WO2020061768A1 - 一种数据发送方法、装置和通信系统 - Google Patents

一种数据发送方法、装置和通信系统 Download PDF

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Publication number
WO2020061768A1
WO2020061768A1 PCT/CN2018/107410 CN2018107410W WO2020061768A1 WO 2020061768 A1 WO2020061768 A1 WO 2020061768A1 CN 2018107410 W CN2018107410 W CN 2018107410W WO 2020061768 A1 WO2020061768 A1 WO 2020061768A1
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Prior art keywords
data
terminal device
layer
sending
service
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PCT/CN2018/107410
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English (en)
French (fr)
Inventor
李国荣
纪鹏宇
王昕�
张磊
Original Assignee
富士通株式会社
李国荣
纪鹏宇
王昕�
张磊
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Application filed by 富士通株式会社, 李国荣, 纪鹏宇, 王昕�, 张磊 filed Critical 富士通株式会社
Priority to KR1020217005551A priority Critical patent/KR20210037695A/ko
Priority to EP18935790.8A priority patent/EP3860252A4/en
Priority to PCT/CN2018/107410 priority patent/WO2020061768A1/zh
Priority to CN201880094628.9A priority patent/CN112335304B/zh
Priority to JP2021510020A priority patent/JP7391946B2/ja
Publication of WO2020061768A1 publication Critical patent/WO2020061768A1/zh
Priority to US17/173,136 priority patent/US11700543B2/en
Priority to US18/203,796 priority patent/US20230308936A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/324—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the data link layer [OSI layer 2], e.g. HDLC
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0278—Traffic management, e.g. flow control or congestion control using buffer status reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0252—Traffic management, e.g. flow control or congestion control per individual bearer or channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0252—Traffic management, e.g. flow control or congestion control per individual bearer or channel
    • H04W28/0263—Traffic management, e.g. flow control or congestion control per individual bearer or channel involving mapping traffic to individual bearers or channels, e.g. traffic flow template [TFT]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/121—Wireless traffic scheduling for groups of terminals or users
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present application relates to the field of communications, and in particular, to a method, a device, and a communication system for transmitting data in a vehicle communication (V2X) service.
  • V2X vehicle communication
  • V2X services can include multiple types, such as: Vehicle-to-Vehicle (V2V) communication services, Vehicle-to-Infrastructure (V2I) communication services, Vehicle-to-Pedestrian , V2P) communication services.
  • V2V Vehicle-to-Vehicle
  • V2I Vehicle-to-Infrastructure
  • V2P Vehicle-to-Pedestrian
  • V2X services can be provided through PC5 interface and / or Uu interface.
  • V2X services transmitted through the PC5 interface can be provided by V2X sidelink communication.
  • V2X sidelink communication is a communication mode in which terminal devices can directly communicate with each other through the PC5 interface.
  • the inventor of the present application found that in Long Term Evolution (LTE), the data transmission method of V2X sidelink communication is mainly broadcast in the physical layer (PHY); in New Radio (NR, New Radio) technology, V2X provides Support more usage scenarios, unicast or groupcast transmission may be used in the physical layer; in the prior art, although the physical (PHY) layer of the terminal device may be notified which Sending data to send data.
  • LTE Long Term Evolution
  • NR New Radio
  • V2X provides Support more usage scenarios, unicast or groupcast transmission may be used in the physical layer
  • the physical (PHY) layer of the terminal device may be notified which Sending data to send data.
  • how the other layers of the terminal device need to work so that the physical layer can send data in the corresponding sending mode is still lacking in-depth research in the prior art.
  • the embodiments of the present application provide a data sending method, device, and communication system.
  • At least one service data unit (SDU) corresponding to a service data unit (SDU) included in a protocol data unit (PDU) is used by a media access layer of a terminal device to generate at least One PDU, so that the PDU can correspond to the transmission mode, so it is convenient for the physical layer to send data in the corresponding transmission mode after receiving the PDU (that is, the transmission block).
  • a communication device provided in a terminal device.
  • the communication device includes a first obtaining unit for obtaining or selecting a parameter based on a vehicle communication (V2X) service and communication resource.
  • a communication resource determined by a mapping relationship; and a communication unit that uses the communication resource to send a target V2X service.
  • V2X vehicle communication
  • a communication device which is disposed on a network device.
  • the communication device includes a second obtaining unit that obtains or determines a mapping relationship between a vehicle communication (V2X) service and a communication resource parameter.
  • V2X vehicle communication
  • a communication system includes a terminal device and a network device.
  • the terminal device includes the communication device according to the first aspect of the foregoing embodiment.
  • the network device includes a device such as The communication device according to the second aspect of the above embodiments.
  • the embodiment of the present application has the beneficial effect that the media access layer of the terminal device generates at least one PDU in the same manner as the corresponding transmission mode of the service data unit (SDU) included in a protocol data unit (PDU). It can correspond to the transmission mode, so it is convenient for the physical layer to send data in the corresponding transmission mode.
  • SDU service data unit
  • PDU protocol data unit
  • FIG. 1 is a schematic diagram of a communication system of the present application
  • FIG. 2 is a schematic diagram of a data transmission method for a vehicle communication (V2X) service in Embodiment 1 of the present application;
  • V2X vehicle communication
  • FIG. 3 is a schematic diagram of a part of a terminal device of the present application.
  • FIG. 4 is a schematic diagram of a data sending method according to an implementation manner of Embodiment 2 of this application;
  • FIG. 5 is a schematic diagram of a data sending method in another implementation manner of Embodiment 2 of the present application.
  • FIG. 6 is a schematic diagram of a data transmission device for a car communication service according to Embodiment 3 of the present application.
  • V2X vehicle communication
  • FIG. 8 is a schematic structural diagram of a terminal device according to Embodiment 5 of the present application.
  • FIG. 9 is a schematic structural diagram of a network device according to Embodiment 6 of the present invention.
  • first and second are used to distinguish different elements from each other by title, but they do not indicate the spatial arrangement or chronological order of these elements, and these elements should not be used by these terms. Restricted.
  • the term “and / or” includes any and all combinations of one or more of the associated listed terms.
  • the terms “comprising”, “including”, “having” and the like refer to the presence of stated features, elements, elements or components, but do not exclude the presence or addition of one or more other features, elements, elements or components.
  • the term “communication network” or “wireless communication network” may refer to a network that conforms to any of the following communication standards, such as Long Term Evolution (LTE), Enhanced Long Term Evolution (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed Packet Access (HSPA, High-Speed Packet Access), and so on.
  • LTE Long Term Evolution
  • LTE-A Enhanced Long Term Evolution
  • LTE-A LTE-A
  • WCDMA Wideband Code Division Multiple Access
  • High-Speed Packet Access High-Speed Packet Access
  • HSPA High-Speed Packet Access
  • communication between devices in a communication system may be performed according to a communication protocol at any stage, for example, it may include but is not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and future 5G, New Radio (NR, New Radio), etc., and / or other communication protocols currently known or to be developed in the future.
  • 1G generation
  • 2G 2.5G, 2.75G
  • 5G New Radio
  • NR, New Radio New Radio
  • Network device refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services to the terminal device.
  • Network devices may include, but are not limited to, the following devices: base stations (BS, Base Stations), access points (AP, Access Points), transmission and reception points (TRP, Transmission and Reception Points), broadcast transmitters, and mobile management entities (MME, Mobile Management entity), gateway, server, radio network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller), and so on.
  • BS Base Stations
  • AP access points
  • TRP Transmission and Reception Points
  • MME Mobile Management entity
  • gateway server
  • RNC Radio Network Controller
  • BSC Base Station Controller
  • the base station may include, but is not limited to, Node B (NodeB or NB), evolved Node B (eNodeB or eNB), 5G base station (gNB), and so on. In addition, it may include a remote radio head (RRH, Remote Radio Head). , Remote radio unit (RRU, Remote Radio Unit), relay (relay) or low-power node (such as femto, pico, etc.). And the term “base station” may include some or all of their functions, and each base station may provide communication coverage for a particular geographic area.
  • the term "cell” may refer to a base station and / or its coverage area, depending on the context in which the term is used.
  • the term “User Equipment” (UE) or “Terminal Equipment” (TE) refers to a device that accesses a communication network through a network device and receives network services.
  • the terminal device may be fixed or mobile, and may also be called a mobile station (MS, Mobile Station), a terminal, a subscriber station (SS, Subscriber Station), an access terminal (AT, Access Terminal), a station, and so on.
  • the terminal device may include, but is not limited to, the following devices: Cellular Phone, Personal Digital Assistant (PDA, Personal Digital Assistant), wireless modem, wireless communication device, handheld device, machine-type communication device, laptop computer, Cordless phones, smartphones, smart watches, digital cameras, and more.
  • PDA Personal Digital Assistant
  • wireless modem wireless communication device
  • handheld device machine-type communication device
  • laptop computer machine-type communication device
  • Cordless phones smartphones, smart watches, digital cameras, and more.
  • the terminal device may also be a machine or device that performs monitoring or measurement.
  • the terminal device may include, but is not limited to, a Machine Type Communication (MTC) terminal, Vehicle communication terminals, device-to-device (D2D) terminals, machine-to-machine (M2M) terminals, and so on.
  • MTC Machine Type Communication
  • D2D device-to-device
  • M2M machine-to-machine
  • FIG. 1 is a schematic diagram of a communication system of the present application, and schematically illustrates a case where a terminal device and a network device are taken as an example.
  • the communication system 100 may include a network device 101 and a plurality of terminal devices 102.
  • the plurality of terminal devices are, for example, a terminal device 1021, a terminal device 1022, a terminal device 1023, and a terminal device 1024.
  • the network device 101 and the terminal device 102 may perform an existing service or a service that can be implemented in the future.
  • these services include, but are not limited to: enhanced mobile broadband (eMBB), large-scale machine type communication (mMTC, massive Machine Type Communication), and high-reliability low-latency communication (URLLC, Ultra-Reliable and Low-Low- Latency Communication), and so on.
  • eMBB enhanced mobile broadband
  • mMTC large-scale machine type communication
  • URLLC Ultra-Reliable and Low-Low- Latency Communication
  • the terminal device 102 may send data to the network device 101 and receive feedback information from the network device 101.
  • the network device 101 may also send data to one or more terminal devices 102 and receive feedback sent by the terminal device 102.
  • the terminal device 102 may send V2X service related messages to one or more other terminal devices 102, or the terminal device 102 may receive V2X service related messages from other terminal devices 102.
  • the terminal device 1021 sends a V2X service-related message to the terminal device 1022, or the terminal device 1021 receives a V2X service-related message from the terminal device 1022; for another example, the terminal device 1021 sends a terminal device 1022, a terminal device 1023, and a terminal device 1024 V2X service related messages.
  • the following description uses a terminal device in a communication system as a sending end and a terminal device as a receiving end as an example for description, but this application is not limited thereto, and the sending end and / or the receiving end may also be other devices.
  • this application is not only applicable to signal transmission between two terminal devices, but also applicable to signal transmission between a network device and a terminal device.
  • Embodiment 1 of the present application provides a communication method, and the method may be executed by a terminal device.
  • FIG. 2 is a schematic diagram of a data transmission method for a vehicle communication (V2X) service in this embodiment. As shown in FIG. 2, the method includes:
  • Step 201 A media access control (MAC) layer of a terminal device generates at least one PDU in the same manner as a corresponding transmission mode of a service data unit (SDU) included in a protocol data unit (PDU);
  • SDU service data unit
  • PDU protocol data unit
  • Step 202 The MAC layer sends the PDU to a physical layer of the terminal device, and notifies the physical layer of the sending method corresponding to the PDU.
  • the media access layer of the terminal device generates at least one PDU in the same manner as the transmission mode corresponding to the service data unit (SDU) included in a protocol data unit (PDU). Therefore, the PDU can be the same as the transmission mode Correspondence, therefore, it is convenient for the physical layer to send data in a corresponding transmission mode.
  • SDU service data unit
  • PDU protocol data unit
  • the SDU in a PDU corresponds to the same sending mode.
  • the physical layer receives the PDU (and is instructed to send the corresponding PDU.
  • the physical layer can process the PDU to generate data to be sent.
  • the data corresponds to the transmission mode, that is, the data to be transmitted can be transmitted in the transmission mode.
  • the PDU received by the physical layer is also called a transport block (TB).
  • the transmission method includes broadcast, unicast, or groupcast.
  • data can be transferred between a terminal device and a roadside unit (RSU, roadside unit) or between two terminal devices, and the data can be transferred through unicast; for example, terminal devices located close to each other can form a group, such as a fleet
  • RSU roadside unit
  • the terminal device can send data to group members through multicast.
  • the method may further include:
  • Step 203 The terminal device determines or sets the sending mode.
  • the SDU included in the PDU generated by the media access control (MAC) layer of the terminal device can correspond to the transmission method determined or set in step 203.
  • the upper layer of the terminal device determines the sending method; or, in another embodiment, the access (AS) layer of the terminal device determines the sending method; or, In another embodiment, the terminal device may set the sending method according to the instruction information used to configure or instruct the sending method.
  • step 203 Each of the above-mentioned embodiments in step 203 will be described below.
  • Embodiment 1 The upper layer of the terminal device determines the transmission method.
  • the upper layer of the terminal device refers to a V2X application layer or a non-access (NAS) layer.
  • NAS non-access
  • Embodiment 1 there may be two methods for the upper layer of the terminal device to determine the transmission method.
  • method 1 is to instruct the upper layer of the terminal device for the data packet (data packet (s)) of the V2X service and the corresponding transmission method of the data packet for the V2X service;
  • method 2 is to use the non-access ( The packet filtering unit (NAS) layer of the NAS determines the transmission mode corresponding to the data in the quality of service flow.
  • the packet filtering unit (NAS) layer of the NAS determines the transmission mode corresponding to the data in the quality of service flow.
  • FIG. 3 is a schematic diagram of a part of a terminal device, where 301 and 302 are optional. In the following, how a corresponding part of the terminal device in Embodiment 1 works will be described with reference to FIG. 3.
  • the upper layer of the terminal device indicates the data packet (data packet (s)) of the V2X service and the corresponding sending mode of the data packet of the V2X service.
  • the sending method may be indicated to a packet filtering unit (packet filter), and / or a Service Data Adaptation Protocol (SDAP) layer, and / or a packet data convergence protocol (PDCP) layer.
  • packet filter packet filtering unit
  • SDAP Service Data Adaptation Protocol
  • PDCP packet data convergence protocol
  • the packet filtering unit of the terminal device may map the data packet to a quality of service flow (QoS) flow according to the instructed sending mode.
  • QoS quality of service flow
  • the corresponding sending mode of the data packets in one quality of service flow is the same.
  • the packet filtering unit 301 of the terminal device may map the data packet to a quality of service flow (QoS flow (s)) according to the data packet and the sending method indicated by the upper layer, where:
  • QoS flow (s) quality of service flow
  • the corresponding sending modes of the data packets in a QoS flow are the same. Therefore, there is a corresponding relationship between the quality of service flow and the sending mode.
  • the packet filtering unit 301 may also mark the sending mode of the quality of service flow.
