WO2022133877A1 - Procédé et appareil d'indication de service mbs, dispositif terminal et dispositif de réseau - Google Patents

Procédé et appareil d'indication de service mbs, dispositif terminal et dispositif de réseau Download PDF

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Publication number
WO2022133877A1
WO2022133877A1 PCT/CN2020/138911 CN2020138911W WO2022133877A1 WO 2022133877 A1 WO2022133877 A1 WO 2022133877A1 CN 2020138911 W CN2020138911 W CN 2020138911W WO 2022133877 A1 WO2022133877 A1 WO 2022133877A1
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WIPO (PCT)
Prior art keywords
terminal device
rrc
mbs service
message
mbs
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PCT/CN2020/138911
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English (en)
Chinese (zh)
Inventor
王淑坤
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Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2020/138911 priority Critical patent/WO2022133877A1/fr
Priority to CN202080105637.0A priority patent/CN116250259A/zh
Publication of WO2022133877A1 publication Critical patent/WO2022133877A1/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 technologies, and in particular, to a method and apparatus for indicating a Multicast Broadcast Service (MBS) service, a terminal device, and a network device.
  • MMS Multicast Broadcast Service
  • a cell In a Long Term Evolution (Long Term Evolution, LTE) system, a cell has only one bandwidth (ie, a system bandwidth), and a terminal device in the cell will work on the bandwidth.
  • LTE Long Term Evolution
  • NR New Radio
  • the network side configures multiple dedicated bandwidth parts (Band Width Parts) for the terminal device. BWP), the terminal device can switch between these dedicated BWPs in the RRC connection state.
  • the broadcast MBS service is supported, and the terminal equipment can receive the broadcast MBS service in the RRC idle state or the RRC inactive state or the RRC connected state.
  • the network side does not know the MBS service previously received by the terminal device. If a dedicated BWP is configured for the terminal device according to the current method, the terminal device cannot receive the MBS service normally. .
  • the embodiments of the present application provide an MBS service indication method and apparatus, terminal equipment, and network equipment.
  • the terminal device sends the identification information of the MBS service to the network device, where the MBS service is the MBS service expected by the terminal device or the MBS service being received;
  • the identification information of the MBS service is used for the configuration of the dedicated downlink BWP of the terminal device and/or the identification information of the MBS service is used to determine the target cell to be handed over by the terminal device.
  • the network device receives the identification information of the MBS service sent by the terminal device, where the MBS service is the MBS service expected by the terminal device or the MBS service being received;
  • the identification information of the MBS service is used by the network device to configure a dedicated downlink BWP for the terminal device and/or the identification information of the MBS service is used by the network device to select the target to be handed over for the terminal device community.
  • the device for indicating an MBS service provided by the embodiment of the present application is applied to a terminal device, and the device includes:
  • a communication unit configured to send identification information of an MBS service to a network device, where the MBS service is an MBS service expected by the terminal device or an MBS service being received;
  • the identification information of the MBS service is used for the configuration of the dedicated downlink BWP of the terminal equipment and/or the identification information of the MBS service is used to determine the target cell to be handed over by the terminal equipment.
  • the device for indicating an MBS service provided by the embodiment of the present application is applied to network equipment, and the device includes:
  • a communication unit configured to receive identification information of an MBS service sent by a terminal device, where the MBS service is an MBS service expected by the terminal device or an MBS service being received;
  • the identification information of the MBS service is used by the network device to configure a dedicated downlink BWP for the terminal device and/or the identification information of the MBS service is used by the network device to select the target to be handed over for the terminal device community.
  • the terminal device provided by the embodiments 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 instruction method of the MBS service.
  • the network device provided by the embodiments 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 instruction method of the MBS service.
  • the chip provided by the embodiment of the present application is used to implement the above-mentioned indication method of the MBS service.
  • the chip includes: a processor for invoking and running a computer program from the memory, so that the device installed with the chip executes the above-mentioned instruction method of the MBS service.
  • 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 MBS service instruction method.
  • the computer program product provided by the embodiments of the present application includes computer program instructions, and the computer program instructions cause the computer to execute the above-mentioned MBS service instruction method.
  • the computer program provided by the embodiment of the present application when it runs on a computer, enables the computer to execute the above-mentioned MBS service instruction method.
  • the terminal device indicates to the network device the MBS service expected by the terminal device or the identification information of the MBS service being received, so that the network device can configure the terminal device with a reasonable dedicated service according to the identification information of the MBS service.
  • the downlink BWP and/or the correct selection of the target cell to be handed over ensures that the terminal equipment can normally receive the MBS service.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a schematic flowchart 1 of a method for indicating an MBS service provided by an embodiment of the present application
  • FIG. 3 is a second schematic flowchart of a method for indicating an MBS service provided by an embodiment of the present application
  • FIG. 4 is a schematic flowchart 3 of a method for indicating an MBS service provided by an embodiment of the present application
  • FIG. 5 is a fourth schematic flowchart of a method for indicating an MBS service provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart 5 of a method for indicating an MBS service provided by an embodiment of the present application
  • FIG. 7 is a schematic diagram 1 of the structure and composition of an indication device for an MBS service provided by an embodiment of the present application;
  • FIG. 8 is a second schematic diagram of the structure and composition of an indication device for an MBS service provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • FIG. 11 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 systems or future communication systems etc.
  • 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 referred to as a communication terminal, a terminal).
  • the network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals located within 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
  • the network device can be a mobile switching center, a relay station, an access point, a vehicle-mounted 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.
  • the communication system 100 also includes at least one terminal 120 located within the coverage of the network device 110 .
  • Terminal includes, but is not limited to, connections via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connections; and/or another data connection/network; and/or via a wireless interface, e.g. for cellular networks, Wireless Local Area Networks (WLAN), digital television networks such as DVB-H networks, satellite networks, AM-FM A broadcast transmitter; and/or a device of another terminal configured to receive/transmit a communication signal; and/or an Internet of Things (IoT) device.
  • PSTN Public Switched Telephone Networks
  • DSL Digital Subscriber Line
  • WLAN Wireless Local Area Networks
  • WLAN Wireless Local Area Networks
  • digital television networks such as DVB-H networks, satellite networks, AM-FM A broadcast transmitter
  • IoT Internet of Things
  • a terminal arranged to communicate through a wireless interface may be referred to as a "wireless communication terminal", “wireless terminal” or “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communications System (PCS) terminals that may combine cellular radio telephones with data processing, facsimile, and data communication capabilities; may include radio telephones, pagers, Internet/Intranet PDAs with networking access, web browsers, memo pads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or others including radiotelephone transceivers electronic device.
  • PCS Personal Communications System
  • GPS Global Positioning System
  • a terminal may refer to an access terminal, user equipment (UE), subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device.
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a 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 future evolved PLMNs, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • direct terminal (Device to Device, D2D) communication may be performed between the terminals 120 .
  • the 5G communication system or the 5G network may also be referred to as a new radio (New Radio, NR) system or an NR network.
  • New Radio NR
  • 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 This is not limited.
  • the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.
  • a device having a communication function in the network/system may be referred to as a communication device.
  • the communication device may include a network device 110 and a terminal 120 with a communication function, and the network device 110 and the terminal 120 may be the specific devices described above, which will not be repeated here;
  • the device may further 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 this embodiment of the present application.
  • 5G 3rd Generation Partnership Project
  • eMBB Enhanced Mobile Broadband
  • URLLC Ultra-Reliable Low-Latency Communications
  • mMTC Massive Machine-Type Communications
  • eMBB still aims at users' access to multimedia content, services and data, and its demand is growing rapidly.
