WO2022236618A1 - 侧行链路通信方法、设备及存储介质 - Google Patents

侧行链路通信方法、设备及存储介质 Download PDF

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Publication number
WO2022236618A1
WO2022236618A1 PCT/CN2021/092869 CN2021092869W WO2022236618A1 WO 2022236618 A1 WO2022236618 A1 WO 2022236618A1 CN 2021092869 W CN2021092869 W CN 2021092869W WO 2022236618 A1 WO2022236618 A1 WO 2022236618A1
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WIPO (PCT)
Prior art keywords
information
terminal
types
blocks
system information
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PCT/CN2021/092869
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English (en)
French (fr)
Inventor
冷冰雪
卢前溪
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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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 CN202180091157.8A priority Critical patent/CN116746177A/zh
Priority to PCT/CN2021/092869 priority patent/WO2022236618A1/zh
Publication of WO2022236618A1 publication Critical patent/WO2022236618A1/zh
Priority to US18/463,428 priority patent/US20230422151A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/40Resource management for direct mode communication, e.g. D2D or sidelink
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/25Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink

Definitions

  • the embodiments of the present application relate to communication technologies, and in particular, to a sidelink communication method, device, and storage medium.
  • user equipment In the communication field, user equipment (user equipment, UE) can not only communicate through the cellular communication interface, namely the user equipment-universal mobile communication system terrestrial access network (UE-UTRAN, Uu) interface, but also through the direct communication interface, namely A proximity-based service communication (interface) 5 (proximity-based service communication (interface) 5, PC5) interface directly performs communication between user equipments.
  • UE-UTRAN user equipment-universal mobile communication system terrestrial access network
  • PC5 proximity-based service communication
  • an indirect communication method (also called a relay communication method) can also be used, which can be established by the established PC5
  • the interface connection and the UE that establishes the Uu interface connection act as a relay device to transfer data between the remote UE and the network.
  • the current indirect communication methods have yet to be perfected.
  • Embodiments of the present application provide a sidelink communication method, device, and storage medium, so that a remote UE that relays communication can obtain system information as required.
  • the embodiment of the present application may provide a sidelink communication method, the method including:
  • the first terminal receives first information from the second terminal, where the first information is used to request N types of system information blocks, where N is a positive integer;
  • the first terminal sends second information to the second terminal, where the second information is used to indicate at least one of the N types of system information blocks.
  • the embodiment of the present application may further provide a sidelink communication method, the method including:
  • the second terminal sends first information to the first terminal, where the first information is used to request N types of system information blocks, where N is a positive integer;
  • the second terminal receives second information from the first terminal, where the second information includes at least one of the N types of system information blocks.
  • the embodiment of the present application may also provide a communication device, the communication device is configured in the first terminal, including:
  • a transceiver unit configured to receive first information from the second terminal, where the first information is used to request N types of system message blocks, where N is a positive integer;
  • a processing unit configured to determine second information, where the second information is used to indicate at least one of the N types of system information blocks;
  • the transceiving unit is further configured to send second information to the second terminal.
  • the embodiment of the present application may further provide a communication device configured on a second terminal device, including:
  • a processing unit configured to determine the required N types of system message blocks
  • a transceiver unit configured to send first information to the first terminal, where the first information is used to request the N types of system message blocks, where N is a positive integer;
  • the transceiving unit is further configured to receive second information sent from the first terminal, where the second information includes at least one of the N types of system information blocks.
  • the embodiment of the present application may further provide a terminal device, including:
  • processors memory, interfaces for communicating with network devices
  • the memory stores computer-executable instructions
  • the processor executes the computer-executed instructions stored in the memory, so that the processor executes the sidelink communication method provided in any one of the first aspect or the second aspect.
  • the embodiment of the present application provides a computer-readable storage medium.
  • the computer-readable storage medium stores computer-executable instructions, which are used to implement the first aspect or the second aspect when the computer-executable instructions are executed by a processor. Any of the sidelink communication methods.
  • the embodiment of the present application provides a program, which is used to execute the sidelink communication method in any one of the first aspect or the second aspect when the program is executed by a processor.
  • the above-mentioned processor may be a chip.
  • the embodiment of the present application provides a computer program product, including program instructions, and the program instructions are used to implement the sidelink communication method in any one of the first aspect or the second aspect.
  • the embodiment of the present application provides a chip, including: a processing module and a communication interface, where the processing module can execute the sidelink communication method in any one of the first aspect or the second aspect.
  • the chip also includes a storage module (such as a memory), the storage module is used to store instructions, and the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to perform the first aspect Or the sidelink communication method of any one of the second aspect.
  • a storage module such as a memory
  • the storage module is used to store instructions
  • the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to perform the first aspect Or the sidelink communication method of any one of the second aspect.
  • Fig. 1 is a schematic diagram of a communication system applicable to the present application
  • Fig. 2 is another schematic diagram of a communication system applicable to the present application.
  • FIG. 3 is a schematic flowchart of the connection establishment process between the remote UE and the relay UE provided by the present application;
  • FIG. 4 is a schematic flowchart of a sidelink communication method provided by the present application.
  • FIG. 5 is another schematic flowchart of the sidelink communication method provided by the present application.
  • FIG. 6 is another schematic flowchart of the sidelink communication method provided by the present application.
  • FIG. 7 is another schematic flowchart of the sidelink communication method provided by the present application.
  • FIG. 8 is a schematic diagram of a communication device provided by the present application.
  • FIG. 9 is a schematic structural diagram of a communication device provided in the present application.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile telecommunications system
  • WiMAX worldwide interoperability for microwave access
  • 5G fifth generation
  • 5G new wireless
  • NR new radio
  • the terminal equipment in the embodiment of the present application may be referred to as a terminal or user equipment (UE), and the terminal equipment may be an access terminal, a subscriber unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, or a mobile device.
  • UE terminal or user equipment
  • the terminal equipment may be an access terminal, a subscriber unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, or a mobile device.
  • user terminal, terminal device wireless communication device, user agent or user device.
  • the terminal device may also 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 Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminals in the future evolution of public land mobile networks (public land mobile network, PLMN) equipment, etc., which are not limited in this embodiment of the present application.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction.
  • the terminal device may also be a terminal device in an Internet of Vehicles system or an Internet of Things (Internet of Things, IoT) system.
  • IoT Internet of Things
  • the network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may be a base station (base transceiver station, BTS) in a GSM or CDMA system, or a base station (nodeB, BTS) in a WCDMA system.
  • BTS base transceiver station
  • NodeB base station
  • NB can also be an evolved base station (evolutional nodeB, eNB or eNodeB) in the LTE system, can also be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario, or the network device can It is a relay station, an access point, a vehicle-mounted device, and a network device in a 5G network or a network device in a future evolved PLMN network, etc., which are not limited in this embodiment of the present application.
  • evolutional nodeB, eNB or eNodeB in the LTE system
  • CRAN cloud radio access network
  • the network device can It is a relay station, an access point, a vehicle-mounted device, and a network device in a 5G network or a network device in a future evolved PLMN network, etc., which are not limited in this embodiment of the present application.
  • the sidelink transmission technology (sidelink, SL) is different from the way communication data is received or sent through the base station in the traditional cellular system.
  • the sidelink system adopts the method of terminal-to-terminal direct communication, so it has higher spectral efficiency and Lower transmission delay.
  • Two transmission modes are defined in the 3rd generation partnership project ( 3rd generation partnership project, 3GPP): Mode A and Mode B.
  • FIG. 1 is a schematic diagram of a communication system 100 employing mode A of sidelink transmission.
  • the side link (SL) communication resources of the terminal device 102 or the terminal device 103 are allocated by the network device 101, for example, the network device 101 provides the communication resource for the terminal device 102 through a downlink (DL) link.
  • the SL resource is authorized, and the terminal device 102 sends data to the terminal device 103 on the authorized SL resource.
  • the terminal device 103 may also send data to the terminal device 102 on the SL resource authorized by the network device 101 .
  • the network device 101 may allocate SL resources for a single transmission to the terminal device, or may allocate SL resources for semi-static transmission to the terminal device.
  • FIG. 2 is a schematic diagram of a communication system 200 adopting sidelink transmission mode B. As shown in FIG. During the uplink communication, the terminal device 202 or the terminal device 203 selects a resource in the resource pool to perform sidelink data transmission.
  • D2D device-to-device
  • V2X vehicle to everything
  • D2D communication is divided into different stages for research.
  • ProSe Proximity based service
  • the resource pool is discontinuous in the time domain, so that the UE can discontinuously send/receive data on the sidelink, thereby achieving the effect of power saving.
  • V2X because the vehicle system has continuous power supply, power efficiency is not the main issue, but the delay of data transmission is the main issue, so the system design requires the terminal equipment to perform continuous transmission and reception.
  • the 3GPP conclusion in the pre-research stage is that the base station can configure the parameters of the discontinuous reception (DRX) operation of the remote (remote) terminal through a relay (relay) terminal.
  • DRX discontinuous reception
  • the standardization stage there is no conclusion on how to configure the specific details of DRX.
  • NR V2X is not limited to broadcast scenarios, but has been further expanded to unicast and multicast scenarios, and the application of V2X is studied in these scenarios.
  • NR V2X will also define the above two resource authorization modes of mode 1 (mode-1) and mode 2 (mode-2); further, users may be in a mixed mode, that is, they can use both Mode-1 is used to obtain resources, and mode-2 can be used to obtain resources at the same time.
  • the resource acquisition is indicated through the sidelink authorization, that is, the sidelink authorization indicates the corresponding physical sidelink control channel (physical sidelink control channel, PSCCH) and physical sidelink shared channel (physical sidelink shared channel, PSSCH) resources The time-frequency position of .
  • NR V2X introduces HARQ retransmission based on feedback, not limited to unicast communications, including multicast communications;
  • 3GPP introduced the UE-to-network relay function based on layer 3 relay.
  • the remote UE can access the network through the relay UE, and the relay UE undertakes the network protocol (internet protocol, IP) layer.
  • IP network protocol
  • the relay function transmits data between the remote UE and the network, and the remote UE and the relay UE are connected through a side link.
  • the process of establishing a connection between the remote UE and the relay UE may be as shown in Figure 3, including but not limited to the following steps:
  • Relay UE and eNB mobility management entity (mobility management entity, MME), serving gateway (serving gateway, S-GW), public data network (public data network, PDN) gateway (PDN gateway, P-GW) execution E-UTRAN initial attach and/or UE requested PDN connection.
  • mobility management entity mobility management entity
  • serving gateway serving gateway
  • S-GW serving gateway
  • public data network public data network
  • PDN gateway public data network gateway
  • the remote UE and the relay UE perform a discovery process.
  • the remote UE and the relay UE can realize the mutual discovery process through the model A (model A) method or the model B (model B) method.
  • the remote UE establishes a one-to-one communication connection with the relay UE.
  • the relay UE can establish a new PDU connection for the relay.
  • the remote UE and the relay UE perform IP address/prefix allocation.
  • the relay UE sends a remote UE report to the MME through the eNB, and the remote UE report includes remote user ID and IP information.
  • the relay UE reports the ID and IP information of the remote UE to the network. According to the reported message, the network learns the association relationship between the relay UE and the remote UE, and performs corresponding bearer/session management and configuration, so that the remote UE The UE connects to the network through a relay.
  • the MME After receiving the remote UE report, the MME forwards the remote UE report to the S-GW, and the S-GW sends the remote UE report to the P-GW.
  • the remote UE can communicate with the network through the relay of the relay UE, realizing data relay transmission of the remote UE.
  • 3GPP studied the UE-to-network relay function based on layer 2 relay, that is, the remote UE accesses the network through the relay UE, and the relay UE undertakes the adaptation layer relay (above the RLC layer, The function below the PDCP layer) transmits data between the remote UE and the network, and the remote UE and the relay UE are connected through a side link.
  • layer 2 relay that is, the remote UE accesses the network through the relay UE, and the relay UE undertakes the adaptation layer relay (above the RLC layer, The function below the PDCP layer) transmits data between the remote UE and the network, and the remote UE and the relay UE are connected through a side link.
  • Universal terrestrial radio access network-UE universal terrestrial radio access network-UE, Uu
  • the MIB is mainly used to inform the UE whether to allow camping and whether to broadcast SIB1.
  • SIB1 mainly includes parameters related to cell selection and access control parameters of the current cell.
  • SIB2-SIB5 are related to cell reselection.
  • SIB6-SIB8 are used to broadcast public safety-related messages such as earthquake and small warning information.
  • SIB9 provides The global synchronous time can be used to initialize the GPS or correct the internal clock of the UE, etc.
  • the MIB can be broadcast through a broadcast control channel (broadcast control channel, BCCH) channel mapped to a broadcast channel (broadcast channel, BCH), where the BCCH is a logical channel.
  • SIB1 and OSI are broadcast through the BCCH channel mapped to the downlink-shared channel (DL-SCH), and the packet data convergence protocol (PDCP) layer in the layer 2 protocol is broadcast on the user plane , the radio link control (radio link control, RLC) protocol and the media access control (medium access control, MAC) layer are transparent, that is to say, the radio resource control (radio resource control, RRC) layer is abstracted
  • the syntax notation one (abstract syntax notation one, ASN.1) is encoded and sent directly to the physical layer for processing.
  • the system information includes some public safety-related information and global synchronization time information, etc.
  • UE-to-network relay UE-to-network Relay
  • the remote UE can acquire system information through the relay UE as required.
  • FIG. 4 is a schematic flowchart of a sidelink communication method 400 provided by the present application.
  • the second terminal may be a remote terminal
  • the first terminal may be a relay terminal
  • the first terminal may provide a relay service for the second terminal.
  • the second terminal sends first information to the first terminal, where the first information is used to request N types of system information blocks.
  • the first terminal receives the first information from the second terminal.
  • N is a positive integer.
  • the second terminal is in an idle state, or an inactive state, or a connected state.
  • the second terminal may determine the N types of system information blocks needed according to requirements, and send the first information to the first terminal, and notify the first terminal of the N types of system information blocks required by the second terminal through the first information.
  • the second terminal determines that it needs to obtain SIB6, SIB7, and SIB8, that is, system information blocks related to public safety
  • the second terminal sends first information to the first terminal
  • the first information may include the identifiers of SIB6, SIB7, and SIB8 information.
