WO2020133504A1 - 直连通信的数据传输方法、装置、设备及系统 - Google Patents

直连通信的数据传输方法、装置、设备及系统 Download PDF

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Publication number
WO2020133504A1
WO2020133504A1 PCT/CN2018/125825 CN2018125825W WO2020133504A1 WO 2020133504 A1 WO2020133504 A1 WO 2020133504A1 CN 2018125825 W CN2018125825 W CN 2018125825W WO 2020133504 A1 WO2020133504 A1 WO 2020133504A1
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Prior art keywords
terminal
harq feedback
directly connected
feedback information
time
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PCT/CN2018/125825
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English (en)
French (fr)
Inventor
赵群
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北京小米移动软件有限公司
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Publication date
Priority to PCT/CN2018/125825 priority Critical patent/WO2020133504A1/zh
Priority to SG11202106973UA priority patent/SG11202106973UA/en
Priority to RU2021120813A priority patent/RU2768371C1/ru
Priority to CN202210482305.5A priority patent/CN114845279A/zh
Priority to EP18944590.1A priority patent/EP3905569A4/en
Priority to BR112021012218-4A priority patent/BR112021012218A2/pt
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to CN201880002711.9A priority patent/CN109792594B/zh
Priority to KR1020217022899A priority patent/KR20210104860A/ko
Priority to JP2021536716A priority patent/JP7229362B2/ja
Publication of WO2020133504A1 publication Critical patent/WO2020133504A1/zh
Priority to US17/356,435 priority patent/US11778596B2/en
Priority to US18/231,177 priority patent/US20230379891A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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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
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
    • 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
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
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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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    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0042—Arrangements for allocating sub-channels of the transmission path intra-user or intra-terminal allocation
    • H—ELECTRICITY
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    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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    • H—ELECTRICITY
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    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
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    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
    • 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]

Definitions

  • the present disclosure relates to the field of communication technology, and in particular, to a data transmission method, device, device, and system for direct connection communication.
  • V2X Internet of Vehicles
  • in-vehicle devices and other devices can communicate directly through sidelinks.
  • Direct connection communication has the characteristics of short delay and low overhead.
  • the direct connection communication method based on the scheduling of the access network device includes: the access network device sends the scheduling information to the user equipment of the direct communication communication sending end (Downlink Control Information) (DCI): Terminal), the first terminal sends the directly connected data to the directly connected communication receiving end user equipment (abbreviated as: the second terminal) according to the scheduling information of the access network device and the sidelink.
  • DCI Downlink Control Information
  • LTE Long Term Evolution
  • HARQ hybrid Auto Repeat Request
  • Embodiments of the present disclosure provide a data transmission method, device, device, and system for direct communication.
  • the technical solution is as follows:
  • a data transmission method for direct connection communication which is used in a first terminal, and the method includes:
  • the reporting of the directly connected HARQ feedback information to the access network device includes:
  • the directly connected HARQ feedback information is reported to the access network device in a first time-frequency resource through a physical uplink control channel (Physical Uplink Control CHannel, PUCCH).
  • a physical uplink control channel Physical Uplink Control CHannel, PUCCH
  • the first time-frequency resource includes:
  • Pre-configured PUCCH resources for transmitting uplink HARQ feedback information of downlink data are pre-configured.
  • the pre-configured PUCCH resource used by the first terminal to report the directly connected HARQ feedback or,
  • the receiving directly connected HARQ feedback information fed back by the second terminal includes:
  • PSFCH Physical Sidelink Feedback Channel
  • the second time-frequency resource includes:
  • the pre-configured PSFCH resource used by the second terminal to send the directly connected HARQ feedback to the first terminal or,
  • the PSFCH resource mapped by the second terminal according to the fourth time-frequency resource used for transmitting the directly connected data or,
  • the PSFCH resource configured by the first terminal or the second terminal according to the first time-frequency resource and a preset timing relationship.
  • the method further includes:
  • the DCI carries data transmission parameters indicating the first time-frequency resource and the second time-frequency resource; the method further includes:
  • the data transmission parameters include at least one of the following parameters:
  • a first physical resource indicator where the first physical resource indicator is used to indicate a time domain and/or frequency domain resource used by the first terminal to report the directly connected HARQ feedback information
  • a first feedback timing indication where the first feedback timing indication is used to indicate a time interval between direct connection data transmission and direct connection HARQ feedback information reported by the first terminal;
  • a second physical resource indication where the second physical resource indication is used to indicate a time domain and/or frequency domain resource used by the second terminal to send the directly connected HARQ feedback information
  • a second feedback timing indication where the first feedback timing indication is used to indicate a time interval of direct connection HARQ feedback information corresponding to the second terminal feedback.
  • the method further includes:
  • first configuration signaling sent by the access network device, where the first configuration signaling is used to indicate a PUCCH resource set and/or a first time interval set corresponding to the directly connected HARQ feedback information;
  • the PUCCH resource set includes a plurality of configured PUCCH resources for reporting the directly connected HARQ feedback information
  • the first time interval set includes the configured direct connection data transmission and the corresponding direct report of the first terminal. The time interval of even HARQ feedback information.
  • the first configuration signaling is first radio resource control RRC signaling
  • the first RRC signaling includes a first newly added field and a second newly added field
  • the first newly added field is used for Indicating the PUCCH resource set
  • the second newly added field is used to indicate the first time interval set.
  • receiving a second configuration signaling sent by the access network device where the second configuration signaling is used to indicate a PSFCH resource set and/or a second time interval set corresponding to the directly connected HARQ feedback information;
  • the PSFCH resource set includes multiple PSFCH resources configured to report the directly connected HARQ feedback information
  • the second time interval set includes the configured directly connected data transmission corresponding to the second terminal feedback The time interval of directly connected HARQ feedback information.
  • the second configuration signaling is second radio resource control RRC signaling
  • the second RRC signaling includes a third newly added field and a fourth newly added field
  • the third newly added field is used for Indicating the PSFCH resource set
  • the fourth newly added field is used to indicate the second time interval set.
  • a data transmission method for direct connection communication which is used in an access network device.
  • the method includes:
  • the receiving the directly connected HARQ feedback information reported by the first terminal includes:
  • the first time-frequency resource includes:
  • Pre-configured PUCCH resources for transmitting uplink HARQ feedback information of downlink data are pre-configured.
  • the pre-configured PUCCH resource used by the first terminal to report the directly connected HARQ feedback or,
  • the method further includes:
  • the data transmission parameter Indicate a data transmission parameter to the first terminal in an explicit or implicit manner, and the data transmission parameter is used to indicate a first time-frequency resource and/or a second time-frequency resource.
  • the DCI carries data transmission parameters indicating the first time-frequency resource and the second time-frequency resource, and the DCI is used to instruct the first terminal to send the The data transmission parameters of the second time-frequency resource are described.
  • the second time-frequency resource includes:
  • the pre-configured PSFCH resource used by the second terminal to send the directly connected HARQ feedback to the first terminal or,
  • the PSFCH resource mapped by the second terminal according to the fourth time-frequency resource used for transmitting the directly connected data or,
  • the PSFCH resource configured by the first terminal or the second terminal according to the first time-frequency resource and a preset timing relationship.
  • the data transmission parameters include at least one of the following parameters:
  • a first physical resource indicator where the first physical resource indicator is used to indicate a time domain and/or frequency domain resource used by the first terminal to report the directly connected HARQ feedback information
  • a first feedback timing indication where the first feedback timing indication is used to indicate a time interval between direct connection data transmission and direct connection HARQ feedback information reported by the first terminal;
  • a second physical resource indication where the second physical resource indication is used to indicate a time domain and/or frequency domain resource used by the second terminal to send the directly connected HARQ feedback information
  • a second feedback timing indication where the first feedback timing indication is used to indicate a time interval of direct connection HARQ feedback information corresponding to the second terminal feedback.
  • the method further includes:
  • the first configuration signaling is used to indicate a PUCCH resource set and/or a first time interval set corresponding to the directly connected HARQ feedback information
  • the PUCCH resource set includes a plurality of configured PUCCH resources for reporting the directly connected HARQ feedback information
  • the first time interval set includes the configured direct connection data transmission and the corresponding direct report of the first terminal. The time interval of even HARQ feedback information.
  • the first configuration signaling is first radio resource control RRC signaling
  • the first RRC signaling includes a first newly added field and a second newly added field
  • the first newly added field is used for Indicating the PUCCH resource set
  • the second newly added field is used to indicate the first time interval set.
  • the method further includes:
  • the PSFCH resource set includes multiple PSFCH resources configured to report the directly connected HARQ feedback information
  • the second time interval set includes the configured directly connected data transmission corresponding to the second terminal feedback The time interval of directly connected HARQ feedback information.
  • the second configuration signaling is second radio resource control RRC signaling
  • the second RRC signaling includes a third newly added field and a fourth newly added field
  • the third newly added field is used for Indicating the PSFCH resource set
  • the fourth newly added field is used to indicate the second time interval set.
  • a data transmission apparatus for direct communication which is used in a first terminal, and the apparatus includes:
  • the sending module is configured to send the directly connected data to the second terminal through the directly connected link according to the DCI sent by the access network device;
  • a receiving module configured to receive direct-connected HARQ feedback information fed back by the second terminal, where the direct-connected HARQ feedback information is used to indicate a receiving state corresponding to the direct-connected data
  • the sending module is configured to report the directly connected HARQ feedback information to the access network device.
  • the sending module is further configured to report the directly connected HARQ feedback information to the access network device in the first time-frequency resource through the PUCCH.
  • the first time-frequency resource includes:
  • Pre-configured PUCCH resources for transmitting uplink HARQ feedback information of downlink data are pre-configured.
  • Pre-configured PUCCH resources used by the first terminal to report the directly connected HARQ feedback or,
  • the receiving module is further configured to receive the directly connected HARQ feedback information fed back by the second terminal in the second time-frequency resource through the PSFCH.
  • the second time-frequency resource includes:
  • the pre-configured PSFCH resource used by the second terminal to send the directly connected HARQ feedback to the first terminal or,
  • the PSFCH resource mapped by the second terminal according to the fourth time-frequency resource used for transmitting the directly connected data or,
  • the PSFCH resource configured by the first terminal or the second terminal according to the first time-frequency resource and a preset timing relationship.
  • the device further includes:
  • the processing module is configured to determine a data transmission parameter indicated by the access network device in an explicit manner or an implicit manner, where the data transmission parameter is used to indicate the first time-frequency resource and/or the second time-frequency resource.
  • the DCI carries data transmission parameters indicating the first time-frequency resource and the second time-frequency resource;
  • the sending module is further configured to send a data transmission parameter indicating the second time-frequency resource to the second terminal.
  • the data transmission parameters include at least one of the following parameters:
  • a first physical resource indicator where the first physical resource indicator is used to indicate a time domain and/or frequency domain resource used by the first terminal to report the directly connected HARQ feedback information
  • a first feedback timing indication where the first feedback timing indication is used to indicate a time interval between direct connection data transmission and direct connection HARQ feedback information reported by the first terminal;
  • a second physical resource indication where the second physical resource indication is used to indicate a time domain and/or frequency domain resource used by the second terminal to send the directly connected HARQ feedback information
  • a second feedback timing indication where the first feedback timing indication is used to indicate a time interval of direct connection HARQ feedback information corresponding to the second terminal feedback.
  • the device further includes:
  • the receiving module is further configured to receive first configuration signaling sent by the access network device, where the first configuration signaling is used to indicate the PUCCH resource set and/or the first corresponding to the directly connected HARQ feedback information A set of time intervals;
  • the PUCCH resource set includes a plurality of configured PUCCH resources for reporting the directly connected HARQ feedback information
  • the first time interval set includes the configured direct connection data transmission and the corresponding direct report of the first terminal. The time interval of even HARQ feedback information.
  • the first configuration signaling is first radio resource control RRC signaling
  • the first RRC signaling includes a first newly added field and a second newly added field
  • the first newly added field is used for Indicating the PUCCH resource set
  • the second newly added field is used to indicate the first time interval set.
  • the device further includes:
  • the receiving module is further configured to receive second configuration signaling sent by the access network device, where the second configuration signaling is used to indicate the PSFCH resource set and/or the first corresponding to the directly connected HARQ feedback information Two time interval collection;
  • the PSFCH resource set includes multiple PSFCH resources configured to report the directly connected HARQ feedback information
  • the second time interval set includes the configured directly connected data transmission corresponding to the second terminal feedback The time interval of directly connected HARQ feedback information.
  • the second configuration signaling is second radio resource control RRC signaling
  • the second RRC signaling includes a third newly added field and a fourth newly added field
  • the third newly added field is used for Indicating the PSFCH resource set
  • the fourth newly added field is used to indicate the second time interval set.
  • a data transmission apparatus for direct communication which is used in an access network device, and the apparatus includes:
  • a sending module configured to send DCI to the first terminal, where the DCI is used to instruct the first terminal to send direct-connected data to the second terminal through a direct-connected link; receive direct-connected HARQ feedback fed back by the second terminal Information, the directly connected HARQ feedback information is used to indicate the reception status corresponding to the directly connected data; report the directly connected HARQ feedback information to the access network device;
  • the receiving module is configured to receive the directly connected HARQ feedback information reported by the first terminal.
  • the receiving module is further configured to receive the directly connected HARQ feedback information sent by the first terminal in the first time-frequency resource through the PUCCH.
  • the first time-frequency resource includes:
  • Pre-configured PUCCH resources for transmitting uplink HARQ feedback information of downlink data are pre-configured.
  • Pre-configured PUCCH resources used by the first terminal to report the directly connected HARQ feedback or,
  • the device further includes:
  • the sending module is further configured to indicate a data transmission parameter to the first terminal in an explicit or implicit manner, and the data transmission parameter is used to indicate a first time-frequency resource and/or a second time-frequency resource.
  • the DCI carries data transmission parameters indicating the first time-frequency resource and the second time-frequency resource, and the DCI is used to instruct the first terminal to send the second terminal to indicate The data transmission parameters of the second time-frequency resource are described.
  • the second time-frequency resource includes:
  • the pre-configured PSFCH resource used by the second terminal to send the directly connected HARQ feedback to the first terminal or,
  • the PSFCH resource mapped by the second terminal according to the fourth time-frequency resource used for transmitting the directly connected data or,
  • the PSFCH resource configured by the first terminal or the second terminal according to the first time-frequency resource and a preset timing relationship.
  • the data transmission parameters include at least one of the following parameters:
  • a first physical resource indicator where the first physical resource indicator is used to indicate a time domain and/or frequency domain resource used by the first terminal to report the directly connected HARQ feedback information
  • a first feedback timing indication where the first feedback timing indication is used to indicate a time interval between direct connection data transmission and direct connection HARQ feedback information reported by the first terminal;
  • a second physical resource indication where the second physical resource indication is used to indicate a time domain and/or frequency domain resource used by the second terminal to send the directly connected HARQ feedback information
  • a second feedback timing indication where the first feedback timing indication is used to indicate a time interval of direct connection HARQ feedback information corresponding to the second terminal feedback.
  • the device further includes:
  • the sending module is further configured to send first configuration signaling to the first terminal, where the first configuration signaling is used to indicate a PUCCH resource set and/or a first time corresponding to the directly connected HARQ feedback information Interval set
  • the PUCCH resource set includes a plurality of configured PUCCH resources for reporting the directly connected HARQ feedback information
  • the first time interval set includes the configured direct connection data transmission and the corresponding direct report of the first terminal. The time interval of even HARQ feedback information.
  • the first configuration signaling is first radio resource control RRC signaling
  • the first RRC signaling includes a first newly added field and a second newly added field
  • the first newly added field is used for Indicating the PUCCH resource set
  • the second newly added field is used to indicate the first time interval set.
  • the device further includes:
  • the sending module is further configured to send second configuration signaling to the first terminal and/or the second terminal, where the second configuration signaling is used to indicate the PSFCH corresponding to the directly connected HARQ feedback information Resource collection and/or second time interval collection;
  • the PSFCH resource set includes multiple PSFCH resources configured to report the directly connected HARQ feedback information
  • the second time interval set includes the configured directly connected data transmission corresponding to the second terminal feedback The time interval of directly connected HARQ feedback information.
  • the second configuration signaling is second radio resource control RRC signaling
  • the second RRC signaling includes a third newly added field and a fourth newly added field
  • the third newly added field is used for Indicating the PSFCH resource set
  • the fourth newly added field is used to indicate the second time interval set.
