WO2021022517A1 - Harq反馈增强的方法及装置、通信设备及存储介质 - Google Patents

Harq反馈增强的方法及装置、通信设备及存储介质 Download PDF

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Publication number
WO2021022517A1
WO2021022517A1 PCT/CN2019/099611 CN2019099611W WO2021022517A1 WO 2021022517 A1 WO2021022517 A1 WO 2021022517A1 CN 2019099611 W CN2019099611 W CN 2019099611W WO 2021022517 A1 WO2021022517 A1 WO 2021022517A1
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WIPO (PCT)
Prior art keywords
harq feedback
indication information
transmission block
terminal
block
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PCT/CN2019/099611
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English (en)
French (fr)
Inventor
朱亚军
洪伟
李俊丽
李勇
Original Assignee
北京小米移动软件有限公司
北京邮电大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 北京小米移动软件有限公司, 北京邮电大学 filed Critical 北京小米移动软件有限公司
Priority to US17/632,967 priority Critical patent/US20220294568A1/en
Priority to CN201980001670.6A priority patent/CN110832800B/zh
Priority to PCT/CN2019/099611 priority patent/WO2021022517A1/zh
Publication of WO2021022517A1 publication Critical patent/WO2021022517A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—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
    • H04L1/1812—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
    • 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
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1832—Details of sliding window management
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1861—Physical mapping arrangements
    • 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
    • H04L5/0053—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
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • 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

Definitions

  • This application relates to the field of wireless communication technology, but is not limited to the field of wireless communication technology, and in particular to a method and device for feedback enhancement of Hybrid Automatic Repeat request (HARQ), communication equipment and storage medium.
  • HARQ Hybrid Automatic Repeat request
  • NR-based unlicensed frequency band NR-U access and License Assisted Access correspond to two network technologies that use NR air interface and Long Term Evolution (LTE) air interface in the unlicensed frequency band, respectively .
  • LTE Long Term Evolution
  • RAT Radio Access Technology
  • CCA clear channel assessment
  • the probability of missed detection of the physical downlink control channel/physical uplink control channel is very low, and the loss of 4 consecutive PDCCHs can be basically ignored.
  • the hidden node problem caused by it may cause the uplink (UL, Up Link) LBT to fail, which increases the probability of missed PDCCH/PUCCH detection and the number of consecutive lost PDCCHs.
  • PDSCH Physical Downlink Shared Channel
  • COT Channel Occupancy Time
  • the embodiment of the application discloses a HARQ feedback enhancement method and device, communication equipment and storage medium.
  • a HARQ feedback enhancement method wherein the method includes:
  • the terminal Send the downlink control information including the first indication information to the terminal; where the first indication information is used to indicate that in the current hybrid automatic repeat request HARQ feedback window, the subframe after the current subframe and the subframe after the current subcarrier On the subcarrier, the number of downlink transport blocks received by the terminal.
  • the method further includes:
  • the downlink control information further includes second indication information; wherein, the second indication information is used to instruct the terminal to send HARQ feedback of the first transmission block and/or HARQ feedback of the second transmission block; wherein, the The first transmission block is a transmission block decoded by a first codebook currently used; the second transmission block is a transmission block decoded by a second codebook previously used by the first codebook.
  • the method further includes:
  • the second indication information has a first indication value, and the first indication value is used to instruct the terminal to send the HARQ of the first transport block Feedback
  • the second indication information has a second indication value, and the second indication value is used to instruct the terminal to send the first transmission block and the The HARQ feedback of the second transport block.
  • the method further includes:
  • the numerical information determined by the number of bits occupied by the second indication information is used to instruct the terminal to determine the HARQ feedback when sending the HARQ feedback of the first transport block and the HARQ feedback of the second transport block The number of the second transmission block.
  • the method further includes:
  • the third indication information is used to indicate that in the HARQ feedback window, in the current subframe and the subframe before the current subframe and on the current subcarrier and the subcarrier before the current subcarrier, the terminal receives the downlink transport block Quantity.
  • HARQ feedback enhancement method wherein the method includes:
  • the first indication information determine the number of received downlink transport blocks on the subframe after the current subframe and the subcarrier after the current subcarrier within the current hybrid automatic repeat request HARQ feedback window.
