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WO2018171540A1 - 信息传输的方法、装置、系统及存储介质 - Google Patents

信息传输的方法、装置、系统及存储介质 Download PDF

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Publication number
WO2018171540A1
WO2018171540A1 PCT/CN2018/079418 CN2018079418W WO2018171540A1 WO 2018171540 A1 WO2018171540 A1 WO 2018171540A1 CN 2018079418 W CN2018079418 W CN 2018079418W WO 2018171540 A1 WO2018171540 A1 WO 2018171540A1
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Prior art keywords
sidelink
retransmission
configuration information
feedback
harq
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PCT/CN2018/079418
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English (en)
French (fr)
Inventor
汪梦珍
陈琳
陈玉芹
Original Assignee
中兴通讯股份有限公司
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Priority to US16/496,902 priority Critical patent/US11641570B2/en
Publication of WO2018171540A1 publication Critical patent/WO2018171540A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—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]
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    • H—ELECTRICITY
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    • 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
    • H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
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    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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    • H04L1/1607—Details of the supervisory signal
    • H04L1/1685—Details of the supervisory signal the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal
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    • H—ELECTRICITY
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    • 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
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    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04L5/0082—Timing of allocation at predetermined intervals
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    • H04W—WIRELESS COMMUNICATION NETWORKS
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    • H04W76/27—Transitions between radio resource control [RRC] states
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    • 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
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    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
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    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present invention relates to wireless communication technologies, and in particular, to a method, an apparatus, a system, and a storage medium for information transmission.
  • V2X Vehicle-to-Everything Communications
  • V2X Vehicle-to-Everything Communications
  • V2P Vehicle-to-human communication
  • V2I Vehicle-to-Infrastructure Communications
  • V2N Vehicle-to-Network Communications
  • LTE-based V2X car networking information is mainly transmitted through broadcast and multicast, for example, based on Multicast/Multicast Single Frequency Network (MBSFN) and single-cell point-to-multipoint (SC-PTM, Single Cell-Point To Multi-point) broadcast mechanism.
  • MMSFN Multicast/Multicast Single Frequency Network
  • SC-PTM single-cell point-to-multipoint
  • the mechanism of direct discovery or communication between user equipments (UEs) in the vehicle can be implemented by broadcast transmission through the PC5 interface.
  • the 3GPP R14 (Release 14) version of the protocol specifies that the main performance requirements of LTE-based V2X are a minimum delay of 20ms and a reliability of over 95%; and enhanced V2X (eV2X, enhanced V2X) communication compared to the above LTE-based V2X puts forward higher performance requirements to support vehicle networking applications such as vehicle teaming, remote driving, and sensor applications.
  • the performance requirements of eV2X include 99% to 99.999% reliability and 3 to 10ms delay requirements.
  • the current V2X communication technology through the PC5 interface cannot meet the high reliability requirements of the eV2X scenario.
  • embodiments of the present invention are expected to provide a method, an apparatus, a system, and a storage medium for information transmission, which can achieve high reliability of vehicle networking communication requirements, thereby improving the reliability and security of the vehicle networking communication service.
  • an embodiment of the present invention provides a method for information transmission, where the method is applied to a UE in a car network architecture, and the method includes:
  • the UE acquires sidechain sidelink retransmission configuration information
  • the UE performs sidelink feedback or sidelink retransmission according to the sidelink retransmission configuration information.
  • the sidelink retransmission configuration information includes at least one of the following information: sidelink retransmission mode, sidelink transmission reliability information, media access control (MAC, Media Access Contro) retransmission configuration information, and radio link.
  • Control RLC, Radio Link Control
  • retransmission configuration information sidelink feedback or transmission or retransmission resources, sidelink logical channel or bearer mapped parameter configuration numerology or sidelink logical channel or bearer mapped transmission time interval (TTI, Transmission Time) Interval) frame length information.
  • TTI Transmission Time
  • the sidelink retransmission mode includes any one of the following modes: Hybrid Automatic Repeat reQuest (HARQ), continuous retransmission, and automatic retransmission (ARQ) continuous retransmission (ARQ) , HARQ feedback and HARQ retransmission, HARQ retransmission, and combination of ARQ feedback and ARQ retransmission, HARQ feedback and HARQ retransmission, and combination of ARQ feedback and ARQ retransmission.
  • HARQ Hybrid Automatic Repeat reQuest
  • ARQ automatic retransmission
  • ARQ automatic retransmission
  • the MAC retransmission configuration information includes at least one of the following: HARQ continuous retransmission times, HARQ maximum retransmission times, HARQ process numbers, sidelink transmission power, sidelink modulation and coding patterns (MCS, Modulation and Coding Scheme), and the redundancy version number.
  • the RLC retransmission configuration information includes: sending RLC retransmission configuration information and or receiving RLC retransmission configuration information; where the sending RLC retransmission configuration information includes: ARQ consecutive retransmission times or the following information Any combination of ARQ maximum retransmission times, RLC AM (Acknowledged Mode) acknowledgement mode sequence number length, polling retransmission timer, polling protocol data unit, and polling byte number; the receiving RLC retransmission configuration information includes : RLC AM sequence number length, reorder timer, and status disable timer.
  • the sending RLC retransmission configuration information includes: ARQ consecutive retransmission times or the following information Any combination of ARQ maximum retransmission times, RLC AM (Acknowledged Mode) acknowledgement mode sequence number length, polling retransmission timer, polling protocol data unit, and polling byte number
  • the receiving RLC retransmission configuration information includes : RLC AM sequence number length, reorder timer, and status disable timer.
  • the reordering timer is set to zero, or the reordering timer is not configured;
  • the reordering timer is set according to the maximum number of HARQ retransmissions and the time required for the HARQ retransmission, or the numerology or TTI frame length information mapped according to the sidelink logical channel or bearer. Setting at least one of the values of the reordering timer.
  • the sidelink feedbacks or transmits or retransmits resources including at least one of: a resource indication for transmitting sidelink HARQ feedback, a resource or resource pool for sidelink communication transmission, and a half for sidelink communication transmission.
  • Static resources, resources/resource pools for retransmission of sidelink communications, pairing resources for sidelink communication transmission/retransmission and sidelink HARQ feedback, for sidelink communication transmission/retransmission resources and for sidelink HARQ feedback resources The pairing relationship; wherein the resource indication for transmitting the sidelink HARQ feedback includes at least one of the following: a time relationship of the sidelink HARQ transmission and feedback, a frame offset, a subframe offset, a resource pattern or a resource bitmap, and a resource index.
  • the UE acquires sidechain sidelink retransmission configuration information, including:
  • the UE receives the sidelink retransmission configuration information sent by the peer UE.
  • the receiving, by the UE, the sidelink retransmission configuration information sent by the base station includes:
  • the UE receives the sidelink retransmission configuration information from the RRC dedicated signaling.
  • the UE acquires the sidelink retransmission configuration information by using pre-configuration information, including:
  • the UE obtains pre-configuration information including the sidelink retransmission configuration information from a proximity service function entity ProSe Function or a V2X control function entity V2X control function.
  • the UE receives the sidelink retransmission configuration information sent by the peer UE, including:
  • the UE receives the sidelink control information SCI sent by the opposite UE and carrying the sidelink feedback resource.
  • the method before the acquiring the sidechain retransmission configuration information by the UE, the method includes:
  • the UE sends the sidelink retransmission indication information to the base station, where the sidelink retransmission indication information includes at least one of the following: service/bearer reliability requirement/level, service/bearer loss rate requirement, service type, priority, Delay demand, sidelink retransmission request indication, UE-prone sidelink retransmission configuration, sidelink retransmission configuration supported by UE, sidelink resource request and sidelink buffer status report.
  • the sidelink retransmission indication information includes at least one of the following: service/bearer reliability requirement/level, service/bearer loss rate requirement, service type, priority, Delay demand, sidelink retransmission request indication, UE-prone sidelink retransmission configuration, sidelink retransmission configuration supported by UE, sidelink resource request and sidelink buffer status report.
  • the method before or after the UE receives the sidelink retransmission configuration information sent by the base station, the method further includes:
  • a sidelink transmission power and/or a sidelink modulation coding pattern MCS configured by the base station, where the transmission power and/or MCS of the UE is monitored by the base station by monitoring transmission and feedback on the sidelink, and according to the feedback of the receiving UE NACK frequency is configured.
  • the UE performs sidelink feedback according to the sidelink retransmission configuration information, including at least one of the following:
  • the UE When the UE is configured as sidelink HARQ feedback, the UE performs sidelink HARQ feedback using the received resource for transmitting sidelink HARQ feedback; or
  • the UE When the UE is configured as sidelink ARQ feedback, the UE performs sidelink ARQ feedback according to the received RLC retransmission configuration information.
  • the UE performs sidelink retransmission according to the sidelink retransmission configuration information, including at least one of the following:
  • the UE When the UE selects or is configured as a HARQ continuous retransmission, the UE performs sidelink retransmission according to the number of consecutive HARQ retransmissions;
  • the UE When the UE selects or is configured to perform ARQ continuous retransmission, the UE performs sidelink retransmission according to the number of consecutive ARQ retransmissions;
  • the UE When the UE selects or is configured as HARQ feedback and HARQ retransmission, the UE performs sidelink retransmission according to one or more of HARQ maximum retransmission times, sidelink transmission power, sidelink MCS, and redundancy version number. ;
  • the UE When the UE selects or is configured as a combination of HARQ retransmission and ARQ feedback and ARQ retransmission, the UE performs sidelink retransmission according to the number of HARQ consecutive retransmissions and the RLC retransmission configuration information;
  • the UE When the UE selects or is configured as a combination of HARQ feedback and HARQ retransmission and ARQ feedback and ARQ retransmission, the UE is based on HARQ maximum retransmission times, sidelink transmission power, sidelink MCS and redundancy version number, and RLC. Retransmit one or more of the configuration information to perform sidelink retransmission;
  • the UE performs sidelink retransmission using the preconfigured sidelink retransmission configuration information.
  • the method before or after the UE performs sidelink retransmission according to the sidelink retransmission configuration information, the method further includes:
  • the UE adjusts the sidelink transmission power and/or the MCS of the sidelink.
  • the method before the performing the sidelink retransmission by the UE according to the sidelink retransmission configuration information, the method further includes:
  • the UE receives the sidelink HARQ feedback or the sidelink ARQ feedback sent by the peer UE.
  • the method before or after the UE performs sidelink retransmission according to the sidelink retransmission configuration information, the method further includes:
  • the UE receives the lost data packet on the sidelink sent by the base station.
  • an embodiment of the present invention provides a method for information transmission, where the method is applied to a base station in a car network architecture, and the method includes:
  • the base station sends sidelink retransmission configuration information to the UE.
  • the method before the sending, by the base station, the sidelink retransmission configuration information to the UE, the method further includes:
  • the sidelink retransmission indication information includes at least one of the following: service/bearer reliability requirement/level, service/bearer packet loss rate requirement, service type, priority, delay requirement, sidelink retransmission requirement indication, UE preference
  • service/bearer reliability requirement/level service/bearer packet loss rate requirement
  • service type service type
  • priority priority
  • delay requirement sidelink retransmission requirement indication
  • UE preference The sidelink retransmission configuration, the sidelink retransmission configuration supported by the UE, the sidelink resource request, and the sidelink buffer status report.
  • the method further includes:
  • the base station monitors transmission and feedback on the sidelink
  • the base station configures or modifies the sidelink transmission power and/or the MCS of the sidelink for the UE transmitting the information, or the base station transmits the lost data packet on the sidelink to the UE receiving the information.
  • the base station sends the lost data packet on the sidelink to the UE that receives the information, including:
  • the base station monitors transmission and feedback on the sidelink
  • the base station When the NACK feedback is monitored, the base station sends the lost data packet to the UE receiving the information through the downlink subframe in the Uu interface or the sidelink resource in the uplink subframe.
  • an embodiment of the present invention provides a UE, where the UE includes: an acquiring module and an executing module;
  • the acquiring module is configured to acquire sidechain sidelink retransmission configuration information
  • the executing module is configured to perform sidelink feedback or sidelink retransmission according to the sidelink retransmission configuration information.
  • the embodiment of the present invention provides a base station, where the base station includes: a second sending module, configured to send sidelink retransmission configuration information to the UE.
  • an embodiment of the present invention provides a non-transitory computer readable storage medium storing computer program instructions, the computer program instructions being configured to be executed by an electronic device, the computer program instructions comprising instructions for :
  • an embodiment of the present invention provides a UE, including: a first communication interface, a first memory, a first processor, and a first bus;
  • the first bus is configured to connect the first communication interface, the first processor and the first memory, and mutual communication between the devices;
  • the first communication interface is configured to perform data transmission with an external network element
  • the first memory is configured to store instructions and data
  • the first processor is configured to: when the instruction is executed, obtain: sidelink retransmission configuration information; and perform sidelink feedback or sidelink retransmission according to the sidelink retransmission configuration information.
  • an embodiment of the present invention provides a non-transitory computer readable storage medium storing computer program instructions, the computer program instructions being configured to be executed by an electronic device, the computer program instructions comprising instructions for :
  • an embodiment of the present invention provides a base station, where the base station includes: a second communication interface, a second memory, a second processor, and a second bus;
  • the second bus is configured to connect the second communication interface, the second processor and the second memory, and mutual communication between the devices;
  • the second communication interface is configured to perform data transmission with an external network element
  • the second memory is configured to store instructions and data
  • the second processor is configured to: when the instruction is executed, send the sidelink retransmission configuration information to the UE.
  • an embodiment of the present invention provides a system for information transmission, where the system includes: a user equipment UE and a base station in a car network architecture, where
  • the UE is configured to acquire sidechain sidelink retransmission configuration information
  • the base station is configured to send sidelink retransmission configuration information to the UE.
  • the method, the device, the system, and the storage medium for information transmission provided by the embodiments of the present invention use the appropriate sidelink retransmission configuration information to ensure reliability, so as to satisfy the high requirements in different scenarios and applications or services with different reliability requirements. Reliability of the vehicle networking communication needs.
  • FIG. 1 is a schematic diagram of a car networking architecture according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method for information transmission according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of another method for information transmission according to an embodiment of the present disclosure.
  • FIG. 4 is a flowchart 1 of a method for transmitting information according to an embodiment of the present invention.
  • FIG. 5 is a second flowchart of a method for transmitting information according to an embodiment of the present invention.
  • FIG. 6 is a flowchart 3 of a method for implementing information transmission according to an embodiment of the present invention.
  • FIG. 7 is a flowchart 4 of a method for transmitting information according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of implementing a method for information transmission according to an embodiment of the present invention.
  • FIG. 9 is a flowchart 6 of a method for transmitting information according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a UE according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of another UE according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a hardware of a UE according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of another base station according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of hardware of a base station according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of a system for information transmission according to an embodiment of the present invention.
  • the car network communication service may generally include: a V2V service, a V2I service, a V2N service, and a V2P service.
  • a V2V service For the car network communication service, the car network communication service may generally include: a V2V service, a V2I service, a V2N service, and a V2P service.
  • the V2P service refers to a service in which a vehicle UE communicates with a pedestrian-held UE through a V2P application.
  • the V2N service refers to a service in which the UE communicates with each other through the LTE network entity by using the V2N application.
  • the V2I service refers to a service in which a UE and a Roadside Unit (RSU) interact with each other through a V2I application.
  • RSU Roadside Unit
  • an RSU is an entity that supports a V2I service, and may pass a base station (for example, an evolved base station eNB) or a stationary UE. achieve.
  • eNB type RSU for example, an evolved base station eNB
  • the V2I service is as indicated by the arrow labeled V2I in Figure 1;
  • the RSU is implemented by the UE, it is called For the UE type RSU, as indicated by I* in Figure 1, the V2I service at this time is as indicated by the arrow labeled V2I* in Figure 1.
  • the V2V service refers to a service in which a vehicle UE communicates through a V2V application.
  • the V2V includes direct communication of V2V application information between the UEs of the vehicle, or in the case where the V2V direct communication range has a limitation, the vehicle UEs perform V2V application information through an infrastructure (for example, an RSU, an application server, etc.) supporting the V2X service. Communication.
  • the LTE includes a secondary retransmission processing mechanism, that is, a MAC, a layer HARQ mechanism, and an ARQ mechanism of the RLC layer.
  • a secondary retransmission processing mechanism that is, a MAC, a layer HARQ mechanism, and an ARQ mechanism of the RLC layer.
  • the ARQ mechanism is only for an acknowledge mode (AM, Acknowledged Mode).
  • the data retransmission for loss or error is mainly handled by the HARQ mechanism of the MAC layer, and is supplemented by the retransmission function of the RLC.
  • the MAC layer's HARQ mechanism can provide fast retransmission, and the RLC layer's ARQ mechanism can provide reliable data transmission. Therefore, the combination of the two can achieve small round trip time, moderate feedback overhead, and reliable transmission requirements.
  • sidelink transmission is at the MAC layer, and the HARQ mechanism supports 4 retransmissions, not supported.
  • Feedback in the R4 version of the 3GPP protocol for V2V, the number of transmissions per transport block is 1 or 2 times, that is, each transport block can only be retransmitted at most once; the number of transmissions can be configured by the eNB or by the UE. Determine by yourself. Therefore, current sidelink transmissions cannot meet the high reliability requirements of eV2X.
  • the following is an example of the vehicle networking architecture shown in FIG. 1 to improve the reliability and security of the vehicle networking communication service. It can be understood that the network architecture shown in FIG. 1 is only used to describe the embodiment. It is not intended to limit the embodiments.
  • the method may be applied to a UE in a car network, and the method may include:
  • S201 The UE acquires sidelink retransmission configuration information.
  • S202 The UE performs sideband feedback or sidechain retransmission according to the sidechain retransmission configuration information.
  • the UE involved in the technical solution shown in FIG. 2 may be included in the role of the participating communication, including but not limited to the UE that sends the information, the UE that receives the information, and the local peer UE;
  • the device may include, but is not limited to, a device-to-device (D2D), a vehicle UE, a pedestrian UE, and a UE-type RSU.