  • eMBB since eMBB may be deployed in different scenarios, such as indoor, urban, rural, etc., its capabilities and requirements are also quite different, so it cannot be generalized and must be analyzed in detail in combination with specific deployment scenarios.
  • Typical applications of URLLC include: industrial automation, power automation, telemedicine operations (surgery), traffic safety assurance, etc.
  • Typical features of mMTC include: high connection density, small data volume, latency-insensitive services, low cost and long service life of the module.
  • RRC_INACTIVE Radio Resource Control
  • RRC_INACTIVE Radio Resource Control
  • RRC_IDLE state (referred to as idle state): mobility is UE-based cell selection 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 and no RRC connection on the base station side.
  • RRC_CONNECTED state (referred to as connected state): there is an RRC connection, and a UE context exists on the base station side and the UE side.
  • the network side knows that the location of the UE is at the specific cell level. Mobility is the mobility controlled by the network side. Unicast data can be transmitted between the UE and the base station.
  • RRC_INACTIVE state (referred to as inactive state): mobility is UE-based cell selection reselection, there is a connection between CN-NR, UE context exists on a certain base station, paging is triggered by RAN, based on The paging area of the RAN is managed by the RAN, and the network side knows the location of the UE based on the paging area level of the RAN.
  • MBMS Multimedia Broadcast Multicast Service
  • MBMS is a technology that transmits data from a data source to multiple terminal devices by sharing network resources. This technology can effectively utilize network resources while providing multimedia services, and realize the broadcast of multimedia services at higher rates (such as 256kbps). and multicast.
  • 3GPP clearly proposes to enhance the support capability for downlink high-speed MBMS services, and determines 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 uniform frequency to send service data in all cells at the same time, but To ensure synchronization between cells. In this way, the overall signal-to-noise ratio distribution of the cell can be greatly improved, and the spectral efficiency will also be greatly improved accordingly.
  • eMBMS implements service broadcast and multicast based on IP multicast protocol.
  • MBMS has only a broadcast bearer mode and no multicast bearer mode.
  • the reception of the MBMS service is applicable to the terminal equipment in the idle state or the connected state.
  • 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), further, DL-SCH is mapped to physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), wherein, 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 (Hybrid Automatic Repeat reQuest, HARQ) operations.
  • Hybrid Automatic Repeat reQuest Hybrid Automatic Repeat reQuest
  • 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 the radio frame and subframe in which the SC-MCCH is scheduled.
  • SFN represents the system frame number of the radio frame
  • mcch-RepetitionPeriod represents the repetition period of SC-MCCH
  • mcch-Offset represents SC-MCCH offset.
  • the SC-MCCH is scheduled through the Physical Downlink Control Channel (PDCCH).
  • PDCCH Physical Downlink Control Channel
  • RNTI Radio Network Tempory Identity
  • SC-RNTI Single Cell RNTI
  • the fixed value of SC-RNTI is FFFC.
  • a new RNTI is introduced, that is, a single cell notification RNTI (Single Cell Notification RNTI, SC-N-RNTI) to identify the PDCCH (such as the notification PDCCH) used to indicate the change notification of the SC-MCCH, optionally, the SC
  • the fixed value of -N-RNTI is FFFB; further, one of the 8 bits (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 configures the SC-MTCH, and the SC-MTCH is used to transmit service data.
  • the SC-MCCH only transmits one message (ie, 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 (session id), group RNTI (Group RNTI, G-RNTI), discontinuous reception (Discontinuous Reception, DRX) configuration information And the SC-PTM service information of neighboring cells, etc.
  • TMGI Temporary Mobile Group Identity
  • session id session identifier
  • group RNTI Group RNTI, G-RNTI
  • discontinuous reception discontinuous Reception
  • DRX discontinuous Reception
  • Downlink discontinuous reception of SC-PTM is controlled by the following parameters: onDurationTimerSCPTM, drx-InactivityTimerSCPTM, SC-MTCH-SchedulingCycle, and SC-MTCH-SchedulingOffset.
  • the downstream SC-PTM service is received only when the timer onDurationTimerSCPTM or drx-InactivityTimerSCPTM is running.
  • SC-PTM business continuity adopts the concept of MBMS business continuity based on SIB15, namely "SIB15+MBMSInterestIndication" mode.
  • SIB15 namely "SIB15+MBMSInterestIndication" mode.
  • the service continuity of terminal equipment in idle state is based on the concept of frequency priority.
  • the configuration of SC-PTM is to configure SC-MCCH based on SIB20, and then configure SC-MTCH based on SC-MCCH.
  • a cell has one and only one SC-MCCH, that is, the terminal equipment needs to re-acquire the SC-MCCH after cell reselection, which will cause service interruption.
  • the MBMS services in the above solution include but are not limited to multicast services, multicast services, and MBS services.
  • the embodiments of the present application take the MBS service as an example for description, and the description of "MBS service” may also be replaced with "multicast service” or “multicast service” or “broadcast service” or "MBMS service”.
  • NR supports broadcast MBS services, configures MCCH through BCCH, and configures MTCH through MCCT.
  • the MCCH is used to transmit the configuration information of the MBS service
  • the MTCH is used to transmit the MBS service data.
  • a cell has only one MCCH, and the MCCH carries signaling (hereinafter referred to as MCCH signaling), and configuration information of multiple MBS services is configured through the MCCH signaling.
  • the terminal equipment in the RRC idle state, the RRC inactive state, and the RRC connected state can all receive the broadcast MBS service.
  • the terminal equipment In order to ensure the continuity of the broadcasted MBS service received by the terminal equipment in the RRC connection state, the terminal equipment needs to indicate the identification information of the MBS service that the network side terminal equipment is interested in or is receiving when the terminal equipment is in the RRC connection state, so that the network side can make a handover decision.
  • the cell that supports the MBS service is preferentially considered as the target cell for handover.
  • the network side configures multiple dedicated BWPs (such as a maximum of 4 dedicated BWPs) for the terminal device, and the terminal device can switch between these dedicated BWPs in the RRC connection state , for example, switching between BWPs is implemented based on mechanisms such as DCI or timers.
  • the terminal device receives the broadcasted MBS service in the RRC idle state or the RRC inactive state. After entering the RRC connected state from the RRC idle state or the RRC inactive state, the network side does not know the MBS service previously received by the terminal device. Configuring a dedicated BWP for a terminal device will cause the terminal device to fail to receive MBS services normally. To this end, the following technical solutions of the embodiments of the present application are proposed.
  • the terminal equipment reports the identification information of the MBS services that it is interested in or is receiving in the RRC idle state or the RRC inactive state, so as to facilitate the network side to configure an appropriate dedicated BWP and prevent the terminal equipment from performing unnecessary operations.
  • BWP handover ensures that the MBS service is normally received.
  • FIG. 2 is a schematic flowchart 1 of a method for indicating an MBS service provided by an embodiment of the present application. As shown in FIG. 2 , the method for indicating an MBS service includes the following steps:
  • Step 201 The terminal device sends the identification information of the MBS service to the network device, and the network device receives the identification information of the MBS service sent by the terminal device, where the MBS service is the MBS service expected by the terminal device or the MBS service being received; wherein, The identification information of the MBS service is used for the configuration of the dedicated downlink BWP of the terminal device and/or the identification information of the MBS service is used to determine the target cell to be handed over by the terminal device.
  • the identification information of the MBS service is used by the network device to configure a dedicated downlink BWP for the terminal device and/or the identification information of the MBS service is used by the network device to select for the terminal device The target cell to be handed over.
  • the terminal device can receive the broadcast MBS service in the RRC idle state, the RRC inactive state, or the RRC connected state.
