WO2022052702A1 - 多播广播业务的通信方法及装置、电子设备、存储介质 - Google Patents

多播广播业务的通信方法及装置、电子设备、存储介质 Download PDF

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Publication number
WO2022052702A1
WO2022052702A1 PCT/CN2021/111400 CN2021111400W WO2022052702A1 WO 2022052702 A1 WO2022052702 A1 WO 2022052702A1 CN 2021111400 W CN2021111400 W CN 2021111400W WO 2022052702 A1 WO2022052702 A1 WO 2022052702A1
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Prior art keywords
mbs
service
request message
rule
function entity
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PCT/CN2021/111400
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English (en)
French (fr)
Inventor
张卓筠
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腾讯科技（深圳）有限公司
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Priority to KR1020227037983A priority Critical patent/KR102644453B1/ko
Priority to EP21865758.3A priority patent/EP4132022A4/en
Priority to JP2022563468A priority patent/JP7412593B2/ja
Publication of WO2022052702A1 publication Critical patent/WO2022052702A1/zh
Priority to US17/982,289 priority patent/US20230055967A1/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
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • 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
    • H04W4/08—User group management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/003—Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment

Definitions

  • the present application relates to the field of computer and communication technologies, and in particular to multicast broadcasting services.
  • the service area requirements of the MBS service cannot be supported, and the access of the MBS service is realized through the control plane, resulting in additional information in the 5G MBS system. order load.
  • 5G MBS Multicast and Broadcast Service
  • the embodiments of the present application provide a communication method and device, an electronic device, and a computer-readable storage medium for a multicast broadcast service, which can not only support the requirements of the MBS service service area, but also realize the access of the MBS service based on the user plane. , reducing the signaling load of the 5G MBS system.
  • a method for communicating a multicast broadcast service comprising: receiving an MBS rule for a multicast broadcast service issued by a policy control function entity, where the MBS rule is that the policy control function entity is based on an application function
  • the service request message sent by the entity is generated, and the service request message contains the information of the MBS service area; according to the MBS rules and the location information of the user terminal itself, it is determined whether the user terminal is located in the MBS service area; if It is determined that the user terminal is located in the MBS service area, and the MBS service is accessed in the MBS service area.
  • a method for communicating a multicast broadcast service including: generating a service request message, where the service request message contains information about an MBS service area, and the service request message is used to trigger a policy control function
  • the entity generates an MBS rule for the user terminal, where the MBS rule is used to instruct the user terminal to access the MBS service within the MBS service area; and sends the service request message to the policy control function entity.
  • a method for communicating a multicast broadcast service includes: receiving a service request message sent by an application function entity, where the service request message contains information about an MBS service area; responding to the service request message to generate an MBS rule for the user terminal, where the MBS rule is used to instruct the user terminal to access the MBS service within the MBS service area; and send the MBS rule to the user terminal.
  • a communication device for a multicast broadcast service comprising: an MBS rule receiving module configured to receive MBS rules for a multicast broadcast service issued by a policy control function entity, where the MBS rule is the policy The control function entity is generated based on the service request message sent by the application function entity, and the service request message contains the information of the MBS service area; the service area determination module is configured to determine the service area according to the MBS rules and the location information of the user terminal itself. whether the user terminal is located in the MBS service area; the MBS service access module is configured to access the MBS service in the MBS service area when the service area determination module determines that the user terminal is located in the MBS service area .
  • a communication device for a multicast broadcast service comprising: a service request message generating module configured to generate a service request message, wherein the service request message contains information of an MBS service area, and the service The request message is used to trigger the policy control function entity to generate an MBS rule for the user terminal, and the MBS rule is used to instruct the user terminal to access the MBS service within the MBS service area; the service request message sending module is configured to send the service request The message is sent to the policy control function entity.
  • a communication device for a multicast broadcast service comprising: a service request message receiving module configured to receive a service request message sent by an application function entity, where the service request message contains information about an MBS service area. information; a service request message response module configured to, in response to the service request message, generate an MBS rule for the user terminal, where the MBS rule is used to instruct the user terminal to access the MBS service within the MBS service area; the MBS rule A sending module, configured to send the MBS rule to the user terminal.
  • an electronic device including a processor and a memory, where computer-readable instructions are stored in the memory, and when the computer-readable instructions are executed by the processor, the multicasting of the above aspects is implemented Communication method for broadcast service.
  • a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor of a computer, the computer is made to execute the communication method of the multicast broadcasting service of the above aspect .
  • 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 instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the communication method of the multicast broadcast service of the above aspect.
  • the application function entity sends a service request message to the policy control function entity, the service request message contains information of the MBS service area, and the policy control function entity generates the MBS according to the received service request message.
  • the MBS rules are used to instruct the user terminals located in the MBS service area to access the MBS service. Therefore, when the user terminal wants to access the MBS service, it will judge whether it is located in the MBS service according to the MBS rules. In the MBS service area, if the judgment is yes, the MBS service can be joined by joining an existing MBS session in the MBS service, or creating a new MBS session.
  • only user terminals located in the MBS service area can access the MBS service, so that the restriction on the MBS service area can be supported, and the user terminals located in the MBS service area can The user terminal inside the system actively accesses the MBS service according to the MBS rules, which can avoid the access to the MBS service through the control plane, so that the 5G MBS system will not have additional signaling load.
  • FIG. 1 is a schematic diagram of a 5G mobile communication network architecture shown in an exemplary embodiment
  • FIG. 2 is a schematic diagram of a business process for supporting an MBS service area under a 5G mobile communication network according to an exemplary embodiment
  • FIG. 3 is a flowchart of a method for communicating a multicast broadcast service according to an exemplary embodiment
  • FIG. 4 is a flowchart of another method for communicating a multicast broadcast service shown in an exemplary embodiment
  • FIG. 5 is a flowchart of another method for communicating a multicast broadcast service shown in an exemplary embodiment
  • FIG. 6 is a block diagram of a communication apparatus for a multicast broadcast service according to an exemplary embodiment
  • FIG. 7 is a block diagram of another communication apparatus for multicast broadcasting service according to an exemplary embodiment
  • FIG. 8 is a block diagram of another communication apparatus for multicast broadcasting service according to an exemplary embodiment
  • FIG. 9 is a schematic structural diagram of an electronic device according to an exemplary embodiment.
  • Example embodiments will now be described more fully with reference to the accompanying drawings.
  • Example embodiments can be embodied in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
  • FIG. 1 is a schematic diagram of a 5G (Fifth Generation Mobile Communication Technology) network architecture defined in the TS23.501 chapter of the 3GPP (3rd Generation Partnership Project) protocol.
  • 5G Fifth Generation Mobile Communication Technology
  • the 5G mobile communication network includes UE (User Equipment, user equipment), (R)AN ((Radio) Access Network, access network), UPF (User Plane Function, user plane function), AMF (Access Network) and Mobility Management Function, access and mobility management function), SMF (Session Management Function, session management function), AF (Application Function, application function), PCF (Policy Control Function, policy control function) and other functional entities.
  • AMF, SMF, and UPF mainly constitute the 5G core network.
  • AMF is mainly responsible for implementing UE access and mobility management
  • SMF is mainly responsible for implementing service session management
  • UPF is mainly responsible for implementing (R)AN and DN (Data Network, Data Network).
  • the various types of functional entities mentioned above may be configured in the communication device or implemented by the communication device.
  • the communication device may be a server, and the server may be an independent physical server, a server cluster or a distributed system composed of multiple physical servers, or a cloud server providing cloud computing services.
  • the technical solutions of the embodiments of the present application are proposed based on the 5G network architecture shown in FIG. 1 , and specifically proposes an implementation process of supporting MBS service areas under a 5G mobile communication network.
  • the method controls the UE to access the MBS service, thereby avoiding the problem in the related art that controlling the UE to join the MBS service by means of the control plane causes the 5G network to generate additional signaling load.
  • network functions may be expanded and added. The specific execution subject is restricted.
  • FIG. 2 is a schematic diagram of a business process for supporting an MBS service area under a 5G mobile communication network according to an exemplary embodiment.
  • the AF first sends a service request message to the PCF (step 1a or step 1b as shown in FIG. 2).
  • the service request message may specifically contain the IP (Internet Protocol, Internet Protocol) address of the MBS service, information on QoS (Quality of Service, quality of service) requirements, information on the MBS service area, and AF identification information. If the service time of the MBS service is a specific time, the service request message also includes information about the effective service time of the MBS. If the MBS service is specifically a multicast (Multicast, also called multicast) service, the service request message also contains multicast group identification information.
  • IP Internet Protocol, Internet Protocol
  • QoS Quality of Service
  • quality of service Quality of service
  • the service request information also contains subdivided identifier information, such as DSCP (Differentiated Services Code Point) or TOS (Type of Service, service type) )/TC (Traffic Class, communication level) field information, based on the /TC used to identify different service flows carried in the TOS/TC field information, to correspond to the QoS requirements of different types of service flows under the same MBS session.
  • DSCP Differentiated Services Code Point
  • TOS Type of Service, service type
  • TC Traffic Class, communication level
  • the service area of the MBS service and the effective service time of the MBS service are independent of each other.
  • the service time of the MBS service is a specific time, but there is no restriction on the service area, then the corresponding service
  • the request message contains the information of the MBS effective service time, and does not contain the information of the MBS service area.
  • the AF can send the service request message to the PCF in at least two ways. As shown in Figure 2, the AF can directly send the service request message to the PCF (for example, step 1b in Figure 2), or the AF can send the service request message to the NEF ( Network Exposure Function) to forward the service request message to the PCF based on the NEF (for example, step 1a in Figure 2). In practical applications, the AF can choose which method to send the service request message to the PCF according to the network deployment in the 5G mobile communication network and whether the AF is credible relative to the 5G mobile communication network. For example, if the AF is relatively 5G mobile communication If the network is credible, the AF directly sends the service request message to the PCF, which is not limited in this embodiment.