  • the first terminal determines that the second terminal needs to acquire SIB6, SIB7, and SIB8 according to the identification information of SIB6, SIB7, and SIB8 included in the first information.
  • the present application is not limited thereto.
  • the second terminal may determine the required N types of system information blocks according to requirements, and then determine the granularity of the system information blocks requested by the first information according to the network connection status of the first terminal.
  • the second terminal determines that the granularity of the system message block of the first information request is a system message block.
  • the second terminal determines that the granularity of the first information request system message block is a system message, and the system message includes one or more system messages piece.
  • the second terminal may determine the required N types of system information blocks according to requirements, and then determine the number of system information blocks requested by the first information according to the network connection status of the first terminal.
  • the second terminal determines the number of system message blocks requested by the first information according to the network connection state of the first terminal, including: if the network connection state of the first terminal is a connected state, the second terminal It is determined that the first information includes one type of system information block among the N types of system information blocks.
  • the second terminal may request one type of system information block from the first terminal each time.
  • the second terminal can determine various required system message blocks according to requirements, and the first terminal is in the connected state, then the second terminal can send multiple request information to the first terminal, and each request information (that is, the first information One example) is used to request a system message block required by the second terminal.
  • the second terminal determines the number of system message blocks requested by the first information according to the network connection state of the first terminal, including: if the network connection state of the first terminal is an idle state or an inactive state (inactive state), the second terminal determines that the first information includes N types of system message blocks, where N is an integer greater than or equal to 1.
  • the second terminal may request the first terminal for N types of system information blocks required by the second terminal through the first information.
  • the first information may be system message on demand acquisition (on demand SI acquisition) information or system message on demand request information.
  • the first information may be carried in an RRC message of the PC5 interface (that is, a PC5-RRC message).
  • the first information includes a first system message request list
  • the first system message request list includes identification information of N types of system message blocks.
  • the first terminal After receiving the first information sent by the second terminal, the first terminal obtains the first system message request list, and determines the system message required by the second terminal according to the identification information of the system message block in the first system message request list blocks; and/or after receiving the first information sent by the second terminal, the first terminal acquires one or N types of system information blocks required by the second terminal according to the content of the first information.
  • the first terminal sends second information to the second terminal, where the second information is used to indicate at least one of N types of system information blocks.
  • the second terminal receives the second information from the first terminal.
  • the first terminal After receiving the first information from the second terminal, the first terminal determines the N types of system information blocks required by the second terminal. The first terminal may provide the second terminal with at least one of the N types of system information blocks through the second information.
  • the first terminal may determine the number of system information blocks indicated by the second information according to the network connection status of the first terminal.
  • the first terminal determines that the second information includes one of the N types of system information blocks; that is, the network connection state of the first terminal
  • the first terminal may send a system message block required by the second terminal to the second terminal each time. For example, if the first terminal is in the connected state, the first terminal may send multiple pieces of information to the second terminal, and each piece of information (that is, an example of the second information) is used to indicate a type of system message block required by the second terminal .
  • the first terminal determines that the second information may include multiple types of system information blocks among the N types of system information blocks.
  • the first terminal determines whether there are valid (valid) N types of system information blocks required by the second terminal locally according to the first information.
  • a valid system message block may also be called a valid system message block, which is not limited in this application.
  • the first terminal sends the second information to the second terminal
  • the N types of system information blocks include the R types of system information blocks, and R is Positive integer, and less than or equal to N.
  • the first terminal locally has at least one type of system information block among the N types of system information blocks, and the at least one type of system information block is valid, then the first terminal sends the second information to the second terminal, and the The second information includes the at least one type of system information block (that is, locally valid R types of system information blocks).
  • the present application is not limited thereto.
  • the first terminal may be stipulated that if the first terminal locally has the N types of system information blocks, and the N types of system information blocks are all valid, then the first terminal sends the second information to the second terminal, and the second information includes the N types of system message block, but the application is not limited thereto.
  • the first terminal obtains the M types of system information blocks from the network device, wherein the N types of system information blocks required by the second terminal include the M types of system information blocks block, M is a positive integer and less than or equal to N.
  • the first terminal determines that there are no valid M types of system information blocks required by the second terminal locally, the first terminal acquires one or more of the M types of system information blocks from the network device.
  • the first terminal obtaining the M types of system information blocks from a network device includes: the first terminal device sending ninth information to the network device, where the ninth information is used to request the M types of system information blocks one or more.
  • the system information broadcast status (si-BroadcastStatus) information of the third system information block in the M types of system information blocks is set to not broadcasting (notBroadcasting), and the first terminal may send the ninth information to the network device to request the Three system information blocks, the network device sends the third system information block to the first terminal after receiving the ninth information.
  • the present application is not limited thereto.
  • the first terminal may determine one or more system information blocks of the ninth information request according to the first information from the second terminal. But the present application is not limited thereto.
  • the obtaining the M types of system message blocks from the network device by the first terminal includes: the first terminal device receiving one or more of the M types of system messages from the network device.
  • the system message broadcast status (si-BroadcastStatus) information of the fourth system message block in the M types of system message blocks is not set to not broadcasting (notBroadcasting)
  • the first terminal may receive a broadcast message from the network device to obtain The fourth system message block.
  • the present application is not limited thereto.
  • the first terminal After the first terminal acquires the valid M types of system information blocks from the network device, it may send the M types of system information blocks to the second terminal.
  • the first terminal may send the second information to the second terminal after acquiring valid M types of system information blocks, where the second information includes N types of system information blocks required by the second terminal. Or, after acquiring the first information, the first terminal determines that there are no valid M types of system information blocks locally, and there are N-M types of valid system information blocks of the N types of system information blocks except the M types of system information blocks. Then the first terminal sends second information to the second terminal, where the second information includes the valid N-M types of system information blocks. After the first terminal receives valid M types of system information blocks from the network device, the first terminal forwards the M types of system information blocks to the second terminal, but the present application is not limited thereto.
  • the ninth information is carried in a dedicated system information block request (DedicateSIBRequest) message.
  • DedicateSIBRequest dedicated system information block request
  • the first terminal may perform a random access procedure to request system information. That is to say, the first terminal device sends the ninth information to the network device during the random access process.
  • the ninth information is carried in a system information request message, where the system information request message is used to request a system information block requested by the first terminal, where the system information block requested by the first terminal includes the M
  • the system information blocks requested by the first terminal may also include at least one system information block required by the first terminal and/or the second At least one system message block required by three terminals, wherein the first terminal provides relay service for the third terminal.
  • the system message request message only requests one or more of the M types of system message blocks required by the second terminal, and after the first terminal sends the system message request message to the network device, it receives the request from the network device
  • the feedback information of the message includes one or more of the M types of system information blocks required by the second terminal, and the first terminal forwards the feedback information to the second terminal, that is, the first terminal does not need to further split and obtain
  • the system information block in the feedback information is forwarded as a relay to forward the feedback information to the second terminal.
  • the system message request message includes one or more of the M types of system message blocks required by the second terminal and at least one system message block required by the first terminal, and the first terminal sends the system message block to the network device After the message request message, the feedback information of the request message from the network device is received, the feedback information includes the system information block required by the second terminal and the system information block required by the first terminal, and the first terminal reads the feedback information to obtain the second After the system information block required by the terminal is forwarded to the second terminal.
  • the ninth information includes a system information block list, where the system information block list includes identification information of the system information block requested by the first terminal.
  • system message block list includes one or more of the following:
  • the network device may send the system information block requested by the first terminal to the first terminal in a unicast or broadcast manner according to the system information block request information from the first terminal.
  • the first terminal sends the second system information block to the second terminal.
  • Ten information where the tenth information is used to indicate that the second system information block cannot be provided for the second terminal, and the N types of system information blocks include the second system information block.
  • the tenth information may be sent to the second terminal before or after the first terminal receives the first information.
  • the first terminal can determine the N types of system information blocks required by the second terminal through the first information, but the first terminal cannot obtain the second system information blocks required by the second terminal, then the first terminal can use The tenth information notifies the second terminal that the second system information block cannot be provided.
  • the second terminal notifies the first terminal through the first information that the second terminal needs SIB1, SIB2, and SIB9, but the first terminal cannot obtain SIB9, then the first terminal sends tenth information to the second terminal, and the tenth information indicates Unable to provide SIB9 for the second terminal.
  • the present application is not limited thereto.
  • the network device notifies the first terminal that the second system information block cannot be provided, and after the first terminal determines that the second system information block cannot be obtained from the network, the first terminal may notify the second terminal that the second system information block cannot be provided through the tenth message. System message block. The second terminal will not request the second system information block from the first terminal again.
  • the second system information block may be any one of system information blocks such as MIB, SIB1 to SIB14 that cannot be obtained by the first terminal, and this application does not limit this.
  • the second terminal can notify the first terminal of the system information block required by the second terminal through the first information, so that the first terminal can provide the system information block for the second terminal according to the needs of the second terminal, so that the second terminal System message blocks can be obtained on demand. Further, according to the validity judgment of the local system message by the first terminal, a valid system message block required by the second terminal is provided for the second terminal, so that the second terminal can obtain a valid system message block and/or the first terminal The system information block is obtained from the network and forwarded to the second terminal, so that the second terminal can obtain a valid system information block.
  • FIG. 5 is a schematic flowchart of a sidelink communication method 500 provided by the present application.
  • the relay UE sends a valid (or legal) system message block to the remote UE after receiving the system message on-demand request information from the remote UE through the PC5 interface, and Each time an updated system message is received from the base station, it is forwarded to the remote UE until the relay link with the remote UE is released.
  • the sidelink communication method 500 may include but not limited to the following steps:
  • the remote UE sends system information on-demand request information 1 to the relay UE, where the system information on-demand request information 1 is used to request N types of system information blocks.
  • the relay UE receives the on-demand request information 1 of the system message from the remote UE.
  • the remote UE requests required N types of system information blocks from the relay UE through the system information on-demand request information 1 as required.
  • the system message on-demand request information 1 is a PC5-RRC message.
  • the system message on-demand request information 1 may include identification information of the N types of system message blocks.
  • the system message on-demand request information 1 includes a system message block request list, and the system message block request list includes the N types of Identification information of the system message block.
  • the relay UE After receiving the system information on-demand request information 1, the relay UE determines the N types of system information blocks needed by the remote UE according to the identification information of the system information blocks included in the system information on-demand request information 1.
  • the relay UE determines whether there is at least one type of effective system information block in the N types of system information blocks locally.
  • the relay UE determines the N types of system information blocks required by the remote UE according to the system information on-demand request information 1 .
  • the relaying UE checks whether there is at least one type of effective system information block among the N types of system information blocks locally.
  • the relay UE may obtain one or more of the M types of system information blocks from the network device.
  • the N types of system information blocks include the M system information blocks, and M is less than or equal to N. That is to say, the M types of system information blocks are requested by the remote UE, and the relay UE does not have a valid system information block locally.
  • the relay determines a manner of acquiring one or more system information blocks among the M types of system information blocks according to system information broadcast status (si-BroadcastStatus) information corresponding to the M types of system information blocks.
  • system information broadcast status si-BroadcastStatus
  • the relay UE can obtain the information in the M types of system information blocks by receiving a broadcast message from a network device. at least one type of system information block; when M types of system information blocks include system information broadcast status (si-BroadcastStatus) information is set to not broadcast system information blocks, the relay UE can perform S503 to obtain M types of system information At least one of the system message blocks in the block.
  • the relay UE sends a system message requesting information 2 on demand to the network device.
  • the network device receives the system message requesting information 2 for relaying the UE.
  • the system message on-demand request information 2 includes a system message block requested by the relay UE, where the system message block requested by the relay UE includes one or more of the above M types of system message blocks.
  • the system information requested by the relay UE further includes system information blocks required by the relay UE, and/or, the system information blocks requested by the relay UE further include required system message blocks.
  • the relay UE may request the network device for system information 2 according to the RRC state of the relay UE (that is, an example of the network connection state).
  • the relay UE if the relay UE is in the connected state, the relay UE sends a dedicated system information block request (DedicatedSIBRequest) message (that is, an example of the system information request information 2 as required) to the network device.
  • a dedicated system information block request (DedicatedSIBRequest) message (that is, an example of the system information request information 2 as required)
  • the relay UE performs a random access procedure to obtain system information. During the random access process, the relay UE sends the system message on-demand request information 2 to the network device.
  • the network device sends a first system message to the relay UE, where the first system message includes a system message block requested by the relay UE.
  • the relay UE receives the first system message from the network device.
  • the network device may request information 2 according to the system message, and send the first system message to the relay UE in a unicast or broadcast manner.
  • the present application is not limited thereto.
  • the first system message includes a system message block list
  • the system message block list includes a system message block requested by the relay UE.
  • the relay UE After the relay UE acquires the valid M types of system information blocks through the first system message and/or the system message broadcast by the network, the relay UE locally has valid N types of system message blocks, and the relay UE executes S505 . Or, if the relay UE determines in S502 that there are N types of system information blocks required by the remote UE locally, the relay UE performs S505. Alternatively, if the relay UE determines in S502 that there are M types of N types of system information blocks required by the remote UE locally, the relay UE performs S505.
  • the relay UE sends a second system message to the remote UE, where the second system message includes one or more of the N types of system message blocks.
  • the remote UE receives the second system message from the relay UE. This enables the remote UE to obtain one or more of the effective N types of system information blocks it needs.
  • the relay UE After S505, if the relay UE finds that any system information block in the N types of system information blocks required by the remote UE or in the system information block request list corresponding to the remote UE has been updated, the relay The UE sends the updated system information block to the remote UE. Such as steps S506 and S507.
  • the relay UE determines that the first system information block in the N types of system information blocks is updated.
  • the relay UE receives a short message (short message) from the network device. If the short message indicates that the system message is updated, the relay UE can monitor the system message update at the next system message modification interval (modification period). When the UE finds that the first system information block is updated, the relay UE determines that the first system information block required by the remote UE is updated, and the relay UE may send the updated first system information block to the remote UE.
  • short message short message
  • the N types of system information blocks required by the remote UE include SIB3 (that is, an example of the first system information block), and the relay UE receives a short message from the network device indicating that the system
  • the modification interval monitors system information updates, if the cell reselection parameters carried in the SIB3 are updated. Then the relay UE sends the updated SIB3 to the remote UE.
  • the first system information block may be any one of system information blocks such as MIB, SIB1 to SIB14, which is updated by the network, and this application does not limit this.
