信息用于指示是否支持MBS业务；第三处理单元1006配置为若所述服务基站基于MBS业务切换请求将所述MBS业务切换至支持MBS业务的目标基站，则基于所述目标基站处理所述MBS业务，其中，所述MBS业务切换请求是所述服务基站在根据所述目标基站的能力信息确定所述目标基站支持MBS业务之后发送至所述目标基站的。
在本申请的一些实施例中，基于前述方案，所述切换装置1000还包括：第二获取单元，配置为在接收到所述服务基站发送的通知消息时，获取所述目标基站针对所述MBS业务的能力信息，所述通知消息用于通知用户设备上报所述目标基站针对MBS业务的能力信息；所述上报单元1004还配置为：将所述目标基站针对所述MBS业务的能力信息上报给所述服务基站，以供所述服务基站确定所述目标基站是否支持MBS业务。
在本申请的一些实施例中，基于前述方案，所述上报单元1004还配置为：接收所述其它基站广播的系统信息，所述系统信息通过隐式或显式的方式指示所述其它基站针对所述MBS业务的能力信息；根据所述系统信息获取所述其它基站针对所述MBS业务的能力信息。
在本申请的一些实施例中，基于前述方案，所述切换装置1000还包括：协商单元，配置为与所述MBS业务对应的应用功能实体进行通信协商，以确定所述MBS业务的切换策略信息，所述切换策略信息由所述应用功能实体在所述MBS业务切换之前或在所述MBS业务切换过程中通过核心网设备配置给所述服务基站。
其中，所述切换策略信息包括以下至少一个：切换前后的基站之间是否进行数据转发处理、切换后的基站处理所述MBS业务时在N3接口采用共享隧道传输机制还是专用隧道传输机制、切换后的基站处理所述MBS业务时在N3接口采用点对点广播还是点对多点广播。
在本申请的一些实施例中，基于前述方案，所述上报单元1004配置为：将获取到的所有其它基站针对所述MBS业务的能力信息上报给所述服务基站。
在本申请的一些实施例中，基于前述方案，所述上报单元1004配置为：将获取到的所述其它基站中指定基站针对所述MBS业务的能力信息上报给所述服务基站，所述指定基站包括以下至少一种：所述其它基站中信号强度大于或等于设定值的基站、所述其它基站中支持MBS业务的基站。
图11示出了适于用来实现本申请实施例的电子设备的计算机系统的结构示意图。
需要说明的是，图11示出的电子设备的计算机系统1100仅是一个示例，不应对本申请实施例的功能和使用范围带来任何限制。
如图11所示，计算机系统1100包括中央处理单元(Central Processing Unit，CPU)1101，其可以根据存储在只读存储器(Read-Only Memory，ROM)1102中的程序或者从存储部分1108加载到随机访问存储器(Random Access Memory，RAM)1103中的程序而执行各种适当的动作和处理，例如执行上述实施例中所述的方法。在RAM 1103中，还存储有系统操作所需的各种程序和数据。CPU 1101、ROM 1102以及RAM 1103通过总线1104彼此相连。输入/输出(Input/Output，I/O)接口1105也连接至总线1104。
以下部件连接至I/O接口1105：包括键盘、鼠标等的输入部分1106；包括诸如阴极射线管(Cathode Ray Tube，CRT)、液晶显示器(Liquid Crystal Display，LCD)等以及扬声器等的输出部分1107；包括硬盘等的存储部分1108；以及包括诸如LAN(Local Area Network，局域网)卡、调制解调器等的网络接口卡的通信部分1109。通信部分1109经由诸如因特网的网络执行通信处理。驱动器1110也根据需要连接至I/O接口1105。可拆卸介质1111，诸如磁盘、光盘、磁光盘、半导体存储器等等，根据需要安装在驱动器1110上，以便于从其上读出的计算机程序根据需要被安装入存储部分1108。
