WO2019057154A1 - 数据传输方法、终端设备和网络设备 - Google Patents

数据传输方法、终端设备和网络设备 Download PDF

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Publication number
WO2019057154A1
WO2019057154A1 PCT/CN2018/106951 CN2018106951W WO2019057154A1 WO 2019057154 A1 WO2019057154 A1 WO 2019057154A1 CN 2018106951 W CN2018106951 W CN 2018106951W WO 2019057154 A1 WO2019057154 A1 WO 2019057154A1
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Prior art keywords
data
terminal device
sent
identifier
same
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PCT/CN2018/106951
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English (en)
French (fr)
Inventor
刘航
曹振臻
王和俊
李明超
肖潇
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华为技术有限公司
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Priority to EP18859870.0A priority Critical patent/EP3681071A4/en
Publication of WO2019057154A1 publication Critical patent/WO2019057154A1/zh
Priority to US16/824,301 priority patent/US20200221538A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1614—Details of the supervisory signal using bitmaps
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/189—Transmission or retransmission of more than one copy of a message
    • 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
    • H04L69/18—Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
    • 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
    • H04L69/321—Interlayer communication protocols or service data unit [SDU] definitions; Interfaces between layers
    • 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
    • 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
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0289—Congestion control
    • 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
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • 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
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
    • 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]
    • H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • 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

Definitions

  • the present application relates to communication technologies, and in particular, to a data transmission method, a terminal device, and a network device.
  • the vehicle networking system is based on the in-vehicle network, the inter-vehicle network and the in-vehicle mobile Internet.
  • the wireless communication and information exchange between the vehicle and the X (vehicle to X, V2X) is large.
  • System network Through the communication between V2X, the car networking system can achieve the purpose of improving road safety and traffic efficiency.
  • the V2X mentioned above may be a vehicle to vehicle (V2V), a vehicle to network (V2N), a vehicle-to-infrastructure (V2I), a vehicle and a pedestrian (vehicle). To pedestrian, V2P) and so on. That is, X can be a vehicle, an infrastructure, a network, a pedestrian, and the like.
  • V2X can use cellular technology to communicate using a straight-through link (also known as a side link, sidelink, etc.). That is, the vehicle and the X can use the resources scheduled or configured by the network device, or the pre-configured resources are used between the vehicle and the X, and the communication is directly performed through the through link, and does not need to be transited through the network device.
  • a straight-through link also known as a side link, sidelink, etc.
  • V2X uses a straight-through link for communication, how to realize repeated transmission of data is an urgent problem to be solved.
  • the present application provides a data transmission method, a terminal device, and a network device, which can implement repeated data transmission when a direct link is used for communication between V2Xs.
  • the first aspect provides a data transmission method, the method comprising:
  • the first terminal device receives the first information sent by the network device, where the first information is used to indicate that the first terminal device uses the n logical channels to transmit the same to-be-sent data of the same packet data convergence protocol PDCP entity, where the first terminal device
  • the information includes a first element, and the first element includes one or more identifiers: a data priority identifier of the data to be sent, a service type identifier to which the data to be sent belongs, and a service to which the data to be sent belongs a quality flow identifier, a destination address identifier of the to-be-sent data, a logical channel group identifier in which the n logical channels are located, n carrier identifiers corresponding to the n logical channels, and an identifier of the PDCP entity; Is a positive integer greater than one;
  • the first terminal device encapsulates the n data of the n logical channels into n media access control MAC protocol data unit PDUs according to the first information, where the n data includes: send data;
  • n MAC PDUs Transmitting, by the first terminal device, the n MAC PDUs to the second terminal device by using a through link, where the n MAC PDUs are carried by using n carriers.
  • the first terminal device may The through link uses n different carriers to send n MAC PDUs carrying the same to-be-sent data in the same PDCP entity to the second terminal device, so as to repeatedly send the same to-be-sent data to the second terminal device through the through-link. the goal of.
  • the first information further includes a second element
  • the first information is used to indicate that the first terminal device uses the n logical channels to transmit the same to-be-sent data of the same PDCP entity;
  • the element is the second value, the first information is used to indicate that the first terminal device stops using the n logical channels to transmit the same to-be-sent data of the same PDCP entity.
  • the network device can flexibly activate or deactivate the first terminal device to transmit the same to-be-sent data of the same PDCP entity by using n logical channels by using the first information, thereby effectively controlling the data.
  • the data of the first terminal device on the through link is repeatedly transmitted.
  • the first information is used to indicate that the first terminal device uses the n logical channels to transmit the same to-be-sent data of the same packet data convergence protocol PDCP entity, including:
  • the first information is used to activate the first terminal device to transmit the same to-be-sent data of the same packet data convergence protocol PDCP entity by using n logical channels.
  • the network device may activate the first terminal device to repeatedly transmit the same to-be-sent data of the same PDCP entity to the second terminal device by using the first information, so that the first terminal device can be effectively controlled.
  • the data is transmitted repeatedly.
  • the quality of service flow to which the data to be sent belongs belongs to the reliability of the data to be sent.
  • the network device may activate the first terminal device to perform repeated transmission for the data to be sent of a certain Qos flow on the PDCP entity.
  • the quality of service flow identifier to which the data to be sent belongs belongs to the reliability of the data to be sent.
  • the network device may activate the first terminal device to perform repeated transmission for the data to be sent of a certain Qos flow on the PDCP entity.
  • the first element includes: a bitmap; and one bit in the bitmap corresponds to an identifier.
  • the first information for activating or deactivating the same to-be-transmitted data of the first terminal device transmitting the same PDCP entity by using n logical channels can be implemented by using a bitmap, and the first information can be reduced.
  • the overhead of information can be implemented by using a bitmap, and the first information can be reduced.
  • the first information further includes: a third element
  • the third element is used to indicate that the first terminal device uses the n logical channels to transmit the maximum duration of the same to-be-sent data of the same PDCP entity.
  • the network device can semi-dynamically activate the first terminal device to transmit the same to-be-sent data of the same PDCP entity by using n logical channels, thereby further reducing the overhead of the first information.
  • the first information is carried in a MAC Control Element CE or Radio Resource Control RRC Signaling.
  • the network device can send the first information by using existing MAC CE or RRC signaling, and does not need to add signaling to implement the first information transmission, thereby reducing signaling overhead.
  • the method before the first terminal device receives the first information sent by the network device, the method further includes:
  • the first terminal device sends second information to the network device, where the second information is used to request that the first terminal device use the n logical channels to transmit the same to-be-sent data of the same PDCP entity.
  • the network device may activate the first terminal device to transmit the same to-be-sent data of the same PDCP entity by using n logical channels based on the request of the first terminal device, thereby effectively controlling the The data of a terminal device on the through link is repeatedly transmitted.
  • the second information includes one or more of the following: a data priority identifier of the data to be sent, a type identifier of a service to which the data to be sent belongs, and the to-be-sent a quality of service flow identifier to which the data belongs, a destination address identifier of the data to be transmitted, an identifier of the PDCP entity, and a channel congestion degree corresponding to at least one of the n logical channels.
  • the network device may activate the first terminal device to transmit the same to-be-sent data of the same PDCP entity by using n logical channels based on the request of the first terminal device, thereby effectively controlling the The data of a terminal device on the through link is repeatedly transmitted.
  • the second aspect provides a data transmission method, the method comprising:
  • the first terminal device encapsulates n data of the n logical channels into n media access control MAC protocol data unit PDUs, where the n data includes: the same to be sent data of the same packet data convergence protocol PDCP entity, Said n is a positive integer greater than one;
  • the first terminal device sends the n MAC PDUs to the second terminal device through the through link, and the retransmission identifier corresponding to the n data, where the n MAC PDUs are carried by n carriers.
  • the first terminal device may send n MAC PDUs carrying the same to-be-sent data in the same PDCP entity to the second terminal device by using the n different carriers through the through link. And the retransmission identifier corresponding to the n data, so that the second terminal device processes, according to the retransmission identifier, the data of the n MAC PDUs that contain the same to be sent data by using the same PDCP entity, and reaches the second through the through link. The terminal device repeatedly transmits the same data to be sent.
  • the retransmission identifier corresponding to the n data is carried in the n data
  • the retransmission identifier includes one or more of the following:
  • the identifier of the PDCP entity to which the data to be transmitted belongs the data priority identifier of the data to be sent, the quality of service stream identifier of the data to be sent, the destination address identifier of the data to be sent, and the data to be sent Business type identifier.
  • the first terminal device may carry the retransmission identifier in the n MAC PDUs, to send the data to be sent through the n MAC PDUs, and the retransmission identifier of the data to be sent. The same is sent to the second terminal device, which reduces the signaling overhead.
  • the retransmission identifier is carried in a MAC Control Element CE of at least one of the n MAC PDUs, or a corresponding one of the MAC Service Data Units SDU in which the data to be sent is located In the head.
  • the first terminal device may carry the retransmission identifier in a MAC CE of n MAC PDUs or a subheader of an SDU carrying data to be transmitted, to pass the n MAC PDUs.
  • the data to be sent and the retransmission identifier of the data to be sent are sent together to the second terminal device, which reduces signaling overhead.
  • the retransmission identifier includes: an identifier of the n logical channels, and/or an identifier of a radio link control protocol RLC entity corresponding to the n logical channels.
  • the first terminal device may send the identifiers of the n logical channels used in the retransmission and/or the identifiers of the RLC entities corresponding to the n logical channels as the retransmission identifier.
  • the second terminal device is configured to enable the second terminal device to process, by using the same PDCP entity, the data of the n MAC PDUs that contain the same data to be sent, and send the data to the second terminal device through the through link. The purpose of the same data to be sent.
  • the retransmission identifier when the retransmission identifier is the first value, the retransmission identifier is used to indicate that the first terminal device transmits the same PDCP entity by using the preset n logical channels. The same data to be sent.
  • the data transmission method provided by the possible implementation manner enables the first terminal device to flexibly transmit data using the preset n logical channels, thereby improving data transmission efficiency.
  • a third aspect provides a data transmission method, the method comprising:
  • the network device sends the first information to the first terminal device, where the first information is used to indicate that the first terminal device transmits the same to-be-sent data of the same packet data convergence protocol PDCP entity by using n logical channels, the first information.
  • the first element includes: one or more identifiers: a data priority identifier of the data to be sent, a service type identifier to which the data to be sent belongs, and a quality of service to which the data to be sent belongs a flow identifier, a destination address identifier of the to-be-sent data, a logical channel group identifier in which the n logical channels are located, n carrier identifiers corresponding to the n logical channels, and an identifier of the PDCP entity, where n is A positive integer greater than one.
  • the first information includes a second element
  • the first information is used to indicate that the first terminal device uses the n logical channels to transmit the same to-be-sent data of the same PDCP entity;
  • the element is the second value, the first information is used to indicate that the first terminal device stops using the n logical channels to transmit the same to-be-sent data of the same PDCP entity.
  • the first information is used to indicate that the first terminal device uses the n logical channels to transmit the same to-be-sent data of the same packet data convergence protocol PDCP entity, including:
  • the first information is used to activate the first terminal device to transmit the same to-be-sent data of the same packet data convergence protocol PDCP entity by using n logical channels.
  • the quality of service flow to which the data to be sent belongs belongs to the reliability of the data to be sent.
  • the quality of service flow identifier to which the data to be sent belongs belongs to the reliability of the data to be sent.
  • the first element includes: a bitmap; and one bit in the bitmap corresponds to an identifier.
  • the first information further includes: a third element
  • the third element is used to indicate that the first terminal device uses the n logical channels to transmit the maximum duration of the same to-be-sent data of the same PDCP entity.
  • the first information is carried in a medium access control MAC control element CE or a radio resource control RRC signaling.
  • the method before the sending, by the network device, the first information to the first terminal device, the method further includes:
  • the network device receives the second information sent by the first terminal device, where the second information is used to request the first terminal device to use the n logical channels to transmit the same to-be-sent data of the same PDCP entity.
  • the second information includes one or more of the following: a data priority identifier of the data to be sent, a type identifier of a service to which the data to be sent belongs, and the to-be-sent a quality of service flow identifier to which the data belongs, a destination address identifier of the data to be transmitted, an identifier of the PDCP entity, and a channel congestion degree corresponding to at least one of the n logical channels.
  • a fourth aspect provides a data transmission method, the method comprising:
  • n media access control MAC protocol data unit PDUs sent by the first terminal device receives, by the second terminal device, n media access control MAC protocol data unit PDUs sent by the first terminal device, and retransmission identifiers corresponding to the n data
  • the n MAC PDUs use n carriers
  • the n datas include: the same to-be-sent data of the same packet data convergence protocol PDCP entity, where n is a positive integer greater than 1. ;
  • the second terminal device processes the n data by using the same PDCP entity according to the retransmission identifier corresponding to the n data.
  • the retransmission identifier corresponding to the n data is carried in the n data
  • the retransmission identifier includes one or more of the following:
  • the identifier of the PDCP entity to which the data to be transmitted belongs the data priority identifier of the data to be sent, the quality of service stream identifier of the data to be sent, the destination address identifier of the data to be sent, and the data to be sent Business type identifier.
  • the retransmission identifier is carried in a MAC Control Element CE of at least one of the n MAC PDUs, or a corresponding one of the MAC Service Data Units SDU in which the data to be sent is located In the head.
  • the retransmission identifier includes: an identifier of the n logical channels, and/or an identifier of a radio link control protocol RLC entity corresponding to the n logical channels.
  • the retransmission identifier when the retransmission identifier is the first value, the retransmission identifier is used to indicate that the first terminal device transmits the same PDCP entity by using the preset n logical channels. The same data to be sent.
  • a fifth aspect provides a terminal device, where the terminal device is a first terminal device, where the first terminal device includes: a method for performing the method provided by any of the foregoing first aspect or the first aspect. Module or unit.
  • the sixth aspect provides a terminal device, where the terminal device is a first terminal device, where the first terminal device includes: a method for performing the method provided by any of the foregoing second aspect or the second aspect. Module or unit.
  • a seventh aspect provides a network device, comprising: a module or unit for performing the method provided by any of the above third or third possible implementations.
  • the eighth aspect provides a terminal device, where the terminal device is a second terminal device, where the second terminal device includes: a method for performing the method provided by any of the foregoing fourth aspect or the fourth aspect. Module or unit.
  • a ninth aspect provides a terminal device, where the terminal device is a first terminal device, where the first terminal device includes: a processor, a memory, a receiver, and a transmitter; the receiver and the transmitter are both coupled to The processor, the processor controls a receiving action of the receiver, and the processor controls a sending action of the transmitter;
  • the memory is for storing computer executable program code, the program code comprising instructions; when the processor executes the instructions, the instructions cause the first terminal device to perform the first aspect and the possible embodiments provided by the first aspect Data transmission method.
  • a tenth aspect provides a terminal device, where the terminal device is a first terminal device, where the first terminal device includes: a processor, a memory, and a transmitter; the transmitter is coupled to the processor, the processor Controlling a sending action of the transmitter;
  • the memory is for storing computer executable program code, the program code comprising instructions; when the processor executes the instructions, the instructions cause the first terminal device to perform the second aspect and the possible implementations of the second aspect Data transmission method.
  • An eleventh aspect provides a network device, the network device comprising: a processor, a memory, a receiver, and a transmitter; the receiver and the transmitter are each coupled to the processor, the processor controlling the Determining a receiving action of the receiver, the processor controlling a sending action of the transmitter;
  • the memory is for storing computer executable program code, the program code comprising instructions; when the processor executes the instructions, the instructions cause the network device to perform data transmission as provided by the first aspect and the possible embodiments of the first aspect method.
  • a twelfth aspect provides a terminal device, where the terminal device is a second terminal device, the second terminal device includes: a processor, a memory, and a receiver; the receiver is coupled to the processor, and the processing Controlling a receiving action of the receiver;
  • the memory is for storing computer executable program code, the program code comprising instructions; when the processor executes the instructions, the instructions cause the second terminal device to perform the second aspect and the possible implementations of the second aspect Data transmission method.
  • a thirteenth aspect provides a terminal device, the terminal device being a first terminal device, the first terminal device comprising: at least one processing element (or chip) for performing the method of the above first aspect.
  • a fourteenth aspect provides a terminal device, the terminal device being a first terminal device, the first terminal device comprising: at least one processing element (or chip) for performing the method of the above second aspect.
  • a fifteenth aspect provides a network device, comprising: at least one processing element (or chip) for performing the method of the above third aspect.
  • a sixteenth aspect provides a terminal device, the terminal device being a second terminal device, the second terminal device comprising: at least one processing element (or chip) for performing the method of the above fourth aspect.
  • a seventeenth aspect provides a program for performing the method of the above first aspect when executed by a processor.
  • the eighteenth aspect provides a program for performing the method of the above second aspect when executed by a processor.
  • a nineteenth aspect provides a program for performing the method of the above third aspect when executed by a processor.
  • a twentieth aspect provides a program for performing the method of the above fourth aspect when executed by a processor.
  • a twenty-first aspect provides a program product, such as a computer readable storage medium, comprising the program of the seventeenth aspect.
  • a twenty-second aspect provides a program product, such as a computer readable storage medium, comprising the program of the eighteenth aspect.
  • a twenty-third aspect provides a program product, such as a computer readable storage medium, comprising the program of the nineteenth aspect.
  • a twenty-fourth aspect provides a program product, such as a computer readable storage medium, comprising the program of the twentieth aspect.
  • a twenty-fifth aspect provides a computer readable storage medium having instructions stored in a computer readable storage medium for causing a computer to perform the method of the first aspect described above.
  • a twenty-sixth aspect provides a computer readable storage medium having instructions stored in a computer readable storage medium for causing a computer to perform the method of the second aspect described above.
  • a twenty-seventh aspect provides a computer readable storage medium having instructions stored in a computer readable storage medium for causing a computer to perform the method of the third aspect described above.
  • a twenty-eighth aspect provides a computer readable storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method of the fourth aspect described above.
  • a twenty-ninth aspect provides an apparatus, the apparatus comprising: a module or unit for performing the method provided by the first aspect or any of the possible implementations of the first aspect. It should be understood that the device is a chip or that the device is composed of at least one processor and one transceiver.
  • a thirtieth aspect provides an apparatus, the apparatus comprising: a module or unit for performing the method provided by any of the possible implementations of the second aspect or the second aspect above. It should be understood that the device is a chip or that the device is composed of at least one processor and one transceiver.
  • a thirty-first aspect provides an apparatus, the apparatus comprising: a module or unit for performing the method provided by the third aspect or any of the possible implementations of the third aspect. It should be understood that the device is a chip or that the device is composed of at least one processor and one transceiver.
  • a thirty-second aspect provides an apparatus, the apparatus comprising: a module or unit for performing the method provided by the fourth aspect or any of the possible implementations of the fourth aspect. It should be understood that the device is a chip or that the device is composed of at least one processor and one transceiver.
  • a thirty-third aspect provides a communication system, comprising: the first terminal device according to the fifth aspect and the sixth aspect, the network device according to the seventh aspect, and the eighth aspect, Second terminal device.
  • the first terminal device receives the first information sent by the network device to instruct the first terminal device to use the n logical channels to transmit the same to-be-sent data of the same PDCP entity.
  • the n number of MAC PDUs carrying the same to-be-sent data in the same PDCP entity may be sent to the second terminal device through the through-link, and the second terminal device may be repeatedly sent to the second terminal device through the through-link. The purpose of the same data to be sent.
  • Figure 1 is a block diagram of a communication system according to the present application.
  • FIG. 2 is a schematic diagram 1 of a scenario of V2X communication
  • FIG. 3 is a schematic diagram 2 of a scenario of V2X communication
  • FIG. 4 is a schematic diagram 3 of a scenario of V2X communication
  • FIG. 5 is a signaling flowchart of a data transmission method provided by the present application.
  • FIG. 6 is a schematic structural diagram of a protocol stack provided by the present application.
