WO2023020276A1 - Procédé et appareil de transmission de données de services diffusion/multidiffusion, et dispositif et support de stockage - Google Patents

Procédé et appareil de transmission de données de services diffusion/multidiffusion, et dispositif et support de stockage Download PDF

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Publication number
WO2023020276A1
WO2023020276A1 PCT/CN2022/109761 CN2022109761W WO2023020276A1 WO 2023020276 A1 WO2023020276 A1 WO 2023020276A1 CN 2022109761 W CN2022109761 W CN 2022109761W WO 2023020276 A1 WO2023020276 A1 WO 2023020276A1
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WIPO (PCT)
Prior art keywords
mbs
data
relay
relay terminal
remote terminal
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PCT/CN2022/109761
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English (en)
Chinese (zh)
Inventor
邓强
段小嫣
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大唐移动通信设备有限公司
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Publication of WO2023020276A1 publication Critical patent/WO2023020276A1/fr

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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
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present application relates to the technical field of mobile communication, and in particular to a multicast broadcast service data transmission method, device, device and storage medium.
  • Proximity Services Proximity Services
  • Embodiments of the present application provide a multicast broadcast service data transmission method, device, device, and storage medium, which enable a remote terminal to obtain MBS data from a network device through a relay terminal.
  • the embodiment of the present application provides a multicast broadcast service MBS data transmission method, which is applied to a remote terminal, and the method includes:
  • the MBS monitoring request includes the MBS session identifier of the first MBS, and the MBS monitoring request is used to instruct the relay terminal to obtain the MBS data of the first MBS from the network device;
  • the direct connection communication is established between the above-mentioned remote terminal and the above-mentioned relay terminal.
  • the embodiment of the present application also provides a multicast broadcast service MBS data transmission method, the method comprising:
  • the MBS monitoring request includes the MBS session identifier of the first MBS
  • the direct connection communication is established between the above-mentioned remote terminal and the above-mentioned relay terminal.
  • the embodiment of the present application also provides a remote terminal, the remote terminal includes a memory, a processor, and a computer program stored in the memory and operable on the processor, when the processor executes the computer program, the The multicast broadcast service data transmission method provided in the first aspect.
  • the embodiment of the present application also provides a relay terminal.
  • the remote terminal includes a memory, a processor, and a computer program stored in the memory and operable on the processor.
  • the processor executes the computer program, it realizes
  • the second aspect provides a multicast broadcast service data transmission method.
  • the embodiment of the present application also provides a multicast broadcast service MBS data transmission device, the device includes:
  • the first sending unit is configured to send an MBS monitoring request to the relay terminal, the MBS monitoring request includes the MBS session identifier of the first MBS, and the MBS monitoring request is used to instruct the relay terminal to acquire the MBS of the first MBS from the network device data;
  • a first receiving unit configured to receive the above-mentioned MBS data sent by the above-mentioned relay terminal
  • the direct connection communication is established between the above-mentioned remote terminal and the above-mentioned relay terminal.
  • the embodiment of the present application also provides a multicast broadcast service MBS data transmission device, the device comprising:
  • the second receiving unit is configured to receive an MBS monitoring request sent by a remote terminal, where the MBS monitoring request includes the MBS session identifier of the first MBS;
  • a data acquisition unit configured to acquire the MBS data of the first MBS from the network device based on the MBS monitoring request
  • a second sending unit configured to send the above MBS data to the above remote terminal
  • the direct connection communication is established between the above-mentioned remote terminal and the above-mentioned relay terminal.
  • the embodiment of the present application also provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps in the above method are implemented .
  • Fig. 1 is a schematic flow chart of a multicast broadcast service data transmission method
  • Fig. 2 is another schematic flow diagram of a multicast broadcast service data transmission method
  • FIG. 3 is a schematic diagram of a sequence of sending MBS data to a remote UE in a multicast manner
  • FIG. 4 is a schematic diagram of a sequence of sending MBS data to a remote UE in a unicast manner
  • FIG. 5 is a schematic diagram of the sequence of PUD session establishment failure or MBS session joining failure
  • FIG. 6 is a schematic structural diagram of a multicast broadcast service data transmission device
  • FIG. 7 is another structural schematic diagram of a multicast broadcast service data transmission device
  • FIG. 8 is a schematic structural diagram of an electronic device.
  • Embodiments of the present application provide a multicast broadcast service data transmission method, device, device, and storage medium, so as to obtain multicast broadcast service data from a network.
  • the method and the device are conceived based on the same application. Since the principle of solving problems of the method and the device is similar, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.
