WO2021051320A1 - Procédé et appareil de transmission de données de service, dispositif de réseau et dispositif terminal - Google Patents

Procédé et appareil de transmission de données de service, dispositif de réseau et dispositif terminal Download PDF

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Publication number
WO2021051320A1
WO2021051320A1 PCT/CN2019/106509 CN2019106509W WO2021051320A1 WO 2021051320 A1 WO2021051320 A1 WO 2021051320A1 CN 2019106509 W CN2019106509 W CN 2019106509W WO 2021051320 A1 WO2021051320 A1 WO 2021051320A1
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WIPO (PCT)
Prior art keywords
cell
mbms service
terminal device
service
indication information
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PCT/CN2019/106509
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English (en)
Chinese (zh)
Inventor
王淑坤
杨宁
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Oppo广东移动通信有限公司
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Priority to PCT/CN2019/106509 priority Critical patent/WO2021051320A1/fr
Priority to CN201980095151.0A priority patent/CN113661722B/zh
Publication of WO2021051320A1 publication Critical patent/WO2021051320A1/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

Definitions

  • the embodiments of the present application relate to the field of mobile communication technology, and in particular to a method and device for transmitting service data, network equipment, and terminal equipment.
  • Multimedia Broadcast Multicast Service is a technology that transmits data from one data source to multiple users by sharing network resources. This technology can effectively use network resources while providing multimedia services to achieve better performance. Broadcast and multicast of high-rate (such as 256kbps) multimedia services.
  • NR New Radio
  • the target cell may not support the transmission of the MBMS service, and the terminal device has a demand for receiving the MBMS service, which will cause the interruption of the MBMS service.
  • the embodiments of the present application provide a method and device for transmitting service data, network equipment, and terminal equipment.
  • the first cell receives first indication information, where the first indication information is used to indicate that the terminal device needs to receive the MBMS service;
  • the first cell determines that the second cell supports sending the MBMS service, and provides the MBMS service for the terminal device through the second cell.
  • the terminal device sends first indication information to the first cell, where the first indication information is used to indicate that the terminal device needs to receive the MBMS service;
  • the terminal device receives the MBMS service provided by a second cell, where the second cell is a cell determined by the first cell to support sending the MBMS service.
  • a receiving unit configured to receive first indication information, where the first indication information is used to indicate that the terminal device needs to receive an MBMS service;
  • the determining unit is configured to determine that the second cell supports sending the MBMS service, and provide the MBMS service for the terminal device through the second cell.
  • a sending unit configured to send first indication information to the first cell, where the first indication information is used to indicate that the terminal device needs to receive the MBMS service;
  • the receiving unit is configured to receive the MBMS service provided by the second cell, where the second cell is a cell determined by the first cell to support sending the MBMS service.
  • the network device provided by the embodiment of the present application includes a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the above-mentioned business data transmission method.
  • the terminal device provided in the embodiment of the present application includes a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the foregoing business data transmission method.
  • the chip provided in the embodiment of the present application is used to implement the foregoing service data transmission method.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the above-mentioned service data transmission method.
  • the computer-readable storage medium provided by the embodiment of the present application is used to store a computer program, and the computer program enables a computer to execute the above-mentioned service data transmission method.
  • the computer program product provided by the embodiment of the present application includes computer program instructions that cause a computer to execute the above-mentioned service data transmission method.
  • the computer program provided in the embodiment of the present application when it runs on a computer, causes the computer to execute the above-mentioned service data transmission method.
  • the NR system supports broadcast and multicast of MBMS services.
  • a dual-connection-based mechanism is proposed to provide MBMS services to terminal devices through secondary cells;
  • a mechanism for forwarding between the network sides is proposed, that is, cells that do not support MBMS service transmission use dedicated messages. Make the MBMS service from the cell that supports MBMS service transmission be forwarded to the terminal device.
  • the terminal device can still be able to change to a cell without MBMS service transmission. To achieve continuous reception of MBMS services.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a first SIB related configuration provided by an embodiment of the present application
  • Fig. 3 is a schematic diagram of a PTM configuration transmission mechanism provided by an embodiment of the present application.
  • Fig. 4 is a PTM channel and its mapping diagram provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a service data transmission method provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram 1 of the structural composition of a service data transmission device provided by an embodiment of the present application.
  • FIG. 7 is a second schematic diagram of the structural composition of a service data transmission device provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a chip of an embodiment of the present application.