  • the terminal device receives the broadcasted MBS service in the RRC idle state or the RRC inactive state
  • the terminal device if the terminal device enters the RRC connected state from the RRC idle state or the RRC inactive state, the terminal device can enter the RRC connected state or enter the RRC connected state.
  • the identification information of the MBS service is sent to the network device.
  • the MBS service here refers to the MBS service expected by the terminal device in the previous RRC idle state or the RRC inactive state or the MBS service being received, so that the network
  • the device may configure a dedicated downlink BWP for the terminal device and/or select a target cell to be handed over for the terminal device according to the identification information of the MBS service indicated by the terminal device.
  • the identification information of the MBS service may be, but is not limited to, TMGI, G-RNTI, and the like.
  • the description about “desired MBS service” may also be replaced with “interested MBS service”.
  • the terminal device After entering the RRC connection state, the terminal device sends the identification information of the MBS service to the network device through an RRC message.
  • the RRC message may be an RRC message that has not undergone security processing, or an RRC message that has undergone security processing. It should be noted that the RRC message transmitted before the AS layer security activation belongs to the RRC message without security processing, and the RRC message transmitted after the AS layer security activation belongs to the security processed RRC message. Among them, the security activation of the AS layer takes the security activation complete (Securtiy mode complete) message as the judgment standard.
  • security activation complete Securtiy mode complete
  • the MBS service is the expected MBS service or the MBS service that the terminal device is receiving when the terminal device is in the RRC idle state; before the terminal device enters the RRC connected state, the terminal device sends a message to the network device.
  • Sending an RRC setup request message the network device receives the RRC setup request message sent by the terminal device; the network device sends an RRC setup message to the terminal device, and the terminal device receives the RRC setup message sent by the network device .
  • the MBS service is the expected MBS service or the MBS service being received by the terminal device in the RRC inactive state; before the terminal device enters the RRC connected state, the terminal device sends the The network device sends an RRC recovery request message, and the network device receives the RRC recovery request message sent by the terminal device; wherein the RRC recovery process falls back to the RRC setup process; the network device sends the RRC setup message to the terminal device , the terminal device receives the RRC establishment message sent by the network device.
  • the terminal device sends the identification information of the MBS service to the network device through a first RRC message, and the network device receives the identification information of the MBS service sent by the terminal device through the first RRC message,
  • the first RRC message is an RRC message that has not undergone security processing.
  • the first RRC message is an RRC setup complete message; or, the first RRC message is an MBS Interest Indication (MBSInterestingIndication) message.
  • the terminal device sends the identification information of the MBS service to the network device through a second RRC message
  • the network device receives the identification information of the MBS service sent by the terminal device through the second RRC message
  • the second RRC message is a RRC message that has undergone security processing.
  • the second RRC message is a security activation complete message; alternatively, the second RRC message is a UEAssistanceInformation message; alternatively, the second RRC message is an MBS indication message, such as an MBS interest indication ( MBSInterestingIndication) message.
  • the network device after the terminal device enters the RRC connection state, the network device sends an RRC reconfiguration message to the terminal device, and the terminal device receives the RRC reconfiguration message sent by the network device, and the RRC reconfiguration message
  • the message carries first configuration information, where the first configuration information is used to determine the configuration information of the dedicated downlink BWP.
  • the terminal device After entering the RRC connection state, the terminal device sends the identification information of the MBS service to the network device through an RRC message.
  • the MBS service is the expected MBS service or the MBS service being received by the terminal device in the RRC inactive state; before the terminal device enters the RRC connected state, the terminal device sends the network to the network.
  • the device sends an RRC recovery request message, and the network device receives the RRC recovery request message sent by the terminal device; the network device sends an RRC recovery message to the terminal device, and the terminal device receives the RRC recovery message sent by the network device message, and then, the terminal device enters the RRC connection state.
  • the terminal device After the terminal device enters the RRC connection state, the terminal device sends the identification information of the MBS service to the network device through the RRC recovery complete message, and the network device receives the identification information of the MBS service sent by the terminal device through the RRC recovery complete message. information.
  • the RRC recovery request message is used to determine first indication information, where the first indication information is used to indicate whether the terminal device is receiving the broadcasted MBS service.
  • the first indication information may be implemented in the following ways:
  • the RRC recovery request message carries the first indication information; wherein, the value of the idle bit in the RRC recovery request message is used to represent the first indication information.
  • the RRC recovery request message carries the first indication information; wherein, the value of the recovery cause in the RRC recovery request message is used to represent the first indication information.
  • the value of the logical channel identifier of the CCCH corresponding to the RRC recovery request message is used to represent the first indication information.
  • the logical channel identifier of the CCCH is carried in the header corresponding to the RRC recovery request message in the MAC TB.
  • the RRC recovery message carries second configuration information, and the second configuration information is used to determine the BWP configuration information of the PCell, wherein the bandwidth of the first activated downlink BWP of the PCell includes all the The bandwidth of the initial downlink BWP of the PCell and/or the bandwidth of the MBS BWP of the PCell.
  • the bandwidth of the MBS BWP of the PCell is determined by the network device according to the bandwidth of the MBS BWP corresponding to the MBS service identifier indicated by the terminal device.
  • the bandwidth of the MBS BWP of the PCell is the bandwidth of the MBS BWP corresponding to the MBS service identifier indicated by the terminal device.
  • the network device sends an RRC reconfiguration message to the terminal device, and the terminal device receives the RRC reconfiguration message sent by the network device, so the The RRC reconfiguration message carries first configuration information, where the first configuration information is used to determine the configuration information of the dedicated downlink BWP.
  • the terminal device After entering the RRC connection state, the terminal device sends the identification information of the MBS service to the network device through an RRC message.
  • the MBS service is the expected MBS service or the MBS service being received by the terminal device in the RRC inactive state; before the terminal device enters the RRC connected state, the terminal device sends the network to the network.
  • the device sends an RRC recovery request message, and the network device receives the RRC recovery request message sent by the terminal device; the network device sends an RRC recovery message to the terminal device, and the terminal device receives the RRC recovery message sent by the network device message, and then, the terminal device enters the RRC connection state.
  • the terminal device After the terminal device enters the RRC connection state, the terminal device sends the identification information of the MBS service to the network device through an RRC recovery complete message.
  • the terminal device may send first indication information to the network device, where the first indication information is used to indicate whether the terminal device is receiving the broadcast MBS service.
  • the RRC recovery request message is used to determine first indication information, where the first indication information is used to indicate whether the terminal device is receiving the broadcasted MBS service.
  • the first indication information may be implemented in the following ways:
  • the RRC recovery request message carries the first indication information; wherein, the value of the idle bit in the RRC recovery request message is used to represent the first indication information.
  • the RRC recovery request message carries the first indication information; wherein, the value of the recovery cause in the RRC recovery request message is used to represent the first indication information.
  • the value of the logical channel identifier of the CCCH corresponding to the RRC recovery request message is used to represent the first indication information.
  • the logical channel identifier of the CCCH is carried in the header corresponding to the RRC recovery request message in the MAC TB.
  • the method further includes: the terminal device sends MSG1 or MSGA to the network device, and the network device receives the message.
  • MSG1 or MSGA sent by the terminal device the MSG1 or MSGA is used to determine the first indication information, and the first indication information is used to indicate at least one of the following: whether the terminal device is receiving the broadcast MBS service; The identification information of the MBS service that the terminal device is receiving.
  • the preamble and/or RO resource corresponding to the MSG1 or MSGA have an associated relationship with whether the terminal device is receiving the broadcast MBS service; and/or, the preamble and/or the corresponding preamble of the MSG1 or MSGA
  • the RO resource is associated with the identification information of the MBS service received by the terminal device.