  • the applicable system may be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet Wireless business (general packet radio service, GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, Long term evolution advanced (LTE-A) system, universal mobile telecommunications system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G new air interface (New Radio, NR) system, etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • GPRS general packet Wireless business
  • long term evolution long term evolution
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • TDD time division duplex
  • LTE-A Long term evolution advanced
  • UMTS universal mobile telecommunications
  • the remote terminal and relay terminal involved in the embodiment of the present application may be devices that provide voice and/or data connectivity to users, handheld devices with wireless connection functions, or other processing devices connected to wireless modems.
  • the name of the terminal equipment may be different.
  • the terminal equipment may be called User Equipment (User Equipment, UE).
  • the wireless terminal equipment can communicate with one or more core networks (Core Network, CN) via the radio access network (Radio Access Network, RAN), and the wireless terminal equipment can be a mobile terminal equipment, such as a mobile phone (or called a "cellular "telephones) and computers with mobile terminal equipment, such as portable, pocket, hand-held, computer built-in or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network.
  • Core Network Core Network
  • RAN Radio Access Network
  • Wireless terminal equipment can also be called system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point , remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), and user device (user device), which are not limited in this embodiment of the application.
  • the network device involved in this embodiment of the present application may be a base station, and the base station may include multiple cells that provide services for terminals.
  • the base station can also be called an access point, or it can be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names.
  • the network device can be used to interchange received over-the-air frames with Internet Protocol (IP) packets and act as a router between the wireless terminal device and the rest of the access network, which can include the Internet Protocol (IP) communication network.
  • IP Internet Protocol
  • Network devices may also coordinate attribute management for the air interface.
  • the network equipment involved in the embodiment of the present application may be a network equipment (Base Transceiver Station, BTS) in the GSM system or CDMA, it may also be a network equipment (NodeB) in WCDMA, and it may also be an evolved network in the LTE system Equipment (evolutional Node B, eNB or e-NodeB), 5G base station (gNB) in the 5G network architecture (next generation system), can also be a home evolved base station (Home evolved Node B, HeNB), relay node (relay node ), a home base station (femto), a pico base station (pico), etc., are not limited in this embodiment of the present application.
  • a network device may include a centralized unit (centralized unit, CU) node and a distributed unit (distributed unit, DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.
  • MIMO transmission can be single user MIMO (Single User MIMO, SU-MIMO) or multi-user MIMO (Multiple User MIMO, MU-MIMO).
  • MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or diversity transmission, precoding transmission, or beamforming transmission, etc.
  • FIG. 1 is a schematic flowchart of a method for transmitting multicast broadcast service data, which can be executed by a remote terminal.
  • the multicast broadcast service data transmission method specifically includes the following steps when executed by a remote terminal:
  • Step S11 sending an MBS monitoring request to the relay terminal, where the MBS monitoring request is used to instruct the relay terminal to acquire MBS data of the first MBS from the network device.
  • the remote terminal When the remote terminal is outside the coverage of the network, or the signal quality of the communication interface with the network device is poor, so that it cannot be directly connected to the network device, it can be connected to the network device through the relay terminal.
  • the remote terminal When the remote terminal establishes direct communication with the relay terminal, the remote terminal may send an MBS monitoring request for the first MBS to the relay terminal, so as to instruct the relay terminal to acquire MBS data of the first MBS from the network device.
  • the remote terminal sends an MBS monitoring request to the relay terminal through the PC5 interface (direct communication interface).
  • the interception request includes the MBS session identifier of the first MBS.
  • the remote terminal may obtain the multicast session information of the first MBS from the core network device based on a service announcement (Service Announcement), and then obtain the MBS session identifier of the first MBS from the multicast session information.
  • Service Announcement a service announcement
  • the above monitoring request also includes one or more of the following:
  • the first data network name (Data Network Name, DNN) of the protocol data unit (Protocol Data Unit, PDU) session associated with the first MBS;
  • the first single network slice selection assistance information (Single Network Slice Selection Assistance Information, S-NSSAI) of the PDU session associated with the first MBS;
  • the first relay service code (Relay Service Code) associated with the first MBS.
  • the monitoring request includes the MBS session identifier of the first MBS, the first DNN and the first S-NSSAI of the PDU session associated with the first MBS.
  • the MBS monitoring request includes the first relay service code associated with the first MBS
  • the first relay service code associated with the first MBS is obtained in the following manner:
  • the first relay service code associated with the first MBS is obtained.
  • the MBS monitoring request includes the first DNN and the first S-NSSAI of the PDU session associated with the first MBS
  • the first DNN and the first S-NSSAI of the PDU session associated with the first MBS pass the following way to get:
  • the remote terminal obtains the multicast session information of the first MBS from the core network device based on the service announcement, and then obtains the first DNN and the first S-NSSAI of the PDU session associated with the first MBS from the multicast session information .