  • the AF can directly send the service request message to the PCF (for example, step 1b in Figure 2), or the AF can send the service request message to the NEF ( Network Exposure Function) to forward the service request message to the PCF based on the NEF (for example
  • the NEF can initiate a request to the AF according to the AF identification information contained in the service request message.
  • MBS service requests are authenticated. If the authentication is passed, it means that the NEF accepts the MBS service request, so it forwards the service request message to the PCF, and the NEF also interacts with the UDR (User Data Repository, user data warehouse) to configure and store the information of the multicast group. If the authentication fails, the NEF rejects the MBS service request initiated by the AF, and sends a rejection notification message to the AF.
  • the rejection notification message may contain a rejection reason value.
  • the PCF generates a PCC (Policy Control and Charging, policy control and charging) rule corresponding to the MBS service requested by the AF according to the received service request message, and generates an MBS rule for the UE.
  • the MBS rules include MBS service policies (eg, step 2 in FIG. 2 ).
  • the MBS rules may contain information such as traffic description information, routing information, effective area and/or effective time of the MBS service policies.
  • the traffic description information may include application description information, IP address of MBS service, domain name information, multicast group identification information, connection attribute (used to indicate broadcast service or multicast service) and other information.
  • the routing information may include information such as S-NSSAI (Single Network Slice Selection Assistance Information, single network slice selection assistance information), DNN (Data Network Name, data network noun).
  • S-NSSAI Single Network Slice Selection Assistance Information, single network slice selection assistance information
  • DNN Data Network Name, data network noun.
  • the effective area of the MBS service policy corresponds to the information of the MBS service area contained in the service request message sent by the AF
  • the effective time of the MBS service policy corresponds to the information of the effective service time of the MBS contained in the service request message sent by the AF.
  • the PCF further generates a URSP (user equipment routing selection policy, user terminal routing selection policy) rule according to the received service request message, and the URSP rule contains the MBS rule, so the URSP rule contains the MBS rule.
  • URSP user equipment routing selection policy, user terminal routing selection policy
  • the MBS business strategy is also included.
  • the PCF may trigger the establishment of the MBS session based on the request of the AF.
  • the PCF can send the generated PCC rules to the SMF, and the SMF establishes an MBS session corresponding to the MBS service according to the received PCC rules, and the MBS session only includes the user plane connection from the (R)AN to the anchor UPF. That is, when the MBS session contains only one UPF, the user plane connection of the MBS session only contains the N3 connection between the (R)AN and the anchor UPF; when the MBS session contains multiple UPFs, the user plane of the MBS session
  • the face connection includes both the N3 connection between the (R)AN and the UPF, and the N9 connection between the UPF.
  • the process of establishing the MBS session corresponding to the MBS service by the SMF according to the received PCC rules needs to be implemented jointly by functional entities such as PCF, UPF, SMF, AMF, and (R)AN (for example, step 3 in Figure 2). ).
  • the PCF can obtain SMF information related to the MBS service by interacting with the UDM (Unified Data Management, unified data management), and the SMF can also interact with the UDM to obtain the AMF information related to the MBS service.
  • UDM Unified Data Management, unified data management
  • the SMF can also interact with the UDM to obtain the AMF information related to the MBS service.
  • This embodiment has no limited requirements on the establishment process of the MBS session.
  • the PCF After the MBS session is created, the PCF returns a response message of the MBS service request to the AF (eg, step 4 in FIG. 2 ).
  • the service response message contains the entry information of the MBS service and is used to notify the AF that the response to the service request message has been completed.
  • the service response message may contain DNAI (DN Access Identifier, data network access identifier) and/or address information of the UPF.
  • the PCF may not trigger the establishment of the MBS session. Specifically, after the PCF completes the generation of the MBS rule and the PCC rule, the PCF returns a notification message for the service request message to the AF, where the notification message instructs the PCF to receive or reject the MBS service request initiated by the AF.
  • the PCF will send the session establishment service response message to the AF after the corresponding session establishment is completed.
  • the service response message contains the entry information of the MBS service, which is used for Notifies the AF that the response to the MBS service requested by the service request message has been completed.
  • the service response message may contain DNAI (DN Access Identifier, data network access identifier) and/or address information of the UPF.
  • the PCF will send MBS rules or URSP rules to the UE (eg, step 6 in FIG. 2 ).
  • the mobility management status of the UE itself is understood as the management status of whether the UE is registered in the mobile network, or the management status of the UE and the NAS connection of the mobile core network control plane AMF. In this state, the UE can provide guarantee for the application of various network services.
  • the UE can know the effective service area of the MBS service according to the received MBS rules or URSP rules. Determine whether it is within the effective service area of the MBS service.
  • the MBS service policy includes the MBS effective service time, so the UE can also learn the effective service time of the MBS service according to the received MBS rules or URSP rules.
  • the UE can access the MBS service within the effective service area and effective service time of the MBS service.
  • the process for the UE to access the MBS service may specifically be: when the UE needs to access the MBS service, it will determine whether there is a target MBS service corresponding to the target MBS service that the UE needs to access in the 5G mobile communication network according to the received MBS rules or URSP rules. If it is determined that the MBS session exists, the UE joins the MBS session to access the target MBS service in the joined MBS session (eg, step 7 in FIG. 2 ). If it is determined that there is no MBS session corresponding to the target MBS service, the UE initiates an MBS session creation request for the target MBS service to create a new MBS session in the 5G mobile communication network.
  • the UE sends a session join request message for the MBS to the UPF, and the session join request message may be an IGMP (Internet Group Management Protocol, Internet Group Management Protocol) message.
  • the UPF After receiving the session join request message, the UPF will send a first notification message to the SMF to notify the SMF that a new UE requests to join the MBS session corresponding to the target MBS service, so that the UE joins the MBS session.
  • IGMP Internet Group Management Protocol, Internet Group Management Protocol
  • the UPF after receiving the session join request message, the UPF also sends a second notification message to the service server AS corresponding to the target MBS service, so as to notify the AS that a new UE accesses the target MBS service.
  • the AS may deliver the indicator reporting request information to the UE accessing the target MBS service.
  • the 5G MBS business system can not only support the requirements of the effective service area and effective service time of the MBS business, but also support the MBS business server to be able to perceive the requirement of the UE to join the MBS, and compared with Because the UE is controlled to access the MBS service by means of the control plane, in this embodiment, since the UE actively accesses the MBS service from the user plane based on the MBS rules or URSP rules issued by the PCF, the 5G MBS system can be alleviated to a certain extent. signaling load.
  • FIG. 3 shows a flowchart of a method for communicating a multicast broadcast service according to an exemplary embodiment of the present application.
  • the communication method of the multicast broadcast service can be performed by the UE in the 5G mobile communication network shown in FIG. 1 , and the communication method of the multicast broadcast service includes at least S110 to S130, and the details are as follows:
  • the MBS rules of multicast broadcast service issued by the policy control function entity are received, and the MBS rules are generated by the policy control function entity based on the service request message sent by the application function entity, and the service request message contains information of the MBS service area.
  • the user terminal involved in the communication process of the MBS service is abbreviated as UE
  • the user plane function entity is abbreviated as UPF
  • the access and mobility management function entity is abbreviated as AMF
  • the session management function entity is abbreviated as SMF
  • the application function entity is abbreviated as AF
  • the policy control function entity is abbreviated as PCF.
  • the abbreviations of each functional entity included in the mobile communication network involved in the communication process of the MBS service shown may refer to the abbreviations of each functional entity listed in this embodiment, and may also correspond to A new functional entity with the same function added to the 5G network architecture.
  • the PCF after receiving the service request message sent by the AF, the PCF generates an MBS rule according to the service request message, and sends the generated MBS rule to the UE, so the UE can receive the MBS rule delivered by the PCF.
  • the PCF after receiving the service request message sent by the AF, the PCF will generate a URSP rule according to the service request message, and deliver the URSP rule to the UE. Since the URSP rule contains the MBS rule, the UE can still receive the URSP rule. MBS rules issued by PCF.
  • the service request message contains the information of the MBS service area, so the MBS rule generated by the PCF according to the service request message also contains the MBS service area.
  • the service request message may also contain information about the effective service time of the MBS, so the MBS rule generated by the PCF may also contain the effective service time of the MBS.
  • the UE when the UE registers with the mobile communication network, it can receive the MBS rules issued by the PCF. In other embodiments, when the UE is registered in the mobile communication network and moves into the MBS service area, the UE can receive the MBS rules issued by the PCF.
  • the mobile communication network may be a 5G mobile communication network.
  • S120 it is determined whether the user terminal is located in the MBS service area according to the MBS rule and the location information of the user terminal.
  • the MBS rule includes the MBS service area, so the UE can compare its own location information with the MBS service area included in the MBS rule to determine whether the UE is located in the MBS service area.
  • the location information of the UE itself is located in the MBS service area, it is determined that the UE is located in the MBS service area, and the UE can access the corresponding MBS service. If the location information of the UE itself is not within the MBS service area, it is determined that the UE is not within the MBS service area, and the UE cannot access the corresponding MBS service.
  • the location information of the UE itself may be GPS location data obtained by the UE based on a GPS (Global Positioning System, global positioning system) module configured by the UE itself, or may be location information that can be identified by the 5G mobile communication network, such as cell information. , tracking area information, etc.; the MBS service area can be the effective location range corresponding to the MBS, such as GPS location data, or location information that can be identified by the 5G mobile communication network, such as cell information, tracking area information, etc.
  • GPS Global Positioning System, global positioning system
  • the MBS service is accessed within the MBS service area.
  • the UE determines that it is located in the service area of a certain MBS service, it means that the UE meets the restriction conditions of the corresponding MBS service on the MBS service area, so the UE can access the MBS service in this MBS service area.