  • D2D device-to-device
  • vehicle UE vehicle UE
  • pedestrian UE a pedestrian UE
  • UE-type RSU UE-type RSU
  • the sidelink retransmission configuration information may include at least one of the following information: sidelink retransmission mode, sidelink transmission reliability information, sidelink logical channel or bearer identity, MAC retransmission configuration information, RLC retransmission The configuration information, sidelink feedback or transmission or retransmission resources, sidelink logical channel or bearer mapped parameter configuration numerology or sidelink logical channel or frame length information of the mapped TTI.
  • the sidelink retransmission mode may be used to configure the manner in which the UE performs feedback or retransmission, so that the UE is configured according to the UE.
  • the configured mode performs feedback or retransmission.
  • the sidelink retransmission mode may include any one of the following modes: HARQ continuous retransmission, ARQ continuous retransmission, HARQ feedback and HARQ retransmission, and HARQ retransmission.
  • the sidelink transmission reliability information mentioned in the above example may be used to indicate that the sidelink retransmission mode and/or the MAC retransmission configuration information and/or the RLC retransmission configuration information can provide reliable sidelink transmission.
  • the sidelink transmission reliability information may include at least one of the following: a quantized sidelink transmission reliability level, such as a high reliability level, a medium reliability level, and a low reliability level, and a sidelink transmission packet loss rate.
  • the sidelink logical channel or bearer identifier mentioned in the foregoing example may include: sidelink retransmission configuration information indicating a sidelink logical channel or bearer mapping; understandably, sidelink logical channels of different bearer levels. Or the bearers respectively have respective corresponding sidelink retransmission configuration information;
  • the MAC retransmission configuration information mentioned in the foregoing example may include at least one of the following information: a number of consecutive HARQ retransmissions, a maximum number of HARQ retransmissions, a HARQ process ID, a sidelink transmission power, and a sidelink. Modulation and MCS, and redundancy version number (RV, redundancy version).
  • the RLC retransmission configuration information mentioned in the foregoing example may include sending RLC retransmission configuration information and or receiving RLC retransmission configuration information, where sending RLC retransmission configuration information includes: ARQ continuous weight Any combination of the number of transmissions or the following: ARQ maximum number of retransmissions, RLC AM sequence number length, polling retransmission timer, polling protocol data unit, and polling byte number; and receiving RLC retransmission configuration information including: RLC AM serial number length, reordering timer t-reordering, and status prohibit timer t-statusprohibit.
  • t-reordering can be set to 0 or the reordering timer is not set.
  • the RLC layer of the UE receiving the information receives the non-sequentially received data packet, that is, the received information, and the UE finds that there is a data packet loss, and immediately triggers an ARQ feedback NACK (NACK may be an RLC status report) to request the UE to send information. Retransmit lost packets;
  • the sidelink retransmission mode includes HARQ feedback, that is, if the retransmission mode is a combination of HARQ feedback and HARQ retransmission and ARQ feedback and ARQ retransmission
  • the number of HARQ maximum retransmissions and the time required for HARQ retransmission may be set t. -reordering; Alternatively, the t-reordering value may be set in units of frame length information of the sidelink logical channel or the mapped numerology or TTI.
  • a resource indication for sending sidelink HARQ feedback may be included.
  • the step of acquiring the sidechain sidelink retransmission configuration information by the UE in S201 may include:
  • the UE receives the sidelink retransmission configuration information sent by the base station;
  • the UE obtains the sidelink retransmission configuration information by using the pre-configuration information
  • the UE receives the sidelink retransmission configuration information sent by the peer UE.
  • the base station when the technical solution is based on the LTE or eLTE architecture, the base station may be an eNB; when the technical solution is based on the fifth generation mobile communication technology (5G, 5th) -Generation), the base station may be a 5G base station (gNB), which is not described in detail in the embodiment of the present invention.
  • 5G, 5th fifth generation mobile communication technology
  • the UE receiving the sidelink retransmission configuration information sent by the base station in the foregoing example may include: the UE receiving the sidelink retransmission configuration information sent by the base station from the system broadcast message; or the UE from the radio resource.
  • the sidelink retransmission configuration information is received in the control (RRC, Radio Resource Control) proprietary signaling.
  • the UE that obtains the sidelink retransmission configuration information by using the pre-configuration information in the foregoing example may include: the UE from the ProSe Function (ProSeimity Based Services Function) or the V2X control function entity ( V2X control function) obtains pre-configuration information including sidelink retransmission configuration information;
  • the receiving, by the UE in the foregoing example, the sidelink retransmission configuration information sent by the peer UE may include: receiving, by the UE, the PC5 signaling sent by the peer UE and carrying the sidelink retransmission configuration information. And/or, the UE receives sidelink control information (SCI, Sidelink Control Information) sent by the peer UE and carrying the sidelink feedback resource.
  • SCI Sidelink Control Information
  • the sidelink retransmission configuration information may be a cell-level sidelink retransmission configuration information or a bearer level sidelink retransmission configuration information.
  • the method in this embodiment may further include:
  • the UE sends a sidelink retransmission indication information to the base station;
  • the base station may be an eNB, and for the fifth generation mobile communication technology (5G, 5th-Generation), the base station may be a 5G base station (gNB).
  • 5G fifth generation mobile communication technology
  • gNB 5G base station
  • the sidelink retransmission indication information includes at least one of the following: a service/bearer reliability requirement/level, a service/bearer loss rate requirement, a service type, a priority, a delay requirement, and a sidelink retransmission requirement indication.
  • the UE prefers the sidelink retransmission configuration, the sidelink retransmission configuration that the UE can support, the sidelink resource request, and the sidelink buffer status report.
  • the method may further include:
  • the UE receives the sidelink transmission power and/or the sidelink modulation coding pattern MCS configured by the base station; wherein the transmission power and/or MCS of the UE is monitored by the base station by listening to the transmission and feedback on the sidelink, and is configured according to the NACK frequency fed back by the UE. .
  • the step of S202 may include: performing, by the UE, sidelink feedback according to the sidelink retransmission configuration information, and performing, by the UE, sidelink retransmission according to the sidelink retransmission configuration information, where In the process of implementation,
  • the UE performs sidelink feedback according to the sidelink retransmission configuration information, and may include at least one of the following:
  • the UE When the UE is configured as sidelink HARQ feedback, the UE performs sidelink HARQ feedback using the received resource for transmitting sidelink HARQ feedback;
  • the UE When the UE is configured to perform sidelink ARQ feedback, the UE performs sidelink ARQ feedback according to the received RLC retransmission configuration information; understandably, the sidelink ARQ feedback may be in the form of a sidelink RLC status report;
  • the UE performs sidelink retransmission according to the sidelink retransmission configuration information, and may include at least one of the following:
  • the UE When the UE selects or is configured to perform HARQ continuous retransmission, the UE performs sidelink retransmission according to the number of consecutive HARQ retransmissions;
  • the UE When the UE selects or is configured to perform ARQ continuous retransmission, the UE performs sidelink retransmission according to the number of consecutive ARQ retransmissions;
  • the UE When the UE selects or is configured to perform HARQ feedback and HARQ retransmission, the UE performs sidelink retransmission according to one or more of HARQ maximum retransmission times, sidelink transmission power, sidelink MCS, and redundancy version number;
  • the UE When the UE selects or is configured as a combination of the HARQ retransmission and the ARQ feedback and the ARQ retransmission, the UE performs the sidelink retransmission according to the HARQ continuous retransmission times and the RLC retransmission configuration information;
  • the UE When the UE selects or is configured as a combination of HARQ feedback and HARQ retransmission and ARQ feedback and ARQ retransmission, the UE is configured according to HARQ maximum retransmission times, sidelink transmission power, sidelink MCS, redundancy version number, and RLC retransmission configuration. One or more of the information performs sidelink retransmission;
  • the UE performs sidelink retransmission using the preconfigured sidelink retransmission configuration information.
  • the method in this embodiment may further include:
  • the UE receives sidelink HARQ feedback or sidelink ARQ feedback sent by the peer UE;
  • the method in this embodiment may further include:
  • the UE adjusts the sidelink transmission power and/or the sidelink MCS
  • the UE may adjust the sidelink transmission power and/or the MCS of the sidelink according to the NACK frequency fed back by the UE receiving the information.
  • the method in this embodiment may further include:
  • the UE receives the lost data packet on the sidelink sent by the base station;
  • the eNB can monitor the transmission and feedback on the sidelink. If the NACK feedback is received, the eNB sends the lost data packet to the receiving through the downlink subframe of the Uu interface or the sidelink resource in the uplink subframe. Information UE.
  • the reception reliability is improved by multiple consecutive retransmissions (ie, HARQ retransmission) at the MAC layer, and the number of HARQ consecutive retransmissions is configurable. of.
  • a HARQ ACK/NACK feedback mechanism is introduced at the sidelink MAC layer to design a feedback channel.
  • the UE receiving the information feeds back an ACK or a NACK, and the UE transmitting the information triggers the HARQ retransmission after listening to the NACK. Meanwhile, the UE transmitting the information may adjust the transmission power and/or the MCS according to the NACK frequency fed back by the UE receiving the information.
  • the ARQ feedback and retransmission mechanism of the sidelink RLC layer is introduced and optimized. If there is no feedback in the HARQ, the data packet sent by the UE transmitting the information through the sidelink arrives at the RLC layer of the UE receiving the information according to the transmission timing, but in the case of packet loss, if the RLC layer of the UE receiving the information receives the non-sequence If the received data packet is lost, the data packet that is not received in order is lost, that is, the t-reordering is not required or the t-reordering value is set to 0, and the RLC status feedback report is triggered immediately, and the UE that sends the information receives the status feedback report.
  • the RLC layer of the UE receiving the information may be out of order. Therefore, the t-reordering timer of the RLC layer is set to determine data loss, and the value of the timer may be configured according to different numerology or radio bearer mapping used by the UE to configure different values, if the TTI to be used is used. If the frame length is set to t-reordering, the timer expires, and the UE receiving the information triggers the status feedback report and waits for the UE transmitting the information to perform retransmission.
  • the present embodiment provides a method for information transmission, which can be applied to a base station in a vehicle network, and it should be noted that, for the technical solution in the embodiment of the present invention, when the technical solution is When the LTE architecture is used for the description, the base station may be an eNB. When the technical solution is based on the 5G, the base station may be a 5G base station (gNB), which is not described in this embodiment of the present invention.
  • gNB 5G base station
  • the method provided in this embodiment may include:
  • the base station sends a sidelink retransmission configuration information to the UE.
  • the content of the sidelink retransmission configuration information involved in this step may be referred to the description of the retransmission configuration information for the sidelink in the first embodiment.
  • the sidelink retransmission configuration information may include at least one of the following information: sidelink retransmission mode, sidelink transmission reliability information, MAC retransmission configuration information, RLC retransmission configuration information, sidelink feedback, or transmission or retransmission resources.
  • sidelink logical channel or the parameter mapped by the bearer configures the numerology and the frame length information of the TTI.
  • the sidelink retransmission mode may be used to configure the manner in which the UE performs feedback or retransmission, so that the UE is configured according to the UE.
  • the configured mode performs feedback or retransmission.
  • the sidelink retransmission mode may include any one of the following modes: HARQ continuous retransmission, ARQ continuous retransmission, HARQ feedback and HARQ retransmission, and HARQ retransmission.
  • the sidelink transmission reliability information mentioned in the above example may be used to indicate that the sidelink retransmission mode and/or the MAC retransmission configuration information and/or the RLC retransmission configuration information can provide reliable sidelink transmission.
  • the sidelink transmission reliability information may include at least one of the following: a quantized sidelink transmission reliability level, such as a high reliability level, a medium reliability level, and a low reliability level, and a sidelink transmission packet loss rate.
  • the MAC retransmission configuration information mentioned in the foregoing example may include at least one of the following information: a number of consecutive HARQ retransmissions, a maximum number of HARQ retransmissions, a HARQ process number, a sidelink transmission power, and a sidelink.
  • Modulation and Coding Scheme (MCS) Modulation and Coding Scheme
  • the RLC retransmission configuration information mentioned in the foregoing example may include sending RLC retransmission configuration information and or receiving RLC retransmission configuration information, where sending RLC retransmission configuration information includes: ARQ continuous weight Any combination of the number of transmissions or the following: ARQ maximum number of retransmissions, RLC AM sequence number length, polling retransmission timer, polling protocol data unit, and polling byte number; and receiving RLC retransmission configuration information including: RLC AM serial number length, reordering timer t-reordering, and status prohibit timer t-statusprohibit.
  • t-reordering can be set to 0.
  • the RLC layer of the UE receiving the information receives the non-sequentially received data packet, that is, the received information, when the UE finds that there is a data packet loss, immediately triggers an ARQ feedback NACK (NACK may be an RLC status report) to request The UE transmitting the information retransmits the lost data packet;
  • the sidelink retransmission mode includes HARQ feedback, that is, if the retransmission mode is a combination of HARQ feedback and HARQ retransmission and ARQ feedback and ARQ retransmission
  • the number of HARQ maximum retransmissions and the time required for HARQ retransmission may be set t. -reordering; Alternatively, the t-reordering value may be set in units of frame length information of the sidelink logical channel or the mapped numerology or TTI.
  • a resource indication for sending sidelink HARQ feedback may be included.
  • the method in this embodiment may further include:
  • the sidelink retransmission indication information includes at least one of the following: a service/bearer reliability requirement/level, a service/bearer loss rate requirement, a service type, a priority, a delay requirement, and a sidelink retransmission requirement indication.
  • the UE prefers the sidelink retransmission configuration, the sidelink retransmission configuration that the UE can support, the sidelink resource request, and the sidelink buffer status report.
  • the method in this embodiment may further include:
  • the base station monitors the transmission and feedback on the sidelink
  • the base station configures or modifies the sidelink transmission power and/or the sidelink MCS for the UE transmitting the information, or the base station transmits the lost data packet on the sidelink to the UE receiving the information;
  • the eNB is used as an example. If the eNB monitors the NACK feedback, the eNB sends the lost data packet to the UE receiving the information through the downlink subframe in the Uu interface or the sidelink resource in the uplink subframe.
  • the base station sends appropriate sidelink retransmission configuration information to the UE, so that the UE uses the appropriate sidelink retransmission configuration, on the premise of application or service of different scenarios and different reliability requirements.
  • the UE1 transmitting the information and the UE2 receiving the information are within the eNB coverage, and V2X communication is performed through the sidelink.
  • this embodiment may include:
  • S401 UE1 and UE2 receive sidelink retransmission configuration information from a system broadcast message sent by the eNB.
  • the UE1 and the UE2 can also broadcast the maximum number of consecutive retransmissions of the sidelink HARQ and/or the number of HARQ transmissions corresponding to different reliability levels.
  • S402 The UE1 determines whether to retransmit and retransmit the number according to the importance and reliability requirements of the service.
  • the UE1 indicates in the SCI whether the data transmission is initial transmission or retransmission, whether there are still retransmissions, total number of data transmissions, current data transmission times, and data transmission resources;
  • the UE2 receives the data sent by the UE1 according to the information in the received SCI.
  • the UE1 that sends the information is in the RRC connected state. As shown in FIG. 5, the embodiment may include:
  • S501 The UE1 sends sidelink retransmission indication information to the eNB.
  • the sidelink retransmission indication information is used to assist the eNB in configuring the sidelink retransmission mode and the corresponding sidelink retransmission configuration parameter for the UE1.
  • the sidelink retransmission indication information may include the service reliability requirement or level, The service packet loss rate indicator, the sidelink retransmission requirement indication, the sidelink retransmission mode that the UE expects to obtain, and the sidelink retransmission mode that the UE can support;
  • the service reliability requirement or the service reliability level is used to indicate the reliability requirement of the service to be sent by the UE on the sidelink; the sidelink retransmission requirement indication indicates whether retransmission is needed on the sidelink; and the sidelink retransmission mode includes hybrid automatic retransmission HARQ. Continuous retransmission, automatic retransmission of ARQ continuous retransmission, HARQ feedback and HARQ retransmission, HARQ retransmission and combination of ARQ feedback and ARQ retransmission, HARQ feedback and HARQ retransmission, and combination of ARQ feedback and ARQ retransmission.
  • the eNB After receiving the sideband retransmission indication information sent by the UE1, the eNB configures sideband retransmission configuration information for the UE1.
  • the sidelink retransmission configuration information may include a sidelink retransmission mode, a sidelink transmission reliability level information, a MAC retransmission configuration information, and an RLC retransmission configuration information.
  • the sidelink transmission reliability level information is used to indicate a sidelink retransmission mode and/or
  • the retransmission configuration information can provide a sidelink transmission reliability level;
  • the MAC retransmission configuration information includes: a HARQ continuous retransmission number or a HARQ maximum retransmission number, and may also include a possible HARQ retransmission resource, a sidelink transmission power, and a sidelink MCS.
  • At least one of the RLC retransmission configuration information includes: ARQ consecutive retransmission times or any combination of the following information: ARQ maximum retransmission times, RLC AM sequence number length, polling retransmission timer, polling protocol data unit, and The number of polled bytes, the reordering timer t-reordering, and the state inhibit timer t-statusprohibit.
  • the sidelink retransmission mode is a combination of HARQ retransmission and ARQ feedback and ARQ retransmission;
  • the MAC retransmission configuration information includes the number of HARQ consecutive retransmissions;
  • the RLC retransmission configuration information includes the ARQ maximum retransmission times and the ARQ configuration.
  • S503 The UE1 receives the sideband retransmission configuration information sent by the eNB.
  • S504 The UE1 performs retransmission configuration according to the sideband retransmission configuration information sent by the eNB.
  • S505 UE1 notifies UE2 of sidechain retransmission configuration information.
  • UE1 may inform UE2 of its retransmission mode and related configuration. If there is HARQ feedback or ARQ feedback, UE2 needs to have corresponding feedback capability.
  • S506 UE2 replies with the confirmation information.