  • the association relationship is configured through a system broadcast message. Based on this, the terminal device determines the preamble and/or RO resource corresponding to the MSG1 or MSGA according to whether the broadcasted MBS service is being received and/or the identification information of the received MBS service.
  • the RRC recovery message carries second configuration information, and the second configuration information is used to determine the BWP configuration information of the PCell, wherein the bandwidth of the first activated downlink BWP of the PCell includes all the The bandwidth of the initial downlink BWP of the PCell and/or the bandwidth of the MBS BWP of the PCell.
  • the bandwidth of the MBS BWP of the PCell is determined by the network device according to the bandwidth of the MBS BWP corresponding to the MBS service identifier indicated by the terminal device.
  • the bandwidth of the MBS BWP of the PCell is the bandwidth of the MBS BWP corresponding to the MBS service identifier indicated by the terminal device.
  • the network device sends an RRC reconfiguration message to the terminal device, and the terminal device receives the RRC reconfiguration message sent by the network device, so the The RRC reconfiguration message carries first configuration information, where the first configuration information is used to determine the configuration information of the dedicated downlink BWP.
  • the terminal device Before the terminal device enters the RRC connection state, it sends the identification information of the MBS service to the network device through MSG1 or MSGA; the network device receives the identification information of the MBS service sent by the terminal device through MSG1 or MSGA.
  • the MSG1 or MSGA is used to determine first indication information, where the first indication information is used to indicate at least one of the following:
  • the preamble and/or RO resource corresponding to the MSG1 or MSGA have an associated relationship with whether the terminal device is receiving the broadcast MBS service; and/or, the preamble and/or the corresponding preamble of the MSG1 or MSGA
  • the RO resource is associated with the identification information of the MBS service received by the terminal device.
  • the association relationship is configured through a system broadcast message. Based on this, the terminal device determines the preamble and/or RO resource corresponding to the MSG1 or MSGA according to whether the broadcasted MBS service is being received and/or the identification information of the received MBS service.
  • the first indication information can be implicitly indicated by the preamble and/or RO resource of MSG1, or the first indication information can also be Carry explicit instructions in the payload.
  • the MBS service is the expected MBS service or the MBS service being received by the terminal device in the RRC inactive state; before the terminal device enters the RRC connected state, the terminal device passes MSG1 or MSGA Send the identification information of the MBS service to the network device, and the terminal device receives the MSG2 sent by the network device; then, the terminal device sends an RRC recovery request message to the network device, and the network device receives the RRC sent by the terminal device.
  • a recovery request message the network device sends an RRC recovery message to the terminal device, and the terminal device receives the RRC recovery message sent by the network device, the RRC recovery message carries first configuration information, and the first configuration information It is used to determine the configuration information of the dedicated downlink BWP; then, the terminal device enters the RRC connection state. After the terminal device enters the RRC connection state, the terminal device sends an RRC recovery complete message to the network device.
  • the network device can obtain the identification information of the MBS service sent by the terminal device, and the network device can configure the dedicated downlink BWP for the terminal device and/or select for the terminal device according to the identification information of the MBS service.
  • the target cell to be handed over.
  • the identification information of the MBS service is used by the network device to select a cell supporting the MBS service indicated by the identification information of the MBS service as the target cell of the handover.
  • a cell supporting the MBS service indicated by the identification information of the MBS service is selected as the target cell for handover.
  • the network device selects the cell supporting the MBS service indicated by the identification information of the MBS service as the target cell for handover, the cell and its neighbors interact with each other about the MBS service supported by each cell. Or the identification information of the MBS service being transmitted.
  • the configuration information of the dedicated downlink BWP is embodied by the first configuration information in the above solution.
  • the first configuration information in the solutions described in the above cases 1 to 4 is described below.
  • the first configuration information is used to determine the configuration information of the dedicated downlink BWP of the PCell, and the bandwidth of the dedicated downlink BWP of the PCell includes the bandwidth of the initial downlink BWP of the PCell and/or all The bandwidth of PCell's MBSBWP.
  • the first configuration information is used to determine the configuration information of the dedicated downlink BWP of the SCell, and the bandwidth of the dedicated downlink BWP of the SCell includes the bandwidth of the initial downlink BWP of the SCell and/or The bandwidth of the MBSBWP of the SCell.
  • the network device sends second indication information to the terminal device, and the terminal device receives the second indication information sent by the network device, where the second indication information is used to indicate that the terminal device is The broadcasted MBS service is received on the SCell.
  • the SCell if the terminal device receives the broadcasted MBS service on the SCell, the SCell is in an active state or in an active state with non-dormancy behavior.
  • the terminal device if the terminal device receives the broadcasted MBS service on the SCell, and the SCell is in a deactivated state or in an activated state with dormancy behavior, the terminal device has the following behavior: The PDCCH scrambled by G-RNTI is monitored on the SCell and the PDSCH corresponding to the PDCCH is received; the PDCCH scrambled by the C-RNTI and the PDSCH corresponding to the PDCCH are not monitored on the SCell. Further, the bandwidth of the first activated downlink BWP of the SCell includes the bandwidth of the initial downlink BWP of the SCell and/or the bandwidth of the MBS BWP of the SCell.
  • MBS service identification information may refer to the identification information of one MBS service or may refer to the identification information of multiple MBS services (ie, the MBS identification information list).
  • the terminal device is a UE as an example
  • the network device is a gNB as an example for description.
  • FIG. 3 is a schematic flowchart 2 of an MBS service indication method provided by an embodiment of the present application.
  • the MBS service indication method includes the following step:
  • Step 301 The UE is in the RRC idle state and is receiving the broadcasted MBS service.
  • the identification information of the broadcasted MBS service is TMGI-1.
  • Step 302 The UE sends an RRC setup request (RRCSetupRequest) message to the gNB.
  • RRCSetupRequest RRC setup request
  • the UE sends an RRC setup request message to the gNB through SRB0.
  • Step 303 The gNB sends an RRC setup (RRCSetup) message to the UE.
  • the gNB sends an RRC setup message to the UE through SRB1.
  • Step 304 The UE enters the RRC connected state.
  • Step 305 The UE reports to the gNB the identification information of the MBS service that the UE is interested in or is receiving.
  • the identification information of the MBS service that the UE is interested in or is receiving is, for example, TMGI-1.
  • the identification information of the MBS service that the UE is interested in or is receiving is not limited to a TMGI, but may also be a TMGI list.
  • the UE reports the identification information of the MBS service that the UE is interested in or is receiving to the gNB, in the following ways:
  • Manner 1-1 The UE reports, through an RRC setup complete (RRCSetupComplete) message, the identification information of the MBS service that the UE is interested in or is receiving.
  • RRC setup complete ie MSG5
  • SRB1 SRB1
  • Manner 1-2 The UE reports, through a new RRC message, the identification information of the MBS service that the UE is interested in or is receiving.
  • the new RRC message is, for example, an MBS Interest Indication (MBSInterestingIndication) message.
  • MBSInterestingIndication MBS Interest Indication
  • the above methods 1-1 and 1-2 do not consider security, that is, the RRC message carrying the identification information of the MBS service has not been processed securely, so the above method 1 can be used when there is no security problem. -1 or mode 1-2 to report the identification information of the MBS service.
  • Manner 2-1 The UE reports, through a security activation complete (SecurityModeComplete) message, the identification information of the MBS service that the UE is interested in or is receiving.