  • the remote terminal may also obtain the first service relay code from the core network device, and the first mapping relationship between the relay service code and the DNN and S-NSSAI of the PDU session, and then based on the first mapping relationship and the first The serving relay code determines the first DNN and the first S-NSSAI of the PDU session associated with the first MBS.
  • the relay terminal can obtain the first mapping relationship between the combination of DNN and S-NSSAI and the relay service code from the policy control function (Packet Control Function, PCF) network element.
  • Policy control Function Packet Control Function, PCF
  • Step S12 receiving the MBS data sent by the relay terminal.
  • the MBS data sent by the relay terminal may be received.
  • the remote terminal receives the MBS data sent by the relay terminal through the direct communication interface.
  • the above MBS data is sent by the relay terminal in a multicast or unicast manner.
  • the above receiving MBS data sent by the relay terminal includes:
  • the MBS data sent by the relay terminal in a multicast manner is acquired from the layer 2 corresponding to the first layer 2 group identifier.
  • the remote terminal may receive the MBS data sent by the relay terminal in a multicast manner through the direct communication interface based on the first layer 2 group identifier.
  • the above-mentioned receiving MBS data sent by the relay terminal includes:
  • the MBS data sent by the relay terminal in a unicast manner is acquired through the direct communication interface.
  • the remote terminal may receive the MBS data sent by the relay terminal in unicast mode through the direct communication interface.
  • the relay terminal may send a PDU session establishment request including the first DNN and the first S-NSSAI to the network device , to establish a PDU session. If the PDU session is established successfully, a multicast session join request including the MBS session identifier of the first MBS is sent to the network device, so as to join the MBS session of the first MBS. If it is determined to join the MBS session corresponding to the first MBS, the relay terminal may acquire the MBS data of the first MBS from the network device. Based on this, the above method also includes:
  • the MBS data acquisition failure information sent by the relay terminal is received, and the above MBS data acquisition failure information may be specifically used to indicate the failure to establish the PDU session, and/or the failure to join the MBS session of the first MBS.
  • the remote terminal may stop acquiring the MBS data of the first MBS from the relay terminal, or re-send a new MBS monitoring request to the relay terminal to acquire MBS data again.
  • FIG. 2 is a schematic flow chart of another method for transmitting multicast broadcast service data, which can be executed by a relay terminal. As shown in Figure 2, when the multicast broadcast service data transmission method is executed by the relay terminal, it specifically includes the following steps:
  • Step S21 receiving an MBS listening request sent by a remote terminal.
  • the relay terminal may receive the MBS monitoring request sent by the remote terminal through the direct communication interface.
  • the interception request includes the MBS session identifier of the first MBS.
  • the above monitoring request further includes at least one of the following:
  • a first relay service code associated with the first MBS is A first relay service code associated with the first MBS.
  • Step S22 acquiring MBS data of the first MBS from the network device based on the MBS monitoring request.
  • acquiring the MBS data of the first MBS from the network device based on the MBS listening request includes:
  • a PDU session establishment request including the first DNN and the first S-NSSAI Sending a PDU session establishment request including the first DNN and the first S-NSSAI to the network device, so as to establish the PDU session. If the PDU session is successfully established, a multicast session join request including the MBS session identifier of the first MBS is sent to the network device, so as to join the MBS session corresponding to the first MBS. If it is determined to join the MBS session corresponding to the first MBS, the MBS data of the first MBS is acquired from the network device.
  • the MBS monitoring request may include the MBS session identifier of the first MBS, the first DNN and the first S-NSSAI of the PDU session associated with the first MBS.
  • the MBS monitoring request may include the MBS session identifier of the first MBS and the first service relay code associated with the first MBS. Then the first DNN and the first S-NSSAI of the PDU session associated with the first MBS are obtained in the following manner:
  • the first relay service code included in the MBS monitoring request is obtained The first DNN and the first S-NSSAI of the corresponding PDU session.
  • MBS data acquisition failure information may be sent to the remote terminal, so that the remote terminal terminates obtaining the first MBS data from the relay terminal.
  • MBS data of one MBS or resend a new MBS monitoring request to the relay terminal to reacquire MBS data.
  • the above-mentioned MBS data acquisition failure information may include a cause value of failure to establish a PDU session and/or a cause value of failure to join an MBS session, so as to indicate MBS data acquisition failure based on the cause value.
  • the relay terminal when the relay terminal acquires the MBS data of the first MBS, it can be acquired in one or more of the following ways:
  • PtM Point to Multicast
  • the relay terminal obtains the MBS data from the network device through the cellular communication interface (Uu) interface.