  • UE1 requests the sidelink transmission resource from the eNB and performs retransmission according to the sidelink retransmission configuration.
  • the transmitting UE1 performs HARQ continuous retransmission at the MAC layer, and the SCI indicates whether the current transmission is the initial transmission or the retransmission and the location of the data transmission resource. Since there is no HARQ feedback, the data of UE1 should arrive at the RLC layer of UE2 in order, but there may be packet loss, therefore,
  • the RLC layer of the UE2 receives the data packet that arrives out of order, and immediately triggers the status report to feed back the NACK to the UE1.
  • UE2 can consider that the data packet that was not received before is lost, that is, in this case, the reordering timer t-reordering can be set to 0 or not. Set t-reordering.
  • S508 UE1 receives a status report (status pdu) sent by UE2.
  • S509 UE1 retransmits the lost SCI and the data packet.
  • the UE1 that sends the information is in the RRC connection state with the UE2 that receives the information.
  • the embodiment may include:
  • S601 The UE1 notifies the eNB to perform V2X sideband communication when the PC5 interface has a V2X communication requirement;
  • S602 The UE2 notifies the eNB to perform V2X sideband communication when the PC5 interface has a V2X communication requirement;
  • the information sent by the UE1 or the UE2 to the eNB may carry related information of the sidelink retransmission indication.
  • the eNB knows the transmission-reception target pair information and its numerology information of the UE1 and the UE2, and when configuring the sidelink communication resource for the UE1 and the UE2, the eNB may configure the sidelink retransmission configuration information.
  • the sidelink retransmission configuration information includes one or a combination of: sidelink retransmission mode, sidelink transmission reliability information, MAC retransmission configuration information, RLC retransmission configuration information, sidelink feedback or transmission or retransmission of resources.
  • the sidelink retransmission mode is set to be a combination of the HARQ feedback and the HARQ retransmission and the ARQ feedback and the ARQ retransmission.
  • the MAC retransmission configuration information of the UE1 includes: the maximum number of retransmissions of the HARQ, the sidelink transmission power, and the sidelink. At least one of the MCS and the HARQ retransmission resources; the RLC retransmission configuration information includes: the maximum number of retransmissions of the ARQ, the length of the RLC AM sequence number, the polling retransmission timer, the polling protocol data unit, and the number of polling bytes
  • the RLC retransmission configuration information of the UE2 includes a reordering timer t-reordering and a state prohibiting timer t-statusprohibit; wherein the value of the t-reordering may be set according to the maximum number of HARQ retransmissions and the time required for HARQ retransmission, or Set according to the numerology information of the UE.
  • the sidelink feedback or transmission or retransmission of resources may include at least one of: a resource indication for transmitting sidelink HARQ feedback, a resource or resource pool for sidelink communication transmission, a semi-static resource for sidelink communication, and a sidelink communication.
  • Retransmitted resource/resource pool pairing resources for sidelink communication transmission/retransmission and sidelink HARQ feedback, pairing relationship for sidelink communication transmission/retransmission resources and for sidelink HARQ feedback resources;
  • the resource indication for transmitting the sidelink HARQ feedback includes at least one of the following: a time relationship of the sidelink HARQ transmission and feedback, a frame offset, a subframe offset, a resource mode or a bitmap, and a resource index.
  • S603 The eNB sends sidechain retransmission configuration information to the UE1.
  • S604 The eNB sends sidechain retransmission configuration information to the UE2.
  • S605 The UE1 performs sideband transmission and retransmission according to the configured sideband communication resources and retransmission configuration information.
  • the UE1 includes an initial transmission retransmission indication, a data transmission resource, and a HARQ feedback resource indication in the SCI, where the HARQ feedback resource indication is used to inform the UE2 of the HARQ feedback resource corresponding to the current transmission data, which may be an eNB.
  • the UE1 When configuring the sidelink communication transmission resource for the UE1, configure the corresponding HARQ feedback resource, that is, the sidelink communication transmission/retransmission and the pairing resource for the sidelink HARQ feedback; or the UE1 itself selects the corresponding HARQ feedback resource when selecting the transmission resource. Then, it is indicated to UE2 by SCI.
  • S606 UE2 performs feedback after receiving the SCI.
  • the UE2 may use the HARQ feedback resource indication indicated by the UE1 to receive the corresponding data, or obtain the currently received data of the UE1 according to the pairing relationship between the sidelink communication transmission/retransmission resource and the sidelink HARQ feedback resource.
  • Corresponding sidelink HARQ feedback resources; UE2 can also use the specially designed sidelink feedback channel to feed back ACK/NACK.
  • the technical solution in this embodiment performs S607: after the UE1 listens to the NACK, the lost data packet is retransmitted through the HARQ.
  • S609 UE1 retransmits the lost data packet after receiving the status report of UE2.
  • the technical solution of this embodiment includes:
  • S701 UE1 initiates a sideband service request to the eNB.
  • a sidelink service request is initiated to the eNB, and the request may include a sidelink V2X service feature or a QoS requirement (the QoS requirement may include a reliability requirement/loss rate requirement). , retransmission instructions, etc.).
  • This request can be used to request configuration sidelink bearer establishment.
  • the eNB configures a sideband bearer setup for the UE1 according to the QoS requirement, and configures corresponding sidechain retransmission configuration information for the sideband bearer.
  • the eNB may configure the sidelink retransmission configuration information according to the packet loss rate/reliability requirement and the sidelink retransmission indication information in the QoS requirement.
  • the UE1 receives the sideband bearer information and the retransmission configuration information configured by the eNB, interacts with the UE2, and establishes a sidechain bearer.
  • UE1 and UE2 request sidelink communication resources from the eNB and perform sidelink transmissions, possible feedback, and required retransmissions as configured.
  • UE1 and UE2 are configured to receive the sidelink communication resource from the eNB and the sidelink unicast communication through the PC5 interface.
  • the technical solution of this embodiment includes:
  • S801 UE1 acquires sidechain retransmission configuration information from an eNB.
  • S802 UE2 acquires sideband retransmission configuration information from an eNB.
  • the retransmission configuration information supports HARQ ACK/NACK feedback.
  • UE2 uses a sidelink feedback channel to feed back ACK/NACK, and UE1 triggers HARQ retransmission after listening to NACK. Since the resource used by the sidelink is a cellular uplink spectrum resource or a dedicated spectrum resource allocated by the eNB, the eNB can know the sidelink transmission resource information and the reception resource information. therefore,
  • S803 The eNB monitors transmission and feedback on the sidechain.
  • the eNB If the eNB is listening to the NACK feedback on the sidelink, the eNB performs the step S804: the eNB retransmits the BC (Transport Block) corresponding to the NACK feedback, and can transmit the downlink subframe to the UE2 through the Uu interface. And instruct UE2 that the data packet is a data packet on the sidelink. At this time, after receiving the data packet, UE2 transfers it to the sidelink receiving buffer according to the instruction and delivers it to the upper layer. In an embodiment, the eNB sends the lost data packet on the sidelink to the UE2 through the Uu interface by using the sidelink resource of the uplink subframe.
  • BC Transport Block
  • the eNB may set the sidelink transmission configuration of the UE1 in addition to the retransmission to the UE2.
  • the eNB adjusts the sideband transmit power and/or the sidechain MCS of the UE1.
  • the technical solution of this embodiment includes:
  • S901 UE1 and UE2 obtain sideband communication resources and sidechain retransmission configuration information from the eNB.
  • the sidelink retransmission mode is a combination of HARQ feedback and HARQ retransmission and ARQ feedback and ARQ retransmission
  • the MAC retransmission configuration information includes: at least a maximum number of HARQ retransmissions, a transmission power, an MCS, and a HARQ retransmission resource.
  • RLC retransmission configuration information includes: ARQ maximum retransmission times, RLC AM sequence number length, polling retransmission timer, polling protocol data unit, polling byte number, reordering timer t-reordering, and status The timer t-statusprohibit is disabled.
  • S902 UE1 and UE2 perform sideband transmission and possible retransmission on the PC5 interface according to the obtained configuration information.
  • the embodiment further includes step S903: UE1 adjusts the transmit power on the sidelink and/or Or adjust the coding mode MCS;
  • the UE1 may adjust the transmit power on the sidelink and/or adjust the coding mode MCS according to the received HARQ NACK feedback frequency or ARQ NACK feedback frequency sent by the UE2.
  • UE1 can perform sidelink transmission according to the transmission power and/or MCS on the adjusted sidelink.
  • the UE 100 is applied to the vehicle networking architecture provided by the embodiment of the present invention, and may include: an obtaining module 1001 and an executing module 1002;
  • the obtaining module 1001 is configured to acquire sidechain sidelink retransmission configuration information.
  • the executing module 1002 is configured to perform sidelink feedback or sidelink retransmission according to the sidelink retransmission configuration information.
  • the acquiring module 1001 is configured to receive the sidelink retransmission configuration information sent by the base station; or
  • the configuration is configured to obtain the sidelink retransmission configuration information by using pre-configuration information
  • the content of the sidelink retransmission configuration information mentioned above may be referred to the description of the retransmission configuration information for the sidelink in the first embodiment, which is not described in this embodiment.
  • the acquiring module 1001 is configured to receive, by using a system broadcast message, the sidelink retransmission configuration information sent by the base station;
  • the obtaining module 1001 is configured to obtain pre-configuration information including the sidelink retransmission configuration information from a proximity service function entity ProSe Function or a V2X control function entity V2X control function.
  • the acquiring module 1001 is configured to receive, by using the peer UE, the PC5 signaling that carries the sidelink retransmission configuration information;
  • the UE 100 further includes: a first sending module 1003, configured to send sidelink retransmission indication information to the base station; wherein the sidelink retransmission indication information includes any one or combination of the following: / Bearer reliability requirement/level, service/bearer packet loss rate requirement, service type, priority, delay requirement, sidelink retransmission requirement indication, UE 100-oriented sidelink retransmission configuration, sidelink retransmission configuration supported by UE 100, Sidelink resource request and sidelink buffer status report.
  • the UE 100 further includes a first receiving module 1004 configured to receive a sidelink transmission power and/or a sidelink modulation coding pattern MCS configured by the base station; wherein, the sending of the UE 100
  • the power and/or MCS is configured by the base station by listening to the transmission and feedback on the sidelink and according to the NACK frequency fed back by the receiving UE 100.
  • the executing module 1002 is configured to perform sidelink HARQ feedback by using the received resource for sending sidelink HARQ feedback when the UE 100 is configured as sidelink HARQ feedback; or
  • the executing module 1002 is configured to perform sidelink ARQ feedback according to the received RLC retransmission configuration information when the UE 100 is configured as sidelink ARQ feedback.
  • the executing module 1002 is configured to perform sidelink retransmission according to the number of consecutive HARQ retransmissions when the UE 100 selects or is configured as a HARQ continuous retransmission; or
  • the execution module 1002 is configured to perform sidelink retransmission according to the number of consecutive ARQ retransmissions when the UE 100 selects or is configured as an ARQ continuous retransmission; or
  • the executing module 1002 is configured to: according to one of HARQ maximum retransmission times, sidelink transmission power, sidelink MCS, and redundancy version number, when the UE 100 selects or is configured as HARQ feedback and HARQ retransmission, or Multiple execution sidelink retransmissions; or,
  • the executing module 1002 is configured to perform sidelink retransmission according to the HARQ continuous retransmission times and the RLC retransmission configuration information when the UE 100 selects or is configured as a HARQ retransmission and a combination of the ARQ feedback and the ARQ retransmission; or ,
  • the executing module 1002 is configured to: when the UE 100 selects or is configured as a combination of HARQ feedback and HARQ retransmission and ARQ feedback and ARQ retransmission, according to the HARQ maximum retransmission times, sidelink transmission power, sidelink MCS, One or more of the redundancy version number and the RLC retransmission configuration information to perform sidelink retransmission; or,
  • the executing module 1002 is configured to perform sidelink retransmission using the preconfigured sidelink retransmission configuration information
  • the executing module 1002 is configured to perform sidelink retransmission of each sidelink logical channel or bearer according to different sidelink logical channels or sidelink retransmission configuration information mapped by the bearer.
  • the UE 100 further includes an adjustment module 1005 configured to adjust a sidelink transmission power and/or an MCS of a sidelink.
  • the UE 100 further includes: a second receiving module 1006, configured to receive sidelink HARQ feedback or sidelink ARQ feedback sent by the peer UE.
  • a second receiving module 1006 configured to receive sidelink HARQ feedback or sidelink ARQ feedback sent by the peer UE.
  • the UE 100 further includes: a third receiving module 1007 configured to receive a lost data packet on the sidelink sent by the base station.
  • each functional module in this embodiment may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software function module.
  • the integrated unit can be stored in a non-transitory computer readable storage medium if it is implemented in the form of a software function module and is not sold or used as a stand-alone product.
  • a computer A device which may be a personal computer, a server, or a network device, etc.
  • a processor processor
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes.
  • the computer program instructions corresponding to the method for information transmission in this embodiment may be stored on a storage medium such as an optical disk, a hard disk, a USB disk, or the like, and a computer program instruction corresponding to an information transmission method in the storage medium is received by an electronic device.
  • a storage medium such as an optical disk, a hard disk, a USB disk, or the like
  • a computer program instruction corresponding to an information transmission method in the storage medium is received by an electronic device.
  • the device reads or is executed, it includes the following steps:
  • the step of storing the sidechain sidelink retransmission configuration information by the UE may include:
  • the method stored in the storage medium may further include: before acquiring the sidechain sidelink retransmission configuration information, the method may further include:
  • the method may further include: before or after the sidelink retransmission configuration information sent by the receiving base station, the method further includes:
  • the storing step in the storage medium: performing sidelink feedback according to the sidelink retransmission configuration information may include at least one of the following:
  • the UE When the UE is configured as sidelink HARQ feedback, performing sidelink HARQ feedback using the received resource for transmitting sidelink HARQ feedback;
  • the sidelink ARQ feedback is performed according to the received RLC retransmission configuration information; it can be understood that the form of the sidelink ARQ feedback may be a sidelink RLC status report.
  • the storing step in the storage medium: performing sidelink retransmission according to the sidelink retransmission configuration information may include at least one of the following:
  • sidelink retransmission is performed according to the number of consecutive HARQ retransmissions
  • sidelink retransmission is performed according to the number of consecutive ARQ retransmissions
  • sidelink retransmission is performed according to one or more of HARQ maximum retransmission times, sidelink transmission power, sidelink MCS, and redundancy version number;
  • the UE selects or is configured as a combination of HARQ retransmission and ARQ feedback and ARQ retransmission, performing sidelink retransmission according to the number of HARQ consecutive retransmissions and the RLC retransmission configuration information;
  • the UE selects or is configured as a combination of HARQ feedback and HARQ retransmission and ARQ feedback and ARQ retransmission, according to the HARQ maximum retransmission times, sidelink transmission power, sidelink MCS, redundancy version number, and RLC retransmission configuration information.
  • the HARQ maximum retransmission times sidelink transmission power, sidelink MCS, redundancy version number, and RLC retransmission configuration information.
  • the sidelink retransmission of each sidelink logical channel or bearer is performed according to the sidelink retransmission configuration information mapped by different sidelink logical channels or bearers.
  • the step of storing in the storage medium: before or after performing sidelink retransmission according to the sidelink retransmission configuration information, the method may further include:
  • the step of storing in the storage medium: before or after performing sidelink retransmission according to the sidelink retransmission configuration information, the method may further include:
  • the UE 100 provides the UE 100 with the appropriate sidelink retransmission configuration information to ensure the reliability, so as to meet the high reliability of the vehicle networking communication requirement under the premise of different scenarios and applications or services with different reliability requirements.
  • FIG. 12 shows a hardware structure of a UE 100 according to an embodiment of the present invention, which may include: a first communication interface 1201, a first memory 1202, a first processor 1203, and a first bus 1204; wherein
  • the first bus 1204 is configured to connect the first communication interface 1201, the first processor 1203, and the first memory 1202, and mutual communication between the devices;
  • the first communication interface 1201 is configured to perform data transmission with an external network element
  • the first memory 1202 is configured to store instructions and data
  • the first processor 1203 executes the instruction to: acquire sidechain sidelink retransmission configuration information; and perform sidelink feedback or sidelink retransmission according to the sidelink retransmission configuration information.
  • the first memory 1202 may be a volatile memory, such as a random access memory (RAM), or a non-volatile memory, such as only Read memory (ROM, Read-Only Memory), flash memory, hard disk (HDD, Hard Disk Drive) or solid state drive (SSD, Solid-State Drive); or a combination of the above types of memory, and
  • RAM random access memory
  • non-volatile memory such as only Read memory (ROM, Read-Only Memory), flash memory, hard disk (HDD, Hard Disk Drive) or solid state drive (SSD, Solid-State Drive); or a combination of the above types of memory
  • a processor 1203 provides instructions and data.
  • the first processor 1203 may be an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), or a programmable logic device. At least one of (PLD, Programmable Logic Device), Field Programmable Gate Array (FPGA), Central Processing Unit (CPU), controller, microcontroller, and microprocessor. It is to be understood that, for different devices, the electronic device for implementing the functions of the first processor may be other, which is not limited in the embodiment of the present invention.
  • ASIC Application Specific Integrated Circuit
  • DSP Digital Signal Processor
  • DSPD Digital Signal Processing Device
  • programmable logic device At least one of (PLD, Programmable Logic Device), Field Programmable Gate Array (FPGA), Central Processing Unit (CPU), controller, microcontroller, and microprocessor.
  • PLD Programmable Logic Device
  • FPGA Field Programmable Gate Array
  • CPU Central Processing Unit
  • controller microcontroller
  • microprocessor microprocessor
  • the first processor 1203 can be configured to:
  • the first processor 1203 is further configured to send sidelink retransmission indication information to the base station.
  • the first processor 1203 is further configured to receive a sidelink transmit power and/or a sidelink modulation coding pattern MCS configured by the base station; wherein the transmit power and/or MCS of the UE is monitored by the base station by listening to the sidelink Send and feedback, and configure according to the NACK frequency of receiving UE feedback.