  • SecurityModeComplete security activation complete
  • Manner 2-2 The UE reports the identification information of the MBS service that the UE is interested in or is receiving through a UE Assistance Information (UEAssistanceInformation) message.
  • UEAssistanceInformation UE Assistance Information
  • Manner 2-3 The UE reports, through a new RRC message, the identification information of the MBS service that the UE is interested in or is receiving.
  • the new RRC message is, for example, an MBS Interest Indication (MBSInterestingIndication) message.
  • MBSInterestingIndication MBS Interest Indication
  • the above methods 2-1, 2-2 and 2-3 have taken security considerations, that is, the RRC message carrying the identification information of the MBS service is securely processed (that is, it is reported after the AS layer security is activated). RRC message), therefore, the above-mentioned mode 2-1 or mode 2-2 or mode 2-3 can be used to report the identification information of the MBS service if there is no security problem or there is a security problem.
  • Step 306 The gNB sends an RRC reconfiguration (RRCReconfiguration) message to the UE, which carries the configuration information of the dedicated downlink BWP.
  • RRC reconfiguration RRCReconfiguration
  • the gNB configures the configuration information of the dedicated downlink BWP through the RRC reconfiguration message, specifically:
  • the bandwidth of the dedicated DL BWP includes the bandwidth of the initial DL BWP of the PCell and/or the bandwidth of the MBS BWP of the PCell.
  • the gNB may instruct the UE to receive the MBS service on a certain SCell, and configure the bandwidth of the dedicated DL BWP of the SCell to include the bandwidth of the initial DL BWP of the SCell and/or the bandwidth of the MBS BWP of the SCell.
  • the UE receives the broadcast MBS service on the SCell, the SCell cannot be deactivated, and the dormant BWP cannot be configured (that is, the SCell cannot be in an active state with dormant behavior).
  • the UE receives the broadcast MBS service on the SCell, if the SCell is deactivated, or the dormant BWP is configured and the dormant BWP is activated, the UE is only allowed to continue to monitor the G-RNTI scrambled PDCCH and the corresponding PDSCH reception, but not C-RNTI scrambled PDCCH and corresponding PDSCH reception.
  • the bandwidth of the first activated DL BWP of the SCell must include the bandwidth of the initial DL BWP of the SCell and/or the bandwidth of the MBS BWP of the SCell.
  • Step 307 The UE sends an RRC reconfiguration complete (RRCReconfigurationComplete) message to the gNB.
  • the UE sends an RRC reconfiguration complete message to the gNB through SRB1.
  • FIG. 4 is a schematic flow chart 3 of an MBS service indication method provided by an embodiment of the present application.
  • the MBS service indication method includes the following step:
  • Step 401 The UE is in the RRC inactive state, and the UE is receiving the broadcast MBS service.
  • the identifier of the broadcasted MBS service is TMGI-1.
  • Step 402 The UE sends an RRC resume request (RRCResumeRequest) message to the target gNB, and the 1-bit indication information is used to indicate whether the UE is receiving the MBS service.
  • RRC resume request RRCResumeRequest
  • the UE sends an RRC recovery request message to the target gNB through SRB0.
  • the RRC recovery request message is used to determine 1-bit indication information
  • the 1-bit indication information is used to indicate whether the UE is receiving the MBS service.
  • a value of 1 for the 1-bit indication information means that the UE is receiving an MBS service
  • a value of 0 for the 1-bit indication information means that the UE is not receiving an MBS service.
  • the UE carries 1-bit indication information in the RRC recovery request message, for example, the 1-bit indication information is indicated by a spare bit (spare bit) in the RRC recovery request message.
  • the UE indicates that the UE is receiving the broadcasted MBS service through the LCID of the CCCH corresponding to the RRC recovery request message.
  • a new LCID is defined for the CCCH to indicate that the UE is receiving the broadcasted MBS service when the UE initiates the RRC connection recovery.
  • the LCID indicated in the corresponding header of the RLC PDU of the RRC recovery request message in the MAC TB is the above-mentioned newly defined LCID.
  • the UE carries 1-bit indication information in the RRC resume request message, for example, the value of the resume cause (resume case) in the RRC resume request message is used to indicate that the UE is receiving the broadcast MBS service.
  • Step 403 The target gNB sends an RRC recovery message to the UE, which carries the configuration information of the BWP of the PCell.
  • the target gNB sends an RRC recovery message to the UE through SRB1.
  • the target gNB After the target gNB obtains the 1-bit indication information about the MBS service that the UE is receiving from the RRC recovery request message sent by the UE, it configures the BWP of the PCell for the UE through the RRC recovery (RRCResume) message.
  • the bandwidth of an activated DL BWP includes the bandwidth of the PCell's initial DL BWP and/or the bandwidth of the PCell's MBS BWP.
  • the network side will not trigger the UE to perform a BWP handover operation, at least for PCell, before receiving the 1-bit indication information of the MBS service that the UE is interested in or is receiving.
  • Step 404 The UE enters the RRC connected state.
  • Step 405 The UE reports the identification information of the MBS service that the UE is interested in or is receiving through an RRC recovery complete (RRCResumeComplete) message.
  • RRCResumeComplete RRC recovery complete
  • the UE sends an RRC recovery complete message through SRB1.
  • Step 406 The gNB sends an RRC reconfiguration (RRCReconfiguration) message to the UE, which carries the configuration information of the dedicated downlink BWP.
  • RRC reconfiguration RRCReconfiguration
  • the gNB sends an RRC reconfiguration message to the UE through SRB1.
  • the gNB configures the configuration information of the dedicated downlink BWP through the RRC reconfiguration message, specifically:
  • the bandwidth of the dedicated DL BWP includes the bandwidth of the initial DL BWP of the PCell and/or the bandwidth of the MBS BWP of the PCell.
  • the gNB may instruct the UE to receive the MBS service on a certain SCell, and configure the bandwidth of the dedicated DL BWP of the SCell to include the bandwidth of the initial DL BWP of the SCell and/or the bandwidth of the MBS BWP of the SCell.
  • the UE receives the broadcast MBS service on the SCell, the SCell cannot be deactivated, and the dormant BWP cannot be configured (that is, the SCell cannot be in an active state with dormant behavior).
  • the UE receives the broadcast MBS service on the SCell, if the SCell is deactivated, or the dormant BWP is configured and the dormant BWP is activated, the UE is only allowed to continue to monitor the G-RNTI scrambled PDCCH and the corresponding PDSCH reception, but not C-RNTI scrambled PDCCH and corresponding PDSCH reception.
  • the bandwidth of the first activated DL BWP of the SCell must include the bandwidth of the initial DL BWP of the SCell and/or the bandwidth of the MBS BWP of the SCell.
  • Step 407 The UE sends an RRC reconfiguration complete (RRCReconfigurationComplete) message to the gNB.
  • the UE sends an RRC reconfiguration complete message to the gNB through SRB1.
  • FIG. 5 is a schematic flowchart of the MBS service indication method provided by the embodiment of the present application. As shown in FIG. 5 , the MBS service indication method includes the following step:
  • Step 501 The UE is in the RRC inactive state, and the UE is receiving the broadcast MBS service.
  • the identifier of the broadcasted MBS service is TMGI-1.
  • Step 502 The UE receives the system broadcast message sent by the target gNB, and configures the first association relationship and/or the second association relationship.
  • association relationship may also be referred to as a “mapping relationship”.
  • the first association relationship is the association relationship between preamble and/or RO (rach occasion) resources and whether the MBS service is in progress.
  • the second association relationship is the association relationship between the preamble and/or RO (rach occasion) resource and the MBS service identifier (that is, the identification information of the MBS service).