  • FIG. 10 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • 5G communication system 5G communication system or future communication system.
  • the communication system 100 applied in the embodiment of this application is shown in FIG. 1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or called a communication terminal or terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminals located in the coverage area.
  • the network device 110 may be an evolved base station (Evolutional Node B, eNB, or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or
  • the network equipment can be a mobile switching center, a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network side device in a 5G network, or a network device in a future communication system, etc.
  • the communication system 100 also includes at least one terminal 120 located within the coverage area of the network device 110.
  • the "terminal” used here includes, but is not limited to, connection via a wired line, such as via a public switched telephone network (PSTN), digital subscriber line (Digital Subscriber Line, DSL), digital cable, and direct cable connection; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM-FM Broadcast transmitter; and/or another terminal's device configured to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • PSTN public switched telephone network
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • a terminal set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio telephone transceivers Electronic device.
  • PCS Personal Communications System
  • GPS Global Positioning System
  • Terminal can refer to access terminal, user equipment (UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user Device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in 5G networks, or terminals in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • direct terminal connection (Device to Device, D2D) communication may be performed between the terminals 120.
  • the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.
  • NR New Radio
  • FIG. 1 exemplarily shows one network device and two terminals.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminals. This embodiment of the present application There is no restriction on this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices.
  • the communication device may include a network device 110 and a terminal 120 with communication functions, and the network device 110 and the terminal 120 may be the specific devices described above, which will not be repeated here; communication
  • the device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • 5G Enhanced Mobile Broadband
  • URLLC Ultra-Reliable Low-Latency Communications
  • mMTC Massive Machine-Type Communications
  • eMBB is still targeting users to obtain multimedia content, services and data, and its demand is growing very rapidly.
  • eMBB may be deployed in different scenarios, such as indoors, urban areas, rural areas, etc., its capabilities and requirements are also quite different, so it cannot be generalized and must be analyzed in detail in conjunction with specific deployment scenarios.
  • Typical applications of URLLC include: industrial automation, power automation, telemedicine operations (surgery), traffic safety protection, etc.
  • the typical characteristics of mMTC include: high connection density, small data volume, delay-insensitive services, low cost and long service life of the module.
  • EN-DC LTE-NR Dual Connectivity
  • an LTE base station eNB serves as a master node (Master Node, MN)
  • an NR base station gNB or en-gNB
  • secondary Node Secondary Node, SN
  • other DC modes namely NE-DC, 5GC-EN-DC, and NR DC.
  • EPC the core network connected to the access network
  • 5GC the core network connected to other DC modes
  • a dual-connectivity (DC) enhanced architecture that is, a multiple-connectivity (Multiple Connectivity, MC) architecture.
  • MC multiple Connectivity
  • the MC architecture may be an MR-MC architecture.
  • RRC Radio Resource Control
  • RRC_INACTIVE Radio Resource Control
  • RRC_IDLE state (abbreviated as idle state): mobility is UE-based cell selection and reselection, paging is initiated by the Core Network (Core Network, CN), and the paging area is configured by the CN. There is no UE context on the base station side, and no RRC connection.
  • RRC_CONNECTED state (referred to as connected state for short): There is an RRC connection, and UE context exists on the base station side and the UE side. The network side knows that the location of the UE is of a specific cell level. Mobility is the mobility controlled by the network side. Unicast data can be transmitted between the UE and the base station.
  • Mobility is UE-based cell selection and reselection, there is a connection between CN-NR, UE context is stored on a certain base station, and paging is triggered by RAN, based on The paging area of the RAN is managed by the RAN, and the network side knows that the location of the UE is based on the paging area level of the RAN.
  • MBMS was introduced in 3GPP Release 6 (Release 6, R6).
  • MBMS is a technology that transmits data from one data source to multiple UEs by sharing network resources. This technology can effectively utilize network resources while providing multimedia services. Realize the broadcast and multicast of multimedia services at a higher rate (such as 256kbps).
  • 3GPP Due to the low spectrum efficiency of MBMS in 3GPP R6, it is not enough to effectively carry and support the operation of mobile TV-type services. Therefore, in LTE, 3GPP clearly proposed to enhance the ability to support downlink high-speed MBMS services, and determined the design requirements for the physical layer and air interface.