  • the UE determines whether there is an MBS session corresponding to the target MBS service in the mobile communication network according to the MBS rules issued by the PCF. If the UE determines that the MBS session exists, it joins the MBS session. to access the target MBS business.
  • the MBS session corresponding to the target MBS service existing in the mobile communication network is the PCF after the PCF generates the PCC rule corresponding to the target MBS service according to the service request information corresponding to the target MBS service sent by the AF, and the PCF sends the PCC rule to the target MBS service.
  • SMF and MBS sessions created in the mobile communication network through SMF.
  • the MBS session only includes the user plane connection between the (R)AN and the anchor UPF, that is, when the MBS session includes only one UPF, the user plane connection of the MBS session only includes the connection between the (R)AN and the anchor UPF.
  • N3 connection when the MBS session includes multiple UPFs, the user plane connection of the MBS session includes both the N3 connection between the (R)AN and the UPF, and the N9 connection between the UPFs.
  • the UE sends a session join request message for the MBS session to the UPF, so as to trigger the UPF to send a first notification message to the SMF through the session join request message, where the first notification message is used to indicate that a new UE requests to join the MBS session.
  • the SMF performs corresponding control processing on the MBS session according to the received first notification message, so that the UE joins the MBS session.
  • the session join request message can also be used to trigger the UPF to send a second notification message for the UE to access the target MBS service to the service server AS corresponding to the target MBS service.
  • the AS can The indicator reporting request information is sent to the UE, thereby realizing that the AS can perceive the requirement of the UE to join the MBS service.
  • the UE initiates an MBS session creation request for the target MBS service to request to create an MBS session corresponding to the target MBS service in the mobile communication network.
  • the UE joins the created MBS session, that is, it can access the target MBS service.
  • the method provided in this embodiment implements the restriction on the service area of the MBS service, and only the UE located in the MBS service area can join the MBS session corresponding to the MBS service area, so that the UE can join the MBS session based on the joined service area.
  • the MBS session accesses the corresponding MBS service.
  • the UE actively accesses the MBS service based on the MBS rules issued by the PCF, so that the joining of the MBS service is based on the user plane method, which can reduce the signaling load of the mobile communication network.
  • FIG. 4 shows a flowchart of a method for communicating a multicast broadcast service according to another exemplary embodiment of the present application.
  • the communication method of the multicast broadcast service can be performed by the AF in the 5G mobile communication network shown in FIG. 1 , and the communication method of the multicast broadcast service at least includes S210 to S220, and the details are as follows:
  • a service request message is generated, the service request message contains information of the MBS service area, the service request message is used to trigger the policy control function entity to generate an MBS rule for the user terminal, and the MBS rule is used to indicate that the user terminal is within the MBS service area Visit MBS Business.
  • the AF in order to meet the requirements of the service area supporting the MBS service, the AF needs to send a service request message to the PCF, so as to trigger the PCF to generate the MBS rules for the UE through the service request message.
  • the service request message is generated by the AF according to the relevant information of the MBS service requested in the mobile communication network. Specifically, if the MBS service requested by the AF has a specific service area, the service request message contains the information of the MBS service area. So that the MBS rule generated by the PCF also includes the information of the MBS service area, and the MBS rule is used to instruct the UE to access the MBS service within the MBS service area.
  • the service request message contains the information of the effective service time of the MBS, so the MBS rule generated by the PCF also contains the information of the effective service time of the MBS, and the MBS rule is used to indicate The UE accesses the MBS service within the MBS service area and within the MBS valid service time.
  • the service request message may also contain information about the IP address and QoS requirements of the MBS service requested by the AF, so that the PCF generates the PCC rules for the MBS service according to the information on the IP address and QoS requirements of the MBS service contained in the service request message. .
  • the PCC rule is used to control the SMF to manage the MBS session, for example, to control the SMF to create an MBS session corresponding to the MBS service requested by the AF in the mobile communication network.
  • the service request message may also contain AF identification information.
  • the service request message is sent to the policy control function entity.
  • the AF may directly send the generated service request message to the PCF, or the AF may send the service request message to the NEF to forward the service request message to the PCF based on the NEF.
  • the AF may select a specific manner of sending a service request message to the PCF according to the network deployment of the mobile communication network and whether the AF is trustworthy relative to the PCF, which is not limited in this embodiment.
  • the service request message sent by the AF to the NEF is forwarded to the PCF after the NEF authenticates the MBS service requested by the AF. Specifically, after receiving the service request message sent by the AF, the NEF authenticates the MBS service requested by the AF according to the AF identification information contained in the service request message. The service request message is forwarded to the PCF.
  • the PCF after sending the service request message of the AF to the PCF, the PCF will generate the MBS rule or URSP rule of the MBS service requested by the AF according to the received service request message, and the URSP rule contains the MBS rule , and also generate the PCC rule of the MBS service to trigger the UE to access the MBS service in the MBS service area through the MBS rule or the URSP rule, and control the SMF to create an MBS corresponding to the MBS service requested by the AF in the mobile communication network through the PCC rule session to support the needs of the MBS service area while reducing the signaling load of the mobile communication network.
  • FIG. 5 shows a flowchart of a method for communicating a multicast broadcast service according to another exemplary embodiment of the present application.
  • the communication method of the multicast broadcast service can be performed by the PCF in the 5G mobile communication network shown in FIG. 1 , and the communication method of the multicast broadcast service includes at least S310 to S330, and the details are as follows:
  • a service request message sent by the application function entity is received, and the service request message contains information of the MBS service area.
  • the service request message received by the PCF may be sent directly or indirectly by the AF. For example, after the AF sends the service request message to the NEF, the service request message is forwarded to the PCF based on the NEF.
  • the information containing the MBS service area in the service request message received by the PCF and sent by the AF may be a location range, indicating that the MBS service requested by the AF can provide services within this location range. If the MBS service requested by the AF also has a specific service time, the service request message also contains information about the effective service time of the MBS service.
  • an MBS rule for the user terminal is generated, and the MBS rule is used to instruct the user terminal to access the MBS service within the MBS service area.
  • the PCF In response to the received service request message, the PCF generates MBS rules for the UE including MBS service policies, such as traffic description information, routing information, and effective area/valid time of MBS service policies.
  • MBS service policies such as traffic description information, routing information, and effective area/valid time of MBS service policies.
  • the traffic description information may include application description information, IP address of the MBS service, domain name information, multicast group identification information, connection attributes and other information.
  • the routing information may include information such as S-NSSAI and DNN.
  • the effective area/effective time of the MBS service policy corresponds to the information of the MBS service area and the information of the effective service time of the MBS contained in the service request message sent by the AF.
  • the PCF may generate a URSP rule for the UE in response to the service request message, where the URSP rule includes an MBS rule, and the MBS rule in the URSP rule is used to indicate that the UE can access the MBS service within the MBS service area.
  • the MBS rules are sent to the user terminal.
  • the PCF when the PCF sends the MSB rule to the UE, it may directly send the generated MBS rule to the UE, or send the generated URSP rule to the UE. Since the URSP rule contains the MBS rule, the UE can receive the MBS rule. MBS rules.
  • the PCF can send MBS rules or URSP rules to the UE when detecting that the UE is registered in the mobile communication network; or when detecting that the UE is registered in the mobile communication network and moves to the MBS service area, send the MBS rules to the UE.
  • the UE sends the MBS rules or URSP rules; or when the UE has registered in the 5G mobile communication network, moves to the MBS service area, and the mobility management state of the UE itself changes to the connected state, sends the MBS rules to the UE or URSP rules, which are not limited in this embodiment.
  • the service request message may also contain information about the IP address and QoS requirements of the MBS service requested by the AF, so that the PCF can, according to the information about the IP address and QoS requirements of the MBS service contained in the service request message, Generate PCC rules for the MBS service.
  • the PCC rule is used to control the SMF to manage the MBS session, for example, to control the SMF to create an MBS session corresponding to the MBS service in the mobile communication network.
  • the MBS session only includes the user plane connection between the (R)AN and the anchor UPF, that is, when the MBS session includes only one UPF, the user plane connection of the MBS session only includes the connection between the (R)AN and the anchor UPF.
  • N3 connection when the MBS session includes multiple UPFs, the user plane connection of the MBS session includes both the N3 connection between the (R)AN and the UPF, and the N9 connection between the UPFs.
  • the UE determines whether it is within the MBS service area according to the received MBS rules or URSP rules and its own location information. In the MBS service area, access the corresponding MBS service in the MBS service area. Specifically, the UE joins the MBS session corresponding to the MBS service in the MBS service area to access the MBS service. Therefore, the present embodiment can support the requirement of the MBS service area, and realize the joining of the MBS service from the user plane, which can reduce the signaling load of the mobile communication network. When there is no established MBS session in the MBS service area, the UE will initiate an MBS session establishment procedure.
  • FIG. 6 is a block diagram of a communication apparatus for a multicast broadcast service according to an exemplary embodiment.
  • the exemplary communication apparatus 400 for a multicast broadcast service may be specifically configured on the UE in the 5G mobile communication network shown in FIG. 1 . .
  • the communication apparatus 400 for the multicast broadcasting service may include an MBS rule receiving module 410 , a service area determining module 420 and an MBS service processing module 430 .
  • the MBS rule receiving module 410 is configured to receive MBS rules for multicast broadcasting services issued by the policy control function entity.
  • the MBS rules are generated by the policy control function entity based on a service request message sent by the application function entity, and the service request message contains MBS services.
  • the service area determination module 420 is configured to determine whether the user terminal is located in the MBS service area according to the MBS rules and the location information of the user terminal itself; the MBS service processing module 430 is configured to determine that the user terminal is located in the MBS service area, when Access MBS services within the MBS service area.
  • the MBS service processing module 430 includes an MBS session determination unit, an MBS session joining unit, and an MBS session creation unit.