特别地，根据本申请的实施例，上文参考流程图描述的过程可以被实现为计算机软件程序。例如，本申请的实施例包括一种计算机程序产品，其包括承载在计算机可读介质上的计算机程序，该计算机程序包含用于执行流程图所示的方法的计算机程序。在这样的实施例中，该计算机程序可以通过通信部分1109从网络上被下载和安装，和/或从可拆卸介质1111被安装。在该计算机程序被中央处理单元(CPU)1101执行时，执行本申请的系统中限定的各种功能。
需要说明的是，本申请实施例所示的计算机可读介质可以是计算机可读信号介质或者计算机可读存储介质或者是上述两者的任意组合。计算机可读存储介质例如可以是——但不限于——电、磁、光、电磁、红外线、或半导体的系统、装置或器件，或者任意以上的组合。计算机可读存储介质的更具体的例子可以包括但不限于：具有一个或多个导线的电连接、便携式计算机磁盘、硬盘、随机访问存储器(RAM)、只读存储器(ROM)、可擦式可编程只读存储器(Erasable Programmable Read Only Memory，EPROM)、闪存、光纤、便携式紧凑磁盘只读存储器(Compact Disc Read-Only Memory，CD-ROM)、光存储器件、磁存储器件、或者上述的任意合适的组合。在本申请中，计算机可读存储介质可以是任何包含或存储程序的有形介质，该程序可以被指令执行系统、装置或者器件使用或者与其结合使用。而在本申请中，计算机可读的信号介质可以包括在基带中或者作为载波一部分传播的数据信号，其中承载了计算机可读的计算机程序。这种传播的数据信号可以采用多种形式，包括但不限于电磁信号、光信号或上述的任意合适的组合。计算机可读的信号介质还可以是计算机可读存储介质以外的任何计算机可读介质，该计算机可读介质可以发送、传播或者传输用于由指令执行系统、装置或者器件使用或者与其结合使用的程序。计算机 可读介质上包含的计算机程序可以用任何适当的介质传输，包括但不限于：无线、有线等等，或者上述的任意合适的组合。
附图中的流程图和框图，图示了按照本申请各种实施例的系统、方法和计算机程序产品的可能实现的体系架构、功能和操作。其中，流程图或框图中的每个方框可以代表一个模块、程序段、或代码的一部分，上述模块、程序段、或代码的一部分包含一个或多个用于实现规定的逻辑功能的可执行指令。也应当注意，在有些作为替换的实现中，方框中所标注的功能也可以以不同于附图中所标注的顺序发生。例如，两个接连地表示的方框实际上可以基本并行地执行，它们有时也可以按相反的顺序执行，这依所涉及的功能而定。也要注意的是，框图或流程图中的每个方框、以及框图或流程图中的方框的组合，可以用执行规定的功能或操作的专用的基于硬件的系统来实现，或者可以用专用硬件与计算机指令的组合来实现。
描述于本申请实施例中所涉及到的单元可以通过软件的方式实现，也可以通过硬件的方式来实现，所描述的单元也可以设置在处理器中。其中，这些单元的名称在某种情况下并不构成对该单元本身的限定。
作为另一方面，本申请还提供了一种计算机可读介质，该计算机可读介质可以是上述实施例中描述的电子设备中所包含的；也可以是单独存在，而未装配入该电子设备中。上述计算机可读介质承载有一个或者多个程序，当上述一个或者多个程序被一个该电子设备执行时，使得该电子设备实现上述实施例中所述的方法。
应当注意，尽管在上文详细描述中提及了用于动作执行的设备的若干模块或者单元，但是这种划分并非强制性的。实际上，根据本申请的实施方式，上文描述的两个或更多模块或者单元的特征和功能可以在一个模块或者单元中具体化。反之，上文描述的一个模块或者单元的特征和功能可以进一步划分为由多个模块或者单元来具体化。
通过以上的实施方式的描述，本领域的技术人员易于理解，这里描述的示例实施方式可以通过软件实现，也可以通过软件结合必要的硬件的方式来实现。因此，根据本申请实施方式的技术方案可以以软件产品的形式体现出来，该软件产品可以存储在一个非易失性存储介质(可以是CD-ROM，U盘，移动硬盘等)中或网络上，包括若干指令以使得一台计算设备(可以是个人计算机、服务器、触控终端、或者网络设备等)执行根据本申请实施方式的方法。

Claims (18)

  1. 一种多播广播MBS业务的切换方法，所述方法由用户设备的服务基站执行，包括：