  • Step 1.2 The service data adaptation protocol (SDAP) layer 302 of the terminal device can map QoS flows to the data radio bearer (DRB), and the mapping result can be: the quality of service flow on a DRB corresponds to the same sending method. Therefore, DRB corresponds to the transmission method.
  • SDAP service data adaptation protocol
  • Step 1.3 The packet data convergence protocol (PDCP) layer 303 of the terminal device can map QoS flows to the data radio bearer (DRB). Among them, the quality of service flow on a DRB corresponds to the same sending mode. Therefore, the DRB is the same as the sending mode. correspond. It should be noted that since the SDAP layer 302 is optional, the above step 1.2 is also optional. In the case of step 1.2, the SDAP layer 302 maps QoS flows to DRB, so it may not have step 1.3; without step 1.2, there may be step 1.3, and the PDCP layer 303 maps QoS flows to DRB.
  • DRB data radio bearer
  • Step 1.4 The data in the data radio bearer (DRB) is sent to the radio link control (RLC) layer 304 through the corresponding radio link control (RLC) channel, and sent to the media access control through the corresponding logical channel (LCH). (MAC) layer 305.
  • the SDU of the MAC layer 305 comes from a logical channel (LCH).
  • the data radio bearer (DRB) corresponds to the logical channel (LCH), so the logical channel (LCH) corresponds to the transmission mode, and the SDU from the MAC layer 305 of the logical channel also corresponds to the transmission mode.
  • the MAC layer 305 can perform PDU assembly according to the transmission mode corresponding to the SDU, so that the transmission modes corresponding to the SDU included in the PDU are the same, as shown in step 201 in FIG. 2.
  • the MAC layer 305 may also send a PDU (that is, a transmission block) to the physical layer 306, and notify the physical layer 306 of a transmission method corresponding to the PDU (that is, a transmission block).
  • the upper layer of the terminal device indicates that the data packet of the V2X service, packet 1/2/3/4, is unicast transmission, and packet 5/6 is multicast transmission.
  • packet filtering unit (packet filter) 301 you can map packet 1/2 to QoS flow1 (the corresponding transmission method is unicast), map packet 3 to QoS flow2 (the corresponding transmission method is unicast), and packet 4 Map to QoS flow3 (the corresponding sending method is unicast), and map packet 5/6 to QoS flow 4 (the corresponding sending method is multicast).
  • QoS flow 1/2 can be mapped to the data radio bearer DRB1 (the corresponding transmission method is unicast), QoS flow3 is mapped to DRB2 (the corresponding transmission method is unicast), and QoS flow 4 is mapped to DRB3 (the corresponding transmission method is multicast).
  • DRB1 the corresponding transmission method is unicast
  • DRB2 the corresponding transmission method is unicast
  • QoS flow 4 is mapped to DRB3 (the corresponding transmission method is multicast).
  • the sending modes corresponding to the logical channels corresponding to DRB1, DRB2, and DRB3 are unicast, unicast, and multicast, respectively.
  • the MAC layer 305 performs logical channel priority processing, and the generated MAC PDU includes data of the logical channels corresponding to DRB1 and DRB2, that is, the MAC SDU comes from the logical channel corresponding to DRB1 and DRB2 (the corresponding sending method is unicast).
  • the sending method corresponding to the MAC PDU is unicast; or the generated MAC PDU includes the data of the logical channel corresponding to DRB3, that is, the MAC SDU comes from the logical channel corresponding to DRB3 (the corresponding sending method is multicast).
  • the MAC The corresponding transmission mode of PDU is multicast.
  • the MAC layer 305 notifies the physical layer 306 of the transmission method corresponding to the MAC PDU, and sends the MAC PDU to the physical layer 306 for subsequent processing of the physical layer 306.
  • the physical layer 306 processes the MAC PDU to generate a pending transmission.
  • the data to be transmitted corresponds to the transmission mode, that is, the data to be transmitted can be transmitted in the transmission mode.
  • the service data adaptation protocol (SDAP) layer maps the quality of service flow or the data packet of the V2X service to the data radio bearer (DRB) according to the indicated transmission method, Among them, the quality of service flow or data packet of the V2X service on a DRB corresponds to the same sending mode.
  • SDAP service data adaptation protocol
  • the processing of the PDCP layer 303, the RLC layer 304, and the MAC layer 305 reference may be made to the description of step 1.3, step 1.4, and step 1.5 described above.
  • the packet data convergence protocol (PDCP) layer maps the quality of service flow or the data packet of the V2X service according to the instructed transmission mode To a data radio bearer (DRB), in which a quality of service flow on a DRB or a data packet corresponding to a V2X service is transmitted in the same manner.
  • DRB data radio bearer
  • a packet filter unit 301 of a non-access (NAS) layer of the terminal device determines a transmission method corresponding to data in a quality of service flow.
  • NAS non-access
  • the packet filtering unit (packet filter) of the terminal device maps the data packets of the V2X service to the quality of service flow (QoS flow). Among them, the data packet corresponding to a quality of service flow is sent in the same way, and the packet filtering unit determines The sending mode corresponding to a quality of service flow. In addition, the packet filtering unit may notify the SDAP of the sending method. In addition, for the processing of the SDAP layer 302, the PDCP layer 303, the RLC layer 304, and the MAC layer 305, reference may be made to the description of steps 1.2, 1.3, 1.4, and 1.5 described above.
  • Embodiment 2 The access layer of the terminal device determines the sending mode.
  • the access (AS) layer of the terminal device may include an SDAP layer 302, a PDCP layer 303, an RLC layer 304, and a MAC layer 305.
  • the SDAP layer 302, the PDCP layer 303, the RLC layer 304, or the MAC layer 305 may determine the transmission method.
  • the Service Data Adaptive Protocol (SDAP) layer can determine the sending mode corresponding to the QoS flow or V2X service data packet, and map the QoS flow or the V2X service data packet.
  • DRB Data Radio Bearer
  • the QoS flow or the data packet of the V2X service on one DRB corresponds to the same sending mode
  • SDAP Service Data Adaptive Protocol
  • the data packet of the V2X service is mapped to a data radio bearer (DRB), and the sending mode corresponding to the DRB is determined.
  • the data packet (s) of the V2X service is mapped to QoS flows by the packet filter layer 301.
  • the SDAP layer 302 determines the sending method corresponding to the QoS flow and maps the QoS flow to the DRB, so that the sending method corresponding to the QoS flow corresponding to one DRB is the same; or the SDAP layer 302 maps the QoS flow to the DRB, and, The SDAP layer determines the sending method corresponding to the DRB.
  • the processing of the PDCP layer 303, the RLC layer 304, and the MAC layer 305 reference may be made to the description of step 1.3, step 1.4, and step 1.5 described above.
  • the packet data convergence protocol (PDCP) layer determines the transmission method corresponding to the DRB or the radio link control channel (RLC channel) corresponding to the DRB or the logical channel corresponding to the DRB.
  • PDCP packet data convergence protocol
  • RLC channel radio link control channel
  • the data packet (s) of the V2X service is mapped by the packet filter layer 301 to QoS flows
  • the SDAP layer 302 maps the QoS flows to the DRB
  • the PDCP layer 303 determines the DRB corresponding transmission method or the DRB corresponding RLC channel or DRB corresponding logic The transmission method corresponding to the channel.
  • the processing of the RLC layer 304 and the MAC layer 305 reference may be made to the description of steps 1.4 and 1.5 described above.
  • the radio link control (RLC) layer 304 determines the transmission method corresponding to the radio link control channel (RLC channel) or the transmission method corresponding to the logical channel.
  • the data packet (s) of the V2X service is mapped by the packet filter layer 301 to QoS flows, the SDAP layer 302 maps the QoS flows to the DRB, and the RLC layer 304 determines the transmission method corresponding to the RLC channel corresponding to the DRB or the transmission corresponding to the logical channel. the way.
  • the processing of the MAC layer 305 reference may be made to the description of step 1.5 above.
  • the media access control (MAC) layer 305 determines the transmission method corresponding to the logical channel or the MAC PDU.
  • the data packet (s) of the V2X service is mapped by the packet filter layer 301 to QoS flows, and the SDAP layer 302 maps the QoS flow to the DRB.
  • the data of the logical channel corresponding to the DRB is sent to the MAC layer as the MAC SDU, and the MAC passes the logical channel.
  • Priority processing generating MAC PDU including MAC SDU.
  • the MAC layer 305 decides to determine a transmission method corresponding to a logical channel or a transmission method corresponding to a MAC PDU.
  • the MAC layer 305 may notify the physical layer 306 of the MAC PDU and its corresponding transmission mode.
  • the terminal device determines the sending mode, and each layer of the terminal device can learn the sending mode by at least one method.
  • the method for obtaining the transmission method may be: the higher layer of the terminal device notifies the lower layer of the transmission method, for example, the SDAP layer notifies the PDCP layer of the DRB corresponding transmission method, and / or the PDCP layer notifies RLC
  • the layer sends a corresponding transmission method about the RLC channel, and / or the RLC notifies the MAC about the transmission method of the logical channel.
  • it can also notify across layers.
  • the PDCP layer directly informs the MAC layer about the transmission method of the logical channel.
  • the method for knowing the sending method may be: a terminal device responds to a V2X service data packet, and / or a quality of service flow (QoS flow), and / or a data radio bearer (DRB), and / or a wireless link Control (RLC) channel and / or logical channel corresponding transmission mode is marked, for example, V2X service data packet and / or quality of service flow and / or data radio bearer transmission mode is marked, and each layer reads flow / DRB / RLC / The transmission method of the logical channel.
  • QoS flow quality of service flow
  • DRB data radio bearer
  • RLC wireless link Control
  • the terminal device determines the sending method. Therefore, the terminal device can notify the network device of the sending method, thereby facilitating the network device to allocate appropriate sidelink resources to send data. For example, when When a terminal device handles network coverage, it is convenient for the network device to allocate appropriate sidelink resources to send data.
  • the terminal device can notify the network device of the sending method through the radio resource control (RRC) message of the side link terminal information (sidelink UE information) or the side link cache status report (BSR), or schedule A request (Scheduling request, SR) notifies the network device of the sending method.
  • RRC radio resource control
  • BSR side link cache status report
  • SR schedule A request
  • the RRC message when a terminal device notifies a network device of an RRC message through a sidelink terminal UE information (sidelink UE information), the RRC message includes the UE's V2X service, and / or QoS flow, and / or DRB. , And / or the corresponding transmission mode of the logical channel;
  • the BSR includes the transmission mode corresponding to the logical channel and / or the logical channel group;
  • the SR When the terminal device notifies the network device of the transmission method through the SR, the SR includes the transmission method corresponding to the logical channel corresponding to the SR, or the SR includes the logical channel identifier and the transmission method corresponding to the logical channel.
  • the network device when the network device receives the sending mode notification message of the terminal device, it can allocate a sidelink resource pool (sidelink resource pool) and / or sidelink scheduling grant (sidelink grant) suitable for the sending mode to the UE.
  • a sidelink resource pool sidelink resource pool
  • sidelink scheduling grant sidelink grant
  • Embodiment 3 The terminal device sets the transmission method according to the instruction information used to configure or instruct the transmission method.
  • the instruction information may be provided by a network device, and the network device may be a network device of a core network or a network device of an access network; the instruction information may also be pre-configured to the terminal device; moreover, the The indication information may also be provided by the roadside unit (RSU) for the terminal device.
  • RSU roadside unit
  • the terminal device may receive the indication information through dedicated RRC signaling or system information.
  • the instruction information provided by the network equipment of the core network can be used to configure the sending method corresponding to data packets and / or QoS flows on the side link.
  • the indication information includes the configuration of the sending method of the data packets of the V2X service on one or more side links (for example, indicating the sending mode of the V2X service type), or includes the sending method of one or more QoS flows.
  • Configuration this configuration includes QoS flow ID and its corresponding sending method).
  • the terminal device when the terminal device is within the coverage of the network device of the core network, after receiving the instruction information, the terminal device can configure the sending method corresponding to data packets and / or QoS flows on the side link according to the instruction information.
  • the behavior of each layer of the terminal device can refer to the description in Embodiment 1.
  • the terminal device may receive the indication information through dedicated RRC signaling or system information or MAC control signaling or physical layer control signaling. .
  • the indication information can be used to configure a transmission mode corresponding to a DRB, and / or RLC channel, and / or a logical channel on the side link.
  • the indication information includes a DRB identifier (ID) and / or an RLC channel identifier and / or a logical channel identifier on a side link and a corresponding sending method.
  • the terminal device can configure the DRB, and / or RLC channel, and / or logic on the side link according to the instruction information.
  • the channel transmission mode After the transmission mode is set, the behavior of each layer of the terminal device can refer to the description in Embodiment 2.
  • the indication information can be used to configure a sending mode corresponding to a logical channel or a logical channel group on the side link.
  • the instruction information includes a logical channel identifier or a logical channel group identifier on the side link and the corresponding sending method, or the instruction information includes a bitmap file (bitmap) for indicating to the terminal device which logical channels or logics are included in the MAC CE.
  • bitmap bitmap file
  • the instruction information may also include a transmission mode corresponding to the scheduled side link data, for example, a transmission corresponding to a scheduled side link MAC PDU (that is, a transmission block). the way.
  • the indication information may be included in downlink control information (DCI), such as a sidelink grant.
  • DCI downlink control information
  • the indication information may indicate the side link data scheduled this time or N (N is a positive integer).
  • the terminal device can set the side link to be sent this time or N times according to the instruction information
  • the corresponding transmission method of data is broadcast, multicast or unicast.
  • the corresponding transmission method of the side link MAC PDU (ie, transmission block) to be transmitted this time or N times is broadcast, multicast or unicast.
  • N times means this time and the next times this time.
  • the pre-configured indication information may be used to configure a transmission manner corresponding to data packets, and / or QoS flows, and / or DRB, and / or RLC channels, and / or logical channels on the side link.
  • the terminal device configures the sending mode of the DRB, and / or RLC channel, and / or logical channel on the side link according to the pre-configured instruction information.
  • the behavior of each layer of the terminal device can be See the description in Embodiment 1 or 2.
  • step 203 of this embodiment according to the first embodiment and the second embodiment, the upper layer or the access layer of the terminal device determines the transmission method.
  • the basis for determining the transmission method by the terminal device in the first and second embodiments will be described.
  • the upper layer or access layer of the terminal device may be based on the QoS characteristics and / or QoS level indication of the data to be sent, and / or the destination terminal device to which the data is to be sent, and / or The content of the information and / or the geographical location of the terminal device determine the corresponding transmission method of the data.
  • the QoS characteristics include: data priority, and / or data delay, and / or data reliability, and / or data data rate, and / or data communication range.
  • the sending method of high-priority data with a priority higher than the first threshold may be unicast or multicast, and the sending method of low-priority with a priority lower than the second threshold may be broadcast; the delay requirement is higher than the first
  • the data transmission method required for the three thresholds with high latency can be unicast or multicast, and the data transmission method required for the relaxed delays below the fourth threshold can be broadcast; the reliability requirements are higher than the fifth threshold
  • the method for sending data with high reliability requirements can be unicast or multicast, and the method for sending data with low reliability requirements below the sixth threshold can be broadcast; high data with data rates above the seventh threshold
  • the transmission method of the data of the rate can be broadcast, and the transmission method of the data of the low data rate with the data rate higher than the eighth threshold can be unicast; the transmission method of the data of the small communication range with the communication range smaller than the ninth threshold can be unicast
  • the method for sending data in a large communication range with a communication range greater than the tenth threshold may be multicast
  • the QoS level indication of the data may correspond to the value of two or more QoS characteristics.