  • a terminal includes:
  • a transceiver connected to the processor
  • Memory for storing processor executable instructions
  • the processor is configured to load and execute the executable instructions to implement the steps of the data transmission method of direct connection communication as described in the first aspect or any possible implementation manner of the first aspect.
  • an access network device includes:
  • a transceiver connected to the processor
  • Memory for storing processor executable instructions
  • the processor is configured to load and execute the executable instructions to implement the steps of the data transmission method of the direct communication as described in the second aspect or any possible implementation manner of the second aspect.
  • a data transmission system for direct communication includes a terminal and an access network device;
  • the terminal is the data transmission device according to the third aspect or any possible implementation manner of the third aspect;
  • the access network is the data transmission device described in the fourth aspect or any possible implementation manner of the fourth aspect.
  • a data transmission system for direct communication includes a terminal and an access network device;
  • the data transmission device according to the fifth aspect of the terminal.
  • the access network is the data transmission device according to the sixth aspect.
  • a computer-readable storage medium in which at least one instruction, at least one program, code set, or instruction set is stored, and the at least one instruction, The at least one program, the code set or the instruction set is loaded and executed by the processor to implement the data transmission method of the direct connection communication described in the first aspect or any possible implementation manner of the first aspect Steps, or the steps of implementing the data transmission method of direct connection communication as described in any possible implementation manner of the second aspect or the first aspect.
  • the directly connected HARQ feedback information is used to indicate the reception status corresponding to the directly connected data; connect the directly connected HARQ The feedback information is reported to the access network device; so that in the direct connection communication scenario based on the scheduling of the access network device, even if the first terminal and the second terminal may be under different access network device coverage or network coverage
  • the directly connected HARQ feedback information can also be transmitted from the second terminal to the first terminal, and then reported by the first terminal to the access network device, which ensures the success rate of information transmission and reception in the direct connection communication scenario, and helps To improve the efficiency of data transmission.
  • FIG. 1 is a schematic diagram of a network architecture to which an embodiment of the present disclosure may be applicable;
  • Fig. 2 is a flowchart of a data transmission method for direct communication according to an exemplary embodiment
  • Fig. 3 is a flowchart of a data transmission method for direct communication according to another exemplary embodiment
  • Fig. 4 is a block diagram of a data transmission device for direct communication according to an exemplary embodiment
  • Fig. 5 is a block diagram of a data transmission device for direct communication according to another exemplary embodiment
  • Fig. 6 is a block diagram of a terminal according to an exemplary embodiment
  • Fig. 7 is a block diagram of an access network device according to an exemplary embodiment.
  • the network architecture and business scenarios described in the embodiments of the present disclosure are to more clearly explain the technical solutions of the embodiments of the present disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. And the emergence of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.
  • FIG. 1 shows a schematic diagram of a network architecture to which the embodiments of the present disclosure may be applicable.
  • the network architecture may be a network architecture of a C-V2X system.
  • C refers to cellular (English: Cellular)
  • C-V2X system is based on 3G, 4G or 5G cellular network communication system evolution formed by the vehicle-mounted wireless communication system.
  • the network architecture may include: a core network 11, an access network 12, a terminal 13, and a vehicle 14.
  • the core network 11 includes several core network devices.
  • the function of the core network equipment is mainly to provide user connections, manage users, and complete bearers for services, as an interface provided by the bearer network to an external network.
  • the core network of the Long Term Evolution (LTE) system may include Mobility Management Entity (MME), Serving Gateway (Serving Gateway, S-GW), PDN Gateway (PDN Gateway, P-GW) Other equipment.
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • PDN Gateway PDN Gateway
  • the core network of the 5G NR system may include access and mobility management (Access and Mobility Management Function, AMF) entities, user plane function (User Plane Function, UPF) entities, and session management function (Session Management Function, SMF) entities Other equipment.
  • AMF Access and Mobility Management Function
  • UPF User Plane Function
  • Session Management Function Session Management Function
  • the access network 12 includes several access network devices 120.
  • the access network device 120 and the core network device 110 communicate with each other through some interface technology, such as the S1 interface in the LTE system and the NG interface in the 5G NR system.
  • the access network device 120 may be a base station (Base), which is a device deployed in the access network to provide a wireless communication function for the terminal.
  • the base station may include various forms of macro base stations, micro base stations, relay stations, access points, and so on.
  • the names of devices with base station functions may be different.
  • eNodeB or eNB in the LTE system, it is called eNodeB or eNB; in the 5G NR system, it is called gNodeB or gNB.
  • the name "base station” may change.
  • the above devices that provide wireless communication functions for terminals are collectively referred to as access network equipment.
  • the terminal 13 may include various handheld devices with wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (User Equipment, UE), mobile stations ( Mobile Station, MS), terminal (English: terminal) and so on. For convenience of description, the devices mentioned above are collectively referred to as terminals.
  • the access network device 120 and the terminal 13 communicate with each other through a certain air interface technology, such as a Uu interface.
  • the vehicle 14 may be an autonomous vehicle or a non-autonomous vehicle.
  • the vehicle 14 is equipped with a vehicle-mounted device, and the vehicle 14 communicates with other vehicles, terminals 13 or other devices through the vehicle-mounted device, such as a road side unit (RSU).
  • the in-vehicle device may also be called an in-vehicle terminal, an in-vehicle communication device, or other names, which are not limited in the embodiments of the present disclosure.
  • the vehicle-mounted device may be a device integrated in a telematics box (T-BOX) or a device separated from the vehicle body.
  • T-BOX telematics box
  • the vehicle-mounted device may be assembled in the vehicle 14 before the vehicle 14 is shipped, or may be assembled in the vehicle 14 after the vehicle 14 is shipped.
  • the vehicle-mounted device of the vehicle 14 and other devices can communicate with each other through a directly connected communication interface (such as a PC5 interface). Accordingly, the communication link established based on the directly connected communication interface It can be called a direct link or a sidelink.
  • the vehicle-mounted device of the vehicle 14 and other devices can also be transferred through the access network 12 and the core network 11, that is, the communication link between the terminal 13 and the access network device 120 in the original cellular network is used for communication .
  • communication based on direct communication interface has the characteristics of short time delay and low overhead, and is suitable for communication between vehicle-mounted equipment and other peripheral devices with close geographical location.
  • the above network architecture shown in FIG. 1 can implement V2X service scenarios, and the above network architecture may also include devices such as RSU, V2X application server, and V2X control function node, which are not limited in the embodiments of the present disclosure.
  • the technical solutions described in the embodiments of the present disclosure may be applicable to the 5G NR system, and may also be applicable to the subsequent evolution system of the 5G NR system.
  • a data transmission method of direct connection communication is provided to solve the problem of resource conflicts.
  • the first terminal and the second terminal are V2X service scenarios, and are devices at both ends of the direct connection communication, and the first terminal and the second terminal may be established through a direct connection communication interface (such as a PC5 interface) Side link, and then perform user plane data and control plane signaling interaction through this side link.
  • the first terminal may be the vehicle-mounted device of the vehicle 14 in the network architecture shown in FIG. 1, and the second terminal may be the vehicle-mounted device of another vehicle, or may be the terminal 13 or the RSU.
  • the first terminal may be the terminal 13 in the network architecture shown in FIG. 1, and the second terminal may be another terminal, or may be an on-board device or RSU of the vehicle 14.
  • the same device such as the same in-vehicle device or the same terminal
  • it can be used as the first terminal in some scenarios and can also be used as the second terminal in other scenarios.
  • the first terminal is also referred to as a user equipment of a directly connected communication transmitting end
  • the second terminal is also referred to as a user equipment of a directly connected communication receiving end.
  • Fig. 2 is a flowchart of a data transmission method for direct communication according to an exemplary embodiment. This method can be applied to the network architecture shown in FIG. 1. The method may include the following steps.
  • step 201 the access network device sends DCI to the first terminal.
  • the access network device sends DCI to the first terminal, and the DCI carries data transmission parameters.
  • step 202 the first terminal sends direct connection data to the second terminal through the direct connection link according to DCI.
  • the first terminal sends direct connection data to the second terminal through the direct connection link according to the DCI sent by the access network device.
  • the first terminal receives the DCI sent by the access network device through the downlink channel, and sends the direct connection data to the second terminal through the direct connection link according to the data transmission parameter in the DCI.
  • the DCI is a DCI used for scheduling direct connection data transmission.
  • the downlink channel includes a physical downlink control channel (Physical Downlink Control Channel, PDCCH).
  • PDCCH Physical Downlink Control Channel
  • the data transmission parameters are used to indicate time-frequency resources and/or modulation and coding methods.
  • the first terminal receives the DCI sent by the access network device through the downlink channel, and according to the time-frequency resources and/or modulation and coding methods indicated by the data transmission parameters in the DCI, sends the direct terminal to the second terminal through the direct link Even the data.
  • the directly connected data is physical layer data sent by the first terminal to the second terminal through the directly connected link.
  • the first terminal uses the fourth time-frequency resource of the direct connection link to send the direct connection data to the second terminal.
  • the fourth time-frequency resource is a predefined or pre-configured time-frequency resource.
  • the first terminal may also send control information to the second terminal before the direct connection data is sent or at the same time as the direct connection data is sent, where the control information is used to indicate information about receiving physical layer data.
  • the receiving related information includes: a time domain position and/or a frequency domain position of a fourth time-frequency resource used to carry physical layer data.
  • the receiving related information further includes: modulation and coding mode (Modulation and Coding Scheme, MCS) of the physical layer data, hybrid automatic repeat request process identification process identification (Hybrid ARQ Process Number, HARQ-ID), new data Indication (New-Data Indicator, NDI) and other information.
  • MCS Modulation and Coding Scheme
  • step 203 the second terminal feeds back the directly connected HARQ feedback information to the first terminal.
  • the second terminal receives the directly connected data sent by the first terminal.
  • the second terminal receives the direct connection data sent by the first terminal using the fourth time-frequency resource of the direct connection link.
  • the second terminal feeds back the directly connected HARQ feedback information to the first terminal, and the directly connected HARQ feedback information includes HARQ feedback bits corresponding to at least one directly connected data transmission.
  • the number of HARQ feedback bits corresponding to a direct connection data transmission is 1 bit (English: bit) or 2 bits.
  • the directly connected HARQ feedback information is used to indicate the reception status corresponding to the directly connected data.
  • the reception status corresponding to the directly connected data includes: an acknowledged reception status (Acknowledgement, ACK) or a non-acknowledged reception status (Non-Acknowledgement, NACK).
  • ACK is used to indicate that the directly connected data is correctly received by the second terminal.
  • NACK includes an unreceived state and/or an incorrectly received state.
  • the unreceived state is used to indicate that the directly connected data is not received by the second terminal;
  • the incorrectly received state is used to indicate that although the directly connected data is received by the second terminal, the directly connected data received by the second terminal is transmitted with the first terminal
  • the directly connected data is different, that is, the wrong directly connected data is received.
  • the second terminal After receiving the directly connected data, the second terminal processes the received directly connected data, for example, the second terminal performs demodulation and decoding on the directly connected data. During the processing, the second terminal will determine the reception status of the directly connected data.
  • the second terminal sends direct connection HARQ feedback information to the first terminal through the direct connection channel.
  • the direct connection channel is PSFCH.
  • step 204 the first terminal receives direct HARQ feedback information fed back by the second terminal.
  • the first terminal receives the directly connected HARQ feedback information sent by the second terminal through the PSFCH.
  • the direct connection communication scenario of the first terminal and the second terminal in the embodiment of the present disclosure is based on the direct connection communication scenario scheduled by the access network device. That is, the first terminal performs data transmission based on the scheduling of the access network device.
  • the direct connection HARQ feedback information corresponding to the direct connection data needs to be transmitted from the second terminal back to the access network device to facilitate access
  • the network access device schedules data retransmission or new data transmission.
  • the directly connected HARQ feedback information needs to be transmitted from the second terminal to the first terminal first, and then The first terminal reports to the access network device.
  • step 205 the first terminal reports the directly connected HARQ feedback information to the access network device.
  • the first terminal reports the directly connected HARQ feedback information to the access network device on the physical layer uplink channel of the target time unit.
  • the target time unit refers to a time unit corresponding to when the terminal device needs to send uplink HARQ feedback bits and directly connected HARQ feedback information.
  • the target time unit is a symbol (English: symbol), b symbol group (English: symbol), c time slot (English: slot) or d subframe (English: subframe), a, b , C and d are positive integers, which are not limited in this embodiment.
  • the physical layer uplink channel is an uplink channel used to send directly connected HARQ feedback information to the access network device.
  • the physical layer uplink channel is an uplink channel based on the first communication protocol or the second communication protocol.
  • the first communication protocol includes the LTE protocol
  • the second communication protocol includes the NR protocol.
  • the physical layer uplink channel is PUCCH.
  • the PUCCH channel format is any one of PUCCH format 1, PUCCH format 1a, PUCCH format 1b, PUCCH format 2, PUCUC format 2a, PUCCH format 2b, PUCCH format 3, PUCCH format 4 and PUCCH format 5.
  • step 206 the access network device receives the directly connected HARQ feedback information reported by the first terminal.
  • the direct connection data is sent to the second terminal through the direct connection through the first terminal; the direct connection HARQ feedback information fed back by the second terminal is received, and the direct connection HARQ feedback information is used to indicate the direct connection data correspondence Receiving status of the direct connection; reporting the directly connected HARQ feedback information to the access network device; making the direct connection communication scenario based on the access network device scheduling, even if the first terminal and the second terminal are in different access network device coverage Below, or outside the network coverage, the directly connected HARQ feedback information can also be transmitted from the second terminal to the first terminal, and then reported by the first terminal to the access network device, ensuring the information in the directly connected communication scenario The success rate of sending and receiving, and help to improve the efficiency of data transmission.
  • First time-frequency resource The first terminal reports the time-domain and/or frequency-domain resources used by the directly connected HARQ feedback information to the access network device.
  • Second time-frequency resource the time-domain and/or frequency-domain resource used by the second terminal to send the directly connected HARQ feedback information to the first terminal.
  • Third time-frequency resource the access network device sends the time-domain and/or frequency-domain resource used by the DCI to the first terminal.
  • Fourth time-frequency resources time-domain and/or frequency-domain resources used by the first terminal to send directly connected data to the second terminal.
  • Fig. 3 is a flow chart showing a data transmission method of direct communication according to an exemplary embodiment. This method can be applied to the network architecture shown in FIG. 1. The method may include the following steps.
  • step 301 the access network device sends first configuration signaling to the first terminal.
  • the first configuration signaling is used to indicate the PUCCH resource set and/or the first time interval set corresponding to the directly connected HARQ feedback information.
  • the PUCCH resource set includes multiple PUCCH resources configured to report directly connected HARQ feedback information
  • the first time interval set includes the configured time interval between the directly connected data transmission and the corresponding directly connected HARQ feedback information reported by the first terminal.
  • the first configuration signaling is the first RRC signaling
  • the first RRC signaling includes a first newly added field and a second newly added field
  • the first newly added field is used to indicate the PUCCH resource set
  • the second newly added field The field is used to indicate the first set of time intervals.
  • the first newly added field resourceSetSL in the first RRC signaling PUCCH-config is dedicated to configuring PUCCH resources used by directly connected HARQ feedback information; the second newly added field Sl-DataToUL-ACK is dedicated to configuring the first A collection of time intervals.
  • step 302 the access network device sends second configuration signaling to the second terminal.
  • the second configuration signaling is used to indicate the PSFCH resource set and/or the second time interval set corresponding to the directly connected HARQ feedback information.
  • the PSFCH resource set includes multiple PSFCH resources configured to report directly connected HARQ feedback information
  • the second time interval set includes the configured time interval between the directly connected data transmission and the directly connected HARQ feedback information corresponding to the second terminal feedback.
  • the access network device sends the second configuration signaling to the first terminal and/or the second terminal.
  • the access network device sends the second configuration signaling to the first terminal and the second terminal, respectively.
  • both the first terminal and the second terminal receive the second configuration signaling sent by the access network device.
  • the second configuration signaling is second RRC signaling.
  • the second RRC signaling includes a third newly added field and a fourth newly added field.
  • the third newly added field is used to indicate the PSFCH resource set, and the fourth newly added field
  • the field is used to indicate the second set of time intervals.