  • Step 503 The UE sends MSG1 to the target gNB.
  • the UE selects the corresponding preamble and/or RO resource to send MSG1 according to whether it is currently receiving the MBS service and/or the identification information of the received MBS service.
  • Step 504 The target gNB determines, according to the preamble and/or RO resource of MSG1, whether the UE is receiving the MBS service and/or the identification information of the MBS service being received.
  • Step 505 The target gNB sends MSG2 to the UE.
  • Step 506 The UE sends an RRC resume request (RRCResumeRequest) message to the target gNB.
  • the UE sends an RRC recovery request message to the target gNB through SRB0.
  • Step 507 The target gNB sends an RRC recovery message to the UE, which carries the configuration information of the BWP of the PCell.
  • the target gNB sends an RRC recovery message to the UE through SRB1.
  • the target gNB After the target gNB obtains the 1-bit indication information about the MBS service that the UE is receiving from the RRC recovery request message sent by the UE, it configures the BWP of the PCell for the UE through the RRC recovery (RRCResume) message.
  • the bandwidth of an activated DL BWP includes the bandwidth of the PCell's initial DL BWP and/or the bandwidth of the PCell's MBS BWP.
  • the network side will not trigger the UE to perform a BWP handover operation, at least for PCell, before receiving the 1-bit indication information of the MBS service that the UE is interested in or is receiving.
  • Step 508 The UE enters the RRC connected state.
  • Step 509 The UE reports the identification information of the MBS service that the UE is interested in or is receiving through an RRC recovery complete (RRCResumeComplete) message.
  • RRCResumeComplete RRC recovery complete
  • the UE sends an RRC recovery complete message through SRB1.
  • Step 510 The gNB sends an RRC reconfiguration (RRCReconfiguration) message to the UE, which carries the configuration information of the dedicated downlink BWP.
  • RRC reconfiguration RRCReconfiguration
  • the gNB sends an RRC reconfiguration message to the UE through SRB1.
  • the gNB configures the configuration information of the dedicated downlink BWP through the RRC reconfiguration message, specifically:
  • the bandwidth of the dedicated DL BWP includes the bandwidth of the initial DL BWP of the PCell and/or the bandwidth of the MBS BWP of the PCell.
  • the gNB may instruct the UE to receive the MBS service on a certain SCell, and configure the bandwidth of the dedicated DL BWP of the SCell to include the bandwidth of the initial DL BWP of the SCell and/or the bandwidth of the MBS BWP of the SCell.
  • the UE receives the broadcast MBS service on the SCell, the SCell cannot be deactivated, and the dormant BWP cannot be configured (that is, the SCell cannot be in an active state with dormant behavior).
  • the UE receives the broadcast MBS service on the SCell, if the SCell is deactivated, or the dormant BWP is configured and the dormant BWP is activated, the UE is only allowed to continue to monitor the G-RNTI scrambled PDCCH and the corresponding PDSCH reception, but not C-RNTI scrambled PDCCH and corresponding PDSCH reception.
  • the bandwidth of the first activated DL BWP of the SCell must include the bandwidth of the initial DL BWP of the SCell and/or the bandwidth of the MBS BWP of the SCell.
  • Step 511 The UE sends an RRC reconfiguration complete (RRCReconfigurationComplete) message to the gNB.
  • the UE sends an RRC reconfiguration complete message to the gNB through SRB1.
  • FIG. 6 is a schematic flowchart of the MBS service indication method provided by the embodiment of the present application. As shown in FIG. 6 , the MBS service indication method includes the following step:
  • Step 601 The UE is in the RRC inactive state, and the UE is receiving the broadcasted MBS service.
  • the identifier of the broadcasted MBS service is TMGI-1.
  • Step 602 The UE receives the system broadcast message sent by the target gNB, and configures the first association relationship and/or the second association relationship.
  • association relationship may also be referred to as a “mapping relationship”.
  • the first association relationship is the association relationship between preamble and/or RO (rach occasion) resources and whether the MBS service is in progress.
  • the second association relationship is the association relationship between the preamble and/or RO (rach occasion) resource and the MBS service identifier (that is, the identification information of the MBS service).
  • Step 603 The UE sends MSG1 to the target gNB.
  • the UE selects the corresponding preamble and/or RO resource to send MSG1 according to whether it is currently receiving the MBS service and/or the identification information of the received MBS service.
  • Step 604 The target gNB determines, according to the preamble and/or RO resource of MSG1, whether the UE is receiving the MBS service and/or the identification information of the MBS service being received.
  • Step 605 The target gNB sends MSG2 to the UE.
  • Step 606 The UE sends an RRC resume request (RRCResumeRequest) message to the target gNB.
  • the UE sends an RRC recovery request message to the target gNB through SRB0.
  • Step 607 The target gNB sends an RRC recovery message to the UE, which carries the configuration information of the dedicated downlink BWP.
  • the target gNB sends an RRC recovery message to the UE through SRB1.
  • the gNB configures the configuration information of the dedicated downlink BWP through the RRC recovery message, specifically:
  • the bandwidth of the dedicated DL BWP includes the bandwidth of the initial DL BWP of the PCell and/or the bandwidth of the MBS BWP of the PCell.
  • the gNB may instruct the UE to receive the MBS service on a certain SCell, and configure the bandwidth of the dedicated DL BWP of the SCell to include the bandwidth of the initial DL BWP of the SCell and/or the bandwidth of the MBS BWP of the SCell.
  • the UE receives the broadcast MBS service on the SCell, the SCell cannot be deactivated, and the dormant BWP cannot be configured (that is, the SCell cannot be in an active state with dormant behavior).
  • the UE receives the broadcast MBS service on the SCell, if the SCell is deactivated, or the dormant BWP is configured and the dormant BWP is activated, the UE is only allowed to continue to monitor the G-RNTI scrambled PDCCH and the corresponding PDCCH in the cell. PDSCH reception, but not C-RNTI scrambled PDCCH and corresponding PDSCH reception.
  • the bandwidth of the first activated DL BWP of the SCell must include the bandwidth of the initial DL BWP of the SCell and/or the bandwidth of the MBS BWP of the SCell.
  • Step 608 The UE enters the RRC connected state.
  • Step 609 The UE sends an RRC recovery complete (RRCResumeComplete) message.
  • the UE sends an RRC recovery complete message through SRB1.
  • Step 610 The gNB sends an RRC reconfiguration (RRCReconfiguration) message to the UE,
  • Step 611 The UE sends an RRC reconfiguration complete (RRCReconfigurationComplete) message to the gNB.
  • the UE sends an RRC reconfiguration complete message to the gNB through SRB1.
  • FIG. 7 is a schematic diagram 1 of the structure and composition of an indication apparatus for an MBS service provided by an embodiment of the present application, which is applied to a terminal device.
  • the indication apparatus for an MBS service includes:
  • a communication unit 701 configured to send identification information of an MBS service to a network device, where the MBS service is an MBS service expected by the terminal device or an MBS service being received;
  • the identification information of the MBS service is used for the configuration of the dedicated downlink BWP of the terminal device and/or the identification information of the MBS service is used to determine the target cell to be handed over by the terminal device.
  • the communication unit 701 is configured to send the identification information of the MBS service to the network device through a first RRC message, where the first RRC message is an RRC message that has not undergone security processing.
  • the first RRC message is an RRC setup complete message
  • the first RRC message is an MBS indication message.
  • the communication unit 701 is configured to send the identification information of the MBS service to the network device through a second RRC message, where the second RRC message is a securely processed RRC message.
  • the second RRC message is a security activation complete message
  • the second RRC message is a UEAssistanceInformation message
  • the second RRC message is an MBS indication message.