  • the level indication corresponds to the respective first values of multiple QoS characteristics
  • the QoS level indication For another level, the level indicates a second value corresponding to each of the multiple QoS characteristics.
  • a QoS characteristic includes: the priority of data, or the delay of data, or the reliability of data, or the data rate of data, or the communication range of data.
  • the sending mode of the data is determined based on the destination terminal device to which the data to be sent is sent. For example, in the group, the terminal device that is a member of the group sends to other terminal devices that are other members of the group.
  • the data can be sent in multicast mode, the data sent to the specific terminal device as a group member or the terminal device as the group head is sent in unicast mode, and the data sent to terminal devices in and outside the group can be sent in broadcast mode .
  • the content of the information contained in the data includes: road conditions, and / or environment, and / or accident information; or, including service requests, and / or feedback; or, group public information.
  • the method of sending data is determined based on the content of the information contained in the data. For example, the method of sending data including road conditions, environment, and accidents can be broadcast; the method of sending data including service requests and feedback can be Unicast; the method for sending data containing group public information may be multicast, where group public information may be, for example, group security information and / or fleet notification information.
  • the transmission method corresponding to the data is determined based on the geographical position of the terminal device. For example, when the geographical position of the terminal device is in area A, the data transmission method may be multicast. When the geographical location is in the area B, the data may be sent in a unicast mode.
  • an appropriate unicast, multicast, or broadcast transmission method can be used according to the characteristics of the data to be transmitted, which is conducive to data transmission meeting its QoS or being sent to a specific destination, while ensuring a high Wireless resource utilization.
  • the transmission method indicated by the instruction information may also be determined based on the foregoing basis.
  • the network equipment of the core network, the network equipment of the access network, or the roadside unit is based on the QoS characteristics of the data to be sent, and / or the QoS level indication, and / or the destination terminal device to which the data is to be sent, and / or the data
  • the content of the information contained in it and / or the geographical location of the terminal device to determine the sending method corresponding to the data to be sent, and indicating the sending method to the terminal device through the instruction information; or in the instruction information pre-configured to the terminal device ,
  • the QoS characteristics of the data to be sent, and / or the QoS level indication, and / or the destination terminal device to which the data will be sent and / or the content of the information contained in the data, and / or the geographical location of the
  • the media access layer of the terminal device generates at least one PDU in the same manner as the transmission mode corresponding to the service data unit (SDU) included in a protocol data unit (PDU). Therefore, the PDU can be the same as the transmission mode Correspondingly, it is convenient for the physical layer to send data in a corresponding sending mode.
  • the terminal device determines or sets the sending mode according to the instruction information, and each layer of the terminal device performs corresponding processing, which is simple to implement. .
  • This embodiment 2 provides a data sending method, which is executed by a network device.
  • FIG. 4 is a schematic diagram of a data sending method in an embodiment of Embodiment 2 of the present application.
  • This embodiment of Embodiment 2 corresponds to Embodiment 3 of step 203 of Embodiment 1.
  • the method includes:
  • Step 401 The network device generates instruction information for configuring or indicating a data transmission mode of the terminal device.
  • Step 402 The network device sends the instruction information to the terminal device.
  • the sending method includes unicast, multicast, or broadcast.
  • the network device may be a network device of a core network or a network device of an access network.
  • the instruction information sent by the network device is used to configure a sending method corresponding to data packets and / or QoS flows on a side link of the terminal device.
  • the instruction information sent by the network device of the access network is used to configure a DRB, and / or RLC channel on a side link of the terminal device, and / Or logical channel transmission.
  • the indication information sent by the network device of the access network may also include a sending mode corresponding to the scheduled side link data.
  • the network device configures or instructs the terminal device to send data when the vehicle communication service is performed.
  • the terminal device can set a transmission method according to the instruction information, and send the vehicle communication service according to the set transmission method. data.
  • FIG. 5 is a schematic diagram of a data sending method in another embodiment of Embodiment 2 of the present application, and the other embodiment corresponds to Embodiment 1 and Embodiment 2 of step 203 of Embodiment 1. As shown in Figure 5, the method includes:
  • Step 501 The network device receives a notification of a data transmission mode of the terminal device sent by the terminal device.
  • the network device may pass a radio resource control (RRC) message of side link terminal equipment information (side link, UE information), or a side link cache status report (BSR), or a scheduling request (Scheduling).
  • RRC radio resource control
  • BSR side link cache status report
  • Scheduling scheduling request
  • the sending method may be based on the QoS characteristics of the data to be sent, and / Or a QoS level indication, and / or a destination terminal device to which the data is to be sent, and / or the content of the information contained in the data, and / or the geographic location of the terminal device.
  • the QoS characteristics include: the priority of the data, and / or the delay of the data, and / or the reliability of the data, and / or the data rate of the data, and / or the communication range of the data; the content of the information contained in the data Including: road conditions, and / or environment, and / or accident information; or, including business requests, and / or feedback; or, group public information.
  • step 501 may also be combined with FIG. 4, that is, the method in FIG. 4 may include steps 401, 402, and 501.
  • the physical layer it is convenient for the physical layer to send data in a corresponding sending mode; in addition, it is possible to use a suitable unicast, multicast, or broadcast sending mode according to the characteristics of the data to be sent, which is conducive to data transmission meeting its QoS or being Send to a specific destination while ensuring high wireless resource utilization.
  • the third embodiment provides a data transmitting device for an automobile communication service, which is provided in a terminal device. Since the principle of the device to solve the problem is similar to the method of Embodiment 1, its specific implementation can refer to the implementation of the method of Embodiment 1, and the same content will not be described repeatedly.
  • FIG. 6 is a schematic diagram of a data transmission device for an automobile communication service according to Embodiment 3. As shown in FIG. 6, the device 600 includes:
  • a first generating unit 601 is provided at a media access control (MAC) layer of the terminal device, and the generating unit uses the same sending method corresponding to a service data unit (SDU) included in a protocol data unit (PDU). Generating at least one PDU; and
  • SDU service data unit
  • PDU protocol data unit
  • a first sending unit 602 is provided in the MAC layer, and is configured to send the PDU to a physical layer of the terminal device, and notify the physical layer of the sending method corresponding to the PDU.
  • the sending method includes unicast, multicast, or broadcast.
  • the apparatus 600 further includes:
  • the first determining unit 603 is disposed on an upper layer of the terminal device, and is configured to determine a sending mode.
  • the first decision unit 603 instructs a data packet (s) of a V2X service and a transmission method corresponding to the data packet of the V2X service.
  • the device 600 further includes:
  • a first mapping unit 604 which is provided in a packet filtering unit of the terminal device, and the first mapping unit maps the data packet to a quality of service flow (QoS) flow, where one quality of service flow is The corresponding data packets are sent in the same way.
  • QoS quality of service flow
  • the device 600 further includes:
  • a second mapping unit 605 which is provided at a service data adaptation protocol (SDAP) layer of the terminal device, and maps a quality of service flow or a data packet of the V2X service to a data radio bearer (DRB)
  • SDAP service data adaptation protocol
  • DRB data radio bearer
  • the device 600 further includes:
  • the first determination unit 603 is provided in the packet filtering unit.
  • a packet filtering unit maps a data packet to a quality of service flow (QoS) flow, in which a data packet corresponding to a quality of service flow is transmitted in the same manner, and the transmission method corresponding to the quality of service flow is determined by The first decision unit decides.
  • QoS quality of service flow
  • the device 600 further includes:
  • a second determining unit 607 is provided in an access (AS) layer of the terminal device, and is configured to determine the sending mode.
  • the second decision unit 607 is set at a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, or a media access control (MAC) layer of the terminal device. Layer, and the second decision unit determines the transmission method.
  • SDAP service data adaptation protocol
  • PDCP packet data convergence protocol
  • RLC radio link control
  • MAC media access control
  • the second decision unit 607 is set at the Service Data Adaptive Protocol (SDAP) layer, the second decision unit determines the sending method corresponding to the data packet of the QoS flow or V2X service, and the service The data adaptation protocol (SDAP) layer maps the data packets of the QoS flow or the V2X service to a data radio bearer (DRB), where the data packets of the QoS flow or the V2X service on a DRB correspond to The sending method is the same; or the service data adaptation protocol (SDAP) layer maps the QoS flow or the data packet of the V2X service to a data radio bearer (DRB), and the second decision unit determines the DRB correspondence The way of sending.
  • SDAP Service Data Adaptive Protocol
  • the second determining unit 607 is disposed at the packet data convergence protocol (PDCP) layer, and is configured to determine the sending method corresponding to the DRB and the radio link control channel (RLC) channel corresponding to the DRB.
  • the second determination unit 607 is disposed in the radio link control (RLC) layer and is configured to determine the transmission mode corresponding to a radio link control channel (RLC channel) or the transmission mode corresponding to a logical channel. .
  • RLC radio link control
  • the second determination unit 607 is disposed in the media access control (MAC) layer, and is configured to determine the transmission method corresponding to a logical channel or the transmission method corresponding to a MAC PDU.
  • MAC media access control
  • the device 600 further includes:
  • a second sending unit 608 which is provided at a higher layer of the terminal device, and is used to notify the lower layer of the sending method; or, a marking unit 609, which is used for data packets of the V2X service, and / or the quality of service Flow (QoS) flow, and / or data radio bearer (DRB), and / or radio link control (RLC) channel, and / or logical channel corresponding transmission methods are marked.
  • QoS quality of service Flow
  • DRB data radio bearer
  • RLC radio link control
  • the device 600 further includes:
  • the first notification unit 610 is configured to notify a network device of the sending method.
  • the first notification unit 610 uses a radio resource control (RRC) message of side link terminal equipment information (side link, UE information), a side link cache status report (BSR), or a scheduling request (Scheduling request).
  • RRC radio resource control
  • BSR side link cache status report
  • Scheduling request scheduling request
  • the device 600 further includes:
  • the first setting unit 611 sets the sending method according to the instruction information for configuring or indicating the sending method, where the instruction information is provided by a network device of a core network or a network of an access network
  • the equipment is provided either by a roadside unit (RSU) or pre-configured.
  • the instruction information provided by the network device of the core network is used to configure the corresponding sending method of data packets and / or QoS flows on the side link;
  • the instruction information provided by the network device of the access network is used to configure the DRB on the side link And / or an RLC channel and / or a logical channel corresponding transmission mode;
  • the indication information provided by the network device of the access network includes a scheduled transmission mode of the side link data.
  • the pre-configured indication information is used to configure a transmission method corresponding to data packets, and / or QoS flows, and / or DRB, and / or RLC channels, and / or logical channels on the side link.
  • the sending method is based on the QoS characteristics of the data to be sent, and / or the QoS level indication, and / or the destination terminal device to which the data is to be sent, and / or the content of the information contained in the data And / or the geographical location of the terminal device.
  • the QoS characteristics include: the priority of the data, and / or the delay of the data, and / or the reliability of the data, and / or the data rate of the data, and / or the communication range of the data; the information contained in the data
  • the content includes: road conditions, and / or environment, and / or accident information; or, including business requests, and / or feedback; or, group public information.
  • the media access layer of the terminal device generates at least one PDU in the same manner as the transmission mode corresponding to the service data unit (SDU) included in a protocol data unit (PDU). Therefore, the PDU can be the same as the transmission mode Correspondingly, it is convenient for the physical layer to send data in a corresponding sending mode.
  • the terminal device determines or sets the sending mode according to the instruction information, and each layer of the terminal device performs corresponding processing, which is simple to implement. .
  • the fourth embodiment provides a data transmission device for a vehicle communication (V2X) service, which is installed in a network device. Since the principle of the device to solve the problem is similar to the method of Embodiment 2, its specific implementation can refer to the implementation of the method of Embodiment 2, and the same content is not described repeatedly.
  • V2X vehicle communication
  • FIG. 7 is a schematic diagram of a data transmission device for a vehicle communication (V2X) service according to the fourth embodiment. As shown in FIG. 7, the apparatus 700 includes:
  • a second generation unit 701 which generates instruction information for configuring or indicating a transmission manner of data of the terminal device.
  • the third sending unit 702 is configured to send the instruction information to the terminal device.
  • the network device is a network device of a core network or a network device of an access network.
  • the indication information is used to configure a sending manner of data packets and / or QoS flows on an edge link.
  • the indication information is used to configure a sending mode of a DRB, an RLC channel, and / or a logical channel on a side link.
  • the apparatus 700 may further include:
  • the first receiving unit 703 receives a notification of a data transmission mode of the terminal device sent by the terminal device.
  • the first receiving unit transmits a radio resource control (RRC) message of a side link terminal equipment information (side link UE information), or a side link cache status report (BSR), or a scheduling request (SR). ) Receive the notification.
  • RRC radio resource control
  • the sending method is based on the QoS characteristics and / or QoS level indication of the data to be sent, and / or the destination terminal device to which the data is to be sent, and / or the content of the information contained in the data, and / or The geographical location of the terminal device is determined.
  • the QoS characteristics include: data priority, and / or data delay, and / or data reliability, and / or data data rate, and / or data communication range;
  • the content of the information contained in the data includes: road conditions, and / or environment, and / or accident information; or, including business requests, and / or feedback; or, group public information.
  • the device 700 in this embodiment may include only the first receiving unit 703.
  • the physical layer it is convenient for the physical layer to send data in a corresponding sending mode; in addition, it is possible to use a suitable unicast, multicast, or broadcast sending mode according to the characteristics of the data to be sent, which is beneficial to data transmission that meets its QoS or Send to a specific destination while ensuring high wireless resource utilization.
  • This embodiment 5 provides a terminal device. Since the principle of the device to solve the problem is similar to the method of embodiment 1, its specific implementation can be implemented by referring to the method of embodiment 1. The same content is not described repeatedly.
  • FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • the terminal device 800 may include a central processing unit (CPU) 801 and a memory 802; the memory 802 is coupled to the central processing unit 801.
  • the memory 802 can store various data; in addition, a program for data processing is stored, and the program is executed under the control of the central processing unit 801 to instruct the terminal device according to the received signaling.
  • the functions of the apparatus 600 of Embodiment 3 may be integrated into the central processing unit 801 of the terminal device 800.
  • the central processing unit 801 may be configured to implement a data transmission method for a vehicle communication (V2X) service described in Embodiment 1.
  • V2X vehicle communication
  • the central processing unit 801 may be configured to control the terminal device 800 to execute the method of the first embodiment.
  • the above device 600 may be configured separately from the central processing unit 801.
  • the device 600 may be configured as a chip connected to the central processing unit 801, such as a unit shown in FIG. Control to implement the function of the device 600.
  • the media access layer of the terminal device generates at least one PDU in the same manner as the transmission mode corresponding to the service data unit (SDU) included in a protocol data unit (PDU). Therefore, the PDU can be the same as the transmission mode Correspondingly, it is convenient for the physical layer to send data in a corresponding sending mode.