  • the third newly added field resourceSetSL in the second RRC signaling PSFCH-config is dedicated to configuring PSFCH resources used by directly connected HARQ feedback information; the fourth newly added field Sl-DataToUL-ACK is dedicated to configuring the first Two time interval collection.
  • the access network device sends the second configuration signaling to the first terminal, and the first terminal forwards the second configuration signaling to the second terminal.
  • the access network device sends the second configuration signaling to the second terminal, and the second terminal sends the second configuration signaling to the first terminal.
  • This embodiment does not limit the implementation manner of the access network device sending the second configuration signaling to the second terminal.
  • step 303 the access network device sends DCI to the first terminal.
  • DCI is used to instruct the first terminal to send direct connection data to the second terminal through the direct connection link.
  • DCI is used to instruct the first terminal to send the fourth time-frequency resource of the directly connected data to the second terminal.
  • the access network device indicates the data transmission parameters to the first terminal in an explicit or implicit manner, and the data transmission parameters are used to indicate the first time-frequency resource and/or the second time-frequency resource.
  • the way in which the access network device indicates the data transmission parameters to the first terminal in an explicit manner includes: the access network device sends DCI to the first terminal, and the DCI also carries a first time-frequency resource and a second time-frequency resource Data transmission parameters.
  • the data transmission parameters include at least one of the following parameters:
  • the first physical resource indicator is used to indicate a time domain and/or frequency domain resource used by the first terminal to report the directly connected HARQ feedback information.
  • the first feedback timing indication is used to indicate a time interval between direct connection data transmission and direct connection HARQ feedback information reported by the first terminal.
  • the second physical resource indicator is used to indicate time-domain and/or frequency-domain resources used by the second terminal to send directly connected HARQ feedback information.
  • the first feedback timing indication is used to indicate a time interval for direct connection data transmission and direct connection HARQ feedback information corresponding to the second terminal feedback.
  • the first physical resource indicator is PUCCH resource indicator
  • the first physical resource indicator is used for the first time domain resource
  • the first feedback timing indicator is PSSCH-to-ULHARQ_feedback timing indicator.
  • the second physical resource indicator is PFSCH resource indicator
  • the second feedback timing indicator is PSSCH-to-SLHARQ_feedback timing indicator.
  • the time domain is the length of the time domain and the specific time domain symbol occupied in the time slot.
  • the time-domain and/or frequency-domain resources used by the first terminal to report the directly connected HARQ feedback information are the first time-frequency resources, and the first time-frequency resources are configured by the access network device for the directly-connected HARQ feedback information.
  • the time-domain and/or frequency-domain resources used by the second terminal to send the directly connected HARQ feedback information are the second time-frequency resources, and the second time-frequency resources are configured by the access network device for the directly-connected HARQ feedback information.
  • step 304 the first terminal sends the direct connection data and the SCI to the second terminal through the direct connection link according to DCI.
  • the first terminal determines the data transmission parameters indicated by the access network device in an explicit or implicit manner according to the DCI, and the data transmission parameters are used to indicate the first time-frequency resource and/or the second time-frequency resource.
  • the access network device When the access network device indicates the data transmission parameters to the first terminal in an explicit manner, the corresponding first terminal receives the DCI sent by the access network device, and the DCI carries the first time-frequency resource and the second time-frequency resource The data transmission parameter of the data transmission parameter is sent to the second terminal to indicate the second time-frequency resource.
  • the first terminal when DCI is used to indicate the first time-frequency resource, the second time-frequency resource, and the fourth time-frequency resource, the first terminal prepares the report of the directly connected HARQ feedback information according to the first time-frequency resource, and uses the directly connected
  • the fourth time-frequency resource sends the directly connected data and the SCI to the second terminal, where the SCI carries data transmission parameters indicating the second time-frequency resource.
  • step 305 the second terminal feeds back directly connected HARQ feedback information in the second time-frequency resource through the PSFCH according to the directly connected data and the SCI.
  • the second time-frequency resource may be explicitly configured by the access network device or implicitly indicated by the access network device.
  • the second time-frequency resource is explicitly configured by the access network device, and the second time-frequency resource includes: a pre-configured PSFCH used by the second terminal to send the directly connected HARQ feedback to the first terminal Resources.
  • the second terminal receives the directly connected data and the SCI sent by the first terminal, and determines the second time-frequency resource indicated by the SCI.
  • the second time-frequency resource is implicitly indicated by the access network device, that is, the second time-frequency resource is obtained by the first terminal or the second terminal according to a defined mapping rule.
  • the second time-frequency resource includes: the PSFCH resource mapped by the second terminal according to the fourth time-frequency resource used to transmit the direct connection data; or, the second terminal according to the first time used by the first terminal to report the direct connection HARQ feedback information PSFCH resources obtained by frequency resource mapping.
  • mapping rules are predefined or pre-configured.
  • the mapping rule of the second time-frequency resource and the fourth time-frequency resource includes: the frequency domain starting position of the second time-frequency resource and the fourth time-frequency resource are the same, and the time unit used by the second time-frequency resource is the fourth The Kth time unit after the time unit used by the time-frequency resource.
  • K is a positive integer.
  • the mapping rule between the second time-frequency resource and the first time-frequency resource includes: the second time-frequency resource and the first time-frequency resource have the same frequency domain starting position, and the time unit used by the second time-frequency resource is The Mth time unit before the time unit used by the first time-frequency resource.
  • M is a positive integer.
  • the manner of obtaining the second time-frequency resource according to the mapping rule is not limited.
  • the second time-frequency resource is determined autonomously by the first terminal or the second terminal.
  • the second time-frequency resource includes: the PSFCH resource configured by the first terminal or the second terminal according to the first time-frequency resource and the preset timing relationship.
  • the first terminal or the second terminal autonomously determines the second time-frequency resource, and the second time-frequency resource meets the time delay requirement for the first terminal to report the directly connected HARQ feedback information.
  • the preset timing relationship includes that the time unit used by the second time-frequency resource is earlier than the time unit used by the first time-frequency resource, and the absolute value of the difference between the two is greater than the transmission threshold.
  • the directly connected HARQ feedback information is used to indicate the reception status corresponding to the directly connected data.
  • the reception status corresponding to the directly connected data includes: ACK or NACK.
  • step 306 the first terminal reports the directly connected HARQ feedback information to the access network device.
  • the first terminal receives the directly connected HARQ feedback information fed back by the second terminal, and reports the directly connected HARQ feedback information to the access network device through the PUCCH in the first time-frequency resource.
  • the first time-frequency resource may be explicitly configured by the access network device, or may be implicitly indicated by the access network device.
  • the second time-frequency resource is explicitly configured by the access network device, and the first time-frequency resource includes: a pre-configured PUCCH resource for transmitting uplink HARQ feedback information of downlink data; or , The pre-configured first terminal reports the PUCCH resources used by the directly connected HARQ feedback.
  • the first terminal reuses the pre-configured PUCCH resources of uplink HARQ feedback information for transmitting downlink data to report directly connected HARQ feedback information to the access network device.
  • the DCI received by the first terminal carries data transmission parameters indicating the first time-frequency resource
  • the second terminal reports the directly connected HARQ feedback information to the access network device in the indicated first time-frequency resource .
  • the first time-frequency resource is implicitly indicated by the access network device, that is, the first time-frequency resource is obtained by the first terminal according to the defined mapping rule.
  • the first time-frequency resource includes: a PUCCH resource mapped according to a third time-frequency resource used for transmitting DCI.
  • the first terminal receives the DCI sent by the access network device, and determines the first time-frequency resource based on the mapping relationship according to the third time-frequency resource used by the DCI transmission.
  • mapping rules are predefined or pre-configured.
  • the mapping rule of the first time-frequency resource and the third time-frequency resource includes: the first time-frequency resource and the third time-frequency resource have the same frequency domain starting position, and the time unit used by the first time-frequency resource is the third The Nth time unit after the time unit used by the time-frequency resource.
  • N is a positive integer.
  • the first terminal sends the directly connected HARQ feedback information indicating the NACK to the access network device.
  • step 307 the access network device receives the directly connected HARQ feedback information reported by the first terminal.
  • the access network device receives the directly connected HARQ feedback information reported by the first terminal in the first time-frequency resource through the PUCCH.
  • the first time-frequency resource also includes the pre-configured PUCCH resource for transmitting uplink HARQ feedback information of the downlink data, so that the first terminal can report directly to the access network device through the reused PUCCH resource.
  • Connect HARQ feedback information so that the access network device does not need to configure a dedicated PUCCH resource set for directly connected HARQ feedback information, which saves the signaling interaction process between the access network device and the first terminal, and also improves the transmission Utilization of PUCCH resources of uplink HARQ feedback information of downlink data.
  • the access network device also explicitly indicates data transmission parameters to the first terminal, and the data transmission parameters are used to indicate the first time-frequency resource and/or the second time-frequency resource, so that the first terminal Or the second terminal can quickly determine the time-frequency resource for transmitting the directly connected HARQ feedback information, which improves the efficiency of HARQ feedback.
  • the access network device also implicitly indicates data transmission parameters to the first terminal, and the data transmission parameters are used to indicate the first time-frequency resource and/or the second time-frequency resource;
  • the signaling interaction between the device, the first terminal, and the second terminal does not need to carry an explicit field indicating the time-frequency resource of the directly connected HARQ feedback information.
  • the first terminal or the second terminal can decide according to the mapping rule or autonomously Time-frequency resources for transmitting directly connected HARQ feedback information, thereby reducing the amount of data that needs to be carried during the signaling interaction between the access network device, the first terminal, and the second terminal.
  • Fig. 4 is a block diagram of a data transmission device for direct communication according to an exemplary embodiment.
  • the device has the function of realizing the above-mentioned method example on the first terminal side, and the function may be implemented by hardware, or may be implemented by hardware executing corresponding software.
  • the apparatus 400 may include: a sending module 410, a processing module 420, and a receiving module 430.
  • the sending module 410 is configured to send direct connection data to the second terminal through the direct connection link according to the DCI sent by the access network device;
  • the receiving module 430 is configured to receive the directly connected HARQ feedback information fed back by the second terminal, and the directly connected HARQ feedback information is used to indicate the receiving state corresponding to the directly connected data;
  • the sending module 410 is configured to report directly connected HARQ feedback information to the access network device.
  • the sending module 410 is further configured to report the directly connected HARQ feedback information to the access network device through the PUCCH in the first time-frequency resource.
  • the first time-frequency resource includes:
  • Pre-configured PUCCH resources for transmitting uplink HARQ feedback information of downlink data are pre-configured.
  • the pre-configured first terminal reports the PUCCH resources used by the directly connected HARQ feedback; or,
  • the receiving module 430 is further configured to receive directly connected HARQ feedback information fed back by the second terminal in the second time-frequency resource through the PSFCH.
  • the second time-frequency resource includes:
  • the pre-configured second terminal sends the PSFCH resource used by the directly connected HARQ feedback to the first terminal; or,
  • the second terminal maps the PSFCH resource according to the fourth time-frequency resource used to transmit the directly connected data; or,
  • the second terminal according to the PSFCH resource obtained by mapping the first time-frequency resource used by the first terminal to report the directly connected HARQ feedback information; or,
  • the PSFCH resource configured by the first terminal or the second terminal according to the first time-frequency resource and the preset timing relationship.
  • the device also includes:
  • the processing module 420 is configured to determine data transmission parameters indicated by the access network device in an explicit or implicit manner, and the data transmission parameters are used to indicate the first time-frequency resource and/or the second time-frequency resource.
  • the DCI carries data transmission parameters indicating the first time-frequency resource and the second time-frequency resource;
  • the sending module 410 is further configured to send a data transmission parameter indicating the second time-frequency resource to the second terminal.
  • the data transmission parameters include at least one of the following parameters:
  • a first physical resource indicator where the first physical resource indicator is used to represent time-domain and/or frequency-domain resources used by the first terminal to report directly connected HARQ feedback information;
  • a first feedback timing indication where the first feedback timing indication is used to indicate a time interval between direct connection data transmission and direct connection HARQ feedback information reported by the first terminal;
  • a second physical resource indicator where the second physical resource indicator is used to indicate time-domain and/or frequency-domain resources used by the second terminal to send directly connected HARQ feedback information
  • the first feedback timing indication is used to indicate a time interval for direct connection data transmission and direct connection HARQ feedback information corresponding to the second terminal feedback.
  • the device also includes:
  • the receiving module 430 is further configured to receive the first configuration signaling sent by the access network device, where the first configuration signaling is used to indicate the PUCCH resource set and/or the first time interval set corresponding to the directly connected HARQ feedback information;
  • the PUCCH resource set includes a plurality of configured PUCCH resources for reporting directly connected HARQ feedback information
  • the first time interval set includes a configured time interval between the directly connected data transmission and the corresponding directly connected HARQ feedback information reported by the first terminal.
  • the first configuration signaling is first radio resource control RRC signaling.
  • the first RRC signaling includes a first newly added field and a second newly added field.
  • the first newly added field is used to indicate the PUCCH resource set.
  • Two new fields are used to indicate the first set of time intervals.
  • the receiving module 430 is further configured to receive second configuration signaling sent by the access network device, where the second configuration signaling is used to indicate the PSFCH resource set and/or the second time interval corresponding to the directly connected HARQ feedback information set;
  • the PSFCH resource set includes multiple PSFCH resources configured to report directly connected HARQ feedback information
  • the second time interval set includes the configured time interval between the directly connected data transmission and the directly connected HARQ feedback information corresponding to the second terminal feedback.
  • the second configuration signaling is second radio resource control RRC signaling.
  • the second RRC signaling includes a third newly added field and a fourth newly added field.
  • the third newly added field is used to indicate the PSFCH resource set.
  • Four new fields are used to indicate the second set of time intervals.
  • the direct connection data is sent to the second terminal through the direct connection through the first terminal; the direct connection HARQ feedback information fed back by the second terminal is received, and the direct connection HARQ feedback information is used to indicate the direct connection data correspondence Receiving status of the direct connection; reporting the directly connected HARQ feedback information to the access network device; making the direct connection communication scenario based on the access network device scheduling, even if the first terminal and the second terminal are in different access network device coverage Below, or outside the network coverage, the directly connected HARQ feedback information can also be transmitted from the second terminal to the first terminal, and then reported by the first terminal to the access network device, ensuring the information in the directly connected communication scenario The success rate of sending and receiving, and help to improve the efficiency of data transmission.
  • Fig. 5 is a block diagram of a data transmission device for direct communication according to an exemplary embodiment.
  • the device has the function of implementing the above method example on the access network device side.
  • the function may be implemented by hardware, or may be implemented by hardware executing corresponding software.
  • the apparatus 500 may include a sending module 510 and a receiving module 520.
  • the sending module 510 is configured to send DCI to the first terminal, and the DCI is used to instruct the first terminal to send the directly connected data to the second terminal through the directly connected link; receiving the directly connected HARQ feedback information fed back by the second terminal, and directly connected to the HARQ The feedback information is used to indicate the reception status corresponding to the directly connected data; report the directly connected HARQ feedback information to the access network device;
  • the receiving module 520 is configured to receive directly connected HARQ feedback information reported by the first terminal.
  • the receiving module 520 is further configured to receive directly connected HARQ feedback information sent by the first terminal in the first time-frequency resource through the PUCCH.
  • the first time-frequency resource includes:
  • Pre-configured PUCCH resources for transmitting uplink HARQ feedback information of downlink data are pre-configured.
  • the pre-configured first terminal reports the PUCCH resources used by the directly connected HARQ feedback; or,
  • the device also includes:
  • the sending module 510 is further configured to indicate a data transmission parameter to the first terminal in an explicit or implicit manner, and the data transmission parameter is used to indicate the first time-frequency resource and/or the second time-frequency resource.
  • the DCI carries data transmission parameters indicating the first time-frequency resource and the second time-frequency resource, and the DCI is used to instruct the first terminal to send the data transmission parameters indicating the second time-frequency resource to the second terminal .
  • the second time-frequency resource includes:
  • the pre-configured second terminal sends the PSFCH resource used by the directly connected HARQ feedback to the first terminal; or,
  • the second terminal maps the PSFCH resource according to the fourth time-frequency resource used to transmit the directly connected data; or,
  • the second terminal according to the PSFCH resource obtained by mapping the first time-frequency resource used by the first terminal to report the directly connected HARQ feedback information; or,
  • the PSFCH resource configured by the first terminal or the second terminal according to the first time-frequency resource and the preset timing relationship.