  • the MBS session determining unit is configured to determine whether there is an MBS session corresponding to the target MBS service according to the MBS rules and the target MBS service that the user terminal needs to access;
  • the MBS session joining unit is configured to join the MBS session when it is determined that there is an MBS session, to access the target MBS service;
  • the MBS session creation unit is configured to initiate an MBS session creation request for the target MBS service when it is determined that there is no MBS session.
  • the MBS session joining unit is configured to send a session join request message for the MBS session to the user plane functional entity, and the session join request message can be used to trigger the user plane functional entity to send the user terminal to the session management functional entity
  • the first notification message for requesting to join the MBS session can also be used to trigger the user plane function entity to send the second notification message for the user terminal to access the target MBS service to the service server corresponding to the target MBS service.
  • the MBS rule receiving module 410 is configured to receive the URSP rule of the user routing policy supporting multicast service issued by the policy control function entity, where the URSP rule includes the MBS rule.
  • the MBS rule receiving module 410 is configured to receive the MBS rule issued by the policy control function entity when registering in the mobile communication network; or when registering in the mobile communication network and moving to the MBS When in the service area, receive the MBS rules issued by the policy control function entity; or when it has been registered in the mobile communication network and moved to the MBS service area, and the mobility management state is converted to the connected state, the policy control function entity is received.
  • the issued MBS rules is configured to receive the MBS rule issued by the policy control function entity when registering in the mobile communication network; or when registering in the mobile communication network and moving to the MBS
  • receive the MBS rules issued by the policy control function entity or when it has been registered in the mobile communication network and moved to the MBS service area, and the mobility management state is converted to the connected state, the policy control function entity is received.
  • the issued MBS rules is configured to receive the MBS rule issued by the policy control function entity when registering in the mobile communication network; or when registering in the mobile communication network and moving to the MBS When in
  • FIG. 7 is a block diagram of a communication apparatus for multicast broadcasting service shown in another exemplary embodiment.
  • the communication apparatus 500 for the exemplary multicast broadcasting service may be specifically configured in the AF in the 5G mobile communication network shown in FIG. 1 . superior.
  • the communication apparatus 500 of the multicast broadcast service may include a service request message generating module 510 and a service request message sending module 520 .
  • the request message generation module 510 is configured to generate a service request message, the service request message contains information about the MBS service area, and the service request message is used to trigger the policy control function entity to generate MBS rules for user terminals and PCC rules for MBS session management , the MBS rule is used to instruct the user terminal to access the MBS service in the MBS service area, and the PCC rule is used to control the SMF to manage the corresponding MBS session;
  • the service request message sending module 520 is configured to send the service request message to the policy control function entity.
  • the service request message sending module 520 is configured to send the service request message directly to the policy control function entity; or to send the service request message to the network opening function entity, and the network opening function entity forwards the service request message to Policy control functional entity.
  • the service request message further contains information about the MBS valid service time
  • the MBS rule is further used to instruct the user terminal to access the MBS service within the MBS service area and within the MBS valid service time.
  • FIG. 8 is a block diagram of a communication apparatus for a multicast broadcast service shown in another exemplary embodiment, and the communication apparatus 600 for an exemplary multicast broadcast service may be specifically configured in the PCF in the 5G mobile communication network shown in FIG. 1 . superior.
  • the communication apparatus 600 of the multicast broadcast service may include a service request message receiving module 610 , a service request message response module 620 and an MBS rule sending module 630 .
  • the service request message receiving module 610 is configured to receive the service request message sent by the application function entity, and the service request message contains the information of the MBS service area;
  • the service request message response module 620 is configured to respond to the service request message and generate a service request message for the user terminal.
  • the MBS rule is used to instruct the user terminal to access the MBS service within the MBS service area;
  • the MBS rule sending module 630 is configured to send the MBS rule to the user terminal.