  • the relay terminal obtains the MBS data from the network device through the PDU session. If the network device supports MBS data transmission, the relay terminal obtains the MBS data from the network device through PtP or PtM.
  • NG RAN next generation Radio Access Network
  • Step S23 sending the MBS data to the remote terminal.
  • the relay terminal may determine a transmission mode for providing the MBS data to the remote terminal, and then send the MBS data to the remote terminal according to the determined transmission mode.
  • the above-mentioned transmission mode includes a multicast mode or a unicast mode.
  • the relay terminal can send the MBS data to the remote terminal based on the direct communication interface.
  • the relay terminal may determine to provide MBS data to the remote terminal in a multicast manner, and the relay terminal may send an MBS monitoring response message to the remote terminal, the MBS monitoring response message includes the first layer 2 group identifier, the The first layer 2 group identifier is used to instruct the remote device to obtain the MBS data from the layer 2 corresponding to the first layer 2 group identifier, and then send the MBS data to the remote terminal based on the first layer 2 group identifier.
  • the relay terminal may send the MBS data to the remote terminal in a unicast manner, and send indication information to the remote terminal, where the indication information is used to instruct the MBS data to be sent in a unicast manner. Furthermore, the relay terminal can send the MBS data to the remote terminal in a unicast manner based on the direct communication interface.
  • the remote terminal when sending MBS data to the remote terminal based on any of the above methods, in order to reduce the network delay between the remote terminal and the relay terminal and avoid problems such as congestion, it can be determined that the The first quality of service parameter corresponding to the direct communication interface between them, and then based on the first quality of service parameter and the determined transmission mode, send the MBS data to the remote terminal.
  • the relay terminal can initiate a layer 2 connection modification process (Layer-2link) to establish a quality of service flow (QoS flow) corresponding to the first quality of service parameter, and based on the quality of service flow, send the MBS data.
  • Layer-2link layer 2 connection modification process
  • QoS flow quality of service flow
  • the relay terminal may determine the first quality of service parameter corresponding to the direct communication interface between the relay terminal and the remote terminal based on the manner in which the MBS data is obtained.
  • the relay terminal obtains the MBS data based on the PDU session, determine the second quality of service parameter corresponding to the cellular communication interface between the relay terminal and the network device, and the second quality of service parameter corresponding to the cellular communication interface and the direct communication interface For the second mapping relationship of the quality of service parameter, based on the second quality of service parameter and the second mapping relationship, determine the first quality of service parameter corresponding to the direct connection communication interface between the relay terminal and the remote terminal;
  • the relay terminal obtains the MBS data based on unicast or multicast, determine the first radio bearer corresponding to the network device sending the MBS data, and the third mapping relationship between the radio bearer and the QoS parameter corresponding to the direct communication interface, based on The first radio bearer and the third mapping relationship determine the first quality of service parameter corresponding to the direct communication interface between the relay terminal and the remote terminal.
  • different MBS data correspond to different quality of service parameters when they are transmitted through the direct connection communication interface. There is no need to guarantee the lowest bit rate, and different quality of service parameters need to be adopted under different timeliness requirements.
  • MBS data when different MBS data are sent through the cellular communication interface, different MBS data will also be sent based on different radio bearers. For example, for MBS data that needs to guarantee the lowest bit rate, it is necessary to adopt the guaranteed bit rate (Guaranteed Bit Rate, GBR) class Bearer transmission, otherwise use Non-GBR type bearer transmission. Based on this, after the relay terminal acquires the MBS data through the first radio bearer, based on the third mapping relationship between the pre-configured radio bearer and the QoS parameter corresponding to the direct communication interface and the first radio bearer, it can directly determine the acquired The corresponding first quality of service parameter when the received MBS data is transmitted through the direct communication interface.
  • GBR Guarantee Bit Rate
  • FIG. 3 is a schematic diagram of a sequence of sending MBS data to a remote UE in a multicast manner.
  • the remote UE establishes a PC5 connection with the relay UE before obtaining MBS data, and the remote UE obtains the MBS multicast session information from the core network device through the Service Announcement process defined in the existing protocol standard.
  • the above-mentioned MBS multicast session information includes the DNN and S-NSSAI of the PDU session associated with the MBS session, and the MBS session identifier (MBS Session ID).
  • the remote UE sends an MBS monitoring request to the relay UE, requesting the relay UE to obtain MBS data from the network device.
  • the MBS monitoring request includes MBS Session ID, DNN and S-NSSAI.
  • the MBS monitoring request includes an MBS Session ID and a first relay service code (Relay Service Code).