  • the data transmission parameters include at least one of the following parameters:
  • a first physical resource indicator where the first physical resource indicator is used to represent time-domain and/or frequency-domain resources used by the first terminal to report directly connected HARQ feedback information;
  • a first feedback timing indication where the first feedback timing indication is used to indicate a time interval between direct connection data transmission and direct connection HARQ feedback information reported by the first terminal;
  • a second physical resource indicator where the second physical resource indicator is used to indicate time-domain and/or frequency-domain resources used by the second terminal to send directly connected HARQ feedback information
  • the first feedback timing indication is used to indicate a time interval for direct connection data transmission and direct connection HARQ feedback information corresponding to the second terminal feedback.
  • the device also includes:
  • the sending module 510 is further configured to send first configuration signaling to the first terminal, where the first configuration signaling is used to indicate the PUCCH resource set and/or the first time interval set corresponding to the directly connected HARQ feedback information;
  • the PUCCH resource set includes multiple PUCCH resources configured to report directly connected HARQ feedback information
  • the first time interval set includes the configured time interval between the directly connected data transmission and the corresponding directly connected HARQ feedback information reported by the first terminal.
  • the first configuration signaling is first radio resource control RRC signaling.
  • the first RRC signaling includes a first newly added field and a second newly added field.
  • the first newly added field is used to indicate the PUCCH resource set.
  • Two new fields are used to indicate the first set of time intervals.
  • the device also includes:
  • the sending module 510 is further configured to send second configuration signaling to the first terminal and/or the second terminal, where the second configuration signaling is used to indicate the PSFCH resource set and/or the second time interval corresponding to the directly connected HARQ feedback information set;
  • the PSFCH resource set includes multiple PSFCH resources configured to report directly connected HARQ feedback information
  • the second time interval set includes the configured time interval between the directly connected data transmission and the directly connected HARQ feedback information corresponding to the second terminal feedback.
  • the second configuration signaling is second radio resource control RRC signaling.
  • the second RRC signaling includes a third newly added field and a fourth newly added field.
  • the third newly added field is used to indicate the PSFCH resource set.
  • Four new fields are used to indicate the second set of time intervals.
  • the device provided in the above embodiment realizes its function, it is only exemplified by the division of the above functional modules.
  • the above functions can be allocated by different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • the devices include hardware structures and/or software modules corresponding to performing the functions.
  • the embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed by hardware or computer software driven hardware depends on the specific application of the technical solution and design constraints. A person skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solutions of the embodiments of the present disclosure.
  • Fig. 6 is a block diagram of a terminal 600 according to an exemplary embodiment.
  • the terminal 600 may be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness device, personal digital assistant, and the like.
  • the terminal 600 may include one or more of the following components: a processing component 602, a memory 604, a power component 606, a multimedia component 608, an audio component 610, an input/output (I/O) interface 612, a sensor component 614, ⁇ 616.
  • the processing component 602 generally controls the overall operations of the terminal 600, such as operations associated with display, telephone calls, data communication, camera operations, and recording operations.
  • the processing element 602 may include one or more processors 620 to execute instructions to complete all or part of the steps in the above method.
  • the processing component 602 may include one or more modules to facilitate interaction between the processing component 602 and other components.
  • the processing component 602 may include a multimedia module to facilitate interaction between the multimedia component 608 and the processing component 602.
  • the memory 604 is configured to store various types of data to support operation at the device 600. Examples of these data include instructions for any application or method operating on the terminal 600, contact data, phone book data, messages, pictures, videos, and so on.
  • the memory 604 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable and removable Programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read only memory
  • EPROM erasable and removable Programmable read only memory
  • PROM programmable read only memory
  • ROM read only memory
  • magnetic memory flash memory
  • flash memory magnetic disk or optical disk.
  • the power component 606 provides power to various components of the terminal 600.
  • the power component 606 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the terminal 600.
  • the multimedia component 608 includes a screen that provides an output interface between the terminal 600 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user.
  • the touch panel includes one or more touch sensors to sense touch, swipe, and gestures on the touch panel. The touch sensor may not only sense the boundary of the touch or sliding action, but also detect the duration and pressure related to the touch or sliding operation.
  • the multimedia component 608 includes a front camera and/or a rear camera. When the device 600 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.
  • the audio component 610 is configured to output and/or input audio signals.
  • the audio component 610 includes a microphone (MIC).
  • the microphone When the terminal 600 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal.
  • the received audio signal may be further stored in the memory 604 or transmitted via the communication component 616.
  • the audio component 610 further includes a speaker for outputting audio signals.
  • the I/O interface 612 provides an interface between the processing component 602 and a peripheral interface module.
  • the peripheral interface module may be a keyboard, a click wheel, or a button. These buttons may include, but are not limited to: home button, volume button, start button, and lock button.
  • the sensor component 614 includes one or more sensors for providing the terminal 600 with status assessment in various aspects.
  • the sensor component 614 can detect the on/off state of the device 600, and the relative positioning of the components, for example, the components are the display and keypad of the terminal 600, and the sensor component 614 can also detect the position change of the terminal 600 or a component of the terminal 600 The presence or absence of user contact with the terminal 600, the orientation or acceleration/deceleration of the terminal 600, and the temperature change of the terminal 600.
  • the sensor assembly 614 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact.
  • the sensor component 614 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 614 may further include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • the communication component 616 is configured to facilitate wired or wireless communication between the terminal 600 and other devices.
  • the terminal 600 may access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof.
  • the communication part 616 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 616 also includes a near field communication (NFC) module to facilitate short-range communication.
  • NFC near field communication
  • the terminal 600 may be one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor or other electronic component is implemented to perform the above method.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor or other electronic component is implemented to perform the above method.
  • non-transitory computer-readable storage medium including instructions, for example, a memory 604 including instructions, which can be executed by the processor 620 of the terminal 600 to complete the above method.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, or the like.