  • the downlink control information further includes second indication information; the method further includes:
  • the second indication information send the HARQ feedback of the first transport block and/or the HARQ feedback of the second transport block; wherein, the first transport block is the currently used transport block decoded by the first codebook;
  • the second transmission block is a transmission block decoded by the second codebook used before the first codebook.
  • the method further includes:
  • the numerical information determined by the number of bits occupied by the second indication information when the HARQ feedback of the first transmission block and the HARQ feedback of the second transmission block are sent, it is determined to perform the second transmission of the HARQ feedback The number of blocks.
  • the downlink control information further includes third indication information
  • the method further includes: when the second indication information indicates to send HARQ feedback for the first transport block and HARQ feedback for the second transport block, It is determined that the third indication information is the continuous counting mode between HARQ feedback windows; wherein, the third indication information is used to indicate that in the current subframe and the subframe before the current subframe and the current The number of downlink transport blocks received by the terminal on the subcarrier and the subcarrier before the current subcarrier; and the HARQ feedback feedback content is determined according to the first indication information and the third indication information.
  • a HARQ feedback enhancement device wherein the device includes a sending module configured to send downlink control information including the first indication information to the terminal; wherein, The first indication information is used to indicate the number of downlink transport blocks received by the terminal on the subframe after the current subframe and the subcarrier after the current subcarrier within the current hybrid automatic repeat request HARQ feedback window.
  • the sending module is further configured such that the downlink control information further includes second indication information; wherein, the second indication information is used to instruct the terminal to send HARQ feedback and/or the first transport block Or HARQ feedback of the second transmission block; wherein, the first transmission block is the transmission block decoded by the first codebook currently used; the second transmission block is the second codebook previously used by the first codebook The decoded transport block.
  • the downlink control information further includes second indication information; wherein, the second indication information is used to instruct the terminal to send HARQ feedback and/or the first transport block Or HARQ feedback of the second transmission block; wherein, the first transmission block is the transmission block decoded by the first codebook currently used; the second transmission block is the second codebook previously used by the first codebook The decoded transport block.
  • the sending module is further configured to: when the HARQ feedback of the second transport block received in advance is successfully received, the second indication information has a first indication value, and the first indication value is used for Instruct the terminal to send the HARQ feedback of the first transport block; when reception of the HARQ feedback of the second transport block received in advance fails, the second indication information has a second indication value, and the second indication value Used to instruct the terminal to send HARQ feedback of the first transmission block and the second transmission block.
  • the sending module is further configured to use numerical information determined by the number of bits occupied by the second indication information to indicate that the terminal is sending HARQ feedback of the first transport block and the first transmission block.
  • the number of the second transmission blocks for which the HARQ feedback is performed is determined.
  • the downlink control information includes third indication information
  • the sending module is further configured to set the third indication information as a counting mode between HARQ feedback windows, wherein, when the first indication information is received in advance, When the HARQ feedback reception of the second transport block fails, the counting mode between the HARQ feedback windows is the continuous counting mode, and the third indication information is used to indicate the current subframe and the subframe before the current subframe within the HARQ feedback window. The number of downlink transport blocks received by the terminal on the current subcarrier and the subcarrier before the current subcarrier.
  • a HARQ feedback enhancement device wherein the device includes a receiving module, and the receiving module is configured to receive downlink control information including the first indication information; An indication information that determines the number of downlink transport blocks received on the subframe after the current subframe and the subcarrier after the current subcarrier within the current hybrid automatic repeat request HARQ feedback window.
  • the downlink control information further includes second indication information
  • the receiving module is further configured to send HARQ feedback of the first transmission block and/or HARQ of the second transmission block according to the second indication information.
  • Feedback wherein, the first transmission block is a transmission block decoded by a first codebook currently used; the second transmission block is a transmission block decoded by a second codebook used before the first codebook.
  • the receiving module is further configured to send the HARQ feedback of the first transmission block and the HARQ feedback of the second transmission block according to the numerical information determined by the number of bits occupied by the second indication information. During the feedback, the number of the second transport blocks for HARQ feedback is determined.