  • the terminal device determines or sets the sending mode according to the instruction information, and each layer of the terminal device performs corresponding processing, which is simple to implement. .
  • This embodiment 6 provides a network device.
  • the principle of the device to solve the problem is similar to the method of embodiment 2. Therefore, the specific implementation thereof can be implemented by referring to the method of embodiment 2. The same content is not described repeatedly.
  • FIG. 9 is a schematic structural diagram of a network device according to an embodiment of the present invention.
  • the network device 900 may include a central processing unit (CPU) 901 and a memory 902; the memory 902 is coupled to the central processing unit 901.
  • the memory 902 can store various data; in addition, a program for data processing is stored, and the program is executed under the control of the central processing unit 901.
  • the functions of the device 500 may be integrated into the central processing unit 901.
  • the central processing unit 901 may be configured to implement the method of Embodiment 2.
  • the central processing unit 901 may be configured to control the network device 900 to execute the method of the second embodiment.
  • the above device 1000 may be configured separately from the central processing unit 901.
  • the device 700 may be configured as a chip connected to the central processing unit 901, such as a unit shown in FIG. Control to implement the function of the device 700.
  • the network device 900 may further include a transceiver 903, an antenna 904, and the like; wherein the functions of the above components are similar to those in the prior art, and are not repeated here. It is worth noting that the network device 900 does not have to include all the components shown in FIG. 9; in addition, the network device 900 may also include components not shown in FIG. 9, and reference may be made to the prior art.
  • the physical layer it is convenient for the physical layer to send data in a corresponding sending mode; in addition, it is possible to use a suitable unicast, multicast, or broadcast sending mode according to the characteristics of the data to be sent, which is conducive to data transmission meeting its QoS or being Send to a specific destination while ensuring high wireless resource utilization.
  • the seventh embodiment provides a communication system, which includes at least the terminal device 800 in the fifth embodiment and the network device 900 in the sixth embodiment.
  • the contents of Embodiment 5 and Embodiment 6 are incorporated herein, and are not repeated here.
  • the media access layer of the terminal device generates at least one PDU in the same manner as the transmission mode corresponding to the service data unit (SDU) included in a protocol data unit (PDU). Therefore, the PDU can be the same as the transmission mode Correspondingly, it is convenient for the physical layer to send data in a corresponding sending mode.
  • the terminal device determines or sets the sending mode according to the instruction information, and each layer of the terminal device performs corresponding processing, which is simple to implement. .
  • An embodiment of the present invention further provides a storage medium storing a computer-readable program, wherein the computer-readable program causes a data transmission device or terminal device of a vehicle communication (V2X) service to perform the vehicle communication (V2X) according to the embodiment 1.
  • V2X vehicle communication
  • An embodiment of the present invention also provides a computer-readable program, wherein when the program is executed in a data transmission device or terminal device of a vehicle communication (V2X) service, the program causes the data transmission device of the vehicle communication (V2X) service or The terminal device executes a data transmission method for a vehicle communication (V2X) service of the first embodiment.
  • V2X vehicle communication
  • An embodiment of the present invention also provides a storage medium storing a computer-readable program, where the computer-readable program causes a data transmission device or a network device of a vehicle communication (V2X) service to execute the vehicle communication (V2X) service of the second embodiment.
  • Data sending method a vehicle communication (V2X) service.
  • An embodiment of the present invention also provides a computer-readable program, wherein when the program is executed in a data transmission device or a network device of a car communication (V2X) service, the program makes the data transmission device or a network of a car communication (V2X) service The device executes the data transmission method of the vehicle communication (V2X) service described in Embodiment 2.
  • V2X vehicle communication
  • the above devices and methods of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software.
  • the present invention relates to a computer-readable program that, when executed by a logic component, enables the logic component to implement the apparatus or constituent components described above, or enables the logic component to implement various methods described above. Or steps.
  • the present invention also relates to a storage medium for storing the above programs, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, and the like.
  • Each processing method in each device described in connection with the embodiments of the present invention may be directly embodied as hardware, a software module executed by a processor, or a combination of the two.
  • one or more of the functional block diagrams and / or one or more combinations of the functional block diagrams shown in FIGS. 5 and 6 may correspond to each software module of a computer program flow, or to each hardware module.
  • These software modules can correspond to the steps shown in Figures 2 and 4, respectively.
  • These hardware modules can be implemented by using a field programmable gate array (FPGA) to cure these software modules.
  • FPGA field programmable gate array
  • a software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
  • a storage medium may be coupled to the processor so that the processor can read information from and write information to the storage medium; or the storage medium may be a component of the processor.
  • the processor and the storage medium may reside in an ASIC.
  • This software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal.
  • the software module may be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • One or more of the functional block diagrams and / or one or more combinations of the functional block diagrams described with reference to FIGS. 5 and 6 may be implemented as a general-purpose processor, a digital signal processor (DSP) for performing the functions described in this application. , Application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any suitable combination thereof.
  • One or more of the functional block diagrams and / or one or more combinations of the functional block diagrams described with respect to Figs. 5 and 6 may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, multiple microprocessors Processor, one or more microprocessors in conjunction with DSP communications, or any other such configuration.
  • a data transmission device for automotive communication (V2X) service which is installed in a terminal device and includes:
  • a first generating unit which is provided at a media access control (MAC) layer of the terminal device, and the generating unit uses the same transmission mode as a service data unit (SDU) corresponding to a protocol data unit (PDU). Generating at least one PDU; and
  • SDU service data unit
  • PDU protocol data unit
  • the first sending unit is provided in the MAC layer, and is configured to send the PDU to a physical layer of the terminal device, and notify the physical layer of the sending method corresponding to the PDU.
  • the sending mode includes unicast, multicast, or broadcast.
  • the first determining unit is disposed on an upper layer of the terminal device, and is configured to determine the sending mode.
  • the first determining unit indicates a sending mode corresponding to a data packet (data packet (s)) of the V2X service and the data packet of the V2X service.
  • a first mapping unit which is provided in a packet filtering unit of the terminal device, and the first mapping unit maps the data packet to a quality of service flow (QoS flow), where The data packets are sent in the same way.
  • QoS flow quality of service flow
  • a second mapping unit configured at a service data adaptation protocol (SDAP) layer of the terminal device, the second mapping unit mapping a quality of service flow or a data packet of the V2X service to a data radio bearer (DRB), wherein, the corresponding sending mode of the quality of service flow or the data packet of the V2X service on one DRB is the same.
  • SDAP service data adaptation protocol
  • DRB data radio bearer
  • a third mapping unit configured at the packet data convergence protocol (PDCP) layer of the terminal device, the third mapping unit mapping a quality of service flow or the V2X service data packet to a data radio bearer (DRB), wherein: The sending mode corresponding to the quality of service flow or the data packet of the V2X service on one DRB is the same.
  • PDCP packet data convergence protocol
  • DRB data radio bearer
  • the packet filtering unit (packet filter) of the terminal device maps a data packet to a quality of service flow (QoS flow), wherein a corresponding transmission method of a data packet in a quality of service flow is the same,
  • the first determining unit is provided in the packet filtering unit, and the sending mode corresponding to the quality of service flow is determined by the first determining unit.
  • the second determining unit is provided in an access (AS) layer of the terminal device, and is configured to determine the sending mode.
  • the second decision unit is set at a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, or a media access control (MAC) layer of the terminal device. And the second determining unit determines the transmission method.
  • SDAP service data adaptation protocol
  • PDCP packet data convergence protocol
  • RLC radio link control
  • MAC media access control
  • the second decision unit is set at the service data adaptation protocol (SDAP) layer,
  • the second decision unit determines the transmission method corresponding to a QoS flow or V2X service data packet, and the Service Data Adaptive Protocol (SDAP) layer maps the QoS flow or V2X service data packet to Data Radio Bearer (DRB), where the QoS flow or the data packet of the V2X service on one DRB corresponds to the same sending mode; or
  • SDAP Service Data Adaptive Protocol
  • the service data adaptation protocol (SDAP) layer maps the QoS flow or the data packet of the V2X service to a data radio bearer (DRB), and the second decision unit determines the sending method corresponding to the DRB .
  • SDAP service data adaptation protocol
  • the second determination unit is provided at the packet data convergence protocol (PDCP) layer, and is configured to determine the transmission method corresponding to the DRB and the transmission method corresponding to a radio link control channel (RLC channel) corresponding to the DRB, or The transmission mode corresponding to the logical channel corresponding to the DRB.
  • PDCP packet data convergence protocol
  • RLC channel radio link control channel
  • the second determination unit is provided in the radio link control (RLC) layer, and is configured to determine the transmission mode corresponding to a radio link control channel (RLC channel) or the transmission mode corresponding to a logical channel.
  • RLC radio link control
  • the second determining unit is provided in the medium access control (MAC) layer, and is configured to determine the sending method corresponding to a logical channel or the sending method corresponding to a MAC PDU.
  • MAC medium access control
  • a second sending unit which is provided at a higher layer of the terminal device and is configured to notify the lower layer of the sending method
  • Marking unit for data packets of V2X services, and / or QoS flows, and / or data radio bearers (DRB), and / or radio link control (RLC) channels, and / or logical channels
  • DRB data radio bearers
  • RLC radio link control
  • a first notification unit is configured to notify a network device of the sending mode.
  • the first notification unit passes a radio resource control (RRC) message of side link terminal equipment information (side link, UE information), or a side link cache status report (BSR), or a scheduling request (SR). ) Notifying the network device of the sending method.
  • RRC radio resource control
  • side link terminal equipment information side link, UE information
  • BSR side link cache status report
  • SR scheduling request
  • a first setting unit configured to set the sending method according to instruction information for configuring or indicating the sending method
  • the instruction information is provided by a network device of a core network, or a network device of an access network, or a roadside unit (RSU), or is pre-configured.
  • a network device of a core network or a network device of an access network, or a roadside unit (RSU), or is pre-configured.
  • RSU roadside unit
  • the instruction information provided by the network device of the core network is used to configure a sending mode corresponding to data packets and / or QoS flows on the side link.
  • the indication information provided by the network device of the access network is used to configure a sending mode corresponding to a DRB and / or RLC channel and / or a logical channel on the side link.
  • the instruction information provided by the network device of the access network includes a sending mode corresponding to the scheduled side link data.
  • the pre-configured indication information is used to configure a sending method corresponding to data packets, and / or QoS flows, and / or DRB, and / or RLC channels, and / or logical channels on the side link.
  • the sending method is based on the QoS characteristics and / or QoS level indication of the data to be sent, and / or the destination terminal device to which the data is to be sent, and / or the content of the information contained in the data, and / or The geographical location of the terminal device is determined.
  • the QoS characteristics include: data priority, and / or data delay, and / or data reliability, and / or data data rate, and / or data communication range;
  • the content of the information contained in the data includes: road conditions, and / or environment, and / or accident information; or, including business requests, and / or feedback; or, group public information.
  • a data transmission device for automotive communication (V2X) service which is arranged on a network device and includes:
  • a second generating unit that generates instruction information for configuring or indicating a data transmission mode of the terminal device
  • a third sending unit that sends the instruction information to the terminal device
  • the network device is a network device of a core network or a network device of an access network.
  • the indication information is used to configure a sending manner corresponding to data packets and / or QoS flows on an edge link.
  • the indication information is used to configure a sending mode of a DRB, and / or RLC channel, and / or a logical channel on a side link.
  • the indication information includes a sending mode corresponding to the scheduled edge link data.
  • a device for determining a data transmission mode in a vehicle communication (V2X) service comprising:
  • the first receiving unit receives a notification of a transmission mode of data of the terminal device sent by the terminal device.
  • the first receiving unit sends a radio resource control (RRC) message of side link terminal equipment information (side link UE information), or a side link cache status report (BSR), or a scheduling request (SR ) Receive the notification.
  • RRC radio resource control
  • the sending method is based on the QoS characteristics and / or QoS level indication of the data to be sent, and / or the destination terminal device to which the data is to be sent, and / or the content of the information contained in the data, and / or The geographical location of the terminal device is determined.
  • the QoS characteristics include: data priority, and / or data delay, and / or data reliability, and / or data data rate, and / or data communication range;
  • the content of the information contained in the data includes: road conditions, and / or environment, and / or accident information; or, including business requests, and / or feedback; or, group public information.
  • a communication system having a network device and a terminal device
  • the network device has the device according to any one of supplementary 25-32, and the terminal device has the device according to any one of supplementary 1-24.