  • a non-transitory computer-readable storage medium when instructions in the non-transitory computer storage medium are executed by a processor of a first terminal, enable the first terminal to execute the above-mentioned data transmission method.
  • Fig. 7 is a block diagram of an access network device 700 according to an exemplary embodiment.
  • the access network device 700 may include a processor 701, a receiver 702, a transmitter 703, and a memory 704.
  • the receiver 702, the transmitter 703, and the memory 704 are respectively connected to the processor 701 through a bus.
  • the processor 701 includes one or more processing cores.
  • the processor 701 runs a software program and a module to perform the method performed by the access network device in the transmission configuration method provided by the embodiment of the present disclosure.
  • the memory 704 may be used to store software programs and modules. Specifically, the memory 704 may store an application program module 7042 required by the operating system 7041 and at least one function.
  • the receiver 702 is used to receive communication data sent by other devices, and the transmitter 703 is used to send communication data to other devices.
  • An exemplary embodiment of the present disclosure also provides a data transmission system for direct communication, the data transmission system includes a terminal and an access network device;
  • the data transmission device provided by the terminal as shown in the embodiment shown in FIG. 4;
  • the access network is shown in the data transmission device provided in the embodiment shown in FIG. 5.
  • An exemplary embodiment of the present disclosure also provides a data transmission system for direct communication, the data transmission system includes a terminal and an access network device;
  • the terminal is as provided in the embodiment shown in FIG. 6;
  • the access network is shown in FIG. 7 as the access network device provided in the embodiment.
  • An exemplary embodiment of the present disclosure also provides a computer-readable storage medium that stores at least one instruction, at least one program, code set, or instruction set in the computer-readable storage medium, the at least one instruction, the At least one program, the code set or the instruction set is loaded and executed by the processor to implement the steps performed by the first terminal or the access network device in the data transmission method of the direct connection communication provided by the foregoing method embodiments.

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Abstract

本公开是关于一种直连通信的数据传输方法、装置、设备及系统，属于通信技术领域。所述方法包括：第一终端根据接入网设备发送的DCI通过直连链路向第二终端发送直连数据；接收第二终端反馈的直连混合自动重传请求HARQ反馈信息，直连HARQ反馈信息用于指示直连数据对应的接收状态；将直连HARQ反馈信息上报至接入网设备。本公开通过上述方式，使得基于接入网设备调度的直连通信场景中，直连HARQ反馈信息可以先从第二终端传给第一终端，再由第一终端上报给接入网设备，保证了在直连通信场景中信息收发的成功率，且有助于提高数据传输的效率。

Description

直连通信的数据传输方法、装置、设备及系统 技术领域
本公开涉及通信技术领域，特别涉及一种直连通信的数据传输方法、装置、设备及系统。
背景技术
在车联网(Vehicle to Everything，V2X)技术中，车载设备与其它设备(如其它车载设备、路侧基础设施等)之间可以通过侧链路(英文：sidelink)进行直连通信。直连通信具有时延短、开销小等特点。
相关技术中，基于接入网设备调度的直连通信方式包括：接入网设备通过下行控制信息(Downlink Control Information，DCI)将调度信息发送至直连通信发送端用户设备(简称为：第一终端)，第一终端根据接入网设备的调度信息与通过sidelink将直连数据发送至直连通信接收端用户设备(简称为：第二终端)。
长期演进(Long Term Evolution，LTE)V2x中只支持物理层的广播发送，不支持物理层的混合自动重传请求(Hybrid Auto Repeat Request，HARQ)反馈。第二终端如何向接入网设备上报HARQ反馈，目前还没有合适的解决方案。
发明内容
本公开实施例提供了一种直连通信的数据传输方法、装置、设备及系统。所述技术方案如下：
根据本公开实施例的第一方面，提供了一种直连通信的数据传输方法，用于第一终端中，所述方法包括：
根据接入网设备发送的DCI通过直连链路向第二终端发送直连数据；
接收所述第二终端反馈的直连HARQ反馈信息，所述直连HARQ反馈信息用于指示所述直连数据对应的接收状态；
将所述直连HARQ反馈信息上报至接入网设备。
可选的，所述将所述直连HARQ反馈信息上报至接入网设备，包括：
通过物理上行控制信道(Physical Uplink Control CHannel，PUCCH)在第一时频资源中将所述直连HARQ反馈信息上报至所述接入网设备。
可选的，所述第一时频资源，包括：
预配置的用于传输下行数据的上行HARQ反馈信息的PUCCH资源；或者，
预配置的所述第一终端上报所述直连HARQ反馈所使用的PUCCH资源；或者，
根据传输所述DCI所使用的第三时频资源映射得到的PUCCH资源。
可选的，所述接收所述第二终端反馈的直连HARQ反馈信息，包括：
接收所述第二终端通过直连反馈信道(Physical Sidelink Feedback Channel，PSFCH)在第二时频资源中反馈的所述直连HARQ反馈信息。
可选的，所述第二时频资源，包括：
预配置的所述第二终端向所述第一终端发送所述直连HARQ反馈所使用的PSFCH资源；或者，
所述第二终端根据传输所述直连数据所使用的第四时频资源映射得到的PSFCH资源；或者，
所述第二终端根据所述第一终端上报所述直连HARQ反馈信息所使用的第一时频资源映射得到的PSFCH资源；或者，
所述第一终端或者所述第二终端根据所述第一时频资源和预设时序关系配置的PSFCH资源。
可选的，所述方法，还包括：
确定所述接入网设备通过显性方式或隐性方式指示的数据传输参数，所述数据传输参数用于指示第一时频资源和/或第二时频资源。
可选的，所述DCI中携带有用于指示第一时频资源和第二时频资源的数据传输参数；所述方法还包括：
向所述第二终端发送用于指示所述第二时频资源的数据传输参数。
可选的，所述数据传输参数包括如下参数中的至少一种：
第一物理资源指示，所述第一物理资源指示用于表示所述第一终端上报所述直连HARQ反馈信息所使用的时域和/或频域资源；
第一反馈定时指示，所述第一反馈定时指示用于表示所述直连数据传输与所述第一终端上报对应的直连HARQ反馈信息的时间间隔；
第二物理资源指示，所述第二物理资源指示用于表示所述第二终端发送所述直连HARQ反馈信息所使用的时域和/或频域资源；
第二反馈定时指示，所述第一反馈定时指示用于表示所述直连数据传输与所述第二终端反馈对应的直连HARQ反馈信息的时间间隔。
可选的，所述方法还包括：
接收所述接入网设备发送的第一配置信令，所述第一配置信令用于指示所述直连HARQ反馈信息对应的PUCCH资源集合和/或第一时间间隔集合；
其中，所述PUCCH资源集合包括配置的用于上报所述直连HARQ反馈信息的多个PUCCH资源，所述第一时间间隔集合包括配置的直连数据传输与所述第一终端上报对应的直连HARQ反馈信息的时间间隔。
可选的，所述第一配置信令为第一无线资源控制RRC信令，所述第一RRC信令包括第一新增字段和第二新增字段，所述第一新增字段用于指示所述PUCCH资源集合，所述第二新增字段用于指示所述第一时间间隔集合。
可选的，接收所述接入网设备发送的第二配置信令，所述第二配置信令用于指示所述直连HARQ反馈信息对应的PSFCH资源集合和/或第二时间间隔集合；
其中，所述PSFCH资源集合包括配置的用于上报所述直连HARQ反馈信息的多个PSFCH资源，所述第二时间间隔集合包括配置的所述直连数据传输与所述第二终端反馈对应的直连HARQ反馈信息的时间间隔。
可选的，所述第二配置信令为第二无线资源控制RRC信令，所述第二RRC信令包括第三新增字段和第四新增字段，所述第三新增字段用于指示所述PSFCH资源集合，所述第四新增字段用于指示所述第二时间间隔集合。
根据本公开实施例的第二方面，提供了一种直连通信的数据传输方法，用于接入网设备中，所述方法包括：
向第一终端发送DCI，所述DCI用于指示所述第一终端通过直连链路向第二终端发送直连数据；接收所述第二终端反馈的直连HARQ反馈信息，所述直连HARQ反馈信息用于指示所述直连数据对应的接收状态；向所述接入网设备上报所述直连HARQ反馈信息；
接收所述第一终端上报的所述直连HARQ反馈信息。
可选的，所述接收所述第一终端上报的所述直连HARQ反馈信息，包括：
接收所述第一终端通过PUCCH在第一时频资源中发送的所述直连HARQ 反馈信息。
可选的，所述第一时频资源，包括：
预配置的用于传输下行数据的上行HARQ反馈信息的PUCCH资源；或者，
预配置的所述第一终端上报所述直连HARQ反馈所使用的PUCCH资源；或者，
根据传输DCI所使用的第三时频资源映射得到的PUCCH资源。
可选的，所述方法，还包括：
通过显性方式或隐性方式向所述第一终端指示数据传输参数，所述数据传输参数用于指示第一时频资源和/或第二时频资源。
可选的，所述DCI中携带有用于指示第一时频资源和第二时频资源的数据传输参数，所述DCI用于指示所述第一终端向所述第二终端发送用于指示所述第二时频资源的数据传输参数。
可选的，所述第二时频资源，包括：
预配置的所述第二终端向所述第一终端发送所述直连HARQ反馈所使用的PSFCH资源；或者，
所述第二终端根据传输所述直连数据所使用的第四时频资源映射得到的PSFCH资源；或者，
所述第二终端根据所述第一终端上报所述直连HARQ反馈信息所使用的第一时频资源映射得到的PSFCH资源；或者，
所述第一终端或者所述第二终端根据所述第一时频资源和预设时序关系配置的PSFCH资源。
可选的，所述数据传输参数包括如下参数中的至少一种：
第一物理资源指示，所述第一物理资源指示用于表示所述第一终端上报所述直连HARQ反馈信息所使用的时域和/或频域资源；
第一反馈定时指示，所述第一反馈定时指示用于表示所述直连数据传输与所述第一终端上报对应的直连HARQ反馈信息的时间间隔；
第二物理资源指示，所述第二物理资源指示用于表示所述第二终端发送所述直连HARQ反馈信息所使用的时域和/或频域资源；
第二反馈定时指示，所述第一反馈定时指示用于表示所述直连数据传输与所述第二终端反馈对应的直连HARQ反馈信息的时间间隔。
可选的，所述方法还包括：
向所述第一终端发送第一配置信令，所述第一配置信令用于指示所述直连HARQ反馈信息对应的PUCCH资源集合和/或第一时间间隔集合；
其中，所述PUCCH资源集合包括配置的用于上报所述直连HARQ反馈信息的多个PUCCH资源，所述第一时间间隔集合包括配置的直连数据传输与所述第一终端上报对应的直连HARQ反馈信息的时间间隔。
可选的，所述第一配置信令为第一无线资源控制RRC信令，所述第一RRC信令包括第一新增字段和第二新增字段，所述第一新增字段用于指示所述PUCCH资源集合，所述第二新增字段用于指示所述第一时间间隔集合。
可选的，所述方法还包括：
向所述第一终端和/或所述第二终端发送第二配置信令，所述第二配置信令用于指示所述直连HARQ反馈信息对应的PSFCH资源集合和/或第二时间间隔集合；
其中，所述PSFCH资源集合包括配置的用于上报所述直连HARQ反馈信息的多个PSFCH资源，所述第二时间间隔集合包括配置的所述直连数据传输与所述第二终端反馈对应的直连HARQ反馈信息的时间间隔。
可选的，所述第二配置信令为第二无线资源控制RRC信令，所述第二RRC信令包括第三新增字段和第四新增字段，所述第三新增字段用于指示所述PSFCH资源集合，所述第四新增字段用于指示所述第二时间间隔集合。
根据本公开实施例的第三方面，提供了一种直连通信的数据传输装置，用于第一终端中，所述装置包括：
发送模块，被配置为根据接入网设备发送的DCI通过直连链路向第二终端发送直连数据；
接收模块，被配置为接收所述第二终端反馈的直连HARQ反馈信息，所述直连HARQ反馈信息用于指示所述直连数据对应的接收状态；
所述发送模块，被配置为将所述直连HARQ反馈信息上报至接入网设备。
可选的，所述发送模块，还被配置为通过PUCCH在第一时频资源中将所述直连HARQ反馈信息上报至所述接入网设备。
可选的，所述第一时频资源，包括：
预配置的用于传输下行数据的上行HARQ反馈信息的PUCCH资源；或者，
预配置的所述第一终端上报所述直连HARQ反馈所使用的PUCCH资源； 或者，
根据传输所述DCI所使用的第三时频资源映射得到的PUCCH资源。
可选的，所述接收模块，还被配置为接收所述第二终端通过PSFCH在第二时频资源中反馈的所述直连HARQ反馈信息。
可选的，所述第二时频资源，包括：
预配置的所述第二终端向所述第一终端发送所述直连HARQ反馈所使用的PSFCH资源；或者，
所述第二终端根据传输所述直连数据所使用的第四时频资源映射得到的PSFCH资源；或者，
所述第二终端根据所述第一终端上报所述直连HARQ反馈信息所使用的第一时频资源映射得到的PSFCH资源；或者，
所述第一终端或者所述第二终端根据所述第一时频资源和预设时序关系配置的PSFCH资源。
可选的，所述装置，还包括：
处理模块，被配置为确定所述接入网设备通过显性方式或隐性方式指示的数据传输参数，所述数据传输参数用于指示第一时频资源和/或第二时频资源。
可选的，所述DCI中携带有用于指示第一时频资源和第二时频资源的数据传输参数；
所述发送模块，还被配置为向所述第二终端发送用于指示所述第二时频资源的数据传输参数。
可选的，所述数据传输参数包括如下参数中的至少一种：
第一物理资源指示，所述第一物理资源指示用于表示所述第一终端上报所述直连HARQ反馈信息所使用的时域和/或频域资源；
第一反馈定时指示，所述第一反馈定时指示用于表示所述直连数据传输与所述第一终端上报对应的直连HARQ反馈信息的时间间隔；
第二物理资源指示，所述第二物理资源指示用于表示所述第二终端发送所述直连HARQ反馈信息所使用的时域和/或频域资源；
第二反馈定时指示，所述第一反馈定时指示用于表示所述直连数据传输与所述第二终端反馈对应的直连HARQ反馈信息的时间间隔。
可选的，所述装置还包括：
所述接收模块，还被配置为接收所述接入网设备发送的第一配置信令，所 述第一配置信令用于指示所述直连HARQ反馈信息对应的PUCCH资源集合和/或第一时间间隔集合；
其中，所述PUCCH资源集合包括配置的用于上报所述直连HARQ反馈信息的多个PUCCH资源，所述第一时间间隔集合包括配置的直连数据传输与所述第一终端上报对应的直连HARQ反馈信息的时间间隔。
可选的，所述第一配置信令为第一无线资源控制RRC信令，所述第一RRC信令包括第一新增字段和第二新增字段，所述第一新增字段用于指示所述PUCCH资源集合，所述第二新增字段用于指示所述第一时间间隔集合。
可选的，所述装置还包括：
所述接收模块，还被配置为接收所述接入网设备发送的第二配置信令，所述第二配置信令用于指示所述直连HARQ反馈信息对应的PSFCH资源集合和/或第二时间间隔集合；
其中，所述PSFCH资源集合包括配置的用于上报所述直连HARQ反馈信息的多个PSFCH资源，所述第二时间间隔集合包括配置的所述直连数据传输与所述第二终端反馈对应的直连HARQ反馈信息的时间间隔。
可选的，所述第二配置信令为第二无线资源控制RRC信令，所述第二RRC信令包括第三新增字段和第四新增字段，所述第三新增字段用于指示所述PSFCH资源集合，所述第四新增字段用于指示所述第二时间间隔集合。
根据本公开实施例的第四方面，提供了一种直连通信的数据传输装置，用于接入网设备中，所述装置包括：
发送模块，被配置为向第一终端发送DCI，所述DCI用于指示所述第一终端通过直连链路向第二终端发送直连数据；接收所述第二终端反馈的直连HARQ反馈信息，所述直连HARQ反馈信息用于指示所述直连数据对应的接收状态；向所述接入网设备上报所述直连HARQ反馈信息；
接收模块，被配置为接收所述第一终端上报的所述直连HARQ反馈信息。
可选的，所述接收模块，还被配置为接收所述第一终端通过PUCCH在第一时频资源中发送的所述直连HARQ反馈信息。
可选的，所述第一时频资源，包括：
预配置的用于传输下行数据的上行HARQ反馈信息的PUCCH资源；或者，
预配置的所述第一终端上报所述直连HARQ反馈所使用的PUCCH资源； 或者，
根据传输DCI所使用的第三时频资源映射得到的PUCCH资源。
可选的，所述装置，还包括：
所述发送模块，还被配置为通过显性方式或隐性方式向所述第一终端指示数据传输参数，所述数据传输参数用于指示第一时频资源和/或第二时频资源。
可选的，所述DCI中携带有用于指示第一时频资源和第二时频资源的数据传输参数，所述DCI用于指示所述第一终端向所述第二终端发送用于指示所述第二时频资源的数据传输参数。