  • the Relay Service Code is determined by the remote UE according to the mapping relationship between [DNN, S-NSSAI] obtained from the PCF and the Relay Service Code.
  • the relay UE initiates the PDU session establishment process, and the relay UE provides the DNN and S-NSSAI to the network device. If the MBS monitoring request includes the Relay Service Code, the relay UE determines the DNN and S-NSSAI according to the mapping relationship between [DNN, S-NSSAI] and the Relay Service Code provided by the PCF.
  • the process of MBS session joining and MBS session establishment is initiated, and the MBS Session ID is provided to the network device to obtain MBS data after joining the MBS session.
  • the relay UE decides to forward the MBS data to the remote UE in the multicast mode on the PC5 interface, and the relay UE provides the Layer-2Group ID used to receive the MBS data to the remote UE.
  • the MBS monitoring response information includes the Layer-2Group ID.
  • the MBS monitoring response information may also include an MBS session identifier.
  • the relay UE After the relay UE receives the MBS data from the network device, the relay UE determines the QoS parameters corresponding to the PC5 interface. If the relay UE receives MBS data from the network device through the PDU session, the relay UE determines the QoS parameters corresponding to the PC5 interface according to the mapping relationship between the Uu QoS parameters provided by the PCF and the PC5 QoS parameters. If the relay UE receives the MBS data from the network device through PtP or PtM, the relay UE determines the QoS parameter corresponding to the PC5 according to the relationship between the radio bearer provided by the PCF and the QoS parameter corresponding to the PC5 interface.
  • the relay UE After receiving the multicast data from the network, the relay UE forwards the MBS data to the remote UE through the multicast mode on the PC5 interface and based on the QoS flow corresponding to the QoS parameters.
  • the remote UE can obtain the MBS data sent by the relay UE based on the received Layer-2Group ID.
  • FIG. 4 is a schematic diagram of a sequence of sending MBS data to a remote UE in a unicast manner.
  • the remote UE establishes a PC5 connection with the relay UE before obtaining MBS data, and the remote UE obtains the MBS multicast session information from the core network device through the Service Announcement process defined in the existing protocol standard.
  • the above-mentioned MBS multicast session information includes the DNN and S-NSSAI of the PDU session associated with the MBS session, and the MBS session identifier (MBS Session ID).
  • the remote UE sends an MBS monitoring request to the relay UE, requesting the relay UE to obtain MBS data from the network device.
  • the MBS monitoring request includes MBS Session ID, DNN and S-NSSAI.
  • the MBS monitoring request includes an MBS Session ID and a first relay service code (Relay Service Code).
  • the Relay Service Code is determined by the remote UE according to the mapping relationship between [DNN, S-NSSAI] obtained from the PCF and the Relay Service Code.
  • the relay UE initiates the PDU session establishment process, and the relay UE provides the DNN and S-NSSAI to the network device. If the MBS monitoring request includes the Relay Service Code, the relay UE determines the DNN and S-NSSAI according to the mapping relationship between [DNN, S-NSSAI] and the Relay Service Code provided by the PCF.
  • the process of MBS session joining and MBS session establishment is initiated, and the MBS Session ID is provided to the network device to obtain MBS data after joining the MBS session.
  • the MBS monitoring response information may also include an MBS session identifier.
  • the relay UE After the relay UE receives the MBS data from the network device, the relay UE determines the QoS parameters corresponding to the PC5 interface. If the relay UE receives MBS data from the network device through the PDU session, the relay UE determines the QoS parameters corresponding to the PC5 interface according to the mapping relationship between the Uu QoS parameters provided by the PCF and the PC5 QoS parameters. If the relay UE receives the MBS data from the network device through PtP or PtM, the relay UE determines the QoS parameter corresponding to the PC5 according to the relationship between the radio bearer provided by the PCF and the QoS parameter corresponding to the PC5 interface.
  • the relay UE After the relay UE receives the multicast data from the network, it initiates the Layer-2 link modification process to establish a new PC5QoS flow, and forwards the MBS data to the remote UE based on the new PC5QoS flow through unicast on the PC5 interface.
  • FIG. 5 is a schematic diagram of a sequence of PUD session establishment failure or MBS session joining failure.
  • the remote UE establishes a PC5 connection with the relay UE before obtaining MBS data, and the remote UE obtains the MBS multicast session information from the core network device through the Service Announcement process defined in the existing protocol standard.
  • the above-mentioned MBS multicast session information includes the DNN and S-NSSAI of the PDU session associated with the MBS session, and the MBS session identifier (MBS Session ID).
  • the remote UE sends an MBS monitoring request to the relay UE, requesting the relay UE to obtain MBS data from the network equipment.