  • eMBMS evolved MBMS
  • SFN Single Frequency Network
  • MBSFN Multimedia Broadcast Multicast Service Single Frequency Network
  • MBSFN uses a unified frequency to send service data in all cells at the same time, but To ensure synchronization between the cells. This method can greatly improve the overall signal-to-noise ratio distribution of the cell, and the spectrum efficiency will be greatly improved accordingly.
  • eMBMS realizes the broadcast and multicast of services based on the IP multicast protocol.
  • MBMS has only a broadcast bearer mode, and no multicast bearer mode.
  • reception of MBMS services is suitable for UEs in idle state or connected state.
  • 3GPP R13 introduced the single cell point to multipoint (Single Cell Point To Multiploint, SC-PTM) concept, and SC-PTM is based on the MBMS network architecture.
  • SC-PTM Single Cell Point To Multiploint
  • SC-MCCH Single Cell-Multicast Control Channel
  • SC-MTCH Single Cell-Multicast Transport Channel
  • SC-MCCH and SC-MTCH are mapped to downlink shared channel (Downlink-Shared Channel, DL-SCH), and further, DL-SCH is mapped to physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), where SC -MCCH and SC-MTCH belong to logical channels, DL-SCH belongs to transport channels, and PDSCH belongs to physical channels.
  • SC-MCCH and SC-MTCH do not support Hybrid Automatic Repeat reQuest (HARQ) operations.
  • HARQ Hybrid Automatic Repeat reQuest
  • the MBMS introduces a new system information block (System Information Block, SIB) type, namely SIB20.
  • SIB System Information Block
  • the configuration information of the SC-MCCH includes: the modification period of the SC-MCCH, the repetition period of the SC-MCCH, and information such as radio frames and subframes for scheduling the SC-MCCH.
  • SFN represents the system frame number of the radio frame
  • mcch-RepetitionPeriod represents the repetition period of SC-MCCH
  • mcch-Offset represents SC-MCCH The offset.
  • the subframe for scheduling SC-MCCH is indicated by sc-mcch-Subframe.
  • the SC-MCCH is scheduled through the Physical Downlink Control Channel (PDCCH).
  • a new radio network temporary identity Radio Network Tempory Identity, RNTI
  • SC-RNTI Single Cell RNTI
  • SC-N-RNTI Single Cell Notification RNTI
  • the SC -N-RNTI has a fixed value of FFFB; further, one of the 8 bits of DCI 1C can be used to indicate the change notification.
  • the configuration information of the SC-PTM is based on the SC-MCCH configured by the SIB20, and then the SC-MCCH is configured with the SC-MTCH, and the SC-MTCH is used to transmit service data.
  • the SC-MCCH only transmits one message (that is, SCPTMConfiguration), which is used to configure the configuration information of the SC-PTM.
  • the configuration information of SC-PTM includes: Temporary Mobile Group Identity (TMGI), session identifier (seession id), group RNTI (Group RNTI, G-RNTI), discontinuous reception (Discontinuous Reception, DRX) configuration information And the SC-PTM business information of the neighboring cell, etc.
  • TMGI Temporary Mobile Group Identity
  • SCPTMConfiguration Session id
  • group RNTI Group RNTI
  • G-RNTI Group RNTI
  • DRX discontinuous reception
  • the SC-PTM business information of the neighboring cell etc.
  • ROHC Robust Header Compression
  • the downlink discontinuous reception of SC-PTM is controlled by the following parameters: onDurationTimerSCPTM, drx-InactivityTimerSCPTM, SC-MTCH-SchedulingCycle, and SC-MTCH-SchedulingOffset.
  • SC-PTM service continuity adopts the concept of MBMS service continuity based on SIB15, namely "SIB15+MBMSInterestIndication" mode.
  • the service continuity of the UE in the idle state is based on the concept of frequency priority.
  • the UE performs cell reselection to a target cell in an idle state or in an inactive state, and the target cell does not support the transmission of MBMS services, for example, an LTE cell or an NR cell does not send MBMS service data.
  • the UE enters the connected state and is configured with MR-DC.
  • the secondary cell in the MR-DC ie, the cell corresponding to the SN) supports the transmission of MBMS services, and the UE needs to receive the MBMS services.
  • the UE switches from a cell that supports MBMS service transmission to a cell that does not support MBMS service transmission in the connected state.
  • the configured secondary cell supports MBMS service transmission, and the UE has received MBMS service transmission.
  • the MBMS service that the UE is interested in can be received through the secondary cell.