可选的，所述第二时频资源，包括：
预配置的所述第二终端向所述第一终端发送所述直连HARQ反馈所使用的PSFCH资源；或者，
所述第二终端根据传输所述直连数据所使用的第四时频资源映射得到的PSFCH资源；或者，
所述第二终端根据所述第一终端上报所述直连HARQ反馈信息所使用的第一时频资源映射得到的PSFCH资源；或者，
所述第一终端或者所述第二终端根据所述第一时频资源和预设时序关系配置的PSFCH资源。
可选的，所述数据传输参数包括如下参数中的至少一种：
第一物理资源指示，所述第一物理资源指示用于表示所述第一终端上报所述直连HARQ反馈信息所使用的时域和/或频域资源；
第一反馈定时指示，所述第一反馈定时指示用于表示所述直连数据传输与所述第一终端上报对应的直连HARQ反馈信息的时间间隔；
第二物理资源指示，所述第二物理资源指示用于表示所述第二终端发送所述直连HARQ反馈信息所使用的时域和/或频域资源；
第二反馈定时指示，所述第一反馈定时指示用于表示所述直连数据传输与所述第二终端反馈对应的直连HARQ反馈信息的时间间隔。
可选的，所述装置还包括：
所述发送模块，还被配置为向所述第一终端发送第一配置信令，所述第一配置信令用于指示所述直连HARQ反馈信息对应的PUCCH资源集合和/或第一时间间隔集合；
其中，所述PUCCH资源集合包括配置的用于上报所述直连HARQ反馈信 息的多个PUCCH资源，所述第一时间间隔集合包括配置的直连数据传输与所述第一终端上报对应的直连HARQ反馈信息的时间间隔。
可选的，所述第一配置信令为第一无线资源控制RRC信令，所述第一RRC信令包括第一新增字段和第二新增字段，所述第一新增字段用于指示所述PUCCH资源集合，所述第二新增字段用于指示所述第一时间间隔集合。
可选的，所述装置还包括：
所述发送模块，还被配置为向所述第一终端和/或所述第二终端发送第二配置信令，所述第二配置信令用于指示所述直连HARQ反馈信息对应的PSFCH资源集合和/或第二时间间隔集合；
其中，所述PSFCH资源集合包括配置的用于上报所述直连HARQ反馈信息的多个PSFCH资源，所述第二时间间隔集合包括配置的所述直连数据传输与所述第二终端反馈对应的直连HARQ反馈信息的时间间隔。
可选的，所述第二配置信令为第二无线资源控制RRC信令，所述第二RRC信令包括第三新增字段和第四新增字段，所述第三新增字段用于指示所述PSFCH资源集合，所述第四新增字段用于指示所述第二时间间隔集合。
根据本公开实施例的第五方面，提供了一种终端，所述终端包括：
处理器；
与所述处理器相连的收发器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为加载并执行所述可执行指令以实现如第一方面或者第一方面的任意一种可能的实现方式所述的直连通信的数据传输方法的步骤。
根据本公开实施例的第六方面，提供了一种接入网设备，所述接入网设备包括：
处理器；
与所述处理器相连的收发器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为加载并执行所述可执行指令以实现如第二方面或者第二方面的任意一种可能的实现方式所述的直连通信的数据传输方法的步骤。
根据本公开实施例的第七方面，提供了一种直连通信的数据传输系统，所 述数据传输系统包括终端和接入网设备；
所述终端如第三方面或者第三方面的任意一种可能的实现方式所述的数据传输装置；
所述接入网如第四方面或者第四方面的任意一种可能的实现方式所述的数据传输装置。
根据本公开实施例的第八方面，提供了一种直连通信的数据传输系统，所述数据传输系统包括终端和接入网设备；
所述终端如第五方面所述的数据传输装置；
所述接入网如第六方面所述的数据传输装置。
根据本公开实施例的第九方面，提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有至少一条指令、至少一段程序、代码集或指令集，所述至少一条指令、所述至少一段程序、所述代码集或指令集由所述处理器加载并执行以实现如第一方面或者第一方面的任意一种可能的实现方式所述的直连通信的数据传输方法的步骤，或者实现如第二方面或者第一方面的任意一种可能的实现方式所述的直连通信的数据传输方法的步骤。
本公开实施例提供的技术方案可以包括以下有益效果：
通过第一终端通过直连链路向第二终端发送直连数据；接收第二终端反馈的直连HARQ反馈信息，直连HARQ反馈信息用于指示直连数据对应的接收状态；将直连HARQ反馈信息上报至接入网设备；使得基于接入网设备调度的直连通信场景中，即便第一终端可能和第二终端处在不同的接入网设备覆盖范围之下，或者处在网络覆盖之外，直连HARQ反馈信息也可以先从第二终端传给第一终端，再由第一终端上报给接入网设备，保证了在直连通信场景中信息收发的成功率，且有助于提高数据传输的效率。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。
图1是本公开实施例可能适用的一种网络架构的示意图；
图2是根据一示例性实施例示出的一种直连通信的数据传输方法的流程图；
图3是根据另一示例性实施例示出的一种直连通信的数据传输方法的流程图；
图4是根据一示例性实施例示出的一种直连通信的数据传输装置的框图；
图5是根据另一示例性实施例示出的一种直连通信的数据传输装置的框图；
图6是根据一示例性实施例示出的一种终端的框图；
图7是根据一示例性实施例示出的一种接入网设备的框图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
本公开实施例描述的网络架构以及业务场景是为了更加清楚地说明本公开实施例的技术方案，并不构成对本公开实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本公开实施例提供的技术方案对于类似的技术问题，同样适用。
图1示出了本公开实施例可能适用的一种网络架构的示意图。该网络架构可以是一种C-V2X系统的网络架构。其中，C是指蜂窝(英文：Cellular)，C-V2X系统是基于3G、4G或5G等蜂窝网通信系统演进形成的车载无线通信系统。该网络架构可以包括：核心网11、接入网12、终端13和车辆14。
核心网11中包括若干核心网设备。核心网设备的功能主要是提供用户连接、对用户的管理以及对业务完成承载，作为承载网络提供到外部网络的接口。例如，长期演进(Long Term Evolution，LTE)系统的核心网中可以包括移动管理节点(Mobility Management Entity，MME)、服务网关(Serving Gateway，S-GW)、PDN网关(PDN Gateway，P-GW)等设备。5G NR系统的核心网中可以包括接入和移动性管理功能(Access and Mobility Management Function， AMF)实体、用户平面功能(User Plane Function，UPF)实体和会话管理功能(Session Management Function，SMF)实体等设备。
接入网12中包括若干接入网设备120。接入网设备120与核心网设备110之间通过某种接口技术互相通信，例如LTE系统中的S1接口，5G NR系统中的NG接口。接入网设备120可以是基站(Base Station，BS)，所述基站是一种部署在接入网中用以为终端提供无线通信功能的装置。所述基站可以包括各种形式的宏基站，微基站，中继站，接入点等等。在采用不同的无线接入技术的系统中，具备基站功能的设备的名称可能会有所不同，例如在LTE系统中，称为eNodeB或者eNB；在5G NR系统中，称为gNodeB或者gNB。随着通信技术的演进，“基站”这一名称可能会变化。为方便描述，本公开实施例中，上述为终端提供无线通信功能的装置统称为接入网设备。
终端13可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其他处理设备，以及各种形式的用户设备(User Equipment，UE)，移动台(Mobile Station，MS)，终端(英文：terminal device)等等。为方便描述，上面提到的设备统称为终端。接入网设备120与终端13之间通过某种空口技术互相通信，例如Uu接口。
车辆14可以是自动驾驶车辆，也可以是非自动驾驶车辆。车辆14具备一车载设备，车辆14通过车载设备实现和其它车辆、终端13或者其它设备的通信，例如路侧单元(Road Side Unit，RSU)。该车载设备也可以称为车载终端、车载通信装置或其它名称，本公开实施例对此不作限定。车载设备可以是一集成在车载通信盒(Telematics BOX，T-BOX)里的装置，也可以是一跟车体分离的装置。此外，车载设备可以在车辆14出厂前装配在车辆14中，也可以在车辆14出厂后装配在车辆14中。
车辆14的车载设备与其它设备(如其它车载设备、终端13、RSU等)之间可以通过直连通信接口(如PC5接口)互相通信，相应地，该基于直连通信接口建立的通信链路可以称为直连链路或侧链路(sidelink)。此外，车辆14的车载设备与其它设备之间还可以通过接入网12以及核心网11进行中转，即利用原有的蜂窝网络中终端13与接入网设备120之间的通信链路进行通信。与基于Uu接口通信相比，基于直连通信接口通信具有时延短、开销小等特点，适合用于车载设备和地理位置接近的其它周边设备之间的通信。
上述图1所示的网络架构可以实现V2X业务场景，上述网络架构中还可 以包括RSU、V2X应用服务器、V2X控制功能节点等设备，本公开实施例对此不作限定。另外，本公开实施例描述的技术方案可以适用于5G NR系统，也可以适用于5G NR系统后续的演进系统。
在本公开实施例中，针对上述V2X业务场景中的直连通信场景，提供了一种直连通信的数据传输方法，以解决资源冲突的问题。
在本公开实施例中，第一终端和第二终端是V2X业务场景中，进行直连通信的两端设备，第一终端和第二终端之间可以通过直连通信接口(如PC5接口)建立侧链路，然后通过该侧链路进行用户面数据和控制面信令的交互。例如，第一终端可以是图1所示网络架构中的车辆14的车载设备，第二终端可以是其它车辆的车载设备，也可以是终端13或者RSU等。又例如，第一终端可以是图1所示网络架构中的终端13，第二终端可以是其它终端，也可以是车辆14的车载设备或者RSU等。在一些实施例中，对于同一设备(如同一车载设备或同一终端)来讲，其在某些场景下可以作为第一终端，在另一些场景下也可以作为第二终端。
在本公开实施例中，第一终端也称为直连通信发送端用户设备，第二终端也称为直连通信接收端用户设备。
下面，通过几个示例性实施例对本公开技术方案进行介绍说明。
图2是根据一示例性实施例示出的一种直连通信的数据传输方法的流程图。该方法可应用于图1所示的网络架构中。该方法可以包括如下几个步骤。
在步骤201中，接入网设备向第一终端发送DCI。
可选的，接入网设备向第一终端发送DCI，DCI中携带有数据传输参数。
在步骤202中，第一终端根据DCI通过直连链路向第二终端发送直连数据。
第一终端根据接入网设备发送的DCI通过直连链路向第二终端发送直连数据。
可选的，第一终端接收接入网设备通过下行信道发送的DCI，根据DCI中的数据传输参数通过直连链路向第二终端发送直连数据。
可选的，该DCI为用于调度直连数据传输的DCI。
示意性的，下行信道包括物理下行控制信道(Physical Downlink Control Channel,PDCCH)。
可选的，数据传输参数用于指示时频资源和/或调制编码方式。
可选的，第一终端接收接入网设备通过下行信道发送的DCI，根据DCI中的数据传输参数所指示的时频资源和/或调制编码方式，通过直连链路向第二终端发送直连数据。
其中，直连数据为第一终端过直连链路向第二终端发送的物理层数据。
第一终端使用直连链路的第四时频资源将直连数据发送至第二终端。
可选的，第四时频资源为预定义或者预配置的时频资源。
可选的，第一终端还会在直连数据发送之前或直连数据发送的同时，向第二终端发送控制信息，该控制信息用于指示物理层数据的接收相关信息。
可选的，接收相关信息包括：用于承载物理层数据的第四时频资源的时域位置和/或频域位置。在一些实施例中，接收相关信息还包括：物理层数据的调制编码方式(Modulation and Coding Scheme，MCS)、混合自动重传请求进程标识进程标识(Hybrid ARQ Process Number，HARQ-ID)、新数据指示(New-Data Indicator，NDI)等信息。
在步骤203中，第二终端向第一终端反馈直连HARQ反馈信息。
对应的，第二终端接收第一终端发送的直连数据。可选的，第二终端接收第一终端使用直连链路的第四时频资源发送的直连数据。
第二终端向第一终端反馈直连HARQ反馈信息，直连HARQ反馈信息包括至少一次直连数据传输对应的HARQ反馈比特。
示意的，一次直连数据传输对应的HARQ反馈比特的数量为1比特(英文：bit)或者2bit。
其中，直连HARQ反馈信息用于指示直连数据对应的接收状态。直连数据对应的接收状态包括：确认接收状态(Acknowledgement，ACK)或非确认接收状态(Non-Acknowledgement，NACK)。
ACK用于指示直连数据被第二终端正确接收到。
NACK包括未接收状态和/或未正确接收状态。未接收状态用于指示直连数据未被第二终端接收到；未正确接收状态用于指示直连数据虽然被第二终端接收到，但是第二终端接收到的直连数据与第一终端发送的直连数据不同，即，接收到错误的直连数据。
第二终端在接收到直连数据后，对接收到的直连数据进行处理，比如：第二终端对直连数据进行解调、译码等处理。在处理过程中，第二终端会确定出直连数据的接收状态。
可选的，第二终端通过直连信道向第一终端发送直连HARQ反馈信息。示意性的，直连信道为PSFCH。
在步骤204中，第一终端接收第二终端反馈的直连HARQ反馈信息。
对应的，第一终端接收第二终端通过PSFCH发送的直连HARQ反馈信息。
需要说明的是，本公开实施例中第一终端与第二终端的直连通信场景是基于接入网设备调度的直连通信场景。即第一终端基于接入网设备的调度进行数据发送。对于基于接入网设备调度的直连通信方式，由于调度是由接入网设备侧完成的，直连数据对应的直连HARQ反馈信息需要从第二终端传回接入网设备，以方便接入网设备侧调度数据重传或者新数据的发送。考虑到第一终端可能和第二终端处在不同的接入网设备覆盖范围之下，或者处在网络覆盖之外，直连HARQ反馈信息需要先从第二终端传给第一终端，再由第一终端上报给接入网设备。
在步骤205中，第一终端将直连HARQ反馈信息上报至接入网设备。
可选的，第一终端在目标时间单元的物理层上行信道上将直连HARQ反馈信息上报至接入网设备。
可选的，目标时间单元是指终端设备需要发送上行HARQ反馈比特和直连HARQ反馈信息时对应的时间单元。示意性的，目标时间单元为a个符号(英文：symbol)、b个符号组(英文：symbol group)、c个时隙(英文：slot)或d个子帧(英文：subframe)，a、b、c、d为正整数，本实施例对此不加以限定。
可选的，物理层上行信道为用于向接入网设备发送直连HARQ反馈信息的上行信道。
可选的，物理层上行信道是基于第一通信协议或第二通信协议的上行信道。第一通信协议包括LTE协议，第二通信协议包括NR协议。
可选的，物理层上行信道是PUCCH。示意性的，PUCCH信道格式为PU CCH format 1、PUCCH format 1a、PUCCH format 1b、PUCCH format 2、P UCCHformat 2a、PUCCH format 2b、PUCCH format 3、PUCCH format 4和PUCCH format 5中的任意一种。
在步骤206中，接入网设备接收第一终端上报的直连HARQ反馈信息。
综上所述，本实施例通过第一终端通过直连链路向第二终端发送直连数据；接收第二终端反馈的直连HARQ反馈信息，直连HARQ反馈信息用于指示直连数据对应的接收状态；将直连HARQ反馈信息上报至接入网设备；使 得基于接入网设备调度的直连通信场景中，即便第一终端可能和第二终端处在不同的接入网设备覆盖范围之下，或者处在网络覆盖之外，直连HARQ反馈信息也可以先从第二终端传给第一终端，再由第一终端上报给接入网设备，保证了在直连通信场景中信息收发的成功率，且有助于提高数据传输的效率。
需要说明的是，由于本公开实施例中涉及到多种时频资源，先对多种时频资源进行说明。
第一时频资源：第一终端向接入网设备上报直连HARQ反馈信息所使用的时域和/或频域资源。
第二时频资源：第二终端向第一终端发送直连HARQ反馈信息所使用的时域和/或频域资源。
第三时频资源：接入网设备向第一终端发送DCI所使用的时域和/或频域资源。
第四时频资源：第一终端向第二终端发送直连数据所使用的时域和/或频域资源。
图3是根据一示例性实施例示出的一种直连通信的数据传输方法的流程图。该方法可应用于图1所示的网络架构中。该方法可以包括如下几个步骤。
在步骤301中，接入网设备向第一终端发送第一配置信令。
可选的，第一配置信令用于指示直连HARQ反馈信息对应的PUCCH资源集合和/或第一时间间隔集合。
其中，PUCCH资源集合包括配置的用于上报直连HARQ反馈信息的多个PUCCH资源，第一时间间隔集合包括配置的直连数据传输与第一终端上报对应的直连HARQ反馈信息的时间间隔。
可选的，第一配置信令为第一RRC信令，第一RRC信令包括第一新增字段和第二新增字段，第一新增字段用于指示PUCCH资源集合，第二新增字段用于指示第一时间间隔集合。
示意性的，第一RRC信令PUCCH-config中的第一新增字段resourceSetSL，专用于配置直连HARQ反馈信息所使用的PUCCH资源；第二新增字段Sl-DataToUL-ACK，专用于配置第一时间间隔集合。
在步骤302中，接入网设备向第二终端发送第二配置信令。
可选的，第二配置信令用于指示直连HARQ反馈信息对应的PSFCH资源集合和/或第二时间间隔集合。
其中，PSFCH资源集合包括配置的用于上报直连HARQ反馈信息的多个PSFCH资源，第二时间间隔集合包括配置的直连数据传输与第二终端反馈对应的直连HARQ反馈信息的时间间隔。
可选的，接入网设备将第二配置信令发送至第一终端和/或第二终端。
在一种可能的实现方式中，接入网设备将第二配置信令分别发送至第一终端和第二终端。对应的，第一终端和第二终端均接收到接入网设备发送的第二配置信令。
可选的，第二配置信令为第二RRC信令，第二RRC信令包括第三新增字段和第四新增字段，第三新增字段用于指示PSFCH资源集合，第四新增字段用于指示第二时间间隔集合。
示意性的，第二RRC信令PSFCH-config中的第三新增字段resourceSetSL，专用于配置直连HARQ反馈信息所使用的PSFCH资源；第四新增字段Sl-DataToUL-ACK，专用于配置第二时间间隔集合。
在另一种可能的实现方式中，接入网设备将第二配置信令发送至第一终端，第一终端再将该第二配置信令转发至第二终端。
在另一种可能的实现方式中，接入网设备将第二配置信令发送至第二终端，第二终端再将该第二配置信令发送至第一终端。本实施例对接入网设备向第二终端发送第二配置信令的实现方式不加以限定。
在步骤303中，接入网设备向第一终端发送DCI。
其中，DCI用于指示第一终端通过直连链路向第二终端发送直连数据。可选的，DCI用于指示第一终端向第二终端发送直连数据的第四时频资源。
可选的，接入网设备通过显性方式或隐性方式向第一终端指示数据传输参数，数据传输参数用于指示第一时频资源和/或第二时频资源。
接入网设备通过显性方式向第一终端指示数据传输参数的方式包括：接入网设备向第一终端发送DCI，该DCI中还携带有用于指示第一时频资源和第二时频资源的数据传输参数。
可选的，数据传输参数包括如下参数中的至少一种：
第一物理资源指示，第一物理资源指示用于表示第一终端上报直连HARQ反馈信息所使用的时域和/或频域资源。
第一反馈定时指示，第一反馈定时指示用于表示直连数据传输与第一终端上报对应的直连HARQ反馈信息的时间间隔。
第二物理资源指示，第二物理资源指示用于表示第二终端发送直连HARQ反馈信息所使用的时域和/或频域资源。
第二反馈定时指示，第一反馈定时指示用于表示直连数据传输与第二终端反馈对应的直连HARQ反馈信息的时间间隔。
示意性的，第一物理资源指示为PUCCH resource indicator，第一物理资源指示用于第一时域资源，第一反馈定时指示为PSSCH-to-ULHARQ_feedback timing indicator。第二物理资源指示为PFSCH resource indicator，第二反馈定时指示为PSSCH-to-SLHARQ_feedback timing indicator。其中，时域为时域长度以及时隙中占有的具体时域符号。