  • the relay UE sends the updated first system information block to the remote UE.
  • the remote UE receives the updated first system information block from the relay UE. This enables the remote UE to obtain valid system information blocks in time.
  • FIG. 6 is a schematic flowchart of a sidelink communication method 600 provided by an embodiment of the present application.
  • the relay UE after receiving the system message on-demand request information 1 from the remote UE at the PC5 interface, the relay UE sends the valid system message and the valid time T of the system message to the remote UE, The remote UE considers the valid time of the system information from the relay UE to be T, and after the valid time, if it still needs to obtain the system information block, the remote UE sends the system message on-demand request information 3 to the relay UE.
  • the sidelink communication method 600 may include but not limited to S601 to S607, where S601 to S604 correspond to S501 to S504 in the embodiment shown in FIG. For the sake of brevity, it will not be repeated here.
  • the relay UE sends a second system message and a valid time T to the remote UE, where the second system message includes at least one of the N types of system message blocks.
  • the remote UE receives the second system message and the valid time T from the relay UE.
  • the valid time is used to indicate the valid duration of the system message.
  • the valid time T is the time interval for ensuring that the system message blocks in the second system message are valid, that is, the valid time length of the system message blocks in the second system message is equal to T, and when the valid time expires, Then the system message block in the second system message is considered invalid or invalid (not valid).
  • the valid time may also be called the system message valid time.
  • the relay UE may carry the second system message and the valid time of the system message in the same message and send it to the remote UE, or may carry the second system message and the valid time of the system message in different messages and send it to the remote UE. UE. This application does not limit this.
  • the relay UE may first send the second system message to the remote UE, and then send the valid time of the system message to the remote UE, or, the relay UE may first send the valid time of the system message to the remote UE, and then send the valid time of the system message to the remote UE. Send the second system message.
  • This application does not limit this.
  • the relay UE may only send the second system message to the remote end, and the valid time of the system message is specified in the protocol, and/or the relay UE is pre-configured for the remote UE through the PC5-RRC message, and/or pre-configured by the network for the remote UE.
  • the present application is not limited thereto.
  • the remote UE After the remote UE determines the valid time T of the system message, it considers that the system message block in the second system message is valid within the valid time T of the system message after receiving the second system message. After the valid time T of the system message (that is, whether the valid time T of the system message expires), or when the time interval after receiving the second system message is greater than the valid time T of the system message, the remote UE considers the second system message invalid.
  • the remote UE determines that the valid time has expired.
  • the time interval after the remote UE receives the second system message is greater than T, the remote UE determines that the validity time of the system message has expired, and the system message block in the second system message is invalid. If the remote UE still needs the system message block, the remote The terminal UE determines the required system information block, and executes S607.
  • the remote UE sends system message on-demand request information 3 to the relay UE, where the system message on-demand request information 3 is used to request at least one system message block.
  • the relay UE receives the system message on-demand request information 3 from the remote UE, and determines whether there is a valid system message block required by the remote UE locally, and the subsequent steps are similar to S602 to S605, and the above description can be referred to , will not be described here for brevity.
  • the relay UE provides the remote UE with the system information block required by the remote UE, and notifies the remote UE of the effective time T of the system information block provided, so that the remote UE can judge and obtain the system information according to the effective time T effectiveness.
  • FIG. 7 is a schematic flowchart of a sidelink communication method 700 provided by an embodiment of the present application.
  • the relay UE and the remote UE each maintain an on demand request list (on demand SI request list) from the remote UE, and the remote UE adds (add), and/or Delete (remove) and/or release (release) the corresponding indication information to notify the relay UE to update the system information on-demand request list.
  • the sidelink communication method 700 may include but not limited to the following steps:
  • the remote UE sends system message on-demand request information 1 to the relay UE, where the system message on-demand request information 1 includes a first system message request list.
  • the relay UE receives the system information on-demand request information 1 from the remote UE, and determines the first system information request list corresponding to the remote UE.
  • the first system message request list may also be called system message on-demand request list 1 (on demand SI request list1), which is not limited in this application.
  • the system information on-demand request list includes identification information of N types of system information blocks required by the remote UE.
  • the relay UE may determine the N types of system information blocks required by the remote UE according to the identification information of the system information blocks included in the system information request list.
  • S702 to S705 are sequentially corresponding to S502 to S505 in the embodiment shown in FIG. 5 .
  • the relay UE After obtaining the first system information request list corresponding to the remote UE, the relay UE stores the first system information request list.
  • the system information block indicated in the first system information request list may be In the case of updating (for example, it is determined that the system information block is updated through a short message from the network device), the remote UE is notified of the updated system information block required by the remote UE.
  • the remote UE and the relay UE can perform the corresponding operations in S706 to S708; if the remote UE needs to Delete the required system information block, then the remote UE and the relay UE can perform the corresponding operations in S709 to S711; if the remote UE determines that the system information block is not needed, the remote UE and the relay UE can perform S712 to S714 It should be noted that this application does not limit the execution sequence of system information blocks required by the remote UE and the relay UE to add, delete, and release the remote UE.
  • the remote UE determines to add L types of required system information blocks.
  • the remote UE sends fifth information to the relay UE, which is used to indicate adding L types of system information blocks to the system information blocks required by the remote UE.
  • the relay UE receives the fifth information from the remote UE, and the relay UE determines that the remote UE needs to add L types of system information blocks according to the fifth information.
  • the fifth information includes a system message addition list or called a system message on-demand addition list (onDemandSIAddList).
  • the system message addition list includes identification information of the L types of system message blocks.
  • the relay UE determines the second system information request list corresponding to the remote UE according to the fifth information.
  • the second system information request list includes N types of system information blocks and Q types of system information blocks included in the first system information request list, the L types of system information blocks indicated by the fifth information include the Q types of system information blocks, and the above
  • the N types of system information blocks do not include the Q types of system information blocks, and Q is a positive integer.
  • the relay UE adds Q types of system information blocks to the first system information request list to obtain the second system information request list, where the Q types of system information blocks are included in the L types of system information blocks, and the above-mentioned System message blocks not included in the N types of message blocks.
  • the relay UE adds Q types of system information blocks included in the system information addition list and not included in the first system information request list to the first system information request list, and obtains the second List of system message requests.
  • the relay UE determines whether there are valid Q types of system information blocks locally, and if so, the relay UE can send the remote UE Sending the Q types of system information blocks, if some or all of them do not exist, the relay UE can request a valid system information block from the network device, and notify the remote UE after obtaining the effective system information blocks required by the remote UE.
  • the relay UE may send one or more of the Q types of system information blocks to the remote UE, and may also send one or more of the above N types of system information blocks and the Q types of system information blocks to the remote UE one or more of. This application does not limit this.
  • the remote UE determines to delete K types of required system information blocks.
  • the remote UE sends sixth information to the relay UE, which is used to instruct to delete a system information block in system information blocks required by the remote UE.
  • the relay UE receives the sixth information from the remote UE.
  • the sixth information includes a system message deletion list or called a system message on-demand deletion list (onDemandSIRemoveList).
  • the system message deletion list includes identification information of the K types of system message blocks.
  • the relay UE determines a third system information request list corresponding to the remote UE according to the sixth information.
  • the P type of system information blocks are not included in the third system information request list.
  • the system message request list corresponding to the remote UE maintained by the relay UE and the remote UE is the first system message request list
  • the relay UE may delete P types of system information blocks from the first system information request list according to the sixth information to obtain a third system information request list, wherein, the N types of system information blocks in the first system information request list and the sixth
  • the K types of system message blocks indicated by the information all include the P types of system message blocks, and P is a positive integer. If the sixth information includes the system information deletion list, the relay UE deletes the P types of system information blocks included in the system information deletion list and also included in the first system information request list in the first system information request list, and obtains the third List of system message requests.
  • the relay UE can use the sixth information , deleting P types of system message blocks from the second system message request list to obtain a third system message request list.
  • the N+Q types of system information blocks in the second system information request list and the K types of system information blocks indicated by the sixth information both include the P types of system information blocks, and P is a positive integer.
  • the relay UE deletes the P types of system information blocks included in the system information deletion list and also included in the second system information request list in the second system information request list, to obtain the third List of system message requests.
  • the remote UE determines that it does not need to obtain the system information block from the relay UE.
  • the remote UE sends seventh information to the relay UE, which is used to indicate that the remote UE does not need the system information block.
  • the relay UE receives the seventh information from the remote UE.
  • the seventh information includes a system message release list or called a system message on-demand release list (onDemandSIReleaseList).
  • onDemandSIReleaseList a system message on-demand release list
  • the relay UE determines to stop sending the system information block to the remote UE according to the seventh information.
  • the relay UE may delete/release the system information request list corresponding to the remote UE, and does not need to forward the system information block for the remote UE before receiving the system information request information from the remote UE again.
  • a synchronization mechanism for on-demand system information acquisition between the remote UE and the relay UE is provided.
  • the relay UE can notify the remote UE that the required system information is updated, and the remote UE can notify the relay.
  • the remote UE's requirements for system information blocks are updated. Realize that the remote UE can obtain system information as required.
  • Fig. 8 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • the communication device 800 may include a processing unit 810 and a transceiver unit 820 .
  • the communications apparatus 800 may correspond to the first terminal in the above method embodiments, that is, the UE, or a chip configured in (or used in) the first terminal.
  • the communication device 800 may correspond to the first terminal in the methods 400, 500, 600, and 700 according to the embodiments of the present application, and the communication device 800 may include a A unit of the method executed by the first terminal in the methods 400, 500, 600, and 700. Moreover, each unit in the communication device 800 and the above-mentioned other operations and/or functions are for realizing the corresponding processes of the methods 400, 500, 600, and 700 in FIG. 4, FIG. 5, FIG. 6, and FIG. 7, respectively.
  • the transceiver unit 820 in the communication device 800 may be an input/output interface or circuit of the chip, and the communication device 800
  • the processing unit 810 may be a processor in a chip.
  • processing unit 810 of the communication device 800 may be used to process instructions or data to implement corresponding operations.
  • the communication device 800 may further include a storage unit 830, the storage unit 830 may be used to store instructions or data, and the processing unit 810 may execute the instructions or data stored in the storage unit, so that the communication device realizes corresponding operations , the transceiver unit 820 in the communication device 800 in the communication device 800 may correspond to the transceiver 910 in the terminal device 900 shown in FIG. 9 , and the storage unit 830 may correspond to the terminal device 900 shown in FIG. 9 memory in .
  • the transceiver unit 820 in the communication device 800 can be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it can correspond to the The transceiver 910 in the terminal device 900, the processing unit 810 in the communication device 800 may be implemented by at least one processor, for example, may correspond to the processor 920 in the terminal device 900 shown in FIG.
  • the processing unit 810 can be realized by at least one logic circuit.
  • the communication device 800 may correspond to the second terminal in the above method embodiments, that is, the UE, or a chip configured in (or used in) the second terminal.
  • the communication device 800 may correspond to the second terminal in the methods 400, 500, 600, and 700 according to the embodiments of the present application, and the communication device 800 may include a A unit of the method executed by the second terminal in the methods 400, 500, 600, and 700. Moreover, each unit in the communication device 800 and the above-mentioned other operations and/or functions are for realizing the corresponding processes of the methods 400, 500, 600, and 700 in FIG. 4, FIG. 5, FIG. 6, and FIG. 7, respectively.
  • the transceiver unit 820 in the communication device 800 may be an input/output interface or circuit of the chip, and the communication device 800
  • the processing unit 810 may be a processor in a chip.
  • processing unit 810 of the communication device 800 may be used to process instructions or data to implement corresponding operations.
  • the communication device 800 may further include a storage unit 830, the storage unit 830 may be used to store instructions or data, and the processing unit 810 may execute the instructions or data stored in the storage unit, so that the communication device realizes corresponding operations , the transceiver unit 820 in the communication device 800 in the communication device 800 may correspond to the transceiver 910 in the terminal device 900 shown in FIG. 9 , and the storage unit 830 may correspond to the terminal device 900 shown in FIG. 9 memory in .
  • the transceiver unit 820 in the communication device 800 can be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it can correspond to the The transceiver 910 in the terminal device 900, the processing unit 810 in the communication device 800 may be implemented by at least one processor, for example, may correspond to the processor 920 in the terminal device 900 shown in FIG.
  • the processing unit 810 can be realized by at least one logic circuit.
  • FIG. 9 is a schematic structural diagram of a terminal device 900 provided by an embodiment of the present application.
  • the terminal device 900 may be applied to the systems shown in FIG. 1 and FIG. 2 , and perform the functions of the first terminal or the second terminal in the above method embodiments.
  • the terminal device 900 includes a processor 920 and a transceiver 910 .
  • the terminal device 900 further includes a memory 930 .
  • the processor 920, the transceiver 910, and the memory can communicate with each other through an internal connection path to transmit control and/or data signals, the memory is used to store computer programs, and the processor 920 is used to execute the computer in the memory. program to control the transceiver 910 to send and receive signals.
  • the processor 920 and the memory may be combined into a processing device, and the processor 920 is configured to execute the program codes stored in the memory to realize the above functions.
  • the memory may also be integrated in the processor 920, or be independent of the processor 920.
  • the processor 920 may correspond to the processing unit in FIG. 8 .
  • the above-mentioned transceiver 910 may correspond to the transceiver unit in FIG. 8 .
  • the transceiver 910 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Among them, the receiver is used to receive signals, and the transmitter is used to transmit signals.
  • the terminal device 900 shown in FIG. 9 can implement various processes involving the terminal device in the embodiments of the methods 400 , 500 , 600 , and 700 in FIGS. 4 , 5 , 6 , and 7 .
  • the operations and/or functions of the various modules in the terminal device 900 are respectively for implementing the corresponding processes in the foregoing method embodiments.
  • the above-mentioned processor 920 can be used to execute the actions implemented by the terminal device described in the previous method embodiments, and the transceiver 910 can be used to execute the actions described in the previous method embodiments sent by the terminal device to the network device or received from the network device. action.
  • the transceiver 910 can be used to execute the actions described in the previous method embodiments sent by the terminal device to the network device or received from the network device. action.
  • the terminal device 900 may further include a power supply, configured to provide power to various devices or circuits in the terminal device.
  • the embodiment of the present application also provides a processing device, including a processor and an interface; the processor is configured to execute the method in any one of the above method embodiments.