  • the communication apparatus 600 for the multicast broadcast service further includes a PCC rule generating module and a PCC rule sending module.
  • the PCC rule generation module is configured to generate policy control and charging PCC rules in response to the service request message.
  • the PCC rules are used to control the session management function entity to manage the MBS session; the PCC rule sending module is configured to send the PCC rules to the session management function entity. .
  • Embodiments of the present application further provide an electronic device, including a processor and a memory, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, realize the multicast broadcasting service as described above communication method.
  • FIG. 9 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 1600 includes a central processing unit (Central Processing Unit, CPU) 1601, which can be loaded into random A program in a memory (Random Access Memory, RAM) 1603 is accessed to perform various appropriate actions and processes, such as performing the methods described in the above embodiments.
  • a memory Random Access Memory, RAM
  • various programs and data required for system operation are also stored.
  • the CPU 1601, the ROM 1602, and the RAM 1603 are connected to each other through a bus 1604.
  • An Input/Output (I/O) interface 1605 is also connected to the bus 1604 .
  • the following components are connected to the I/O interface 1605: an input section 1606 including a keyboard, a mouse, etc.; an output section 1607 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc. ; a storage part 1608 including a hard disk and the like; and a communication part 1609 including a network interface card such as a LAN (Local Area Network) card, a modem, and the like.
  • the communication section 1609 performs communication processing via a network such as the Internet.
  • Drivers 1610 are also connected to I/O interface 1605 as needed.
  • a removable medium 1611 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is mounted on the drive 1610 as needed so that a computer program read therefrom is installed into the storage section 1608 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 through the communication portion 1609, and/or installed from the removable medium 1611.
  • 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, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or a combination of any of the above. More specific examples of 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.
  • Another aspect of the present application also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the foregoing communication method for a multicast broadcast service.
  • the computer-readable storage medium may be included in the electronic device described in the above embodiments, or may exist alone without being assembled into the electronic device.
  • Another aspect of the present application also provides a computer program product or computer program comprising computer instructions stored in a computer-readable storage medium.
  • the processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the method for communicating the multicast broadcast service provided in the above embodiments.

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Abstract

本申请的实施例揭示了一种多播广播业务的通信方法及装置，该方法包括：接收策略控制功能实体下发的多播广播业务MBS规则，所述MBS规则是所述策略控制功能实体基于应用功能实体发送的业务请求消息生成的，所述业务请求消息中含有MBS服务区域的信息；根据所述MBS规则和用户终端自身的位置信息，确定所述用户终端是否位于所述MBS服务区域内；若确定所述用户终端位于所述MBS服务区域内，则在所述MBS服务区域内访问MBS业务。本申请实施例的技术方案能够支持MBS服务区域，并且，位于MBS服务区域内的用户终端根据MBS规则主动接入到MBS业务中，使得5G MBS系统不会有额外的信令负荷。

Description

多播广播业务的通信方法及装置、电子设备、存储介质
本申请要求于2020年09月08日提交中国专利局、申请号为202010939112.9、申请名称为“多播广播业务的通信方法及装置、电子设备、存储介质”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，具体涉及多播广播业务。
背景技术
在5G MBS(Multicast and Broadcast Service，多播广播业务)系统中，无法支持MBS业务的服务区域的需求，且MBS业务的接入是通过控制面的方式实现，导致5G MBS系统会有额外的信令负荷。
发明内容
本申请的实施例提供了一种多播广播业务的通信方法及装置、电子设备、计算机可读存储介质，不仅能够支持MBS业务服务区域的需求，还基于用户面的方式实现MBS业务的接入，减轻了5G MBS系统的信令负荷。
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。
根据本申请的一个方面，提供了一种多播广播业务的通信方法，包括：接收策略控制功能实体下发的多播广播业务MBS规则，所述MBS规则是所述策略控制功能实体基于应用功能实体发送的业务请求消息生成的，所述业务请求消息中含有MBS服务区域的信息；根据所述MBS规则和用户终端自身的位置信息，确定所述用户终端是否位于所述MBS服务区域内；若确定所述用户终端位于所述MBS服务区域内，则在所述MBS服务区域内访问MBS业务。
根据本申请的一个方面，还提供一种多播广播业务的通信方法，包括：生成业务请求消息，所述业务请求消息中含有MBS服务区域的信息，所述业务请求消息用于触发策略控制功能实体生成针对用户终端的MBS规则，所述MBS规则用于指示用户终端在所述MBS服务区域内访问MBS业务；将所述业务请求消息发送至所述策略控制功能实体。
根据本申请的一个方面，还提供一种多播广播业务的通信方法，包括：接收应用功能实体发送的业务请求消息，所述业务请求消息中含有MBS服务区域 的信息；响应于所述业务请求消息，生成针对用户终端的MBS规则，所述MBS规则用于指示所述用户终端在所述MBS服务区域内访问MBS业务；向所述用户终端发送所述MBS规则。
根据本申请的一个方面，提供一种多播广播业务的通信装置，包括：MBS规则接收模块，配置为接收策略控制功能实体下发的多播广播业务MBS规则，所述MBS规则是所述策略控制功能实体基于应用功能实体发送的业务请求消息生成的，所述业务请求消息中含有MBS服务区域的信息；服务区域确定模块，配置为根据所述MBS规则和用户终端自身的位置信息，确定所述用户终端是否位于所述MBS服务区域内；MBS业务访问模块，配置为在所述服务区域确定模块确定所述用户终端位于所述MBS服务区域内时，在所述MBS服务区域内访问MBS业务。
根据本申请的一个方面，还提供一种多播广播业务的通信装置，包括：业务请求消息生成模块，配置为生成业务请求消息，所述业务请求消息中含有MBS服务区域的信息，所述业务请求消息用于触发策略控制功能实体生成针对用户终端的MBS规则，所述MBS规则用于指示用户终端在所述MBS服务区域内访问MBS业务；业务请求消息发送模块，配置为将所述业务请求消息发送至所述策略控制功能实体。
根据本申请的一个方面，还提供一种多播广播业务的通信装置，包括：业务请求消息接收模块，配置为接收应用功能实体发送的业务请求消息，所述业务请求消息中含有MBS服务区域的信息；业务请求消息响应模块，配置为响应于所述业务请求消息，生成针对用户终端的MBS规则，所述MBS规则用于指示所述用户终端在所述MBS服务区域内访问MBS业务；MBS规则发送模块，配置为向所述用户终端发送所述MBS规则。
根据本申请的一个方面，提供了一种电子设备，包括处理器及存储器，所述存储器上存储有计算机可读指令，所述计算机可读指令被所述处理器执行时实现以上方面的多播广播业务的通信方法。
根据本申请的一个方面，提供了一种计算机可读存储介质，其上存储有计算机程序，当所述计算机程序被计算机的处理器执行时，使计算机执行以上方面的多播广播业务的通信方法。
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以上方面的多播广播业务的通信方法。
在本申请的一些实施例提供的技术方案中，由应用功能实体向策略控制功能实体发送业务请求消息，业务请求消息中含有MBS服务区域的信息，策略控制功能实体根据接收到业务请求消息生成MBS规则，并将MBS规则发送给用户终端，MBS规则用于指示位于MBS服务区域内的用户终端接入到MBS业务中，因此用户终端想要接入MBS业务时，会根据MBS规则判断自身是否位于MBS服务区内，如果判断为是，则可以通过加入该MBS业务中已有的MBS会话，或者创建新的MBS会话等方式加入MBS业务。