  • FIG. 7 is a signaling flowchart of another data transmission method provided by the present application.
  • FIG. 8 is a schematic structural diagram of a terminal device according to the present application.
  • FIG. 9 is a schematic structural diagram of another terminal device provided by the present application.
  • FIG. 10 is a schematic structural diagram of a network device according to the present application.
  • FIG. 11 is a schematic structural diagram of still another terminal device provided by the present application.
  • FIG. 12 is a schematic structural view of a device provided by the present application.
  • Figure 13 is a schematic structural view of another device provided by the present application.
  • Figure 14 is a schematic structural view of still another device provided by the present application.
  • Figure 15 is a schematic structural view of still another device provided by the present application.
  • FIG. 16 is a schematic structural diagram of still another terminal device provided by the present application.
  • 17 is a schematic structural diagram of still another terminal device provided by the present application.
  • FIG. 18 is a schematic structural diagram of another network device provided by the present application.
  • FIG. 19 is a schematic structural diagram of still another terminal device provided by the present application.
  • FIG. 1 is a block diagram of a communication system according to the present application.
  • the data transmission method provided by the present application is applicable to the communication system shown in FIG. 1 , and the communication system may be an LTE communication system, or may be other communication systems in the future (for example, a 5G communication system), which is not limited herein.
  • the communication system includes: a network device and a terminal device. among them,
  • Network device may be a base station, or an access point, or may refer to a device in the access network that communicates with the wireless terminal over one or more sectors over the air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a Global System of Mobile communication (GSM) or a base transceiver station (BTS) in Code Division Multiple Access (CDMA), or may be a wideband code division multiple access (
  • the base station (nodeB, NB) in the Wideband Code Division Multiple Access (WCDMA) may also be an evolved base station (eNB or eNodeB) in Long Term Evolution (LTE), or a relay station or an access point. , or a base station in a future 5G network, etc., is not limited herein.
  • Terminal device It can be a terminal device located in the vehicle in the V2X (for example, the vehicle terminal device, the terminal device carried by the user who rides the vehicle), or it can be located at X (X can be a vehicle, infrastructure, network, pedestrian, etc.)
  • the terminal device on it may be the vehicle terminal itself or X itself.
  • the terminal device referred to herein may be a wireless terminal or a wired terminal, and the wireless terminal may be a device that provides voice and/or other service data connectivity to the user, a handheld device with wireless connection function, or a wireless modem. Other processing equipment.
  • the wireless terminal can communicate with one or more core networks via a radio access network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal
  • RAN radio access network
  • a mobile terminal such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal
  • RAN may be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with a wireless access network.
  • PCS personal communication service
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • a wireless terminal may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, a remote terminal, and a remote terminal.
  • the access terminal, the user terminal, the user agent, and the user equipment are not limited herein.
  • FIG. 2 is a schematic diagram 1 of a scenario of V2X communication.
  • a direct link can be used for communication between V2Xs. That is, the vehicle (ie, the terminal device located on the vehicle, abbreviated as: the vehicle terminal device) and the X (the terminal device located on the X) can use the resources configured by the network device to directly communicate through the through link without going through the network. Equipment transfer.
  • Figure 2 shows a schematic diagram of communication using a straight-through link between V2Vs.
  • FIG. 3 is a schematic diagram 2 of a scenario of V2X communication.
  • FIG. 4 is a schematic diagram 3 of a scenario of V2X communication.
  • the network device can dynamically or semi-dynamically schedule resources for the vehicle terminal device based on the request message sent by the vehicle terminal device. In this way, the vehicle terminal device can communicate with the terminal device located on the X through the through link using the resources scheduled by the network device.
  • FIG. 3 is a schematic diagram 2 of a scenario of V2X communication.
  • FIG. 4 is a schematic diagram 3 of a scenario of V2X communication.
  • the network device can dynamically or semi-dynamically schedule resources for the vehicle terminal device based on the request message sent by the vehicle terminal device. In this way, the vehicle terminal device can communicate with the terminal device located on the X through the through link using the resources scheduled by the network device.
  • the network device can use the system information block (SIB) message or the radio resource control (RRC) signaling as the vehicle.
  • SIB system information block
  • RRC radio resource control
  • the terminal device configures a resource pool or a resource pool pre-configured on the terminal device. In this way, the vehicle terminal device can acquire resources from the resource pool and communicate with the terminal device located on X through the through link.
  • the vehicle terminal device may acquire resources from the resource pool in a randomly selected manner or in a manner based on a listening reservation mechanism.
  • V2X uses a straight-through link for communication, how to realize repeated transmission of data is an urgent problem to be solved.
  • the present application provides a data transmission method
  • the first terminal device may be configured to indicate, according to the network device, the first terminal device to use the n logical channels to transmit the same packet data convergence protocol (PDCP).
  • the first information of the same to-be-sent data of the entity may send n media access controls carrying the same to-be-sent data in the same PDCP entity to the second terminal device through the through-link, using n different carriers (
  • the media access control (MAC) protocol data unit (PDU) achieves the purpose of repeatedly transmitting the same to-be-sent data to the second terminal device through the through-link.
  • the second terminal device when the first terminal device is a terminal device located in the vehicle in the V2X, the second terminal device may be a terminal device located on the X in the V2X.
  • the first terminal device when the first terminal device is a terminal device located in X in the V2X, the second terminal device may be a terminal device located in the vehicle in the V2X.
  • the data transmission method provided by the present application includes, but is not limited to, the application scenario of the above V2X, as long as it involves all scenarios for communicating through a through link, for example, a device to device (D2D) application.
  • the data transmission method provided by the present application can be used in the application scenario of the machine to the machine to the machine (M2M), and details are not described herein again.
  • FIG. 5 is a signaling flowchart of a data transmission method provided by the present application. This embodiment relates to the first terminal device repeatedly transmitting the same PDCP entity to the second terminal device according to the first information indicating that the first terminal device uses the n logical channels to transmit the same to-be-transmitted data of the same PDCP entity.
  • the process of sending data may include:
  • the network device sends the first information to the first terminal device.
  • the first information is used to indicate that the first terminal device uses the n logical channels to transmit the same to-be-sent data of the same packet data convergence protocol PDCP entity, where the first information includes the first element, and the first element includes one or more identifiers: The data priority identifier of the data to be sent, the service type identifier to which the data to be sent belongs, the quality of service stream identifier to which the data to be sent belongs, the destination address identifier of the data to be sent, the logical channel group identifier where n logical channels are located, n n carrier identifiers corresponding to logical channels, identifiers of PDCP entities; n is a positive integer greater than 1. In this embodiment, the value of the above n is not limited, and the above n may be 2, for example.
  • the first terminal device receives the first information.
  • the first terminal device encapsulates n data of n logical channels into n MAC PDUs according to the first information.
  • the n data includes: the same to-be-sent data of the same PDCP entity.
  • the first terminal device sends the n MAC PDUs to the second terminal device by using a through link.
  • n MAC PDUs are carried by n carriers.
  • the network device may activate the first terminal device to repeatedly transmit the same to-be-sent data of the same PDCP entity to the second terminal device by using the first information, thereby effectively controlling data repeated transmission of the first terminal device.
  • the network device may send the first information to a first terminal device in a MAC control element (CE) of the MAC PDU, or the network device may carry the first information in an RRC message.
  • the command is sent to the first terminal device, or the network device may carry the first information in a system information block (SIB) message and send the message to the first terminal device.
  • SIB system information block
  • FIG. 6 is a schematic structural diagram of a protocol stack provided by the present application.
  • the first terminal device may send the same to-be-sent data of the same PDCP entity to n wireless links according to the first information.
  • a radio link control (RLC) entity wherein each RLC entity corresponds to a logical channel. That is, the first terminal device may send the same to-be-sent data of the same PDCP entity to the n logical channels corresponding to the one of the n RLC entities.
  • the n data of the n logical channels all include the same to-be-sent data of the same PDCP entity.
  • the MAC layer of the first terminal device may encapsulate the n data of the n logical channels into n MAC PDUs, respectively.
  • the n data are respectively from the n logical channels, and data from different logical channels of the n logical channels are encapsulated in different MAC PDUs.
  • encapsulating one data in one MAC PDU means that the data is included in the MAC PDU.
  • the physical layer (PHY) layer of the first terminal device may send n MAC PDUs to the second terminal device by using n carriers through the through link, so as to transmit the same PDCP entity to the second terminal device.
  • the purpose of the same data to be sent n times improves the reliability of data transmission and reduces the data transmission delay.
  • the network device can activate the first terminal device to transmit the same to-be-sent data of the same PDCP entity by using n logical channels by using the first information, thereby effectively controlling data repeated transmission of the first terminal device.
  • the data transmission method provided by the present application after receiving the first information sent by the network device for instructing the first terminal device to use the n logical channels to transmit the same to-be-sent data of the same PDCP entity, the first terminal device may pass the through link. And transmitting, by using n different carriers, n MAC PDUs carrying the same to-be-sent data in the same PDCP entity to the second terminal device, to achieve the purpose of repeatedly transmitting the same to-be-sent data to the second terminal device through the through-link .
  • the same to-be-sent data included in the n data of the n logical channels of the first terminal device may be determined according to the identifier carried by the first element. The following is explained by some examples.
  • the data to be sent in the PDCP entity of the first terminal device comes from the upper layer (that is, above the access layer).
  • the upper layer usually assigns a data priority to the data and sends the data to the PDCP entity along with the priority of the data. That is to say, all the data to be sent in the above PDCP entity have corresponding data priorities. Therefore, the first element may include a data priority identifier of the data to be sent, to activate the first terminal device to perform repeated transmission for the data to be sent corresponding to the data priority by using the data priority identifier. In this way, the first terminal device can use the embodiment shown in FIG. 5 to repeatedly transmit the data to be sent corresponding to the data priority.
  • the network device can activate the first terminal device to repeatedly transmit data to be sent for a certain data priority on the PDCP entity.
  • the n data of the n logical channels include: data to be sent of a certain data priority on the PDCP entity.
  • the foregoing first terminal device may have multiple different types of services.
  • the different types of services mentioned above may be services corresponding to different receiving ends and/or different transmitting ends.
  • different types of services mentioned above may be V2V services, V2P services, V2I services, P2V services, P2P services, and P2I services.
  • Wait may be Alternatively, the different types of services mentioned above may also be passed through an application layer identifier carried by the application layer or sent by the upper layer (above the access layer) (for example, ITS-AID: ITS application identifier or PSID: provider service identifier). distinguish.
  • the first element may include the service type identifier to which the data to be sent belongs, to activate the first terminal device to perform repeated transmission for the data to be sent corresponding to the service type by using the service type identifier to which the data to be transmitted belongs.
  • the first terminal device can use the embodiment shown in FIG. 5 to repeatedly transmit the data to be sent corresponding to the service type.
  • the network device can activate the first terminal device to perform repeated transmission for the data to be sent corresponding to a certain service type on the PDCP entity.
  • the n data of the n logical channels include: data to be sent corresponding to a certain service type on the PDCP entity.
  • the QOS flow to which the data to be transmitted belongs has a corresponding relationship with the Qos parameter.
  • the QoS parameter may include at least one of delay, reliability, and priority. Therefore, the first element may include a Qos flow identifier to which the data to be sent belongs, to activate the first terminal device to repeatedly transmit data to be sent corresponding to the QoS flow by using a Qos flow identifier to which the data to be sent belongs. In this way, the first terminal device may use the embodiment shown in FIG. 5 to repeatedly transmit the data to be sent corresponding to the QoS flow.
  • the network device can activate the first terminal device to repeatedly transmit data to be sent for a certain Qos flow on the PDCP entity.
  • the n data of the n logical channels include: data to be sent of a certain Qos flow on the PDCP entity.
  • the first element may include a destination address identifier of the data to be sent, to activate the first terminal device to repeatedly transmit the data to be sent sent to the destination address by using the destination address identifier of the data to be sent.
  • the first terminal device can repeatedly transmit the data to be sent sent to the destination address by using the embodiment shown in FIG. 5 above.
  • the network device can activate the first terminal device to perform repeated transmission on the data to be sent to be sent to a certain second terminal device.
  • the n data of the n logical channels include: data to be sent to be sent to a second terminal device on the PDCP entity.
  • the destination address may be in a mapping relationship with the service type. Therefore, the first element may include a destination address identifier of the data to be sent, to activate the first terminal device to repeatedly transmit data to be sent of a certain service type sent to the second terminal device by using the destination address identifier of the data to be sent. .
  • the first terminal device can use the embodiment shown in FIG. 5 to repeatedly transmit the data to be sent of a certain service type sent to the second terminal device.
  • the network device can activate the first terminal device to perform repeated transmission on the data to be sent of a certain service type of the second terminal device.
  • the n data of the n logical channels include: data to be sent on the PDCP entity to be sent to a certain type of second terminal device.
  • the foregoing first element may include an identifier of a PDCP entity to activate, by the identifier of the PDCP entity, the first terminal device to repeatedly transmit data to be sent on the PDCP entity.
  • the first terminal device can use the embodiment shown in FIG. 5 to repeatedly transmit all data to be sent on the PDCP entity.
  • the network device can activate the first terminal device to perform repeated transmission for all data to be transmitted on a certain PDCP entity.
  • the n data of the n logical channels all include: all data to be sent on a certain PDCP entity.
  • the network device can configure a logical channel group for the connected terminal device by using RRC signaling. Therefore, the first element may include a logical channel group identifier where the n logical channels are located, to pass the n logical channels.
  • the logical channel group identifier activates the first terminal device to use the n logical channels of the logical channel group to repeatedly transmit data to be sent on a PDCP entity.
  • the first terminal device may use the foregoing embodiment shown in FIG. 5 to repeatedly transmit data to be sent on a PDCP entity by using n logical channels of the logical channel group.
  • the network device can activate the first terminal device to use the n logical channels to repeatedly transmit data to be sent on a certain PDCP entity.
  • the n data of the n logical channels all include: all data to be sent on a certain PDCP entity.
  • the first terminal device may Repeating transmission of data to be transmitted on one PDCP entity by using two logical channels of the logical channel group, and using two logical channels of the remaining three logical channels of the logical channel group to perform data to be sent on another PDCP entity Repeat the transfer.
  • the foregoing first element may include n carrier identifiers to activate, by the n carrier identifiers, the first terminal device to use the n logical channels to repeatedly transmit data to be sent on a PDCP entity.
  • the first terminal device may use the foregoing embodiment shown in FIG. 5 to identify the to-be-transmitted data on a certain PDCP entity by using n logical channels by using the n carriers corresponding to the n carriers.
  • the network device can activate the first terminal device to use the n logical channels to repeatedly transmit data to be sent on a certain PDCP entity.
  • the n data of the n logical channels all include: all data to be sent on a certain PDCP entity.
  • the present application does not limit the n logical channels used by the first terminal device to repeatedly transmit data to be transmitted on the PDCP entity.
  • the foregoing first element may further include: a data priority identifier of the data to be sent and n carrier identifiers to activate the first terminal device to identify the n corresponding by the n carrier identifiers by using the data priority identifier and the n carrier identifiers.
  • the carriers are repeatedly transmitted for the data to be transmitted corresponding to the data priority.
  • the first terminal device may use the n-carrier corresponding to the n carriers to perform repeated transmission on the data to be transmitted corresponding to the data priority.
  • the network device can activate the first terminal device to use the n logical channels to repeatedly transmit data to be sent on a certain PDCP entity.
  • the n data of the n logical channels include: data to be sent of a certain data priority on the PDCP entity.
  • the network device and the first terminal device are pre-configured with a data priority and a n carrier. Therefore, the network device may use the first element to carry a data priority identifier of the data to be sent. The information is used to activate the first terminal device to perform repeated transmission on the data to be transmitted corresponding to the data priority by using the n carriers corresponding to the data priority.
  • the corresponding relationship between the data priority of the first terminal device and the n carriers may be dynamically or semi-dynamically configured by the network device through the RRC signaling, or may be broadcast to the first terminal device by using the SIB message by the network device. It may be pre-configured on the first terminal device, and may also be sent to the first terminal device or the like in other manners for the network device, which is not limited thereto.
  • the first element may further include: a data priority identifier of the data to be sent, a logical channel group identifier where the n logical channels are located, and n carrier identifiers, to activate the first terminal device by using the identifiers
  • the n carriers corresponding to the n carriers identify the to-be-transmitted data corresponding to the data priority by using the n logical channels of the logical channel group.
  • the first terminal device may use the n carriers that are identified by n carriers, and use n logical channels of the logical channel group to perform data to be sent corresponding to the data priority. Repeat the transfer.
  • the network device can activate the first terminal device to use the n logical channels to repeatedly transmit data to be sent on a certain PDCP entity.
  • the n data of the n logical channels include: data to be sent of a certain data priority on the PDCP entity.
  • the first element may activate the first terminal device to transmit the same PDCP by using n logical channels by carrying a combination of any of the foregoing enumerated identifiers.
  • the same data to be sent of the entity is implemented in a similar manner to the technical effect, and will not be described again.
  • the multiple identifiers may be different types of identifiers.
  • the first element may simultaneously carry the data priority identifier of the data to be sent and the destination address identifier of the data to be sent.
  • the multiple identifiers may also be the same type of identifiers.
  • the first element may carry the data priority identifier 1 and the data priority identifier 2, and the implementation manner is similar to the technical effect, and details are not described herein again.
  • the foregoing first information may be used in some cases to indicate that the first terminal device uses the n logical channels to transmit the same to-be-sent data of the same PDCP entity, and in other cases, may be used. Instructing the first terminal device to stop transmitting the same to-be-sent data of the same PDCP entity using n logical channels. In this way, the first information can be made in such a manner that the network device can flexibly activate or deactivate the first terminal device to transmit the same to-be-sent data of the same PDCP entity by using n logical channels through the first information, thereby The data repeat transmission of the first terminal device is effectively controlled.
  • the foregoing first information may further include a second element, to implement the foregoing first information by using the second element. That is, when the second element is the first value, the first information is used to indicate that the first terminal device uses the n logical channels to transmit the same to-be-sent data of the same PDCP entity. When the first element is the second value, the first information is used to indicate that the first terminal device stops using the n logical channels to transmit the same to-be-sent data of the same PDCP entity. For example, when the first value is 0, the second value may be 1. When the first value is 1, the second value may be 0.
  • the first value is 0, and the second value is 1 as an example.
  • the first element includes: a data priority identifier of the data to be sent.
  • the first information is used to activate the first terminal device to perform repeated transmission on the data to be sent corresponding to the data priority.
  • the second element takes a value of 1
  • the first information is used to deactivate the first terminal device to perform repeated transmission on the data to be sent corresponding to the data priority. That is, the data to be transmitted corresponding to the data priority is repeatedly transmitted by using n logical channels, and the data to be transmitted corresponding to the data priority is still transmitted by using one logical channel.
  • the first information is used to indicate that the first terminal device uses the n logical channels to transmit the same to-be-sent data of the same PDCP entity.
  • the cumulative number of times is a value of the second type
  • the first information is used to indicate that the first terminal device stops using the n logical channels to transmit the same to-be-sent data of the same PDCP entity.
  • the value of the first type may be an odd number
  • the value of the second type may be an even number
  • the value of the first type may be an even number
  • the value of the second type may be an odd number or the like.
  • the value of the first type is an odd number, and the value of the second type is an even number. If the cumulative number of times the first terminal device receives the first information is 1, the first information is used to indicate the first The terminal device uses n logical channels to transmit the same to-be-sent data of the same PDCP entity. Assuming that the cumulative number of times the first terminal device receives the first information is 2, the first information is used to deactivate the first terminal device to perform repeated transmission for the data to be sent corresponding to the data priority. That is, the data to be transmitted corresponding to the data priority is repeatedly transmitted by using n logical channels, and the data to be transmitted corresponding to the data priority is still transmitted by using one logical channel.