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Abstract

本申请提供一种汽车通信(V2X)业务的数据发送装置、方法和通信系统，该装置包括：第一生成单元，其设置于所述终端设备的媒体接入控制(MAC)层，所述生成单元以一个协议数据单元(PDU)中包含的服务数据单元(SDU)对应的发送方式相同的方式生成至少一个PDU；以及第一发送单元，其设置于所述MAC层，用于将所述PDU发送给所述终端设备的物理层，并将所述PDU对应的所述发送方式通知给所述物理层。本申请便于物理层以相应的发送方式来发送数据，此外，在本实施例中，该终端设备决定或根据指示信息设定该发送方式，终端设备的各层进行相应的处理，实现简单。

Description

一种数据发送方法、装置和通信系统 技术领域
本申请涉及通信领域，特别涉及一种汽车通信(V2X)业务中的数据发送方法、装置和通信系统。
背景技术
汽车通信业务，被表示为V2X业务。V2X业务可以包括多种类型，例如：车对车(Vehicle-to-Vehicle，V2V)通信业务，车对基础设施(Vehicle-to-Infrastructure，V2I)通信业务，车对人(Vehicle-to-Pedestrian，V2P)通信业务等。
V2X业务可以通过PC5接口和/或Uu接口提供。对通过PC5接口传输的V2X业务，可以由V2X边链路(sidelink)通信提供，V2X边链路通信是一种终端设备能直接通过PC5接口彼此通信的通信模式。
应该注意，上面对技术背景的介绍只是为了方便对本申请的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本申请的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
本申请的发明人发现：在长期演进(LTE)中，V2X sidelink通信的数据发送方式在物理层(PHY)中主要是广播(broadcast)；在新无线(NR，New Radio)技术中，V2X为了支持更多的使用场景，可能在物理层中采用单播(unicast)或组播(groupcast)的发送方式；在现有技术中，虽然终端设备的物理(PHY)层有可能被通知以哪种发送方式来发送数据，但是，对于终端设备的其它层需要如何工作以便于物理层能够以相应的发送方式来发送数据，现有技术中仍然缺乏深入的研究。
本申请实施例提供一种数据发送方法、装置和通信系统，由终端设备的媒体接入层以一个协议数据单元(PDU)中包含的服务数据单元(SDU)对应的发送方式相同的方式生成至少一个PDU，由此，PDU能够与发送方式对应，所以，便于物理层在收到PDU(即传输块)后以相应的发送方式来发送数据。
根据本申请实施例的第一方面，提供了一种通信装置，设置于终端设备，该通信 装置包括：第一获得单元，其用于获取或选择基于汽车通信(V2X)业务与通信资源参数的映射关系而确定的通信资源；以及通信单元，其使用所述通信资源发送目标V2X业务。
根据本申请实施例的第二方面，提供一种通信装置，设置于网络设备，该通信装置包括：第二获得单元，其获取或确定汽车通信(V2X)业务与通信资源参数的映射关系。
根据本申请实施例的第三方面，提供了一种通信系统，该通信系统包括终端设备和网络设备，该终端设备包括如上述实施例的第一方面所述的通信装置，该网络设备包括如上述实施例的第二方面所述的通信装置。
本申请实施例的有益效果在于：由终端设备的媒体接入层以一个协议数据单元(PDU)中包含的服务数据单元(SDU)对应的发送方式相同的方式生成至少一个PDU，由此，PDU能够与发送方式对应，所以，便于物理层以相应的发送方式来发送数据。
参照后文的说明和附图，详细公开了本申请的特定实施方式，指明了本申请的原理可以被采用的方式。应该理解，本申请的实施方式在范围上并不因而受到限制。在所附权利要求的条款的范围内，本申请的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
在本申请实施例的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
所包括的附图用来提供对本申请实施例的进一步的理解，其构成了说明书的一部分，用于例示本申请的实施方式，并与文字描述一起来阐释本申请的原理。显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲， 在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。在附图中：
图1是本申请的通信系统的一个示意图；
图2是本申请实施例1的汽车通信(V2X)业务的数据发送方法的一个示意图；
图3是本申请的终端设备的部分组成的一个示意图；
图4是本申请实施例2的一个实施方式中数据发送方法的一个示意图；
图5是本申请实施例2的另一个实施方式中数据发送方法的一个示意图；
图6是本申请实施例3的一种汽车通信业务的数据发送装置的一个示意图；
图7是本申请实施例4的汽车通信(V2X)业务的数据发送装置的一个示意图；
图8是本申请实施例5的终端设备的构成示意图；
图9是本发明实施例6的网络设备构成示意图。
具体实施方式
参照附图，通过下面的说明书，本申请的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本申请的特定实施方式，其表明了其中可以采用本申请的原则的部分实施方式，应了解的是，本申请不限于所描述的实施方式，相反，本申请包括落入所附权利要求的范围内的全部修改、变型以及等同物。下面结合附图对本申请的各种实施方式进行说明。这些实施方式只是示例性的，不是对本申请的限制。
在本申请实施例中，术语“第一”、“第二”等用于对不同元素从称谓上进行区分，但并不表示这些元素的空间排列或时间顺序等，这些元素不应被这些术语所限制。术语“和/或”包括相关联列出的术语的一种或多个中的任何一个和所有组合。术语“包含”、“包括”、“具有”等是指所陈述的特征、元素、元件或组件的存在，但并不排除存在或添加一个或多个其他特征、元素、元件或组件。
在本申请实施例中，单数形式“一”、“该”等包括复数形式，应广义地理解为“一种”或“一类”而并不是限定为“一个”的含义；此外术语“该”应理解为既包括单数形式也包括复数形式，除非上下文另外明确指出。此外术语“根据”应理解为“至少部分根据……”，术语“基于”应理解为“至少部分基于……”，除非上下文另外明确指出。
在本申请实施例中，术语“通信网络”或“无线通信网络”可以指符合如下任意通信标准的网络，例如长期演进(LTE，Long Term Evolution)、增强的长期演进(LTE-A，LTE-Advanced)、宽带码分多址接入(WCDMA，Wideband Code Division Multiple  Access)、高速报文接入(HSPA，High-Speed Packet Access)等等。
并且，通信系统中设备之间的通信可以根据任意阶段的通信协议进行，例如可以包括但不限于如下通信协议：1G(generation)、2G、2.5G、2.75G、3G、4G、4.5G以及未来的5G、新无线(NR，New Radio)等等，和/或其他目前已知或未来将被开发的通信协议。
在本申请实施例中，术语“网络设备”例如是指通信系统中将终端设备接入通信网络并为该终端设备提供服务的设备。网络设备可以包括但不限于如下设备：基站(BS，Base Station)、接入点(AP、Access Point)、发送接收点(TRP，Transmission Reception Point)、广播发射机、移动管理实体(MME，Mobile Management Entity)、网关、服务器、无线网络控制器(RNC，Radio Network Controller)、基站控制器(BSC，Base Station Controller)等等。
其中，基站可以包括但不限于：节点B(NodeB或NB)、演进节点B(eNodeB或eNB)以及5G基站(gNB)，等等，此外还可包括远端无线头(RRH，Remote Radio Head)、远端无线单元(RRU，Remote Radio Unit)、中继(relay)或者低功率节点(例如femto、pico等等)。并且术语“基站”可以包括它们的一些或所有功能，每个基站可以对特定的地理区域提供通信覆盖。术语“小区”可以指的是基站和/或其覆盖区域，这取决于使用该术语的上下文。
在本申请实施例中，术语“用户设备”(UE，User Equipment)或者“终端设备”(TE，Terminal Equipment)例如是指通过网络设备接入通信网络并接收网络服务的设备。终端设备可以是固定的或移动的，并且也可以称为移动台(MS，Mobile Station)、终端、用户台(SS，Subscriber Station)、接入终端(AT，Access Terminal)、站，等等。
其中，终端设备可以包括但不限于如下设备：蜂窝电话(Cellular Phone)、个人数字助理(PDA，Personal Digital Assistant)、无线调制解调器、无线通信设备、手持设备、机器型通信设备、膝上型计算机、无绳电话、智能手机、智能手表、数字相机，等等。
再例如，在物联网(IoT，Internet of Things)等场景下，终端设备还可以是进行监控或测量的机器或装置，例如可以包括但不限于：机器类通信(MTC，Machine Type Communication)终端、车载通信终端、设备到设备(D2D，Device to Device)终端、机器到机器(M2M，Machine to Machine)终端，等等。
以下通过示例对本申请实施例的场景进行说明，但本申请不限于此。
图1是本申请的通信系统的一示意图，示意性说明了以终端设备和网络设备为例的情况，如图1所示，通信系统100可以包括网络设备101和多个终端设备102。该多个终端设备例如是终端设备1021、终端设备1022、终端设备1023、终端设备1024。
在本申请实施例中，网络设备101和终端设备102之间可以进行现有的业务或者未来可实施的业务。例如，这些业务包括但不限于：增强的移动宽带(eMBB，enhanced Mobile Broadband)、大规模机器类型通信(mMTC，massive Machine Type Communication)和高可靠低时延通信(URLLC，Ultra-Reliable and Low-Latency Communication)，等等。
其中，终端设备102可以向网络设备101发送数据并接收网络设备101的反馈信息。网络设备101也可以向一个或多个终端设备102发送数据，并接收终端设备102发送的反馈。
此外，终端设备102可以向其他一个或多于一个的终端设备102发送V2X业务相关的消息，或者终端设备102从其他终端设备102接收V2X业务相关的消息。例如，终端设备1021向终端设备1022发送V2X业务相关的消息，或者端设备1021从终端设备1022接收V2X业务相关的消息；再例如，终端设备1021向终端设备1022、终端设备1023和终端设备1024发送V2X业务相关的消息。
以下以将通信系统中的终端设备作为发送端，将终端设备作为接收端为例进行说明，但本申请不限于此，发送端和/或接收端还可以是其他的设备。例如，本申请不仅适用于两个终端设备之间的信号传输，还可以适用于网络设备和终端设备之间的信号传输。
实施例1
本申请实施例1提供一种通信方法，该方法可以由终端设备执行。
图2是本实施例的汽车通信(V2X)业务的数据发送方法的一个示意图，如图2所示，该方法包括：
步骤201、终端设备的媒体接入控制(MAC)层以一个协议数据单元(PDU)中包含的服务数据单元(SDU)对应的发送方式相同的方式生成至少一个PDU；
步骤202、所述MAC层将所述PDU发送给所述终端设备的物理层，并将所述 PDU对应的所述发送方式通知给所述物理层。
根据本实施例，由终端设备的媒体接入层以一个协议数据单元(PDU)中包含的服务数据单元(SDU)对应的发送方式相同的方式生成至少一个PDU，由此，PDU能够与发送方式对应，所以，便于物理层以相应的发送方式来发送数据。
例如，一个PDU中的SDU对应相同的发送方式，物理层接收该PDU(，并被指示该PDU对应的发送方式，物理层能够对该PDU进行处理，从而生成待发送的数据，该待发送的数据与该发送方式对应，即，该待发送的数据能够以该发送方式被发送。其中，物理层接收的PDU也被称为传输块(transport block，TB)。
在本实施例中，该发送方式包括广播(broadcast)、单播(unicast)或组播(groupcast)。
例如，终端设备和路边单元(RSU，roadside unit)之间或2个终端设备之间可以传递数据，数据可以通过单播方式来传递；又例如，位置接近的终端设备可以形成一个组，例如车队，终端设备可以通过组播方式来发送数据给组成员。
在本实施例中，如图2所示，该方法还可以包括：
步骤203、该终端设备决定或设定该发送方式。
由此，在步骤201中，该终端设备的媒体接入控制(MAC)层所生成的PDU中包含的SDU能够与步骤203中决定或设定的发送方式对应。
在本实施例的步骤203中，在一个实施方式中，该终端设备的上层决定该发送方式；或者，在另一个实施方式中，终端设备的接入(AS)层决定该发送方式；或者，在又一个实施方式中，该终端设备可以根据用于配置或指示该发送方式的指示信息，设定该发送方式。
下面，分别对步骤203中的上述各实施方式进行说明。
实施方式1：该终端设备的上层决定该发送方式。
在本实施例中，终端设备的上层是指V2X应用层或非接入(NAS)层。
在实施方式1中，该终端设备的上层决定该发送方式的方法可以有2种。其中，方法1，是由终端设备的上层指示V2X业务的数据包(data packet(s))，以及该V2X业务的数据包对应的发送方式；方法2，是由该终端设备的非接入(NAS)层的包过滤单元(packet filter)决定服务质量流中的数据对应的发送方式。
图3是终端设备的部分组成的一个示意图，其中301、302为可选出现的。下面， 结合图3来说明实施方式1中终端设备的相应部分如何工作。
在方法1中，终端设备的上层指示V2X业务的数据包(data packet(s))，以及该V2X业务的数据包对应的发送方式。该发送方式可以被指示给包过滤单元(packet filter)，和/或业务数据自适应协议(Service Data Adaptation Protocol，SDAP)层，和/或分组数据汇聚协议(PDCP)层。
其中，该发送方式被指示给包过滤单元(packet filter)的情况下，终端设备的包过滤单元(packet filter)可以根据被指示的发送方式，将数据包映射到服务质量流(QoS flow)，其中，一个服务质量流中的数据包对应的发送方式相同。
下面首先说明该发送方式被指示给包过滤单元(packet filter)的情况。终端设备的相应部分的工作如下：
步骤1.1、如图3所示，终端设备的包过滤单元(packet filter)301可以根据上层指示的数据包和发送方式，将该数据包映射到服务质量流(QoS flow(s))，其中，一个服务质量流(QoS flow)中的数据包对应的发送方式相同，由此，服务质量流与发送方式之间具有对应关系。此外，包过滤单元301还可以对该服务质量流的发送方式进行标记。
步骤1.2、终端设备的业务数据自适应协议(SDAP)层302可以将QoS flows映射到数据无线承载(DRB)，映射的结果可以是：一个DRB上的服务质量流对应的发送方式相同。因此，DRB与发送方式相对应。
步骤1.3、终端设备的分组数据汇聚协议(PDCP)层303可以将QoS flows映射到数据无线承载(DRB)，其中，一个DRB上的服务质量流对应的发送方式相同，因此，DRB与发送方式相对应。其中，需要说明的是，由于SDAP层302为可选出现的，上述步骤1.2也是可选出现的。在出现步骤1.2的情况下，由SDAP层302将QoS flows映射到DRB，因此，可以不具有步骤1.3；在没有步骤1.2的情况下，可有存在步骤1.3，由PDCP层303将QoS flows映射到DRB。
步骤1.4、数据无线承载(DRB)中的数据通过对应的无线链路控制(RLC)信道发送到无线链路控制(RLC)层304，并通过对应的逻辑信道(LCH)发送给媒体接入控制(MAC)层305。MAC层305的SDU来自逻辑信道(LCH)。在该过程中，数据无线承载(DRB)与逻辑信道(LCH)对应，因而逻辑信道(LCH)与发送方式相对应，并且来自逻辑信道的MAC层305的SDU也与发送方式形成对应关系。