由此可知，在本申请的实施例提供的技术方案中，只有位于MBS服务区域内的用户终端才能够接入到MBS业务中，从而能够支持对于MBS服务区域的限制，并且，位于MBS服务区域内的用户终端根据MBS规则主动地接入到MBS业务中，能够避免通过控制面的方式实现MBS业务的接入，使得5G MBS系统不会有额外的信令负荷。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本申请。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本申请的实施例，并与说明书一起用于解释本申请的原理。显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术者来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。在附图中：
图1是一示例性实施例示出的一种5G移动通信网络架构的示意图；
图2是一示例性实施例示出的一种在5G移动通信网络下支持MBS服务区域的业务流程示意图；
图3是一示例性实施例示出的一种多播广播业务的通信方法的流程图；
图4是一示例性实施例示出的另一种多播广播业务的通信方法的流程图；
图5是一示例性实施例示出的另一种多播广播业务的通信方法的流程图；
图6是一示例性实施例示出的一种多播广播业务的通信装置的框图；
图7是一示例性实施例示出的另一种多播广播业务的通信装置的框图；
图8是一示例性实施例示出的另一种多播广播业务的通信装置的框图；
图9是一示例性实施例示出的一种电子设备的结构示意图。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的范例；相反，提供这些实施方式使得本申请将更加全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。
此外，所描述的特征、结构或特性可以以任何合适的方式结合在一个或更多实施例中。在下面的描述中，提供许多具体细节从而给出对本申请的实施例的充分理解。然而，本领域技术人员将意识到，可以实践本申请的技术方案而没有特定细节中的一个或更多，或者可以采用其它的方法、组元、装置、步骤等。在其它情况下，不详细示出或描述公知方法、装置、实现或者操作以避免模糊本申请的各方面。
附图中所示的方框图仅仅是功能实体，不一定必须与物理上独立的实体相对应。即，可以采用软件形式来实现这些功能实体，或在一个或多个硬件模块或集成电路中实现这些功能实体，或在不同网络和/或处理器装置和/或微控制器装置中实现这些功能实体。
附图中所示的流程图仅是示例性说明，不是必须包括所有的内容和操作/步骤，也不是必须按所描述的顺序执行。例如，有的操作/步骤还可以分解，而有的操作/步骤可以合并或部分合并，因此实际执行的顺序有可能根据实际情况改变。
还需要说明的是：在本申请中提及的“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。
请参阅图1，图1是在3GPP(3rd Generation Partnership Project，第三代合 作伙伴计划)协议的TS23.501章节中定义的5G(第五代移动通信技术)网络架构的示意图。
如图1所示，5G移动通信网络包括UE(User Equipment，用户设备)、(R)AN((Radio)Access Network，接入网)、UPF(User Plane Function，用户面功能)、AMF(Access and Mobility Management Function，接入与移动性管理功能)、SMF(Session Management Function，会话管理功能)、AF(Application Function，应用功能)、PCF(Policy Control Function，策略控制功能)等功能实体。AMF、SMF以及UPF主要构成5G核心网，其中，AMF主要负责实现UE接入和移动性管理，SMF主要负责实现业务会话的管理，UPF主要负责实现(R)AN与DN(Data Network，数据网络)之间的数据包路由转发。上述提及的各类功能实体可以配置在通信设备中，或者通过通信设备实现。该通信设备可以是服务器，该服务器可以是独立的物理服务器，也可以是多个物理服务器构成的服务器集群或者分布式系统，还可以是提供云计算服务的云服务器。
本申请实施例的技术方案则是基于图1中示出的5G网络架构提出的，具体提出一种在5G移动通信网络下支持MBS服务区域的实现流程，在此实现流程中，基于用户面的方式控制UE接入MBS业务，从而能够避免相关技术中通过控制面的方式控制UE加入MBS业务导致5G网络产生额外的信令负荷的问题。需要说明的是，5G网络架构支持MBS业务时，可能会进行网络功能的扩展和新增，该方案也可以进一步扩展到新增的实现相似功能的网络功能上，而不对本方案新增功能的具体执行主体进行限制。
图2是一示例性实施例示出的一种在5G移动通信网络下支持MBS服务区域的业务流程示意图。如图2所示，在此示例性的业务流程中，AF首先向PCF发送业务请求消息(如图2示出的步骤1a或步骤1b)。
业务请求消息中具体可以含有MBS业务的IP(Internet Protocol，网际互连协议)地址、QoS(Quality of Service，服务质量)需求的信息、MBS服务区域的信息、AF标识信息。如果该MBS业务的服务时间是特定的时间，业务请求消息中还包含MBS有效服务时间的信息。如果该MBS业务具体为组播(Multicast，也称为多播)业务，该业务请求消息中还含有多播组标识信息。如果该MBS业务具有细分的不同的QoS需求，业务请求信息中则还含有细分的 区分符信息，例如含有DSCP(Differentiated Services Code Point，差分服务代码点)或者TOS(Type of Service，服务类型)/TC(Traffic Class，通信级别)字段信息，以基于TOS/TC字段信息中携带的用于标识不同的业务流的/TC，来对应同一个MBS会话下不同类型的业务流的QoS需求。
需要说明的是，MBS业务的服务区域与MBS业务的有效服务时间是相互独立的，在一些实施例中，如果MBS业务的服务时间是特定的时间，但是对于服务区域没有限制，那么相应的业务请求消息中则含有MBS有效服务时间的信息，且不含有MBS服务区域的信息。
AF向PCF发送业务请求消息的方式可以包括至少两种，如图2所示，AF可以直接向PCF发送业务请求消息(例如图2中的步骤1b)，或者AF将业务请求消息发送给NEF(Network Exposure Function，网络开放功能)，以基于NEF将业务请求消息转发给PCF(例如图2中的步骤1a)。在实际应用中，AF可以根据5G移动通信网络中的网络部署情况、AF相对5G移动通信网络是否可信等情况具体选择通过哪种方式向PCF发送业务请求消息，例如，若AF相对5G移动通信网络是可信的，AF则将业务请求消息直接发送给PCF，本实施例并不对此进行限制。
在AF向NEF发送业务请求消息，并基于NEF向PCF转发业务请求消息的实施例中，NEF在接收到AF发送的业务请求消息之后，可以根据业务请求消息中包含的AF标识信息对AF发起的MBS业务请求进行鉴权。若鉴权通过，则表示NEF接受该MBS业务请求，因此将业务请求消息转发给PCF，并且NEF还会与UDR(User Data Repository，用户数据仓库)交互，以配置存储多播组的信息。若鉴权不通过，NEF则拒绝AF发起的MBS业务请求，并发送拒绝通知消息给AF，拒绝通知消息中可以含有拒绝原因值。
PCF根据接收到的业务请求消息，生成AF所请求MBS业务对应的PCC(Policy Control and Charging，策略控制和计费)规则，以及生成针对UE的MBS规则。MBS规则包含MBS业务策略(例如图2中的步骤2)，例如，MBS规则中可以含有流量描述信息、路由选择信息、MBS业务策略的有效区域和/或有效时间等信息。流量描述信息可以包括应用描述信息，MBS业务的IP地址、域名信息、多播组标识信息、连接属性(用于指示广播业务或者多播业务)等 信息。路由选择信息可以包括S-NSSAI(Single Network Slice Selection Assistance Information，单个网络切片选择协助信息)、DNN(Data Network Name，数据网络名词)等信息。MBS业务策略的有效区域对应于AF发送的业务请求消息中含有的MBS服务区域的信息，MBS业务策略的有效时间对应于AF发送的业务请求消息中含有的MBS有效服务时间的信息。
在一些示例性的实施例中，PCF根据接收到的业务请求消息，还生成URSP(user equipment routing selection policy，用户终端路由选择策略)规则，该URSP规则中包含有MBS规则，因此该URSP规则中也包含有MBS业务策略。
在一些实施例中，PCF可以基于AF的请求触发建立MBS会话。具体的，PCF可以将生成的PCC规则发送给SMF，SMF根据接收到PCC规则建立MBS业务对应的MBS会话，该MBS会话只包含(R)AN到锚点UPF的用户面连接。即当该MBS会话只包含一个UPF时，该MBS会话的用户面连接只包含(R)AN与该锚点UPF之间的N3连接；当该MBS会话包含多个UPF时，该MBS会话的用户面连接既包含(R)AN与UPF之间的N3连接，也包含UPF之间的N9连接。
如图2所示，SMF根据接收到PCC规则，建立MBS业务对应的MBS会话的过程需要由PCF、UPF、SMF、AMF以及(R)AN等功能实体共同参与实现(例如图2中的步骤3)。在建立MBS会话的过程中，PCF可以通过与UDM(Unified Data Management，统一数据管理)交互来获取与MBS业务有关的SMF信息，SMF也可以与UDM交互来获取与MBS业务有关的AMF信息。本实施例对MBS会话的建立过程没有限定要求。
MBS会话创建后，PCF向AF返回MBS业务请求的响应消息(例如图2中的步骤4)，该业务响应消息中含有MBS业务的入口信息，用于通知AF已完成业务请求消息的响应。业务响应消息可以含有DNAI(DN Access Identifier，数据网络接入标识)和/或UPF的地址信息。
在另一些实施例中，PCF在接收到AF发送的业务请求消息后，也可以不触发建立MBS会话。具体的，PCF在完成MBS规则和PCC规则的生成后，PCF向AF返回针对该业务请求消息的通知消息，该通知消息指示PCF接收或拒绝AF发起的MBS业务请求。而当UE触发建立AF所请求的MBS业务的会话时，PCF会在相应的会话建立完成后，发送会话建立的业务响应消息给AF，该业务响 应消息中含有该MBS业务的入口信息，用于通知AF已完成业务请求消息所请求MBS业务的响应。业务响应消息可以含有DNAI(DN Access Identifier，数据网络接入标识)和/或UPF的地址信息。
由此可知，通过上述过程，若AF向PCF发送了多个业务请求消息，或者向PCF发送了关于请求多个MBS业务的业务请求消息，则可以在5G移动通信网络中创建多个MBS会话。
当UE注册到5G移动通信网络中时，或者当UE已注册到5G移动通信网络中、且移动至MBS服务区域内时，或者当UE已注册到5G移动通信网络中、且移动至MBS服务区域内、且UE自身的移动性管理状态转换为连接态时(例如图2的步骤5)，PCF会向UE发送MBS规则或者URSP规则(例如图2的步骤6)。其中，UE自身的移动性管理状态理解为是对UE是否注册到移动网络中，或者UE与移动核心网控制面AMF的NAS连接等方面的管理状态，UE在移动性管理状态转换为连接态的状态下，能够为UE对于各种网络服务的应用提供保证。
由于MBS规则或者URSP规则中含有MBS业务策略，MBS业务策略中含有MBS服务区域，因此UE根据接收到的MBS规则或者URSP规则能够获知MBS业务的有效服务区域，UE根据自身的位置信息，即可确定自身是否位于MBS业务的有效服务区域内。并且，在MBS业务对于服务时间有具体限制的情况下，MBS业务策略中含有MBS有效服务时间，因此UE根据接收到的MBS规则或者URSP规则还能够获知MBS业务的有效服务时间。
若UE自身位于MBS业务的有效服务区域内，且当前时间也处于MBS业务的有效服务时间内，UE则可以在MBS业务的有效服务区域和有效服务时间内访问MBS业务。
示例性的，UE访问MBS业务的流程具体可以为：当UE需要接入MBS业务时，会根据接收到的MBS规则或者URSP规则，确定5G移动通信网络中是否存在UE需要访问的目标MBS业务对应的MBS会话，若确定存在该MBS会话，UE加入至该MBS会话中，以在加入的MBS会话中访问该目标MBS业务(例如图2的步骤7)。若确定不存在目标MBS业务对应的MBS会话，UE则发起针对目标MBS业务的MBS会话创建请求，以在5G移动通信网络中创建新的MBS会话。
具体的，UE确定存在目标MBS业务对应的MBS会话后，向UPF发送针对 该MBS的会话加入请求消息，会话加入请求消息可以是IGMP(Internet Group Management Protocol，网际组管理协议)消息。UPF接收到会话加入请求消息后，会向SMF发送第一通知消息，以通知SMF有新的UE请求加入目标MBS业务对应的MBS会话，从而使UE加入到该MBS会话中。