  • the first element may comprise a bitmap, wherein one bit in the bitmap corresponds to one of the first elements. That is, the identifier carried by the first element is represented by a fixed bit. Taking the first element including the data priority identifier of the data to be transmitted as an example, it is assumed that there are a total of eight data priorities, which are data priority 0 to data priority 7. As shown in Table 1, in the bitmap, each bit can be sequentially associated with a data priority in the order of data priority from small to large. Of course, each bit can be sequentially associated with a data priority according to the order of the data priorities from the largest to the smallest, and details are not described herein again.
  • the first terminal device may be instructed to use n logical channels to transmit data to be transmitted corresponding to the data priority corresponding to the bit.
  • the first terminal device may be instructed to stop using the n logical channels to transmit the data to be transmitted corresponding to the data priority corresponding to the bit.
  • the second value may be 1.
  • the first value is 1, the second value may be 0.
  • the first information is used to activate the first terminal device to repeatedly transmit data to be sent, such as data priority 1, data priority 2, data priority 4, data priority 6, and data priority 7. That is, the first terminal device needs to transmit data to be transmitted with data priority 1 using n logical channels, transmit data to be transmitted with data priority 2 using n logical channels, and transmit data priority 4 to be transmitted using n logical channels. Data, using n logical channels to transmit data to be transmitted with data priority 6, and using n logical channels to transmit data to be transmitted with data priority 7.
  • the first information when the first information is used to indicate that the first terminal device uses the n logical channels to transmit the same to-be-sent data of the same PDCP entity, the first information may further include: a third element.
  • the third element is used to indicate that the first terminal device uses the n logical channels to transmit the maximum duration of the same to-be-sent data of the same PDCP entity. That is, after receiving the first information carrying the third element, the first terminal device may use the n logical channels to transmit the same to-be-sent data of the same PDCP entity within the maximum duration, after the maximum duration is exceeded. Automatically stop using the n logical channels to transmit the same data to be transmitted of the same PDCP entity.
  • the network device can semi-dynamically activate the first terminal device to transmit the same to-be-sent data of the same PDCP entity using n logical channels.
  • the first terminal device may identify whether the maximum duration is exceeded by starting a timer, and details are not described herein.
  • the first information when the first information is used to indicate that the first terminal device stops using the n logical channels to transmit the same to-be-sent data of the same PDCP entity, the first information may also include the third element.
  • the third element is used to indicate that the first terminal device stops using the n logical channels to transmit the maximum duration of the same to-be-sent data of the same PDCP entity. That is, after receiving the first information carrying the third element, the first terminal device may stop using the n logical channels to transmit the same to-be-sent data of the same PDCP entity within the maximum duration, beyond the maximum duration. After that, the same to-be-sent data of the same PDCP entity is continuously transmitted using n logical channels. In this way, the network device can semi-dynamically deactivate the first terminal device to transmit the same to-be-sent data of the same PDCP entity using n logical channels.
  • the foregoing first information may further include only the third element, to indicate, by using the third element, that the first terminal device uses the n logical channels to transmit the maximum duration of the same to-be-sent data of the same PDCP entity, And activating the first terminal device to transmit the same to-be-sent data of the same PDCP entity by using n logical channels.
  • the network device can reduce the signaling overhead while activating the first terminal device to use the n logical channels to repeatedly transmit data to be sent on a certain PDCP entity.
  • the n data of the n logical channels include: data to be sent of a certain data priority on the PDCP entity.
  • the first terminal device is responsible for establishing and maintaining the logical channel of the first terminal device when the first terminal device communicates with the second terminal device through the through link, so the network device cannot configure the PDCP entity and logic for the first terminal device.
  • the correspondence between the channels indicates which logical channels are used by the first terminal device for data repetition transmission. Therefore, the network device may actively send the first information to the first terminal device according to the usage of the network resource, and flexibly activate or deactivate the first terminal device to use the n logical channels to transmit the same to-be-sent data of the same PDCP entity, thereby The data repeat transmission of the first terminal device is effectively controlled.
  • the first element carries the data priority identifier as an example.
  • the network device may send, by using the first terminal device, the first terminal device to stop using the n logical channels to transmit one or more.
  • the network device may send the first information of the to-be-sent data for indicating that the first terminal device transmits the one or more data priorities by using the n logical channels to the first terminal device.
  • the foregoing first information may be actively sent by the network device to the first terminal device according to the usage of the network resource.
  • the foregoing first information may also be sent to the first terminal device by the network device based on the request of the first terminal device. If the first information is sent to the first terminal device by the network device based on the request of the first terminal device, the method may further include:
  • the first terminal device sends the second information to the network device, where the second information is used to request the first terminal device to use the n logical channels to transmit the same to-be-sent data of the same PDCP entity, or to request to deactivate the first terminal device.
  • the n logical channels transmit the same to-be-sent data of the same PDCP entity.
  • the first terminal device may send, to the network device, the same to be used to request to activate the first terminal device to transmit the same PDCP entity by using n logical channels. Transmitting the second information of the data to request the network device to activate the first terminal device to transmit the same to-be-sent data of the same PDCP entity by using n logical channels.
  • the network device may determine, according to the second information, and the network resource usage, whether the first terminal device is activated to transmit the same to-be-sent data of the same PDCP entity by using n logical channels.
  • the network device may send, to the first terminal device, the same to be used by the first terminal device to use the n logical channels to transmit the same PDCP entity.
  • the first information of the data is sent, and will not be described again.
  • the first terminal device may send, to the network device, a request to deactivate the first to-be-transmitted data that the first terminal device uses the n logical channels to transmit the same PDCP entity.
  • the second information is to request the network device to deactivate the first to-be-transmitted data of the same PDCP entity by using the n logical channels by the first terminal device.
  • the network device may determine, according to the second information, whether to deactivate the first terminal device to use the n logical channels to transmit the same to-be-sent data of the same PDCP entity.
  • the network device may send, to the first terminal device, the first terminal device to stop using the n logical channels to transmit the same PDCP entity.
  • the first information of the same data to be sent is not described herein.
  • the foregoing second information may include one or more of the following: a data priority identifier of the data to be sent, a type identifier of the service to which the data to be sent belongs, a quality of service flow identifier to which the data to be sent belongs, and data to be sent
  • the network device may send the foregoing to indicate that the first terminal device uses the n logical channels to transmit the same PDCP.
  • the network device may send the foregoing to indicate that the first terminal device stops using the n logical channels for transmission.
  • the network device may also send the first information carrying a flag bit, activate or deactivate the first terminal device to use the n logical channels to transmit the same to-be-sent data of the same PDCP entity.
  • the flag bit is the first value
  • the first information is used to activate the first terminal device to transmit the same to-be-sent data of the same PDCP entity by using n logical channels.
  • the flag bit is the second value
  • the first information is used to deactivate the first to-be-transmitted data of the same PDCP entity by using the n logical channels by the first terminal device. That is, the data to be transmitted is repeatedly transmitted using n logical channels, and the data to be transmitted is still transmitted by using one logical channel. For example, when the first value is 1, the second value is 0, and when the first value is 0, the second value is 1.
  • the foregoing network device may also send the first information in the form of a MAC CE to activate or deactivate the first terminal device to transmit the same to-be-sent data of the same PDCP entity by using n logical channels.
  • the MAC PDU sent by the network device to the terminal device includes the first MAC CE
  • the foregoing first information is used to activate the first terminal device to transmit the same to-be-sent data of the same PDCP entity by using n logical channels.
  • the MAC PDU sent by the network device to the terminal includes the second MAC CE
  • the foregoing first information is used to deactivate the first to-be-transmitted data of the same PDCP entity by using the n logical channels.
  • the network device may activate or deactivate the first to be transmitted data of the same PDCP entity by using the n logical channels by using the same value of the same MAC CE.
  • the MAC CE is the first value, it is used to instruct the first terminal device to use the n logical channels to transmit the same to-be-sent data of the same PDCP entity.
  • the MAC CE is the second value, it is used to instruct the first terminal device to stop using the n logical channels to transmit the same to-be-sent data of the same PDCP entity. For example, when the first value is 0011, the second value is 0100.
  • the foregoing first information may also be activated or deactivated by using a carrying flag and a third element, or by using different MAC CEs and third elements, by using different values of the same MAC CE and combining the third elements.
  • a terminal device uses n logical channels to transmit the same data to be transmitted of the same PDCP entity, and activates or deactivates the maximum duration of the same data to be transmitted transmitted by the terminal device using n logical channels. .
  • the network device sends the first information to the first terminal device based on the request of the first terminal device
  • the first information is introduced and illustrated.
  • the foregoing first information is also applicable to a scenario in which the network device actively sends the first information to the first terminal device according to the usage of the network resource, and details are not described herein.
  • the manner in which the network device activates the first terminal device to transmit the same to-be-sent data of the same PDCP entity by using n logical channels is flexible, and the data transmission is repeatedly controlled based on the effective control of the data transmission of the first terminal device.
  • the network device can flexibly activate or deactivate the first terminal device to transmit the same to-be-sent data of the same PDCP entity by using n logical channels by using the first information, thereby effectively controlling the first terminal device. Data is repeatedly transmitted on the through link.
  • the first terminal device when the first terminal device communicates with the second terminal device through the through link, the first terminal device is responsible for establishing and maintaining the logical channel of the first terminal device.
  • the second terminal device is responsible for establishing and maintaining the logical channel of the second terminal device. Therefore, when the first terminal device repeatedly transmits the same to-be-sent data of the same PDCP entity to the second terminal device by using the n logical channels, the first terminal device needs to notify the second terminal device of the correspondence relationship between the n logical channels and the same PDCP entity. After the second terminal device receives the n data of the n logical channels (including the same to be sent data), the n data may be processed by the same PDCP entity to implement the first terminal device and the second terminal. Data is transferred repeatedly between devices.
  • FIG. 7 is a signaling flowchart of another data transmission method provided by the present application.
  • the embodiment relates to a process in which the first terminal device notifies the correspondence relationship between the n logical channels and the same PDCP entity to the second terminal device.
  • the method may include:
  • the first terminal device encapsulates n data of n logical channels into n MAC PDUs.
  • the first terminal device sends the n MAC PDUs to the second terminal device through the through link, and the retransmission identifier corresponding to the n data.
  • n MAC PDUs are carried by n carriers.
  • the second terminal device receives the n MAC PDUs, and the retransmission identifier corresponding to the n data.
  • the second terminal device processes the n data by using the same PDCP entity according to the retransmission identifier corresponding to the n data.
  • the first terminal device may carry the retransmission identifier corresponding to the n data in the n MAC PDUs, and send the same to the second terminal device along with the n data, or separately send to the second terminal.
  • the retransmission identifier is also sent to the n RLC entities along with the to-be-sent data.
  • the n data of the n logical channels corresponding to the n RLC entities may include: the same to-be-sent data of the same PDCP entity, and the retransmission identifier of the n data.
  • the first terminal device may separately encapsulate the n data of the n logical channels into n MAC PDUs, to send the data to be sent through the n MAC PDUs, and send the retransmission identifier of the data to be sent to the first Two terminal devices.
  • the second terminal device may process the n data including the same to-be-sent data to the same PDCP entity according to the retransmission identifier carried in the n data.
  • the RLC entity of the first terminal device may encapsulate the retransmission identifier in a header of the RLC layer data packet. That is to say, the data included in the logical channel contains a retransmission identifier. In this way, the RLC entity of the second terminal device parses the headers of the n data to determine which PDCP entity to submit the data to.
  • the retransmission identifier may include one or more of the following: an identifier of a PDCP entity to which the data to be sent belongs, a data priority identifier of the data to be sent, a quality of service stream identifier of the to-be-sent data, and a destination address of the to-be-sent data ID, service type identifier corresponding to the data to be sent, and so on.
  • the first terminal device may send the retransmission identifier to the second terminal device in the MAC CE of the at least one MAC PDU of the n MAC PDUs, or the first terminal device may retransmit the identifier, or The first terminal device may send the retransmission identifier to a second terminal device by carrying the retransmission identifier in a separate message, such as a through link SIB message.
  • a separate message such as a through link SIB message.
  • the first terminal device may send a part of the retransmission identifier to the second terminal device in the MAC CE of the at least one MAC PDU of the n MAC PDUs, and carry another part of the information of the retransmission identifier in the at least one
  • the MAC PDU is included in the sub-head corresponding to the MAC SDU in which the data to be transmitted is located, and is sent to the second terminal device.
  • the retransmission identifier may include: an identifier of n logical channels, and/or an identifier of an RLC entity corresponding to one logical channel.
  • the retransmission identifier may include: an identifier of the logical channel 1 and an identifier of the logical channel 2, where the second terminal device receives the 2 MAC PDUs respectively encapsulated data of the 2 logical channels, and the second terminal The device may pass the data of logical channel 1 and the data of logical channel 2 to the same PDCP entity.
  • the first terminal device and the second terminal device are pre-configured with n logical channels used by the first terminal device to transmit the same to-be-sent data of the same PDCP entity. Therefore, after receiving the n MAC PDUs that respectively encapsulate the data of the n logical channels, the second terminal device may forward the data of the n logical channels to the same PDCP entity according to the preset information. deal with.
  • the network device may configure, by using the RRC signaling and the SIB message, the first terminal device and the second terminal device to use the n logical channels used by the first terminal device to transmit the same to-be-sent data of the same PDCP entity, or
  • the n logical channels used when transmitting the same to-be-sent data of the same PDCP entity may be pre-configured on the first terminal device and the second terminal device.
  • the pre-configuration may be that the network device is pre-configured on the terminal device or the terminal device is pre-configured on the terminal device at the factory.
  • the first terminal device may continue to use the preset n logical channels for data retransmission when communicating with the second terminal device.
  • the first terminal device may also send a retransmission identifier to the second terminal device when the data retransmission is performed by using the preset n logical channels, to indicate that the first terminal device uses the preset n logical channels by using the retransmission identifier. Transmitting the same to-be-sent data of the same PDCP entity, or instructing the first terminal device to stop using the preset n logical channels to transmit the same to-be-sent data of the same PDCP entity.
  • the second terminal device can retransmit the identifier to determine whether to pass the data of the n logical channels to the same PDCP entity for processing.
  • the first terminal device can flexibly use the preset n logical channels to transmit data, thereby improving data transmission efficiency.
  • the retransmission identifier may carry only one bit of the flag, so that the first terminal device is used to use the preset n logical channels by using the flag. Transmitting the same to-be-sent data of the same PDCP entity, or instructing the first terminal device to stop using the preset n logical channels to transmit the same to-be-sent data of the same PDCP entity. For example, when the flag bit is 0, the retransmission identifier may indicate that the first terminal device transmits the same to-be-sent data of the same PDCP entity by using the preset n logical channels.
  • the retransmission identifier may indicate that the first terminal device stops using the preset n logical channels to transmit the same to-be-sent data of the same PDCP entity.
  • the retransmission identifier may indicate that the first terminal device transmits the same to-be-sent data of the same PDCP entity by using the preset n logical channels.
  • the retransmission identifier may indicate that the first terminal device stops using the preset n logical channels to transmit the same to-be-sent data of the same PDCP entity.
  • the first terminal device may send the retransmission identifier to the second terminal device in the MAC CE of the at least one MAC PDU of the n MAC PDUs, or the first terminal device may carry the retransmission identifier in the
  • the at least one MAC PDU of the above-mentioned n MAC PDUs is included in a sub-head corresponding to the MAC SDU in which the data to be transmitted is located, and is sent to the second terminal device, or the first terminal device may retransmit the foregoing
  • the identifier is carried in a separate message (for example, a through link SIB message) and sent to the second terminal device or the like.
  • the first terminal device may send, by using the n different carriers, n MAC PDUs carrying the same to-be-sent data in the same PDCP entity to the second terminal device through the through link, and The retransmission identifier corresponding to the n data, so that the second terminal device can process the data of the n MAC PDUs containing the same to be sent data by using the same PDCP entity, and reach the second terminal device through the through link.
  • FIG. 8 is a schematic structural diagram of a terminal device provided by the present application.
  • the terminal device is a first terminal device, and the first terminal device may include: a receiving module 11 , a processing module 12 , and a sending module 13 . among them,
  • the receiving module 11 is configured to receive first information that is sent by the network device, where the first information is used to indicate that the first terminal device uses the n logical channels to transmit the same to-be-sent data of the same PDCP entity, where the first information includes a first element; the first element includes one or more identifiers: a data priority identifier of the data to be sent, a service type identifier to which the data to be sent belongs, and a quality of service flow to which the to-be-sent data belongs The identifier, the destination address identifier of the data to be sent, the logical channel group identifier of the n logical channels, the n carrier identifiers corresponding to the n logical channels, and the identifier of the PDCP entity; A positive integer of 1; for example, the first information is carried in MAC CE or Radio Resource Control RRC signaling.
  • the processing module 12 is configured to encapsulate, according to the first information, n data of the n logical channels into n MAC PDUs, where the n data includes: the data to be sent;
  • the sending module 13 is configured to send the n MAC PDUs to the second terminal device by using a through link, where the n MAC PDUs are carried by using n carriers.
  • the foregoing first information further includes a second element.
  • the second element is the first value
  • the first information is used to indicate that the first terminal device uses the n logical channels to transmit the same to-be-sent data of the same PDCP entity;
  • the element is the second value
  • the first information is used to indicate that the first terminal device stops using the n logical channels to transmit the same to-be-sent data of the same PDCP entity.
  • the first information is used to indicate that the first terminal device uses the n logical channels to transmit the same to-be-sent data of the same packet data convergence protocol PDCP entity, including: the first information.
  • the quality of service flow to which the data to be sent belongs belongs to the reliability of the data to be sent.
  • the quality of service flow identifier to which the to-be-sent data belongs corresponds to the reliability of the to-be-sent data.
  • the first element includes: a bitmap; one bit in the bitmap corresponds to an identifier.
  • the first information further includes: a third element.
  • the third element is used to indicate that the first terminal device uses the n logical channels to transmit the maximum duration of the same to-be-sent data of the same PDCP entity.
  • the sending module 13 is further configured to send the second information, the second information, to the network device before the receiving module 11 receives the first information sent by the network device. And configured to request the first terminal device to use the n logical channels to transmit the same to-be-sent data of the same PDCP entity.
  • the second information includes, for example, one or more of the following: a data priority identifier of the data to be sent, a type identifier of a service to which the data to be sent belongs, and a quality of service flow to which the data to be sent belongs.
  • a data priority identifier of the data to be sent a data priority identifier of the data to be sent
  • a type identifier of a service to which the data to be sent belongs a quality of service flow to which the data to be sent belongs
  • the first terminal device provided by the present application may perform the action of the first terminal device shown in FIG. 5 in the foregoing method embodiment, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • FIG. 9 is a schematic structural diagram of another terminal device provided by the present application.
  • the terminal device is a first terminal device, and the first terminal device may include: a processing module 21 and a sending module 22. among them,
  • the processing module 21 is configured to encapsulate n data of the n logical channels into n MAC PDUs, where the n data includes: the same to-be-sent data of the same PDCP entity, where n is a positive integer greater than one;
  • the sending module 22 is configured to send the n MAC PDUs to the second terminal device through the through link, and the retransmission identifier corresponding to the n data, where the n MAC PDUs are carried by using n carriers.
  • the retransmission identifier may include one or more of the following: the to-be-sent The identifier of the PDCP entity to which the data belongs, the data priority identifier of the data to be sent, the quality of service stream identifier of the data to be sent, the destination address identifier of the data to be sent, and the service type identifier corresponding to the data to be sent. .
  • the retransmission identifier may be carried in a MAC CE of at least one of the n MAC PDUs, or in a subhead corresponding to the MAC SDU where the data to be sent is located.
  • the retransmission identifier may include: an identifier of the n logical channels, and/or an identifier of an RLC entity corresponding to the n logical channels, and the like.
  • the retransmission identifier is used to instruct the first terminal device to transmit the same to-be-sent data of the same PDCP entity by using the preset n logical channels.