  • the above processing device may be one or more chips.
  • the processing device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated circuit (ASIC), or a system chip (system on chip, SoC). It can be a central processor unit (CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), or a microcontroller (micro controller unit) , MCU), can also be a programmable controller (programmable logic device, PLD) or other integrated chips.
  • CPU central processor unit
  • NP network processor
  • DSP digital signal processor
  • microcontroller micro controller unit
  • PLD programmable logic device
  • each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software.
  • the steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the 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, register.
  • 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. To avoid repetition, no detailed description is given here.
  • the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above-mentioned method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable 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 connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented 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, register.
  • 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 present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code is executed by one or more processors, the device including the processor Execute the methods in the above embodiments.
  • the present application also provides a computer-readable storage medium, the computer-readable storage medium stores program code, and when the program code is run by one or more processors, the processing includes the The device of the device executes the method in the above-mentioned embodiment.
  • the present application further provides a system, which includes the aforementioned one or more network devices.
  • the system may further include the aforementioned one or more terminal devices.
  • the disclosed devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the modules is only a logical function division. In actual implementation, there may be other division methods.
  • multiple modules can be combined or integrated into Another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of modules may be in electrical, mechanical or other forms.

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Abstract

本申请实施例提供一种侧行链路通信方法、设备及存储介质,该方法包括:第一终端接收来自第二终端的第一信息,该第一信息用于请求N种系统消息块,N为正整数;该第一终端向该第二终端发送第二信息,该第二信息用于指示该N种系统消息块中的至少一种。能够实现中继通信的远端UE按照需求获取系统消息。

Description

侧行链路通信方法、设备及存储介质 技术领域
本申请实施例涉及通信技术,尤其涉及一种侧行链路通信方法、设备及存储介质。
背景技术
在通信领域,用户设备(user equipment,UE)除了可以通过蜂窝通信接口即用户设备-通用移动通信系统陆地接入网络(UE-UTRAN,Uu)接口进行通信外,还可以通过直连通信接口即基于近场的业务通信(接口)5(proximity-based service communication(interface)5,PC5)接口直接进行用户设备之间的通信。
当UE处于网络覆盖之外或用户设备与无线接入网(random access network,RAN)间通信质量差时,还可以采用非直接通信方式(又称为中继通信方式),可以由既建立PC5接口连接又建立Uu接口连接的UE作为中继设备,传递远端UE与网络之间的数据。然而,目前的非直接通信方式还有待完善。
发明内容
本申请实施例提供一种侧行链路通信方法、设备及存储介质,使得中继通信的远端UE可以实现按照需求获取系统消息。
第一方面,本申请实施例可提供一种侧行链路通信方法,该方法包括:
第一终端接收来自第二终端的第一信息,该第一信息用于请求N种系统消息块,N为正整数;
该第一终端向该第二终端发送第二信息,该第二信息用于指示该N种系统消息块中的至少一种。
第二方面,本申请实施例还可提供一种侧行链路通信方法,该方法包括:
第二终端向第一终端发送第一信息,该第一信息用于请求N种系统消息块,N为正整数;
该第二终端接收来自该第一终端的第二信息,该第二信息包含该N种系统消息块中的至少一种。
第三方面,本申请实施例还可提供一种通信装置,该通信装置配置于第一终端,包括:
收发单元,用于接收来自第二终端的第一信息,该第一信息用于请求N种系统消息块,N为正整数;
处理单元,用于确定第二信息,该第二信息用于指示该N种系统消息块中的至少一种;
该收发单元,还用于向该第二终端发送第二信息。
第四方面,本申请实施例还可提供一种通信装置,该通信装置配置于第二终端设备,包括:
处理单元,用于确定所需的N种系统消息块;
收发单元,用于向第一终端发送第一信息,该第一信息用于请求该N种系统消息块,N为正整数;
该收发单元,还用于接收来自该第一终端发送第二信息,该第二信息包含该N种系统消息块中的至少一种。
第五方面,本申请实施例还可提供一种终端设备,包括:
处理器、存储器、与网络设备进行通信的接口;
该存储器存储计算机执行指令;
该处理器执行该存储器存储的计算机执行指令,使得该处理器执行如第一方面或第二方面任一项提供的侧行链路通信方法。
第六方面,本申请实施例提供一种计算机可读存储介质该计算机可读存储介质中存储有计算机执行指令,当该计算机执行指令被处理器执行时用于实现如第一方面或第二方面任一项该的侧行链路通信方法。
第七方面,本申请实施例提供一种程序,当该程序被处理器执行时,用于执行如上第一方面或第二方面任一项该的侧行链路通信方法。
可选地,上述处理器可以为芯片。
第八方面,本申请实施例提供一种计算机程序产品,包括程序指令,程序指令用于实现第一方面或第二方面任一项该的侧行链路通信方法。
第九方面,本申请实施例提供了一种芯片,包括:处理模块与通信接口,该处理模块能执行第一方面或第二方面任一项该的侧行链路通信方法。
进一步地,该芯片还包括存储模块(如,存储器),存储模块用于存储指令,处理模块用于执行存储模块存储的指令,并且对存储模块中存储的指令的执行使得处理模块执行第一方面或第二方面任一项该的侧行链路通信方法。
附图说明
图1为适用于本申请的通信系统的一个示意图;
图2为适用于本申请的通信系统的另一个示意图;
图3为本申请提供的远端UE与中继UE的连接建立过程的一个示意性流程图;
图4为本申请提供的侧行链路通信方法的一个示意性流程图;
图5为本申请提供的侧行链路通信方法的另一个示意性流程图;
图6为本申请提供的侧行链路通信方法的另一个示意性流程图;
图7为本申请提供的侧行链路通信方法的另一个示意性流程图;
图8为本申请提供的通信装置的示意图;
图9为本申请提供的通信设备的示意性结构图。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚,下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
本申请实施例的说明书、权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便这里描述的本申请的实施例,能够以除了在这里图示或描述的那些以外的顺序实施。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含,例如,包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
本申请实施例的技术方案可以应用于各种通信系统,例如:长期演进(long term evolution,LTE)系统、LTE频分双工(frequency division duplex,FDD)系统、LTE时分双工(time division duplex,TDD)、通用移动通信系统(universal mobile telecommunications system,UMTS)、全球微波接入互操作性(worldwide interoperability for microwave access,WiMAX)通信系统、第五代(5th generation,5G)系统或新无线(new radio,NR)以及未来的通信系统,如第六代移动通信系统等。本申请对此不作限定。
本申请实施例中的终端设备可以称为终端、用户设备(user equipment,UE),终端设备可以是接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端设备、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol,SIP)电话、无线本地环路(wireless local loop,WLL)站、个人数字处理(personal digital assistant,PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备,5G网络中的终端设备或者未来演进的公用陆地移动移动网(public land mobile network,PLMN)中的终端设备等,本申请实施例对此并不限定。
在本申请实施例中,该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备,是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称,如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上,或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备,更是通过软件支持以及数据交互、云端交互来实现 强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能,例如:智能手表或智能眼镜等,以及只专注于某一类应用功能,需要和其它设备如智能手机配合使用,如各类进行体征监测的智能手环、智能首饰等。此外,在本申请实施例中,终端设备还可以是车联网系统或物联网(internet of things,IoT)系统中的终端设备。
本申请实施例中的网络设备可以是用于与终端设备通信的设备,该网络设备可以是GSM或CDMA系统中的基站(base transceiver station,BTS),也可以是WCDMA系统中的基站(nodeB,NB),还可以是LTE系统中的演进型基站(evolutional nodeB,eNB或eNodeB),还可以是云无线接入网(cloud radio access network,CRAN)场景下的无线控制器,或者该网络设备可以为中继站、接入点、车载设备、以及5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等,本申请实施例并不限定。
侧行链路传输技术(sidelink,SL)与传统的蜂窝系统中通信数据通过基站接收或者发送的方式不同,侧行链路系统采用终端到终端直接通信的方式,因此具有更高的频谱效率以及更低的传输时延。在第三代合作伙伴计划(3 rd generation partnership project,3GPP)定义了两种传输模式:模式A和模式B。
-模式A:图1为采用侧行链路传输模式A的通信系统100的一个示意图。如图1所示,终终端设备102或终端设备103的侧行链路(SL)通信资源是由网络设备101分配的,例如,网络设备101通过下行(downlink,DL)链路为终端设备102授权SL资源,终端设备102在该授权的SL资源上向终端设备103发送数据。同样,终端设备103也可以在网络设备101为其授权的SL资源上向终端设备102发送数据。网络设备101可以为终端设备分配单次传输的SL资源,也可以为终端设备分配半静态传输的SL资源。
-模式B:图2为采用侧行链路传输模式B的通信系统200的一个示意图,如图2所示,终端设备202和终端设备203预配置了侧行链路资源池,在需要进行侧行链路通信时,终端设备202或终端设备203在资源池中选择一个资源进行侧行链路的数据传输。
下面对本申请中涉及到的相关技术和术语进行说明。
一、LTE设备到设备(device-to-device,D2D)通信、车辆外联(vehicle to everything,V2X)通信
在3GPP中,D2D通信分成了不同的阶段进行研究。
-邻近服务(proximity based service,ProSe):版本12(release 12,Rel-12)、版本13(release13,Rel-13)标准协议中中设备到设备通信,是针对ProSe的场景进行了研究,其主要针对公共安全类的业务。