  • the first processor 1203 can be configured to:
  • the received sidelink HARQ feedback is performed using the received resource for transmitting sidelink HARQ feedback;
  • the sidelink ARQ feedback is performed according to the received RLC retransmission configuration information; it can be understood that the form of the sidelink ARQ feedback may be a sidelink RLC status report.
  • the first processor 1203 can be configured to:
  • sidelink retransmission is performed according to the number of consecutive HARQ retransmissions
  • E When the UE selects or is configured to perform ARQ continuous retransmission, E performs sidelink retransmission according to the number of consecutive ARQ retransmissions; or,
  • sidelink retransmission is performed according to one or more of HARQ maximum retransmission times, sidelink transmission power, sidelink MCS, and redundancy version number; or
  • the sidelink retransmission is performed according to the HARQ continuous retransmission times and the RLC retransmission configuration information;
  • the UE selects or is configured as a combination of HARQ feedback and HARQ retransmission and ARQ feedback and ARQ retransmission, according to the HARQ maximum retransmission times, sidelink transmission power, sidelink MCS and redundancy version number, and RLC retransmission configuration information.
  • the implementation of sidelink retransmission or,
  • the sidelink retransmission of each sidelink logical channel or bearer is performed according to the sidelink retransmission configuration information mapped by different sidelink logical channels or bearers.
  • the first processor 1203 is further configured to receive sidelink HARQ feedback or sidelink ARQ feedback sent by the peer UE.
  • the first processor 1203 is further configured to adjust a sidelink transmission power and/or an MCS of a sidelink.
  • the first processor 1203 is further configured to receive a lost data packet on a sidelink sent by the base station.
  • a base station 130 which includes a second sending module 1301 configured to send sidelink retransmission configuration information to the UE.
  • the base station 130 further includes: a fourth receiving module 1302, configured to receive sidelink retransmission indication information sent by the UE;
  • the sidelink retransmission indication information includes at least one of the following: service/bearer reliability requirement/level, service/bearer packet loss rate requirement, service type, priority, delay requirement, sidelink retransmission requirement indication, UE preference
  • service/bearer reliability requirement/level service/bearer packet loss rate requirement
  • service type service type
  • priority priority
  • delay requirement sidelink retransmission requirement indication
  • UE preference The sidelink retransmission configuration, the sidelink retransmission configuration supported by the UE, the sidelink resource request, and the sidelink buffer status report.
  • the base station 130 may further include: a listening module 1303, a configuration module 1304, and a third sending module 1305, where the listening module 1303 is configured to monitor transmission and feedback on the sidelink and trigger The configuration module 1304 or the third sending module 1305;
  • the configuration module 1304 is configured to configure or modify a sidelink sending power and/or a sidelink MCS for the UE that sends the information;
  • the third sending module 1305 is configured to send the lost data packet on the sidelink to the UE receiving the information.
  • the listening module 1303 is configured to monitor the sending and feedback on the sidelink, and trigger the third sending module 1305 when the NACK feedback is monitored;
  • the third sending module 1305 is configured to send the lost data packet to the UE receiving the information through the downlink subframe in the Uu interface or the sidelink resource in the uplink subframe.
  • each functional module in this embodiment may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software function module.
  • the integrated unit may be stored in a computer readable storage medium if it is implemented in the form of a software function module and is not sold or used as a stand-alone product.
  • the technical solution of the embodiment is essentially Said that the part contributing to the prior art or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium, comprising a plurality of instructions for making a computer device (may It is a personal computer, a server, or a network device, etc. or a processor that performs all or part of the steps of the method described in this embodiment.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes.
  • the computer program instructions corresponding to the method for information transmission in this embodiment may be stored on a storage medium such as an optical disk, a hard disk, a USB disk, or the like, and a computer program instruction corresponding to an information transmission method in the storage medium is received by an electronic device.
  • a storage medium such as an optical disk, a hard disk, a USB disk, or the like
  • a computer program instruction corresponding to an information transmission method in the storage medium is received by an electronic device.
  • the device reads or is executed, it includes the following steps:
  • the content of the sidelink retransmission configuration information involved in this step may be referred to the description of the retransmission configuration information for the sidelink in the first embodiment.
  • the storing step of the storing medium includes: before transmitting the sidelink retransmission configuration information to the UE, the method further includes:
  • the sidelink retransmission indication information includes at least one of the following: a service/bearer reliability requirement/level, a service/bearer loss rate requirement, a service type, a priority, a delay requirement, and a sidelink retransmission requirement indication.
  • the UE prefers the sidelink retransmission configuration, the sidelink retransmission configuration that the UE can support, the sidelink resource request, and the sidelink buffer status report.
  • the method further includes:
  • the UE transmitting the information is configured or modified to modify the sidelink transmission power and/or the MCS of the sidelink, or to transmit the lost data packet on the sidelink to the UE receiving the information.
  • the storing in the storage medium and the step of: the base station transmitting the lost data packet on the sidelink to the UE receiving the information including:
  • the lost data packet is sent to the UE receiving the information through the downlink subframe in the Uu interface or the sidelink resource in the uplink subframe.
  • the base station 130 sends the appropriate sidelink retransmission configuration information to the UE, so that the UE retransmits the configuration information by using the appropriate sidelink, on the premise of the application or service of different scenarios and different reliability requirements. To ensure reliability, to meet the high reliability of the Internet of Vehicles communication needs.
  • a hardware structure of a base station 130 which may include: a second communication interface 1501, a second memory 1502, and a second processor 1503. And a second bus 1504; wherein
  • the second bus 1504 is configured to connect the second communication interface 1501, the second processor 1503, and the second memory 1502 and mutual communication between the devices;
  • the second communication interface 1501 is configured to perform data transmission with an external network element
  • the second memory 1502 is configured to store instructions and data
  • the second processor 1503 executes the instruction to: send a sidelink retransmission configuration information to the UE.
  • the second memory 1502 may be a volatile memory, such as a random access memory (RAM), or a non-volatile memory, such as only Read memory (ROM, Read-Only Memory), flash memory, hard disk (HDD, Hard Disk Drive) or solid state drive (SSD, Solid-State Drive); or a combination of the above types of memory, and
  • the second processor 1503 provides instructions and data.
  • the second processor 1503 may be an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), or a programmable logic device. At least one of (PLD, Programmable Logic Device), Field Programmable Gate Array (FPGA), Central Processing Unit (CPU), controller, microcontroller, and microprocessor. It is to be understood that, for different devices, the electronic device for implementing the functions of the second processor may be other, which is not limited in the embodiment of the present invention.
  • ASIC Application Specific Integrated Circuit
  • DSP Digital Signal Processor
  • DSPD Digital Signal Processing Device
  • programmable logic device At least one of (PLD, Programmable Logic Device), Field Programmable Gate Array (FPGA), Central Processing Unit (CPU), controller, microcontroller, and microprocessor. It is to be understood that, for different devices, the electronic device for implementing the functions of the second processor may be other, which is not limited in the embodiment of the present invention.
  • the second processor 1503 is further configured to receive sidelink retransmission indication information sent by the UE;
  • the sidelink retransmission indication information includes any one or combination of the following: service/bearer reliability requirement/level, service/bearer packet loss rate requirement, service type, priority, delay requirement, sidelink retransmission The demand indication, the sidelink retransmission configuration that the UE prefers, the sidelink retransmission configuration that the UE can support, the sidelink resource request, and the sidelink buffer status report.