  • the first terminal device provided by the present application may perform the action of the first terminal device shown in FIG. 6 in the foregoing method embodiment, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • FIG. 10 is a schematic structural diagram of a network device provided by the present application. As shown in FIG. 10, the network device may include: a sending module 31. among them,
  • the sending module 31 is configured to send the first information to the first terminal device, where the first information is used to indicate that the first terminal device uses the n logical channels to transmit the same to-be-sent data of the same PDCP entity, where the first information is sent.
  • the first element includes: one or more identifiers: a data priority identifier of the data to be sent, a service type identifier to which the data to be sent belongs, and a quality of service to which the data to be sent belongs a flow identifier, a destination address identifier of the to-be-sent data, a logical channel group identifier in which the n logical channels are located, n carrier identifiers corresponding to the n logical channels, and an identifier of the PDCP entity, where n is A positive integer greater than one.
  • the first information is carried in MAC CE or RRC signaling.
  • the first information includes a second element.
  • the second element is the first value
  • the first information is used to indicate that the first terminal device uses the n logical channels to transmit the same to-be-sent data of the same PDCP entity;
  • the element is the second value
  • the first information is used to indicate that the first terminal device stops using the n logical channels to transmit the same to-be-sent data of the same PDCP entity.
  • the first information is used to indicate that the first terminal device uses the n logical channels to transmit the same to-be-sent data of the same packet data convergence protocol PDCP entity, including: the first information.
  • the quality of service flow to which the data to be sent belongs belongs to the reliability of the data to be sent.
  • the quality of service flow identifier to which the to-be-sent data belongs corresponds to the reliability of the to-be-sent data.
  • the first element includes: a bitmap; one bit in the bitmap corresponds to an identifier.
  • the first information further includes: a third element.
  • the third element is used to indicate that the first terminal device uses the n logical channels to transmit the maximum duration of the same to-be-sent data of the same PDCP entity.
  • the network device further includes: a receiving module 32.
  • the receiving module 32 is configured to receive second information sent by the first terminal device before the sending module 31 sends the first information to the first terminal device, where the second information is used to request to activate the first A terminal device uses the n logical channels to transmit the same to-be-sent data of the same PDCP entity.
  • the second information includes one or more of the following: a data priority identifier of the data to be sent, a type identifier of the service to which the data to be sent belongs, and a quality of service flow identifier to which the data to be sent belongs And a destination address identifier of the to-be-sent data, an identifier of the PDCP entity, and a channel congestion degree corresponding to at least one of the n logical channels.
  • the network device provided by the present application can perform the operations of the network device in the foregoing method embodiment, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 11 is a schematic structural diagram of still another terminal device provided by the present application.
  • the terminal device is a second terminal device, and the second terminal device may include: a receiving module 41 and a processing module 42. among them,
  • the receiving module 41 is configured to receive, by using a through link, n MAC PDUs sent by the first terminal device, and a retransmission identifier corresponding to the n data, where the n MAC PDUs are carried by n carriers, where the n
  • Each of the MAC PDUs encapsulates n data of n logical channels, the n data includes: the same to-be-sent data of the same PDCP entity, where n is a positive integer greater than one;
  • the processing module 42 is configured to process the n data by using the same PDCP entity according to the retransmission identifier corresponding to the n data.
  • the retransmission identifier may include one or more of the following: the to-be-sent The identifier of the PDCP entity to which the data belongs, the data priority identifier of the data to be sent, the quality of service stream identifier of the data to be sent, the destination address identifier of the data to be sent, and the service type identifier corresponding to the data to be sent. .
  • the retransmission identifier may be carried in a MAC CE of at least one of the n MAC PDUs, or in a subhead corresponding to the MAC SDU in which the data to be sent is located.
  • the retransmission identifier may include: an identifier of the n logical channels, and/or an identifier of an RLC entity corresponding to the n logical channels, and the like.
  • the retransmission identifier is used to instruct the first terminal device to transmit the same to-be-sent data of the same PDCP entity by using the preset n logical channels.
  • the second terminal device provided by the present application may perform the action of the second terminal device in the foregoing method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • the actual implementation of the above sending module may be a transmitter, and the receiving module may be a receiver when actually implemented, and the processing module may be implemented by software in the form of a processing component call; or may be implemented in the form of hardware.
  • the processing module may be a separately set processing element, or may be integrated in one of the above-mentioned devices, or may be stored in the memory of the above device in the form of program code, by a processing element of the above device. Call and execute the functions of the above processing module.
  • all or part of these modules can be integrated or implemented independently.
  • the processing elements described herein can be an integrated circuit that has signal processing capabilities. In the implementation process, each step of the above method or each of the above modules may be completed by an integrated logic circuit of hardware in the processor element or an instruction in a form of software.
  • the above modules may be one or more integrated circuits configured to implement the above methods, such as one or more application specific integrated circuits (ASICs), or one or more microprocessors (digital) Signal processor, DSP), or one or more field programmable gate arrays (FPGAs).
  • ASICs application specific integrated circuits
  • DSP digital signal processor
  • FPGAs field programmable gate arrays
  • the processing component may be a general purpose processor, such as a central processing unit (CPU) or other processor that can call the program code.
  • CPU central processing unit
  • these modules can be integrated and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • FIG. 12 is a schematic structural diagram of a device provided by the present application.
  • the device may be a chip, and the chip includes: a module or unit for performing the action of the first terminal device shown in FIG. 5, for example, a receiving module 51 (also referred to as a receiving unit).
  • the processing module 52 (which may also be referred to as a processing unit), the transmitting module 53 (which may also be referred to as a transmitting unit), and the like are similar in implementation principle and technical effects, and are not described herein again.
  • FIG. 13 is a schematic structural diagram of another apparatus provided by the present application.
  • the device may be a chip including: a module or unit for performing the action of the first terminal device shown in FIG. 7 above, for example, a processing module 61 (which may also be referred to as a processing unit).
  • the transmitting module 62 (also referred to as a transmitting unit) and the like have similar implementation principles and technical effects, and are not described herein again.
  • FIG. 14 is a schematic structural diagram of still another apparatus provided by the present application.
  • the device may be a chip, and the chip includes: a module or unit for performing the action of the network device shown in FIG. 5 above, for example, a receiving module 71 (also referred to as a receiving unit), and transmitting
  • the module 72 also referred to as a transmitting unit
  • FIG. 14 has similar implementation principles and technical effects, and are not described herein again.
  • FIG. 15 is a schematic structural diagram of still another apparatus provided by the present application.
  • the device may be a chip, and the chip includes: a module or unit for performing the action of the second terminal device shown in FIG. 7 above, for example, a receiving module 81 (also referred to as a receiving unit).
  • the processing module 82 also referred to as a processing unit
  • FIG. 16 is a schematic structural diagram of still another terminal device provided by the present application.
  • the terminal device is a first terminal device.
  • the first terminal device may include a processor 91 (e.g., a CPU), a memory 92, a receiver 93, a transmitter 94; a receiver 93 and a transmitter 94 are each coupled to the processor 91, and the processor 91 controls the reception of the receiver 93.
  • the processor 91 controls the transmission operation of the transmitter 94.
  • Memory 92 may include high speed RAM memory, and may also include non-volatile memory NVM, such as at least one disk memory, in which various instructions may be stored for performing various processing functions and implementing the method steps of the present application.
  • the first terminal device involved in the present application may further include: a power source 95, a communication bus 96, and a communication port 97.
  • the receiver 93 and the transmitter 94 may be integrated in the transceiver of the first terminal device, or may be an independent transceiver antenna on the first terminal device.
  • Communication bus 96 is used to implement communication connections between components.
  • the communication port 97 is used to implement connection communication between the first terminal device and other peripheral devices.
  • the memory 92 is used to store computer executable program code, and the program code includes instructions.
  • the instructions cause the processor 91 to execute the first terminal device shown in FIG. 5 in the foregoing method embodiment.
  • the action of the processing causes the receiver 93 to perform the action of receiving the first terminal device shown in FIG. 5 in the foregoing method embodiment, so that the transmitter 94 performs the sending of the first terminal device shown in FIG. 5 in the foregoing method embodiment.
  • the action of the action is similar to the technical effect, and will not be described here.
  • FIG. 17 is a schematic structural diagram of still another terminal device provided by the present application.
  • the terminal device is a first terminal device.
  • the first terminal device may include a processor 101 (eg, a CPU), a memory 102, and a transmitter 104; the transmitter 104 is coupled to the processor 101, and the processor 101 controls the transmitting action of the transmitter 104.
  • Memory 102 may include high speed RAM memory, and may also include non-volatile memory NVM, such as at least one disk memory, in which various instructions may be stored for performing various processing functions and implementing the method steps of the present application.