  • the MBS monitoring request includes MBS Session ID, DNN and S-NSSAI.
  • the MBS monitoring request includes an MBS Session ID and a first relay service code (Relay Service Code).
  • the Relay Service Code is determined by the remote UE according to the mapping relationship between [DNN, S-NSSAI] provided by the PCF and the Relay Service Code.
  • the relay UE initiates the PDU session establishment process, and the relay UE provides the DNN and S-NSSAI to the network device. If the MBS monitoring request includes the Relay Service Code, the relay UE determines the DNN and S-NSSAI according to the mapping relationship between [DNN, S-NSSAI] and the Relay Service Code provided by the PCF. After the PDU session is successfully established, the relay UE initiates the MBS session join and MBS session establishment process, and provides the MBS Session ID to the network device to obtain MBS data after joining the MBS session.
  • the relay UE fails to establish a PDU session, such as the relay UE cannot establish a PDU session supporting DNN and S-NSSAI, and/or, the relay UE fails to join the MBS session, such as a session management function (Session Management Function, SMF) network element
  • SMF Session Management Function
  • the relay UE sends MBS data acquisition failure information to the remote UE to indicate the failure to establish the PDU session and/or indicate the failure to join the MBS session, so that the remote UE receives
  • the acquisition of MBS data may be stopped or the MBS monitoring request may be re-initiated.
  • the MBS data acquisition failure information may also include an MBS session identifier.
  • the MBS data acquisition failure information may also include a cause value of failure to establish a PDU session to indicate a failure to establish a PDU session, and may also include a cause value of a failure to join an MBS session to indicate a failure to join an MBS session.
  • the remote terminal can instruct the relay terminal to obtain MBS data from the network device by sending an MBS monitoring request to the relay terminal, and the relay terminal can send the acquisition request to the remote terminal through unicast or multicast.
  • the received MBS data so that the remote terminal obtains the MBS data through the relay terminal, which has high applicability.
  • FIG. 6 is a schematic structural diagram of a multicast broadcast service data transmission device.
  • the multicast broadcast service data transmission device includes:
  • the first sending unit 61 is configured to send an MBS monitoring request to the relay terminal, the above-mentioned MBS monitoring request includes the MBS session identifier of the first broadcast multicast service MBS, and the above-mentioned MBS monitoring request is used to instruct the above-mentioned relay terminal to obtain the above-mentioned MBS data of the first MBS;
  • the first receiving unit 62 is configured to receive the above-mentioned MBS data sent by the above-mentioned relay terminal;
  • the direct connection communication is established between the above-mentioned remote terminal and the above-mentioned relay terminal.
  • the above MBS monitoring request also includes one or more of the following:
  • the first relay service code associated with the above-mentioned first MBS is associated with the above-mentioned first MBS.
  • the above-mentioned first sending unit 61 is configured to:
  • the first relay service code associated with the first MBS is obtained.
  • the above-mentioned first sending unit 61 is configured to:
  • the first DNN and the first S-NSSAI of the PDU session associated with the first MBS are obtained.
  • the above-mentioned first receiving unit 62 is configured to:
  • the MBS data sent by the relay terminal in a multicast manner is acquired from the layer 2 corresponding to the first layer 2 group identifier.
  • the above-mentioned first receiving unit 62 is configured to:
  • the above MBS data sent by the above relay terminal in unicast mode is obtained through the direct connection communication interface.
  • the above-mentioned first receiving unit 62 is also used for:
  • the MBS data acquisition failure information sent by the relay terminal is received.
  • the multicast and broadcast service data transmission device can implement various processes implemented in the method embodiment in FIG. 1 , and details are not repeated here to avoid repetition.
  • FIG. 7 is another structural schematic diagram of a multicast broadcast service data transmission device.
  • the multicast broadcast service data transmission device includes:
  • the second receiving unit 71 is configured to receive an MBS monitoring request sent by a remote terminal, where the MBS monitoring request includes the MBS session identifier of the first MBS;
  • a data acquisition unit 72 configured to acquire the MBS data of the first MBS from the network device based on the MBS monitoring request;
  • the second sending unit 73 is configured to send the above-mentioned MBS data to the above-mentioned remote terminal;
  • the direct connection communication is established between the above-mentioned remote terminal and the above-mentioned relay terminal.
  • the above-mentioned data acquisition unit 72 is configured to:
  • the above-mentioned PDU session establishment request includes the first data network name DNN of the PDU session associated with the above-mentioned first MBS and the first single network slice selection auxiliary information S of the above-mentioned PDU session -NSSAI;
  • the PDU session is established successfully, then send a multicast session join request to the above-mentioned network equipment, and the above-mentioned multicast session join request includes the MBS session identifier of the above-mentioned first MBS;
  • the MBS data of the first MBS is acquired from the network device.