  • the first SIB includes the configuration information of the first MCCH.
  • the first MCCH is the control channel of the MBMS service.
  • the first SIB is used to configure the configuration information of the control channel of NR MBMS.
  • the control channel of NR MBMS may also be called NR MCCH (that is, the first MCCH).
  • the first MCCH is used to carry the first signaling.
  • the embodiment of this application does not limit the name of the first signaling.
  • the first signaling is signaling A
  • the first signaling includes at least one first MTCH.
  • the first MTCH is a service channel of the MBMS service (also referred to as a data channel or a transmission channel), and the first MTCH is used to transmit MBMS service data (such as NR MBMS service data).
  • the first MCCH is used to configure the configuration information of the NR MBMS traffic channel.
  • the NR MBMS traffic channel may also be called NR MTCH (that is, the first MTCH).
  • the first signaling is used to configure a NR MBMS service channel, service information corresponding to the service channel, and scheduling information corresponding to the service channel.
  • the service information corresponding to the service channel for example, TMGI, session id, and other identification information identifying the service.
  • the scheduling information corresponding to the traffic channel for example, the RNTI used when the MBMS service data corresponding to the traffic channel is scheduled, such as G-RNTI, DRX configuration information, etc.
  • the transmission of the first MCCH and the first MTCH is scheduled based on the PDCCH.
  • the RNTI used for scheduling the PDCCH of the first MCCH uses a unique identifier of the entire network, that is, a fixed value.
  • the RNTI used by the PDCCH for scheduling the first MTCH is configured through the first MCCH.
  • the embodiment of the present application does not impose restrictions on the naming of the first SIB, the first MCCH, and the first MTCH.
  • the first SIB may also be abbreviated as SIB
  • the first MCCH may also be abbreviated as MCCH
  • the first MTCH may also be abbreviated as MTCH.
  • the PDCCH used to schedule the MCCH is configured through the SIB. (Ie MCCH PDCCH) and notification PDCCH, wherein the DCI carried by MCCH PDCCH is used to schedule the PDSCH (ie MCCH PDSCH) used to transmit the MCCH.
  • M PDCCHs (that is, MTCH 1PDCCH, MTCH 2PDCCH, ..., MTCH M PDCCH) for scheduling MTCH are configured through MCCH, where DCI carried by MTCH n PDCCH schedules PDSCH for transmitting MTCH n (ie MTCH n PDSCH) , N is an integer greater than or equal to 1 and less than or equal to M. 4, MCCH and MTCH are mapped to DL-SCH, and further, DL-SCH is mapped to PDSCH, where MCCH and MTCH belong to logical channels, DL-SCH belongs to transport channels, and PDSCH belongs to physical channels.
  • FIG. 5 is a schematic flowchart of a service data transmission method provided by an embodiment of the application. As shown in FIG. 5, the service data transmission method includes the following steps:
  • Step 501 The terminal device sends first indication information, and the first cell receives the first indication information, where the first indication information is used to indicate that the terminal device needs to receive the MBMS service.
  • the first cell is a target cell for the terminal device to perform cell change, and the first cell does not support sending the MBMS service.
  • the cell change refers to cell reselection or cell handover.
  • the terminal device when the target cell where the terminal device performs cell change does not support sending the MBMS service, the terminal device sends first indication information, and the first indication information is used to indicate that the terminal device needs to receive MBMS business.
  • the terminal device may send the first indication information to the first cell, or the terminal device may send the first indication information to the third cell, and the third cell forwards the first indication information To the first cell.
  • the first indication information carries configuration information of the MBMS service.
  • the configuration information of the MBMS service includes at least one of the following: frequency information of the MBMS service, identification information of the MBMS service (such as TMGI, session id), G-RNTI, and identification information of the last served cell.
  • the MBMS service is a service that needs to be received after the terminal device performs a cell change.
  • the MBMS service is a service that is ongoing before the terminal device performs cell change. Further, the MBMS service is a service that is ongoing on a third cell before the terminal device performs the cell change, and the third cell is the original cell where the terminal device performs the cell change.
  • the first cell receiving the first indication information may determine whether it supports sending the MBMS service based on the configuration information of the MBMS service carried in the first indication information.
  • a terminal device in an idle state or in an inactive state or an active state sends first indication information to the first cell, so that the first cell receives the first indication information sent by the terminal device .