  • the MBS service is a desired MBS service or an MBS service being received by the terminal device in an RRC idle state;
  • the communication unit 701 is further configured to send an RRC establishment request message to the network device; and receive an RRC establishment message sent by the network device.
  • the MBS service is a desired MBS service or an MBS service that is being received by the terminal device in an RRC inactive state;
  • the communication unit 701 is further configured to send an RRC recovery request message to the network device; wherein, the RRC recovery process falls back to the RRC establishment process; and receives the RRC establishment message sent by the network device.
  • the communication unit 701 is configured to send the identification information of the MBS service to the network device through an RRC recovery complete message.
  • the communication unit 701 is further configured to send an RRC recovery request message to the network device; and receive an RRC recovery message sent by the network device.
  • the RRC recovery request message is used to determine first indication information, where the first indication information is used to indicate whether the terminal device is receiving the broadcasted MBS service.
  • the RRC recovery request message carries the first indication information
  • the value of the idle bit in the RRC recovery request message is used to represent the first indication information; or,
  • the value of the recovery cause in the RRC recovery request message is used to represent the first indication information.
  • the value of the logical channel identifier of the CCCH corresponding to the RRC recovery request message is used to represent the first indication information.
  • the logical channel identifier of the CCCH is carried in the header corresponding to the RRC recovery request message in the MAC TB.
  • the communication unit 701 is further configured to send MSG1 or MSGA to the network device, where the MSG1 or MSGA is used to determine first indication information, and the first indication information is used to indicate at least the following: one:
  • the RRC recovery message carries second configuration information, and the second configuration information is used to determine the BWP configuration information of the PCell, wherein the bandwidth of the first activated downlink BWP of the PCell includes the The bandwidth of the initial downlink BWP of the PCell and/or the bandwidth of the MBS BWP of the PCell.
  • the bandwidth of the MBS BWP of the PCell is determined by the network device according to the bandwidth of the MBS BWP corresponding to the MBS service identifier indicated by the terminal device.
  • the communication unit 701 is further configured to receive an RRC reconfiguration message sent by the network device, where the RRC reconfiguration message carries first configuration information, and the first configuration information is used to determine the The configuration information of the dedicated downlink BWP described above.
  • the communication unit 701 is configured to send the identification information of the MBS service to the network device through MSG1 or MSGA.
  • the MSG1 or MSGA is used to determine first indication information, where the first indication information is used to indicate at least one of the following:
  • the communication unit 701 is further configured to send an RRC recovery request message to the network device; and receive an RRC recovery message sent by the network device, where the RRC recovery message carries the first configuration information, and the The first configuration information is used to determine the configuration information of the dedicated downlink BWP.
  • the preamble and/or RO resource corresponding to the MSG1 or MSGA has an associated relationship with whether the terminal device is receiving the broadcast MBS service; and/or,
  • the preamble and/or RO resource corresponding to the MSG1 or MSGA has an associated relationship with the identification information of the MBS service received by the terminal device.
  • the association relationship is configured through a system broadcast message.
  • the device further includes:
  • the determining unit 702 is configured to determine the preamble and/or RO resource corresponding to the MSG1 or MSGA according to whether the broadcasted MBS service is being received and/or the identification information of the received MBS service.
  • the first configuration information is used to determine the configuration information of the dedicated downlink BWP of the PCell, and the bandwidth of the dedicated downlink BWP of the PCell includes the bandwidth of the initial downlink BWP of the PCell and/or the PCell The bandwidth of the MBS BWP.
  • the first configuration information is used to determine the configuration information of the dedicated downlink BWP of the SCell, and the bandwidth of the dedicated downlink BWP of the SCell includes the bandwidth of the initial downlink BWP of the SCell and/or the bandwidth of the SCell The bandwidth of the MBS BWP.
  • the communication unit 701 is further configured to receive second indication information sent by the network device, where the second indication information is used to instruct the terminal device to receive broadcast MBS on the SCell business.
  • the SCell is in an active state or an active state with non-dormancy behavior.
  • the terminal device receives the broadcasted MBS service on the SCell, and the SCell is in a deactivated state or in an activated state with dormancy behavior, the terminal device has the following behavior:
  • the SCell does not monitor the PDCCH scrambled by the C-RNTI and does not receive the PDSCH corresponding to the PDCCH.
  • the bandwidth of the first activated downlink BWP of the SCell includes the bandwidth of the initial downlink BWP of the SCell and/or the bandwidth of the MBS BWP of the SCell.
  • the identification information of the MBS service is used by the network device to select the target cell to be handed over for the terminal device, including:
  • the identification information of the MBS service is used by the network device to select a cell supporting the MBS service indicated by the identification information of the MBS service as a target cell for handover.
  • the network device selects a cell supporting the MBS service indicated by the identification information of the MBS service as the target cell for handover, the cell and its neighbors interact with each other about the MBS supported by each cell. Identification information of the service or the MBS service being transmitted.
  • FIG. 8 is a schematic diagram 2 of the structure and composition of a device for indicating an MBS service provided by an embodiment of the present application, which is applied to a network device.
  • the device for indicating an MBS service includes:
  • a communication unit 801 configured to receive identification information of an MBS service sent by a terminal device, where the MBS service is an MBS service expected by the terminal device or an MBS service being received;
  • the identification information of the MBS service is used by the network device to configure a dedicated downlink BWP for the terminal device and/or the identification information of the MBS service is used by the network device to select the target to be handed over for the terminal device community.
  • the communication unit 801 is configured to receive the identification information of the MBS service sent by the terminal device through a first RRC message, where the first RRC message is an RRC message that has not undergone security processing.
  • the first RRC message is an RRC setup complete message
  • the first RRC message is an MBS indication message.
  • the communication unit 801 is configured to receive the identification information of the MBS service sent by the terminal device through a second RRC message, where the second RRC message is an RRC message that has undergone security processing.
  • the second RRC message is a security activation complete message
  • the second RRC message is a UEAssistanceInformation message
  • the second RRC message is an MBS indication message.
  • the MBS service is a desired MBS service or an MBS service being received by the terminal device in an RRC idle state;
  • the communication unit 801 is further configured to receive an RRC establishment request message sent by the terminal device; and send an RRC establishment message to the terminal device.
  • the MBS service is the expected MBS service or the MBS service being received by the terminal device in the RRC inactive state; the communication unit 801 is further configured to receive the data sent by the terminal device.
  • RRC recovery request message wherein, the RRC recovery process falls back to the RRC setup process; and the RRC setup message is sent to the terminal device.
  • the communication unit 801 is configured to receive the identification information of the MBS service sent by the terminal device through the RRC recovery complete message.
  • the communication unit 801 is further configured to receive an RRC recovery request message sent by the terminal device; and send an RRC recovery message to the terminal device.
  • the RRC recovery request message is used to determine first indication information, where the first indication information is used to indicate whether the terminal device is receiving the broadcasted MBS service.
  • the RRC recovery request message carries the first indication information
  • the value of the idle bit in the RRC recovery request message is used to represent the first indication information; or,
  • the value of the recovery cause in the RRC recovery request message is used to represent the first indication information.
  • the value of the logical channel identifier of the CCCH corresponding to the RRC recovery request message is used to represent the first indication information.
  • the logical channel identifier of the CCCH is carried in the header corresponding to the RRC recovery request message in the MAC TB.