在ProSe中,通过配置资源池在时域上的位置,例如资源池在时域上非连续,达到UE在侧行链路上非连续发送/接收数据,从而达到省电的效果。
-V2X:在Rel-14/15中,车联网系统针对车车通信的场景进行了研究,其主要面向相对高速移动的车车、车人通信的业务;
在V2X中,由于车载系统具有持续的供电,因此功率效率不是主要问题,而数据传输的时延是主要问题,因此在系统设计上要求终端设备进行连续的发送和接收。
-进一步增强的D2D(further enhanced D2D,FeD2D):在Rel-14中,这个场景对于可穿戴设备通过手机接入网络的场景进行了研究,其主要面向是低移动速度以及低功率接入的场景。
在FeD2D中,在预研阶段3GPP结论为基站可以通过一个中继(relay)终端去配置远端(remote)终端的非连续接收(discontinuous reception,DRX)操作的参数,但是由于该课题没有进一步进入标准化阶段,如何进行DRX配置的具体细节没有结论。
二、NR V2X
NR V2X在LTE V2X的基础上,不局限于广播场景,而是进一步拓展到了单播和组播的场景,在这些场景下研究V2X的应用。
-类似于LTE V2X,NR V2X也会定义上述模式1(mode-1)、模式2(mode-2)两种资源授权模式;更进一步,用户可能处在一个混合的模式下,即既可以使用mode-1进行资源的获取,又同时可以使用mode-2进行资源的获取。该资源获取通过侧行链路授权的方式指示,即侧行链路授权指示相应的物理侧行控制信道(physical sidelink control channel,PSCCH)与物理侧行共享信道(physical sidelink shared channel,PSSCH)资源的时频位置。
-不同于LTE V2X,除了无反馈的、终端设备自主发起的混合自动请求重传(hybrid automatic repeat req终端设备st,HARQ)重传,NR V2X引入了基于反馈的HARQ重传,不限于单播通信,也包括组播通信;
三、侧行链路用户设备至网络的中继(UE-to-network Relay)
在Rel-13ProSe中,3GPP引入了基于层3中继的UE-to-network中继功能,远端UE通过可以中继UE接入网络,中继UE承担网络协议(internet protocol,IP)层中继的功能,在远端UE和网络间传递数据,而远端UE和中继UE通过侧行链路相连。
示例性地,远端UE与中继UE的连接建立过程可以如图3所示,包括但不限于以下步骤:
1.中继UE与eNB、移动管理实体(mobility management entity,MME)、服务网关(serving gateway,S-GW)、公用数据网(public data network,PDN)网关(PDN gateway,P-GW)执行E-UTRAN初始附着和/或UE请求的PDN连接。
2.远端UE与中继UE执行发现过程。
远端UE与中继UE可以通过模型A(model A)方式或模型B(model B)方式实现相互发现过程。
3.远端UE与中继UE建立一对一通信连接。可选地,中继UE可以为中继建立一个新的PDU连接。
4.远端UE与中继UE进行IP地址/前缀(prefix)分配。
5.中继UE通过eNB向MME发送远端UE报告,该远端UE报告中包括远端用户ID、IP信息。
中继UE向网络上报远端UE的ID,以及IP信息,根据此上报消息,网络获知中继UE和远端UE的关联关系,从而进行相应的承载/会话管理以及配置,从而使得远端UE通过中继UE连接到网络。
6.MME接收到远端UE报告后向S-GW转发该远端UE报告,在S-GW再将该远端UE报告发送给P-GW。
当网络中的节点获取远端UE报告后,远端UE可以通过中继UE的中继与网络进行通信,实现了远端UE的数据中继传输。
在Rel-15FeD2D中,3GPP研究了基于层2中继的UE-to-network中继功能,即远端UE通过中继UE接入网络,中继UE承担适应层中继(RLC层之上,PDCP层之下)的功能,在远端UE和网络间传递数据,而远端UE和中继UE通过侧行链路相连。但是这部分工作后续没有进行标准化。
三、通用陆地无线接入网-UE(universal terrestrial radio access network-UE,Uu)接口系统消息广播
在移动通信系统中,系统消息的内容可以按照信息块的方式来定义,可以分为主消息块(master information block,MIB)、系统消息块(system information block,SIB)1以及SIB n(n=2,…,14),SIB2~SIB14可以称为其他系统消息(other system information,OSI)。MIB主要用于通知UE是否允许驻留以及是否在广播SIB1。SIB1主要包括当前小区的小区选择相关参数以及接入控制参数等,SIB2~SIB5与小区重选有关,SIB6~SIB8用于广播与公共安全相关的消息如地震和还小预警信息等,SIB9提供了全球同步时间可以用于GPS的初始化或者校正UE内部的时钟等。
MIB可以通过映射到广播信道(broadcast channel,BCH)的广播控制信道(broadcast control channel,BCCH)信道进行广播的,其中该BCCH为逻辑信道。SIB1和OSI是通过映射到下行共享信道(downlink-shared channel,DL-SCH)的BCCH信道进行广播的,在用户面上对层2协议中的分组数据汇聚协议(packet data convergence protocol,PDCP)层,无线链路控制(radio link control,RLC)协议和媒体接入控制(medium access control,MAC)层来说是透明的,也就是说无线资源控制(radio resource control,RRC)层在进行了抽象语法符号1(abstract syntax notation one,ASN.1)编码以后直接发送给物理层来进行处理。
根据前文描述,系统消息中包括一些公共安全相关信息以及全球同步时间信息等,然而在UE至网络的中继(UE-to-network Relay)通信中,还缺少远端UE获取系统消息的有效机制,远端UE可以按照需求通过中继UE获取系统消息。
图4是本申请提供的侧行链路通信方法400的示意性流程图。如图4所示,第二终端可以是 远端终端,第一终端可以中继终端,第一终端可以为第二终端提供中继服务。
S401,第二终端向第一终端发送第一信息,该第一信息用于请求N种系统消息块。
相应地,第一终端接收来自第二终端的该第一信息。其中,N为正整数。可选地,第二终端处于空闲态、或非激活态、或连接态。
一种实施方式中,第二终端可以根据需求确定需要的N种系统消息块,并向第一终端发送第一信息,通过第一信息通知第一终端第二终端需要的N种系统消息块。
例如,第二终端确定需要获取SIB6、SIB7和SIB8,即公共安全相关的系统消息块,则第二终端向第一终端发送第一信息,该第一信息中可以包括SIB6、SIB7和SIB8的标识信息。第一终端接收到来自第二终端的该第一信息后,根据第一信息中包括的SIB6、SIB7和SIB8的标识信息,确定第二终端需要获取SIB6、SIB7和SIB8。但本申请不限于此。
另一种实施方式中,第二终端可以根据需求确定需要的N种系统消息块,再根据第一终端的网络连接状态,确定第一信息请求的系统消息块的粒度。
可选地,若该第一终端的网络连接状态为连接态,该第二终端确定该第一信息请求系统消息块的粒度为系统消息块。
可选地,若该第一终端的网络连接状态为空闲态或非激活态,该第二终端确定该第一信息请求系统消息块的粒度为系统消息,该系统消息包括一个或多个系统消息块。
另一种实施方式中,第二终端可以根据需求确定需要的N种系统消息块,再根据第一终端的网络连接状态,确定第一信息请求的系统消息块的个数。
可选地,第二终端根据第一终端的网络连接状态,确定第一信息请求的系统消息块的个数,包括:若第一终端的网络连接状态为连接态(connected state),第二终端确定第一信息中包括N种系统消息块中的一种系统消息块。
也就是说,在第一终端的网络连接状态为连接态的情况下,第二终端可以每次向第一终端请求一种系统消息块。例如,第二终端可以根据需求确定需要的多种系统消息块,且第一终端处于连接态,则第二终端可以向第一终端发送多个请求信息,每个请求信息(即第一信息的一个示例)用于请求第二终端所需的一种系统消息块。
可选地,第二终端根据第一终端的网络连接状态,确定第一信息请求的系统消息块的个数,包括:若第一终端的网络连接状态为空闲态(idle state)或非激活态(inactive state),第二终端确定第一信息中包括N种系统消息块,其中N为大于或等于1的整数。
也就是说,在第一终端的网络连接状态为空闲态或非激活态的情况下,第二终端可以通过第一信息向第一终端请求第二终端所需的N种系统消息块。
作为示例非限定,该第一信息可以是系统消息按需获取(on demand SI acquisition)信息或系统消息按需请求信息。
可选地,该第一信息可以承载在PC5接口的RRC消息(即PC5-RRC消息)中。
可选地,该第一信息中包括第一系统消息请求列表,该第一系统消息请求列表包括N种系统消息块的标识信息。
第一终端接收到第二终端发送的第一信息后,获取该第一系统消息请求列表,根据该第一系统消息请求列表中的系统消息块的标识信息,确定第二终端所需的系统消息块;和/或第一终端接收到第二终端发送的第一信息后,根据第一信息内容获取第二终端需要的1种或N种系统消息块。
S402,第一终端向第二终端发送第二信息,第二信息用于指示N种系统消息块中的至少一种。
相应地,第二终端接收来自第一终端的该第二信息。
第一终端接收到来自第二终端的第一信息后,确定第二终端需要的N种系统消息块。第一终端可以通过第二信息为第二终端提供该N种系统消息块中的至少一种。
可选地,第一终端可以根据第一终端的网络连接状态,确定第二信息用于指示的系统消息块的个数。
若该第一终端的网络连接状态为连接态,该第一终端确定该第二信息中包括该N种系统消息块中的一种系统消息块;也就是说,在第一终端的网络连接状态为连接态的情况下,第一终端可以每次向第二终端发送第二终端所需的一种系统消息块。例如,若第一终端处于连接态,则第一终端可以向第二终端发送多个信息,每个信息(即第二信息的一个示例)用于指示第二终端所需的一种系统消息块。
若该第一终端的网络连接状态为空闲态或非激活态,若N大于1,该第一终端确定该第二信息中可以包括该N种系统消息块中的多种系统消息块。
在一种可选的实施方式中,该第一终端根据该第一信息,确定本地是否存在有效的(valid)第二终端所需的N种系统消息块。
需要说明的是,有效的系统消息块也可以称为合法的系统消息块,本申请对此不作限定。
可选地,若第一终端本地存在有效的R种系统消息块,该第一终端向该第二终端发送该第二信息,该N种系统消息块中包括该R种系统消息块,R为正整数,且小于或等于N。
例如,可以规定若第一终端本地存在该N种系统消息块中的至少一种系统消息块,且该至少一种系统消息块有效,则第一终端向第二终端发送该第二信息,该第二信息包括该至少一种系统消息块(即本地存在的有效的R种系统消息块)。但本申请不限于此。
再例如,可以规定若第一终端本地存在该N种系统消息块,且该N种系统消息块均有效,则第一终端向第二终端发送该第二信息,该第二信息包括该N种系统消息块,但本申请不限于此。
可选地,若不存在有效的M种系统消息块,该第一终端从网络设备获取该M种系统消息块,其中,第二终端所需的N种系统消息块中包括该M种系统消息块,M为正整数,且小于或等于N。
也就是说,当第一终端确定本地不存在有效的第二终端所需的M种系统消息块的情况下,第一终端从网络设备获取该M种系统消息块种的一种或多种。
可选地,该第一终端从网络设备获取该M种系统消息块,包括:该第一终端设备向该网络设备发送第九信息,该第九信息用于请求该M种系统消息块中的一种或多种。
例如,M种系统消息块中的第三系统消息块的系统消息广播状态(si-BroadcastStatus)信息被设置为不广播(notBroadcasting),第一终端可以向网络设备发送第九信息,用于请求第三系统消息块,网络设备接收到该第九信息后向第一终端发送该第三系统消息块。但本申请不限于此。
第一终端可以根据来自第二终端的第一信息,确定第九信息请求的一种或多种系统消息块。但本申请不限于此。
可选地,该第一终端从网络设备获取该M种系统消息块,包括:该第一终端设备接收来自该网络设备的该M种系统消息中的一种或多种。例如,M种系统消息块中的第四系统消息块的系统消息广播状态(si-BroadcastStatus)信息未被设置为不广播(notBroadcasting),则第一终端可以接收来自网络设备的广播消息,以获取该第四系统消息块。但本申请不限于此。
第一终端从网络设备获取到有效的该M种系统消息块后,可以向第二终端发送该M种系统消息块。
其中,第一终端可以在获取到有效的M种系统消息块后,向第二终端发送第二信息,该第二信息包括第二终端所需的N种系统消息块。或者,第一终端获取第一信息后,确定本地不存在有效的该M种系统消息块,存在有效的该N种系统消息块中除该M种系统消息块以外的N-M种系统消息块。则第一终端向第二终端发送第二信息,该第二信息包括该有效的N-M种系统消息块。当第一终端接收到来自网络设备的有效的M种系统消息块后,第一终端再向第二终端转发该M种系统消息块,但本申请不限于此。
一种实施方式中,若第一终端为连接态,第九信息承载在专用系统消息块请求(DedicateSIBRequest)消息。
另一种实施方式中,若第一终端为空闲态或非激活态,第一终端可以执行随机接入过程以请求系统消息。也就是说,该第一终端设备在随机接入过程中向网络设备发送该第九信息。
可选地,该第九信息承载在系统消息请求消息中,该系统消息请求消息用于请求第一终端请求的系统消息块,其中第一终端请求的系统消息块包括第二终端所需的M种系统消息块(即第九信息指示的系统消息块)中的一种或多种,第一终端请求的系统消息块还可以包括第一终端所需的至少一种系统消息块和/或第三终端所需的至少一种系统消息块,其中,该第一终端为该第三终端提供中继服务。
一个示例中,系统消息请求消息仅请求第二终端所需的M种系统消息块中的一种或多种,第一终端向网络设备发送该系统消息请求消息后,接收来自网络设备对该请求消息的反馈信息,该反馈信息包括第二终端所需的M种系统消息块中的一种或多种,第一终端将该反馈信息转发给第二终端,即第一终端无需进一步拆分获取该反馈信息中的系统消息块,作为中继转发将该反馈信息转发给第二终端。
另一个示例中,系统消息请求消息包括第二终端所需的M种系统消息块中的一种或多种以及第一终端所需的至少一个系统消息块,第一终端向网络设备发送该系统消息请求消息后,接收来自网络设备对该请求消息的反馈信息,该反馈信息包括第二终端所需的、和第一终端所需的系统消息块,第一终端读取该反馈信息获取第二终端所需的系统消息块后,转发给第二终端。
可选地,该第九信息包括系统消息块列表,该系统消息块列表包括第一终端请求的系统消息块的标识信息。
例如,该系统消息块列表中包括以下一项或多项:
第二终端所需的M种系统消息块的标识信息、第一终端所需的系统消息块的标识信息、以及与第一终端建立连接的其他远端UE所需的系统消息块的标识信息。
网络设备可以根据来自第一终端的系统消息块请求信息,以单播或广播的方式向第一终端发送第一终端请求的系统消息块。
可选地,若该第一终端本地不存在有效的第二终端所需的第二系统消息块,且无法从网络获取该第二系统消息块,则该第一终端向该第二终端发送第十信息,该第十信息用于指示无法为该第二终端提供该第二系统消息块,该N种系统消息块中包括该第二系统消息块。
可选地,该第十信息可以在第一终端收到第一信息之前或之后发送给第二终端。
也就是说,第一终端通过第一信息可以确定第二终端所需的N种系统消息块,但第一终端无法获取其中第二终端所需的第二系统消息块,则第一终端可以通过第十信息通知第二终端无法提供该第二系统消息块。