  • the terminal device in the active state (through dedicated signaling) sends the first indication information to the third cell, and the third cell (through the handover request message) sends the first indication information to The first cell, and thus the first cell, receives the first indication information sent by the third cell.
  • the third indication information is carried in a handover request message.
  • Step 502 The first cell determines that the second cell supports sending the MBMS service, and provides the MBMS service for the terminal device through the second cell.
  • the MBMS service may be provided to the terminal device in any of the following manners.
  • the first cell determines that the second cell supports the transmission of the MBMS service; the first cell triggers the terminal device to switch from the first cell to the second cell, and serves the terminal through the second cell
  • the device provides the MBMS service.
  • the terminal device receives the handover instruction sent by the first cell, switches from the first cell to the second cell, and receives the MBMS service sent by the second cell.
  • the first cell determines that the second cell supports sending the MBMS service; the first cell configures the second cell as a secondary cell in a dual connectivity architecture, where the second cell and the first cell A dual connectivity architecture is formed, and the first cell serves as the primary cell in the dual connectivity architecture; the first cell sends second indication information to the second cell, and the second indication information carries the information of the MBMS service Configuration information, the configuration information of the MBMS service is used by the second cell to send the MBMS service to the terminal device through dedicated signaling, or to send the MBMS service to the terminal device in a multicast manner. For the terminal device, the terminal device receives the MBMS service sent by the second cell through dedicated signaling, or the MBMS service sent by multicast.
  • the second indication information is carried in a secondary node addition request message, or a secondary node modification request message, or a message between any two cells.
  • the first cell determines that the second cell supports sending the MBMS service; the first cell sends an MBMS service request to the second cell, where the MBMS service request carries configuration information of the MBMS service; the first The cell receives the MBMS service sent by the second cell; the first cell sends the MBMS service to the terminal device through dedicated signaling. For the terminal device, the terminal device receives the MBMS service from the first cell forwarded by the first cell through dedicated signaling.
  • the first cell receives a Packet Data Convergence Protocol (PDCP) packet data unit (PDU) or an IP data packet corresponding to the MBMS service sent by the second cell , Or Transport Block (TB) data.
  • PDCP Packet Data Convergence Protocol
  • PDU Packet Data Convergence Protocol
  • IP data packet corresponding to the MBMS service sent by the second cell
  • Transport Block TB
  • the terminal equipment in the idle state or in the inactive state is performing the MBMS service on the original cell (that is, the third cell), and then performs cell reselection, and the reselected target cell (that is, the first cell) does not support the transmission of the MBMS service , Or after performing cell reselection, the terminal device wants to receive a certain MBMS service, but the target cell (ie, the first cell) after the reselection does not support the transmission of the MBMS service. In this case, the terminal device sends the first
  • the indication information is given to the network side (that is, the first cell) to indicate that the terminal device on the network side is receiving the MBMS service and the configuration information of the MBMS service. After the network side (that is, the first cell) obtains the first indication information, it can perform any of the following operations:
  • the terminal device is handed over to the second cell, and the second cell supports the transmission of the MBMS service.
  • the second cell As a secondary cell (cell corresponding to SN).
  • the primary cell (the cell corresponding to the MN, that is, the first cell) indicates the configuration information of the MBMS service that the current terminal device of the second cell is interested in.
  • the second cell sends the MBMS service to the terminal device through dedicated signaling, or configures the configuration information of the MBMS service for the terminal device, so that the terminal device receives the MBMS service in a multicast manner.
  • the first cell sends an MBMS service request to the second cell, and the second cell supports the sending of the MBMS service.
  • the MBMS service request carries the configuration information of the MBMS service.
  • the second cell sends the corresponding MBMS service to the first cell, and the first cell sends the MBMS service to the terminal device through dedicated signaling.
  • the MBMS service sent by the second cell to the first cell may be PDCP PDU or IP packet or TB data.
  • the terminal device processing the connected state sends first indication information to the currently served network side (that is, the third cell), where the first indication information is used to indicate the configuration information of the ongoing MBMS service of the terminal device.
  • the terminal device sends the first indication information to the third cell through dedicated signaling.
  • the cell handover is performed, and the original cell (that is, the third cell) of the cell handover sends the first indication information to the target cell (that is, the first cell) through a handover request message. If the target cell (that is, the first cell) does not support the MBMS service can perform any of the following operations:
  • the primary cell (the cell corresponding to the MN, that is, the first cell) indicates the configuration information of the MBMS service that the current terminal device of the second cell is interested in.