    获取其它基站针对MBS业务的能力信息，所述能力信息用于指示是否支持MBS业务；
    若确定将所述用户设备的MBS业务切换至目标基站，则根据所述其它基站针对MBS业务的能力信息确定所述目标基站是否支持MBS业务；
    若确定所述目标基站支持MBS业务，则向所述目标基站发起MBS业务切换请求，所述MBS业务切换请求用于指示将所述用户设备的MBS业务切换至所述目标基站。
  2. 根据权利要求1所述的MBS业务的切换方法，获取其它基站针对MBS业务的能力信息，包括以下至少一种：
    接收用户设备上报的所述其它基站针对所述MBS业务的能力信息；
    通过与所述其它基站之间建立的通信链路获取所述其它基站针对所述MBS业务的能力信息；
    获取操作维护管理实体配置的所述其它基站针对所述MBS业务的能力信息。
  3. 根据权利要求1所述的MBS业务的切换方法，所述能力信息还用于指示以下至少一种：
    在N3接口支持共享隧道传输方式还是专用隧道传输方式、在空中接口支持点对点广播还是点对多点广播。
  4. 根据权利要求3所述的MBS业务的切换方法，
    若所述能力信息还用于指示在N3接口支持共享隧道传输机制还是专用隧道传输机制，则所述MBS业务切换请求还用于指示所述目标基站在N3接口采用的隧道传输方式；
    若所述能力信息还用于指示在空中接口支持点对点广播还是点对多点广播，则所述MBS业务切换请求还用于指示所述目标基站在空中接口采用的广播方式。
  5. 根据权利要求1所述的MBS业务的切换方法，若所述其它基站针对MBS业务的能力信息中不包含有所述目标基站的能力信息，则所述MBS业务的切换方法还包括：
    向所述用户设备发送通知消息，所述通知消息用于通知所述用户设备上报所述目标基站针对MBS业务的能力信息；
    接收所述用户设备上报的所述目标基站针对所述MBS业务的能力信息；
    根据所述目标基站针对所述MBS业务的能力信息确定所述目标基站是否支持MBS业务。
  6. 根据权利要求1所述的MBS业务的切换方法，在确定将所述用户设备的MBS业务切换至目标基站之前，所述MBS业务的切换方法还包括：
    接收所述用户设备上报的小区测量报告；
    所述确定将所述用户设备的MBS业务切换至目标基站，包括：
    根据所述小区测量报告确定将所述用户设备的MBS业务切换至所述目标基站；或，在确定将所述用户设备的MBS业务切换至目标基站之前，所述MBS业务的切换方法还包括：
    接收核心网设备发送的信令消息；
    所述确定将所述用户设备的MBS业务切换至目标基站，包括：
    根据所述信令消息确定将所述用户设备的MBS业务切换至所述目标基站。
  7. 根据权利要求1所述的MBS业务的切换方法，所述MBS业务的切换方法还包括：
    在所述MBS业务切换之前或在所述MBS业务切换过程中，接收核心网设备发送的针对所述MBS业务是否进行数据转发的指示信息；
    将所述指示信息发送给所述目标基站。
  8. 根据权利要求1至7中任一项所述的MBS业务的切换方法，所述MBS业务的切换方法还包括：
    若接收到核心网设备发送的针对所述MBS业务的策略调整指令，则基于所述策略调整指令调整针对所述MBS业务的配置消息，所述策略调整指令包括以下至少一种：调整在N3接口采用的隧道传输方式、调整在空中接口采用的广播方式。
  9. 一种MBS业务的切换方法，所述方法由用户设备执行，包括：
    基于服务基站处理MBS业务；
    将获取到的其它基站针对MBS业务的能力信息上报给所述服务基站，所述能力信息用于指示是否支持MBS业务；
    若所述服务基站基于MBS业务切换请求将所述MBS业务切换至支持MBS业务的目标基站，则基于所述目标基站处理所述MBS业务，其中，所述MBS业务切换请求是所述服务基站在根据所述目标基站的能力信息确定所述目标基站支持MBS业务之后发送至所述目标基站的。
  10. 根据权利要求9所述的MBS业务的切换方法，在基于所述目标基站处理所述MBS业务之前，所述切换方法还包括：