  • the first terminal device involved in the present application may further include: a receiver 103, a power source 105, a communication bus 106, and a communication port 107.
  • the receiver 103 and the transmitter 104 may be integrated in the transceiver of the first terminal device, or may be an independent transceiver antenna on the first terminal device.
  • Communication bus 106 is used to implement a communication connection between components.
  • the communication port 107 is configured to implement connection communication between the first terminal device and other peripheral devices.
  • the memory 102 is used to store computer executable program code, and the program code includes instructions.
  • the instructions When the processor 101 executes the instructions, the instructions cause the processor 101 to execute the first terminal device shown in FIG. 6 in the foregoing method embodiment.
  • the action of the processing is such that the transmitter 104 performs the action of the first terminal device shown in FIG. 6 in the foregoing method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 18 is a schematic structural diagram of another network device provided by the present application.
  • the network device may include a processor 111 (e.g., a CPU), a memory 112, a receiver 113, and a transmitter 114.
  • the receiver 113 and the transmitter 114 are each coupled to a processor 111, and the processor 111 controls reception.
  • the processor 111 controls the transmission operation of the transmitter 114.
  • Memory 112 may include high speed RAM memory, and may also include non-volatile memory NVM, such as at least one disk memory, in which various instructions may be stored for performing various processing functions and implementing the method steps of the present application.
  • the network device involved in the present application may further include: a power source 115, a communication bus 116, and a communication port 117.
  • the receiver 113 and the transmitter 114 can be integrated in the transceiver of the network device, or can be an independent transceiver antenna on the network device.
  • Communication bus 116 is used to implement a communication connection between components.
  • the communication port 117 is used to implement connection communication between the network device and other peripheral devices.
  • the above memory 112 is used to store computer executable program code, and the program code includes instructions; when the processor 111 executes the instructions, the instructions cause the processor 111 to control the transmitter 114 to perform the transmission of the network device in the above method embodiment.
  • the action, the control receiver 113 performs the action of receiving the network device in the foregoing method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 19 is a schematic structural diagram of still another terminal device provided by the present application.
  • the terminal device is a second terminal device.
  • the second terminal device may include a processor 121 (for example, a CPU), a memory 122, and a receiver 123.
  • the receiver 123 is coupled to the processor 121, and the processor 121 controls the receiving action of the receiver 123.
  • Memory 122 may include high speed RAM memory, and may also include non-volatile memory NVM, such as at least one disk memory, in which various instructions may be stored for performing various processing functions and implementing the method steps of the present application.
  • the network device involved in the present application may further include: a transmitter 124, a power source 125, a communication bus 126, and a communication port 127.
  • the receiver 123 and the transmitter 124 may be integrated in the transceiver of the network device, or may be an independent transceiver antenna on the network device.
  • Communication bus 126 is used to implement a communication connection between components.
  • the communication port 127 is used to implement connection communication between the network device and other peripheral devices.
  • the memory 122 is used to store computer executable program code, and the program code includes instructions.
  • the instruction causes the processor 121 to control the transmitter 124 to execute the second terminal device in the foregoing method embodiment.
  • the action of the processing is such that the receiver 123 performs the action of receiving the second terminal device in the foregoing method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • the present application further provides a communication system, which includes the first terminal device, the network device, and the second terminal device described in the foregoing embodiments, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • a computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, computer instructions can be wired from a website site, computer, server or data center (eg Coax, fiber, digital subscriber line (DSL) or wireless (eg, infrared, wireless, microwave, etc.) is transmitted to another website, computer, server, or data center.
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • Useful media can be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, DVD), or semiconductor media (eg, solid state disk (SSD)).

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Abstract

本申请提供一种数据传输方法、终端设备和网络设备，该方法包括：第一终端设备接收网络设备发送的第一信息，第一信息的第一元素包括下述一个或多个标识：待发送数据的数据优先级标识、待发送数据所属的业务类型标识、待发送数据所属的服务质量流标识、待发送数据的目的地址标识、n个逻辑信道所在的逻辑信道组标识、n个逻辑信道对应的n个载波标识、PDCP实体的标识；第一终端设备根据第一信息，将n个逻辑信道的n个包括待发送数据的数据分别封装到n个MAC PDU；第一终端设备通过直通链路向第二终端设备发送n个使用n个载波承载的MAC PDU。本申请能够使V2X之间在采用直通链路进行通信时，实现数据的重复传输。

Description

数据传输方法、终端设备和网络设备
本申请要求于2017年09月21日提交中国国家知识产权局、申请号为201710860283.0、申请名称为“数据传输方法、终端设备和网络设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术，尤其涉及一种数据传输方法、终端设备和网络设备。
背景技术
车联网系统是以车内网、车际网和车载移动互联网为基础，按照约定的通信协议和数据交互标准，在车与X(vehicle to X，V2X)之间进行无线通讯和信息交换的大系统网络。通过V2X之间的通信，车联网系统能够达到提高道路安全和交通效率的目的。其中，上述所说的V2X可以为车辆与车辆(vehicle to vehicle，V2V)、车辆与网络(vehicle to network，V2N)、车辆与基础设施(vehicle-to-infrastructure，V2I)、车辆与行人(vehicle to pedestrian，V2P)等。即X可以为车辆、基础设施、网络、行人等。
由于蜂窝技术具有时延短、速度快、覆盖率广泛、容量大、可靠性高等优势，因此，车联网中的V2X之间采用蜂窝技术进行通信成为当前的主要趋势。目前，V2X之间可以采用蜂窝技术，使用直通链路(也称为侧向链路、sidelink等)进行通信。即，车与X之间可以使用网络设备调度或者配置的资源，或者，车与X之间使用预配置的资源，通过直通链路直接进行通信，不需要经过网络设备中转。
目前，当V2X采用直通链路进行通信时，如何实现数据的重复传输是一个亟待解决的问题。
发明内容
本申请提供一种数据传输方法、终端设备和网络设备，能够使V2X之间采用直通链路进行通信时，实现数据的重复传输。
第一方面提供一种数据传输方法，该方法包括：
第一终端设备接收网络设备发送的第一信息，所述第一信息用于指示所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据，所述第一信息包括第一元素；所述第一元素包括下述一个或多个标识：所述待发送数据的数据优先级标识、所述待发送数据所属的业务类型标识、所述待发送数据所属的服务质量流标识、所述待发送数据的目的地址标识、所述n个逻辑信道所在的逻辑信道组标识、所述n个逻辑信道对应的n个载波标识、所述PDCP实体的标识；所述n为大于1的正整数；
所述第一终端设备根据所述第一信息，将所述n个逻辑信道的n个数据分别封装到n个媒体接入控制MAC协议数据单元PDU，所述n个数据均包括：所述待发送数据；
所述第一终端设备通过直通链路向第二终端设备发送所述n个MAC PDU，所述n个MAC PDU使用n个载波承载。
通过第一方面提供的数据传输方法，第一终端设备在接收到网络设备发送的用于指示第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据的第一信息后，可以通过直通链路，使用n个不同的载波，向第二终端设备发送携带有同一PDCP实体中的同一待发送数据的n个MAC PDU，达到通过直通链路向第二终端设备重复发送同一待发送数据的目的。
在一种可能的实施方式中，所述第一信息还包括第二元素；
在所述第二元素为第一取值时，所述第一信息，用于指示所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据；在所述第二元素为第二取值时，所述第一信息，用于指示所述第一终端设备停止使用所述n个逻辑信道传输同一PDCP实体的同一个待发送数据。
通过该可能的实施方式提供的数据传输方法，网络设备可以通过第一信息，灵活的激活或去激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据，从而有效的控制了第一终端设备在直通链路上的数据重复传输。
在一种可能的实施方式中，所述第一信息用于指示所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据，包括：
所述第一信息用于激活所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据。
通过该可能的实施方式提供的数据传输方法，网络设备可以通过第一信息，激活第一终端设备向第二终端设备重复传输同一PDCP实体的同一待发送数据，从而可以有效的控制第一终端设备的数据重复传输。
在一种可能的实施方式中，所述待发送数据所属的服务质量流与所述待发送数据的可靠性对应。
通过该可能的实施方式提供的数据传输方法，网络设备可以激活第一终端设备针对PDCP实体上的某一Qos flow的待发送数据进行重复传输。
在一种可能的实施方式中，所述待发送数据所属的服务质量流标识与所述待发送数据的可靠性对应。
通过该可能的实施方式提供的数据传输方法，网络设备可以激活第一终端设备针对PDCP实体上的某一Qos flow的待发送数据进行重复传输。
在一种可能的实施方式中，所述第一元素包括：位图；所述位图中的一个比特位对应一个标识。
通过该可能的实施方式提供的数据传输方法，通过位图来实现用于激活或去激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据的第一信息，能够降低第一信息的开销。
在一种可能的实施方式中，所述第一信息还包括：第三元素；
所述第三元素用于指示所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据的最大时长。
通过该可能的实施方式提供的数据传输方法，网络设备可以半动态的激活第一终端设 备使用n个逻辑信道传输同一PDCP实体的同一待发送数据，进一步地降低第一信息的开销。
在一种可能的实施方式中，所述第一信息携带在MAC控制元素CE或无线资源控制RRC信令中。
通过该可能的实施方式提供的数据传输方法，网络设备可以通过现有的MAC CE或RRC信令发送第一信息，无需新增信令来实现第一信息的发送，减少了信令开销。
在一种可能的实施方式中，所述第一终端设备接收网络设备发送的第一信息之前，所述方法还包括：
所述第一终端设备向所述网络设备发送第二信息，所述第二信息用于请求激活所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据。
通过该可能的实施方式提供的数据传输方法，网络设备可以基于第一终端设备的请求，来激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据，从而有效的控制了第一终端设备在直通链路上的数据重复传输。
在一种可能的实施方式中，所述第二信息包括下述一项或多项：所述待发送数据的数据优先级标识、所述待发送数据所属的业务的类型标识、所述待发送数据所属的服务质量流标识、所述待发送数据的目的地址标识、所述PDCP实体的标识、所述n个逻辑信道中的至少一个逻辑信道对应的信道拥塞程度。
通过该可能的实施方式提供的数据传输方法，网络设备可以基于第一终端设备的请求，来激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据，从而有效的控制了第一终端设备在直通链路上的数据重复传输。
第二方面提供一种数据传输方法，该方法包括：
第一终端设备将n个逻辑信道的n个数据分别封装到n个媒体接入控制MAC协议数据单元PDU，所述n个数据均包括：同一分组数据汇聚协议PDCP实体的同一待发送数据，所述n为大于1的正整数；
所述第一终端设备通过直通链路向第二终端设备发送所述n个MAC PDU，以及，所述n个数据对应的重传标识，所述n个MAC PDU使用n个载波承载。
通过第二方面提供的数据传输方法，第一终端设备可以通过直通链路，使用n个不同的载波，向第二终端设备发送携带有同一PDCP实体中的同一待发送数据的n个MAC PDU，以及，n个数据对应的重传标识，从而使得第二终端设备基于重传标识，可以使用同一PDCP实体处理该n个MAC PDU中含有同一待发送数据的数据，达到通过直通链路向第二终端设备重复发送同一待发送数据的目的。
在一种可能的实施方式中，所述n个数据对应的重传标识携带在所述n个数据中；
所述重传标识包括下述一项或多项：
所述待发送数据所属的PDCP实体的标识、所述待发送数据的数据优先级标识、所述待发送数据的服务质量流标识、所述待发送数据的目的地址标识、所述待发送数据对应的业务类型标识。
通过该可能的实施方式提供的数据传输方法，第一终端设备可以将重传标识携带在n个MAC PDU中，以通过该n个MAC PDU将待发送数据，以及，待发送数据的重传标识一同发送给第二终端设备，减少了信令开销。
在一种可能的实施方式中，所述重传标识携带在所述n个MAC PDU中至少一个MAC PDU的MAC控制元素CE中，或者所述待发送数据所在的MAC服务数据单元SDU对应的子头中。
通过该可能的实施方式提供的数据传输方法，第一终端设备可以将重传标识携带在n个MAC PDU的MAC CE或者是携带待发送数据的SDU的子头中，以通过该n个MAC PDU将待发送数据，以及，待发送数据的重传标识一同发送给第二终端设备，减少了信令开销。
在一种可能的实施方式中，所述重传标识包括：所述n个逻辑信道的标识，和/或，所述n个逻辑信道对应的无线链路控制协议RLC实体的标识。
通过该可能的实施方式提供的数据传输方法，第一终端设备可以将重传时所使用的n个逻辑信道的标识，和/或，n个逻辑信道对应的RLC实体的标识作为重传标识发送给第二终端设备，以使得第二终端设备基于该重传标识，可以使用同一PDCP实体处理该n个MAC PDU中含有同一待发送数据的数据，达到通过直通链路向第二终端设备重复发送同一待发送数据的目的。
在一种可能的实施方式中，在所述重传标识为第一取值时，所述重传标识用于指示所述第一终端设备使用预设的所述n个逻辑信道传输同一PDCP实体的同一待发送数据。
通过该可能的实施方式提供的数据传输方法，使得第一终端设备可以灵活的使用预设的n个逻辑信道传输数据，提高了数据传输效率。
第三方面提供一种数据传输方法，该方法包括：
网络设备向第一终端设备发送第一信息，所述第一信息用于指示所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据，所述第一信息包括第一元素；所述第一元素包括下述一个或多个标识：所述待发送数据的数据优先级标识、所述待发送数据所属的业务类型标识、所述待发送数据所属的服务质量流标识、所述待发送数据的目的地址标识、所述n个逻辑信道所在的逻辑信道组标识、所述n个逻辑信道对应的n个载波标识、所述PDCP实体的标识，所述n为大于1的正整数。
在一种可能的实施方式中，所述第一信息包括第二元素；
在所述第二元素为第一取值时，所述第一信息，用于指示所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据；在所述第二元素为第二取值时，所述第一信息，用于指示所述第一终端设备停止使用所述n个逻辑信道传输同一PDCP实体的同一个待发送数据。
在一种可能的实施方式中，所述第一信息用于指示所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据，包括：
所述第一信息用于激活所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据。
在一种可能的实施方式中，所述待发送数据所属的服务质量流与所述待发送数据的可靠性对应。
在一种可能的实施方式中，所述待发送数据所属的服务质量流标识与所述待发送数据的可靠性对应。
在一种可能的实施方式中，所述第一元素包括：位图；所述位图中的一个比特位对应 一个标识。
在一种可能的实施方式中，所述第一信息还包括：第三元素；
所述第三元素用于指示所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据的最大时长。
在一种可能的实施方式中，所述第一信息携带在媒体接入控制MAC控制元素CE或无线资源控制RRC信令中。
在一种可能的实施方式中，所述网络设备向第一终端设备发送第一信息之前，所述方法还包括：
所述网络设备接收所述第一终端设备发送的第二信息，所述第二信息用于请求激活所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据。
在一种可能的实施方式中，所述第二信息包括下述一项或多项：所述待发送数据的数据优先级标识、所述待发送数据所属的业务的类型标识、所述待发送数据所属的服务质量流标识、所述待发送数据的目的地址标识、所述PDCP实体的标识、所述n个逻辑信道中的至少一个逻辑信道对应的信道拥塞程度。
上述第三方面以及第三方面的各可能的实施方式所提供的数据传输方法，其有益效果可以参见上述第一方面和第一方面的各可能的实施方式所带来的有益效果，在此不再赘述。
第四方面提供一种数据传输方法，该方法包括：
第二终端设备通过直通链路接收第一终端设备发送的n个媒体接入控制MAC协议数据单元PDU，以及，所述n个数据对应的重传标识，所述n个MAC PDU使用n个载波承载，所述n个MAC PDU分别封装有n个逻辑信道的n个数据，所述n个数据均包括：同一分组数据汇聚协议PDCP实体的同一待发送数据，所述n为大于1的正整数；
所述第二终端设备根据所述n个数据对应的重传标识，使用同一PDCP实体处理所述n个数据。
在一种可能的实施方式中，所述n个数据对应的重传标识携带在所述n个数据中；
所述重传标识包括下述一项或多项：
所述待发送数据所属的PDCP实体的标识、所述待发送数据的数据优先级标识、所述待发送数据的服务质量流标识、所述待发送数据的目的地址标识、所述待发送数据对应的业务类型标识。
在一种可能的实施方式中，所述重传标识携带在所述n个MAC PDU中至少一个MAC PDU的MAC控制元素CE中，或者所述待发送数据所在的MAC服务数据单元SDU对应的子头中。
在一种可能的实施方式中，所述重传标识包括：所述n个逻辑信道的标识，和/或，所述n个逻辑信道对应的无线链路控制协议RLC实体的标识。
在一种可能的实施方式中，在所述重传标识为第一取值时，所述重传标识用于指示所述第一终端设备使用预设的所述n个逻辑信道传输同一PDCP实体的同一待发送数据。
上述第四方面以及第四方面的各可能的实施方式所提供的数据传输方法，其有益效果可以参见上述第二方面和第二方面的各可能的实施方式所带来的有益效果，在此不再赘述。
第五方面提供一种终端设备，所述终端设备为第一终端设备，所述第一终端设备包括：用于执行上述第一方面或第一方面的任一种可能实现方式所提供的方法的模块或单元。