在另外的一些实施例中，UPF接收到会话加入请求消息后，还向目标MBS业务对应的业务服务器AS发送第二通知消息，以通知AS有新的UE接入目标MBS业务。AS接收到第二通知消息后，可以向接入目标MBS业务的该UE下发指标上报请求信息。
由此，基于图2所示的业务流程，使得5G MBS业务系统不仅能够支持MBS业务的有效服务区域和有效服务时间的需求，还支持MBS业务服务器能够感知UE加入MBS的需求，并且，相比于通过控制面的方式控制UE接入MBS业务，本实施例中由于UE是基于PCF下发的MBS规则或者URSP规则从用户面主动接入MBS业务的，从而能够在一定程度上减轻5G MBS系统的信令负荷。
图3示出了根据本申请的一个示例性实施例的多播广播业务的通信方法的流程图。该多播广播业务的通信方法可以由图1所示的5G移动通信网络中的UE来执行，该多播广播业务的通信方法至少包括S110至S130，详细介绍如下：
在S110中，接收策略控制功能实体下发的多播广播业务MBS规则，MBS规则是策略控制功能实体基于应用功能实体发送的业务请求消息生成的，业务请求消息中含有MBS服务区域的信息。
首先需要说明的是，本实施例将MBS业务的通信过程中涉及的用户终端简称为UE，用户面功能实体简称UPF，接入与移动性管理功能实体简称为AMF，会话管理功能实体简称为SMF，应用功能实体简称为AF，策略控制功能实体简称为PCF。
并且在下述的各个实施例中，所示出的MBS业务的通信过程中涉及的移动通信网络中含有的各个功能实体的简称可以参照本实施例中列举的各个功能实体的简称，也可以对应为5G网络架构中新增的具备相同功能的功能实体。
在一些实施例中，PCF接收到AF发送的业务请求消息后，会根据业务请求消息生成MBS规则，并将生成的MBS规则发送给UE，因此UE可以接收到PCF下发的MBS规则。在另外的实施例中，PCF接收到AF发送的业务请求消息后， 会根据业务请求消息生成URSP规则，并将URSP规则下发给UE，由于URSP规则中包含有MBS规则，因此UE仍可以接收到PCF下发的MBS规则。
业务请求消息中含有MBS服务区域的信息，因此PCF根据业务请求消息生成的MBS规则中也包含有MBS服务区域。业务请求消息中还可以含有MBS有效服务时间的信息，因此PCF所生成的MBS规则中还可以包含有MBS有效服务时间。
在一些实施例中，UE在注册到移动通信网络中时，可以接收到PCF下发的MBS规则。在另一些实施例中，UE在已注册到移动通信网络中、且移动至MBS服务区域内时，可以接收到PCF下发的MBS规则。其中，移动通信网络可以是5G移动通信网络。
在S120中，根据MBS规则和用户终端自身的位置信息，确定用户终端是否位于MBS服务区域内。
如前所述的，MBS规则中包含有MBS服务区域，因此UE可以将自身的位置信息与MBS规则中含有的MBS服务区域进行对比，以确定UE是否位于该MBS服务区域内。
若UE自身的位置信息位于MBS服务区域内，则确定UE位于该MBS服务区域内，UE则可以访问相应的MBS业务。若UE自身的位置信息不在该MBS服务区域内，则确定UE未在该MBS服务区域内，UE则无法访问相应的MBS业务。
示例性的，UE自身的位置信息可以是UE基于自身配置的GPS(Global Positioning System，全球定位系统)模块获取到的GPS位置数据，也可以是5G移动通信网络可以识别的位置信息，比如小区信息，跟踪区信息等；MBS服务区域可以是MBS对应的有效位置范围，例如可以是GPS位置数据，也可以是5G移动通信网络可以识别的位置信息，比如小区信息，跟踪区信息等。
在S130中，若确定用户终端位于MBS服务区域内，则在MBS服务区域内访问该MBS业务。
在本实施例中，若UE确定自身位于某个MBS业务的服务区域内，则表示UE符合相应MBS业务对于MBS服务区域的限制条件，因此UE可以在此MBS服务区域内访问该MBS业务。
当UE确定需要访问的目标MBS业务时，根据PCF下发的MBS规则，确定 移动通信网络中是否存在目标MBS业务对应的MBS会话，若UE确定存在该MBS会话，则加入到该MBS会话中，以访问目标MBS业务。
应当理解的是，移动通信网络中存在的目标MBS业务对应的MBS会话，是PCF根据AF发送的目标MBS业务对应的业务请求信息生成目标MBS业务对应的PCC规则后，PCF将该PCC规则发送给SMF，并通过SMF在移动通信网络中创建的MBS会话。该MBS会话只包含(R)AN到锚点UPF的用户面连接，即当该MBS会话只包含一个UPF时，该MBS会话的用户面连接只包含(R)AN与该锚点UPF之间的N3连接；当该MBS会话包含多个UPF时，该MBS会话的用户面连接既包含(R)AN与UPF之间的N3连接，也包含UPF之间的N9连接。
UE向UPF发送针对该MBS会话的会话加入请求消息，以通过该会话加入请求消息触发UPF向SMF发送第一通知消息，该第一通知消息用于指示有新的UE请求加入该MBS会话。SMF根据接收到的第一通知消息，对该MBS会话进行相应的控制处理，以使得UE加入到该MBS会话中。
在另外的实施例中，会话加入请求消息还可以用于触发UPF向目标MBS业务对应的业务服务器AS发送该UE接入目标MBS业务的第二通知消息，AS接收到第二通知消息后，可以向该UE发送指标上报请求信息，由此实现AS能够感知UE加入MBS业务的需求。
若确定移动通信网络中不存在目标MBS业务对应的MBS会话，UE则发起针对目标MBS业务的MBS会话创建请求，以请求在移动通信网络中创建目标MBS业务对应的MBS会话。UE加入到创建好的MBS会话中，即能够访问目标MBS业务。
由此可以得出，本实施例提供的方法实现了对于MBS业务的服务区域的限制，只有位于MBS服务区域内的UE才能够加入到该MBS服务区域对应的MBS会话中，从而能够基于加入的MBS会话访问相应的MBS业务。UE基于PCF下发的MBS规则主动地接入到MBS业务中，使得MBS业务的加入是基于用户面的方式，能够减轻移动通信网络的信令负荷。
图4示出了根据本申请的另一个示例性实施例的多播广播业务的通信方法的流程图。该多播广播业务的通信方法可以由图1所示的5G移动通信网络中的AF来执行，该多播广播业务的通信方法至少包括S210至S220，详细介绍如下：
在S210中，生成业务请求消息，业务请求消息中含有MBS服务区域的信息，业务请求消息用于触发策略控制功能实体生成针对用户终端的MBS规则，MBS规则用于指示用户终端在MBS服务区域内访问MBS业务。
如前述实施例中描述的，为实现支持MBS业务的服务区域的需求，AF需要向PCF发送业务请求消息，以通过业务请求消息触发PCF生成针对UE的MBS规则。
业务请求消息是AF根据需要在移动通信网络中请求的MBS业务的相关信息生成的，具体的，若AF所请求的MBS业务具有特定的服务区域，业务请求消息中则含有MBS服务区域的信息，以使得PCF生成的MBS规则中也包含有MBS服务区域的信息，该MBS规则用于指示UE在MBS服务区域内访问MBS业务。
若AF所请求的MBS业务具有特定的服务时间，业务请求消息中则含有MBS有效服务时间的信息，因此PCF所生成的MBS规则中还包含有MBS有效服务时间的信息，该MBS规则用于指示UE在MBS服务区域内、且在MBS有效服务时间内访问该MBS业务。
业务请求消息中还可以含有AF所请求的MBS业务的IP地址和QoS需求的信息，以使得PCF根据业务请求消息中含有的MBS业务的IP地址和QoS需求的信息，生成该MBS业务的PCC规则。该PCC规则用于控制SMF对MBS会话进行管理，例如控制SMF在移动通信网络中创建AF所请求的MBS业务对应的MBS会话。在一些实施例中，业务请求消息还可以含有AF标识信息。
在S220中，将业务请求消息发送至策略控制功能实体。
在本实施例中，AF可以将生成的业务请求消息直接发送至PCF，或者AF可以向NEF发送该业务请求消息，以基于NEF将该业务请求消息转发至PCF。在实际应用中，AF可以根据移动通信网络的网络部署以及AF相对PCF是否可信等情况选择向PCF发送业务请求消息的具体方式，本实施例不对此进行限制。
在一些实施例中，AF发送给NEF的业务请求消息，是NEF对AF请求的MBS业务进行鉴权通过之后转发至PCF的。具体的，NEF在接收到AF发送的业务请求消息后，根据该业务请求消息含有的AF标识信息，对AF请求的MBS业务进行鉴权，若通过鉴权则表示NEF接收AF的请求，并将该业务请求消息转发给 PCF。
如前述实施例中描述的，将AF的业务请求消息发送给PCF后，PCF会根据接收到的业务请求消息生成AF所请求的MBS业务的MBS规则或者URSP规则，该URSP规则中含有该MBS规则，还生成该MBS业务的PCC规则，以通过MBS规则或者URSP规则触发UE在MBS服务区域内访问MBS业务，并通过PCC规则控制SMF在移动通信网络中创建满足AF所请求的MBS业务对应的MBS会话，以支持MBS服务区域的需求，同时减轻移动通信网络的信令负荷。
其中，AF将业务请求消息发送给PCF之后的详细流程请参见前述实施例及下述实施例中描述的内容，本处不进行赘述。
图5示出了根据本申请的另一个示例性实施例的多播广播业务的通信方法的流程图。该多播广播业务的通信方法可以由图1所示的5G移动通信网络中的PCF来执行，该多播广播业务的通信方法至少包括S310至S330，详细介绍如下：
在S310中，接收应用功能实体发送的业务请求消息，业务请求消息中含有MBS服务区域的信息。
在本实施例中，PCF接收到的业务请求消息可以是AF直接发送的或者间接发送的，例如AF向NEF发送业务请求消息后，基于NEF将此业务请求消息转发给PCF。
PCF接收AF发送的业务请求消息中含有MBS服务区域的信息可以是一个位置范围，表示AF所请求的MBS业务可以在此位置范围内提供服务。如果AF所请求的MBS业务还具有特定的服务时间，业务请求消息中则还含有MBS业务有效服务时间的信息。
在S320中，响应于业务请求消息，生成针对用户终端的MBS规则，MBS规则用于指示用户终端在MBS服务区域内访问MBS业务。
PCF响应于接收到的业务请求消息，生成针对UE的MBS规则中包含MBS业务策略，例如可以含有流量描述信息、路由选择信息、MBS业务策略的有效区域/有效时间等信息。流量描述信息可以包括应用描述信息，MBS业务的IP地址、域名信息、多播组标识信息、连接属性等信息。路由选择信息可以包括S-NSSAI、DNN等信息。MBS业务策略的有效区域/有效时间，对应于AF发送的业务请求消息中含有的MBS服务区域的信息以及MBS有效服务时间的信息。
或者，PCF响应于业务请求消息，可以生成针对UE的URSP规则，该URSP规则中包含有MBS规则，该URSP规则中的MBS规则用于指示UE在MBS服务区域内可以访问该MBS业务。
在S330中，向用户终端发送MBS规则。
在本实施例中，PCF向UE发送MSB规则可以是直接将生成MBS规则发送给UE，或者是将生成的URSP规则发送给UE，由于URSP规则中包含有该MBS规则，因此UE能够接收到该MBS规则。
此外，PCF可以在检测到UE注册到移动通信网络中时，向该UE发送MBS规则或者URSP规则；或者是在检测到UE注册到移动通信网络中、且移动至MBS服务区域内时，向该UE发送MBS规则或者URSP规则；或者是当UE已注册到5G移动通信网络中、且移动至MBS服务区域内、且UE自身的移动性管理状态转换为连接态时，向该UE发送MBS规则或者URSP规则，本实施例不对此进行限制。
在另外的实施例中，业务请求消息中还可以含有AF所请求的MBS业务的IP地址和QoS需求的信息，以使得PCF根据业务请求消息中含有的MBS业务的IP地址和QoS需求的信息，生成该MBS业务的PCC规则。该PCC规则用于控制SMF对MBS会话进行管理，例如控制SMF在移动通信网络中创建该MBS业务对应的MBS会话。该MBS会话只包含(R)AN到锚点UPF的用户面连接，即当该MBS会话只包含一个UPF时，该MBS会话的用户面连接只包含(R)AN与该锚点UPF之间的N3连接；当该MBS会话包含多个UPF时，该MBS会话的用户面连接既包含(R)AN与UPF之间的N3连接，也包含UPF之间的N9连接。
如前述实施例中描述的，PCF向UE下发MBS规则或URSP规则后，UE根据接收到的MBS规则或者URSP规则，以及自身的位置信息确定自身是否处于MBS服务区域内，若确定UE处于该MBS服务区域内，则在此MBS服务区域内访问相应的MBS业务。具体地，UE在此MBS服务区域内加入MBS业务对应的MBS会话，以访问此MBS业务。由此，本实施例能够支持MBS服务区域的需求，并从用户面实现了MBS业务的加入，能够减轻移动通信网络的信令负荷。当该MBS服务区域内没有已经建立的MBS会话时，UE会发起MBS会话建立流程。
图6是一示例性实施例示出的一种多播广播业务的通信装置的框图，该示例性的多播广播业务的通信装置400具体可以配置在图1所示5G移动通信网络中的UE上。
如图6所示，在一示例性实施例中，该多播广播业务的通信装置400可以包括MBS规则接收模块410、服务区域确定模块420和MBS业务处理模块430。其中，MBS规则接收模块410配置为接收策略控制功能实体下发的多播广播业务MBS规则，MBS规则是策略控制功能实体基于应用功能实体发送的业务请求消息生成的，业务请求消息中含有MBS服务区域的信息；服务区域确定模块420配置为根据MBS规则和用户终端自身的位置信息，确定用户终端是否位于MBS服务区域内；MBS业务处理模块430配置为在确定用户终端位于MBS服务区域内时，在MBS服务区域内访问MBS业务。