  • the above-mentioned second sending unit 73 is also used for:
  • the first DNN of the PDU session associated with the above-mentioned first MBS and the first S-NSSAI of the above-mentioned PDU session are carried in the above-mentioned MBS monitoring request;
  • the first DNN and the first S-NSSAI of the PDU session associated with the first MBS are obtained in the following manner:
  • the corresponding first relay service code included in the above-mentioned MBS monitoring request is obtained The first DNN and the first S-NSSAI of the PDU session.
  • the above-mentioned second sending unit 73 is configured to:
  • the above-mentioned transmission mode includes a multicast mode or a unicast mode
  • the above-mentioned second sending unit 73 is configured to:
  • the above-mentioned second sending unit 73 is configured to:
  • the above-mentioned relay terminal obtains the above-mentioned MBS data based on the PDU session, then determine the second quality of service parameter corresponding to the cellular communication interface between the relay terminal and the above-mentioned network equipment, and the service quality parameter corresponding to the cellular communication interface and the direct communication interface For the second mapping relationship of the corresponding quality of service parameter, based on the second quality of service parameter and the second mapping relationship, determine the first quality of service parameter corresponding to the direct communication interface between the relay terminal and the remote terminal;
  • the above-mentioned relay terminal acquires the above-mentioned MBS data based on unicast or multicast, determine the first radio bearer corresponding to the above-mentioned MBS data sent by the above-mentioned network equipment, and the third radio bearer corresponding to the quality of service parameter corresponding to the radio bearer and the direct communication interface.
  • the mapping relationship is based on the first radio bearer and the third mapping relationship, determining the first quality of service parameter corresponding to the direct communication interface between the relay terminal and the remote terminal.
  • the above-mentioned second sending unit 73 is configured to:
  • the above-mentioned second sending unit 73 is configured to:
  • the multicast and broadcast service data transmission device can implement various processes implemented in the method embodiment in FIG. 2 , and details are not repeated here to avoid repetition.
  • each functional module in each embodiment of the present application may be integrated into one processing module, each module may exist separately physically, or two or more modules may be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules.
  • the above-mentioned integrated modules are realized in the form of software function modules and sold or used as independent products, they can be stored in a processor-readable storage medium.
  • the technical solution of the present application or all or part of the technical solution may be embodied in the form of a software product, the computer software product is stored in a storage medium, and includes several instructions to make a computer device (which can It is a personal computer, a server, or a network device, etc.) or a processor (processor) that executes all or part of the steps of the above-mentioned methods in various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .
  • FIG. 8 is a schematic structural diagram of an electronic device.
  • the electronic device shown in FIG. 8 includes a memory 820, a transceiver 840, and a processor 810;
  • memory 820 for storing computer programs
  • Transceiver 840 for receiving and sending data under the control of processor 810;
  • the processor 810 is configured to read the computer program in the memory 820. When the electronic device is used as a remote terminal, the processor 810 is configured to perform the following operations:
  • the MBS monitoring request includes the MBS session identifier of the first MBS, and the MBS monitoring request is used to instruct the relay terminal to obtain the MBS data of the first MBS from the network device;
  • the direct connection communication is established between the above-mentioned remote terminal and the above-mentioned relay terminal.
  • the above MBS monitoring request also includes one or more of the following:
  • the first relay service code associated with the above-mentioned first MBS is associated with the above-mentioned first MBS.
  • processor 810 is configured to:
  • the first relay service code associated with the first MBS is obtained.
  • processor 810 is configured to:
  • the first DNN and the first S-NSSAI of the PDU session associated with the first MBS are obtained.
  • processor 810 is configured to:
  • the MBS data sent by the relay terminal in a multicast manner is acquired from the layer 2 corresponding to the first layer 2 group identifier.
  • processor 810 is configured to:
  • the above MBS data sent by the above relay terminal in unicast mode is obtained through the direct connection communication interface.
  • processor 810 is configured to:
  • the MBS data acquisition failure information sent by the relay terminal is received.
  • the processor 810 is configured to perform the following operations:
  • the MBS monitoring request includes the MBS session identifier of the first MBS
  • the direct connection communication is established between the above-mentioned remote terminal and the above-mentioned relay terminal.
  • processor 810 is configured to:
  • the above-mentioned PDU session establishment request includes the first data network name DNN of the PDU session associated with the above-mentioned first MBS and the first single network slice selection auxiliary information S of the above-mentioned PDU session -NSSAI;
  • the PDU session is established successfully, then send a multicast session join request to the above-mentioned network equipment, and the above-mentioned multicast session join request includes the MBS session identifier of the above-mentioned first MBS;
  • the MBS data of the first MBS is acquired from the network device.