    若接收到所述服务基站发送的通知消息，则获取所述目标基站针对所述MBS业务的能力信息，所述通知消息用于通知用户设备上报所述目标基站针对MBS业务的能力信息；
    将所述目标基站针对所述MBS业务的能力信息上报给所述服务基站，以供所述服务基站确定所述目标基站是否支持MBS业务。
  11. 根据权利要求9所述的MBS业务的切换方法，在将获取到的其它基站针对MBS业务的能力信息上报给所述服务基站之前，所述切换方法还包括：
    接收所述其它基站广播的系统信息，所述系统信息通过隐式或显式的方式指示所述其它基站针对所述MBS业务的能力信息；
    根据所述系统信息获取所述其它基站针对所述MBS业务的能力信息。
  12. 根据权利要求9所述的MBS业务的切换方法，所述切换方法还包括：
    与所述MBS业务对应的应用功能实体进行通信协商，以确定所述MBS业务的切换策略信息，所述切换策略信息由所述应用功能实体在所述MBS业务切换之前或在所述MBS业务切换过程中通过核心网设备配置给所述服务基站，
    其中，所述切换策略信息包括以下至少一个：切换前后的基站之间是否进行数据转发处理、切换后的基站处理所述MBS业务时在N3接口采用共享隧道传输机制还是专用隧道传输机制、切换后的基站处理所述MBS业务时在N3接口采用点对点广播还是点对多点广播。
  13. 根据权利要求9至12中任一项所述的MBS业务的切换方法，将获取到的其它基站针对MBS业务的能力信息上报给所述服务基站，包括：
    将获取到的所有其它基站针对所述MBS业务的能力信息上报给所述服务基站；或者
    将获取到的所述其它基站中指定基站针对所述MBS业务的能力信息上报给所述服务基站，所述指定基站包括以下至少一种：所述其它基站中信号强度大于或等于设定值的基站、所述其它基站中支持MBS业务的基站。
  14. 一种MBS业务的切换装置，包括：
    第一获取单元，配置为获取其它基站针对MBS业务的能力信息，所述能力信息用于指示是否支持MBS业务；
    确定单元，配置为若确定将所述用户设备的MBS业务切换至目标基站，则根据所述其它基站针对MBS业务的能力信息确定所述目标基站是否支持MBS业务；
    第一处理单元，配置为若确定所述目标基站支持MBS业务，则向所述目标基站发起MBS业务切换请求，所述MBS业务切换请求用于指示将所述用户设备的MBS业务切换至所述目标基站。
  15. 一种MBS业务的切换装置，包括：
    第二处理单元，配置为基于服务基站处理MBS业务；
    上报单元，配置为将获取到的其它基站针对MBS业务的能力信息上报给所述服务基站，所述能力信息用于指示是否支持MBS业务；
    第三处理单元，配置为若所述服务基站基于MBS业务切换请求将所述MBS业务切换至支持MBS业务的目标基站，则基于所述目标基站处理所述MBS业务，其中，所述MBS业务切换请求是所述服务基站在根据所述目标基站的能力信息确定所述目标基站支持MBS业务之后发送至所述目标基站的。
  16. 一种计算机可读介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求1至8中任一项所述的MBS业务的切换方法；或实现如权利要求9至13中任一项所述的MBS业务的切换方法。
  17. 一种用于多播广播MBS业务的切换的电子设备，包括：
    一个或多个处理器；
    存储装置，用于存储一个或多个程序，当所述一个或多个程序被所述一个或多个处理器执行时，使得所述一个或多个处理器实现如权利要求1至8中任一项所述的MBS业务的切换方法；或实现如权利要求9至13中任一项所述的MBS业务的切换方法。
  18. 一种计算机程序产品，当所述计算机程序产品被执行时，用于实现如权利要求1至8中任一项所述的MBS业务的切换方法；或实现如权利要求9至13中任一项所述的MBS业务的切换方法。
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