  • the downlink control information further includes third indication information
  • the receiving module is further configured to send HARQ feedback for the first transport block and HARQ feedback for the second transport block when the second indication information indicates , It is determined that the third indication information is a continuous counting mode between HARQ feedback windows; wherein, the third indication information is used to indicate that in the continuous HARQ feedback window, the current subframe and the subframe before the current subframe and The number of downlink transport blocks received by the terminal on the current subcarrier and the subcarrier before the current subcarrier; and the HARQ feedback feedback content is determined according to the first indication information and the third indication information.
  • a communication device including:
  • the processor is respectively connected to the antenna and the memory, and is used to control the antenna to send and receive wireless signals by executing the executable program stored on the memory, and can execute the HARQ feedback enhancement method provided by any of the foregoing technical solutions step.
  • a non-transitory computer-readable storage medium stores an executable program, wherein when the executable program is executed by a processor Steps of implementing the HARQ feedback enhancement method provided by any of the foregoing technical solutions.
  • the HARQ feedback enhancement method includes: sending downlink control information including first indication information to the terminal; wherein, the first indication information is used to indicate the current hybrid automatic reset In the HARQ feedback window of the transmission request, the number of downlink transport blocks received by the terminal on the subframe after the current subframe and the subcarrier after the current subcarrier.
  • the terminal can determine, according to the first indication information, the downlink transmission that the terminal still needs to receive in the subframe after the current subframe and on the subcarriers after the current subcarrier in the current hybrid automatic repeat request HARQ feedback window The number of blocks.
  • the terminal can determine each of the downlink transport blocks sent by the base station according to the number of downlink transport blocks that need to be received and the information about the downlink transport blocks that the terminal has actually received. Whether the downlink transmission block is lost, reduces the problem that the terminal does not know the number of the downlink transmission block sent by the base station and causes the feedback content to be unclear when performing HARQ feedback.
  • FIG. 1 is a schematic structural diagram of a wireless communication system provided by an embodiment of the disclosure
  • Fig. 2 is a schematic diagram of a HARQ feedback scenario provided by an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of a HARQ feedback scenario provided by another embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of a HARQ feedback scenario provided by another embodiment of the present disclosure.
  • FIG. 5a is a schematic diagram of a HARQ feedback scenario provided by another embodiment of the present disclosure.
  • FIG. 5b is a schematic diagram of a HARQ feedback scenario provided by another embodiment of the present disclosure.
  • FIG. 5c is a schematic diagram of a HARQ feedback scenario provided by another embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of a HARQ feedback scenario provided by another embodiment of the present disclosure.
  • Fig. 7a is a schematic diagram of a HARQ feedback scenario provided by another embodiment of the present disclosure.
  • FIG. 7b is a schematic diagram of a HARQ feedback scenario provided by another embodiment of the present disclosure.
  • FIG. 7c is a schematic diagram of a HARQ feedback scenario provided by another embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of a HARQ feedback enhancement method provided by an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of a HARQ feedback enhancement method provided by another embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of a HARQ feedback scenario provided by an embodiment of the disclosure.
  • FIG. 11a is a schematic diagram of a HARQ feedback scenario provided by another embodiment of the present disclosure.
  • Fig. 11b is a schematic diagram of a HARQ feedback scenario provided by another embodiment of the present disclosure.
  • FIG. 11c is a schematic diagram of a HARQ feedback scenario provided by another embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a terminal provided by an embodiment of the disclosure.
  • FIG. 13 is a schematic structural diagram of a base station provided by an embodiment of the disclosure.
  • first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as second information, and similarly, the second information may also be referred to as first information.
  • the words "if” and “if” as used herein can be interpreted as “when” or “when” or “in response to certainty”.
  • Fig. 1 shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present disclosure.
  • the wireless communication system is a communication system based on cellular mobile communication technology, and the wireless communication system may include several terminals 11 and several base stations 12.
  • the terminal 11 may be a device that provides voice and/or data connectivity to the user.
  • the terminal 11 can communicate with one or more core networks via a radio access network (RAN).