  • the second processor 1503 is further configured to monitor transmission and feedback on the sidelink;
  • the UE transmitting the information is configured or modified to modify the sidelink transmission power and/or the MCS of the sidelink, or to transmit the lost data packet on the sidelink to the UE receiving the information.
  • the second processor 1503 is further configured to: when listening to the NACK feedback, send the lost data packet to the UE receiving the information through the downlink subframe in the Uu interface or the sidelink resource in the uplink subframe.
  • the system 160 includes a user equipment UE100 and a base station 130 in a car network architecture, where ,
  • the UE 100 is configured to acquire sidechain sidelink retransmission configuration information.
  • the base station 130 is configured to send sidelink retransmission configuration information to the UE 100.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • the UE in the car network architecture acquires sidelink retransmission configuration information; the UE performs sidelink feedback or sidelink retransmission according to the sidelink retransmission configuration information.
  • the appropriate sidelink retransmission configuration information is used to ensure reliability, thereby meeting the high reliability of the vehicle networking communication requirement.

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Abstract

本发明公开了一种信息传输的方法、装置、系统及存储介质；所述方法应用于处于车联网架构中的用户设备(UE)，所述方法包括：UE获取旁链(sidelink)重传配置信息；UE根据sidelink重传配置信息执行sidelink反馈或sidelink重传。

Description

信息传输的方法、装置、系统及存储介质
相关申请的交叉引用
本申请基于申请号为201710178960.0、申请日为2017年03月23日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明涉及无线通信技术，尤其涉及一种信息传输的方法、装置、系统及存储介质。
背景技术
车联网通信(V2X，Vehicle-to-Everything Communications)是未来智能交通运输系统的关键技术。它通过装载在车辆上的传感器、车载终端及电子标签提供车辆信息，采用各种通信技术实现车与车通信(V2V，Vehicle-to-Vehicle Communication)、车与人通信(V2P，Vehicle-to-Pedestrian Communications)、车与网络基础设施通信(V2I，Vehicle-to-Infrastructure Communications)以及车与网络通信(V2N，Vehicle-to-Network Communications)，从而可以获得实时路况、道路信息、行人信息等一系列交通信息，进而提高驾驶安全性，减少拥堵，提高交通效率等。
目前，第三代合作伙伴计划(3GPP，3rd Generation Partnership Project)提出了基于长期演进(LTE，Long Term Evolution)的V2X。在基于LTE的V2X中，车联网信息主要通过广播和组播的方式进行传输，例如，基于多播/组播单频网络(MBSFN，Multimedia Broadcast multicast service Single Frequency Network)以及单小区点对多点(SC-PTM，Single Cell-Point To Multi-point)的广播机制。此外，车辆中的用户设备(UE，User Equipment) 之间的直接发现或通信的机制可以通过PC5接口进行广播传输来实现。
3GPP R14(Release 14)版本的协议中规定：基于LTE的V2X的主要性能需求是延时最低20ms、可靠性达到95％以上；而增强的V2X(eV2X，enhanced V2X)通信相比上述基于LTE的V2X则提出了更高的性能需求，以支持车辆组队、远程驾驶、传感器应用等车联网应用。eV2X的性能需求包括可靠性需要达到99％～99.999％，延迟需求需要在3～10ms。但是目前对于通过PC5接口所进行的V2X的通信技术，尚不能满足eV2X场景如此高的可靠性需求。
发明内容
有鉴于此，本发明实施例期望提供一种信息传输的方法、装置、系统及存储介质，能够达到高可靠性的车联网通信需求，从而提高车联网通信服务的可靠性和安全性。
本发明实施例的技术方案是这样实现的：
第一方面，本发明实施例提供了一种信息传输的方法，所述方法应用于处于车联网架构中的UE，所述方法包括：
UE获取旁链sidelink重传配置信息；
所述UE根据所述sidelink重传配置信息执行sidelink反馈或sidelink重传。
在上述方案中，所述sidelink重传配置信息包括以下信息中的至少一项：sidelink重传方式、sidelink传输可靠性信息、介质访问控制(MAC，Media Access Contro)重传配置信息、无线链路控制(RLC，Radio Link Control)重传配置信息、sidelink反馈或传输或重传资源、sidelink逻辑信道或承载所映射的参数配置numerology或sidelink逻辑信道或承载所映射的传输时间间隔(TTI，Transmission Time Interval)的帧长信息。
在上述方案中，所述sidelink重传方式包括以下方式中的任意一个：混 合自动重传请求(HARQ，Hybrid Automatic Repeat reQuest)连续重传、自动重传请求(ARQ，Automatic Repeat reQuest)连续重传、HARQ反馈与HARQ重传、HARQ重传以及ARQ反馈与ARQ重传的结合、HARQ反馈与HARQ重传以及ARQ反馈与ARQ重传的结合。
在上述方案中，所述MAC重传配置信息，包括以下信息中的至少一个：HARQ连续重传次数、HARQ最大重传次数、HARQ进程号、sidelink发送功率、sidelink的调制和编码样式(MCS，Modulation and Coding Scheme)、以及冗余版本号。
在上述方案中，所述RLC重传配置信息，包括：发送RLC重传配置信息和或接收RLC重传配置信息；其中，所述发送RLC重传配置信息包括：ARQ连续重传次数或以下信息的任意组合：ARQ最大重传次数、RLC AM(Acknowledged Mode)确认模式序列号长度、轮询重传定时器、轮询协议数据单元和轮询字节数；所述接收RLC重传配置信息包括：RLC AM序列号长度、重排序定时器和状态禁止定时器。
在上述方案中，当所述sidelink重传方式不包含HARQ反馈时，所述重排序定时器设置为零，或者，不配置所述重排序定时器；
当所述sidelink重传方式包含HARQ反馈时，根据HARQ最大重传次数及HARQ重传所需时间设置重排序定时器，或者，根据所述sidelink逻辑信道或承载所映射的numerology或TTI帧长信息中的至少一项来设置所述重排序定时器的值。
在上述方案中，所述sidelink反馈或传输或重传资源，包括以下至少一项：用于发送sidelink HARQ反馈的资源指示、用于sidelink通信发送的资源或资源池、用于sidelink通信发送的半静态资源、用于sidelink通信重传的资源/资源池、用于sidelink通信发送/重传与用于sidelink HARQ反馈的结对资源、用于sidelink通信发送/重传资源与用于sidelink HARQ反馈资源 的结对关系；其中，用于发送sidelink HARQ反馈的资源指示包括以下至少之一：sidelink HARQ传输与反馈的时间关系、帧偏移、子帧偏移、资源模式或资源位图、以及资源索引。
在上述方案中，所述UE获取旁链sidelink重传配置信息，包括：
所述UE接收基站发送的所述sidelink重传配置信息；或，
所述UE通过预配置信息获取所述sidelink重传配置信息；或，
所述UE接收对端UE发送的所述sidelink重传配置信息。
在上述方案中，所述UE接收基站发送的所述sidelink重传配置信息，包括：
所述UE从系统广播消息中接收所述基站发送的所述sidelink重传配置信息；
或，所述UE从RRC专有信令中接收所述sidelink重传配置信息。
在上述方案中，所述UE通过预配置信息获取所述sidelink重传配置信息，包括：
所述UE从临近服务功能实体ProSe Function或V2X控制功能实体V2X control function获得包含所述sidelink重传配置信息的预配置信息。
在上述方案中，所述UE接收对端UE发送的所述sidelink重传配置信息，包括：
所述UE接收由所述对端UE发送的且承载有所述sidelink重传配置信息的PC5信令；和/或，
所述UE接收由所述对端UE发送的且承载有所述sidelink反馈资源的sidelink控制信息SCI。
在上述方案中，所述UE获取旁链sidelink重传配置信息之前，所述方法包括：
所述UE发送sidelink重传指示信息给基站；其中，所述sidelink重传 指示信息包括以下至少之一：业务/承载可靠性需求/等级，业务/承载丢包率要求，业务类型，优先级，延迟需求，sidelink重传需求指示，UE倾向的sidelink重传配置，UE能够支持的sidelink重传配置，sidelink资源请求和sidelink缓冲区状态上报。
在上述方案中，在UE接收基站发送的sidelink重传配置信息之前或之后，所述方法还包括：
所述UE接收所述基站配置的sidelink发送功率和/或sidelink调制编码样式MCS；其中，所述UE的发送功率和/或MCS由基站通过监听sidelink上的发送及反馈，并根据接收UE反馈的NACK频次进行配置。
在上述方案中，所述UE根据所述sidelink重传配置信息执行sidelink反馈，包括以下至少一项：
当所述UE被配置为sidelink HARQ反馈时，所述UE使用接收到的用于发送sidelink HARQ反馈的资源执行sidelink HARQ反馈；或者，
当所述UE被配置为sidelink ARQ反馈时，所述UE根据接收到的RLC重传配置信息执行sidelink ARQ反馈。
在上述方案中，所述UE根据所述sidelink重传配置信息执行sidelink重传，包括以下至少一项：
当所述UE选择或被配置为HARQ连续重传时，所述UE根据HARQ连续重传次数执行sidelink重传；
当所述UE选择或被配置为ARQ连续重传时，所述UE根据ARQ连续重传次数执行sidelink重传；
当所述UE选择或被配置为HARQ反馈与HARQ重传时，所述UE根据HARQ最大重传次数、sidelink发送功率、sidelink的MCS和冗余版本号中的一项或多项执行sidelink重传；
当所述UE选择或被配置为HARQ重传以及ARQ反馈与ARQ重传的 结合时，所述UE根据HARQ连续重传次数及RLC重传配置信息执行sidelink重传；
当所述UE选择或被配置为HARQ反馈与HARQ重传以及ARQ反馈与ARQ重传的结合时，所述UE根据HARQ最大重传次数、sidelink发送功率、sidelink的MCS和冗余版本号及RLC重传配置信息中的一项或多项执行sidelink重传；
所述UE使用预配置的sidelink重传配置信息执行sidelink重传。
在上述方案中，在所述UE根据所述sidelink重传配置信息执行sidelink重传之前或之后，所述方法还包括：
所述UE调整sidelink发送功率和/或sidelink的MCS。
在上述方案中，在所述UE根据sidelink重传配置信息执行sidelink重传之前，所述方法还包括：
所述UE接收对端UE发送的sidelink HARQ反馈或sidelink ARQ反馈。
在上述方案中，在所述UE根据sidelink重传配置信息执行sidelink重传之前或之后，所述方法还包括：
所述UE接收所述基站发送的sidelink上丢失的数据包。
第二方面，本发明实施例提供了一种信息传输的方法，所述方法应用于车联网架构中的基站，所述方法包括：
所述基站发送sidelink重传配置信息给UE。
在上述方案中，所述基站发送sidelink重传配置信息给UE之前，所述方法还包括：
所述基站接收所述UE发送的sidelink重传指示信息；
其中，所述sidelink重传指示信息包括以下至少之一：业务/承载可靠性需求/等级，业务/承载丢包率要求，业务类型，优先级，延迟需求，sidelink重传需求指示，UE倾向的sidelink重传配置，UE能够支持的sidelink重传 配置，sidelink资源请求和sidelink缓冲区状态上报。
在上述方案中，所述基站发送sidelink重传配置信息给UE之后，所述方法还包括：
所述基站监听sidelink上的发送及反馈；
所述基站为发送信息的UE配置或修改sidelink发送功率和/或sidelink的MCS，或，所述基站发送sidelink上丢失的数据包给接收信息的UE。
在上述方案中，所述基站发送sidelink上丢失的数据包给接收信息的UE，包括：
所述基站监听sidelink上的发送及反馈；
当监听到NACK反馈时，所述基站通过Uu接口的下行子帧或上行子帧中的sidelink资源发送丢失的数据包给接收信息的UE。
第三方面，本发明实施例提供了一种UE，所述UE包括：获取模块和执行模块；其中，
所述获取模块，配置为获取旁链sidelink重传配置信息；
所述执行模块，配置为根据所述sidelink重传配置信息执行sidelink反馈或sidelink重传。
第四方面，本发明实施例提供了一种基站，所述基站包括：第二发送模块，配置为发送sidelink重传配置信息给UE。
第五方面，本发明实施例提供了一种存储计算机程序指令的非瞬时性计算机可读存储介质，所述计算机程序指令被配置成由电子设备执行，所述计算机程序指令包括用于以下的指令：
获取旁链sidelink重传配置信息；
根据所述sidelink重传配置信息执行sidelink反馈或sidelink重传。
第六方面，本发明实施例提供了一种UE，包括：第一通信接口、第一存储器、第一处理器和第一总线；其中，
所述第一总线用于连接所述第一通信接口、所述第一处理器和所述第一存储器以及这些器件之间的相互通信；
所述第一通信接口，配置为与外部网元进行数据传输；
所述第一存储器，配置为存储指令和数据；
所述第一处理器，配置为执行所述指令时实现：获取sidelink重传配置信息；以及，根据所述sidelink重传配置信息执行sidelink反馈或sidelink重传。
第七方面，本发明实施例提供了一种存储计算机程序指令的非瞬时性计算机可读存储介质，所述计算机程序指令被配置成由电子设备执行，所述计算机程序指令包括用于以下的指令：
发送sidelink重传配置信息给UE。
第八方面，本发明实施例提供了一种基站，所述基站包括：第二通信接口、第二存储器、第二处理器和第二总线；其中，
所述第二总线用于连接所述第二通信接口、所述第二处理器和所述第二存储器以及这些器件之间的相互通信；
所述第二通信接口，配置为与外部网元进行数据传输；
所述第二存储器，配置为存储指令和数据；
所述第二处理器，配置为执行所述指令时实现：发送sidelink重传配置信息给UE。
第九方面，本发明实施例提供了一种信息传输的系统，所述系统包括：车联网架构中的用户设备UE和基站，其中，
所述UE，配置为获取旁链sidelink重传配置信息；
以及，配置为根据所述sidelink重传配置信息执行sidelink反馈或sidelink重传；
所述基站，配置为发送sidelink重传配置信息给所述UE。
本发明实施例提供的信息传输的方法、装置、系统及存储介质，在不同场景、不同可靠性需求的应用或业务的前提下，使用合适的sidelink重传配置信息来保证可靠性，从而满足高可靠性的车联网通信需求。
附图说明
图1为本发明实施例提供的一种车联网架构示意图；
图2为本发明实施例提供的一种信息传输的方法流程示意图；
图3为本发明实施例提供的另一种信息传输的方法流程示意图；
图4为本发明实施例提供的一种信息传输的方法实施流程图一；
图5为本发明实施例提供的一种信息传输的方法实施流程图二；
图6为本发明实施例提供的一种信息传输的方法实施流程图三；
图7为本发明实施例提供的一种信息传输的方法实施流程图四；
图8为本发明实施例提供的一种信息传输的方法实施流程图五；
图9为本发明实施例提供的一种信息传输的方法实施流程图六；
图10为本发明实施例提供的一种UE的结构示意图；
图11为本发明实施例提供的另一种UE的结构示意图；
图12为本发明实施例提供的一种UE的硬件结构示意图；
图13为本发明实施例提供的一种基站的结构示意图；
图14为本发明实施例提供的另一种基站的结构示意图；
图15为本发明实施例提供的一种基站的硬件结构示意图；
图16为本发明实施例提供的一种信息传输的系统结构示意图。
具体实施方式
以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的实施例仅仅用以解释本发明，并不用于限定本发明。
对于车联网通信业务来说，车联网通信业务通常可以包括：V2V业务、 V2I业务、V2N业务和V2P业务。如图1所示的车辆网架构：
V2P业务是指车辆UE与行人手持UE之间通过V2P应用进行通信的业务。
V2N业务是指UE利用V2N应用通过LTE网络实体进行相互通信的业务。
V2I业务是指UE和路边单元(RSU，Road Side Unit)通过V2I应用进行交互的业务；需要说明的是，RSU是支持V2I业务的实体可以通过基站(例如演进型基站eNB)或者静止的UE实现。如果RSU是通过基站实现的，即称为eNB type RSU，如图1中标识的I，此时的V2I业务如图1中标识为V2I的箭头所示；如果RSU是通过UE实现的，即称为UE type RSU，如图1中标识的I*，此时的V2I业务如图1中标识为V2I*的箭头所示。
V2V业务是指车辆UE之间通过V2V应用进行通信的业务。V2V包括车辆UE之间直接对V2V应用信息进行通信，或者在V2V直接通信范围具有限制的情况下，车辆UE之间通过支持V2X业务的基础设施(例如RSU，应用服务器等)对V2V应用信息进行通信。
而对于传输可靠性而言，在LTE中包括二级重传处理机制，即MAC，层的HARQ机制以及RLC层的ARQ机制，通常ARQ机制只针对确认模式(AM，Acknowledged Mode)。
针对上述二级重传处理机制，需要说明的是，对于丢失或出错的数据重传主要是由MAC层的HARQ机制处理，并由RLC的重传功能进行补充。MAC层的HARQ机制能够提供快速重传，RLC层的ARQ机制能够提供可靠的数据传输，因此，二者结合可以实现较小的往返时间、适度的反馈开销以及可靠传输的要求。
对于旁链/边链sidelink通信，在3GPP的R12或R13版本关于设备到设备(D2D，Device-to-Device)的协议中，sidelink传输在MAC层，并且 HARQ机制支持4次重传，不支持反馈；在3GPP的R14版本关于V2V的协议中，每个传输块的发送次数为1次或2次，也就是每个传输块最多只能重传1次；传输次数可以由eNB配置或由UE自身确定。因此，当前sidelink传输无法满足eV2X的高可靠性需求。
本申请以图1所示的车联网架构为例，提出以下实施例来提高车联网通信服务的可靠性和安全性，可以理解地，图1所示的网络架构仅用于对实施例进行说明，并非对实施例的限定。
参见图2，其示出了本发明实施例提供的一种信息传输的方法，该方法可以应用于车联网中的UE，该方法可以包括：
S201：UE获取旁链(sidelink)重传配置信息；
S202：UE根据所述旁链重传配置信息执行旁链反馈或旁链重传。
需要说明的是，在图2所示的技术方案中所涉及到的UE，按照参与通信的角色划分，可以包括但不限于发送信息的UE，接收信息的UE以及相对于本地的对端UE；而按照车联网架构中所处的角色划分，可以包括但不限于设备到设备(D2D，Device-to-Device)的UE，车辆UE，行人UE以及UE类型的RSU。
示例性地，在S201中，sidelink重传配置信息可以包括以下信息中的至少一项：sidelink重传方式、sidelink传输可靠性信息、sidelink逻辑信道或承载标识、MAC重传配置信息、RLC重传配置信息、sidelink反馈或传输或重传资源、sidelink逻辑信道或承载所映射的参数配置numerology或sidelink逻辑信道或承载所映射的TTI的帧长信息等。
在一实施例中，对于上述示例中所提到的sidelink重传配置信息所包括的信息，需要说明的是，sidelink重传方式可以用于配置UE进行反馈或重传的方式，以使得UE根据被配置的方式进行反馈或重传，在一实施例中，sidelink重传方式可以包括以下方式中的任意一个：HARQ连续重传、ARQ 连续重传、HARQ反馈与HARQ重传、HARQ重传以及ARQ反馈与ARQ重传的结合、HARQ反馈与HARQ重传以及ARQ反馈与ARQ重传的结合等。