  • the communication unit 801 is further configured to receive MSG1 or MSGA sent by the terminal device, where the MSG1 or MSGA is used to determine first indication information, and the first indication information is used to indicate At least one of the following:
  • the RRC recovery message carries second configuration information, and the second configuration information is used to determine the BWP configuration information of the PCell, wherein the bandwidth of the first activated downlink BWP of the PCell includes the The bandwidth of the initial downlink BWP of the PCell and/or the bandwidth of the MBS BWP of the PCell.
  • the bandwidth of the MBS BWP of the PCell is determined by the network device according to the bandwidth of the MBS BWP corresponding to the MBS service identifier indicated by the terminal device.
  • the communication unit 801 is further configured to send an RRC reconfiguration message to the terminal device, where the RRC reconfiguration message carries first configuration information, and the first configuration information is used to determine the Configuration information of the dedicated downlink BWP.
  • the communication unit 801 is configured to receive the identification information of the MBS service sent by the terminal device through MSG1 or MSGA.
  • the MSG1 or MSGA is used to determine first indication information, where the first indication information is used to indicate at least one of the following:
  • the communication unit 801 is further configured to receive an RRC recovery request message sent by the terminal device; and send an RRC recovery message to the terminal device, where the RRC recovery message carries the first configuration information, and the The first configuration information is used to determine the configuration information of the dedicated downlink BWP.
  • the preamble and/or RO resource corresponding to the MSG1 or MSGA has an associated relationship with whether the terminal device is receiving the broadcast MBS service; and/or,
  • the preamble and/or RO resource corresponding to the MSG1 or MSGA has an associated relationship with the identification information of the MBS service received by the terminal device.
  • the association relationship is configured through a system broadcast message.
  • the first configuration information is used to determine the configuration information of the dedicated downlink BWP of the PCell, and the bandwidth of the dedicated downlink BWP of the PCell includes the bandwidth of the initial downlink BWP of the PCell and/or the PCell The bandwidth of the MBS BWP.
  • the first configuration information is used to determine the configuration information of the dedicated downlink BWP of the SCell, and the bandwidth of the dedicated downlink BWP of the SCell includes the bandwidth of the initial downlink BWP of the SCell and/or the bandwidth of the SCell The bandwidth of the MBS BWP.
  • the communication unit 801 is further configured to send second indication information to the terminal device, where the second indication information is used to instruct the terminal device to receive the broadcasted MBS service on the SCell .
  • the SCell is in an active state or an active state with non-dormancy behavior.
  • the terminal device receives the broadcast MBS service on the SCell, and the SCell is in a deactivated state or is in an activated state with dormancy behavior, the terminal device has the following behavior:
  • the SCell does not monitor the PDCCH scrambled by the C-RNTI and does not receive the PDSCH corresponding to the PDCCH.
  • the bandwidth of the first activated downlink BWP of the SCell includes the bandwidth of the initial downlink BWP of the SCell and/or the bandwidth of the MBS BWP of the SCell.
  • the device further includes:
  • the selecting unit 802 is configured to select, according to the identification information of the MBS service, a cell supporting the MBS service indicated by the identification information of the MBS service as a target cell for handover.
  • the network device selects a cell supporting the MBS service indicated by the identification information of the MBS service as the target cell for handover, the cell and its neighbors interact with each other about the MBS supported by each cell. Identification information of the service or the MBS service being transmitted.
  • FIG. 9 is a schematic structural diagram of a communication device 900 provided by an embodiment of the present application.
  • the communication device may be a terminal device or a network device.
  • the communication device 900 shown in FIG. 9 includes a processor 910, and the processor 910 can call and run a computer program from a memory to implement the methods in the embodiments of the present application.
  • the communication device 900 may further include a memory 920 .
  • the processor 910 may call and run a computer program from the memory 920 to implement the methods in the embodiments 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 communication device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by a device.
  • the transceiver 930 may include a transmitter and a receiver.
  • the transceiver 930 may further include antennas, and the number of the antennas may be one or more.
  • the communication device 900 may specifically be a network device in this embodiment of the present application, and the communication device 900 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For brevity, details are not repeated here. .
  • the communication device 900 may specifically be the mobile terminal/terminal device in the embodiments of the present application, and the communication device 900 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method in the embodiments of the present application. , and will not be repeated here.
  • FIG. 10 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 1000 shown in FIG. 10 includes a processor 1010, and the processor 1010 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
  • the chip 1000 may further include a memory 1020 .
  • the processor 1010 may call and run a computer program from the memory 1020, so as to implement the methods in the embodiments of the present application.
  • the memory 1020 may be a separate device independent of the processor 1010, or may be integrated in the processor 1010.
  • the chip 1000 may further include an input interface 1030 .
  • the processor 1010 can control the input interface 1030 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip 1000 may further include an output interface 1040 .
  • the processor 1010 can control the output interface 1040 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 processes implemented by the network device in each method of the embodiment of the present application, which is not repeated here for brevity.
  • the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application.
  • the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application.
  • the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application.
  • the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.
  • FIG. 11 is a schematic block diagram of a communication system 1100 provided by an embodiment of the present application. As shown in FIG. 11 , the communication system 1100 includes a terminal device 1110 and a network device 1120 .
  • the terminal device 1110 can be used to implement the corresponding functions implemented by the terminal device in the above method
  • the network device 1120 can be used to implement the corresponding functions implemented by the network device in the above method. For brevity, details are not repeated here. .
  • the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Programming logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.
  • 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 this embodiment 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 may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be Random Access Memory (RAM), which acts as an external cache.
  • RAM random access memory
  • SRAM Static RAM
  • DRAM Dynamic RAM
  • SDRAM Synchronous DRAM
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • enhanced SDRAM ESDRAM
  • synchronous link dynamic random access memory Synchlink DRAM, SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a 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, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.
  • Embodiments of the present application further provide a computer-readable storage medium for storing a computer program.
  • the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application.
  • the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. , and are not repeated here for brevity.
  • 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 embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. Repeat.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, For brevity, details are not repeated here.
  • the embodiments of the present application also provide a computer program.
  • the computer program can be applied to the network device in the embodiments of the present application.
  • the computer program runs on the computer, the computer executes the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity. , and will not be repeated here.
  • the computer program may be applied to the mobile terminal/terminal device in the embodiments of the present application, and when the computer program is run on the computer, the mobile terminal/terminal device implements the various methods of the computer program in the embodiments of the present application.
  • the corresponding process for the sake of brevity, will not be repeated here.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of 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 components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution, and the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: 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 codes .

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  • Mobile Radio Communication Systems (AREA)

Abstract

Des modes de réalisation de la présente demande concernent un appareil et un procédé d'indication service de diffusion/multidiffusion (MBS), un dispositif terminal, et un dispositif de réseau, ledit procédé comprenant les étapes suivantes : un dispositif terminal envoie des informations d'identification d'un service MBS à un dispositif de réseau, ledit service MBS étant un service MBS attendu, ou un service MBS actuellement reçu, par ledit dispositif terminal ; lesdites informations d'identification du service MBS étant utilisées pour la configuration d'une partie de bande passante de liaison descendante (BWP) dédiée du dispositif terminal et/ou les informations d'identification du service MBS sont utilisées pour déterminer un transfert intercellulaire en attente de cellule cible du dispositif terminal.
PCT/CN2020/138911 2020-12-24 2020-12-24 Procédé et appareil d'indication de service mbs, dispositif terminal et dispositif de réseau WO2022133877A1 (fr)

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PCT/CN2020/138911 WO2022133877A1 (fr) 2020-12-24 2020-12-24 Procédé et appareil d'indication de service mbs, dispositif terminal et dispositif de réseau
CN202080105637.0A CN116250259A (zh) 2020-12-24 2020-12-24 一种mbs业务的指示方法及装置、终端设备、网络设备

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