可选的，第一终端上报直连HARQ反馈信息所使用的时域和/或频域资源即为第一时频资源，第一时频资源为接入网设备为直连HARQ反馈信息配置的PUCCH资源集合中的一个PUCCH资源。
可选的，第二终端发送直连HARQ反馈信息所使用的时域和/或频域资源即为第二时频资源，第二时频资源为接入网设备为直连HARQ反馈信息配置的PSFCH资源集合中的一个PSFCH资源。
在步骤304中，第一终端根据DCI，通过直连链路向第二终端发送直连数据和SCI。
对应的，第一终端根据DCI，确定接入网设备通过显性方式或隐性方式指示的数据传输参数，数据传输参数用于指示第一时频资源和/或第二时频资源。
当接入网设备通过显性方式向第一终端指示数据传输参数时，对应的第一终端接收接入网设备发送的DCI，DCI中携带有用于指示第一时频资源和第二时频资源的数据传输参数；向第二终端发送用于指示第二时频资源的数据传输参数。
即当DCI用于指示第一时频资源、第二时频资源和第四时频资源时，第一终端根据第一时频资源准备直连HARQ反馈信息的上报，并使用直连链路的第四时频资源将直连数据和SCI发送至第二终端，其中，SCI中携带有用于指示第二时频资源的数据传输参数。
在步骤305中，第二终端根据直连数据和SCI，通过PSFCH在第二时频资源中反馈的直连HARQ反馈信息。
第二时频资源可以是接入网设备显性配置的，也可以是接入网设备隐性指示的。
在一种可能的实现方式中，第二时频资源是接入网设备显性配置的，第二时频资源包括：预配置的第二终端向第一终端发送直连HARQ反馈所使用的PSFCH资源。
可选的，第二终端接收第一终端发送的直连数据和SCI，确定SCI所指示的第二时频资源。
在另一种可能的实现方式中，第二时频资源是接入网设备隐性指示的，即第二时频资源是第一终端或者第二终端根据定义的映射规则得到的。第二时频资源包括：第二终端根据传输直连数据所使用的第四时频资源映射得到的PSFCH资源；或者，第二终端根据第一终端上报直连HARQ反馈信息所使用的第一时频资源映射得到的PSFCH资源。
可选的，映射规则是预定义或者预配置的。
比如，第二时频资源与第四时频资源的映射规则包括：第二时频资源与第四时频资源的频域起始位置相同，第二时频资源所使用的时间单元为第四时频资源所使用的时间单元后的第K个时间单元。其中，K为正整数。
又比如，第二时频资源与第一时频资源的映射规则，包括：第二时频资源与第一时频资源的频域起始位置相同，第二时频资源所使用的时间单元为第一时频资源所使用的时间单元前的第M个时间单元。其中，M为正整数。本实施例对根据映射规则得到第二时频资源的方式不加以限定。
在另一种可能的实现方式中，第二时频资源是第一终端或者第二终端自主决定的。第二时频资源包括：第一终端或者第二终端根据第一时频资源和预设时序关系配置的PSFCH资源。
可选的，第一终端或者第二终端自主决定第二时频资源，第二时频资源满足第一终端上报直连HARQ反馈信息的时延要求。比如，预设时序关系包括第二时频资源所使用的时间单元早于第一时频资源所使用的时间单元，且两者之间的差值绝对值大于传输阈值。
其中，直连HARQ反馈信息用于指示直连数据对应的接收状态。直连数据对应的接收状态包括：ACK或NACK。
在步骤306中，第一终端将直连HARQ反馈信息上报至接入网设备。
可选的，第一终端接收第二终端反馈的直连HARQ反馈信息，通过PUCCH 在第一时频资源中将直连HARQ反馈信息上报至接入网设备。
可选的，第一时频资源可以是接入网设备显性配置的，也可以是接入网设备隐性指示的。
在一种可能的实现方式中，第二时频资源是接入网设备显性配置的，第一时频资源，包括：预配置的用于传输下行数据的上行HARQ反馈信息的PUCCH资源；或者，预配置的第一终端上报直连HARQ反馈所使用的PUCCH资源。
可选的，第一终端重用预配置的用于传输下行数据的上行HARQ反馈信息的PUCCH资源向接入网设备上报直连HARQ反馈信息。
可选的，第一终端接收到的DCI中携带有用于指示第一时频资源的数据传输参数，第二终端在所指示的第一时频资源中向接入网设备上报直连HARQ反馈信息。
在另一种可能的实现方式中，第一时频资源是接入网设备隐性指示的，即第一时频资源是第一终端根据定义的映射规则得到的。第一时频资源包括：根据传输DCI所使用的第三时频资源映射得到的PUCCH资源。
可选的，第一终端接收接入网设备发送的DCI，根据DCI传输所使用的第三时频资源，基于映射关系确定第一时频资源。
可选的，映射规则是预定义或者预配置的。
比如，第一时频资源与第三时频资源的映射规则包括：第一时频资源与第三时频资源的频域起始位置相同，第一时频资源所使用的时间单元为第三时频资源所使用的时间单元后的第N个时间单元。其中，N为正整数。
若在第一终端上报直连HARQ反馈信息前未接收到第二终端发送的直连HARQ反馈信息，则第一终端向接入网设备发送用于指示NACK的直连HARQ反馈信息。
在步骤307中，接入网设备接收第一终端上报的直连HARQ反馈信息。
可选的，接入网设备接收第一终端通过PUCCH在第一时频资源中上报的直连HARQ反馈信息。
综上所述，本实施例还通过第一时频资源包括预配置的用于传输下行数据的上行HARQ反馈信息的PUCCH资源，使得第一终端可以通过该重用PUCCH资源向接入网设备上报直连HARQ反馈信息，进而使得接入网设备无需单独为直连HARQ反馈信息配置专用的PUCCH资源集合，节省了接入网设备与第一终端之间的信令交互过程，也提高了用于传输下行数据的上行HARQ反馈 信息的PUCCH资源的利用率。
本实施例还通过接入网设备通过显性方式向所述第一终端指示数据传输参数，所述数据传输参数用于指示第一时频资源和/或第二时频资源，使得第一终端或者第二终端能够快速确定出传输直连HARQ反馈信息的时频资源，提高了HARQ反馈的效率。
本实施例还通过接入网设备通过隐性方式向所述第一终端指示数据传输参数，所述数据传输参数用于指示第一时频资源和/或第二时频资源；使得接入网设备、第一终端和第二终端之间信令交互的过程中无需携带有用于指示直连HARQ反馈信息的时频资源的显性字段，第一终端或者第二终端能够根据映射规则或者自主决定传输直连HARQ反馈信息的时频资源，进而减少了接入网设备、第一终端和第二终端之间信令交互的过程中所需携带的数据量。
下述为本公开装置实施例，可以用于执行本公开方法实施例。对于本公开装置实施例中未披露的细节，请参照本公开方法实施例。
图4是根据一示例性实施例示出的一种直连通信的数据传输装置的框图。该装置具有实现上述第一终端侧的方法示例的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该装置400可以包括：发送模块410、处理模块420和接收模块430。
发送模块410，被配置为根据接入网设备发送的DCI通过直连链路向第二终端发送直连数据；
接收模块430，被配置为接收第二终端反馈的直连HARQ反馈信息，直连HARQ反馈信息用于指示直连数据对应的接收状态；
发送模块410，被配置为将直连HARQ反馈信息上报至接入网设备。
可选的，发送模块410，还被配置为通过PUCCH在第一时频资源中将直连HARQ反馈信息上报至接入网设备。
可选的，第一时频资源，包括：
预配置的用于传输下行数据的上行HARQ反馈信息的PUCCH资源；或者，
预配置的第一终端上报直连HARQ反馈所使用的PUCCH资源；或者，
根据传输DCI所使用的第三时频资源映射得到的PUCCH资源。
可选的，接收模块430，还被配置为接收第二终端通过PSFCH在第二时频资源中反馈的直连HARQ反馈信息。
可选的，第二时频资源，包括：
预配置的第二终端向第一终端发送直连HARQ反馈所使用的PSFCH资源；或者，
第二终端根据传输直连数据所使用的第四时频资源映射得到的PSFCH资源；或者，
第二终端根据第一终端上报直连HARQ反馈信息所使用的第一时频资源映射得到的PSFCH资源；或者，
第一终端或者第二终端根据第一时频资源和预设时序关系配置的PSFCH资源。
可选的，该装置，还包括：
处理模块420，被配置为确定接入网设备通过显性方式或隐性方式指示的数据传输参数，数据传输参数用于指示第一时频资源和/或第二时频资源。
可选的，DCI中携带有用于指示第一时频资源和第二时频资源的数据传输参数；
发送模块410，还被配置为向第二终端发送用于指示第二时频资源的数据传输参数。
可选的，数据传输参数包括如下参数中的至少一种：
第一物理资源指示，第一物理资源指示用于表示第一终端上报直连HARQ反馈信息所使用的时域和/或频域资源；
第一反馈定时指示，第一反馈定时指示用于表示直连数据传输与第一终端上报对应的直连HARQ反馈信息的时间间隔；
第二物理资源指示，第二物理资源指示用于表示第二终端发送直连HARQ反馈信息所使用的时域和/或频域资源；
第二反馈定时指示，第一反馈定时指示用于表示直连数据传输与第二终端反馈对应的直连HARQ反馈信息的时间间隔。
可选的，该装置还包括：
接收模块430，还被配置为接收接入网设备发送的第一配置信令，第一配置信令用于指示直连HARQ反馈信息对应的PUCCH资源集合和/或第一时间间隔集合；
其中，PUCCH资源集合包括配置的用于上报直连HARQ反馈信息的多个PUCCH资源，第一时间间隔集合包括配置的直连数据传输与第一终端上报对 应的直连HARQ反馈信息的时间间隔。
可选的，第一配置信令为第一无线资源控制RRC信令，第一RRC信令包括第一新增字段和第二新增字段，第一新增字段用于指示PUCCH资源集合，第二新增字段用于指示第一时间间隔集合。
可选的，接收模块430，还被配置为接收接入网设备发送的第二配置信令，第二配置信令用于指示直连HARQ反馈信息对应的PSFCH资源集合和/或第二时间间隔集合；
其中，PSFCH资源集合包括配置的用于上报直连HARQ反馈信息的多个PSFCH资源，第二时间间隔集合包括配置的直连数据传输与第二终端反馈对应的直连HARQ反馈信息的时间间隔。
可选的，第二配置信令为第二无线资源控制RRC信令，第二RRC信令包括第三新增字段和第四新增字段，第三新增字段用于指示PSFCH资源集合，第四新增字段用于指示第二时间间隔集合。
综上所述，本实施例通过第一终端通过直连链路向第二终端发送直连数据；接收第二终端反馈的直连HARQ反馈信息，直连HARQ反馈信息用于指示直连数据对应的接收状态；将直连HARQ反馈信息上报至接入网设备；使得基于接入网设备调度的直连通信场景中，即便第一终端可能和第二终端处在不同的接入网设备覆盖范围之下，或者处在网络覆盖之外，直连HARQ反馈信息也可以先从第二终端传给第一终端，再由第一终端上报给接入网设备，保证了在直连通信场景中信息收发的成功率，且有助于提高数据传输的效率。
图5是根据一示例性实施例示出的一种直连通信的数据传输装置的框图。该装置具有实现上述接入网设备侧的方法示例的功能，功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该装置500可以包括：发送模块510和接收模块520。
发送模块510，被配置为向第一终端发送DCI，DCI用于指示第一终端通过直连链路向第二终端发送直连数据；接收第二终端反馈的直连HARQ反馈信息，直连HARQ反馈信息用于指示直连数据对应的接收状态；向接入网设备上报直连HARQ反馈信息；
接收模块520，被配置为接收第一终端上报的直连HARQ反馈信息。
可选的，接收模块520，还被配置为接收第一终端通过PUCCH在第一时 频资源中发送的直连HARQ反馈信息。
可选的，第一时频资源，包括：
预配置的用于传输下行数据的上行HARQ反馈信息的PUCCH资源；或者，
预配置的第一终端上报直连HARQ反馈所使用的PUCCH资源；或者，
根据传输DCI所使用的第三时频资源映射得到的PUCCH资源。
可选的，该装置，还包括：
发送模块510，还被配置为通过显性方式或隐性方式向第一终端指示数据传输参数，数据传输参数用于指示第一时频资源和/或第二时频资源。
可选的，DCI中携带有用于指示第一时频资源和第二时频资源的数据传输参数，DCI用于指示第一终端向第二终端发送用于指示第二时频资源的数据传输参数。
可选的，第二时频资源，包括：
预配置的第二终端向第一终端发送直连HARQ反馈所使用的PSFCH资源；或者，
第二终端根据传输直连数据所使用的第四时频资源映射得到的PSFCH资源；或者，
第二终端根据第一终端上报直连HARQ反馈信息所使用的第一时频资源映射得到的PSFCH资源；或者，
第一终端或者第二终端根据第一时频资源和预设时序关系配置的PSFCH资源。
可选的，数据传输参数包括如下参数中的至少一种：
第一物理资源指示，第一物理资源指示用于表示第一终端上报直连HARQ反馈信息所使用的时域和/或频域资源；
第一反馈定时指示，第一反馈定时指示用于表示直连数据传输与第一终端上报对应的直连HARQ反馈信息的时间间隔；
第二物理资源指示，第二物理资源指示用于表示第二终端发送直连HARQ反馈信息所使用的时域和/或频域资源；
第二反馈定时指示，第一反馈定时指示用于表示直连数据传输与第二终端反馈对应的直连HARQ反馈信息的时间间隔。
可选的，该装置还包括：
发送模块510，还被配置为向第一终端发送第一配置信令，第一配置信令 用于指示直连HARQ反馈信息对应的PUCCH资源集合和/或第一时间间隔集合；
其中，PUCCH资源集合包括配置的用于上报直连HARQ反馈信息的多个PUCCH资源，第一时间间隔集合包括配置的直连数据传输与第一终端上报对应的直连HARQ反馈信息的时间间隔。
可选的，第一配置信令为第一无线资源控制RRC信令，第一RRC信令包括第一新增字段和第二新增字段，第一新增字段用于指示PUCCH资源集合，第二新增字段用于指示第一时间间隔集合。
可选的，该装置还包括：
发送模块510，还被配置为向第一终端和/或第二终端发送第二配置信令，第二配置信令用于指示直连HARQ反馈信息对应的PSFCH资源集合和/或第二时间间隔集合；
其中，PSFCH资源集合包括配置的用于上报直连HARQ反馈信息的多个PSFCH资源，第二时间间隔集合包括配置的直连数据传输与第二终端反馈对应的直连HARQ反馈信息的时间间隔。
可选的，第二配置信令为第二无线资源控制RRC信令，第二RRC信令包括第三新增字段和第四新增字段，第三新增字段用于指示PSFCH资源集合，第四新增字段用于指示第二时间间隔集合。
需要说明的一点是，上述实施例提供的装置在实现其功能时，仅以上述各个功能模块的划分进行举例说明，实际应用中，可以根据实际需要而将上述功能分配由不同的功能模块完成，即将设备的内容结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
上述主要从接入网设备、第一终端和第二终端之间交互的角度对本公开实施例提供的方案进行了介绍。可以理解的是，设备(包括接入网设备、第一终端和第二终端)为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。结合本公开中所公开的实施例描述的各示例的单元及算法步骤，本公开实施例能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究 竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。本领域技术人员可以对每个特定的应用来使用不同的方法来实现所描述的功能，但是这种实现不应认为超出本公开实施例的技术方案的范围。
图6是根据一示例性实施例示出的一种终端600的框图。例如，终端600可以是移动电话，计算机，数字广播终端，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等。
参照图6，终端600可以包括以下一个或多个组件：处理组件602，存储器604，电源组件606，多媒体组件608，音频组件610，输入/输出(I/O)的接口612，传感器组件614，以及通信组件616。
处理组件602通常控制终端600的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理元件602可以包括一个或多个处理器620来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件602可以包括一个或多个模块，便于处理组件602和其他组件之间的交互。例如，处理部件602可以包括多媒体模块，以方便多媒体组件608和处理组件602之间的交互。
存储器604被配置为存储各种类型的数据以支持在设备600的操作。这些数据的示例包括用于在终端600上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器604可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电力组件606为终端600的各种组件提供电力。电力组件606可以包括电源管理系统，一个或多个电源，及其他与为终端600生成、管理和分配电力相关联的组件。
多媒体组件608包括在所述终端600和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手 势。所述触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与所述触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件608包括一个前置摄像头和/或后置摄像头。当设备600处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件610被配置为输出和/或输入音频信号。例如，音频组件610包括一个麦克风(MIC)，当终端600处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器604或经由通信组件616发送。在一些实施例中，音频组件610还包括一个扬声器，用于输出音频信号。
I/O接口612为处理组件602和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件614包括一个或多个传感器，用于为终端600提供各个方面的状态评估。例如，传感器组件614可以检测到设备600的打开/关闭状态，组件的相对定位，例如所述组件为终端600的显示器和小键盘，传感器组件614还可以检测终端600或终端600一个组件的位置改变，用户与终端600接触的存在或不存在，终端600方位或加速/减速和终端600的温度变化。传感器组件614可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件614还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件614还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件616被配置为便于终端600和其他设备之间有线或无线方式的通信。终端600可以接入基于通信标准的无线网络，如WiFi，2G或3G，或它们的组合。在一个示例性实施例中，通信部件616经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，所述通信部件616还包括近场通信(NFC)模块，以促进短程通信。
在示例性实施例中，终端600可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处 理器或其他电子元件实现，用于执行上述方法。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器604，上述指令可由终端600的处理器620执行以完成上述方法。例如，所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
一种非临时性计算机可读存储介质，当所述非临时性计算机存储介质中的指令由第一终端的处理器执行时，使得第一终端能够执行上述数据传输方法。
图7是根据一示例性实施例示出的一种接入网设备700的框图。
接入网设备700可以包括：处理器701、接收机702、发射机703和存储器704。接收机702、发射机703和存储器704分别通过总线与处理器701连接。
其中，处理器701包括一个或者一个以上处理核心，处理器701通过运行软件程序以及模块以执行本公开实施例提供的传输配置方法中接入网设备所执行的方法。存储器704可用于存储软件程序以及模块。具体的，存储器704可存储操作系统7041、至少一个功能所需的应用程序模块7042。接收机702用于接收其他设备发送的通信数据，发射机703用于向其他设备发送通信数据。