在一实施例中，对于上述示例中所提到的sidelink传输可靠性信息可以用于指示sidelink重传方式和/或MAC重传配置信息和/或RLC重传配置信息所能提供的sidelink传输可靠性等级；例如，sidelink传输可靠性信息可以包括以下至少一个：量化的sidelink传输可靠性级别，如高可靠级、中可靠级和低可靠级等、sidelink传输丢包率等。
在一实施例中，对于上述示例中所提到的sidelink逻辑信道或承载标识，可以包括：指示sidelink逻辑信道或承载所映射的sidelink重传配置信息；可以理解地，不同承载级别的sidelink逻辑信道或承载分别具有各自对应的sidelink重传配置信息；
在一实施例中，对于上述示例中所提到的MAC重传配置信息，可以包括以下信息中的至少一个：HARQ连续重传次数、HARQ最大重传次数、HARQ进程号、sidelink发送功率以及sidelink的调制和MCS、以及冗余版本号(RV，redundancy version)。
在一实施例中，对于上述示例中所提到的RLC重传配置信息，可以包括发送RLC重传配置信息和或接收RLC重传配置信息；其中，发送RLC重传配置信息包括：ARQ连续重传次数或以下信息的任意组合：ARQ最大重传次数、RLC AM序列号长度、轮询重传定时器、轮询协议数据单元和轮询字节数；而接收RLC重传配置信息包括：RLC AM序列号长度、重排序定时器t-reordering和状态禁止定时器t-statusprohibit。
对于上述重排序定时器t-reordering，需要说明的是，如果sidelink重传方式不包含HARQ反馈，也就是说如果重传方式为HARQ重传以及ARQ反馈与ARQ重传的结合时，t-reordering可设置为0，或者不对所述重排序 定时器进行设置。例如，接收信息的UE的RLC层接收到非顺序接收的数据包，也就是接收信息UE发现有数据包丢失，则立即触发ARQ反馈NACK(NACK可以为RLC状态报告)，以要求发送信息的UE重传丢失的数据包；
如果sidelink重传方式包含HARQ反馈，也就是说如果重传方式为HARQ反馈与HARQ重传以及ARQ反馈与ARQ重传的结合时，可以根据HARQ最大重传次数及HARQ重传所需时间设置t-reordering；或者，还可以根据sidelink逻辑信道或承载所映射的numerology或者TTI的帧长信息为单位来设置t-reordering值。
在一实施例中，对于上述示例中所提到的sidelink反馈或传输或重传资源，可以包括以下至少一项：用于发送sidelink HARQ反馈的资源指示、用于sidelink通信发送的资源或资源池、用于sidelink通信发送的半静态资源、用于sidelink通信重传的资源/资源池、用于sidelink通信发送/重传与用于sidelink HARQ反馈的结对资源、用于sidelink通信发送/重传资源与用于sidelink HARQ反馈资源的结对关系；其中，用于发送sidelink HARQ反馈的资源指示包括以下至少之一：sidelink HARQ传输与反馈的时间关系、帧偏移、子帧偏移、资源模式或位图，以及资源索引等。
示例性地，对于S201所述的UE获取旁链sidelink重传配置信息这一步骤，在实现过程中，可以包括：
UE接收基站发送的sidelink重传配置信息；或，
UE通过预配置信息获取sidelink重传配置信息；或，
UE接收对端UE发送的sidelink重传配置信息。
需要说明的是，对于本发明实施例中的技术方案，当技术方案是基于LTE或eLTE架构来阐述时，该基站可以为eNB；，当技术方案是基于第五代移动通信技术(5G，5th-Generation)来阐述时，该基站可以为5G基站(gNB)，本发明实施例对此不作赘述。
在一实施例中，对于上述示例中所提到的UE接收基站发送的sidelink重传配置信息，可以包括：UE从系统广播消息中接收基站发送的sidelink重传配置信息；或，UE从无线资源控制(RRC，Radio Resource Control)专有信令中接收sidelink重传配置信息。
在一实施例中，对于上述示例中所提到的UE通过预配置信息获取sidelink重传配置信息，可以包括：UE从临近服务功能实体(ProSe Function，Proximity Based Services Function)或V2X控制功能实体(V2X control function)获得包含sidelink重传配置信息的预配置信息；
在一实施例中，对于上述示例中所提到的UE接收对端UE发送的sidelink重传配置信息，可以包括：UE接收由对端UE发送的且承载有sidelink重传配置信息的PC5信令；和/或，UE接收由对端UE发送的且承载有sidelink反馈资源的sidelink控制信息(SCI，Sidelink Control Information)。
需要说明的是，对于S201，所述sidelink重传配置信息可以是小区级别的sidelink重传配置信息，或承载级别的sidelink重传配置信息。
示例性地，在S201之前，本实施例所述的方法还可以包括：
UE发送sidelink重传指示信息给基站；
需要说明的是，对于LTE架构来说，该基站可以为eNB，对于第五代移动通信技术(5G，5th-Generation)来说，该基站可以为5G基站(gNB)。
在一实施例中，所述sidelink重传指示信息包括以下至少之一：业务/承载可靠性需求/等级，业务/承载丢包率要求，业务类型，优先级，延迟需求，sidelink重传需求指示，UE倾向的sidelink重传配置，UE能够支持的sidelink重传配置，sidelink资源请求，sidelink缓冲区状态上报。
在一实施例中，对于S201的实现过程，在UE接收基站发送的sidelink重传配置信息之前或之后，所述方法还可以包括：
UE接收基站配置的sidelink发送功率和/或sidelink调制编码样式MCS；其中，所述UE的发送功率和/或MCS由基站通过监听sidelink上的发送及反馈，并根据接收UE反馈的NACK频次进行配置。
示例性地，结合前述针对S201的阐述，对于S202这一步骤，可以包括UE根据所述sidelink重传配置信息执行sidelink反馈以及UE根据所述sidelink重传配置信息执行sidelink重传两个方面，在实现过程中，
对于第一方面，UE根据所述sidelink重传配置信息执行sidelink反馈，可以包括以下至少一项：
当UE被配置为sidelink HARQ反馈时，UE使用接收到的用于发送sidelink HARQ反馈的资源执行sidelink HARQ反馈；
当UE被配置为sidelink ARQ反馈时，UE根据接收到的RLC重传配置信息执行sidelink ARQ反馈；可以理解地，sidelink ARQ反馈的形式可以是sidelink RLC状态报告；
对于第二方面，UE根据所述sidelink重传配置信息执行sidelink重传，可以包括以下至少一项：
当UE选择或被配置为HARQ连续重传时，UE根据HARQ连续重传次数执行sidelink重传；
当UE选择或被配置为ARQ连续重传时，UE根据ARQ连续重传次数执行sidelink重传；
当UE选择或被配置为HARQ反馈与HARQ重传时，UE根据HARQ最大重传次数、sidelink发送功率、sidelink的MCS和冗余版本号中的一项或多项执行sidelink重传；
当UE选择或被配置为HARQ重传以及ARQ反馈与ARQ重传的结合时，UE根据HARQ连续重传次数及RLC重传配置信息执行sidelink重传；
当UE选择或被配置为HARQ反馈与HARQ重传以及ARQ反馈与ARQ 重传的结合时，UE根据HARQ最大重传次数、sidelink发送功率、sidelink的MCS、冗余版本号、以及RLC重传配置信息中的一项或多项执行sidelink重传；
UE使用预配置的sidelink重传配置信息执行sidelink重传。
示例性地，在UE根据sidelink重传配置信息执行sidelink重传之前，本实施例所述的方法还可以包括：
UE接收对端UE发送的sidelink HARQ反馈或sidelink ARQ反馈；
可以理解地，sidelink ARQ反馈可以为sidelink RLC状态报告。
示例性地，在所述UE根据sidelink重传配置信息执行sidelink重传之前或之后，本实施例所述的方法还可以包括：
UE调整sidelink发送功率和/或sidelink的MCS；
在一实施例中，UE可以根据接收信息的UE所反馈的NACK频次调整sidelink发送功率和/或sidelink的MCS。
示例性地，当sidelink重传配置信息为基站发送的时候，在所述UE根据sidelink重传配置信息执行sidelink重传之前或之后，本实施例所述的方法还可以包括：
UE接收基站发送的sidelink上丢失的数据包；
需要说明的是，以eNB为例，eNB可以监听sidelink上的发送及反馈，若监听到NACK反馈，则eNB通过Uu接口的下行子帧或上行子帧中的sidelink资源发送丢失的数据包给接收信息的UE。
对于上述技术方案，需要说明的是，对于时延要求非常高的eV2X场景，通过在MAC层多次连续重传(即HARQ重传)，提高接收可靠性，并且HARQ连续重传次数是可配置的。
而且，对于sidelink单播通信，在sidelink MAC层引入了HARQ ACK/NACK反馈机制，设计反馈信道。接收信息的UE反馈ACK或NACK， 发送信息的UE监听到NACK后，触发HARQ重传。同时，发送信息的UE可以根据接收信息的UE所反馈的NACK频次，调整发送功率和/或MCS。
此外，对于可靠性要求非常高而延迟需求相对宽松的eV2X sidelink单播通信场景，引入并优化了sidelink RLC层的ARQ反馈及重传机制。如果HARQ无反馈，则发送信息的UE通过sidelink发送的数据包是按发送时序到达接收信息的UE的RLC层的，但是出现丢包情况下，如果接收信息的UE的RLC层收到非按序接收的数据包，则认为未按序收到的数据包丢失，也就是不需要t-reordering或设置t-reordering值为0，立即触发RLC状态反馈报告，发送信息的UE在收到状态反馈报告后重传丢失的数据包。如果HARQ存在反馈且有多个并行HARQ进程，则接收信息的UE的RLC层可能出现乱序。因此设置了RLC层的t-reordering定时器判断数据丢失，该定时器取值可以根据UE使用的不同的numerology或radio bearer所映射的numerology或TTI帧长配置不同的值，如果将以使用的TTI帧长为单位设置t-reordering，则该定时器超时，接收信息的UE触发状态反馈报告并等待发送信息的UE进行重传。
通过上述说明，可以得出，本实施例提供的一种信息传输的方法；在不同场景、不同可靠性需求的应用或业务的前提下，使用合适的sidelink重传配置信息来保证可靠性，从而满足高可靠性的车联网通信需求。
基于前述实施例相同的发明构思，本实施例提供了一种信息传输的方法，该方法可以应用于车联网中的基站，需要说明的是，对于本发明实施例中的技术方案，当技术方案是基于LTE架构来阐述时，该基站可以为eNB；，当技术方案是基于5G来阐述时，该基站可以为5G基站(gNB)，本发明实施例对此不作赘述。
参见图3，本实施例提供的方法可以包括：
S301：基站发送旁链(sidelink)重传配置信息给UE；
需要说明的是，本步骤所涉及到的sidelink重传配置信息，其内容可以参照实施例一中针对sidelink重传配置信息的描述。
示例性地，sidelink重传配置信息可以包括以下信息中的至少一项：sidelink重传方式、sidelink传输可靠性信息、MAC重传配置信息、RLC重传配置信息、sidelink反馈或传输或重传资源、sidelink逻辑信道或承载所映射的参数配置numerology以及TTI的帧长信息等。
在一实施例中，对于上述示例中所提到的sidelink重传配置信息所包括的信息，需要说明的是，sidelink重传方式可以用于配置UE进行反馈或重传的方式，以使得UE根据被配置的方式进行反馈或重传，在一实施例中，sidelink重传方式可以包括以下方式中的任意一个：HARQ连续重传、ARQ连续重传、HARQ反馈与HARQ重传、HARQ重传以及ARQ反馈与ARQ重传的结合、HARQ反馈与HARQ重传以及ARQ反馈与ARQ重传的结合等。
在一实施例中，对于上述示例中所提到的sidelink传输可靠性信息可以用于指示sidelink重传方式和/或MAC重传配置信息和/或RLC重传配置信息所能提供的sidelink传输可靠性等级；在一实施例中，sidelink传输可靠性信息可以包括以下至少一个：量化的sidelink传输可靠性级别，如高可靠级、中可靠级和低可靠级等，以及sidelink传输丢包率。
在一实施例中，对于上述示例中所提到的MAC重传配置信息，可以包括以下信息中的至少一个：HARQ连续重传次数、HARQ最大重传次数、HARQ进程号、sidelink发送功率、sidelink的调制和编码样式(MCS，Modulation and Coding Scheme)、以及冗余版本号。
在一实施例中，对于上述示例中所提到的RLC重传配置信息，可以包括发送RLC重传配置信息和或接收RLC重传配置信息；其中，发送RLC 重传配置信息包括：ARQ连续重传次数或以下信息的任意组合：ARQ最大重传次数、RLC AM序列号长度、轮询重传定时器、轮询协议数据单元和轮询字节数；而接收RLC重传配置信息包括：RLC AM序列号长度、重排序定时器t-reordering和状态禁止定时器t-statusprohibit。
对于上述重排序定时器t-reordering，需要说明的是，如果sidelink重传方式不包含HARQ反馈，也就是说如果重传方式为HARQ重传以及ARQ反馈与ARQ重传的结合时，t-reordering可设置为0。在一实施例中，接收信息的UE的RLC层接收到非顺序接收的数据包，也就是接收信息UE发现有数据包丢失，则立即触发ARQ反馈NACK(NACK可以为RLC状态报告)，以要求发送信息的UE重传丢失的数据包；
如果sidelink重传方式包含HARQ反馈，也就是说如果重传方式为HARQ反馈与HARQ重传以及ARQ反馈与ARQ重传的结合时，可以根据HARQ最大重传次数及HARQ重传所需时间设置t-reordering；或者，还可以根据sidelink逻辑信道或承载所映射的numerology或者TTI的帧长信息为单位来设置t-reordering值。
在一实施例中，对于上述示例中所提到的sidelink反馈或传输或重传资源，可以包括以下至少一项：用于发送sidelink HARQ反馈的资源指示、用于sidelink通信发送的资源或资源池、用于sidelink通信发送的半静态资源、用于sidelink通信重传的资源/资源池、用于sidelink通信发送/重传与用于sidelink HARQ反馈的结对资源、用于sidelink通信发送/重传资源与用于sidelink HARQ反馈资源的结对关系；其中，用于发送sidelink HARQ反馈的资源指示包括以下至少之一：sidelink HARQ传输与反馈的时间关系、帧偏移、子帧偏移、资源模式或资源位图、以及资源索引等。
示例性地，在S301之前，本实施例所述的方法还可以包括：
基站接收UE发送的sidelink重传指示信息；
在一实施例中，所述sidelink重传指示信息包括以下至少之一：业务/承载可靠性需求/等级，业务/承载丢包率要求，业务类型，优先级，延迟需求，sidelink重传需求指示，UE倾向的sidelink重传配置，UE能够支持的sidelink重传配置，sidelink资源请求，sidelink缓冲区状态上报。
示例性地，在S301之后，本实施例所述的方法还可以包括：
基站监听sidelink上的发送及反馈；
基站为发送信息的UE配置或修改sidelink发送功率和/或sidelink的MCS，或，基站发送sidelink上丢失的数据包给接收信息的UE；
在一实施例中，以eNB为例，若eNB监听到NACK反馈，则eNB通过Uu接口的下行子帧或上行子帧中的sidelink资源发送丢失的数据包给接收信息的UE。
本实施例提供的一种信息传输的方法，在不同场景、不同可靠性需求的应用或业务的前提下，基站向UE发送合适的sidelink重传配置信息，从而使得UE使用合适的sidelink重传配置信息来保证可靠性，从而满足高可靠性的车联网通信需求。
在接下来的实施例中，发送信息的UE1和接收信息的UE2处于eNB覆盖内，并且通过sidelink进行V2X通信。如图4所示，本实施例可以包括：
S401：UE1和UE2从eNB发送的系统广播消息中接收到旁链(sidelink)重传配置信息；
举例来说，如eNB可以向小区内的UE广播sidelink HARQ连续重传次数，也可以向UE1和UE2分别广播sidelink HARQ最多连续重传次数和/或不同可靠性等级对应的HARQ传输次数。
S402：UE1根据业务的重要性及可靠性需求决定是否重传及重传次数。
在一实施例中，UE1会在SCI中指示此次数据传输是初传还是重传， 后续是否还有重传，数据的传输总次数、数据的当前传输次数和数据传输资源等信息；
S403：UE2根据接收到的SCI中的信息接收UE1发送的数据。
在接下来的实施例中，发送信息的UE1处于RRC连接态，如图5所示，本实施例可以包括：
S501：UE1向eNB发送旁链(sidelink)重传指示信息；
需要说明的是，sidelink重传指示信息用于辅助eNB为UE1配置sidelink重传方式及相应的sidelink重传配置参数，在一实施例中，sidelink重传指示信息可以包括业务可靠性需求或等级、业务丢包率指标、sidelink重传需求指示、UE期望获得的sidelink重传方式、UE可支持的sidelink重传方式等；
其中，业务可靠性需求或业务可靠性等级用于指示UE将要在sidelink上发送的业务的可靠性需求；sidelink重传需求指示表示sidelink上是否需要重传；sidelink重传方式包括混合自动重传HARQ连续重传，自动重传ARQ连续重传，HARQ反馈与HARQ重传，HARQ重传以及ARQ反馈与ARQ重传的结合，HARQ反馈与HARQ重传以及ARQ反馈与ARQ重传的结合。
S502：eNB接收到UE1发送的旁链重传指示信息后，为UE1配置旁链重传配置信息；
sidelink重传配置信息，可以包括sidelink重传方式，sidelink传输可靠性等级信息，MAC重传配置信息，RLC重传配置信息；其中，sidelink传输可靠性等级信息用于指示sidelink重传方式和/或重传配置信息能够提供的sidelink传输可靠性等级；MAC重传配置信息包括：HARQ连续重传次数或HARQ最大重传次数，还可以包括可能的HARQ重传资源、sidelink发送功率、sidelink的MCS中的至少一项等；RLC重传配置信息包括：ARQ 连续重传次数或以下信息的任意组合：ARQ最大重传次数、RLC AM序列号长度、轮询重传定时器、轮询协议数据单元和轮询字节数、重排序定时器t-reordering和状态禁止定时器t-statusprohibit。
在本实例中，sidelink重传方式为HARQ重传以及ARQ反馈与ARQ重传的结合；MAC重传配置信息包括HARQ连续重传次数；RLC重传配置信息包括ARQ最大重传次数及ARQ等配置。
S503：UE1接收eNB发送的旁链重传配置信息；
S504：UE1根据eNB发送的旁链重传配置信息进行重传配置；
S505：UE1向UE2通知旁链重传配置信息；
在一实施例中，UE1可以告知UE2其重传方式及相关配置，如果有HARQ反馈或ARQ反馈，UE2需要具备相应地反馈能力。
S506：UE2回复确认信息。
随后，UE1向eNB请求sidelink发送资源并按照sidelink重传配置进行重传。发送UE1在MAC层会进行HARQ连续重传，SCI中会指示当前传输是初传还是重传以及数据传输资源的位置。由于没有HARQ反馈，UE1的数据应该是按序到达UE2的RLC层，但有可能会出现丢包，因此，
S507：UE2的RLC层收到非按序到达的数据包，立即触发状态报告向UE1反馈NACK；
可以理解地，对于非按序到达的数据包，UE2可以认为其前未收到的数据包为丢失，也就是说，这种情况下，重排序定时器t-reordering可设置为0或不需要设置t-reordering。
S508：UE1接收UE2发送的状态报告(status pdu)；
S509：UE1对丢失的SCI及数据包进行重传。
在接下来的实施例中，发送信息的UE1与接收信息的UE2处于RRC连接态，如图6所示，本实施例可以包括：
S601：UE1在PC5接口有V2X通信需求时通知eNB要进行V2X旁链通信；
S602：UE2在PC5接口有V2X通信需求时通知eNB要进行V2X旁链通信；
可以理解地，S601与S602之间在实施过程中并不存在先后顺序，S601与S602仅用于区分不同步骤。在S601与S602中，UE1或UE2向eNB发送的通知中可以携带sidelink重传指示的相关信息。
需要说明的是，eNB在知晓UE1、UE2的发送-接收目标对信息及其numerology信息，在给UE1、UE2配置sidelink通信资源时，可以为其配置sidelink重传配置信息。在一实施例中，sidelink重传配置信息包括以下之一或组合：sidelink重传方式，sidelink传输可靠性信息，MAC重传配置信息，RLC重传配置信息，sidelink反馈或传输或重传资源。在本实例中，设定sidelink重传方式为HARQ反馈与HARQ重传以及ARQ反馈与ARQ重传的结合；其中，UE1的MAC重传配置信息包括：HARQ最大重传次数、sidelink发送功率、sidelink的MCS和HARQ重传资源中的至少一项；RLC重传配置信息包括：ARQ最大重传次数，RLC AM序列号长度，轮询重传定时器，轮询协议数据单元，轮询字节数；UE2的RLC重传配置信息包括重排序定时器t-reordering，状态禁止定时器t-statusprohibit；其中，t-reordering取值可根据HARQ最大重传次数与HARQ重传所需时间设置，也可以根据UE的numerology信息设置。sidelink反馈或传输或重传资源，可以包括以下至少一项：用于发送sidelink HARQ反馈的资源指示、用于sidelink通信发送的资源或资源池、用于sidelink通信发送半静态资源、用于sidelink通信重传的资源/资源池、用于sidelink通信发送/重传与用于sidelink HARQ反馈的结对资源、用于sidelink通信发送/重传资源与用于sidelink HARQ反馈资源的结对关系；其中，用于发送sidelink HARQ反馈 的资源指示包括以下至少之一：sidelink HARQ传输与反馈的时间关系、帧偏移、子帧偏移、资源模式或位图和资源索引等。