步骤1.5、MAC层305可以根据SDU对应的发送方式进行PDU组装，使得PDU中包括的SDU对应的发送方式都相同，如图2的步骤201所示。此外，MAC层305还可以将PDU(即传输块)发送给物理层306，并将PDU(即传输块)对应的发送方式通知物理层306。
关于上述步骤1.1-步骤1.5，可以有如下的具体实例：
例如，终端设备的上层指示V2X业务的数据包packet 1/2/3/4为单播发送，packet 5/6为组播发送。在包过滤单元(packet filter)301，可以将packet 1/2映射到QoS flow1(对应的发送方式为单播)，将packet 3映射到QoS flow2(对应的发送方式为单播)，将packet 4映射到QoS flow3(对应的发送方式为单播)，将packet 5/6映射到QoS flow 4(对应的发送方式为组播)。在终端设备的SDAP层302，可以将QoS flow 1/2映射到数据无线承载DRB1(对应的发送方式为单播)，将QoS flow3映射到DRB2(对应的发送方式为单播)，将QoS flow 4映射到DRB3(对应的发送方式为组播)。这样DRB1、DRB2和DRB3对应的逻辑信道所对应的发送方式分别为单播、单播和组播。MAC层305进行逻辑信道优先级处理，生成的MAC PDU中包括DRB1和DRB2对应的逻辑信道的数据，即MAC SDU来自DRB1和DRB2对应的逻辑信道(对应的发送方式为单播)，这种情况下MAC PDU对应的发送方式为单播；或者生成的MAC PDU中包括DRB3对应的逻辑信道的数据，即MAC SDU来自DRB3对应的逻辑信道(对应的发送方式为组播)，这种情况下MAC PDU对应的发送方式为组播。MAC层305将MAC PDU对应的发送方式通知物理层306，并将MAC PDU发送给物理层306，用于物理层306接下来的处理，例如，物理层306对MAC PDU进行处理，从而生成待发送的数据，该待发送的数据与该发送方式对应，即，该待发送的数据能够以该发送方式被发送。
以上，针对实施方式1的方法1中，该发送方式被指示给包过滤单元(packet filter)的情况进行了说明。
在该发送方式被指示给SDAP层302的情况下，该业务数据自适应协议(SDAP)层根据被指示的发送方式，将服务质量流或V2X业务的数据包映射到数据无线承载(DRB)，其中，一个DRB上的服务质量流或V2X业务的数据包对应的发送方式相同。此外，PDCP层303、RLC层304、以及MAC层305的处理可以参照上述步骤1.3、步骤1.4、以及步骤1.5的说明。
在该发送方式被指示给终端设备的分组数据汇聚协议(PDCP)层303的情况下，该分组数据汇聚协议(PDCP)层根据被指示的发送方式，将服务质量流或V2X业务的数据包映射到数据无线承载(DRB)，其中，一个DRB上的服务质量流或V2X业务的数据包对应的发送方式相同。此外，RLC层304和MAC层305的处理可以参照上述步骤1.4和步骤1.5的说明。
在实施方式1的方法2中，由该终端设备的非接入(NAS)层的包过滤单元(packet filter)301决定服务质量流中的数据对应的发送方式。
例如，终端设备的包过滤单元(packet filter)将V2X业务的数据包映射到服务质量流(QoS flow)，其中，一个服务质量流中的数据包对应的发送方式相同，并且，包过滤单元决定一个服务质量流对应的发送方式。此外，该包过滤单元还可以将该发送方式通知给SDAP。此外，SDAP层302、PDCP层303、RLC层304、以及MAC层305的处理可以参照上述步骤1.2、步骤1.3、步骤1.4、以及步骤1.5的说明。
实施方式2：该终端设备的接入层决定该发送方式。
在本实施例中，终端设备的接入(AS)层可以包括SDAP层302、PDCP层303、RLC层304、以及MAC层305。在实施方式2中，可以由SDAP层302、PDCP层303、RLC层304、或MAC层305来决定该发送方式。
对于由SDAP层302决定发送方式的情况：业务数据自适应协议(SDAP)层可以决定QoS flow或V2X业务的数据包对应的发送方式，并将所述QoS flow或所述V2X业务的数据包映射到数据无线承载(DRB)，其中，一个DRB上的所述QoS flow或所述V2X业务的数据包对应的发送方式相同；或者，所述业务数据自适应协议(SDAP)层将所述QoS flow或所述V2X业务的数据包映射到数据无线承载(DRB)，并确定该DRB对应的所述发送方式。
例如，V2X业务的data packet(s)被Packet filter层301映射到QoS flows。在SDAP层302决定QoS flow对应的发送方式，并将QoS flow映射到DRB上，使得一个DRB对应的QoS flow对应的发送方式都相同；或者，SDAP层302将QoS flow映射到DRB上，并且，SDAP层决定DRB对应的发送方式。此外，PDCP层303、RLC层304、以及MAC层305的处理可以参照上述步骤1.3、步骤1.4、以及步骤1.5的说明。
对于由PDCP层303决定发送方式的情况：分组数据汇聚协议(PDCP)层决定定DRB对应的发送方式或DRB对应的无线链路控制信道(RLC channel)或DRB对 应的逻辑信道对应的发送方式。
例如，V2X业务的data packet(s)被Packet filter层301映射到QoS flows，SDAP层302将QoS flow映射到DRB，PDCP层303决定DRB对应的发送方式或DRB对应的RLC channel或DRB对应的逻辑信道对应的发送方式。此外，RLC层304以及MAC层305的处理可以参照上述步骤1.4、以及步骤1.5的说明。
对于由RLC层304决定发送方式的情况：无线链路控制(RLC)层304决定无线链路控制信道(RLC channel)对应的发送方式或逻辑信道对应的发送方式。
例如，V2X业务的data packet(s)被Packet filter层301映射到QoS flows，SDAP层302将QoS flow映射到DRB，在RLC层304决定DRB对应的RLC信道对应的发送方式或逻辑信道对应的发送方式。此外，MAC层305的处理可以参照上述步骤1.5的说明。
对于由MAC层305决定发送方式的情况：媒体接入控制(MAC)层305决定逻辑信道(logic channel)对应的发送方式或MAC PDU的发送方式。
例如，V2X业务的data packet(s)被Packet filter层301映射到QoS flows，SDAP层302将QoS flow映射到DRB，DRB对应的逻辑信道的数据被发送到MAC层作为MAC SDU，MAC经过逻辑信道优先级处理过程，生成包括MAC SDU的MAC PDU。MAC层305决定决定逻辑信道(logic channel)对应的发送方式或MAC PDU对应的发送方式。此外，MAC层305可以将MAC PDU及其对应的发送方式通知给物理层306。
在本实施例的上述实施方式一和实施方式二中，由终端设备决定发送方式，终端设备的各层可以至少一种方法获知发送方式。
在一个实例中，该获知发送方式的方法可以是：终端设备的较高层向较低层通知所述发送方式，例如，SDAP层向PDCP层通知DRB对应的发送方式，和/或PDCP层通知RLC层关于RLC信道对应的发送方式，和/或RLC通知MAC关于逻辑信道的发送方式，此外，也可以跨层通知，例如PDCP层直接通知MAC层关于逻辑信道的发送方式。
在另一个实例中，该获知发送方式的方法可以是：终端设备对V2X业务数据包，和/或服务质量流(QoS flow)，和/或数据无线承载(DRB)，和/或无线链路控制(RLC)信道，和/或逻辑信道对应的发送方式进行标记，例如，将V2X业务数据包和/或服务 质量流和/或数据无线承载的发送方式进行标记，各层读取flow/DRB/RLC/逻辑信道的发送方式。
在本实施例的上述实施方式1和实施方式2中，由终端设备决定发送方式，因此，终端设备可以将该发送方式通知网络设备，从而便于网络设备分配合适的sidelink资源来发送数据，例如当终端设备处理网络覆盖内时，便于网络设备分配合适的sidelink资源来发送数据。
其中，终端设备可以通过边链路终端设备信息(sidelink UE information)的无线资源控制(RRC)消息，或者边链路(sidelink)缓存状态报告(BSR)将该发送方式通知给网络设备，或者调度请求(Scheduling request，SR)将该发送方式通知给网络设备。
例如，在终端设备通过边链路终端设备信息(sidelink UE information)的RRC消息将发送方式通知网络设备的情况下，该RRC消息中包括UE的V2X业务，和/或QoS flow，和/或DRB，和/或逻辑信道对应的发送方式；
在终端设备通过BSR将发送方式通知网络设备的情况下，该BSR中包括逻辑信道和/或逻辑信道组对应的发送方式；
在终端设备通过SR将发送方式通知网络设备的情况下，该SR中包括该SR对应的逻辑信道所对应的发送方式，或者该SR中包括逻辑信道标识和该逻辑信道对应的发送方式。
与之对应，网络设备收到终端设备的发送方式通知消息时，可以为UE分配适用于该发送方式的边链路资源池(sidelink resource pool)和/或边链路调度分配(sidelink grant)。
实施方式3、终端设备根据用于配置或指示该发送方式的指示信息，设定该发送方式。
在实施方式3中，该指示信息可以由网络设备提供，该网络设备可以是核心网的网络设备，或者接入网的网络设备；该指示信息也可以被预配置给该终端设备；此外，该指示信息也可以由路侧单元(RSU)提供该终端设备。
在实施方式3中，在该指示信息由核心网的网络设备提供的情况下，终端设备可以通过专用的RRC信令或者系统信息来接收该指示信息。
核心网的网络设备提供的指示信息可以用于配置边链路上data packets和/或QoS  flows对应的发送方式。
该指示信息包括一种或多种边链路上的V2X业务的数据包各自采用的发送方式的配置(例如对V2X业务类型指示其发送方式)，或者包括一个或多个QoS flow的发送方式的配置(该配置包括QoS flow ID及其对应的发送方式)。
例如，终端设备处于核心网的网络设备的覆盖内的情况下，终端设备收到该指示信息后，可以根据该指示信息，配置边链路上data packets和/或QoS flows对应的发送方式，当该发送方式被设定后，终端设备各层的行为可以参见实施方式1中的说明。
在实施方式3中，在该指示信息由接入网的网络设备提供的情况下，终端设备可以通过专用的RRC信令或者系统信息或MAC控制信令或物理层控制信令来接收该指示信息。
在终端设备通过专用的RRC信令或者系统信息接收该指示信息的情况下，该指示信息能够用于配置边链路上DRB、和/或RLC信道、和/或逻辑信道对应的发送方式。该指示信息包括边链路上DRB标识(ID)和/或RLC信道标识和/或逻辑信道标识及其对应的发送方式。
例如，终端设备处于接入网的网络设备的覆盖内的情况下，终端设备收到该指示信息后，可以根据该指示信息，配置边链路上DRB、和/或RLC信道、和/或逻辑信道的发送方式，当该发送方式被设定后，终端设备各层的行为可以参见实施方式2中的说明。
在终端设备通过MAC控制信令接收该指示信息的情况下，该指示信息能够用于配置边链路上逻辑信道或逻辑信道组对应的发送方式。该指示信息包括边链路上逻辑信道标识或逻辑信道组标识及其对应的发送方式，或者该指示信息包括一个位图文件(bitmap)用于指示终端设备该MAC CE中包括哪些逻辑信道或逻辑信道组对应的发送方式、和包括的逻辑信道或逻辑信道组对应的发送方式。
在终端设备通过物理层控制信令接收该指示信息的情况下，该指示信息也可以包含调度的边链路数据对应的发送方式，例如调度的边链路MAC PDU(即传输块)对应的发送方式。
例如，该指示信息可以被包括在下行控制信息(DCI)中，例如边链路授权(sidelink grant)中，该指示信息能够指示本次或N(N为正整数)次调度的边链路数据对应的发送方式，例如本次或N次调度的边链路MAC PDU(即传输块)对应的发送方式， 该终端设备可以根据该指示信息来设定本次或N次要发送的边链路数据对应的发送方式为广播，组播或单播，例如设定本次或N次要发送的边链路MAC PDU(即传输块)对应的发送方式为广播，组播或单播。其中，N次表示本次以及本次接下来的几次。
在实施方式3中，预配置的指示信息可以用于配置边链路上data packets、和/或QoS flows、和/或DRB、和/或RLC信道、和/或逻辑信道对应的发送方式。
例如，终端设备根据该预配置的指示信息，配置边链路上DRB、和/或RLC信道、和/或逻辑信道的发送方式，当该发送方式被设定后，终端设备各层的行为可以参见实施方式1或2中的说明。
在本实施例的步骤203中，根据实施方式1和实施方式2，由终端设备的上层或接入层来决定该发送方式。下面，说明在实施方式1和实施方式2中，终端设备决定发送方式的依据。
在本实施例中，终端设备的上层或接入层可以基于待发送数据的QoS特性，和/或QoS等级指示，和/或数据将被发送到的目的终端设备，和/或数据中包含的信息的内容，和/或所述终端设备的地理位置来决定该数据对应的发送方式。
在本实施例中，QoS特性包括：数据的优先级，和/或数据的时延，和/或数据的可靠性，和/或数据的数据速率，和/或数据的通信范围。
例如，优先级高于第一阈值的高优先级的数据的发送方式可以是单播或组播，优先级低于第二阈值的低优先级的发送方式可以是广播；时延要求高于第三阈值的高时延要求的数据的发送方式可以是单播或组播，时延要求低于第四阈值的宽松时延要求的数据的发送方式可以是广播；可靠性要求高于第五阈值的高可靠性要求的数据的发送方式可以是单播或组播，可靠性要求低于第六阈值的低可靠性要求的数据的发送方式可以是广播；数据速率高于第七阈值的高数据速率的数据的发送方式可以是广播，数据速率高于第八阈值的低数据速率的数据的发送方式可以是单播；通信范围小于第九阈值的小通信范围的数据的发送方式可以是单播，通信范围大于第十阈值的大通信范围的数据的发送方式可以是组播或广播等。
在本实施例中，数据的QoS等级指示与发送方式之间可以具有映射关系，由此，能够基于QoS等级指示来决定发送方式。其中，数据的QoS等级指示可以与两个以上的QoS特性的取值对应，例如，QoS等级指示为某一等级时，该等级指示对应于 多个QoS特性各自的第一取值，QoS等级指示为另一等级时，该等级指示对应于多个QoS特性各自的第二取值。其中，一个QoS特性包括：数据的优先级，或数据的时延，或数据的可靠性，或数据的数据速率，或数据的通信范围等。
在本实施例中，基于待发送数据要被发送到的目的终端设备来决定该数据的发送方式，例如可以是：在组中，作为组员的终端设备向作为其他组员的其它终端设备发送的数据可以采用组播方式发送，向作为组员的特定终端设备或作为组头的终端设备发送的数据采用单播方式发送，向组内和组外的终端设备发送的数据可以采用广播方式发送。
在本实施例中，数据中包含的信息的内容包括：路况，和/或环境，和/或事故信息；或者，包含业务请求，和/或反馈；或者，组公共信息。基于数据中包含的信息的内容来决定数据采用的发送方式，例如可以是：包含路况、环境、事故等信息的数据的发送方式可以是广播；包含业务请求、反馈等的数据的发送方式可以是单播；包含组公共信息的数据的发送方式可以是组播，其中，组公共信息例如可以是组的安全信息和/或车队通知信息等。
在本实施例中，基于终端设备的地理位置来决定该数据对应的发送方式，例如可以是：当终端设备的地理位置位于区域A中时，数据的发送方式可以是组播，当终端设备的地理位置位于区域B中时，数据的发送方式可以是单播等。
在本实施例中，能够根据待发送的数据的特点使用合适的单播、组播或广播的发送方式，有利于数据传输满足其QoS或被发送到特定的目的地，同时确保了较高的无线资源利用率。
此外，在本实施例的步骤203中，在由终端设备根据指示信息来设定发送方式的实施方式3中，该指示信息所指示的发送方式也可以是基于上述依据而决定的。例如，核心网的网络设备、接入网的网络设备或路侧单元基于待发送数据的QoS特性，和/或QoS等级指示，和/或数据将被发送到的目的终端设备，和/或数据中包含的信息的内容，和/或终端设备的地理位置来决定该待发送数据对应的发送方式，并将该发送方式通过指示信息指示给终端设备；或者，预配置给终端设备的指示信息中，也是根据待发送数据的QoS特性，和/或QoS等级指示，和/或数据将被发送到的目的终端设备，和/或数据中包含的信息的内容，和/或终端设备的地理位置来决定该待发送数据对应的发送方式。