在另一示例性实施例中，MBS业务处理模块430包括MBS会话确定单元、MBS会话加入单元、MBS会话创建单元。MBS会话确定单元配置为根据MBS规则和用户终端需要访问的目标MBS业务，确定是否存在与目标MBS业务对应的MBS会话；MBS会话加入单元配置为在确定存在MBS会话时，加入到MBS会话中，以访问目标MBS业务；MBS会话创建单元配置为在确定不存在MBS会话时，发起针对目标MBS业务的MBS会话创建请求。
在另一示例性实施例中，MBS会话加入单元配置为向用户面功能实体发送针对MBS会话的会话加入请求消息，会话加入请求消息可以用于触发用户面功能实体向会话管理功能实体发送用户终端请求加入MBS会话的第一通知消息，也可以用于触发用户面功能实体向目标MBS业务对应的业务服务器发送用户终端接入目标MBS业务的第二通知消息。
在另一示例性实施例中，MBS规则接收模块410配置为接收策略控制功能实体下发的支持多播业务的用户路由选择策略URSP规则，URSP规则中包含有MBS规则。
在另一示例性实施例中，MBS规则接收模块410配置为在注册到移动通信网络中时，接收策略控制功能实体下发的MBS规则；或者在已注册到移动通信网络中、且移动至MBS服务区域内时，接收策略控制功能实体下发的MBS规则；或者在已注册到移动通信网络中、且移动至MBS服务区域内，且移动性管 理状态转换为连接态时，接收策略控制功能实体下发的MBS规则。
图7是另一示例性实施例示出的一种多播广播业务的通信装置的框图，该示例性的多播广播业务的通信装置500具体可以配置在图1所示5G移动通信网络中的AF上。
如图7所示，在一示例性实施例中，该多播广播业务的通信装置500可以包括业务请求消息生成模块510和业务请求消息发送模块520。其中，请求消息生成模块510配置为生成业务请求消息，业务请求消息中含有MBS服务区域的信息，业务请求消息用于触发策略控制功能实体生成针对用户终端的MBS规则和针对MBS会话管理的PCC规则，MBS规则用于指示用户终端在MBS服务区域内访问MBS业务，PCC规则用于控制SMF管理相应的MBS会话；业务请求消息发送模块520配置为将业务请求消息发送至策略控制功能实体。
在另一示例性实施例中，业务请求消息发送模块520配置为将业务请求消息直接发送至策略控制功能实体；或者向网络开放功能实体发送业务请求消息，网络开放功能实体将业务请求消息转发至策略控制功能实体。
在另一示例性实施例中，业务请求消息中还含有MBS有效服务时间的信息，MBS规则还用于指示用户终端在MBS服务区域内、且在MBS有效服务时间内访问MBS业务。
图8是另一示例性实施例示出的一种多播广播业务的通信装置的框图，该示例性的多播广播业务的通信装置600具体可以配置在图1所示5G移动通信网络中的PCF上。
如图8所示，在一示例性实施例中，该多播广播业务的通信装置600可以包括业务请求消息接收模块610、业务请求消息响应模块620和MBS规则发送模块630。其中，业务请求消息接收模块610配置为接收应用功能实体发送的业务请求消息，业务请求消息中含有MBS服务区域的信息；业务请求消息响应模块620配置为响应于业务请求消息，生成针对用户终端的MBS规则，MBS规则用于指示用户终端在MBS服务区域内访问MBS业务；MBS规则发送模块630配置为向用户终端发送MBS规则。
在另一示例性实施例中，该多播广播业务的通信装置600还包括PCC规则 生成模块和PCC规则发送模块。PCC规则生成模块配置为响应于业务请求消息，生成策略控制和计费PCC规则，PCC规则用于控制会话管理功能实体对MBS会话进行管理；PCC规则发送模块配置为向会话管理功能实体发送PCC规则。
需要说明的是，上述实施例所提供的装置与上述实施例所提供的方法属于同一构思，其中各个模块和单元执行操作的具体方式已经在方法实施例中进行了详细描述，此处不再赘述。
本申请的实施例还提供了一种电子设备，包括处理器和存储器，其中，存储器上存储有计算机可读指令，该计算机可读指令被处理器执行时实现如前所述的多播广播业务的通信方法。
图9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9示出的电子设备的计算机系统1600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9所示，计算机系统1600包括中央处理单元(Central Processing Unit，CPU)1601，其可以根据存储在只读存储器(Read-Only Memory，ROM)1602中的程序或者从存储部分1608加载到随机访问存储器(Random Access Memory，RAM)1603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 1603中，还存储有系统操作所需的各种程序和数据。CPU1601、ROM 1602以及RAM 1603通过总线1604彼此相连。输入/输出(Input/Output，I/O)接口1605也连接至总线1604。
以下部件连接至I/O接口1605：包括键盘、鼠标等的输入部分1606；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1607；包括硬盘等的存储部分1608；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1609。通信部分1609经由诸如因特网的网络执行通信处理。驱动器1610也根据需要连接至I/O接口1605。可拆卸介质1611，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1610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1608。
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1609从网络上被下载和安装，和/或从可拆卸介质1611被安装。在该计算机程序被中央处理单元(CPU)1601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。
本申请的另一方面还提供了一种计算机可读存储介质，其上存储有计算机程序，该计算机程序被处理器执行时实现如前所述的多播广播业务的通信方法。该计算机可读存储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。
本申请的另一方面还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个实施例中提供的多播广播业务的通信方法。
上述内容，仅为本申请的较佳示例性实施例，并非用于限制本申请的实施方案，本领域普通技术人员根据本申请的主要构思和精神，可以十分方便地进行相应的变通或修改，故本申请的保护范围应以权利要求书所要求的保护范围为准。

Claims (17)

  1. 一种多播广播业务的通信方法，所述方法由用户终端执行，所述方法包括：
    接收策略控制功能实体下发的多播广播业务MBS规则，所述MBS规则是所述策略控制功能实体基于应用功能实体发送的业务请求消息生成的，所述业务请求消息中含有MBS服务区域的信息；
    根据所述MBS规则和所述用户终端自身的位置信息，确定所述用户终端是否位于所述MBS服务区域内；
    若确定所述用户终端位于所述MBS服务区域内，则在所述MBS服务区域内访问MBS业务。
  2. 根据权利要求1所述的方法，所述在所述MBS服务区域内访问MBS业务，包括：
    根据所述MBS规则和所述用户终端需要访问的目标MBS业务，确定是否存在与所述目标MBS业务对应的MBS会话；
    若确定存在所述MBS会话，则加入到所述MBS会话中，以访问所述目标MBS业务。
  3. 根据权利要求2所述的方法，所述方法还包括：
    若确定不存在所述MBS会话，则发起针对所述目标MBS业务的MBS会话创建请求。
  4. 根据权利要求2所述的方法，所述加入到所述MBS会话中，包括：
    向用户面功能实体发送针对所述MBS会话的会话加入请求消息，以加入到所述MBS会话中，所述会话加入请求消息用于触发所述用户面功能实体向会话管理功能实体发送用于所述用户终端请求加入所述MBS会话的第一通知消息。
  5. 根据权利要求4所述的方法，所述会话加入请求消息还用于触发所述用户面功能实体向所述目标MBS业务对应的业务服务器发送所述用户终端接入所述目标MBS业务的第二通知消息。
  6. 根据权利要求1所述的方法，所述接收策略控制功能实体下发的MBS规则，包括：
    接收所述策略控制功能实体下发的支持多播业务的用户路由选择策略URSP规则，所述URSP规则中包含有所述MBS规则。
  7. 根据权利要求1所述的方法，所述接收策略控制功能实体下发的MBS规则，包括：
    在注册到移动通信网络中时，接收所述策略控制功能实体下发的所述MBS规则；或者
    在已注册到移动通信网络中、且移动至所述MBS服务区域内时，接收所述策略控制功能实体下发的所述MBS规则；或者
    在已注册到移动通信网络中、并移动至所述MBS服务区域内、且自身的移动性管理状态转换为连接态时，接收所述策略控制功能实体下发的所述MBS规则。
  8. 一种多播广播业务的通信方法，所述方法由应用功能实体执行，所述方法包括：
    生成业务请求消息，所述业务请求消息中含有多播广播业务MBS服务区域的信息，所述业务请求消息用于触发策略控制功能实体生成针对用户终端的MBS规则，所述MBS规则用于指示用户终端在所述MBS服务区域内访问MBS业务；
    将所述业务请求消息发送至所述策略控制功能实体。
  9. 根据权利要求8所述的方法，所述将所述业务请求消息发送至所述策略控制功能实体，包括：
    将所述业务请求消息直接发送至所述策略控制功能实体；或者
    向网络开放功能实体发送所述业务请求消息，以基于所述网络开放功能实体将所述业务请求消息转发至所述策略控制功能实体。
  10. 根据权利要求8所述的方法，所述业务请求消息中还含有MBS有效服务时间的信息，所述MBS规则还用于指示用户终端在所述MBS服务区域内、且在所述MBS有效服务时间内访问所述MBS业务。
  11. 一种多播广播业务的通信方法，所述方法由策略控制功能实体执行，所述方法包括：
    接收应用功能实体发送的业务请求消息，所述业务请求消息中含有多播广 播业务MBS服务区域的信息；
    响应于所述业务请求消息，生成针对用户终端的MBS规则，所述MBS规则用于指示所述用户终端在所述MBS服务区域内访问MBS业务；
    向所述用户终端发送所述MBS规则。
  12. 根据权利要求11所述的方法，所述方法还包括：
    响应于所述业务请求消息，生成策略控制和计费PCC规则，所述PCC规则用于控制会话管理功能实体对MBS会话进行管理；
    向所述会话管理功能实体发送所述PCC规则。
  13. 一种多播广播业务的通信装置，包括：
    多播广播业务MBS规则接收模块，用于接收策略控制功能实体下发的多播广播业务MBS规则，所述MBS规则是所述策略控制功能实体基于应用功能实体发送的业务请求消息生成的，所述业务请求消息中含有MBS服务区域的信息；
    服务区域确定模块，用于根据所述MBS规则和用户终端自身的位置信息，确定所述用户终端是否位于所述MBS服务区域内；
    MBS业务处理模块，配置为在所述服务区域确定模块确定所述用户终端位于所述MBS服务区域内时，在所述MBS服务区域内访问MBS业务。
  14. 一种多播广播业务的通信装置，包括：
    生成模块，用于生成业务请求消息，所述业务请求消息中含有多播广播业务MBS服务区域的信息，所述业务请求消息用于触发策略控制功能实体生成针对用户终端的MBS规则，所述MBS规则用于指示用户终端在所述MBS服务区域内访问MBS业务；
    发送模块，用于将所述业务请求消息发送至所述策略控制功能实体。
  15. 一种多播广播业务的通信装置，包括：
    接收模块，用于接收应用功能实体发送的业务请求消息，所述业务请求消息中含有多播广播业务MBS服务区域的信息；
    生成模块，用于响应于所述业务请求消息，生成针对用户终端的MBS规则，所述MBS规则用于指示所述用户终端在所述MBS服务区域内访问MBS业务；
    发送模块，用于向所述用户终端发送所述MBS规则。
  16. 一种电子设备，包括：
    存储器，存储有计算机可读指令；
    处理器，读取存储器存储的计算机可读指令，以执行权利要求1-12中的任一项所述的多播广播业务的通信方法。
  17. 一种计算机可读存储介质，其上存储有计算机程序，当所述计算机程序被计算机的处理器执行时，使计算机执行权利要求1-12中的任一项所述的多播广播业务的通信方法。
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