S603：eNB向UE1发送旁链重传配置信息；
S604：eNB向UE2发送旁链重传配置信息；
S605：UE1根据配置的旁链通信资源及重传配置信息执行旁链传输及重传。
在一实施例中，UE1在SCI中包含初传重传指示，数据传输资源以及HARQ反馈资源指示，其中，HARQ反馈资源指示用于告知UE2其当前传输数据所对应的HARQ反馈资源，可以是eNB在为UE1配置sidelink通信发送资源时，配置相应的HARQ反馈资源，即用于sidelink通信发送/重传与用于sidelink HARQ反馈的结对资源；或UE1自己在选择发送资源时选择相应的HARQ反馈资源，然后通过SCI指示给UE2。
S606：UE2在接收到SCI后进行反馈；
在一实施例中，UE2可以使用UE1指示的HARQ反馈资源反馈是否接收到相应数据；或根据sidelink通信发送/重传资源与用于sidelink HARQ反馈资源的结对关系，获得当前接收的UE1的数据所对应的sidelink HARQ反馈资源；UE2也可以使用专门设计的sidelink反馈信道反馈ACK/NACK。
在UE2反馈NACK后，本实施例的技术方案执行S607：UE1监听到NACK后，通过HARQ重传丢失的数据包。
由于存在HARQ反馈，假设有多个并行的HARQ进程，则UE2接收到的数据包可能出现乱序，
S608：UE2的RLC检测到数据包丢失，则触发状态报告反馈NACK。
当t-reordering超时，则相应的数据包确定为丢失。
S609：UE1在收到UE2的状态报告后重传丢失的数据包。
在接下来的实施例中，发送信息的为UE1和接收信息的为UE2，参见 图7，本实施例的技术方案包括：
S701：UE1向eNB发起旁链服务请求；
可以理解地，当UE1有通过PC5接口进行V2X通信的需求时，会向eNB发起sidelink服务请求，该请求中可以包含sidelink V2X业务特征或QoS需求(QoS需求可以包含可靠性需求/丢包率要求、重传指示等)。该请求可以用于请求配置sidelink承载建立。
S702：eNB根据QoS需求为UE1配置旁链承载建立，并为该旁链承载配置相应的旁链重传配置信息。
在一实施例中，eNB可以根据QoS需求中的丢包率/可靠性需求以及sidelink重传指示信息来配置sidelink重传配置信息。
S703：UE1接收到eNB配置的旁链承载信息和重传配置信息，与UE2交互并建立旁链承载；
S704：UE2在旁链承载建立完成和获得重传配置信息后，发送确认消息给UE1。
可以理解地，UE1和UE2之间sidelink承载建立完成并交互承载对应的重传配置信息。UE1和UE2向eNB请求sidelink通信资源并按配置执行sidelink传输、可能的反馈及所需的重传。
在接下来的实施例中，发送信息的为UE1和接收信息的为UE2，在本实施例中，UE1及UE2从eNB获取sidelink通信资源，通过PC5接口进行sidelink单播通信。参见图8，本实施例的技术方案包括：
S801：UE1从eNB获取旁链重传配置信息；
S802：UE2从eNB获取旁链重传配置信息；
可以理解地，S801与S802之间在实施过程中并不存在先后顺序，S801与S802仅用于区分不同步骤。在S601与S602中，重传配置信息均支持HARQ ACK/NACK反馈。
在一实施例中，UE2使用sidelink反馈信道来反馈ACK/NACK，UE1监听到NACK后触发HARQ重传。由于sidelink所使用的资源是由eNB分配的蜂窝上行频谱资源或专用频谱资源，所以eNB是可以知晓sidelink发送资源信息及接收资源信息的。因此，
S803：eNB监听旁链上的传输与反馈。
可以理解地，如果eNB监听到sidelink上的NACK反馈，则执行步骤S804：eNB重传该NACK反馈对应的旁链传输块(TB，Transport Block)；可以通过Uu接口的下行子帧传输给UE2，并指示UE2该数据包是sidelink上的数据包。此时，UE2收到该数据包后根据指示将其转到sidelink接收buffer并往上层投递。在一实施例中，eNB通过上行子帧的sidelink资源将sidelink上丢失的数据包通过Uu接口发送给UE2。
此外，eNB除了向UE2进行重发，还可以对UE1的sidelink发送配置进行设置，如步骤S805：eNB调节UE1的旁链发射功率和/或旁链MCS。
在接下来的实施例中，发送信息的为UE1和接收信息的为UE2，如图9所示，本实施例的技术方案包括：
S901：UE1和UE2从eNB获得旁链通信资源及旁链重传配置信息；
举例来说，sidelink重传方式为HARQ反馈与HARQ重传以及ARQ反馈与ARQ重传的结合，MAC重传配置信息包括：最大HARQ重传次数、发送功率、MCS和HARQ重传资源中的至少一项；RLC重传配置信息包括：ARQ最大重传次数、RLC AM序列号长度、轮询重传定时器、轮询协议数据单元、轮询字节数、重排序定时器t-reordering和状态禁止定时器t-statusprohibit。
S902：UE1和UE2根据所获得的配置信息在PC5接口上进行旁链传输及可能的重传。
需要说明的是，由于HARQ NACK反馈频次或ARQ NACK反馈频次 是能够反应信道状况，因此，在经过一定时间传输及重传后，本实施例还包括步骤S903：UE1调整sidelink上的发送功率和/或调整编码方式MCS；
这里，在实际实施时，UE1可根据接收的UE2发送的HARQ NACK反馈频次或ARQ NACK反馈频次，调整sidelink上的发送功率和/或调整编码方式MCS。
可以理解地，UE1可以根据调整后的sidelink上的发送功率和/或MCS进行sidelink传输。
以上通过六个实施例对前述实施例的技术方案的实现过程进行了详细阐述，在不同场景、不同可靠性需求的应用或业务的前提下，使用合适的sidelink重传配置信息来保证可靠性，从而满足高可靠性的车联网通信需求。
基于前述实施例相同的发明构思，参见图10，其示出了本发明实施例提供的一种应用于车联网架构中的UE 100，可以包括：获取模块1001和执行模块1002；其中，
所述获取模块1001，配置为获取旁链sidelink重传配置信息；
所述执行模块1002，配置为根据所述sidelink重传配置信息执行sidelink反馈或sidelink重传。
示例性地，所述获取模块1001，配置为接收基站发送的所述sidelink重传配置信息；或，
配置为通过预配置信息获取所述sidelink重传配置信息；或，
配置为接收对端UE发送的所述sidelink重传配置信息。
需要说明的是，上述所涉及到的sidelink重传配置信息，其内容可以参照实施例一中针对sidelink重传配置信息的描述，本实施例对此不做赘述。
在一实施例中，所述获取模块1001，配置为从系统广播消息中接收所述基站发送的所述sidelink重传配置信息；
或，配置为从无线资源控制RRC专有信令中接收所述sidelink重传配 置信息。
在一实施例中，所述获取模块1001，配置为从临近服务功能实体ProSe Function或V2X控制功能实体V2X control function获得包含所述sidelink重传配置信息的预配置信息。
在一实施例中，所述获取模块1001，配置为接收由所述对端UE发送的且承载有所述sidelink重传配置信息的PC5信令；
和/或，
配置为接收由所述对端UE发送的且承载有所述sidelink反馈资源的sidelink控制信息SCI。
示例性地，参见图11，所述UE 100还包括：第一发送模块1003，配置为发送sidelink重传指示信息给基站；其中，所述sidelink重传指示信息包括以下任意之一或组合：业务/承载可靠性需求/等级，业务/承载丢包率要求，业务类型，优先级，延迟需求，sidelink重传需求指示，UE 100倾向的sidelink重传配置，UE 100能够支持的sidelink重传配置，sidelink资源请求和sidelink缓冲区状态上报。
在一实施例中，参见图11，所述UE 100还包括第一接收模块1004，配置为接收所述基站配置的sidelink发送功率和/或sidelink调制编码样式MCS；其中，所述UE 100的发送功率和/或MCS由基站通过监听sidelink上的发送及反馈，并根据接收UE 100反馈的NACK频次进行配置。
示例性地，所述执行模块1002，配置为当UE 100被配置为sidelink HARQ反馈时，使用接收到的用于发送sidelink HARQ反馈的资源执行sidelink HARQ反馈；或者，
所述执行模块1002，配置为当UE 100被配置为sidelink ARQ反馈时，根据接收到的RLC重传配置信息执行sidelink ARQ反馈。
示例性地，所述执行模块1002，配置为当所述UE 100选择或被配置为 HARQ连续重传时，根据HARQ连续重传次数执行sidelink重传；或者，
所述执行模块1002，配置为当所述UE 100选择或被配置为ARQ连续重传时，所述UE 100根据ARQ连续重传次数执行sidelink重传；或者，
所述执行模块1002，配置为当所述UE 100选择或被配置为HARQ反馈与HARQ重传时，根据HARQ最大重传次数、sidelink发送功率、sidelink的MCS和冗余版本号中的一项或多项执行sidelink重传；或者，
所述执行模块1002，配置为当所述UE 100选择或被配置为HARQ重传以及ARQ反馈与ARQ重传的结合时，根据HARQ连续重传次数及RLC重传配置信息执行sidelink重传；或者，
所述执行模块1002，配置为当所述UE 100选择或被配置为HARQ反馈与HARQ重传以及ARQ反馈与ARQ重传的结合时，根据HARQ最大重传次数、sidelink发送功率、sidelink的MCS、冗余版本号及RLC重传配置信息中的一项或多项执行sidelink重传；或者，
所述执行模块1002，配置为使用预配置的sidelink重传配置信息执行sidelink重传；
或者，所述执行模块1002，配置为根据不同sidelink逻辑信道或承载所映射的sidelink重传配置信息，分别执行各sidelink逻辑信道或承载的sidelink重传。
示例性地，参见图11，所述UE 100还包括：调整模块1005，配置为调整sidelink发送功率和/或sidelink的MCS。
示例性地，参见图11，所述UE 100还包括：第二接收模块1006，配置为接收对端UE发送的sidelink HARQ反馈或sidelink ARQ反馈。
示例性地，参见图11，所述UE 100还包括：第三接收模块1007，配置为接收所述基站发送的sidelink上丢失的数据包。
另外，在本实施例中的各功能模块可以集成在一个处理单元中，也可 以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。
所述集成的单元如果以软件功能模块的形式实现并非作为独立的产品进行销售或使用时，可以存储在一个非瞬时性计算机可读取存储介质中，基于这样的理解，本实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或processor(处理器)执行本实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
本实施例中的一种信息传输的方法对应的计算机程序指令可以被存储在光盘，硬盘，U盘等存储介质上，当存储介质中的与一种信息传输方法对应的计算机程序指令被一电子设备读取或被执行时，包括如下步骤：
获取旁链sidelink重传配置信息；
根据所述sidelink重传配置信息执行sidelink反馈或sidelink重传。
在一实施例中，存储介质中存储的与步骤：所述UE获取旁链sidelink重传配置信息，可以包括：
接收基站发送的sidelink重传配置信息；或，
通过预配置信息获取sidelink重传配置信息；或，
接收对端UE发送的sidelink重传配置信息。
在一实施例中，存储介质中存储的与步骤：在获取旁链sidelink重传配置信息之前，所述方法还可以包括：
发送sidelink重传指示信息给基站。
在一实施例中，存储介质中存储的与步骤：在接收基站发送的sidelink重传配置信息之前或之后，所述方法还可以包括：
接收基站配置的sidelink发送功率和/或sidelink调制编码样式MCS；其中，所述UE的发送功率和/或MCS由基站通过监听sidelink上的发送及反馈，并根据接收UE反馈的NACK频次进行配置。
在一实施例中，存储介质中存储的与步骤：根据所述sidelink重传配置信息执行sidelink反馈，可以包括以下至少一项：
当UE被配置为sidelink HARQ反馈时，使用接收到的用于发送sidelink HARQ反馈的资源执行sidelink HARQ反馈；
当UE被配置为sidelink ARQ反馈时，根据接收到的RLC重传配置信息执行sidelink ARQ反馈；可以理解地，sidelink ARQ反馈的形式可以是sidelink RLC状态报告。
在一实施例中，存储介质中存储的与步骤：根据所述sidelink重传配置信息执行sidelink重传，可以包括以下至少一项：
当UE选择或被配置为HARQ连续重传时，根据HARQ连续重传次数执行sidelink重传；
当UE选择或被配置为ARQ连续重传时，根据ARQ连续重传次数执行sidelink重传；
当UE选择或被配置为HARQ反馈与HARQ重传时，根据HARQ最大重传次数、sidelink发送功率、sidelink的MCS和冗余版本号中的一项或多项执行sidelink重传；
当UE选择或被配置为HARQ重传以及ARQ反馈与ARQ重传的结合时，根据HARQ连续重传次数及RLC重传配置信息执行sidelink重传；
当UE选择或被配置为HARQ反馈与HARQ重传以及ARQ反馈与ARQ 重传的结合时，根据HARQ最大重传次数、sidelink发送功率、sidelink的MCS、冗余版本号及RLC重传配置信息中的一项或多项执行sidelink重传；
使用预配置的sidelink重传配置信息执行sidelink重传；
根据不同sidelink逻辑信道或承载所映射的sidelink重传配置信息，分别执行各sidelink逻辑信道或承载的sidelink重传。
在一实施例中，存储介质中存储的与步骤：在根据sidelink重传配置信息执行sidelink重传之前，所述方法还可以包括：
接收对端UE发送的sidelink HARQ反馈或sidelink ARQ反馈。
在一实施例中，存储介质中存储的与步骤：在根据sidelink重传配置信息执行sidelink重传之前或之后，所述方法还可以包括：
调整sidelink发送功率和/或sidelink的MCS。
在一实施例中，存储介质中存储的与步骤：在根据sidelink重传配置信息执行sidelink重传之前或之后，所述方法还可以包括：
接收基站发送的sidelink上丢失的数据包。
本实施例提供的一种UE 100；在不同场景、不同可靠性需求的应用或业务的前提下，使用合适的sidelink重传配置信息来保证可靠性，从而满足高可靠性的车联网通信需求。
基于前述实施例相同的发明构思，参见图12，其示出了本发明实施例提供的一种UE100的硬件结构，可以包括：第一通信接口1201、第一存储器1202、第一处理器1203和第一总线1204；其中，
所述第一总线1204用于连接所述第一通信接口1201、所述第一处理器1203和所述第一存储器1202以及这些器件之间的相互通信；
所述第一通信接口1201，配置为与外部网元进行数据传输；
所述第一存储器1202，配置为存储指令和数据；
所述第一处理器1203执行所述指令用于：获取旁链sidelink重传配置 信息；以及，根据所述sidelink重传配置信息执行sidelink反馈或sidelink重传。
在实际应用中，上述第一存储器1202可以是易失性存储器(volatile memory)，例如随机存取存储器(RAM，Random-Access Memory)；或者非易失性存储器(non-volatile memory)，例如只读存储器(ROM，Read-Only Memory)，快闪存储器(flash memory)，硬盘(HDD，Hard Disk Drive)或固态硬盘(SSD，Solid-State Drive)；或者上述种类的存储器的组合，并向第一处理器1203提供指令和数据。
上述第一处理器1203可以为特定用途集成电路(ASIC，Application Specific Integrated Circuit)、数字信号处理器(DSP，Digital Signal Processor)、数字信号处理装置(DSPD，Digital Signal Processing Device)、可编程逻辑装置(PLD，Programmable Logic Device)、现场可编程门阵列(FPGA，Field Programmable Gate Array)、中央处理器(CPU，Central Processing Unit)、控制器、微控制器、微处理器中的至少一种。可以理解地，对于不同的设备，用于实现上述第一处理器功能的电子器件还可以为其它，本发明实施例不作限定。
示例性地，所述第一处理器1203，可以配置为：
接收基站发送的sidelink重传配置信息；或，
通过预配置信息获取sidelink重传配置信息；或，
接收对端UE发送的sidelink重传配置信息。
示例性地，所述第一处理器1203，还配置为发送sidelink重传指示信息给基站。
示例性地，所述第一处理器1203，还配置为接收基站配置的sidelink发送功率和/或sidelink调制编码样式MCS；其中，所述UE的发送功率和/或MCS由基站通过监听sidelink上的发送及反馈，并根据接收UE反馈的 NACK频次进行配置。
示例性地，所述第一处理器1203，可以配置为：
当UE被配置为sidelink HARQ反馈时，使用接收到的用于发送sidelink HARQ反馈的资源执行sidelink HARQ反馈；或者，
当UE被配置为sidelink ARQ反馈时，根据接收到的RLC重传配置信息执行sidelink ARQ反馈；可以理解地，sidelink ARQ反馈的形式可以是sidelink RLC状态报告。
示例性地，所述第一处理器1203，可以配置为：
当UE选择或被配置为HARQ连续重传时，根据HARQ连续重传次数执行sidelink重传；或者，
当UE选择或被配置为ARQ连续重传时，E根据ARQ连续重传次数执行sidelink重传；或者，
当UE选择或被配置为HARQ反馈与HARQ重传时，根据HARQ最大重传次数、sidelink发送功率、sidelink的MCS和冗余版本号中的一项或多项执行sidelink重传；或者，
当UE选择或被配置为HARQ重传以及ARQ反馈与ARQ重传的结合时，根据HARQ连续重传次数及RLC重传配置信息执行sidelink重传；或者，
当UE选择或被配置为HARQ反馈与HARQ重传以及ARQ反馈与ARQ重传的结合时，根据HARQ最大重传次数、sidelink发送功率、sidelink的MCS和冗余版本号及RLC重传配置信息中的一项或多项执行sidelink重传；或者，
使用预配置的sidelink重传配置信息执行sidelink重传；或者，
根据不同sidelink逻辑信道或承载所映射的sidelink重传配置信息，分别执行各sidelink逻辑信道或承载的sidelink重传。
示例性地，所述第一处理器1203，还配置为接收对端UE发送的sidelink HARQ反馈或sidelink ARQ反馈。
示例性地，所述第一处理器1203，还配置为调整sidelink发送功率和/或sidelink的MCS。
示例性地，所述第一处理器1203，还配置为接收基站发送的sidelink上丢失的数据包。
基于前述实施例相同的发明构思，参见图13，其示出了本发明实施例提供的一种基站130，包括第二发送模块1301，配置为发送sidelink重传配置信息给UE。
示例性地，参见图14，所述基站130还包括：第四接收模块1302，配置为接收所述UE发送的sidelink重传指示信息；
其中，所述sidelink重传指示信息包括以下至少之一：业务/承载可靠性需求/等级，业务/承载丢包率要求，业务类型，优先级，延迟需求，sidelink重传需求指示，UE倾向的sidelink重传配置，UE能够支持的sidelink重传配置，sidelink资源请求和sidelink缓冲区状态上报。
示例性地，参见图14，所述基站130还可以包括：监听模块1303、配置模块1304和第三发送模块1305，其中，所述监听模块1303，配置为监听sidelink上的发送及反馈，并触发所述配置模块1304或所述第三发送模块1305；
所述配置模块1304，配置为为发送信息的UE配置或修改sidelink发送功率和/或sidelink的MCS；
所述第三发送模块1305，配置为发送sidelink上丢失的数据包给接收信息的UE。
在一实施例中，所述监听模块1303，配置为监听sidelink上的发送及反馈，并当监听到NACK反馈时，触发所述第三发送模块1305；
所述第三发送模块1305，配置为通过Uu接口的下行子帧或上行子帧中的sidelink资源发送丢失的数据包给接收信息的UE。
另外，在本实施例中的各功能模块可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。
所述集成的单元如果以软件功能模块的形式实现并非作为独立的产品进行销售或使用时，可以存储在一个计算机可读取存储介质中，基于这样的理解，本实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或processor(处理器)执行本实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
本实施例中的一种信息传输的方法对应的计算机程序指令可以被存储在光盘，硬盘，U盘等存储介质上，当存储介质中的与一种信息传输方法对应的计算机程序指令被一电子设备读取或被执行时，包括如下步骤：
发送sidelink重传配置信息给UE。
需要说明的是，本步骤所涉及到的sidelink重传配置信息，其内容可以参照实施例一中针对sidelink重传配置信息的描述。
在一实施例中，存储介质中存储的与步骤：在发送sidelink重传配置信息给UE之前，所述方法还包括：
接收UE发送的sidelink重传指示信息；
在一实施例中，所述sidelink重传指示信息包括以下至少之一：业务/ 承载可靠性需求/等级，业务/承载丢包率要求，业务类型，优先级，延迟需求，sidelink重传需求指示，UE倾向的sidelink重传配置，UE能够支持的sidelink重传配置，sidelink资源请求，sidelink缓冲区状态上报。
在一实施例中，存储介质中存储的与步骤：在发送sidelink重传配置信息给UE之后，所述方法还包括：