根据本实施例，由终端设备的媒体接入层以一个协议数据单元(PDU)中包含的服务数据单元(SDU)对应的发送方式相同的方式生成至少一个PDU，由此，PDU能够与发送方式对应，所以，便于物理层以相应的发送方式来发送数据；此外，在本实施例中，该终端设备决定或根据指示信息设定该发送方式，终端设备的各层进行相应的处理，实现简单。
实施例2
本实施例2提供一种数据发送方法，该方法由网络设备执行。
图4是本申请实施例2的一个实施方式中数据发送方法的一个示意图，该实施例2的该实施方式对应于实施例1的步骤203的实施方式3。如图4所示，该方法包括：
步骤401、网络设备生成用于配置或指示终端设备的数据的发送方式的指示信息；以及
步骤402、所述网络设备向所述终端设备发送所述指示信息。
在本实施例中，该发送方式包括单播、组播或广播。
在本实施例中，该网络设备可以是核心网的网络设备或接入网的网络设备。
在本实施例中，当该网络设备是核心网的网络设备时，该网络设备发送的该指示信息用于配置终端设备的边链路上data packets和/或QoS flows对应的发送方式。
在本实施例中，当该网络设备是接入网的网络设备时，该接入网的网络设备发送的指示信息用于配置终端设备的边链路上DRB、和/或RLC信道、和/或逻辑信道的发送方式。
在本实施例中，当该网络设备是接入网的网络设备时，该接入网的网络设备发送的指示信息也可以包含调度的边链路数据对应的发送方式。
在本实施例中，网络设备配置或指示终端设备进行汽车通信业务时的数据的发送方式，该终端设备能够根据该指示信息设定发送方式，并以该设定的发送方式发送汽车通信业务的数据。
图5是本申请实施例2的另一个实施方式中数据发送方法的一个示意图，该另一个实施方式对应于实施例1的步骤203的实施方式1和实施方式2。如图5所示，该方法包括：
步骤501、网络设备接收终端设备发送的所述终端设备的数据的发送方式的通 知。
在步骤501中，该网络设备可以通过边链路终端设备信息(side link UE information)的无线资源控制(RRC)消息，或者边链路(sidelink)缓存状态报告(BSR)，或者调度请求(Scheduling request，SR)接收该通知。
在本实施例中，在图4的实施方式所述的指示信息中，或者，在图5的实施方式所述的接收到的该通知中，发送方式可以基于待发送数据的QoS特性，和/或QoS等级指示，和/或所述数据将被发送到的目的终端设备，和/或所述数据中包含的信息的内容，和/或所述终端设备的地理位置来决定。
其中，QoS特性包括：数据的优先级，和/或数据的时延，和/或数据的可靠性，和/或数据的数据速率，和/或数据的通信范围；数据中包含的信息的内容包括：路况，和/或环境，和/或事故信息；或者，包含业务请求，和/或反馈；或者，组公共信息。
此外，也可以将步骤501与图4结合，即，图4的方法中可以包括步骤401、步骤402、以及步骤501。
根据本实施例，便于物理层以相应的发送方式来发送数据；此外，能够根据待发送的数据的特点使用合适的单播、组播或广播的发送方式，有利于数据传输满足其QoS或被发送到特定的目的地，同时确保了较高的无线资源利用率。
实施例3
本实施例3提供一种汽车通信业务的数据发送装置，设置于终端设备。由于该装置解决问题的原理与实施例1的方法类似，因此其具体的实施可以参考实施例1的方法的实施，内容相同之处不再重复说明。
图6是实施例3的一种汽车通信业务的数据发送装置的一个示意图，如图6所示，该装置600包括：
第一生成单元601，其设置于所述终端设备的媒体接入控制(MAC)层，所述生成单元以一个协议数据单元(PDU)中包含的服务数据单元(SDU)对应的发送方式相同的方式生成至少一个PDU；以及
第一发送单元602，其设置于所述MAC层，用于将所述PDU发送给所述终端设备的物理层，并将所述PDU对应的所述发送方式通知给所述物理层。
在本实施例中，该发送方式包括单播、组播或广播。
如图6所示，该装置600还包括：
第一决定单元603，其设置于终端设备的上层，用于决定发送方式。
在第实施方式1中，第一决定单元603指示V2X业务的数据包(data packet(s))和所述V2X业务的数据包对应的发送方式。
在实施方式1中，如图6所示，装置600还包括：
第一映射单元604，其设置于所述终端设备的包过滤单元(packet filter)，所述第一映射单元将所述数据包映射到服务质量流(QoS flow)，其中，一个服务质量流中的数据包对应的发送方式相同。
在实施方式1中，如图6所示，所述装置600还包括：
第二映射单元605，其设置于所述终端设备的业务数据自适应协议(SDAP)层，所述第二映射单元将服务质量流或所述V2X业务的数据包映射到数据无线承载(DRB)，其中，一个DRB上的所述服务质量流或所述V2X业务的数据包对应的发送方式相同。
在实施方式1中，如图6所示，所述装置600还包括：
第三映射单元606，其设置于所述终端设备的分组数据汇聚协议(PDCP)层，所述第三映射单元将服务质量流或所述V2X业务数据包映射到数据无线承载(DRB)，其中，一个DRB上的所述服务质量流或所述V2X业务的数据包对应的发送方式相同。
在实施方式1中，第一决定单元603设置于包过滤单元。其中，包过滤单元(packet filter)将数据包映射到服务质量流(QoS flow)，其中，一个服务质量流中的数据包对应的发送方式相同，并且所述服务质量流对应的发送方式由所述第一决定单元决定。
在实施方式2中，如图6所示，所述装置600还包括：
第二决定单元607，其设置于所述终端设备的接入(AS)层，用于决定所述发送方式。
其中，第二决定单元607设置于所述终端设备的业务数据自适应协议(SDAP)层、分组数据汇聚协议(PDCP)层、无线链路控制(RLC)层、或媒体接入控制(MAC)层，并且，所述第二决定单元决定所述发送方式。
例如，所述第二决定单元607设置于所述业务数据自适应协议(SDAP)层，所 述第二决定单元决定QoS flow或V2X业务的数据包对应的所述发送方式，并且，所述业务数据自适应协议(SDAP)层将所述QoS flow或所述V2X业务的数据包映射到数据无线承载(DRB)，其中，一个DRB上的所述QoS flow或所述V2X业务的数据包对应的发送方式相同；或者所述业务数据自适应协议(SDAP)层将所述QoS flow或所述V2X业务的数据包映射到数据无线承载(DRB)，并且，所述第二决定单元决定该DRB对应的所述发送方式。
又例如，所述第二决定单元607设置于所述分组数据汇聚协议(PDCP)层，用于决定DRB对应的所述发送方式、DRB对应的无线链路控制信道(RLC channel)对应的所述发送方式，或DRB对应的逻辑信道对应的所述发送方式。
又例如，所述第二决定单元607设置于所述无线链路控制(RLC)层，用于决定无线链路控制信道(RLC channel)对应的所述发送方式或逻辑信道对应的所述发送方式。
又例如，所述第二决定单元607设置于所述媒体接入控制(MAC)层，用于决定逻辑信道(logic channel)对应的所述发送方式或MAC PDU对应的发送方式。
在实施方式1和实施方式2中，如图6所示，所述装置600还包括：
第二发送单元608，其设置于所述终端设备的较高层，用于向较低层通知所述发送方式；或者，标记单元609，其用于对V2X业务的数据包，和/或服务质量流(QoS flow)，和/或数据无线承载(DRB)，和/或无线链路控制(RLC)信道，和/或逻辑信道对应的发送方式进行标记。
在实施方式1和实施方式2中，如图6所示，所述装置600还包括：
第一通知单元610，用于将所述发送方式通知网络设备。
其中，第一通知单元610通过边链路终端设备信息(side link UE information)的无线资源控制(RRC)消息，或者边链路(sidelink)缓存状态报告(BSR)，或者调度请求(Scheduling request，SR)将所述发送方式通知所述网络设备。
在实施方式3中，如图6所示，所述装置600还包括：
第一设定单元611，其根据用于配置或指示所述发送方式的指示信息，设定所述发送方式，其中，所述指示信息由核心网的网络设备提供，或者由接入网的网络设备提供，或者由路侧单元(RSU)提供，或者被预配置。
其中，核心网的网络设备提供的指示信息用于配置边链路上data packets和/或 QoS flows对应的发送方式；所述接入网的网络设备提供的指示信息用于配置边链路上DRB和/或RLC信道、和/或逻辑信道对应的发送方式；所述接入网的网络设备提供的指示信息包含调度的边链路数据的发送方式。
在实施方式3中，预配置的指示信息用于配置边链路上data packets、和/或QoS flows、和/或DRB、和/或RLC信道、和/或逻辑信道对应的发送方式。
在本实施例中，发送方式基于待发送数据的QoS特性，和/或QoS等级指示，和/或所述数据将被发送到的目的终端设备，和/或所述数据中包含的信息的内容，和/或所述终端设备的地理位置来决定。
其中，QoS特性包括：数据的优先级，和/或数据的时延，和/或数据的可靠性，和/或数据的数据速率，和/或数据的通信范围；所述数据中包含的信息的内容包括：路况，和/或环境，和/或事故信息；或者，包含业务请求，和/或反馈；或者，组公共信息。
关于各单元的详细说明，可以参考实施例1中对相应步骤的描述，此处不再重复说明。
根据本实施例，由终端设备的媒体接入层以一个协议数据单元(PDU)中包含的服务数据单元(SDU)对应的发送方式相同的方式生成至少一个PDU，由此，PDU能够与发送方式对应，所以，便于物理层以相应的发送方式来发送数据；此外，在本实施例中，该终端设备决定或根据指示信息设定该发送方式，终端设备的各层进行相应的处理，实现简单。
实施例4
本实施例4提供一种汽车通信(V2X)业务的数据发送装置，设置于网络设备。由于该装置解决问题的原理与实施例2的方法类似，因此其具体的实施可以参考实施例2的方法的实施，内容相同之处不再重复说明。
图7是本实施例4的汽车通信(V2X)业务的数据发送装置的一个示意图。如图7所示，装置700包括：
第二生成单元701，其生成用于配置或指示终端设备的数据的发送方式的指示信息；以及
第三发送单元702，其向所述终端设备发送所述指示信息。
在本实施例中，该网络设备是核心网的网络设备或接入网的网络设备。
在本实施例中，当该网络设备是核心网的网络设备时，所述指示信息用于配置边链路上data packets和/或QoS flows的发送方式。
在本实施例中，当该网络设备是接入网的网络设备时，所述指示信息用于配置边链路上DRB、和/或RLC信道、和/或逻辑信道的发送方式。
如图7所示，装置700还可以包括：
第一接收单元703，其接收终端设备发送的所述终端设备的数据的发送方式的通知。
其中，第一接收单元通过边链路终端设备信息(side link UE information)的无线资源控制(RRC)消息，或者边链路(sidelink)缓存状态报告(BSR)，或者调度请求(Scheduling request，SR)接收所述通知。
在本实施例中，在所述第二生成单元生成的所述指示信息中，或者，在所述第一接收单元接收的所述通知中：
所述发送方式基于待发送数据的QoS特性，和/或QoS等级指示，和/或所述数据将被发送到的目的终端设备，和/或所述数据中包含的信息的内容，和/或所述终端设备的地理位置来决定。
其中，所述QoS特性包括：数据的优先级，和/或数据的时延，和/或数据的可靠性，和/或数据的数据速率，和/或数据的通信范围；
所述数据中包含的信息的内容包括：路况，和/或环境，和/或事故信息；或者，包含业务请求，和/或反馈；或者，组公共信息。
此外，需要说明的是，本实施例的装置700中也可以仅具有第一接收单元703。
在本实施例中，关于各单元的说明可以参考实施例2中关于各步骤的说明。
根据本实施例，便于物理层以相应的发送方式来发送数据；此外，能够根据待发送的数据的特点使用合适的单播、组播或广播的发送方式，有利于数据传输满足其QoS或被发送到特定的目的地，同时确保了较高的无线资源利用率。
实施例5
本实施例5提供一种终端设备，由于该设备解决问题的原理与实施例1的方法类似，因此其具体的实施可以参考实施例1的方法实施，内容相同之处不再重复说明。
图8是本申请实施例的终端设备的构成示意图。如图8所示，终端设备800可以包括：中央处理器(CPU)801和存储器802；存储器802耦合到中央处理器801。其中该存储器802可存储各种数据；此外还存储数据处理的程序，并且在中央处理器801的控制下执行该程序，以根据接收的信令对终端设备进行指示。
在一个实施方式中，实施例3的装置600的功能可以被集成到终端设备800的中央处理器801中。其中，中央处理器801可以被配置为实现实施例1所述的汽车通信(V2X)业务的数据发送方法。
例如，中央处理器801可以被配置为进行控制，以使终端设备800执行实施例1的方法。
另外，该中央处理器801的其他配置方式可以参考实施例1，此处不再赘述。
在另一个实施方式中，上述装置600可以与中央处理器801分开配置，例如，可以将装置600配置为与中央处理器801连接的芯片，如图8所示的单元，通过中央处理器801的控制来实现装置600的功能。
根据本实施例，由终端设备的媒体接入层以一个协议数据单元(PDU)中包含的服务数据单元(SDU)对应的发送方式相同的方式生成至少一个PDU，由此，PDU能够与发送方式对应，所以，便于物理层以相应的发送方式来发送数据；此外，在本实施例中，该终端设备决定或根据指示信息设定该发送方式，终端设备的各层进行相应的处理，实现简单。
实施例6
本实施例6提供一种网络设备，该设备解决问题的原理与实施例2的方法类似，因此其具体的实施可以参考实施例2的方法实施，内容相同之处不再重复说明。
图9是本发明实施例的网络设备构成示意图。如图9所示，网络设备900可以包括：中央处理器(CPU)901和存储器902；存储器902耦合到中央处理器901。其中该存储器902可存储各种数据；此外还存储数据处理的程序，并且在中央处理器901的控制下执行该程序。
在一个实施方式中，装置500的功能可以被集成到中央处理器901中。其中，中央处理器901可以被配置为实现实施例2的方法。
例如，中央处理器901可以被配置为进行控制，以使网络设备900执行实施例2 的方法。
另外，该中央处理器901的其他配置方式可以参考实施例2，此处不再赘述。
在另一个实施方式中，上述装置1000可以与中央处理器901分开配置，例如，可以将装置700配置为与中央处理器901连接的芯片，如图9所示的单元，通过中央处理器901的控制来实现装置700的功能。
此外，如图9所示，网络设备900还可以包括：收发机903和天线904等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，网络设备900也并不是必须要包括图9中所示的所有部件；此外，网络设备900还可以包括图9中没有示出的部件，可以参考现有技术。
根据本实施例，便于物理层以相应的发送方式来发送数据；此外，能够根据待发送的数据的特点使用合适的单播、组播或广播的发送方式，有利于数据传输满足其QoS或被发送到特定的目的地，同时确保了较高的无线资源利用率。
实施例7
本实施例7提供一种通信系统，其至少包括实施例5中的终端设备800和实施例6中的网络设备900。实施例5和实施例6的内容被合并于此，此处不再赘述。
根据本实施例，由终端设备的媒体接入层以一个协议数据单元(PDU)中包含的服务数据单元(SDU)对应的发送方式相同的方式生成至少一个PDU，由此，PDU能够与发送方式对应，所以，便于物理层以相应的发送方式来发送数据；此外，在本实施例中，该终端设备决定或根据指示信息设定该发送方式，终端设备的各层进行相应的处理，实现简单。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中该计算机可读程序使得汽车通信(V2X)业务的数据发送装置或终端设备执行实施例1所述的汽车通信(V2X)业务的数据发送方法。
本发明实施例还提供一种计算机可读程序，其中当在汽车通信(V2X)业务的数据发送装置或终端设备中执行该程序时，该程序使得该汽车通信(V2X)业务的数据发送装置或终端设备执行实施例1的汽车通信(V2X)业务的数据发送方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中该计算机可读程序使得汽车通信(V2X)业务的数据发送装置或网络设备执行实施例2的汽车通信 (V2X)业务的数据发送方法。