例如,第二终端通过第一信息通知第一终端,第二终端需要SIB1、SIB2、SIB9,而第一终端无法获取SIB9,则第一终端向第二终端发送第十信息,该第十信息指示无法为第二终端提供SIB9。但本申请不限于此。
或者,网络设备通知第一终端无法提供第二系统消息块,第一终端确定无法从网络获取该第二系统消息块后,则第一终端可以通过第十信息通知第二终端无法提供该第二系统消息块。第二终端不会再向第一终端请求该第二系统消息块。
需要说明的是,第二系统消息块可以是MIB、SIB1至SIB14等系统消息块中的任一种第一终端无法获取的系统消息块,本申请对此不做限定。
根据上述方案,第二终端可以通过第一信息通知第一终端第二终端所需的系统消息块,使得第一终端可以根据第二终端的需求为第二终端提供系统消息块,使得第二终端可以按需获取系统消息块。进一步,通过第一终端对本地系统消息的有效性判断,为第二终端提供有效的第二终端所需的系统消息块,使得第二终端可以获取到有效的系统消息块和/或第一终端从网络端获取系统消息块,并转发给第二终端,使得第二终端可以获取到有效的系统消息块。
图5是本申请提供的侧行链路通信方法500的示意性流程图。在该侧行链路通信方法500中,中继UE通过PC5接口接收到来自远端UE的系统消息按需请求信息后将有效的(或者称为合法的)系统消息块发给remote UE,并在每次接收到来自基站的更新的系统消息后转发给远端UE直到与远端UE之间的中继链路释放。该侧行链路通信方法500可以包括但不限于以下步骤:
S501,远端UE向中继UE发送系统消息按需请求信息1,该系统消息按需请求信息1用于请求N种系统消息块。
相应地,中继UE接收来自远端UE的该系统消息按需请求信息1。远端UE根据需求通过系统消息按需请求信息1向中继UE请求所需的N种系统消息块。
作为示例非限定,该系统消息按需请求信息1为PC5-RRC消息。
该系统消息按需请求信息1可以包括该N种系统消息块的标识信息,可选地,该系统消息按需请求信息1包括系统消息块请求列表,该系统消息块请求列表中包括该N种系统消息块的标识信息。中继UE接收到该系统消息按需请求信息1后,根据该系统消息按需请求信息1中包括的系统消息块的标识信息,确定远端UE需要的该N种系统消息块。
S502,中继UE确定本地是否存在有效的该N种系统消息块中的至少一种系统消息块。
中继UE根据系统消息按需请求信息1,确定远端UE需要的该N种系统消息块。中继UE查看本地是否存在有效的该N种系统消息块中的至少一种系统消息块。
若中继UE确定本地不存在有效的第二终端所需的M种系统消息块,则中继UE可以从网络设备获取该M种系统消息块中的一种或多种。其中N种系统消息块包括该M中系统消息块,M 小于或等于N。也就是说,该M种系统消息块为远端UE请求的、中继UE本地没有有效的系统消息块。
可选地,中继根据该M种系统消息块对应的系统消息广播状态(si-BroadcastStatus)信息,确定获取该M种系统消息块中的一种或多种系统消息块的方式。
例如,当M种系统消息块中包括系统消息广播状态(si-BroadcastStatus)信息未被设置为不广播的系统消息块时,中继UE可以通过接收网络设备的广播消息获取M种系统消息块中的至少一种系统消息块;当M种系统消息块中包括系统消息广播状态(si-BroadcastStatus)信息被设置为不广播的系统消息块时,中继UE可以执行S503,以获取M种系统消息块中的至少一种系统消息块。
S503,中继UE向网络设备发送系统消息按需请求信息2。
相应地,网络设备接收来中继UE的系统消息按需请求信息2。
该系统消息按需请求信息2包括中继UE请求的系统消息块,其中,中继UE请求的系统消息块包括上述M种系统消息块一种或多种。可选地,中继UE请求的系统消息还包括中继UE所需的系统消息块,和/或,中继UE请求的系统消息块还包括中继UE提供中继服务的其他远端UE所需的系统消息块。
可选地,中继UE可以根据中继UE的RRC状态(即网络连接状态的一个示例)向网络设备按需请求系统信息2。
一种实施方式中,若中继UE为连接态,则中继UE向网络设备发送专用的系统消息块请求(DedicatedSIBRequest)消息(即该系统消息按需请求信息2的一个示例)。
另一种实施方式中,若中继UE为空闲态或非激活态,则中继UE执行随机接入过程以获取系统消息。在该随机接入过程中该中继UE向网络设备发送该系统消息按需请求信息2。
S504,网络设备向中继UE发送第一系统消息,该第一系统消息包括中继UE请求的系统消息块。
相应地,中继UE接收来自网络设备的该第一系统消息。网络设备可以根据系统消息按需请求信息2,以单播或广播的方式向中继UE发送该第一系统消息。但本申请不限于此。
可选地,该第一系统消息中包括系统消息块列表,该系统消息块列表中包括中继UE请求的系统消息块。
中继UE通过该第一系统消息和/或网络广播的系统消息,获取到该有效的M种系统消息块后,则中继UE本地存在有效的该N种系统消息块,中继UE执行S505。或者,若中继UE在S502中确定本地存在远端UE所需的N种系统消息块,则中继UE执行S505。或者,若中继UE在S502中确定本地存在远端UE所需的N种系统消息块中的M种,则中继UE执行S505。
S505,中继UE向远端UE发送第二系统消息,该第二系统消息中包括该N种系统消息块中的一种或多种。
相应地,远端UE接收来自中继UE的该第二系统消息。使得远端UE获得其所需的有效的N种系统消息块中的一种或多种。
在S505之后,若中继UE发现远端UE所需的该N种系统消息块中或远端UE对应的系统消息块请求列表中包含的系统消息块中有系统消息块被更新,则中继UE向远端UE发送更新后的系统消息块。如步骤S506、S507。
S506,中继UE确定该N种系统消息块中的第一系统消息块被更新。
可选地,中继UE接收来自网络设备的短消息(short message),若该短消息指示系统消息更新,中继UE可以在下一个系统消息修改间隔(modification period)监听系统消息更新,若中继UE发现第一系统消息块被更新,则中继UE确定远端UE所需的第一系统消息块被更新,中继UE可以向远端UE发送更新后的第一系统消息块。
例如,远端UE所需的N种系统消息块中包括SIB3(即第一系统消息块的一个示例),中继UE接收到来自网络设备的短消息指示系统消息更新,中继UE在下一个系统修改间隔监听系统消息更新,,若该SIB3中承载的小区重选参数被更新。则中继UE向远端UE发送更新后的该SIB3。
需要说明的是,该第一系统消息块可以是MIB、SIB1至SIB14等系统消息块中的任意一种被网络更新的系统该消息块,本申请对此不作限定。
S507,中继UE向远端UE发送更新后的第一系统消息块。
相应地,远端UE接收来自中继UE的该更新后的第一系统消息块。使得远端UE能够及时获取有效的系统消息块。
图6是本申请实施例提供的侧行链路通信方法600的一个示意性流程图。在该侧行链路通信方法600中,中继UE在PC5接口接收到来自远端UE的系统消息按需请求信息1后,将有效的系统消息以及系统消息有效时间T发给远端UE,远端UE认为来自中继UE的系统消息的有效时间为T,并在该有效时间后,若仍然需要获取系统消息块,则远端UE向中继UE发送系统消息按需请求信息3。
该侧行链路通信方法600可以包括但不限于S601至S607,其中S601至S604与图5所示实施例中的S501至S504一一对应,具体实施方式可以参考前文中对图5的描述,为了简要,在此次不再赘述。
S605,中继UE向远端UE发送第二系统消息和有效时间T,该第二系统消息包括该N种系统消息块中的至少一种。
相应地,远端UE接收来自中继UE的第二系统消息和有效时间T。其中,该有效时间用于指示系统消息的有效时长。则在S605中该有效时间T为确保第二系统消息中的系统消息块有效的时间间隔,也就是说,第二系统消息中的系统消息块的有效时长等于T,当该有效时间到期,则该第二系统消息中的系统消息块被认为失效或无效(not valid)。该有效时间还可以称为系统消息有效时间。
应理解,中继UE可以将第二系统消息和系统消息有效时间承载在同一消息中发送给远端UE,也可以将第二系统消息和系统消息有效时间分别承载在不同消息中发送给远端UE。本申请对此不做限定。
例如,中继UE可以先向远端UE发送第二系统消息,再向远端UE发送系统消息有效时间,或者,中继UE可以先向远端UE发送系统消息有效时间,再向远端UE发送第二系统消息。本申请对此不做限定。
作为S605的一个替换步骤,中继UE可以仅向远端发送第二系统消息,而系统消息有效时间为协议规定的、和/或中继UE通过PC5-RRC消息为远端UE预配置的,和/或网络为远端UE预配置的。但本申请不限于此。
远端UE确定系统消息有效时间T后,认为在接收到第二系统消息之后的系统消息有效时间T内,第二系统消息中的系统消息块为有效的,当接收到第二系统消息之后的系统消息有效时间T后(即系统消息有效时间T是否到期),或者说当接收到第二系统消息之后的时间间隔大于系统消息有效时间T,则远端UE认为第二系统消息失效。
S606,远端UE确定有效时间到期。
远端UE接收到第二系统消息之后的时间间隔大于T,远端UE确定系统消息有效时间到期,第二系统消息中的系统消息块失效,若远端UE还需要系统消息块,则远端UE确定所需的系统消息块,并执行S607。
S607,远端UE向中继UE发送系统消息按需请求信息3,系统消息按需请求信息3用于请求至少一种系统消息块。
相应地,中继UE接收来自远端UE的系统消息按需请求信息3,确定本地是否存在有效的远端UE所需的系统消息块等,之后的步骤与S602至S605类似,可以参考上述描述,为了简要在此不再赘述。
根据上述方案,中继UE为远端UE提供远端UE所需的系统消息块,并且通知远端UE提供的系统消息块的有效时间T,能够使得远端UE根据有效时间T判断获取系统消息的有效性。
图7是本申请实施例提供的侧行链路通信方法700的一个示意性流程图。在侧行链路通信方法700中,中继UE和远端UE各自维护来自远端UE的系统消息按需请求列表(on demand SI request list),远端UE通过增加(add)、和/或删除(remove)、和/或释放(release)相应的指示信息通知中继UE更新系统消息按需请求列表。该侧行链路通信方法700可以包括但不限于以下步骤:
S701,远端UE向中继UE发送系统消息按需请求信息1,该系统消息按需请求信息1中包括第一系统消息请求列表。
相应地,中继UE接收来自远端UE的系统消息按需请求信息1,确定远端UE对应的第一系统消息请求列表。其中,第一系统消息请求列表也可以称为系统消息按需请求列表1(on demand SI  request list1),本申请对此不做限定。该系统消息按需请求列表包括远端UE所需的N种系统消息块的标识信息。中继UE可以根据该系统消息请求列表中包含的系统消息块的标识信息,确定远端UE所需的N种系统消息块。
S702至S705与图5所示实施例中的S502至S505依次对应,具体实施方式可以参考上述对图5的描述,为了简要,在此不再赘述。
中继UE获取到远端UE对应的第一系统消息请求列表后,存储该第一系统消息请求列表,可选地,在S705之后,可以在第一系统消息请求列表中指示的系统消息块被更新(例如通过来自网络设备的短消息确定系统消息块被更新)的情况下,通知远端UE更新后的远端UE所需的系统消息块。
当远端UE所需的系统消息块有变更时,若远端UE需要增加所需的系统消息块,则远端UE与中继UE可以执行S706至S708中相应的操作;若远端UE需要删除所需的系统消息块,则远端UE与中继UE可以执行S709至S711中相应的操作;若远端UE确定不需要系统消息块,则远端UE与中继UE可以执行S712至S714中相应的操作;需要说明的是,本申请对远端UE与中继UE增加、删除、释放远端UE所需的系统消息块的执行顺序不做限定。
S706,远端UE确定增加L种所需的系统消息块。
S707,远端UE向中继UE发送第五信息,用于指示在远端UE所需的系统消息块中增加L种系统消息块。
相应地,中继UE接收来自远端UE的该第五信息,中继UE根据该第五信息,确定远端UE需要增加L种系统消息块。
可选地,该第五信息包括系统消息增加列表或者称为系统消息按需增加列表(onDemandSIAddList)。该系统消息增加列表中包括该L种系统消息块的标识信息。
S708,中继UE根据第五信息,确定远端UE对应的第二系统消息请求列表。
该第二系统消息请求列表包括第一系统消息请求列表中包含的N种系统消息块和Q种系统消息块,第五信息指示的L种系统消息块中包含该Q种系统消息块,且上述N种系统消息块中不包含该Q种系统消息块,Q为正整数。
也就是说,中继UE在第一系统消息请求列表中增加Q种系统消息块,得到第二系统消息请求列表,其中,该Q种系统消息块为L种系统消息块中包含的、且上述N种消息块中不包含的系统消息块。
若该第五信息包括系统消息增加列表,则中继UE在第一系统消息请求列表中增加系统消息增加列表包含的、且第一系统消息请求列表不包含的Q种系统消息块,得到第二系统消息请求列表。
中继UE确定远端UE需要的系统消息块中增加了Q种系统消息块,则中继UE可以确定本地是否存在有效的该Q种系统消息块,若存在,中继UE可以向远端UE发送该Q种系统消息块,若部分或全部不存,中继UE可以向网络设备请求有效的系统消息块,并在获取到有效的远端UE所需的系统消息块后通知远端UE。中继UE可以向远端UE发送该Q种系统消息块中的一种或多种,也可以向远端UE发送上述N种系统消息块中的一种或多种以及该Q种系统消息块中的一种或多种。本申请对此不做限定。
S709,远端UE确定删除K种所需的系统消息块。
S710,远端UE向中继UE发送第六信息,用于指示在远端UE所需的系统消息块中删除种系统消息块。
相应地,中继UE接收来自远端UE的该第六信息。
可选地,该第六信息包括系统消息删除列表或者称为系统消息按需删除列表(onDemandSIRemoveList)。该系统消息删除列表中包括该K种系统消息块的标识信息。
S711,中继UE根据第六信息,确定远端UE对应的第三系统消息请求列表。
该第三系统消息请求列表中不包括P种系统消息块。
若远端UE与中继UE未执行S706至S708,则中继UE与远端UE维护的远端UE对应的系统消息请求列表为第一系统消息请求列表,
中继UE可以根据第六信息,在第一系统消息请求列表中删除P种系统消息块,得到第三系统消息请求列表,其中,第一系统消息请求列表中的N种系统消息块和第六信息指示的K种系统消息块中均包含该P种系统消息块,P为正整数。若该第六信息包括系统消息删除列表,则中继UE 在第一系统消息请求列表中删除系统消息删除列表包含的、且第一系统消息请求列表也包含的P种系统消息块,得到第三系统消息请求列表。
若远端UE与中继UE执行了S706至S708,则中继UE与远端UE维护的远端UE对应的系统消息请求列表为第二系统消息请求列表,中继UE在可以根据第六信息,在第二系统消息请求列表中删除P种系统消息块,得到第三系统消息请求列表。其中,第二系统消息请求列表中的N+Q种系统消息块和第六信息指示的K种系统消息块中均包含该P种系统消息块,P为正整数。若该第六信息包括系统消息删除列表,则中继UE在第二系统消息请求列表中删除系统消息删除列表包含的、且第二系统消息请求列表也包含的P种系统消息块,得到第三系统消息请求列表。
S712,远端UE确定不需要从中继UE获取系统消息块。
S713,远端UE向中继UE发送第七信息,用于指示远端UE不需要系统消息块。
相应地,中继UE接收来自远端UE的该第七信息。
可选地,该第七信息包括系统消息释放列表或者称为系统消息按需释放列表(onDemandSIReleaseList)。
S711,中继UE根据第七信息,确定停止向远端UE发送系统消息块。
例如,中继UE可以删除/释放远端UE对应的系统消息请求列表,在再次收到来自远端UE的系统消息请求信息前不需要再为远端UE转发系统消息块。
根据本申请的方案,提供了远端UE与中继UE间关于按需系统消息获取的同步机制,中继UE可以通知远端UE其所需的系统消息发生更新,远端UE可以通知中继UE远端UE对系统消息块需求发生更新。实现远端UE可以按照需求获取系统消息。