监听sidelink上的发送及反馈；
为发送信息的UE配置或修改sidelink发送功率和/或sidelink的MCS，或，发送sidelink上丢失的数据包给接收信息的UE。
在一实施例中，存储介质中存储的与步骤：所述基站发送sidelink上丢失的数据包给接收信息的UE，包括：
监听sidelink上的发送及反馈；
当监听到NACK反馈时，通过Uu接口的下行子帧或上行子帧中的sidelink资源发送丢失的数据包给接收信息的UE。
本实施例提供的一种基站130，在不同场景、不同可靠性需求的应用或业务的前提下，基站130向UE发送合适的sidelink重传配置信息，从而使得UE使用合适的sidelink重传配置信息来保证可靠性，从而满足高可靠性的车联网通信需求。
基于前述实施例相同的发明构思，参见图15，其示出了本发明实施例提供的一种基站130的硬件结构，可以包括：第二通信接口1501、第二存储器1502、第二处理器1503和第二总线1504；其中，
所述第二总线1504用于连接所述第二通信接口1501、所述第二处理器1503和所述第二存储器1502以及这些器件之间的相互通信；
所述第二通信接口1501，配置为与外部网元进行数据传输；
所述第二存储器1502，配置为存储指令和数据；
所述第二处理器1503执行所述指令用于：发送sidelink重传配置信息 给UE。
在实际应用中，上述第二存储器1502可以是易失性存储器(volatile memory)，例如随机存取存储器(RAM，Random-Access Memory)；或者非易失性存储器(non-volatile memory)，例如只读存储器(ROM，Read-Only Memory)，快闪存储器(flash memory)，硬盘(HDD，Hard Disk Drive)或固态硬盘(SSD，Solid-State Drive)；或者上述种类的存储器的组合，并向第二处理器1503提供指令和数据。
上述第二处理器1503可以为特定用途集成电路(ASIC，Application Specific Integrated Circuit)、数字信号处理器(DSP，Digital Signal Processor)、数字信号处理装置(DSPD，Digital Signal Processing Device)、可编程逻辑装置(PLD，Programmable Logic Device)、现场可编程门阵列(FPGA，Field Programmable Gate Array)、中央处理器(CPU，Central Processing Unit)、控制器、微控制器、微处理器中的至少一种。可以理解地，对于不同的设备，用于实现上述第二处理器功能的电子器件还可以为其它，本发明实施例不作限定。
示例性地，所述第二处理器1503，还配置为接收UE发送的sidelink重传指示信息；
在一实施例中，所述sidelink重传指示信息包括以下任意之一或组合：业务/承载可靠性需求/等级，业务/承载丢包率要求，业务类型，优先级，延迟需求，sidelink重传需求指示，UE倾向的sidelink重传配置，UE能够支持的sidelink重传配置，sidelink资源请求，sidelink缓冲区状态上报。
示例性地，所述第二处理器1503，还配置为监听sidelink上的发送及反馈；
为发送信息的UE配置或修改sidelink发送功率和/或sidelink的MCS，或，发送sidelink上丢失的数据包给接收信息的UE。
在一实施例中，所述第二处理器1503，还配置为当监听到NACK反馈时，通过Uu接口的下行子帧或上行子帧中的sidelink资源发送丢失的数据包给接收信息的UE。
基于前述实施例相同的发明构思，参见图16，其示出了本发明实施例提供的一种信息传输的系统160，所述系统160包括：车联网架构中的用户设备UE100和基站130，其中，
所述UE100，配置为获取旁链sidelink重传配置信息；
以及，配置为根据所述sidelink重传配置信息执行sidelink反馈或sidelink重传；
所述基站130，配置为发送sidelink重传配置信息给所述UE100。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存 储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。
工业实用性
本发明实施例中处于车联网架构中的UE获取sidelink重传配置信息；所述UE根据所述sidelink重传配置信息执行sidelink反馈或sidelink重传。如此，在不同场景、不同可靠性需求的应用或业务的前提下，使用合适的sidelink重传配置信息来保证可靠性，从而满足高可靠性的车联网通信需求。

Claims (46)

  1. 一种信息传输的方法，所述方法应用于处于车联网架构中的用户设备UE，所述方法包括：
    UE获取旁链sidelink重传配置信息；
    所述UE根据所述sidelink重传配置信息执行sidelink反馈或sidelink重传。
  2. 根据权利要求1所述的方法，其中，所述sidelink重传配置信息包括以下信息中的至少一项：
    sidelink重传方式、sidelink传输可靠性信息、介质访问控制MAC重传配置信息、无线链路控制RLC重传配置信息、sidelink反馈或传输或重传资源、sidelink逻辑信道或承载所映射的参数配置numerology或sidelink逻辑信道或承载所映射的传输时间间隔TTI的帧长信息。
  3. 根据权利要求2所述的方法，其中，所述sidelink重传方式包括以下方式中的任意一个：
    混合自动重传请求HARQ连续重传、自动重传请求ARQ连续重传、HARQ反馈与HARQ重传、HARQ重传以及ARQ反馈与ARQ重传的结合、HARQ反馈与HARQ重传以及ARQ反馈与ARQ重传的结合。
  4. 根据权利要求2所述的方法，其中，所述MAC重传配置信息，包括以下信息中的至少一个：
    HARQ连续重传次数、HARQ最大重传次数、HARQ进程号、sidelink发送功率、sidelink的调制和编码样式MCS、以及冗余版本号。
  5. 根据权利要求2所述的方法，其中，所述RLC重传配置信息，包括：发送RLC重传配置信息和或接收RLC重传配置信息；
    其中，所述发送RLC重传配置信息包括：ARQ连续重传次数或以下信息的任意组合：ARQ最大重传次数、RLC AM确认模式序列号长度、轮询 重传定时器、轮询协议数据单元和轮询字节数；所述接收RLC重传配置信息包括：RLC AM序列号长度、重排序定时器和状态禁止定时器。
  6. 根据权利要求5所述的方法，其中，当所述sidelink重传方式不包含HARQ反馈时，所述重排序定时器设置为零，或者，不配置所述重排序定时器；
    当所述sidelink重传方式包含HARQ反馈时，根据HARQ最大重传次数及HARQ重传所需时间设置重排序定时器，或者，根据所述sidelink逻辑信道或承载所映射的numerology或TTI帧长信息中的至少一项来设置所述重排序定时器的值。
  7. 根据权利要求2所述的方法，其中，所述sidelink反馈或传输或重传资源，包括以下至少一项：
    用于发送sidelink HARQ反馈的资源指示、用于sidelink通信发送的资源或资源池、用于sidelink通信发送的半静态资源、用于sidelink通信重传的资源/资源池、用于sidelink通信发送/重传与用于sidelink HARQ反馈的结对资源、用于sidelink通信发送/重传资源与用于sidelink HARQ反馈资源的结对关系；其中，用于发送sidelink HARQ反馈的资源指示包括以下至少之一：sidelink HARQ传输与反馈的时间关系、帧偏移、子帧偏移、资源模式或资源位图、以及资源索引。
  8. 根据权利要求1所述的方法，其中，所述UE获取旁链sidelink重传配置信息，包括：
    所述UE接收基站发送的所述sidelink重传配置信息；或，
    所述UE通过预配置信息获取所述sidelink重传配置信息；或，
    所述UE接收对端UE发送的所述sidelink重传配置信息。
  9. 根据权利要求8所述的方法，其中，所述UE接收基站发送的所述sidelink重传配置信息，包括：
    所述UE从系统广播消息中接收所述基站发送的所述sidelink重传配置信息；
    或，所述UE从无线资源控制RRC专有信令中接收所述sidelink重传配置信息。
  10. 根据权利要求8所述的方法，其中，所述UE通过预配置信息获取所述sidelink重传配置信息，包括：
    所述UE从临近服务功能实体ProSe Function或V2X控制功能实体V2X control function获得包含所述sidelink重传配置信息的预配置信息。
  11. 根据权利要求8所述的方法，其中，所述UE接收对端UE发送的所述sidelink重传配置信息，包括：
    所述UE接收由所述对端UE发送的且承载有所述sidelink重传配置信息的PC5信令；和/或，
    所述UE接收由所述对端UE发送的且承载有所述sidelink反馈资源的sidelink控制信息SCI。
  12. 根据权利要求1所述的方法，其中，所述UE获取旁链sidelink重传配置信息之前，所述方法包括：
    所述UE发送sidelink重传指示信息给基站；其中，所述sidelink重传指示信息包括以下至少之一：业务/承载可靠性需求/等级，业务/承载丢包率要求，业务类型，优先级，延迟需求，sidelink重传需求指示，UE倾向的sidelink重传配置，UE能够支持的sidelink重传配置，sidelink资源请求和sidelink缓冲区状态上报。
  13. 根据权利要求8所述的方法，其中，在UE接收基站发送的sidelink重传配置信息之前或之后，所述方法还包括：
    所述UE接收所述基站配置的sidelink发送功率和/或sidelink调制编码样式MCS；其中，所述UE的发送功率和/或MCS由基站通过监听sidelink 上的发送及反馈，并根据接收UE反馈的NACK频次进行配置。
  14. 根据权利要求1至13任一项所述的方法，其中，所述UE根据所述sidelink重传配置信息执行sidelink反馈，包括以下至少一项：
    当所述UE被配置为sidelink HARQ反馈时，所述UE使用接收到的用于发送sidelink HARQ反馈的资源执行sidelink HARQ反馈；或者，
    当所述UE被配置为sidelink ARQ反馈时，所述UE根据接收到的RLC重传配置信息执行sidelink ARQ反馈。
  15. 根据权利要求1至13任一项所述的方法，其中，所述UE根据所述sidelink重传配置信息执行sidelink重传，包括以下至少一项：
    当所述UE选择或被配置为HARQ连续重传时，所述UE根据HARQ连续重传次数执行sidelink重传；
    当所述UE选择或被配置为ARQ连续重传时，所述UE根据ARQ连续重传次数执行sidelink重传；
    当所述UE选择或被配置为HARQ反馈与HARQ重传时，所述UE根据HARQ最大重传次数、sidelink发送功率、sidelink的MCS和冗余版本号中的一项或多项执行sidelink重传；
    当所述UE选择或被配置为HARQ重传以及ARQ反馈与ARQ重传的结合时，所述UE根据HARQ连续重传次数及RLC重传配置信息执行sidelink重传；
    当所述UE选择或被配置为HARQ反馈与HARQ重传以及ARQ反馈与ARQ重传的结合时，所述UE根据HARQ最大重传次数、sidelink发送功率、sidelink的MCS和冗余版本号及RLC重传配置信息中的一项或多项执行sidelink重传；
    所述UE使用预配置的sidelink重传配置信息执行sidelink重传。
  16. 根据权利要求1所述的方法，其中，在所述UE根据所述sidelink 重传配置信息执行sidelink重传之前或之后，所述方法还包括：
    所述UE调整sidelink发送功率和/或sidelink的MCS。
  17. 根据权利要求1所述的方法，其中，在所述UE根据sidelink重传配置信息执行sidelink重传之前，所述方法还包括：
    所述UE接收对端UE发送的sidelink HARQ反馈或sidelink ARQ反馈。
  18. 根据权利要求1所述的方法，其中，在所述UE根据sidelink重传配置信息执行sidelink重传之前或之后，所述方法还包括：
    所述UE接收所述基站发送的sidelink上丢失的数据包。
  19. 一种信息传输的方法，所述方法应用于车联网架构中的基站，所述方法包括：
    所述基站发送sidelink重传配置信息给UE。
  20. 根据权利要求19所述的方法，其中，所述基站发送sidelink重传配置信息给UE之前，所述方法还包括：
    所述基站接收所述UE发送的sidelink重传指示信息；
    其中，所述sidelink重传指示信息包括以下至少之一：
    业务/承载可靠性需求/等级，业务/承载丢包率要求，业务类型，优先级，延迟需求，sidelink重传需求指示，UE倾向的sidelink重传配置，UE能够支持的sidelink重传配置，sidelink资源请求和sidelink缓冲区状态上报。
  21. 根据权利要求19所述的方法，其中，所述基站发送sidelink重传配置信息给UE之后，所述方法还包括：
    所述基站监听sidelink上的发送及反馈；
    所述基站为发送信息的UE配置或修改sidelink发送功率和/或sidelink的MCS，或，所述基站发送sidelink上丢失的数据包给接收信息的UE。
  22. 根据权利要求21所述的方法，其中，所述基站发送sidelink上丢失的数据包给接收信息的UE，包括：
    所述基站监听sidelink上的发送及反馈；
    当监听到NACK反馈时，所述基站通过Uu接口的下行子帧或上行子帧中的sidelink资源发送丢失的数据包给接收信息的UE。
  23. 一种用户设备UE，所述UE包括：获取模块和执行模块；其中，
    所述获取模块，配置为获取旁链sidelink重传配置信息；
    所述执行模块，配置为根据所述sidelink重传配置信息执行sidelink反馈或sidelink重传。
  24. 根据权利要求23所述的UE，其中，所述获取模块，配置为接收基站发送的所述sidelink重传配置信息；或，
    配置为通过预配置信息获取所述sidelink重传配置信息；或，
    配置为接收对端UE发送的所述sidelink重传配置信息。
  25. 根据权利要求24所述的UE，其中，所述获取模块，配置为从系统广播消息中接收所述基站发送的所述sidelink重传配置信息；
    或，配置为从无线资源控制RRC专有信令中接收所述sidelink重传配置信息。
  26. 根据权利要求24所述的UE，其中，所述获取模块，配置为从临近服务功能实体ProSe Function或V2X控制功能实体V2X control function获得包含所述sidelink重传配置信息的预配置信息。
  27. 根据权利要求24所述的UE，其中，所述获取模块，配置为接收由所述对端UE发送的且承载有所述sidelink重传配置信息的PC5信令；
    和/或，配置为接收由所述对端UE发送的且承载有所述sidelink反馈资源的sidelink控制信息SCI。
  28. 根据权利要求23所述的UE，其中，所述UE还包括：
    第一发送模块，配置为发送sidelink重传指示信息给基站；其中，所述sidelink重传指示信息包括以下任意之一或组合：业务/承载可靠性需求/等 级，业务/承载丢包率要求，业务类型，优先级，延迟需求，sidelink重传需求指示，UE倾向的sidelink重传配置，UE能够支持的sidelink重传配置，sidelink资源请求和sidelink缓冲区状态上报。
  29. 根据权利要求23所述的UE，其中，所述UE还包括：
    第一接收模块，配置为接收所述基站配置的sidelink发送功率和/或sidelink调制编码样式MCS；其中，所述UE的发送功率和/或MCS由基站通过监听sidelink上的发送及反馈，并根据接收UE反馈的NACK频次进行配置。
  30. 根据权利要求23所述的UE，其中，
    所述执行模块，配置为当UE被配置为sidelink HARQ反馈时，使用接收到的用于发送sidelink HARQ反馈的资源执行sidelink HARQ反馈；或者，
    所述执行模块，配置为当UE被配置为sidelink ARQ反馈时，根据接收到的RLC重传配置信息执行sidelink ARQ反馈。
  31. 根据权利要求23所述的UE，其中，
    所述执行模块，配置为当所述UE选择或被配置为HARQ连续重传时，根据HARQ连续重传次数执行sidelink重传；或者，
    所述执行模块，配置为当所述UE选择或被配置为ARQ连续重传时，所述UE根据ARQ连续重传次数执行sidelink重传；或者，
    所述执行模块，配置为当所述UE选择或被配置为HARQ反馈与HARQ重传时，根据HARQ最大重传次数、sidelink发送功率、sidelink的MCS和冗余版本号中的一项或多项执行sidelink重传；或者，
    所述执行模块，配置为当所述UE选择或被配置为HARQ重传以及ARQ反馈与ARQ重传的结合时，根据HARQ连续重传次数及RLC重传配置信息执行sidelink重传；或者，
    所述执行模块，配置为当所述UE选择或被配置为HARQ反馈与HARQ 重传以及ARQ反馈与ARQ重传的结合时，根据HARQ最大重传次数、sidelink发送功率、sidelink的MCS、冗余版本号及RLC重传配置信息中的一项或多项执行sidelink重传；或者，
    所述执行模块，配置为使用预配置的sidelink重传配置信息执行sidelink重传。
  32. 根据权利要求23所述的UE，其中，所述UE还包括：调整模块，配置为调整sidelink发送功率和/或sidelink的MCS。
  33. 根据权利要求23所述的UE，其中，所述UE还包括：第二接收模块，配置为接收对端UE发送的sidelink HARQ反馈或sidelink ARQ反馈。
  34. 根据权利要求23所述的UE，其中，所述UE还包括：第三接收模块，配置为接收所述基站发送的sidelink上丢失的数据包。
  35. 一种基站，所述基站包括：
    第二发送模块，配置为发送sidelink重传配置信息给UE。
  36. 根据权利要求35所述的基站，其中，所述基站还包括：第四接收模块，配置为接收所述UE发送的sidelink重传指示信息；
    其中，所述sidelink重传指示信息包括以下至少之一：业务/承载可靠性需求/等级，业务/承载丢包率要求，业务类型，优先级，延迟需求，sidelink重传需求指示，UE倾向的sidelink重传配置，UE能够支持的sidelink重传配置，sidelink资源请求和sidelink缓冲区状态上报。
  37. 根据权利要求35所述的基站，其中，所述基站还包括：监听模块、配置模块和第三发送模块，
    其中，所述监听模块，配置为监听sidelink上的发送及反馈，并触发所述配置模块或所述第三发送模块；
    所述配置模块，配置为为发送信息的UE配置或修改sidelink发送功率和/或sidelink的MCS；
    所述第三发送模块，配置为发送sidelink上丢失的数据包给接收信息的UE。
  38. 根据权利要求37所述的基站，其中，所述监听模块，配置为监听sidelink上的发送及反馈，并当监听到NACK反馈时，触发所述第三发送模块；
    所述第三发送模块，配置为通过Uu接口的下行子帧或上行子帧中的sidelink资源发送丢失的数据包给接收信息的UE。
  39. 一种存储介质，所述存储介质包括存储的程序，其中，所述程序运行时执行权利要求1至18中任一项所述的信息传输的方法。
  40. 一种存储介质，所述存储介质包括存储的程序，其中，所述程序运行时执行权利要求19至22中任一项所述的信息传输的方法。
  41. 一种用户设备UE，其中，所述UE包括：第一通信接口、第一存储器、第一处理器和第一总线；其中，
    所述第一总线用于连接所述第一通信接口、所述第一处理器和所述第一存储器以及这些器件之间的相互通信；
    所述第一通信接口，配置为与外部网元进行数据传输；
    所述第一存储器，配置为存储指令和数据；
    所述第一处理器配置为执行所述指令时实现：获取旁链sidelink重传配置信息；以及，根据所述sidelink重传配置信息执行sidelink反馈或sidelink重传。
  42. 根据权利要求41所述的UE，其中，所述第一处理器，配置为：
    接收基站发送的sidelink重传配置信息；或，
    通过预配置信息获取sidelink重传配置信息；或，
    接收对端UE发送的sidelink重传配置信息。
  43. 根据权利要求41所述的UE，其中，所述第一处理器，还配置为 接收基站配置的sidelink发送功率和/或sidelink调制编码样式MCS；其中，所述UE的发送功率和/或MCS由基站通过监听sidelink上的发送及反馈，并根据接收UE反馈的NACK频次进行配置。
  44. 一种基站，所述基站包括：第二通信接口、第二存储器、第二处理器和第二总线；其中，
    所述第二总线用于连接所述第二通信接口、所述第二处理器和所述第二存储器以及这些器件之间的相互通信；
    所述第二通信接口，配置为与外部网元进行数据传输；
    所述第二存储器，配置为存储指令和数据；
    所述第二处理器，配置为执行所述指令时实现：发送sidelink重传配置信息给UE。
  45. 根据权利要求44所述的基站，其中，所述第二处理器，还配置为接收UE发送的sidelink重传指示信息；其中，所述sidelink重传指示信息包括以下至少之一：业务/承载可靠性需求/等级，业务/承载丢包率要求，业务类型，优先级，延迟需求，sidelink重传需求指示，UE倾向的sidelink重传配置，UE能够支持的sidelink重传配置，sidelink资源请求，sidelink缓冲区状态上报。
  46. 一种信息传输的系统，所述系统包括：车联网架构中的用户设备UE和基站，其中，
    所述UE，配置为获取旁链sidelink重传配置信息；
    以及，配置为根据所述sidelink重传配置信息执行sidelink反馈或sidelink重传；
    所述基站，配置为发送sidelink重传配置信息给所述UE。
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