本公开一示例性实施例还提供了一种直连通信的数据传输系统，所述数据传输系统包括终端和接入网设备；
所述终端如图4所示实施例提供的数据传输装置；
所述接入网如图5所示实施例提供的数据传输装置。
本公开一示例性实施例还提供了一种直连通信的数据传输系统，所述数据传输系统包括终端和接入网设备；
所述终端如如图6所示实施例提供的终端；
所述接入网如图7所示实施例提供的接入网设备。
本公开一示例性实施例还提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有至少一条指令、至少一段程序、代码集或指令集，所述至少一条指令、所述至少一段程序、所述代码集或指令集由所述处理器加载并执 行以实现上述各个方法实施例提供的直连通信的数据传输方法中由第一终端或者接入网设备执行的步骤。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (51)

  1. 一种直连通信的数据传输方法，其特征在于，用于第一终端中，所述方法包括：
    根据接入网设备发送的下行控制信息DCI通过直连链路向第二终端发送直连数据；
    接收所述第二终端反馈的直连混合自动重传请求HARQ反馈信息，所述直连HARQ反馈信息用于指示所述直连数据对应的接收状态；
    将所述直连HARQ反馈信息上报至接入网设备。
  2. 根据权利要求1所述的方法，其特征在于，所述将所述直连HARQ反馈信息上报至接入网设备，包括：
    通过物理上行控制信道PUCCH在第一时频资源中将所述直连HARQ反馈信息上报至所述接入网设备。
  3. 根据权利要求2所述的方法，其特征在于，所述第一时频资源，包括：
    预配置的用于传输下行数据的上行HARQ反馈信息的PUCCH资源；或者，
    预配置的所述第一终端上报所述直连HARQ反馈所使用的PUCCH资源；或者，
    根据传输所述DCI所使用的第三时频资源映射得到的PUCCH资源。
  4. 根据权利要求1所述的方法，其特征在于，所述接收所述第二终端反馈的直连HARQ反馈信息，包括：
    接收所述第二终端通过直连反馈信道PSFCH在第二时频资源中反馈的所述直连HARQ反馈信息。
  5. 根据权利要求4所述的方法，其特征在于，所述第二时频资源，包括：
    预配置的所述第二终端向所述第一终端发送所述直连HARQ反馈所使用的PSFCH资源；或者，
    所述第二终端根据传输所述直连数据所使用的第四时频资源映射得到的PS FCH资源；或者，
    所述第二终端根据所述第一终端上报所述直连HARQ反馈信息所使用的第一时频资源映射得到的PSFCH资源；或者，
    所述第一终端或者所述第二终端根据所述第一时频资源和预设时序关系配置的PSFCH资源。
  6. 根据权利要求2或4所述的方法，其特征在于，所述方法，还包括：
    确定所述接入网设备通过显性方式或隐性方式指示的数据传输参数，所述数据传输参数用于指示第一时频资源和/或第二时频资源。
  7. 根据权利要求6所述的方法，其特征在于，所述DCI中携带有用于指示第一时频资源和第二时频资源的数据传输参数；所述方法还包括：
    向所述第二终端发送用于指示所述第二时频资源的数据传输参数。
  8. 根据权利要求6所述的方法，其特征在于，所述数据传输参数包括如下参数中的至少一种：
    第一物理资源指示，所述第一物理资源指示用于表示所述第一终端上报所述直连HARQ反馈信息所使用的时域和/或频域资源；
    第一反馈定时指示，所述第一反馈定时指示用于表示所述直连数据传输与所述第一终端上报对应的直连HARQ反馈信息的时间间隔；
    第二物理资源指示，所述第二物理资源指示用于表示所述第二终端发送所述直连HARQ反馈信息所使用的时域和/或频域资源；
    第二反馈定时指示，所述第一反馈定时指示用于表示所述直连数据传输与所述第二终端反馈对应的直连HARQ反馈信息的时间间隔。
  9. 根据权利要求2所述的方法，其特征在于，所述方法还包括：
    接收所述接入网设备发送的第一配置信令，所述第一配置信令用于指示所述直连HARQ反馈信息对应的PUCCH资源集合和/或第一时间间隔集合；
    其中，所述PUCCH资源集合包括配置的用于上报所述直连HARQ反馈信息的多个PUCCH资源，所述第一时间间隔集合包括配置的直连数据传输与所述第一终端上报对应的直连HARQ反馈信息的时间间隔。
  10. 根据权利要求9所述的方法，其特征在于，所述第一配置信令为第一无线资源控制RRC信令，所述第一RRC信令包括第一新增字段和第二新增字段，所述第一新增字段用于指示所述PUCCH资源集合，所述第二新增字段用于指示所述第一时间间隔集合。
  11. 根据权利要求4所述的方法，其特征在于，所述方法还包括：
    接收所述接入网设备发送的第二配置信令，所述第二配置信令用于指示所述直连HARQ反馈信息对应的直连反馈信道PSFCH资源集合和/或第二时间间隔集合；
    其中，所述PSFCH资源集合包括配置的用于上报所述直连HARQ反馈信息的多个PSFCH资源，所述第二时间间隔集合包括配置的所述直连数据传输与所述第二终端反馈对应的直连HARQ反馈信息的时间间隔。
  12. 根据权利要求11所述的方法，其特征在于，所述第二配置信令为第二无线资源控制RRC信令，所述第二RRC信令包括第三新增字段和第四新增字段，所述第三新增字段用于指示所述PSFCH资源集合，所述第四新增字段用于指示所述第二时间间隔集合。
  13. 一种直连通信的数据传输方法，其特征在于，用于接入网设备中，所述方法包括：
    向第一终端发送下行控制信息DCI，所述DCI用于指示所述第一终端通过直连链路向第二终端发送直连数据；接收所述第二终端反馈的直连混合自动重传请求HARQ反馈信息，所述直连HARQ反馈信息用于指示所述直连数据对应的接收状态；向所述接入网设备上报所述直连HARQ反馈信息；
    接收所述第一终端上报的所述直连HARQ反馈信息。
  14. 根据权利要求13所述的方法，其特征在于，所述接收所述第一终端上报的所述直连HARQ反馈信息，包括：
    接收所述第一终端通过物理上行控制信道PUCCH在第一时频资源中发送的所述直连HARQ反馈信息。
  15. 根据权利要求14所述的方法，其特征在于，所述第一时频资源，包括：
    预配置的用于传输下行数据的上行HARQ反馈信息的PUCCH资源；或者，
    预配置的所述第一终端上报所述直连HARQ反馈所使用的PUCCH资源；或者，
    根据传输下行控制信息DCI所使用的第三时频资源映射得到的PUCCH资源。
  16. 根据权利要求13所述的方法，其特征在于，所述方法，还包括：
    通过显性方式或隐性方式向所述第一终端指示数据传输参数，所述数据传输参数用于指示第一时频资源和/或第二时频资源。
  17. 根据权利要求16所述的方法，其特征在于，所述DCI中携带有用于指示第一时频资源和第二时频资源的数据传输参数，所述DCI用于指示所述第一终端向所述第二终端发送用于指示所述第二时频资源的数据传输参数。
  18. 根据权利要求16所述的方法，其特征在于，所述第二时频资源，包括：
    预配置的所述第二终端向所述第一终端发送所述直连HARQ反馈所使用的PSFCH资源；或者，
    所述第二终端根据传输所述直连数据所使用的第四时频资源映射得到的PS FCH资源；或者，
    所述第二终端根据所述第一终端上报所述直连HARQ反馈信息所使用的第一时频资源映射得到的PSFCH资源；或者，
    所述第一终端或者所述第二终端根据所述第一时频资源和预设时序关系配置的PSFCH资源。
  19. 根据权利要求16所述的方法，其特征在于，所述数据传输参数包括如下参数中的至少一种：
    第一物理资源指示，所述第一物理资源指示用于表示所述第一终端上报所述直连HARQ反馈信息所使用的时域和/或频域资源；
    第一反馈定时指示，所述第一反馈定时指示用于表示所述直连数据传输与所述第一终端上报对应的直连HARQ反馈信息的时间间隔；
    第二物理资源指示，所述第二物理资源指示用于表示所述第二终端发送所述直连HARQ反馈信息所使用的时域和/或频域资源；
    第二反馈定时指示，所述第一反馈定时指示用于表示所述直连数据传输与所述第二终端反馈对应的直连HARQ反馈信息的时间间隔。
  20. 根据权利要求13所述的方法，其特征在于，所述方法还包括：
    向所述第一终端发送第一配置信令，所述第一配置信令用于指示所述直连HARQ反馈信息对应的PUCCH资源集合和/或第一时间间隔集合；
    其中，所述PUCCH资源集合包括配置的用于上报所述直连HARQ反馈信息的多个PUCCH资源，所述第一时间间隔集合包括配置的直连数据传输与所述第一终端上报对应的直连HARQ反馈信息的时间间隔。
  21. 根据权利要求20所述的方法，其特征在于，所述第一配置信令为第一无线资源控制RRC信令，所述第一RRC信令包括第一新增字段和第二新增字段，所述第一新增字段用于指示所述PUCCH资源集合，所述第二新增字段用于指示所述第一时间间隔集合。
  22. 根据权利要求13所述的方法，其特征在于，所述方法还包括：
    向所述第一终端和/或所述第二终端发送第二配置信令，所述第二配置信令用于指示所述直连HARQ反馈信息对应的直连反馈信道PSFCH资源集合和/或第二时间间隔集合；
    其中，所述PSFCH资源集合包括配置的用于上报所述直连HARQ反馈信息的多个PSFCH资源，所述第二时间间隔集合包括配置的所述直连数据传输与所述第二终端反馈对应的直连HARQ反馈信息的时间间隔。
  23. 根据权利要求22所述的方法，其特征在于，所述第二配置信令为第二无线资源控制RRC信令，所述第二RRC信令包括第三新增字段和第四新增字段，所述第三新增字段用于指示所述PSFCH资源集合，所述第四新增字段用于指示所述第二时间间隔集合。
  24. 一种直连通信的数据传输装置，其特征在于，用于第一终端中，所述 装置包括：
    发送模块，被配置为根据接入网设备发送的下行控制信息DCI通过直连链路向第二终端发送直连数据；
    接收模块，被配置为接收所述第二终端反馈的直连混合自动重传请求HARQ反馈信息，所述直连HARQ反馈信息用于指示所述直连数据对应的接收状态；
    所述发送模块，被配置为将所述直连HARQ反馈信息上报至接入网设备。
  25. 根据权利要求24所述的装置，其特征在于，所述发送模块，还被配置为通过物理上行控制信道PUCCH在第一时频资源中将所述直连HARQ反馈信息上报至所述接入网设备。
  26. 根据权利要求25所述的装置，其特征在于，所述第一时频资源，包括：
    预配置的用于传输下行数据的上行HARQ反馈信息的PUCCH资源；或者，
    预配置的所述第一终端上报所述直连HARQ反馈所使用的PUCCH资源；或者，
    根据传输所述DCI所使用的第三时频资源映射得到的PUCCH资源。
  27. 根据权利要求24所述的装置，其特征在于，所述接收模块，还被配置为接收所述第二终端通过直连反馈信道PSFCH在第二时频资源中反馈的所述直连HARQ反馈信息。
  28. 根据权利要求27所述的装置，其特征在于，所述第二时频资源，包括：
    预配置的所述第二终端向所述第一终端发送所述直连HARQ反馈所使用的PSFCH资源；或者，
    所述第二终端根据传输所述直连数据所使用的第四时频资源映射得到的PS FCH资源；或者，
    所述第二终端根据所述第一终端上报所述直连HARQ反馈信息所使用的第一时频资源映射得到的PSFCH资源；或者，
    所述第一终端或者所述第二终端根据所述第一时频资源和预设时序关系配置的PSFCH资源。
  29. 根据权利要求25或26所述的装置，其特征在于，所述装置，还包括：
    处理模块，被配置为确定所述接入网设备通过显性方式或隐性方式指示的数据传输参数，所述数据传输参数用于指示第一时频资源和/或第二时频资源。
  30. 根据权利要求29所述的装置，其特征在于，所述DCI中携带有用于指示第一时频资源和第二时频资源的数据传输参数；
    所述发送模块，还被配置为向所述第二终端发送用于指示所述第二时频资源的数据传输参数。
  31. 根据权利要求29所述的装置，其特征在于，所述数据传输参数包括如下参数中的至少一种：
    第一物理资源指示，所述第一物理资源指示用于表示所述第一终端上报所述直连HARQ反馈信息所使用的时域和/或频域资源；
    第一反馈定时指示，所述第一反馈定时指示用于表示所述直连数据传输与所述第一终端上报对应的直连HARQ反馈信息的时间间隔；
    第二物理资源指示，所述第二物理资源指示用于表示所述第二终端发送所述直连HARQ反馈信息所使用的时域和/或频域资源；
    第二反馈定时指示，所述第一反馈定时指示用于表示所述直连数据传输与所述第二终端反馈对应的直连HARQ反馈信息的时间间隔。
  32. 根据权利要求25所述的装置，其特征在于，所述装置还包括：
    所述接收模块，还被配置为接收所述接入网设备发送的第一配置信令，所述第一配置信令用于指示所述直连HARQ反馈信息对应的PUCCH资源集合和/或第一时间间隔集合；
    其中，所述PUCCH资源集合包括配置的用于上报所述直连HARQ反馈信息的多个PUCCH资源，所述第一时间间隔集合包括配置的直连数据传输与所述第一终端上报对应的直连HARQ反馈信息的时间间隔。
  33. 根据权利要求32所述的装置，其特征在于，所述第一配置信令为第一无线资源控制RRC信令，所述第一RRC信令包括第一新增字段和第二新增字 段，所述第一新增字段用于指示所述PUCCH资源集合，所述第二新增字段用于指示所述第一时间间隔集合。
  34. 根据权利要求27所述的装置，其特征在于，所述装置还包括：
    所述接收模块，还被配置为接收所述接入网设备发送的第二配置信令，所述第二配置信令用于指示所述直连HARQ反馈信息对应的直连反馈信道PSFCH资源集合和/或第二时间间隔集合；
    其中，所述PSFCH资源集合包括配置的用于上报所述直连HARQ反馈信息的多个PSFCH资源，所述第二时间间隔集合包括配置的所述直连数据传输与所述第二终端反馈对应的直连HARQ反馈信息的时间间隔。
  35. 根据权利要求34所述的装置，其特征在于，所述第二配置信令为第二无线资源控制RRC信令，所述第二RRC信令包括第三新增字段和第四新增字段，所述第三新增字段用于指示所述PSFCH资源集合，所述第四新增字段用于指示所述第二时间间隔集合。
  36. 一种直连通信的数据传输装置，其特征在于，用于接入网设备中，所述装置包括：
    发送模块，被配置为向第一终端发送下行控制信息DCI，所述DCI用于指示所述第一终端通过直连链路向第二终端发送直连数据；接收所述第二终端反馈的直连混合自动重传请求HARQ反馈信息，所述直连HARQ反馈信息用于指示所述直连数据对应的接收状态；向所述接入网设备上报所述直连HARQ反馈信息；
    接收模块，被配置为接收所述第一终端上报的所述直连HARQ反馈信息。
  37. 根据权利要求36所述的装置，其特征在于，所述接收模块，还被配置为接收所述第一终端通过物理上行控制信道PUCCH在第一时频资源中发送的所述直连HARQ反馈信息。
  38. 根据权利要求37所述的装置，其特征在于，所述第一时频资源，包括：
    预配置的用于传输下行数据的上行HARQ反馈信息的PUCCH资源；或者，
    预配置的所述第一终端上报所述直连HARQ反馈所使用的PUCCH资源；或者，
    根据传输下行控制信息DCI所使用的第三时频资源映射得到的PUCCH资源。
  39. 根据权利要求36所述的装置，其特征在于，所述装置，还包括：
    所述发送模块，还被配置为通过显性方式或隐性方式向所述第一终端指示数据传输参数，所述数据传输参数用于指示第一时频资源和/或第二时频资源。
  40. 根据权利要求39所述的装置，其特征在于，所述DCI中携带有用于指示第一时频资源和第二时频资源的数据传输参数，所述DCI用于指示所述第一终端向所述第二终端发送用于指示所述第二时频资源的数据传输参数。
  41. 根据权利要求39所述的装置，其特征在于，所述第二时频资源，包括：
    预配置的所述第二终端向所述第一终端发送所述直连HARQ反馈所使用的PSFCH资源；或者，
    所述第二终端根据传输所述直连数据所使用的第四时频资源映射得到的PS FCH资源；或者，
    所述第二终端根据所述第一终端上报所述直连HARQ反馈信息所使用的第一时频资源映射得到的PSFCH资源；或者，
    所述第一终端或者所述第二终端根据所述第一时频资源和预设时序关系配置的PSFCH资源。
  42. 根据权利要求39所述的装置，其特征在于，所述数据传输参数包括如下参数中的至少一种：
    第一物理资源指示，所述第一物理资源指示用于表示所述第一终端上报所述直连HARQ反馈信息所使用的时域和/或频域资源；
    第一反馈定时指示，所述第一反馈定时指示用于表示所述直连数据传输与所述第一终端上报对应的直连HARQ反馈信息的时间间隔；
    第二物理资源指示，所述第二物理资源指示用于表示所述第二终端发送所述直连HARQ反馈信息所使用的时域和/或频域资源；
    第二反馈定时指示，所述第一反馈定时指示用于表示所述直连数据传输与所述第二终端反馈对应的直连HARQ反馈信息的时间间隔。
  43. 根据权利要求36所述的装置，其特征在于，所述装置还包括：
    所述发送模块，还被配置为向所述第一终端发送第一配置信令，所述第一配置信令用于指示所述直连HARQ反馈信息对应的PUCCH资源集合和/或第一时间间隔集合；
    其中，所述PUCCH资源集合包括配置的用于上报所述直连HARQ反馈信息的多个PUCCH资源，所述第一时间间隔集合包括配置的直连数据传输与所述第一终端上报对应的直连HARQ反馈信息的时间间隔。
  44. 根据权利要求43所述的装置，其特征在于，所述第一配置信令为第一无线资源控制RRC信令，所述第一RRC信令包括第一新增字段和第二新增字段，所述第一新增字段用于指示所述PUCCH资源集合，所述第二新增字段用于指示所述第一时间间隔集合。
  45. 根据权利要求36所述的装置，其特征在于，所述装置还包括：
    所述发送模块，还被配置为向所述第一终端和/或所述第二终端发送第二配置信令，所述第二配置信令用于指示所述直连HARQ反馈信息对应的直连反馈信道PSFCH资源集合和/或第二时间间隔集合；
    其中，所述PSFCH资源集合包括配置的用于上报所述直连HARQ反馈信息的多个PSFCH资源，所述第二时间间隔集合包括配置的所述直连数据传输与所述第二终端反馈对应的直连HARQ反馈信息的时间间隔。
  46. 根据权利要求45所述的装置，其特征在于，所述第二配置信令为第二无线资源控制RRC信令，所述第二RRC信令包括第三新增字段和第四新增字段，所述第三新增字段用于指示所述PSFCH资源集合，所述第四新增字段用于指示所述第二时间间隔集合。
  47. 一种终端，其特征在于，所述终端包括：
    处理器；
    与所述处理器相连的收发器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为加载并执行所述可执行指令以实现如权利要求1至12任一所述的直连通信的数据传输方法。
  48. 一种接入网设备，其特征在于，所述接入网设备包括：
    处理器；
    与所述处理器相连的收发器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为加载并执行所述可执行指令以实现如权利要求13至23任一所述的直连通信的数据传输方法。
  49. 一种直连通信的数据传输系统，其特征在于，所述数据传输系统包括终端和接入网设备；
    所述终端如权利要求24至35任一所述的数据传输装置；
    所述接入网设备如权利要求36至46任一所述的数据传输装置。
  50. 一种直连通信的数据传输系统，其特征在于，所述数据传输系统包括终端和接入网设备；
    所述终端如权利要求47所述的终端；
    所述接入网设备如权利要求48所述的接入网设备。
  51. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有至少一条指令、至少一段程序、代码集或指令集，所述至少一条指令、所述至少一段程序、所述代码集或指令集由所述处理器加载并执行以实现如权利要求1至23任一所述的直连通信的数据传输方法。
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