第六方面提供一种终端设备，所述终端设备为第一终端设备，所述第一终端设备包括：用于执行以上第二方面或第二方面的任一种可能实现方式所提供的方法的模块或单元。
第七方面提供一种网络设备，所述网络设备包括：用于执行以上第三方面或第三方面的任一种可能实现方式所提供的方法的模块或单元。
第八方面提供一种终端设备，所述终端设备为第二终端设备，所述第二终端设备包括：用于执行以上第四方面或第四方面的任一种可能实现方式所提供的方法的模块或单元。
第九方面提供一种终端设备，所述终端设备为第一终端设备，所述第一终端设备包括：处理器、存储器、接收器、发送器；所述接收器和所述发送器均耦合至所述处理器，所述处理器控制所述接收器的接收动作，所述处理器控制所述发送器的发送动作；
其中，存储器用于存储计算机可执行程序代码，程序代码包括指令；当处理器执行指令时，指令使所述第一终端设备执行如第一方面和第一方面的各可能的实施方式所提供的数据传输方法。
第十方面提供一种终端设备，所述终端设备为第一终端设备，所述第一终端设备包括：处理器、存储器、发送器；所述发送器耦合至所述处理器，所述处理器控制所述发送器的发送动作；
其中，存储器用于存储计算机可执行程序代码，程序代码包括指令；当处理器执行指令时，指令使所述第一终端设备执行如第二方面和第二方面的各可能的实施方式所提供的数据传输方法。
第十一方面提供一种网络设备，所述网络设备包括：处理器、存储器、接收器、发送器；所述接收器和所述发送器均耦合至所述处理器，所述处理器控制所述接收器的接收动作，所述处理器控制所述发送器的发送动作；
其中，存储器用于存储计算机可执行程序代码，程序代码包括指令；当处理器执行指令时，指令使所述网络设备执行如第一方面和第一方面的各可能的实施方式所提供的数据传输方法。
第十二方面提供一种终端设备，所述终端设备为第二终端设备，所述第二终端设备包括：处理器、存储器、接收器；所述接收器耦合至所述处理器，所述处理器控制所述接收器的接收动作；
其中，存储器用于存储计算机可执行程序代码，程序代码包括指令；当处理器执行指令时，指令使所述第二终端设备执行如第二方面和第二方面的各可能的实施方式所提供的数据传输方法。
第十三方面提供一种终端设备，所述终端设备为第一终端设备，所述第一终端设备包括：用于执行以上第一方面的方法的至少一个处理元件(或芯片)。
第十四方面提供一种终端设备，所述终端设备为第一终端设备，所述第一终端设备包括：用于执行以上第二方面的方法的至少一个处理元件(或芯片)。
第十五方面提供一种网络设备，所述网络设备包括：用于执行以上第三方面的方法的至少一个处理元件(或芯片)。
第十六方面提供一种终端设备，所述终端设备为第二终端设备，所述第二终端设备包 括：用于执行以上第四方面的方法的至少一个处理元件(或芯片)。
第十七方面提供一种程序，该程序在被处理器执行时用于执行以上第一方面的方法。
第十八方面提供一种程序，该程序在被处理器执行时用于执行以上第二方面的方法。
第十九方面提供一种程序，该程序在被处理器执行时用于执行以上第三方面的方法。
第二十方面提供一种程序，该程序在被处理器执行时用于执行以上第四方面的方法。
第二十一方面提供一种程序产品，例如计算机可读存储介质，包括第十七方面的程序。
第二十二方面提供一种程序产品，例如计算机可读存储介质，包括第十八方面的程序。
第二十三方面提供一种程序产品，例如计算机可读存储介质，包括第十九方面的程序。
第二十四方面提供一种程序产品，例如计算机可读存储介质，包括第二十方面的程序。
第二十五方面提供一种计算机可读存储介质，计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述第一方面的方法。
第二十六方面提供一种计算机可读存储介质，计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述第二方面的方法。
第二十七方面提供一种计算机可读存储介质，计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述第三方面的方法。
第二十八方面提供一种计算机可读存储介质，计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述第四方面的方法。
第二十九方面提供一种装置，所述装置包括：用于执行上述第一方面或第一方面的任一种可能实现方式所提供的方法的模块或单元。应理解：该装置为一个芯片，或者，该装置由至少一个处理器和一个收发器构成。
第三十方面提供一种装置，所述装置包括：用于执行以上第二方面或第二方面的任一种可能实现方式所提供的方法的模块或单元。应理解：该装置为一个芯片，或者，该装置由至少一个处理器和一个收发器构成。
第三十一方面提供一种装置，所述装置包括：用于执行以上第三方面或第三方面的任一种可能实现方式所提供的方法的模块或单元。应理解：该装置为一个芯片，或者，该装置由至少一个处理器和一个收发器构成。
第三十二方面提供一种装置，所述装置包括：用于执行以上第四方面或第四方面的任一种可能实现方式所提供的方法的模块或单元。应理解：该装置为一个芯片，或者，该装置由至少一个处理器和一个收发器构成。
第三十三方面提供一种通信系统，所述通信系统包括如第五方面和第六方面所述的第一终端设备、如第七方面所述的网络设备，以及，如第八方面所述的第二终端设备。
本申请提供的数据传输方法、终端设备和网络设备，第一终端设备在接收到网络设备发送的用于指示第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据的第一信息后，可以通过直通链路，使用n个不同的载波，向第二终端设备发送携带有同一PDCP实体中的同一待发送数据的n个MAC PDU，达到通过直通链路向第二终端设备重复发送同一待发送数据的目的。
附图说明
图1为本申请涉及的通信系统的框架图；
图2为V2X通信的场景示意图一；
图3为V2X通信的场景示意图二；
图4为V2X通信的场景示意图三；
图5为本申请提供的一种数据传输方法的信令流程图；
图6为本申请提供的一种协议栈结构示意图；
图7为本申请提供的另一种数据传输方法的信令流程图；
图8为本申请提供的一种终端设备的结构示意图；
图9为本申请提供的另一种终端设备的结构示意图；
图10为本申请提供的一种网络设备的结构示意图；
图11为本申请提供的又一种终端设备的结构示意图；
图12为本申请提供的一种装置的结构示意图；
图13为本申请提供的另一种装置的结构示意图；
图14为本申请提供的又一种装置的结构示意图；
图15为本申请提供的又一种装置的结构示意图；
图16为本申请提供的又一种终端设备的结构示意图；
图17为本申请提供的又一种终端设备的结构示意图；
图18为本申请提供的另一种网络设备的结构示意图；
图19为本申请提供的又一种终端设备的结构示意图。
具体实施方式
图1为本申请涉及的通信系统的框架图。本申请提供的数据传输方法适用于如图1所示的通信系统，该通信系统可以是LTE通信系统，也可以是未来其他通信系统(例如5G通信系统)，在此不作限制。如图1所示，该通信系统包括：网络设备和终端设备。其中，
网络设备：可以是基站，或者接入点，或者可以是指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。基站可用于将收到的空中帧与IP分组进行相互转换，作为无线终端与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(IP)网络。基站还可协调对空中接口的属性管理。例如，基站可以是全球移动通讯(Global System of Mobile communication，GSM)或码分多址(Code Division Multiple Access，CDMA)中的基站(base transceiver station，BTS)，也可以是宽带码分多址(Wideband Code Division Multiple Access，WCDMA)中的基站(nodeB，NB)，还可以是长期演进(Long Term Evolution，LTE)中的演进型基站(evolutional node B，eNB或 eNodeB)，或者中继站或接入点，或者未来5G网络中的基站等，在此并不限定。
终端设备：可以是V2X中位于车辆上的终端设备(例如，车载终端设备、乘坐车辆的用户所携带的终端设备)，也可以是位于X(X可以为车辆、基础设施、网络、行人等)上的终端设备，或者可以是车辆终端本身或者X本身。这里所说的终端设备可以是无线终端也可以是有线终端，无线终端可以是指向用户提供语音和/或其他业务数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网(radio access network，RAN)与一个或多个核心网进行通信，无线终端可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(session initiation protocol，SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)等设备。无线终端也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、远程终端(remote terminal)、接入终端(access terminal)、用户终端(user terminal)、用户代理(user agent)、用户设备(user sevice or user equipment)，在此不作限定。
图2为V2X通信的场景示意图一。如图2所示，目前，V2X之间可以采用直通链路进行通信。即，车辆(即位于车辆上的终端设备，简称：车辆终端设备)与X(位于X上的终端设备)之间可以使用网络设备配置的资源，通过直通链路直接进行通信，不需要经过网络设备中转。图2示出的是以V2V之间采用直通链路进行通信的示意图。
V2X之间在采用直通链路进行通信时，V2X之间的通信又可以分为两种模式，一种是网络设备动态调度模式，一种是终端自主资源选择模式。图3为V2X通信的场景示意图二。图4为V2X通信的场景示意图三。以车辆为例，如图3所示，V2X之间在采用网络设备动态调度模式进行通信时，网络设备可以基于车辆终端设备发送的请求消息，动态或半动态的为车辆终端设备调度资源。这样，车辆终端设备可以使用网络设备调度的资源，通过直通链路与位于X上的终端设备进行通信。如图4所示，V2X之间在采用终端自主资源选择模式进行通信时，网络设备可以通过系统消息块(system information block，SIB)消息或无线资源控制(radio resource control，RRC)信令为车辆终端设备配置资源池，或者预配置在终端设备上的资源池。这样，车辆终端设备可以从资源池中获取资源，通过直通链路与位于X上的终端设备进行通信。具体实现时，车辆终端设备可以采用随机选择的方式或者基于侦听预留机制的方式，从资源池中获取资源。
目前，当V2X采用直通链路进行通信时，如何实现数据的重复传输是一个亟待解决的问题。
考虑到上述问题，本申请提供了一种数据传输方法，第一终端设备可以基于网络设备发送的用于指示第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议(packet data convergence protocol，PDCP)实体的同一待发送数据的第一信息，可以通过直通链路，使用n个不同的载波，向第二终端设备发送携带有同一PDCP实体中的同一待发送数据的n个媒体接入控制(media access control，MAC)协议数据单元(protocol date unit，PDU)，达到通过直通链路向第二终端设备重复发送同一待发送数据的目的。在本申请中，当上述 第一终端设备为V2X中的位于车辆上的终端设备时，上述第二终端设备可以为V2X中的位于X上的终端设备。当上述第一终端设备为V2X中的位于X上的终端设备时，上述第二终端设备可以为V2X中的位于车辆上的终端设备。
需要说明的是，本申请所提供的数据传输方法，包括但不限于以上V2X的应用场景，只要涉及通过直通链路进行通信的所有场景，例如，设备到设备(device to device，D2D)的应用场景、机器到机器(machine to machine，M2M)的应用场景，均可以采用本申请所提供的数据传输方法，对此不再赘述。
下面通过一些实施例对本申请的技术方案进行详细说明。下面这几个实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例不再赘述。
图5为本申请提供的一种数据传输方法的信令流程图。本实施例涉及的是第一终端设备根据用于指示第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据的第一信息，向第二终端设备重复传输同一PDCP实体的同一待发送数据的过程。如图5所示，该方法可以包括：
S101、网络设备向第一终端设备发送第一信息。
其中，第一信息用于指示第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据，第一信息包括第一元素；第一元素包括下述一个或多个标识：待发送数据的数据优先级标识、待发送数据所属的业务类型标识、待发送数据所属的服务质量流标识、待发送数据的目的地址标识、n个逻辑信道所在的逻辑信道组标识、n个逻辑信道对应的n个载波标识、PDCP实体的标识；n为大于1的正整数。本实施例对上述n的取值不进行限定，上述n例如可以为2。
S102、第一终端设备接收该第一信息。
S103、第一终端设备根据第一信息，将n个逻辑信道的n个数据分别封装到n个MAC PDU。
其中，该n个数据均包括：同一PDCP实体的同一待发送数据。
S104、第一终端设备通过直通链路向第二终端设备发送该n个MAC PDU。
其中，n个MAC PDU使用n个载波承载。
在本实施例中，上述网络设备可以通过第一信息，激活第一终端设备向第二终端设备重复传输同一PDCP实体的同一待发送数据，从而有效的控制了第一终端设备的数据重复传输。具体实现时，上述网络设备可以将该第一信息携带在MAC PDU的MAC控制元素(control element，CE)中发送给第一终端设备，或者，上述网络设备可以将该第一信息携带在RRC信令中发送给第一终端设备，或者，上述网络设备可以将该第一信息携带在系统消息块(system information block，SIB)消息中发送给第一终端设备。
图6为本申请提供的一种协议栈结构示意图。如图6所示，在本实施例中，第一终端设备在接收到该第一信息后，可以根据该第一信息，将同一个PDCP实体的同一待发送数据分别发送到n个无线链路控制协议(radio link control，RLC)实体，其中，每个RLC实体与一个逻辑信道对应。也就是说，第一终端设备可以将同一个PDCP实体的同一待发送数据，分别发送到与n个RLC实体一一对应的n个逻辑信道上。此时，n个逻辑信道的n个数据均包括同一PDCP实体的同一待发送数据。
然后，第一终端设备的MAC层可以将该n个逻辑信道的n个数据分别封装到n个MAC  PDU中。其中，该n个数据分别来自该n个逻辑信道，来自该n个逻辑信道中不同逻辑信道的数据被封装在不同的MAC PDU中。可以理解的，将一个数据封装在一个MAC PDU中指该MAC PDU中包含该数据。最后，第一终端设备的物理层(physical layer，PHY)层可以通过直通链路，使用n个载波将n个MAC PDU发送给第二终端设备，以达到向第二终端设备传输同一PDCP实体的同一待发送数据n次的目的，提高了数据传输的可靠性，降低了数据传输时延。通过这种方式，使得网络设备可以通过第一信息，激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据，从而有效的控制了第一终端设备的数据重复传输。
本申请提供的数据传输方法，第一终端设备在接收到网络设备发送的用于指示第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据的第一信息后，可以通过直通链路，使用n个不同的载波，向第二终端设备发送携带有同一PDCP实体中的同一待发送数据的n个MAC PDU，达到通过直通链路向第二终端设备重复发送同一待发送数据的目的。
上述第一终端设备的n个逻辑信道的n个数据所包括的同一待发送数据，可以根据第一元素所携带的标识确定。下面通过一些示例进行说明。
示例性的，第一终端设备的PDCP实体中的待发送数据来自于上层(即接入层之上)。目前，上层通常会为数据分配一个数据优先级，并将该数据与该数据的优先级一同发送给PDCP实体。也就是说，上述PDCP实体中的所有待发送数据均有对应的数据优先级。因此，上述第一元素可以包括待发送数据的数据优先级标识，以通过数据优先级标识，激活第一终端设备针对该数据优先级对应的待发送数据进行重复传输。这样，第一终端设备可以采用上述图5所示的实施例，对该数据优先级对应的待发送数据进行重复传输。通过这种方式，网络设备可以激活第一终端设备针对PDCP实体上的某一数据优先级的待发送数据进行重复传输。在该实现方式下，上述n个逻辑信道的n个数据均包括：PDCP实体上的某一数据优先级的待发送数据。
示例性的，上述第一终端设备可以存在多种不同类型的业务。上述所说的不同类型的业务可以为对应不同接收端和/或不同发送端的业务，例如上述所说的不同类型的业务可以为V2V业务、V2P业务、V2I业务，P2V业务，P2P业务，P2I业务等。或者，上述所说的不同类型的业务也可以通过应用层携带的或者上层(接入层之上)传递下来的应用层标识，(例如ITS-AID：ITS application identifier或者PSID：provider service identifier)来区分。因此，上述第一元素可以包括待发送数据所属的业务类型标识，以通过待发送数据所属的业务类型标识，激活第一终端设备针对该业务类型对应的待发送数据进行重复传输。这样，第一终端设备可以采用上述图5所示的实施例，对该业务类型对应的待发送数据进行重复传输。通过这种方式，网络设备可以激活第一终端设备针对PDCP实体上的某一业务类型对应的待发送数据进行重复传输。在该实现方式下，上述n个逻辑信道的n个数据均包括：PDCP实体上的某一业务类型对应的待发送数据。
示例性的，第一终端设备在使用直通链路与第二终端设备进行通信时，待发送数据所属的服务质量流(Qos flow)与Qos参数存在对应关系。其中，Qos参数可以包括时延、可靠性、优先级中的至少一个。因此，上述第一元素可以包括待发送数据所属的Qos flow标识，以通过待发送数据所属的Qos flow标识，激活第一终端设备针对该Qos flow对应的 待发送数据进行重复传输。这样，第一终端设备可以采用上述图5所示的实施例，对该Qos flow对应的待发送数据进行重复传输。通过这种方式，网络设备可以激活第一终端设备针对PDCP实体上的某一Qos flow的待发送数据进行重复传输。在该实现方式下，上述n个逻辑信道的n个数据均包括：PDCP实体上的某一Qos flow的待发送数据。
示例性的，第一终端设备与不同的第二终端设备进行通信时，待发送数据对应的目的地址是不同的。因此，上述第一元素可以包括待发送数据的目的地址标识，以通过待发送数据的目的地址标识，激活第一终端设备针对发送至该目的地址的待发送数据进行重复传输。这样，第一终端设备可以采用上述图5所示的实施例，对该发送至该目的地址的待发送数据进行重复传输。通过这种方式，网络设备可以激活第一终端设备针对待发送给某个第二终端设备的待发送数据进行重复传输。在该实现方式下，上述n个逻辑信道的n个数据均包括：PDCP实体上的待发送给某个第二终端设备的待发送数据。
可选的，当上述第一终端设备在以广播消息的方式，与第二终端设备进行通信时，上述目的地址可以与业务类型存在映射关系。因此，上述第一元素可以包括待发送数据的目的地址标识，以通过待发送数据的目的地址标识，激活第一终端设备针对发送至第二终端设备的某种业务类型的待发送数据进行重复传输。这样，第一终端设备可以采用上述图5所示的实施例，对该发送至第二终端设备的某种业务类型的待发送数据进行重复传输。通过这种方式，网络设备可以激活第一终端设备针对第二终端设备的某种业务类型的待发送数据进行重复传输。在该实现方式下，上述n个逻辑信道的n个数据均包括：PDCP实体上的待发送给某一类第二终端设备的待发送数据。
示例性的，上述第一元素可以包括PDCP实体的标识，以通过PDCP实体的标识，激活第一终端设备针对该PDCP实体上的待发送数据进行重复传输。这样，第一终端设备可以采用上述图5所示的实施例，对该PDCP实体上的所有待发送数据进行重复传输。通过这种方式，网络设备可以激活第一终端设备针对某一PDCP实体上的所有待发送数据进行重复传输。在该实现方式下，上述n个逻辑信道的n个数据均包括：某一PDCP实体上的所有待发送数据。
示例性的，目前，网络设备可以通过RRC信令为连接态的终端设备配置逻辑信道组，因此，上述第一元素可以包括n个逻辑信道所在的逻辑信道组标识，以通过n个逻辑信道所在的逻辑信道组标识，激活第一终端设备使用该逻辑信道组的n个逻辑信道，对某一PDCP实体上的待发送数据进行重复传输。这样，第一终端设备可以采用上述图5所示的实施例，使用该逻辑信道组的n个逻辑信道对某一PDCP实体上的待发送数据进行重复传输。通过这种方式，网络设备可以激活第一终端设备使用n个逻辑信道对某一PDCP实体上的待发送数据进行重复传输。在该实现方式下，上述n个逻辑信道的n个数据均包括：某一PDCP实体上的所有待发送数据。
需要说明的是，若该逻辑信道组包括的逻辑信道的数量大于n的倍数，以n为2为例，假定该逻辑信道组包括的逻辑信道的数量为5个，则上述第一终端设备可以使用该逻辑信道组的2个逻辑信道对一个PDCP实体上的待发送数据进行重复传输，使用该逻辑信道组剩余3个逻辑信道中的2个逻辑信道对另外一个PDCP实体上的待发送数据进行重复传输。
示例性的，上述第一元素可以包括n个载波标识，以通过n个载波标识，激活第一终端设备使用n个逻辑信道对某一PDCP实体上的待发送数据进行重复传输。这样，第一终 端设备可以采用上述图5所示的实施例，通过该n个载波标识对应的n个载波，使用n个逻辑信道对某一PDCP实体上的待发送数据进行重复传输。通过这种方式，网络设备可以激活第一终端设备使用n个逻辑信道对某一PDCP实体上的待发送数据进行重复传输。在该实现方式下，上述n个逻辑信道的n个数据均包括：某一PDCP实体上的所有待发送数据。在该场景下，本申请不限定上述第一终端设备对PDCP实体上的待发送数据进行重复传输时所使用的n个逻辑信道。
示例性的，上述第一元素还可以包括：待发送数据的数据优先级标识和n个载波标识以通过数据优先级标识和n个载波标识，激活第一终端设备通过n个载波标识对应的n个载波，针对该数据优先级对应的待发送数据进行重复传输。这样，第一终端设备可以采用上述图5所示的实施例，通过n个载波标识对应的n个载波，针对该数据优先级对应的待发送数据进行重复传输。通过这种方式，网络设备可以激活第一终端设备使用n个逻辑信道对某一PDCP实体上的待发送数据进行重复传输。在该实现方式下，上述n个逻辑信道的n个数据均包括：PDCP实体上的某一数据优先级的待发送数据。
在一种实现方式中，上述网络设备和第一终端设备预设有数据优先级与n个载波的对应关系，因此，上述网络设备可以使用第一元素携带有待发送数据的数据优先级标识的第一信息，来激活第一终端设备通过该数据优先级对应的n个载波，针对该数据优先级对应的待发送数据进行重复传输。其中，第一终端设备预设的数据优先级与n个载波的对应关系可以为网络设备通过RRC信令动态或半动态配置的，也可以为网络设备使用SIB消息广播给第一终端设备，也可以是预配置在第一终端设备上的，还可以为网络设备采用其他方式发送给第一终端设备等，对此不再限定。
示例性的，上述第一元素还可以包括：待发送数据的数据优先级标识、n个逻辑信道所在的逻辑信道组标识、n个载波标识，以通过这几个标识，激活第一终端设备通过n个载波标识对应的n个载波，使用该逻辑信道组的n个逻辑信道针对该数据优先级对应的待发送数据进行重复传输。这样，第一终端设备可以采用上述图5所示的实施例，通过n个载波标识对应的n个载波，使用该逻辑信道组的n个逻辑信道，针对该数据优先级对应的待发送数据进行重复传输。通过这种方式，网络设备可以激活第一终端设备使用n个逻辑信道对某一PDCP实体上的待发送数据进行重复传输。在该实现方式下，上述n个逻辑信道的n个数据均包括：PDCP实体上的某一数据优先级的待发送数据。
需要说明的是，上述所列举的示例仅是一种示意，具体实现时，上述第一元素可以通过携带上述所列举的任意标识的组合，来激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据，其实现方式与技术效果类似，对此不再赘述。另外，当上述第一元素携带多个标识时，该多个标识可以为不同类型的标识。例如，上述第一元素可以同时携带待发送数据的数据优先级标识和待发送数据的目的地址标识。该多个标识也可以为相同类型的标识，例如，上述第一元素可以携带有数据优先级标识1和数据优先级标识2，其实现方式与技术效果类似，对此不再赘述。
在一种可能的方式中，上述第一信息在某些情况下，可以用于指示第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据，在另外一些情况下，可以用于指示第一终端设备停止使用n个逻辑信道传输同一PDCP实体的同一待发送数据。通过这种方式，可以使第一信息通过这种方式，使网络设备可以通过第一信息，灵活的激活或去激活 第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据，从而有效的控制了第一终端设备的数据重复传输。
具体实现时，上述第一信息还可以包括第二元素，以通过第二元素来实现上述第一信息。即，在第二元素为第一取值时，第一信息，用于指示第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。在第一元素为第二取值时，第一信息，用于指示第一终端设备停止使用n个逻辑信道传输同一PDCP实体的同一个待发送数据。例如，在上述第一取值为0时，第二取值可以为1。在上述第一取值为1时，第二取值可以为0。
示例性的，以第一取值为0，第二取值为1为例，假定第一元素包括：待发送数据的数据优先级标识。则当第二元素取值为0时，上述第一信息用于激活第一终端设备针对该数据优先级对应的待发送数据进行重复传输。当第二元素取值为1时，上述第一信息用于去激活第一终端设备针对该数据优先级对应的待发送数据进行重复传输。即停止使用n个逻辑信道对该数据优先级对应的待发送数据进行重复传输，仍然采用1个逻辑信道对该数据优先级对应的待发送数据进行传输。
或者，在第一终端设备接收到第一信息的累积次数为第一类型的数值时，第一信息，用于指示第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。在累积次数为第二类型的数值时，第一信息，用于指示第一终端设备停止使用n个逻辑信道传输同一PDCP实体的同一个待发送数据。例如，上述第一类型的数值可以为奇数，第二类型的数值可以为偶数，或者，上述第一类型的数值可以为偶数，第二类型的数值可以为奇数等。
示例性的，以上述第一类型的数值为奇数，第二类型的数值为偶数为例，假定第一终端设备接收到第一信息的累积次数为1，则第一信息，用于指示第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。假定第一终端设备接收到第一信息的累积次数为2，则上述第一信息用于去激活第一终端设备针对该数据优先级对应的待发送数据进行重复传输。即停止使用n个逻辑信道对该数据优先级对应的待发送数据进行重复传输，仍然采用1个逻辑信道对该数据优先级对应的待发送数据进行传输。