  • the second cell sends the MBMS service to the terminal device through dedicated signaling, or configures the configuration information of the MBMS service for the terminal device, so that the terminal device receives the MBMS service in a multicast manner.
  • the first cell sends an MBMS service request to the second cell, and the second cell supports the sending of the MBMS service.
  • the MBMS service request carries the configuration information of the MBMS service.
  • the second cell sends the corresponding MBMS service to the first cell, and the first cell sends the MBMS service to the terminal device through dedicated signaling.
  • the MBMS service sent by the second cell to the first cell may be PDCP PDU or IP packet or TB data.
  • the terminal device processing the connected state sends first indication information to the network side (ie, the first cell) to indicate that the terminal device on the network side is receiving the MBMS service and the configuration information of the MBMS service.
  • the network side that is, the first cell
  • obtains the first indication information it can perform any of the following operations:
  • the terminal device is handed over to the second cell, and the second cell supports the transmission of the MBMS service.
  • the second cell As a secondary cell (cell corresponding to SN).
  • the primary cell (the cell corresponding to the MN, that is, the first cell) indicates the configuration information of the MBMS service that the current terminal device of the second cell is interested in.
  • the second cell sends the MBMS service to the terminal device through dedicated signaling, or configures the configuration information of the MBMS service for the terminal device, so that the terminal device receives the MBMS service in a multicast manner.
  • the first cell sends an MBMS service request to the second cell, and the second cell supports the sending of the MBMS service.
  • the MBMS service request carries the configuration information of the MBMS service. Then, the second cell sends the corresponding MBMS service to the first cell, and the first cell sends the MBMS service to the terminal device through dedicated signaling.
  • Fig. 6 is a schematic diagram 1 of the structural composition of a service data transmission device provided by an embodiment of the application. As shown in Fig. 6, the service data transmission device includes:
  • the receiving unit 601 is configured to receive first indication information, where the first indication information is used to indicate that the terminal device needs to receive the MBMS service;
  • the determining unit 602 is configured to determine that the second cell supports sending the MBMS service, and provide the MBMS service for the terminal device through the second cell.
  • the first indication information carries configuration information of the MBMS service.
  • the device further includes:
  • the handover unit (not shown in the figure) is configured to trigger the terminal device to switch from the first cell to the second cell, and provide the MBMS service for the terminal device through the second cell.
  • the device further includes:
  • a configuration unit (not shown in the figure), configured to configure the second cell as a secondary cell in a dual connectivity architecture, where the first cell is used as a primary cell in the dual connectivity architecture;
  • the sending unit 603 is configured to send second indication information to the second cell, where the second indication information carries configuration information of the MBMS service, and the configuration information of the MBMS service is used by the second cell through a dedicated message.
  • the MBMS service is sent to the terminal device, or the MBMS service is sent to the terminal device in a multicast manner.
  • the second indication information is carried in a secondary node addition request message or a secondary node modification request message.
  • the device further includes:
  • the sending unit 603 is configured to send an MBMS service request to the second cell, where the MBMS service request carries configuration information of the MBMS service;
  • the receiving unit 601 is further configured to receive the MBMS service sent by the second cell;
  • the sending unit 603 is further configured to send the MBMS service to the terminal device through dedicated signaling.
  • the receiving unit 601 is further configured to receive PDCP PDU, or IP data packet, or TB data corresponding to the MBMS service sent by the second cell.
  • the first cell is a target cell for the terminal device to perform cell change, and the first cell does not support sending the MBMS service.
  • the MBMS service is a service that needs to be received after the terminal device performs a cell change.
  • the MBMS service is a service that is ongoing before the terminal device performs cell change.
  • the MBMS service is a service that is ongoing on a third cell before the terminal device performs cell change, and the third cell is the original cell where the terminal device performs cell change;
  • the receiving unit 601 is configured to receive the first indication information sent by the third cell; or, receive the first indication information sent by the terminal device.
  • the cell change refers to cell reselection or cell handover.
  • FIG. 7 is a second schematic diagram of the structural composition of the service data transmission device provided by the embodiment of the application. As shown in FIG. 7, the service data transmission device includes:
  • the sending unit 701 is configured to send first indication information to the first cell, where the first indication information is used to indicate that the terminal device needs to receive the MBMS service;
  • the receiving unit 702 is configured to receive an MBMS service provided by a second cell, where the second cell is a cell determined by the first cell to support sending the MBMS service.