本发明实施例还提供一种计算机可读程序，其中当在汽车通信(V2X)业务的数据发送装置或网络设备中执行该程序时，该程序使得汽车通信(V2X)业务的数据发送装置或网络设备执行实施例2所述的汽车通信(V2X)业务的数据发送方法。
本发明以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本发明涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。本发明还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
结合本发明实施例描述的在各装置中的各处理方法可直接体现为硬件、由处理器执行的软件模块或二者组合。例如，图5、6中所示的功能框图中的一个或多个和/或功能框图的一个或多个组合，既可以对应于计算机程序流程的各个软件模块，亦可以对应于各个硬件模块。这些软件模块，可以分别对应于图2、4所示的各个步骤。这些硬件模块例如可利用现场可编程门阵列(FPGA)将这些软件模块固化而实现。
软件模块可以位于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动磁盘、CD-ROM或者本领域已知的任何其它形式的存储介质。可以将一种存储介质耦接至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息；或者该存储介质可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。该软件模块可以存储在移动终端的存储器中，也可以存储在可插入移动终端的存储卡中。例如，若设备(例如移动终端)采用的是较大容量的MEGA-SIM卡或者大容量的闪存装置，则该软件模块可存储在该MEGA-SIM卡或者大容量的闪存装置中。
针对图5、6描述的功能框图中的一个或多个和/或功能框图的一个或多个组合，可以实现为用于执行本申请所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或其它可编程逻辑器件、分立门或晶体管逻辑器件、分立硬件组件、或者其任意适当组合。针对图5、6描述的功能框图中的一个或多个和/或功能框图的一个或多个组合，还可以实现为计算设备的组合，例如，DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本发明进行了描述，但本领域技术人员应该清楚，这 些描述都是示例性的，并不是对本发明保护范围的限制。本领域技术人员可以根据本发明的原理对本发明做出各种变型和修改，这些变型和修改也在本发明的范围内。
本申请还提供如下的附记：
1.一种汽车通信(V2X)业务的数据发送装置,设置于终端设备，包括:
第一生成单元，其设置于所述终端设备的媒体接入控制(MAC)层，所述生成单元以一个协议数据单元(PDU)中包含的服务数据单元(SDU)对应的发送方式相同的方式生成至少一个PDU；以及
第一发送单元，其设置于所述MAC层，用于将所述PDU发送给所述终端设备的物理层，并将所述PDU对应的所述发送方式通知给所述物理层。
2.如附记1所述的装置，其中，
所述发送方式包括单播、组播或广播。
3.如附记1所述的装置，其中，所述装置还包括：
第一决定单元，其设置于所述终端设备的上层，用于决定所述发送方式。
4.如附记3所述的装置，其中，
所述第一决定单元指示V2X业务的数据包(data packet(s))和所述V2X业务的数据包对应的发送方式。
5.如附记4所述的装置，其中，所述装置还包括：
第一映射单元，其设置于所述终端设备的包过滤单元(packet filter)，所述第一映射单元将所述数据包映射到服务质量流(QoS flow)，其中，一个服务质量流中的数据包对应的发送方式相同。
6.如附记4所述的装置，其中，所述装置还包括：
第二映射单元，其设置于所述终端设备的业务数据自适应协议(SDAP)层，所述第二映射单元将服务质量流或所述V2X业务的数据包映射到数据无线承载(DRB)，其中，一个DRB上的所述服务质量流或所述V2X业务的数据包对应的发送方式相同。
7.如附记4所述的装置，其中，所述装置还包括：
第三映射单元，其设置于所述终端设备的分组数据汇聚协议(PDCP)层，所述第三映射单元将服务质量流或所述V2X业务数据包映射到数据无线承载(DRB)，其中，一个DRB上的所述服务质量流或所述V2X业务的数据包对应的发送方式相同。
8.如附记3所述的装置，其中，
所述终端设备的包过滤单元(packet filter)，将数据包映射到服务质量流(QoS flow)，其中，一个服务质量流中的数据包对应的发送方式相同，
所述第一决定单元设置于所述包过滤单元，并且所述服务质量流对应的发送方式由所述第一决定单元决定。
9.如附记1所述的装置，其中，所述装置还包括：
第二决定单元，其设置于所述终端设备的接入(AS)层，用于决定所述发送方式。
10.如附记9所述的装置，其中，
所述第二决定单元设置于所述终端设备的业务数据自适应协议(SDAP)层、分组数据汇聚协议(PDCP)层、无线链路控制(RLC)层、或媒体接入控制(MAC)层，并且，所述第二决定单元决定所述发送方式。
11.如附记10所述的装置，其中，
所述第二决定单元设置于所述业务数据自适应协议(SDAP)层，
所述第二决定单元决定QoS flow或V2X业务的数据包对应的所述发送方式，并且，所述业务数据自适应协议(SDAP)层将所述QoS flow或所述V2X业务的数据包映射到数据无线承载(DRB)，其中，一个DRB上的所述QoS flow或所述V2X业务的数据包对应的发送方式相同；或者
所述业务数据自适应协议(SDAP)层将所述QoS flow或所述V2X业务的数据包映射到数据无线承载(DRB)，并且，所述第二决定单元决定该DRB对应的所述发送方式。
12.如附记10所述的装置，其中，
所述第二决定单元设置于所述分组数据汇聚协议(PDCP)层，用于决定DRB对应的所述发送方式、DRB对应的无线链路控制信道(RLC channel)对应的所述发送方式，或DRB对应的逻辑信道对应的所述发送方式。
13.如附记10所述的装置，其中，
所述第二决定单元设置于所述无线链路控制(RLC)层，用于决定无线链路控制信道(RLC channel)对应的所述发送方式或逻辑信道对应的所述发送方式。
14.如附记10所述的装置，其中，
所述第二决定单元设置于所述媒体接入控制(MAC)层，用于决定逻辑信道(logic channel)对应的所述发送方式或MAC PDU对应的发送方式。
15.如附记3-14所述的装置，其中，所述装置还包括：
第二发送单元，其设置于所述终端设备的较高层，用于向较低层通知所述发送方式；或者
标记单元，用于对V2X业务的数据包，和/或服务质量流(QoS flow)，和/或数据无线承载(DRB)，和/或无线链路控制(RLC)信道，和/或逻辑信道对应的发送方式进行标记。
16.如附记3-15中任一项所述的装置，其中，所述装置还包括：
第一通知单元，用于将所述发送方式通知网络设备。
17.如附记16所述的装置，其中，
所述第一通知单元通过边链路终端设备信息(side link UE information)的无线资源控制(RRC)消息，或者边链路(sidelink)缓存状态报告(BSR)，或者调度请求(Scheduling request，SR)将所述发送方式通知所述网络设备。
18.如附记1所述的装置，其中，所述装置还包括：
第一设定单元，其根据用于配置或指示所述发送方式的指示信息，设定所述发送方式，
其中，所述指示信息由核心网的网络设备提供，或者由接入网的网络设备提供，或者由路侧单元(RSU)提供，或者被预配置。
19.如附记18所述的装置，其中，
所述核心网的网络设备提供的指示信息用于配置边链路上data packets和/或QoS flows对应的发送方式。
20.如附记18所述的装置，其中，
所述接入网的网络设备提供的指示信息用于配置边链路上DRB和/或RLC信道、和/或逻辑信道对应的发送方式。
21.如附记18所述的装置，其中，
所述接入网的网络设备提供的指示信息包含调度的边链路数据对应的发送方式。
22.如附记18所述的装置，其中，
预配置的指示信息用于配置边链路上data packets、和/或QoS flows、和/或DRB、 和/或RLC信道、和/或逻辑信道对应的发送方式。
23.如附记1-22中任一项所述的装置，其中，
所述发送方式基于待发送数据的QoS特性，和/或QoS等级指示，和/或所述数据将被发送到的目的终端设备，和/或所述数据中包含的信息的内容，和/或所述终端设备的地理位置来决定。
24.如附记23所述的装置，其中，
所述QoS特性包括：数据的优先级，和/或数据的时延，和/或数据的可靠性，和/或数据的数据速率，和/或数据的通信范围；
所述数据中包含的信息的内容包括：路况，和/或环境，和/或事故信息；或者，包含业务请求，和/或反馈；或者，组公共信息。
25.一种汽车通信(V2X)业务的数据发送装置，设置于网络设备，包括:
第二生成单元，其生成用于配置或指示终端设备的数据的发送方式的指示信息；以及
第三发送单元，其向所述终端设备发送所述指示信息，
其中，所述网络设备是核心网的网络设备或接入网的网络设备。
26.如附记25所述的装置，其中，
当所述网络设备是核心网的网络设备时，所述指示信息用于配置边链路上data packets和/或QoS flows对应的发送方式。
27.如附记25所述的装置，其中，
当所述网络设备是接入网的网络设备时，所述指示信息用于配置边链路上DRB、和/或RLC信道、和/或逻辑信道的发送方式。
28.如附记25所述的装置，其中，
当所述网络设备是核心网的网络设备时，所述指示信息包含调度的边链路数据对应的发送方式。
29.一种决定汽车通信(V2X)业务中数据发送方式的装置，包括：
第一接收单元，其接收终端设备发送的所述终端设备的数据的发送方式的通知。
30.如附记29所述的装置，其中，
所述第一接收单元通过边链路终端设备信息(side link UE information)的无线资源控制(RRC)消息，或者边链路(sidelink)缓存状态报告(BSR)，或者调度请求 (Scheduling request，SR)接收所述通知。
31.如附记25-30中任一项所述的装置，其中，
在所述第二生成单元生成的所述指示信息中，或者，在所述第一接收单元接收的所述通知中：
所述发送方式基于待发送数据的QoS特性，和/或QoS等级指示，和/或所述数据将被发送到的目的终端设备，和/或所述数据中包含的信息的内容，和/或所述终端设备的地理位置来决定。
32.如附记31所述的装置，其中，
所述QoS特性包括：数据的优先级，和/或数据的时延，和/或数据的可靠性，和/或数据的数据速率，和/或数据的通信范围；
所述数据中包含的信息的内容包括：路况，和/或环境，和/或事故信息；或者，包含业务请求，和/或反馈；或者，组公共信息。
33.一种通信系统，所述通信系统具有网络设备和终端设备，
其中，所述网络设备具有如附记25-32中任一项所述的装置，所述终端设备具有如附记1-24中任一项所述的装置。

Claims (20)

  1. 一种汽车通信(V2X)业务的数据发送装置，设置于终端设备，包括:
    第一生成单元，其设置于所述终端设备的媒体接入控制(MAC)层，所述生成单元以一个协议数据单元(PDU)中包含的服务数据单元(SDU)对应的发送方式相同的方式生成至少一个PDU；以及
    第一发送单元，其设置于所述MAC层，用于将所述PDU发送给所述终端设备的物理层，并将所述PDU对应的所述发送方式通知给所述物理层。
  2. 如权利要求1所述的装置，其中，
    所述发送方式包括单播、组播或广播。
  3. 如权利要求1所述的装置，其中，所述装置还包括：
    第一决定单元，其设置于所述终端设备的上层，用于决定所述发送方式。
  4. 如权利要求3所述的装置，其中，
    所述第一决定单元指示V2X业务的数据包(data packet(s))和所述V2X业务的数据包对应的发送方式。
  5. 如权利要求4所述的装置，其中，所述装置还包括：
    第一映射单元，其设置于所述终端设备的包过滤单元(packet filter)，所述第一映射单元将所述数据包映射到服务质量流(QoS flow)，其中，一个服务质量流中的数据包对应的发送方式相同。
  6. 如权利要求4所述的装置，其中，所述装置还包括：
    第二映射单元，其设置于所述终端设备的业务数据自适应协议(SDAP)层，所述第二映射单元将服务质量流或所述V2X业务的数据包映射到数据无线承载(DRB)，其中，一个DRB上的所述服务质量流或所述V2X业务的数据包对应的发送方式相同。
  7. 如权利要求4所述的装置，其中，所述装置还包括：
    第三映射单元，其设置于所述终端设备的分组数据汇聚协议(PDCP)层，所述第三映射单元将服务质量流或所述V2X业务数据包映射到数据无线承载(DRB)，其中，一个DRB上的所述服务质量流或所述V2X业务的数据包对应的发送方式相同。
  8. 如权利要求1所述的装置，其中，所述装置还包括：
    第二决定单元，其设置于所述终端设备的接入(AS)层，用于决定所述发送方式。
  9. 如权利要求8所述的装置，其中，
    所述第二决定单元设置于所述终端设备的业务数据自适应协议(SDAP)层、分组数据汇聚协议(PDCP)层、无线链路控制(RLC)层、或媒体接入控制(MAC)层，并且，所述第二决定单元决定所述发送方式。
  10. 如权利要求3所述的装置，其中，所述装置还包括：
    第二发送单元，其设置于所述终端设备的较高层，用于向较低层通知所述发送方式；或者
    标记单元，用于对V2X业务的数据包，和/或服务质量流(QoS flow)，和/或数据无线承载(DRB)，和/或无线链路控制(RLC)信道，和/或逻辑信道对应的发送方式进行标记。
  11. 如权利要求3所述的装置，其中，所述装置还包括：
    第一通知单元，用于将所述发送方式通知网络设备。
  12. 如权利要求11所述的装置，其中，
    所述第一通知单元通过边链路终端设备信息(side link UE information)的无线资源控制(RRC)消息，或者边链路(sidelink)缓存状态报告(BSR)，或者调度请求(Scheduling request，SR)将所述发送方式通知所述网络设备。
  13. 如权利要求1所述的装置，其中，所述装置还包括：
    第一设定单元，其根据用于配置或指示所述发送方式的指示信息，设定所述发送方式，
    其中，所述指示信息由核心网的网络设备提供，或者由接入网的网络设备提供，或者由路侧单元(RSU)提供，或者被预配置。
  14. 如权利要求13所述的装置，其中，
    所述核心网的网络设备提供的指示信息用于配置边链路上data packets和/或QoS flows对应的发送方式。
  15. 如权利要求13所述的装置，其中，
    所述接入网的网络设备提供的指示信息用于配置边链路上DRB和/或RLC信道、和/或逻辑信道对应的发送方式。
  16. 如权利要求13所述的装置，其中，
    所述接入网的网络设备提供的指示信息包含调度的边链路数据对应的发送方式。
  17. 如权利要求1所述的装置，其中，
    所述发送方式基于待发送数据的QoS特性，和/或QoS等级指示，和/或所述数据将被发送到的目的终端设备，和/或所述数据中包含的信息的内容，和/或所述终端设备的地理位置来决定。
  18. 如权利要求17所述的装置，其中，
    所述QoS特性包括：数据的优先级，和/或数据的时延，和/或数据的可靠性，和/或数据的数据速率，和/或数据的通信范围；
    所述数据中包含的信息的内容包括：路况，和/或环境，和/或事故信息；或者，包含业务请求，和/或反馈；或者，组公共信息。
  19. 一种汽车通信(V2X)业务的数据发送装置，设置于网络设备，包括:
    第二生成单元，其生成用于配置或指示终端设备的数据的发送方式的指示信息；以及
    第三发送单元，其向所述终端设备发送所述指示信息，
    其中，所述网络设备是核心网的网络设备或接入网的网络设备。
  20. 一种通信系统，所述通信系统具有网络设备和终端设备，
    其中，所述网络设备具有如权利要求19所述的装置，所述终端设备具有如权利要求1-18中任一项所述的装置。
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