或者，第一元素可以包括位图，其中，位图中的一个比特位对应第一元素中的一个标识。即，通过固定的比特位来表示第一元素所携带的标识。以第一元素包括待发送数据的数据优先级标识为例，假定数据优先级一共有8个，分别为数据优先级0至数据优先级7。如表1所示，在位图中，可以按照数据优先级从小到大的顺序，依次将每个比特位与一个数据优先级对应。当然，也可以按照数据优先级从大到小的顺序，依次将每个比特位与一个数据优先级对应，对此不再赘述。
表1
Figure PCTCN2018106951-appb-000001
当某一比特位为第一值时，可以指示第一终端设备使用n个逻辑信道传输该比特位对应的数据优先级的待发送数据。当某一比特位为第二值时，可以指示第一终端设备停止使用n个逻辑信道传输该比特位对应的数据优先级的待发送数据。例如，在上述第一取值为0时，第二取值可以为1。在上述第一取值为1时，第二取值可以为0。
示例性，以上述表1所示的位图格式为例，假定上述第一信息的第一元素如下述表2 所示。
表2
0 1 1 0 1 0 1 1
则上述第一信息用于激活第一终端设备对数据优先级1、数据优先级2、数据优先级4、数据优先级6、数据优先级7的待发送数据进行重复传输。即，第一终端设备需要使用n个逻辑信道传输数据优先级1的待发送数据，使用n个逻辑信道传输数据优先级2的待发送数据，使用n个逻辑信道传输数据优先级4的待发送数据，使用n个逻辑信道传输数据优先级6的待发送数据，使用n个逻辑信道传输数据优先级7的待发送数据。
在一种可能的方式中，当上述第一信息用于指示第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据时，上述第一信息还可以包括：第三元素。其中，第三元素用于指示第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据的最大时长。也就是说，第一终端设备在接收到携带有第三元素的第一信息后，可以在该最大时长内，使用n个逻辑信道传输同一PDCP实体的同一待发送数据，在超出该最大时长后，自动停止使用n个逻辑信道传输同一PDCP实体的同一待发送数据。通过这种方式，网络设备可以半动态的激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。具体实现时，上述第一终端设备可以通过启动定时器的方式，来识别是否超出最大时长，对此不再赘述。
在该实现方式下，在上述第一信息用于指示第一终端设备停止使用n个逻辑信道传输同一PDCP实体的同一待发送数据时，上述第一信息也可以包括第三元素。此时，该第三元素用于指示第一终端设备停止使用n个逻辑信道传输同一PDCP实体的同一待发送数据的最大时长。也就是说，第一终端设备在接收到携带有第三元素的第一信息后，可以在该最大时长内，停止使用n个逻辑信道传输同一PDCP实体的同一待发送数据，在超出该最大时长后，继续使用n个逻辑信道传输同一PDCP实体的同一待发送数据。通过这种方式，网络设备可以半动态的去激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。
在另外一种可能的实施方式中，上述第一信息还可以只包括第三元素，以通过第三元素指示第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据的最大时长，并激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。通过这种方式，网络设备可以在激活第一终端设备使用n个逻辑信道对某一PDCP实体上的待发送数据进行重复传输的同时，还可以降低信令的开销。在该实现方式下，上述n个逻辑信道的n个数据均包括：PDCP实体上的某一数据优先级的待发送数据。
由于第一终端设备在通过直通链路与第二终端设备进行通信时，第一终端设备负责建立和维护第一终端设备的逻辑信道，所以网络设备无法通过为第一终端设备配置PDCP实体与逻辑信道的对应关系，来指示第一终端设备使用哪些逻辑信道进行数据重复传输。因此，网络设备可以根据网络资源的使用情况，主动向第一终端设备发送上述第一信息，灵活的激活或去激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据，从而有效的控制了第一终端设备的数据重复传输。例如，以第一元素携带有数据优先级标识为例，当网络资源出现拥塞时，网络设备可以通过向第一终端设备发送用于指示第一终端设备停止使用n个逻辑信道传输某一个或多个数据优先级的待发送数据的第一信息。当 网络资源出现空闲时，网络设备可以通过向第一终端设备发送用于指示第一终端设备使用n个逻辑信道传输某一个或多个数据优先级的待发送数据的第一信息。
也就是说，上述第一信息可以为网络设备根据网络资源的使用情况，主动发送给第一终端设备的。可选的，上述第一信息也可以为网络设备基于第一终端设备的请求发送给第一终端设备的。则当上述第一信息为网络设备基于第一终端设备的请求发送给第一终端设备的，则在上述S101之前，该方法还可以包括：
第一终端设备向网络设备发送第二信息，第二信息用于请求激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据，或，用于请求去激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。
具体的，当第一终端设备需要向第二终端设备发送待发送数据时，上述第一终端设备可以向网络设备发送用于请求激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据的第二信息，以请求网络设备激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。相应地，网络设备在接收到该第二信息后，可以基于该第二信息，以及，网络资源使用情况，确定是否激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。在确定激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据，网络设备可以向第一终端设备发送用于指示第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据的第一信息，对此不再赘述。
当第一终端设备需要停止重复发送某一待发送数据时，上述第一终端设备可以向网络设备发送用于请求去激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据的第二信息，以请求网络设备去激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。相应地，网络设备在接收到该第二信息后，可以基于该第二信息，确定是否去激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。在确定去激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据，网络设备可以向第一终端设备发送用于指示第一终端设备停止使用n个逻辑信道传输同一PDCP实体的同一待发送数据的第一信息，对此不再赘述。
具体实现时，上述第二信息可以包括下述一项或多项：待发送数据的数据优先级标识、待发送数据所属的业务的类型标识、待发送数据所属的服务质量流标识、待发送数据的目的地址标识、PDCP实体的标识(例如待发送数据所在的PDCP实体)、n个逻辑信道中的至少一个逻辑信道对应的信道拥塞程度。
上述网络设备在确定激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据时，上述网络设备可以发送前述所述的用于指示第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据的第一信息。上述网络设备在确定去激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据时，上述网络设备可以发送前述所述的用于指示第一终端设备停止使用n个逻辑信道传输同一PDCP实体的同一待发送数据的第一信息。
或者，上述网络设备也可以发送携带有一个标志位的第一信息，激活或去激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。当该标志位为第一取值时，上述第一信息用于激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。当该标志位为第二取值时，上述第一信息用于去激活第一终端设备使用n个逻 辑信道传输同一PDCP实体的同一待发送数据。即停止使用n个逻辑信道对该待发送数据进行重复传输，仍然采用1个逻辑信道对该待发送数据进行传输。例如，当第一取值为1时，第二取值为0，当第一取值为0时，第二取值为1。
或者，上述网络设备也可以通过发送MAC CE形式的第一信息，以通过不同的MAC CE激活或去激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。当网络设备向终端设备发送的MAC PDU中包含第一MAC CE时，上述第一信息用于激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。当网络设备向终端发送的MAC PDU中包含第二MAC CE时，上述第一信息用于去激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。
或者，上述网络设备也可以通过同一MAC CE的不同取值，激活或去激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。当该MAC CE为第一取值时，用于指示第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据。当MAC CE为第二取值时，用于指示第一终端设备停止使用n个逻辑信道传输同一PDCP实体的同一个待发送数据。例如，第一取值为0011时，第二取值为0100。
或者，上述第一信息也可以采用携带标志位和第三元素，或者，使用不同的MAC CE和第三元素、通过同一MAC CE的不同取值和第三元素组合的方式，来激活或去激活一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据，以及，激活或去激活一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据的最大时长，对此不再赘述。
需要说明的是，虽然上述示例以网络设备基于第一终端设备的请求，向第一终端设备发送第一信息的场景为例，介绍和说明了第一信息。但是本领域技术人员可以理解的是，上述第一信息也适用于网络设备根据网络资源的使用情况，主动向第一终端设备发送第一信息的场景，对此不再赘述。
通过这种方式，使得网络设备激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据的方式灵活多样，在有效的控制了第一终端设备的数据重复传输的基础上，扩大了使用场景。
本申请提供的数据传输方法，网络设备可以通过第一信息，灵活的激活或去激活第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据，从而有效的控制了第一终端设备在直通链路上的数据重复传输。
如前述实施例所说，第一终端设备在通过直通链路与第二终端设备进行通信时，第一终端设备负责建立和维护第一终端设备的逻辑信道。相应地，第二终端设备负责建立和维护第二终端设备的逻辑信道。因此，第一终端设备在使用n个逻辑信道向第二终端设备重复传输同一PDCP实体的同一待发送数据时，需要将该n个逻辑信道对应同一PDCP实体的对应关系通知给第二终端设备，以使得第二终端设备在接收到该n个逻辑信道的n个数据(包括同一待发送数据)后，可以将该n个数据交由同一PDCP实体处理，以实现第一终端设备与第二终端设备之间的数据重复传输。
图7为本申请提供的另一种数据传输方法的信令流程图。本实施例涉及的是上述第一终端设备将该n个逻辑信道对应同一PDCP实体的对应关系通知给第二终端设备的过程。如图7所示，该方法可以包括：
S201、第一终端设备将n个逻辑信道的n个数据分别封装到n个MAC PDU。
S202、第一终端设备通过直通链路向第二终端设备发送该n个MAC PDU，以及，该n个数据对应的重传标识。
其中，该n个MAC PDU使用n个载波承载。
S203、第二终端设备接收该n个MAC PDU，以及，该n个数据对应的重传标识。
S204、第二终端设备根据n个数据对应的重传标识，使用同一PDCP实体处理该n个数据。
在本实施例中，上述第一终端设备可以将n个数据对应的重传标识携带在n个MAC PDU中，以随同n个数据一同发送给第二终端设备，也可以单独发送给第二终端设备等。
可选的，上述第一终端设备可以在将同一个PDCP实体的同一待发送数据分别发送到n个RLC实体时，也将重传标识随同待发送数据一起发送给n个RLC实体。这样，与n个RLC实体一一对应的n个逻辑信道的n个数据均可以包括：同一个PDCP实体的同一待发送数据，以及，该n个数据的重传标识。然后，第一终端设备可以将该n个逻辑信道的n个数据分别封装到n个MAC PDU，以通过该n个MAC PDU将待发送数据，以及，待发送数据的重传标识一同发送给第二终端设备。这样，第二终端设备在接收到该n个MAC PDU后，可以根据该n个数据中携带的重传标识，将包括同一待发送数据的n个数据交由同一PDCP实体处理。
具体实现时，上述第一终端设备的RLC实体可以将上述重传标识封装在RLC层数据包的头部。也就是说，逻辑信道所包括的数据中包含有重传标识。这样，第二终端设备的RLC实体解析该n个数据的头部，即可确定将该数据递交到哪个PDCP实体。其中，上述重传标识可以包括下述一项或多项：待发送数据所属的PDCP实体的标识、待发送数据的数据优先级标识、待发送数据的服务质量流标识、待发送数据的目的地址标识、待发送数据对应的业务类型标识等。
可选的，上述第一终端设备可以将重传标识携带在上述n个MAC PDU的至少一个MAC PDU的MAC CE中发送给第二终端设备，或者上述第一终端设备可以将重传标识，或者，上述第一终端设备可以通过将上述重传标识携带在单独的消息(例如直通链路SIB消息)中发送给第二终端设备。或者，上述第一终端设备可以将重传标识的一部分携带在上述n个MAC PDU的至少一个MAC PDU的MAC CE中发送给第二终端设备，将重传标识的另一部分信息携带在该至少一个MAC PDU中、且包含在与所述待发送数据所在的MAC SDU对应的子头中，发送给第二终端设备。在该实现方式下，上述重传标识可以包括：n个逻辑信道的标识，和/或，n个逻辑信道一一对应的RLC实体的标识。例如，上述重传标识可以包括：逻辑信道1的标识和逻辑信道2的标识，则上述第二终端设备在接收到分别封装有该2个逻辑信道的数据的2个MAC PDU后，第二终端设备可以将逻辑信道1的数据和逻辑信道2的数据交由同一PDCP实体处理。
可选的，上述第一终端设备和第二终端设备预设有第一终端设备传输同一PDCP实体的同一待发送数据时所使用的n个逻辑信道。因此，上述第二终端设备在接收到分别封装有n个逻辑信道的数据的n个MAC PDU后，第二终端设备可以根据预设的信息，将该n个逻辑信道的数据交由同一PDCP实体处理。具体实现时，上述网络设备可以通过RRC信令、SIB消息向第一终端设备和第二终端设备配置第一终端设备传输同一PDCP实体的 同一待发送数据时所使用的n个逻辑信道，或者，传输同一PDCP实体的同一待发送数据时所使用的n个逻辑信道可以预配置在第一终端设备和第二终端设备上。其中预配置可以是网络设备预配置在终端设备上的或者是终端设备在出厂时预配置在终端设备上的。
在该实现方式下，上述第一终端设备可以在与第二终端设备进行通信时，持续使用预设的n个逻辑信道进行数据重传。上述第一终端设备也可以在使用预设的n个逻辑信道进行数据重传时，向第二终端设备发送重传标识，以通过重传标识指示第一终端设备使用预设的n个逻辑信道传输同一PDCP实体的同一待发送数据，或，指示第一终端设备停止使用预设的n个逻辑信道传输同一PDCP实体的同一待发送数据。这样，第二终端设备可以基重传标识，确定是否将该n个逻辑信道的数据交由同一PDCP实体进行处理。通过这种方式，使得第一终端设备可以灵活的使用预设的n个逻辑信道传输数据，提高了数据传输效率。
其中，本实施例不限定上述重传标识的具体实现方式，例如，上述重传标识可以仅携带一个比特的标志位，以通过该标志位来指示第一终端设备使用预设的n个逻辑信道传输同一PDCP实体的同一待发送数据，或，指示第一终端设备停止使用预设的n个逻辑信道传输同一PDCP实体的同一待发送数据。例如，当该标志位为0时，上述重传标识可以指示第一终端设备使用预设的n个逻辑信道传输同一PDCP实体的同一待发送数据。当该标志位为1时，上述重传标识可以指示第一终端设备停止使用预设的n个逻辑信道传输同一PDCP实体的同一待发送数据。或者，当该标志位为1时，上述重传标识可以指示第一终端设备使用预设的n个逻辑信道传输同一PDCP实体的同一待发送数据。当该标志位为0时，上述重传标识可以指示第一终端设备停止使用预设的n个逻辑信道传输同一PDCP实体的同一待发送数据。
可选的，上述第一终端设备可以将重传标识携带在上述n个MAC PDU的至少一个MAC PDU的MAC CE中发送给第二终端设备，或者上述第一终端设备可以将重传标识携带在上述n个MAC PDU的至少一个MAC PDU中，且且包含在与待发送数据所在的MAC SDU对应的子头中，发送给第二终端设备，或者，上述第一终端设备可以通过将上述重传标识携带在单独的消息(例如直通链路SIB消息)中发送给第二终端设备等。
本申请提供的数据传输方法，第一终端设备可以通过直通链路，使用n个不同的载波，向第二终端设备发送携带有同一PDCP实体中的同一待发送数据的n个MAC PDU，以及，n个数据对应的重传标识，从而使得第二终端设备基于重传标识，可以使用同一PDCP实体处理该n个MAC PDU中含有同一待发送数据的数据，达到通过直通链路向第二终端设备重复发送同一待发送数据的目的。
图8为本申请提供的一种终端设备的结构示意图。如图8所示，该终端设备为第一终端设备，该第一终端设备可以包括：接收模块11、处理模块12和发送模块13。其中，
接收模块11，用于接收网络设备发送的第一信息，所述第一信息用于指示所述第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据，所述第一信息包括第一元素；所述第一元素包括下述一个或多个标识：所述待发送数据的数据优先级标识、所述待发送数据所属的业务类型标识、所述待发送数据所属的服务质量流标识、所述待发送数据的目的地址标识、所述n个逻辑信道所在的逻辑信道组标识、所述n个逻辑信道对应的n个载波标识、所述PDCP实体的标识；所述n为大于1的正整数；例如，所述第一信息 携带在MAC CE或无线资源控制RRC信令中。
处理模块12，用于根据所述第一信息，将所述n个逻辑信道的n个数据分别封装到n个MAC PDU，所述n个数据均包括：所述待发送数据；
发送模块13，用于通过直通链路向第二终端设备发送所述n个MAC PDU，所述n个MAC PDU使用n个载波承载。
可选的，在一些实施例中，上述第一信息还包括第二元素。在所述第二元素为第一取值时，所述第一信息，用于指示所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据；在所述第二元素为第二取值时，所述第一信息，用于指示所述第一终端设备停止使用所述n个逻辑信道传输同一PDCP实体的同一个待发送数据。
可选的，在一些实施例中，所述第一信息用于指示所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据，包括：所述第一信息用于激活所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据。示例性的，所述待发送数据所属的服务质量流与所述待发送数据的可靠性对应。或者，所述待发送数据所属的服务质量流标识与所述待发送数据的可靠性对应。
可选的，在一些实施例中，所述第一元素包括：位图；所述位图中的一个比特位对应一个标识。
可选的，在一些实施例中，所述第一信息还包括：第三元素。所述第三元素用于指示所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据的最大时长。
可选的，在一些实施例中，所述发送模块13，还用于在所述接收模块11接收网络设备发送的第一信息之前，向所述网络设备发送第二信息，所述第二信息用于请求激活所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据。其中，所述第二信息例如包括下述一项或多项：所述待发送数据的数据优先级标识、所述待发送数据所属的业务的类型标识、所述待发送数据所属的服务质量流标识、所述待发送数据的目的地址标识、所述PDCP实体的标识、所述n个逻辑信道中的至少一个逻辑信道对应的信道拥塞程度。
本申请提供的第一终端设备，可以执行上述方法实施例中图5所示的第一终端设备的动作，其实现原理和技术效果类似，在此不再赘述。
图9为本申请提供的另一种终端设备的结构示意图。如图9所示，该终端设备为第一终端设备，该第一终端设备可以包括：处理模块21和发送模块22。其中，
处理模块21，用于将n个逻辑信道的n个数据分别封装到n个MAC PDU，所述n个数据均包括：同一PDCP实体的同一待发送数据，所述n为大于1的正整数；
发送模块22，用于通过直通链路向第二终端设备发送所述n个MAC PDU，以及，所述n个数据对应的重传标识，所述n个MAC PDU使用n个载波承载。
可选的，在一些实施例中，若所述n个数据对应的重传标识携带在所述n个数据中，则所述重传标识可以包括下述一项或多项：所述待发送数据所属的PDCP实体的标识、所述待发送数据的数据优先级标识、所述待发送数据的服务质量流标识、所述待发送数据的目的地址标识、所述待发送数据对应的业务类型标识。
可选的，在一些实施例中，上述重传标识可以携带在所述n个MAC PDU中至少一个 MAC PDU的MAC CE中，或者所述待发送数据所在的MAC SDU对应的子头中。在该实现方式下，上述重传标识可以包括：所述n个逻辑信道的标识，和/或，所述n个逻辑信道对应的RLC实体的标识等。或者，在所述重传标识为第一取值时，所述重传标识用于指示所述第一终端设备使用预设的所述n个逻辑信道传输同一PDCP实体的同一待发送数据。
本申请提供的第一终端设备，可以执行上述方法实施例中图6所示的第一终端设备的动作，其实现原理和技术效果类似，在此不再赘述。
图10为本申请提供的一种网络设备的结构示意图。如图10所示，该网络设备可以包括：发送模块31。其中，
发送模块31，用于向第一终端设备发送第一信息，所述第一信息用于指示所述第一终端设备使用n个逻辑信道传输同一PDCP实体的同一待发送数据，所述第一信息包括第一元素；所述第一元素包括下述一个或多个标识：所述待发送数据的数据优先级标识、所述待发送数据所属的业务类型标识、所述待发送数据所属的服务质量流标识、所述待发送数据的目的地址标识、所述n个逻辑信道所在的逻辑信道组标识、所述n个逻辑信道对应的n个载波标识、所述PDCP实体的标识，所述n为大于1的正整数。例如，所述第一信息携带在MAC CE或RRC信令中。
可选的，在一些实施例中，所述第一信息包括第二元素。在所述第二元素为第一取值时，所述第一信息，用于指示所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据；在所述第二元素为第二取值时，所述第一信息，用于指示所述第一终端设备停止使用所述n个逻辑信道传输同一PDCP实体的同一个待发送数据。
可选的，在一些实施例中，所述第一信息用于指示所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据，包括：所述第一信息用于激活所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据。示例性的，所述待发送数据所属的服务质量流与所述待发送数据的可靠性对应。或者，所述待发送数据所属的服务质量流标识与所述待发送数据的可靠性对应。
可选的，在一些实施例中，所述第一元素包括：位图；所述位图中的一个比特位对应一个标识。
可选的，在一些实施例中，所述第一信息还包括：第三元素。其中，所述第三元素用于指示所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据的最大时长。
继续参照图10，可选的，在一些实施例中，所述网络设备还包括：接收模块32。其中，接收模块32，用于在所述发送模块31向第一终端设备发送第一信息之前，接收所述第一终端设备发送的第二信息，所述第二信息用于请求激活所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据。其中，所述第二信息包括下述一项或多项：所述待发送数据的数据优先级标识、所述待发送数据所属的业务的类型标识、所述待发送数据所属的服务质量流标识、所述待发送数据的目的地址标识、所述PDCP实体的标识、所述n个逻辑信道中的至少一个逻辑信道对应的信道拥塞程度。
本申请提供的网络设备，可以执行上述方法实施例中网络设备的动作，其实现原理和技术效果类似，在此不再赘述。
图11为本申请提供的又一种终端设备的结构示意图。如图11所示，该终端设备为第 二终端设备，该第二终端设备可以包括：接收模块41和处理模块42。其中，
接收模块41，用于通过直通链路接收第一终端设备发送的n个MAC PDU，以及，所述n个数据对应的重传标识，所述n个MAC PDU使用n个载波承载，所述n个MAC PDU分别封装有n个逻辑信道的n个数据，所述n个数据均包括：同一PDCP实体的同一待发送数据，所述n为大于1的正整数；
处理模块42，用于根据所述n个数据对应的重传标识，使用同一PDCP实体处理所述n个数据。
可选的，在一些实施例中，若所述n个数据对应的重传标识携带在所述n个数据中，则所述重传标识可以包括下述一项或多项：所述待发送数据所属的PDCP实体的标识、所述待发送数据的数据优先级标识、所述待发送数据的服务质量流标识、所述待发送数据的目的地址标识、所述待发送数据对应的业务类型标识。
可选的，在一些实施例中，上述重传标识可以携带在所述n个MAC PDU中至少一个MAC PDU的MAC CE中，或者所述待发送数据所在的MAC SDU对应的子头中。在该实现方式下，上述重传标识可以包括：所述n个逻辑信道的标识，和/或，所述n个逻辑信道对应的RLC实体的标识等。或者，在所述重传标识为第一取值时，所述重传标识用于指示所述第一终端设备使用预设的所述n个逻辑信道传输同一PDCP实体的同一待发送数据。
本申请提供的第二终端设备，可以执行上述方法实施例中第二终端设备的动作，其实现原理和技术效果类似，在此不再赘述。
需要说明的是，应理解以上发送模块实际实现时可以为发送器，接收模块实际实现时可以为接收器，而处理模块可以以软件通过处理元件调用的形式实现；也可以以硬件的形式实现。例如，处理模块可以为单独设立的处理元件，也可以集成在上述装置的某一个芯片中实现，此外，也可以以程序代码的形式存储于上述装置的存储器中，由上述设备的某一个处理元件调用并执行以上处理模块的功能。此外这些模块全部或部分可以集成在一起，也可以独立实现。这里所述的处理元件可以是一种集成电路，具有信号的处理能力。在实现过程中，上述方法的各步骤或以上各个模块可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。
例如，以上这些模块可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(application specific integrated circuit，ASIC)，或，一个或多个微处理器(digital signal processor，DSP)，或，一个或者多个现场可编程门阵列(field programmable gate array，FPGA)等。再如，当以上某个模块通过处理元件调度程序代码的形式实现时，该处理元件可以是通用处理器，例如中央处理器(central processing unit，简称CPU)或其它可以调用程序代码的处理器。再如，这些模块可以集成在一起，以片上系统(system-on-a-chip，简称SOC)的形式实现。