  • the first indication information carries configuration information of the MBMS service.
  • the receiving unit 702 is configured to receive a handover instruction sent by the first cell, switch from the first cell to the second cell, and receive all the handover instructions sent by the second cell. Describes the MBMS business.
  • the second cell and the first cell form a dual connectivity architecture
  • the second cell is a secondary cell in the dual connectivity architecture
  • the first cell serves as the dual connectivity architecture.
  • the receiving unit 702 is configured to receive the MBMS service sent by the second cell through dedicated signaling, or the MBMS service sent by multicast.
  • the receiving unit 702 is configured to receive the MBMS service from the first cell forwarded by the first cell through dedicated signaling.
  • the first cell is a target cell for the terminal device to perform cell change, and the first cell does not support sending the MBMS service.
  • the MBMS service is a service that needs to be received after the terminal device performs a cell change.
  • the MBMS service is a service that is ongoing before the terminal device performs cell change.
  • the cell change refers to cell reselection or cell handover.
  • FIG. 8 is a schematic structural diagram of a communication device 800 provided by an embodiment of the present application.
  • the communication device may be a terminal device or a network device.
  • the communication device 800 shown in FIG. 8 includes a processor 810.
  • the processor 810 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the communication device 800 may further include a memory 820.
  • the processor 810 may call and run a computer program from the memory 820 to implement the method in the embodiment of the present application.
  • the memory 820 may be a separate device independent of the processor 810, or may be integrated in the processor 810.
  • the communication device 800 may further include a transceiver 830, and the processor 810 may control the transceiver 830 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 830 may include a transmitter and a receiver.
  • the transceiver 830 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 800 may specifically be a network device in an embodiment of the present application, and the communication device 800 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, it will not be repeated here. .
  • the communication device 800 may specifically be a mobile terminal/terminal device of an embodiment of the application, and the communication device 800 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the application.
  • I won’t repeat it here.
  • FIG. 9 is a schematic structural diagram of a chip of an embodiment of the present application.
  • the chip 900 shown in FIG. 9 includes a processor 910, and the processor 910 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 900 may further include a memory 920.
  • the processor 910 can call and run a computer program from the memory 920 to implement the method in the embodiment of the present application.
  • the memory 920 may be a separate device independent of the processor 910, or may be integrated in the processor 910.
  • the chip 900 may further include an input interface 930.
  • the processor 910 can control the input interface 930 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip 900 may further include an output interface 940.
  • the processor 910 can control the output interface 940 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip mentioned in the embodiment of the present application may also be referred to as a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip, etc.
  • FIG. 10 is a schematic block diagram of a communication system 1000 according to an embodiment of the present application. As shown in FIG. 10, the communication system 1000 includes a terminal device 1010 and a network device 1020.
  • the terminal device 1010 can be used to implement the corresponding function implemented by the terminal device in the above method
  • the network device 1020 can be used to implement the corresponding function implemented by the network device in the above method. For brevity, it will not be repeated here. .
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM, ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is to say, the memory in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application , For the sake of brevity, I won’t repeat it here.
  • the embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For the sake of brevity, I will not repeat them here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program runs on the computer, it causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application.
  • the computer program runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present 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 disk and other media that can store program code .

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  • Computer Networks & Wireless Communication (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

Selon des modes de réalisation, la présente invention concerne un procédé et un appareil de transmission de données, un dispositif réseau et un dispositif terminal. Le procédé comprend les étapes suivantes: une première cellule reçoit une première information d'indication, la première information d'indication étant utilisée pour indiquer qu'un dispositif terminal doit recevoir un service de diffusion/multidiffusion multimédia (MBMS); et la première cellule détermine qu'une seconde cellule prend en charge la transmission du service MBMS, et la fourniture du service MBMS au dispositif terminal à travers la seconde cellule.
PCT/CN2019/106509 2019-09-18 2019-09-18 Procédé et appareil de transmission de données de service, dispositif de réseau et dispositif terminal WO2021051320A1 (fr)

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PCT/CN2019/106509 WO2021051320A1 (fr) 2019-09-18 2019-09-18 Procédé et appareil de transmission de données de service, dispositif de réseau et dispositif terminal
CN201980095151.0A CN113661722B (zh) 2019-09-18 2019-09-18 一种业务数据传输方法及装置、网络设备、终端设备

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