以上,结合图4至图7详细说明了本申请实施例提供的方法。以下介绍本申请实施例提供的装置。
图8是本申请实施例提供的通信装置的示意性框图。如图8所示,该通信装置800可以包括处理单元810和收发单元820。
在一种可能的设计中,该通信装置800可对应于上文方法实施例中的第一终端,即UE,或者配置于(或用于)第一终端中的芯片。
应理解,该通信装置800可对应于根据本申请实施例的方法400、500、600、700中的第一终端,该通信装置800可以包括用于执行图4、图5、图6、图7中的方法400、500、600、700中第一终端执行的方法的单元。并且,该通信装置800中的各单元和上述其他操作和/或功能分别为了实现图4、图5、图6、图7中的方法400、500、600、700的相应流程。
还应理解,该通信装置800为配置于(或用于)第一终端中的芯片时,该通信装置800中的收发单元820可以为芯片的输入/输出接口或电路,该通信装置800中的处理单元810可以为芯片中的处理器。
可选地,通信装置800的该处理单元810可以用于处理指令或者数据,以实现相应的操作。
可选地,通信装置800还可以包括存储单元830,该存储单元830可以用于存储指令或者数据,处理单元810可以执行该存储单元中存储的指令或者数据,以使该通信装置实现相应的操作,该通信装置800中的该通信装置800中的收发单元820为可对应于图9中示出的终端设备900中的收发器910,存储单元830可对应于图9中示出的终端设备900中的存储器。
应理解,各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明,为了简洁,在此不再赘述。
还应理解,该通信装置800为第一终端时,该通信装置800中的收发单元820为可通过通信接口(如收发器或输入/输出接口)实现,例如可对应于图9中示出的终端设备900中的收发器910,该通信装置800中的处理单元810可通过至少一个处理器实现,例如可对应于图9中示出的终端设备900中的处理器920,该通信装置800中的处理单元810可通过至少一个逻辑电路实现。
在另一种可能的设计中,该通信装置800可对应于上文方法实施例中的第二终端,即UE,或者配置于(或用于)第二终端中的芯片。
应理解,该通信装置800可对应于根据本申请实施例的方法400、500、600、700中的第二终端,该通信装置800可以包括用于执行图4、图5、图6、图7中的方法400、500、600、700中第二终端执行的方法的单元。并且,该通信装置800中的各单元和上述其他操作和/或功能分别为了实现图4、图5、图6、图7中的方法400、500、600、700的相应流程。
还应理解,该通信装置800为配置于(或用于)第二终端中的芯片时,该通信装置800中的收发单元820可以为芯片的输入/输出接口或电路,该通信装置800中的处理单元810可以为芯片中的处理器。
可选地,通信装置800的该处理单元810可以用于处理指令或者数据,以实现相应的操作。
可选地,通信装置800还可以包括存储单元830,该存储单元830可以用于存储指令或者数据,处理单元810可以执行该存储单元中存储的指令或者数据,以使该通信装置实现相应的操作,该通信装置800中的该通信装置800中的收发单元820为可对应于图9中示出的终端设备900中的收发器910,存储单元830可对应于图9中示出的终端设备900中的存储器。
应理解,各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明,为了简洁,在此不再赘述。
还应理解,该通信装置800为第二终端时,该通信装置800中的收发单元820为可通过通信接口(如收发器或输入/输出接口)实现,例如可对应于图9中示出的终端设备900中的收发器910,该通信装置800中的处理单元810可通过至少一个处理器实现,例如可对应于图9中示出的终端设备900中的处理器920,该通信装置800中的处理单元810可通过至少一个逻辑电路实现。
图9是本申请实施例提供的终端设备900的结构示意图。该终端设备900可应用于如图1、图2所示的系统中,执行上述方法实施例中第一终端或第二终端的功能。如图所示,该终端设备900包括处理器920和收发器910。可选地,该终端设备900还包括存储器930。其中,处理器920、收发器910和存储器之间可以通过内部连接通路互相通信,传递控制和/或数据信号,该存储器用于存储计算机程序,该处理器920用于执行该存储器中的该计算机程序,以控制该收发器910收发信号。
上述处理器920可以和存储器可以合成一个处理装置,处理器920用于执行存储器中存储的程序代码来实现上述功能。具体实现时,该存储器也可以集成在处理器920中,或者独立于处理器920。该处理器920可以与图8中的处理单元对应。
上述收发器910可以与图8中的收发单元对应。收发器910可以包括接收器(或称接收机、接收电路)和发射器(或称发射机、发射电路)。其中,接收器用于接收信号,发射器用于发射信号。
应理解,图9所示的终端设备900能够实现图4、图5、图6、图7中的方法400、500、600、700实施例中涉及终端设备的各个过程。终端设备900中的各个模块的操作和/或功能,分别为了实现上述方法实施例中的相应流程。具体可参见上述方法实施例中的描述,为避免重复,此处适当省略详细描述。
上述处理器920可以用于执行前面方法实施例中描述的由终端设备内部实现的动作,而收发器910可以用于执行前面方法实施例中描述的终端设备向网络设备发送或从网络设备接收的动作。具体请见前面方法实施例中的描述,此处不再赘述。
可选地,上述终端设备900还可以包括电源,用于给终端设备中的各种器件或电路提供电源。
本申请实施例还提供了一种处理装置,包括处理器和接口;该处理器用于执行上述任一方法实施例中的方法。
应理解,上述处理装置可以是一个或多个芯片。例如,该处理装置可以是现场可编程门阵列(field programmable gate array,FPGA),可以是专用集成芯片(application specific integrated circuit,ASIC),还可以是系统芯片(system on chip,SoC),还可以是中央处理器(central processor unit,CPU),还可以是网络处理器(network processor,NP),还可以是数字信号处理电路(digital signal processor,DSP),还可以是微控制器(micro controller unit,MCU),还可以是可编程控制器(programmable logic device,PLD)或其他集成芯片。
在实现过程中,上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器,处理器读取存储器中的信息,结合其硬件完成上述方法的步骤。为避免重复,这里不再详细描述。
应注意,本申请实施例中的处理器可以是一种集成电路芯片,具有信号的处理能力。在实现 过程中,上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器,处理器读取存储器中的信息,结合其硬件完成上述方法的步骤。
本申请实施例提供的方法,本申请还提供一种计算机程序产品,该计算机程序产品包括:计算机程序代码,当该计算机程序代码由一个或多个处理器执行时,使得包括该处理器的装置执行上述实施例中的方法。
根据本申请实施例提供的方法,本申请还提供一种计算机可读存储介质,该计算机可读存储介质存储有程序代码,当该程序代码由一个或多个处理器运行时,使得包括该处理器的装置执行上述实施例中的方法。
根据本申请实施例提供的方法,本申请还提供一种系统,其包括前述的一个或多个网络设备。还系统还可以进一步包括前述的一个或多个终端设备。
在本申请所提供的几个实施例中,应该理解到,所揭露的设备和方法,可以通过其它的方式实现。例如,以上所描述的设备实施例仅仅是示意性的,例如,该模块的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个模块可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,模块的间接耦合或通信连接,可以是电性,机械或其它的形式。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以所述权利要求的保护范围为准。

Claims (106)

  1. 一种侧行链路通信方法,其特征在于,所述方法包括:
    第一终端接收来自第二终端的第一信息,所述第一信息用于请求N种系统消息块,N为正整数;
    所述第一终端向所述第二终端发送第二信息,所述第二信息用于指示所述N种系统消息块中的至少一种。
  2. 根据权利要求1所述的方法,其特征在于,在所述第一终端与所述第二终端之间的中继连接释放之前,所述方法还包括:
    若所述N种系统消息块中的第一系统消息块被更新,所述第一终端向所述第二终端发送第三信息,所述第三信息用于指示更新后的所述第一系统消息块。
  3. 根据权利要求2所述的方法,其特征在于,所述方法还包括:
    所述第一终端接收来自网络设备的第四信息,所述第四信息用于指示至少一个系统消息块被更新;
    所述第一终端根据所述第四信息确定所述第一系统消息块被更新。
  4. 根据权利要求2或3所述的方法,其特征在于,所述第三信息中包括所述更新后的所述第一系统消息块或第一列表,
    其中,所述第一列表包括所述更新后的所述第一系统消息块。
  5. 根据权利要求4所述的方法,其特征在于,所述第一列表包括所述N种系统消息块中除所述第一系统消息块以外的系统消息块。
  6. 根据权利要求1至5中任一项所述的方法,其特征在于,所述第一信息包括第一系统消息请求列表。
  7. 根据权利要求6所述的方法,其特征在于,所述第一系统消息请求列表中包括所述N种系统消息块的标识信息。
  8. 根据权利要求6或7所述的方法,其特征在于,所述方法还包括:
    所述第一终端接收来自第二终端的第五信息,所述第五信息用于指示在所述第二终端所需的系统消息块中增加的L种系统消息块,L为正整数。
  9. 根据权利要求8所述的方法,其特征在于,所述方法还包括:
    所述第一终端根据所述第五信息,确定所述第二终端对应的第二系统消息请求列表,所述第二系统消息请求列表包括所述N种系统消息块和Q种系统消息块,所述L种系统消息块中包含所述Q种系统消息块,且所述N种系统消息块中不包含所述Q种系统消息块,Q为正整数。
  10. 根据权利要求9所述的方法,其特征在于,所述第一终端根据所述第五信息,确定所述第二终端对应的第二系统消息请求列表,包括:
    所述第一终端根据所述第五信息,在所述第一系统消息请求列表中增加所述Q种系统消息块,得到所述第二系统消息请求列表。
  11. 根据权利要求8至10中任一项所述的方法,其特征在于,所述第五信息包括系统消息增加列表。
  12. 根据权利要求11所述的方法,其特征在于,所述系统消息增加列表中包括所述L种系统消息块的标识信息。
  13. 根据权利要求6或7所述的方法,其特征在于,所述方法还包括:
    所述第一终端接收来自所述第二终端的第六信息,所述第六信息用于指示在所述第二终端所需的系统消息块中删除的K种系统消息块,K为正整数。
  14. 根据权利要求13所述的方法,其特征在于,所述方法还包括:
    所述第一终端根据第六信息,确定所述第二终端对应的第三系统消息请求列表,所述第三系统消息请求列表中不包括P种系统消息块,所述K种系统消息块和所述N种系统消息块中均包含的所述P种系统消息块,P为正整数。
  15. 根据权利要求14所述的方法,其特征在于,所述第一终端根据第六信息,确定所述第二终端对应的第三系统消息请求列表,包括:
    所述第一终端根据所述第六信息,在所述第一系统消息请求列表中删除所述P种系统消息块,得到所述第三系统消息请求列表。
  16. 根据权利要求13至15中任一项所述的方法,其特征在于,所述第六信息包括系统消息删除列表。
  17. 根据权利要求16所述的方法,其特征在于,所述系统消息删除列表包括所述K种系统消息块的标识信息。
  18. 根据权利要求1至17中任一项所述的方法,其特征在于,所述方法还包括:
    所述第一终端接收来自所述第二终端的第七信息,所述第七信息用于指示所述第二终端设备不需要系统消息块;和/或,
    所述第一终端停止向所述第二终端发送系统消息块。
  19. 根据权利要求18所述的方法,其特征在于,所述第七信息包括系统消息释放列表。
  20. 根据权利要求1至19中任一项所述的方法,其特征在于,所述方法还包括:
    所述第一终端向所述第二终端发送的有效时间,所述有效时间用于指示系统消息的有效时长。
  21. 根据权利要求20所述的方法,其特征在于,所述方法还包括:
    所述第一终端在发送所述第二信息后的所述有效时间之后,接收来自所述第二终端的第八信息,所述第八信息用于请求至少一种系统消息块。
  22. 根据权利要求20或21所述的方法,其特征在于,所述有效时间与所述第二信息承载在所述第一终端发送的同一消息中,和/或,
    所述有效时间为协议规定的、和/或PC5-RRC消息预配置的、和/或网络预配置的。
  23. 根据权利要求1至22中任一项所述的方法,其特征在于,所述方法还包括:
    所述第一终端根据所述第一信息,确定本地是否存在有效的所述N种系统消息块中一种或多种;
    所述第一终端向所述第二终端发送第二信息,包括:
    若存在有效的R种系统消息块,所述第一终端向所述第二终端发送所述第二信息,所述N种系统消息块中包括所述R种系统消息块,R为正整数,且小于或等于N。
  24. 根据权利要求23所述的方法,其特征在于,所述方法还包括:
    若不存在有效的M种系统消息块,所述第一终端从网络设备获取所述M种系统消息块中的一种或多种,所述N种系统消息块包括所述M种系统消息块,M为正整数,且小于或等于N。
  25. 根据权利要求24所述的方法,其特征在于,所述第一终端从网络设备获取所述M种系统消息块中的一种或多种,包括:
    所述第一终端设备向所述网络设备发送第九信息,所述第九信息用于请求所述M种系统消息块中的一种或多种,和/或,
    所述第一终端设备接收来所述网络设备的所述M种系统消息中的一种或多种。
  26. 根据权利要求25所述的方法,其特征在于,所述第九信息承载在系统消息请求消息中,所述系统消息请求消息还用于请求:
    所述第一终端所需的至少一种系统消息块和/或第三终端所需的至少一种系统消息块,其中,所述第一终端为所述第三终端提供中继服务。
  27. 根据权利要求25或26所述的方法,其特征在于,所述方法还包括:
    所述第一终端根据来自所述第二终端的所述第一信息,确定所述第九信息请求的一种或多种系统消息块。
  28. 根据权利要求1至27中任一项所述的方法,其特征在于,所述方法还包括:
    若所述第一终端本地不存在有效的第二系统消息块,且无法从网络获取所述第二系统消息块,则所述第一终端向所述第二终端发送第十信息,所述第十信息用于指示无法为所述第二终端提供所述第二系统消息块,所述N种系统消息块中包括所述第二系统消息块。
  29. 根据权利要求28所述的方法,其特征在于,所述第十信息与第二信息承载在同一消息中或不同消息中。
  30. 根据权利要求1至29中任一项所述的方法,其特征在于,所述第一终端向所述第二终端发送第二信息,包括:
    所述第一终端根据所述第一终端的网络连接状态,确定所述第二信息中包括所述N种系统消 息块中的一种或多种系统消息块。
  31. 根据权利要求1至30中任一项所述的方法,其特征在于,所述第二终端处于空闲态、或非激活态、或连接态。
  32. 一种侧行链路通信方法,其特征在于,所述方法包括:
    第二终端向第一终端发送第一信息,所述第一信息用于请求N种系统消息块,N为正整数;
    所述第二终端接收来自所述第一终端的第二信息,所述第二信息用于指示所述N种系统消息块中的至少一种。