图12为本申请提供的一种装置的结构示意图。如图12所示，该装置可以为一个芯片，该芯片包括：用于执行上述图5所示的第一终端设备的动作的模块或单元，例如，接收模块51(也可以称为接收单元)、处理模块52(也可以称为处理单元)、发送模块53(也可以称为发送单元)等，其实现原理和技术效果类似，在此不再赘述。
图13为本申请提供的另一种装置的结构示意图。如图13所示，该装置可以为一个芯片，该芯片包括：用于执行上述图7所示的第一终端设备的动作的模块或单元，例如，处 理模块61(也可以称为处理单元)、发送模块62(也可以称为发送单元)等，其实现原理和技术效果类似，在此不再赘述。
图14为本申请提供的又一种装置的结构示意图。如图14所示，该装置可以为一个芯片，该芯片包括：用于执行上述图5所示的网络设备的动作的模块或单元，例如，接收模块71(也可以称为接收单元)、发送模块72(也可以称为发送单元)等，其实现原理和技术效果类似，在此不再赘述。
图15为本申请提供的又一种装置的结构示意图。如图15所示，该装置可以为一个芯片，该芯片包括：用于执行上述图7所示的第二终端设备的动作的模块或单元，例如，接收模块81(也可以称为接收单元)、处理模块82(也可以称为处理单元)等，其实现原理和技术效果类似，在此不再赘述。
图16为本申请提供的又一种终端设备的结构示意图。如图16所示，该终端设备为第一终端设备。该第一终端设备可以包括：处理器91(例如CPU)、存储器92、接收器93、发送器94；接收器93和发送器94均耦合至处理器91，处理器91控制接收器93的接收动作，处理器91控制发送器94的发送动作。存储器92可能包含高速RAM存储器，也可能还包括非易失性存储器NVM，例如至少一个磁盘存储器，存储器92中可以存储各种指令，以用于完成各种处理功能以及实现本申请的方法步骤。可选的，本申请涉及的第一终端设备还可以包括：电源95、通信总线96以及通信端口97。接收器93和发送器94可以集成在第一终端设备的收发信机中，也可以为第一终端设备上独立的收发天线。通信总线96用于实现元件之间的通信连接。上述通信端口97用于实现第一终端设备与其他外设之间进行连接通信。
在本申请中，上述存储器92用于存储计算机可执行程序代码，程序代码包括指令；当处理器91执行指令时，指令使处理器91执行上述方法实施例中图5所示的第一终端设备的处理的动作，使接收器93执行上述方法实施例中图5所示的第一终端设备的接收的动作，使发送器94执行上述方法实施例中图5所示的第一终端设备的发送的动作，其实现原理和技术效果类似，在此不再赘述。
图17为本申请提供的又一种终端设备的结构示意图。如图17所示，该终端设备为第一终端设备。该第一终端设备可以包括：处理器101(例如CPU)、存储器102、发送器104；发送器104耦合至处理器101，处理器101控制发送器104的发送动作。存储器102可能包含高速RAM存储器，也可能还包括非易失性存储器NVM，例如至少一个磁盘存储器，存储器102中可以存储各种指令，以用于完成各种处理功能以及实现本申请的方法步骤。可选的，本申请涉及的第一终端设备还可以包括：接收器103、电源105、通信总线106以及通信端口107。接收器103和发送器104可以集成在第一终端设备的收发信机中，也可以为第一终端设备上独立的收发天线。通信总线106用于实现元件之间的通信连接。上述通信端口107用于实现第一终端设备与其他外设之间进行连接通信。
在本申请中，上述存储器102用于存储计算机可执行程序代码，程序代码包括指令；当处理器101执行指令时，指令使处理器101执行上述方法实施例中图6所示的第一终端设备的处理的动作，使发送器104执行上述方法实施例中图6所示的第一终端设备的发送的动作，其实现原理和技术效果类似，在此不再赘述。
图18为本申请提供的另一种网络设备的结构示意图。如图18所示，该网络设备可以 包括：处理器111(例如CPU)、存储器112、接收器113和发送器114；接收器113和发送器114均耦合至处理器111，处理器111控制接收器113的接收动作，处理器111控制发送器114的发送动作。存储器112可能包含高速RAM存储器，也可能还包括非易失性存储器NVM，例如至少一个磁盘存储器，存储器112中可以存储各种指令，以用于完成各种处理功能以及实现本申请的方法步骤。可选的，本申请涉及的网络设备还可以包括：电源115、通信总线116以及通信端口117。接收器113和发送器114可以集成在网络设备的收发信机中，也可以为网络设备上独立的收发天线。通信总线116用于实现元件之间的通信连接。上述通信端口117用于实现网络设备与其他外设之间进行连接通信。
在本申请中，上述存储器112用于存储计算机可执行程序代码，程序代码包括指令；当处理器111执行指令时，指令使处理器111控制发送器114执行上述方法实施例中网络设备的发送的动作，控制接收器113执行上述方法实施例中网络设备的接收的动作，其实现原理和技术效果类似，在此不再赘述。
图19为本申请提供的又一种终端设备的结构示意图。如图19所示，该终端设备为第二终端设备。该第二终端设备可以包括：处理器121(例如CPU)、存储器122、接收器123；接收器123耦合至处理器121，处理器121控制接收器123的接收动作。存储器122可能包含高速RAM存储器，也可能还包括非易失性存储器NVM，例如至少一个磁盘存储器，存储器122中可以存储各种指令，以用于完成各种处理功能以及实现本申请的方法步骤。可选的，本申请涉及的网络设备还可以包括：发送器124、电源125、通信总线126以及通信端口127。接收器123和发送器124可以集成在网络设备的收发信机中，也可以为网络设备上独立的收发天线。通信总线126用于实现元件之间的通信连接。上述通信端口127用于实现网络设备与其他外设之间进行连接通信。
在本申请中，上述存储器122用于存储计算机可执行程序代码，程序代码包括指令；当处理器121执行指令时，指令使处理器121控制发送器124执行上述方法实施例中第二终端设备的处理的动作，使接收器123执行上述方法实施例中第二终端设备的接收的动作，其实现原理和技术效果类似，在此不再赘述。
本申请还提供了一种通信系统，所述通信系统包括前述实施例所述的第一终端设备、网络设备，以及，第二终端设备，其实现原理和技术效果类似，在此不再赘述。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本申请实施例的流程或功能。计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘solid state disk(SSD))等。

Claims (67)

  1. 一种数据传输方法，其特征在于，包括：
    第一终端设备接收网络设备发送的第一信息，所述第一信息用于指示所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据，所述第一信息包括第一元素；所述第一元素包括下述一个或多个标识：所述待发送数据的数据优先级标识、所述待发送数据所属的业务类型标识、所述待发送数据所属的服务质量流标识、所述待发送数据的目的地址标识、所述n个逻辑信道所在的逻辑信道组标识、所述n个逻辑信道对应的n个载波标识、所述PDCP实体的标识；所述n为大于1的正整数；
    所述第一终端设备根据所述第一信息，将所述n个逻辑信道的n个数据分别封装到n个媒体接入控制MAC协议数据单元PDU，所述n个数据均包括：所述待发送数据；
    所述第一终端设备通过直通链路向第二终端设备发送所述n个MAC PDU，所述n个MAC PDU使用n个载波承载。
  2. 根据权利要求1所述的方法，其特征在于，所述第一信息还包括第二元素；
    在所述第二元素为第一取值时，所述第一信息，用于指示所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据；在所述第二元素为第二取值时，所述第一信息，用于指示所述第一终端设备停止使用所述n个逻辑信道传输同一PDCP实体的同一个待发送数据。
  3. 根据权利要求1所述的方法，其特征在于，所述第一信息用于指示所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据，包括：
    所述第一信息用于激活所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述待发送数据所属的服务质量流与所述待发送数据的可靠性对应。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述待发送数据所属的服务质量流标识与所述待发送数据的可靠性对应。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，所述第一元素包括：位图；所述位图中的一个比特位对应一个标识。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，所述第一信息还包括：第三元素；
    所述第三元素用于指示所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据的最大时长。
  8. 根据权利要求1-7任一项所述的方法，其特征在于，所述第一信息携带在MAC控制元素CE或无线资源控制RRC信令中。
  9. 根据权利要求1-8任一项所述的方法，其特征在于，所述第一终端设备接收网络设备发送的第一信息之前，所述方法还包括：
    所述第一终端设备向所述网络设备发送第二信息，所述第二信息用于请求激活所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据。
  10. 根据权利要求9所述的方法，其特征在于，所述第二信息包括下述一项或多项： 所述待发送数据的数据优先级标识、所述待发送数据所属的业务的类型标识、所述待发送数据所属的服务质量流标识、所述待发送数据的目的地址标识、所述PDCP实体的标识、所述n个逻辑信道中的至少一个逻辑信道对应的信道拥塞程度。
  11. 一种数据传输方法，其特征在于，包括：
    第一终端设备将n个逻辑信道的n个数据分别封装到n个媒体接入控制MAC协议数据单元PDU，所述n个数据均包括：同一分组数据汇聚协议PDCP实体的同一待发送数据，所述n为大于1的正整数；
    所述第一终端设备通过直通链路向第二终端设备发送所述n个MAC PDU，以及，所述n个数据对应的重传标识，所述n个MAC PDU使用n个载波承载。
  12. 根据权利要求11所述的方法，其特征在于，所述n个数据对应的重传标识携带在所述n个数据中；
    所述重传标识包括下述一项或多项：所述待发送数据所属的PDCP实体的标识、所述待发送数据的数据优先级标识、所述待发送数据的服务质量流标识、所述待发送数据的目的地址标识、所述待发送数据对应的业务类型标识。
  13. 根据权利要求11所述的方法，其特征在于，所述重传标识携带在所述n个MAC PDU中至少一个MAC PDU的MAC控制元素CE中，或者所述待发送数据所在的MAC服务数据单元SDU对应的子头中。
  14. 根据权利要求13所述的方法，其特征在于，所述重传标识包括：所述n个逻辑信道的标识，和/或，所述n个逻辑信道对应的无线链路控制协议RLC实体的标识。
  15. 根据权利要求13所述的方法，其特征在于，在所述重传标识为第一取值时，所述重传标识用于指示所述第一终端设备使用预设的所述n个逻辑信道传输同一PDCP实体的同一待发送数据。
  16. 一种数据传输方法，其特征在于，包括：
    网络设备向第一终端设备发送第一信息，所述第一信息用于指示所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据，所述第一信息包括第一元素；所述第一元素包括下述一个或多个标识：所述待发送数据的数据优先级标识、所述待发送数据所属的业务类型标识、所述待发送数据所属的服务质量流标识、所述待发送数据的目的地址标识、所述n个逻辑信道所在的逻辑信道组标识、所述n个逻辑信道对应的n个载波标识、所述PDCP实体的标识，所述n为大于1的正整数。
  17. 根据权利要求16所述的方法，其特征在于，所述第一信息包括第二元素；
    在所述第二元素为第一取值时，所述第一信息，用于指示所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据；在所述第二元素为第二取值时，所述第一信息，用于指示所述第一终端设备停止使用所述n个逻辑信道传输同一PDCP实体的同一个待发送数据。
  18. 根据权利要求16所述的方法，其特征在于，所述第一信息用于指示所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据，包括：
    所述第一信息用于激活所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据。
  19. 根据权利要求16-18任一项所述的方法，其特征在于，所述待发送数据所属的服务质量流与所述待发送数据的可靠性对应。
  20. 根据权利要求16-19任一项所述的方法，其特征在于，所述待发送数据所属的服务质量流标识与所述待发送数据的可靠性对应。
  21. 根据权利要求16-20任一项所述的方法，其特征在于，所述第一元素包括：位图；所述位图中的一个比特位对应一个标识。
  22. 根据权利要求16-21任一项所述的方法，其特征在于，所述第一信息还包括：第三元素；
    所述第三元素用于指示所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据的最大时长。
  23. 根据权利要求16-22任一项所述的方法，其特征在于，所述第一信息携带在媒体接入控制MAC控制元素CE或无线资源控制RRC信令中。
  24. 根据权利要求16-23任一项所述的方法，其特征在于，所述网络设备向第一终端设备发送第一信息之前，所述方法还包括：
    所述网络设备接收所述第一终端设备发送的第二信息，所述第二信息用于请求激活所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据。
  25. 根据权利要求24所述的方法，其特征在于，所述第二信息包括下述一项或多项：所述待发送数据的数据优先级标识、所述待发送数据所属的业务的类型标识、所述待发送数据所属的服务质量流标识、所述待发送数据的目的地址标识、所述PDCP实体的标识、所述n个逻辑信道中的至少一个逻辑信道对应的信道拥塞程度。
  26. 一种数据传输方法，其特征在于，包括：
    第二终端设备通过直通链路接收第一终端设备发送的n个媒体接入控制MAC协议数据单元PDU，以及，所述n个数据对应的重传标识，所述n个MAC PDU使用n个载波承载，所述n个MAC PDU分别封装有n个逻辑信道的n个数据，所述n个数据均包括：同一分组数据汇聚协议PDCP实体的同一待发送数据，所述n为大于1的正整数；
    所述第二终端设备根据所述n个数据对应的重传标识，使用同一PDCP实体处理所述n个数据。
  27. 根据权利要求26所述的方法，其特征在于，所述n个数据对应的重传标识携带在所述n个数据中；
    所述重传标识包括下述一项或多项：
    所述待发送数据所属的PDCP实体的标识、所述待发送数据的数据优先级标识、所述待发送数据的服务质量流标识、所述待发送数据的目的地址标识、所述待发送数据对应的业务类型标识。
  28. 根据权利要求26所述的方法，其特征在于，所述重传标识携带在所述n个MAC PDU中至少一个MAC PDU的MAC控制元素CE中，或者所述待发送数据所在的MAC服务数据单元SDU对应的子头中。
  29. 根据权利要求28所述的方法，其特征在于，所述重传标识包括：所述n个逻辑信道的标识，和/或，所述n个逻辑信道对应的无线链路控制协议RLC实体的标识。
  30. 根据权利要求28所述的方法，其特征在于，在所述重传标识为第一取值时，所 述重传标识用于指示所述第一终端设备使用预设的所述n个逻辑信道传输同一PDCP实体的同一待发送数据。
  31. 一种终端设备，其特征在于，所述终端设备为第一终端设备，所述第一终端设备包括：
    接收模块，用于接收网络设备发送的第一信息，所述第一信息用于指示所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据，所述第一信息包括第一元素；所述第一元素包括下述一个或多个标识：所述待发送数据的数据优先级标识、所述待发送数据所属的业务类型标识、所述待发送数据所属的服务质量流标识、所述待发送数据的目的地址标识、所述n个逻辑信道所在的逻辑信道组标识、所述n个逻辑信道对应的n个载波标识、所述PDCP实体的标识；所述n为大于1的正整数；
    处理模块，用于根据所述第一信息，将所述n个逻辑信道的n个数据分别封装到n个媒体接入控制MAC协议数据单元PDU，所述n个数据均包括：所述待发送数据；
    发送模块，用于通过直通链路向第二终端设备发送所述n个MAC PDU，所述n个MAC PDU使用n个载波承载。
  32. 根据权利要求31所述的终端设备，其特征在于，所述第一信息还包括第二元素；
    在所述第二元素为第一取值时，所述第一信息，用于指示所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据；在所述第二元素为第二取值时，所述第一信息，用于指示所述第一终端设备停止使用所述n个逻辑信道传输同一PDCP实体的同一个待发送数据。
  33. 根据权利要求31所述的终端设备，其特征在于，所述第一信息用于指示所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据，包括：
    所述第一信息用于激活所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据。
  34. 根据权利要求31-33任一项所述的终端设备，其特征在于，所述待发送数据所属的服务质量流与所述待发送数据的可靠性对应。
  35. 根据权利要求31-34任一项所述的终端设备，其特征在于，所述待发送数据所属的服务质量流标识与所述待发送数据的可靠性对应。
  36. 根据权利要求31-35任一项所述的终端设备，其特征在于，所述第一元素包括：位图；所述位图中的一个比特位对应一个标识。
  37. 根据权利要求31-36任一项所述的终端设备，其特征在于，所述第一信息还包括：第三元素；所述第三元素用于指示所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据的最大时长。
  38. 根据权利要求31-37任一项所述的终端设备，其特征在于，所述第一信息携带在MAC控制元素CE或无线资源控制RRC信令中。
  39. 根据权利要求31-38任一项所述的终端设备，其特征在于，所述发送模块，还用于在所述接收模块接收网络设备发送的第一信息之前，向所述网络设备发送第二信息，所述第二信息用于请求激活所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据。
  40. 根据权利要求39所述的终端设备，其特征在于，所述第二信息包括下述一项或多项：所述待发送数据的数据优先级标识、所述待发送数据所属的业务的类型标识、所述待发送数据所属的服务质量流标识、所述待发送数据的目的地址标识、所述PDCP实体的标识、所述n个逻辑信道中的至少一个逻辑信道对应的信道拥塞程度。
  41. 一种终端设备，其特征在于，所述终端设备为第一终端设备，所述第一终端设备包括：
    处理模块，用于将n个逻辑信道的n个数据分别封装到n个媒体接入控制MAC协议数据单元PDU，所述n个数据均包括：同一分组数据汇聚协议PDCP实体的同一待发送数据，所述n为大于1的正整数；
    发送模块，用于通过直通链路向第二终端设备发送所述n个MAC PDU，以及，所述n个数据对应的重传标识，所述n个MAC PDU使用n个载波承载。
  42. 根据权利要求41所述的终端设备，其特征在于，所述n个数据对应的重传标识携带在所述n个数据中；
    所述重传标识包括下述一项或多项：
    所述待发送数据所属的PDCP实体的标识、所述待发送数据的数据优先级标识、所述待发送数据的服务质量流标识、所述待发送数据的目的地址标识、所述待发送数据对应的业务类型标识。
  43. 根据权利要求41所述的终端设备，其特征在于，所述重传标识携带在所述n个MAC PDU中至少一个MAC PDU的MAC控制元素CE中，或者所述待发送数据所在的MAC服务数据单元SDU对应的子头中。
  44. 根据权利要求43所述的终端设备，其特征在于，所述重传标识包括：所述n个逻辑信道的标识，和/或，所述n个逻辑信道对应的无线链路控制协议RLC实体的标识。
  45. 根据权利要求43所述的终端设备，其特征在于，在所述重传标识为第一取值时，所述重传标识用于指示所述第一终端设备使用预设的所述n个逻辑信道传输同一PDCP实体的同一待发送数据。
  46. 一种网络设备，其特征在于，所述网络设备包括：
    发送模块，用于向第一终端设备发送第一信息，所述第一信息用于指示所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据，所述第一信息包括第一元素；所述第一元素包括下述一个或多个标识：所述待发送数据的数据优先级标识、所述待发送数据所属的业务类型标识、所述待发送数据所属的服务质量流标识、所述待发送数据的目的地址标识、所述n个逻辑信道所在的逻辑信道组标识、所述n个逻辑信道对应的n个载波标识、所述PDCP实体的标识，所述n为大于1的正整数。
  47. 根据权利要求46所述的网络设备，其特征在于，所述第一信息包括第二元素；
    在所述第二元素为第一取值时，所述第一信息，用于指示所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据；在所述第二元素为第二取值时，所述第一信息，用于指示所述第一终端设备停止使用所述n个逻辑信道传输同一PDCP实体的同一个待发送数据。
  48. 根据权利要求46所述的网络设备，其特征在于，所述第一信息用于指示所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送 数据，包括：
    所述第一信息用于激活所述第一终端设备使用n个逻辑信道传输同一分组数据汇聚协议PDCP实体的同一待发送数据。
  49. 根据权利要求46-48任一项所述的网络设备，其特征在于，所述待发送数据所属的服务质量流与所述待发送数据的可靠性对应。
  50. 根据权利要求46-49任一项所述的网络设备，其特征在于，所述待发送数据所属的服务质量流标识与所述待发送数据的可靠性对应。
  51. 根据权利要求46-50任一项所述的网络设备，其特征在于，所述第一元素包括：位图；所述位图中的一个比特位对应一个标识。
  52. 根据权利要求46-51任一项所述的网络设备，其特征在于，所述第一信息还包括：第三元素；
    所述第三元素用于指示所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据的最大时长。
  53. 根据权利要求46-52任一项所述的网络设备，其特征在于，所述第一信息携带在媒体接入控制MAC控制元素CE或无线资源控制RRC信令中。
  54. 根据权利要求46-53任一项所述的网络设备，其特征在于，所述网络设备还包括：
    接收模块，用于在所述发送模块向第一终端设备发送第一信息之前，接收所述第一终端设备发送的第二信息，所述第二信息用于请求激活所述第一终端设备使用所述n个逻辑信道传输同一PDCP实体的同一待发送数据。
  55. 根据权利要求54所述的网络设备，其特征在于，所述第二信息包括下述一项或多项：所述待发送数据的数据优先级标识、所述待发送数据所属的业务的类型标识、所述待发送数据所属的服务质量流标识、所述待发送数据的目的地址标识、所述PDCP实体的标识、所述n个逻辑信道中的至少一个逻辑信道对应的信道拥塞程度。
  56. 一种终端设备，其特征在于，所述终端设备为第二终端设备，所述第二终端设备包括：
    接收模块，用于通过直通链路接收第一终端设备发送的n个媒体接入控制MAC协议数据单元PDU，以及，所述n个数据对应的重传标识，所述n个MAC PDU使用n个载波承载，所述n个MAC PDU分别封装有n个逻辑信道的n个数据，所述n个数据均包括：同一分组数据汇聚协议PDCP实体的同一待发送数据，所述n为大于1的正整数；
    处理模块，用于根据所述n个数据对应的重传标识，使用同一PDCP实体处理所述n个数据。
  57. 根据权利要求56所述的终端设备，其特征在于，所述n个数据对应的重传标识携带在所述n个数据中；
    所述重传标识包括下述一项或多项：
    所述待发送数据所属的PDCP实体的标识、所述待发送数据的数据优先级标识、所述待发送数据的服务质量流标识、所述待发送数据的目的地址标识、所述待发送数据对应的业务类型标识。
  58. 根据权利要求56所述的终端设备，其特征在于，所述重传标识携带在所述n个MAC PDU中至少一个MAC PDU的MAC控制元素CE中，或者所述待发送数据所在的 MAC服务数据单元SDU对应的子头中。
  59. 根据权利要求58所述的终端设备，其特征在于，所述重传标识包括：所述n个逻辑信道的标识，和/或，所述n个逻辑信道对应的无线链路控制协议RLC实体的标识。
  60. 根据权利要求58所述的终端设备，其特征在于，在所述重传标识为第一取值时，所述重传标识用于指示所述第一终端设备使用预设的所述n个逻辑信道传输同一PDCP实体的同一待发送数据。
  61. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机程序或指令，当所述计算机程序或指令被运行时，实现如权利要求1至15任一项所述的方法。
  62. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机程序或指令，当所述计算机程序或指令被运行时，实现如权利要求16至25任一项所述的方法。
  63. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机程序或指令，当所述计算机程序或指令被运行时，实现如权利要求26至30任一项所述的方法。
  64. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机程序或指令，当所述计算机程序或指令被运行时，实现如权利要求1至15任一项所述的方法。
  65. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机程序或指令，当所述计算机程序或指令被运行时，实现如权利要求16至25任一项所述的方法。
  66. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机程序或指令，当所述计算机程序或指令被运行时，实现如权利要求26至30任一项所述的方法。
  67. 一种通信系统，其特征在于，所述通信系统包括如权利要求31-45任一项所述的第一终端设备、如权利要求46-55任一项所述的网络设备，以及，如权利要求56-60任一项所述的第二终端设备。
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