  • processor 810 is also used for:
  • the first DNN of the PDU session associated with the above-mentioned first MBS and the first S-NSSAI of the above-mentioned PDU session are carried in the above-mentioned MBS monitoring request;
  • the first DNN and the first S-NSSAI of the PDU session associated with the first MBS are obtained in the following manner:
  • the corresponding first relay service code included in the above-mentioned MBS monitoring request is obtained The first DNN and the first S-NSSAI of the PDU session.
  • processor 810 is configured to:
  • the above-mentioned transmission mode includes a multicast mode or a unicast mode
  • processor 810 is configured to:
  • processor 810 is configured to:
  • the above-mentioned relay terminal obtains the above-mentioned MBS data based on the PDU session, then determine the second quality of service parameter corresponding to the cellular communication interface between the relay terminal and the above-mentioned network equipment, and the service quality parameter corresponding to the cellular communication interface and the direct communication interface For the second mapping relationship of the corresponding quality of service parameter, based on the second quality of service parameter and the second mapping relationship, determine the first quality of service parameter corresponding to the direct communication interface between the relay terminal and the remote terminal;
  • the above-mentioned relay terminal acquires the above-mentioned MBS data based on unicast or multicast, determine the first radio bearer corresponding to the above-mentioned MBS data sent by the above-mentioned network equipment, and the third radio bearer corresponding to the quality of service parameter corresponding to the radio bearer and the direct communication interface.
  • the mapping relationship is based on the first radio bearer and the third mapping relationship, determining the first quality of service parameter corresponding to the direct communication interface between the relay terminal and the remote terminal.
  • processor 810 is configured to:
  • processor 810 is configured to:
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors 810 represented by the processor 810 and various circuits of the memory 820 represented by the memory 820 are linked together.
  • the bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein.
  • Bus interface 830 provides the interface.
  • Transceiver 840 may be a plurality of elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical cables, and other transmission media.
  • the processor 810 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 810 when performing operations.
  • the user interface 850 may also be an interface capable of connecting externally and internally to required devices, and the connected devices include but not limited to keypads, monitors, speakers, microphones, joysticks, and the like.
  • the processor 810 can be a central processing device (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device , CPLD), the processor 810 may also adopt a multi-core architecture.
  • CPU central processing device
  • ASIC Application Specific Integrated Circuit
  • FPGA field programmable gate array
  • CPLD Complex Programmable Logic Device
  • the processor 810 is configured to execute any one of the above-mentioned methods according to the embodiments of the present application according to the obtained executable instructions by calling the computer program stored in the memory 820 .
  • the processor 810 and the memory 820 may also be arranged physically separately.
  • An embodiment of the present application also provides a non-transitory computer-readable storage medium, the above-mentioned non-transitory computer-readable storage medium stores a computer program, and when the above-mentioned computer program is run by the above-mentioned processor, the above-mentioned processor executes multicast A broadcasting service data transmission method.
  • the aforementioned non-transitory computer-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor memory (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drive (SSD)), etc.
  • magnetic storage such as floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical storage Such as CD, DVD, BD, HVD, etc.
  • semiconductor memory such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drive (SSD)
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) having computer-usable program code embodied therein.
  • processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, such that the instructions stored in the processor-readable memory produce a manufacturing product, the instruction device realizes the functions specified in one or more procedures of the flow chart and/or one or more blocks of the block diagram.
  • processor-executable instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented
  • the executed instructions provide steps for implementing the functions specified in the procedure or procedures of the flowchart and/or the block or blocks of the block diagrams.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande se rapporte au domaine technique des communications mobiles. Sont divulgués un procédé et un appareil de transmission de données de service de diffusion/multidiffusion (MBS), ainsi qu'un dispositif et un support de stockage. Le procédé consiste à : envoyer une demande de surveillance de MBS à un terminal relais, la demande de surveillance MBS comprenant un identifiant de session MBS d'un premier MBS, et la demande de surveillance MBS servant à demander au terminal relais d'acquérir les données MBS du premier MBS à partir d'un dispositif réseau ; et recevoir des données MBS qui sont envoyées par le terminal relais, une communication de liaison latérale étant établie entre un terminal distant et le terminal relais.
PCT/CN2022/109761 2021-08-16 2022-08-02 Procédé et appareil de transmission de données de services diffusion/multidiffusion, et dispositif et support de stockage WO2023020276A1 (fr)

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