  33. 根据权利要求32所述的方法,其特征在于,在所述第一终端与所述第二终端之间的中继连接释放之前,所述方法还包括:
    所述第二终端接收来自所述第一终端发送第三信息,所述第三信息用于指示更新后的第一系统消息块,所述N种系统消息块中包括所述第一系统消息块。
  34. 根据权利要求33所述的方法,其特征在于,所述第三信息中包括所述更新后的所述第一系统消息块或第一列表,
    其中,所述第一列表包括所述更新后的所述第一系统消息块。
  35. 根据权利要求34所述的方法,其特征在于,所述第一列表包括所述N种系统消息块中除所述第一系统消息块以外的系统消息块。
  36. 根据权利要求32至35中任一项所述的方法,其特征在于,所述第一信息包括第一系统消息请求列表。
  37. 根据权利要求36所述的方法,其特征在于,所述第一系统消息请求列表包括所述N种系统消息块的标识信息。
  38. 根据权利要求36或37所述的方法,其特征在于,所述方法还包括:
    所述第二终端向所述第一终端发送第五信息,所述第五信息用于指示在所述第二终端所需的系统消息块中增加的L种系统消息块,L为正整数。
  39. 根据权利要求38所述的方法,其特征在于,所述第五信息包括系统消息增加列表。
  40. 根据权利要求39所述的方法,其特征在于,所述系统消息增加列表中包括所述L种系统消息块的标识信息。
  41. 根据权利要求36或37中任一项所述的方法,其特征在于,所述方法还包括:
    所述第二终端向所述第一终端发送第六信息,所述第六信息用于指示在所述第二终端所需的系统消息块中删除的K种系统消息块,K为正整数。
  42. 根据权利要求41所述的方法,其特征在于,所述第六信息包括系统消息删除列表。
  43. 根据权利要求42所述的方法,其特征在于,所述系统消息删除列表包括所述K种系统消息块的标识信息。
  44. 根据权利要求32至43中任一项所述的方法,其特征在于,所述方法还包括:
    所述第二终端向所述第一终端发送第七信息,所述第七信息用于指示所述第二终端设备不需要系统消息块。
  45. 根据权利要求44所述的方法,其特征在于,所述第七信息包括系统消息释放列表。
  46. 根据权利要求32至45中任一项所述的方法,其特征在于,所述方法还包括:
    所述第二终端接收来自所述第一终端的有效时间,所述有效时间用于指示系统消息的有效时长。
  47. 根据权利要求46所述的方法,其特征在于,所述方法还包括:
    所述第二终端在接收到所述第二信息后的所述有效时间之后,向所述第一终端发送第八信息,所述第八信息用于请求至少一种系统消息块。
  48. 根据权利要求46或47所述的方法,其特征在于,所述有效时间与所述第二信息承载在所述第一终端发送的同一消息中,和/或,
    所述有效时间为协议规定的、和/或PC5-RRC消息预配置的,和/或网络预配置的。
  49. 根据权利要求32至48中任一项所述的方法,其特征在于,
    所述第二终端根据所述第一终端的网络连接状态,确定所述第一信息请求系统消息块的粒度。
  50. 根据权利要求49所述的方法,其特征在于,所述第二终端根据所述第一终端的网络连接状态,确定所述第一信息请求系统消息块的粒度,包括:
    若所述第一终端的网络连接状态为连接态,所述第二终端确定所述第一信息请求系统消息块的粒度为系统消息块;或者,
    若所述第一终端的网络连接状态为空闲态或非激活态,所述第二终端确定所述第一信息请求系统消息块的粒度为系统消息,所述系统消息包括一个或多个系统消息块。
  51. 根据权利要求32至50中任一项所述的方法,其特征在于,所述第二终端处于空闲态、或非激活态、或连接态。
  52. 一种侧行链路通信装置,其特征在于,所述装置配置于第一终端,包括:
    收发单元,用于接收来自第二终端的第一信息,所述第一信息用于请求N种系统消息块,N为正整数;
    处理单元,用于根据所述第一信息,确定第二信息,所述第二信息用于指示所述N种系统消息块中的至少一种;
    所述收发单元还用于向所述第二终端发送所述第二信息。
  53. 根据权利要求52所述的装置,其特征在于,在所述第一终端与所述第二终端之间的中继连接释放之前,
    若所述N种系统消息块中的第一系统消息块被更新,所述收发单元还用于向所述第二终端发送第三信息,所述第三信息用于指示更新后的所述第一系统消息块。
  54. 根据权利要求53所述的装置,其特征在于,
    所述收发单元还用于接收来自网络设备的第四信息,所述第四信息用于指示至少一个系统消息块被更新;
    所述处理单元还用于根据所述第四信息确定所述第一系统消息块被更新。
  55. 根据权利要求53或54所述的装置,其特征在于,所述第三信息中包括所述更新后的所述第一系统消息块或第一列表,
    其中,所述第一列表包括所述更新后的所述第一系统消息块。
  56. 根据权利要求55所述的装置,其特征在于,所述第一列表包括所述N种系统消息块中除所述第一系统消息块以外的系统消息块。
  57. 根据权利要求52至56中任一项所述的装置,其特征在于,所述第一信息包括第一系统消息请求列表。
  58. 根据权利要求57所述的装置,其特征在于,所述第一系统消息请求列表包括所述N种系统消息块的标识信息。
  59. 根据权利要求57或58所述的装置,其特征在于,
    所述收发单元还用于接收来自第二终端的第五信息,所述第五信息用于指示在所述第二终端所需的系统消息块中增加的L种系统消息块,L为正整数。
  60. 根据权利要求59所述的装置,其特征在于,
    所述处理单元还用于根据所述第五信息,确定所述第二终端对应的第二系统消息请求列表,所述第二系统消息请求列表包括所述N种系统消息块和Q种系统消息块,所述L种系统消息块中包含所述Q种系统消息块,且所述N种系统消息块中不包含所述Q种系统消息块,Q为正整数。
  61. 根据权利要求60所述的装置,其特征在于,
    所述处理单元具体用于根据所述第五信息,在所述第一系统消息请求列表中增加所述Q种系统消息块,得到所述第二系统消息请求列表。
  62. 根据权利要求59至61中任一项所述的装置,其特征在于,所述第五信息包括系统消息增加列。
  63. 根据权利要求62所述的装置,其特征在于,所述系统消息增加列表中包括所述L种系统消息块的标识信息。
  64. 根据权利要求57或58所述的装置,其特征在于,
    所述收发单元还用于接收来自所述第二终端的第六信息,所述第六信息用于指示在所述第二终端所需的系统消息块中删除的K种系统消息块,K为正整数。
  65. 根据权利要求64所述的装置,其特征在于,
    所述处理单元还用于根据第六信息,确定所述第二终端对应的第三系统消息请求列表,所述 第三系统消息请求列表中不包括P种系统消息块,所述K种系统消息块和所述N种系统消息块中均包含的所述P种系统消息块,P为正整数。
  66. 根据权利要求65所述的装置,其特征在于,
    所述处理单元具体用于根据所述第六信息,在所述第一系统消息请求列表中删除所述P种系统消息块,得到所述第三系统消息请求列表。
  67. 根据权利要求64至66中任一项所述的装置,其特征在于,所述第六信息包括系统消息删除列表。
  68. 根据权利要求67所述的装置,其特征在于,所述系统消息删除列表包括所述K种系统消息块的标识信息。
  69. 根据权利要求52至68中任一项所述的装置,其特征在于,
    所述收发单元还用于接收来自所述第二终端的第七信息,所述第七信息用于指示所述第二终端设备不需要系统消息块;和/或,
    所述处理单元还用于确定停止向所述第二终端发送系统消息块。
  70. 根据权利要求69所述的装置,其特征在于,所述第七信息包括系统消息释放列表。
  71. 根据权利要求52至70中任一项所述的装置,其特征在于,
    所述收发单元还用于向所述第二终端发送的有效时间,所述有效时间用于指示系统消息的有效时长。
  72. 根据权利要求71所述的装置,其特征在于,
    所述收发单元还用于在发送所述第二信息后的所述有效时间之后,接收来自所述第二终端的第八信息,所述第八信息用于请求至少一种系统消息块。
  73. 根据权利要求71或72所述的装置,其特征在于,所述有效时间与所述第二信息承载在同一消息中,和/或,
    所述有效时间为协议规定的、和/或PC5-RRC消息预配置的,和/或网络预配置的。
  74. 根据权利要求52至73中任一项所述的装置,其特征在于,
    所述处理单元还用于根据所述第一信息,确定本地是否存在有效的所述N种系统消息块中的一种或多种;
    所述收发单元具体用于在存在有效的R种系统消息块的情况下,向所述第二终端发送所述第二信息,所述N种系统消息块中包括所述R种系统消息块,R为正整数,且小于或等于N。
  75. 根据权利要求74所述的装置,其特征在于,
    所述收发单元具体用于在不存在有效的M种系统消息块的情况下,从网络设备获取所述M种系统消息块中的一种或多种,所述N种系统消息块包括所述M种系统消息块,M为正整数,且小于或等于N。
  76. 根据权利要求75所述的装置,其特征在于,所述收发单元具体用于:
    向所述网络设备发送第九信息,所述第九信息用于请求所述M种系统消息块中的一种或多种,和/或,
    接收来所述网络设备的所述M种系统消息中的一种或多种。
  77. 根据权利要求76所述的装置,其特征在于,所述第九信息承载在系统消息请求消息中,所述系统消息请求消息还用于请求:
    所述第一终端所需的至少一种系统消息块和/或第三终端所需的至少一种系统消息块,其中,所述第一终端为所述第三终端提供中继服务。
  78. 根据权利要求76或77所述的装置,其特征在于,
    所述处理单元还用于根据来自所述第二终端的所述第一信息,确定所述第九信息请求的一种或多种系统消息块。
  79. 根据权利要求52至78中任一项所述的装置,其特征在于,
    所述收发单元还用于在所述第一终端本地不存在有效的第二系统消息块,且无法从网络获取所述第二系统消息块的情况下,向所述第二终端发送第十信息,所述第十信息用于指示无法为所述第二终端提供所述第二系统消息块,所述N种系统消息块中包括所述第二系统消息块。
  80. 根据权利要求79所述的装置,其特征在于,所述第十信息与第二信息承载在同一消息中或不同消息中。
  81. 根据权利要求52至80中任一项所述的装置,其特征在于,以及,
    所述收发单元具体用于根据所述第一终端的网络连接状态,确定所述第二信息中包括所述N种系统消息块中的一种或多种系统消息块。
  82. 根据权利要求52至80中任一项所述的装置,其特征在于,所述第二终端处于空闲态、或非激活态、或连接态。
  83. 一种侧行链路通信装置,其特征在于,所述装置配置于第二终端,所述装置包括:
    处理单元,用于确定所述第二终端所需的N种系统消息块;
    收发单元,用于向第一终端发送第一信息,所述第一信息用于请求所述N种系统消息块,N为正整数;
    所述收发单元还用于接收来自所述第一终端的第二信息,所述第二信息用于指示所述N种系统消息块中的至少一种。
  84. 根据权利要求83所述的装置,其特征在于,在所述第一终端与所述第二终端之间的中继连接释放之前,
    所述收发单元还用于接收来自所述第一终端发送第三信息,所述第三信息用于指示更新后的第一系统消息块,所述N种系统消息块中包括所述第一系统消息块。
  85. 根据权利要求84所述的装置,其特征在于,所述第三信息中包括所述更新后的所述第一系统消息块或第一列表,
    其中,所述第一列表包括所述更新后的所述第一系统消息块。
  86. 根据权利要求85所述的装置,其特征在于,所述第一列表包括所述N种系统消息块中除所述第一系统消息块以外的系统消息块。
  87. 根据权利要求71至85中任一项所述的装置,其特征在于,所述第一信息包括第一系统消息请求列表。
  88. 根据权利要求87所述的装置,其特征在于,所述第一系统消息请求列表包括所述N种系统消息块的标识信息。
  89. 根据权利要求87或88所述的装置,其特征在于,
    所述收发单元还用于向所述第一终端发送第五信息,所述第五信息用于指示在所述第二终端所需的系统消息块中增加的L种系统消息块,L为正整数。
  90. 根据权利要求89所述的装置,其特征在于,所述第五信息包括系统消息增加列表。
  91. 根据权利要求89所述的装置,其特征在于,所述系统消息增加列表中包括所述L种系统消息块的标识信息。
  92. 根据权利要求87或88所述的装置,其特征在于,
    所述收发单元还用于向所述第一终端发送第六信息,所述第六信息用于指示在所述第二终端所需的系统消息块中删除的K种系统消息块,K为正整数。
  93. 根据权利要求92所述的装置,其特征在于,所述第六信息包括系统消息删除列表。
  94. 根据权利要求93所述的装置,其特征在于,所述系统消息删除列表包括所述K种系统消息块的标识信息。
  95. 根据权利要求87至94中任一项所述的装置,其特征在于,
    所述收发单元还用于向所述第一终端发送第七信息,所述第七信息用于指示所述第二终端设备不需要系统消息块。
  96. 根据权利要求95所述的装置,其特征在于,所述第七信息包括系统消息释放列表。
  97. 根据权利要求83至96中任一项所述的装置,其特征在于,
    所述收发单元还用于接收来自所述第一终端的有效时间,所述有效时间用于指示系统消息的有效时长。
  98. 根据权利要求97所述的装置,其特征在于,
    所述收发单元还用于在接收到所述第二信息后的所述有效时间之后,向所述第一终端发送第八信息,所述第八信息用于请求至少一种系统消息块。
  99. 根据权利要求97或98所述的装置,其特征在于,所述有效时间与所述第二信息承载在所述第一终端发送的同一消息中,和/或,
    所述有效时间为协议规定的、和/或PC5-RRC消息预配置的,和/或网络预配置的。
  100. 根据权利要求83至99中任一项所述的装置,其特征在于,
    所述处理单元还用于根据所述第一终端的网络连接状态,确定所述第一信息请求系统消息块的粒度。
  101. 根据权利要求100所述的装置,其特征在于,
    所述处理单元具体用于在所述第一终端的网络连接状态为连接态的情况下,确定所述第一信息请求系统消息块的粒度为系统消息块,其中所述N为1;或者,
    所述处理单元具体用于在所述第一终端的网络连接状态为空闲态或非激活态的情况下,确定所述第一信息请求系统消息块的粒度为系统消息,所述系统消息包括一个或多个系统消息块,其中,所述N大于或等于1。
  102. 根据权利要求83至101中任一项所述的装置,其特征在于,所述第二终端处于空闲态、或非激活态、或连接态。
  103. 一种通信设备,其特征在于,包括:
    处理器、存储器、与终端设备进行通信的接口;
    所述存储器存储计算机执行指令;
    所述处理器执行所述存储器存储的计算机执行指令,使得所述处理器执行如权利要求1至51中任一项所述的通信方法。
  104. 一种计算机可读存储介质,包括计算机程序,当其由一个或多个处理器执行时,使得包括所述处理器的装置执行如权利要求1至51中任一项所述的方法。
  105. 一种计算机程序产品,其特征在于,所述计算机程序产品包括:计算机程序,当所述计算机程序被运行时,使得计算机执行如权利要求1至51中任一项所述的方法。
  106. 一种芯片,其特征在于,包括至少一个处理器和通信接口;
    所述通信接口用于接收输入所述芯片的信号或从所述芯片输出的信号,所述处理器与所述通信接口通信且通过逻辑电路或执行代码指令用于实现如权利要求1至51中任一项所述的方法。
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WO2018170914A1 (zh) * 2017-03-24 2018-09-27 华为技术有限公司 一种系统信息传输方法及装置
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