  • RAN radio access network
  • the terminal 11 can be an IoT terminal, such as a sensor device, a mobile phone (or “cellular” phone), and
  • the computer of the Internet of Things terminal for example, may be a fixed, portable, pocket-sized, handheld, computer-built-in or vehicle-mounted device.
  • station For example, station (Station, STA), subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), mobile station (mobile), remote station (remote station), access point, remote terminal ( remote terminal), access terminal (access terminal), user device (user terminal), user agent (user agent), user equipment (user device), or user terminal (user equipment, UE).
  • the terminal 11 may also be a device of an unmanned aerial vehicle.
  • the terminal 11 may also be an in-vehicle device, for example, it may be a trip computer with a wireless communication function, or a wireless communication device external to the trip computer.
  • the terminal 11 may also be a roadside device, for example, it may be a street lamp, signal lamp, or other roadside device with a wireless communication function.
  • the base station 12 may be a network side device in a wireless communication system.
  • the wireless communication system may be the 4th generation mobile communication (4G) system, also known as the Long Term Evolution (LTE) system; or, the wireless communication system may also be a 5G system, Also known as the new radio (NR) system or 5G NR system.
  • the wireless communication system may also be the next-generation system of the 5G system.
  • the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network). Or, MTC system.
  • the base station 12 may be an evolved base station (eNB) used in a 4G system.
  • the base station 12 may also be a base station (gNB) adopting a centralized and distributed architecture in the 5G system.
  • the base station 12 adopts a centralized and distributed architecture it usually includes a centralized unit (CU) and at least two distributed units (DU).
  • the centralized unit is provided with a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, a radio link layer control protocol (Radio Link Control, RLC) layer, and a media access control (Media Access Control, MAC) layer.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC media access control
  • a physical (Physical, PHY) layer protocol stack is provided in the unit, and the embodiment of the present disclosure does not limit the specific implementation of the base station 12.
  • a wireless connection can be established between the base station 12 and the terminal 11 through a wireless air interface.
  • the wireless air interface is a wireless air interface based on the fourth-generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as The wireless air interface is a new air interface; or, the wireless air interface may also be a wireless air interface based on 5G-based next-generation mobile communication network technology standards.
  • E2E (End to End, end-to-end) connections may also be established between the terminals 11.
  • V2V (vehicle to vehicle) communication V2I (vehicle to Infrastructure) communication
  • V2P (vehicle to pedestrian) communication in vehicle to everything (V2X) communication Waiting for the scene.
  • the above-mentioned wireless communication system may further include a network management device 13.
  • the network management device 13 may be a core network device in a wireless communication system.
  • the network management device 13 may be a mobility management entity (Mobility Management Entity) in an evolved packet core network (Evolved Packet Core, EPC). MME).
  • the network management device may also be other core network devices, such as Serving GateWay (SGW), Public Data Network GateWay (PGW), Policy and Charging Rules function unit (Policy and Charging Rules). Function, PCRF) or home subscriber network side device (Home Subscriber Server, HSS), etc.
  • SGW Serving GateWay
  • PGW Public Data Network GateWay
  • Policy and Charging Rules function unit Policy and Charging Rules
  • Function PCRF
  • HSS home subscriber network side device
  • the implementation form of the network management device 13 is not limited in the embodiment of the present disclosure.
  • an embodiment of the present disclosure provides a HARQ feedback scenario.
  • the count-downlink assignment index (C-DAI, Counter-Downlink assignment index) sent by the base station is used to indicate the current HARQ feedback window (here, the HARQ feedback window corresponds to the same feedback resource.
  • the terminal can receive the number of downlink transport blocks.
  • the total-downlink assignment index (T-DAI, Total-Downlink assignment index) is used to indicate the number of downlink transport blocks that can be received by the terminal on all subcarriers until the current subframe within the current HARQ feedback window.
  • C-DAI can be understood as used to indicate how many downlink data can be received by the terminal until the current subframe and the current subcarrier within the current HARQ feedback window.
  • the DAI bit should be extended and the continuous count of DAI between different HARQ feedback windows should be allowed.
  • the base station uses a continuous DAI mechanism and triggers the terminal to compare the data reception of codebook 2 with the codebook 3 feedback together.
  • N is the abbreviation of the negative indicator NACK, which is used to characterize the denial of receiving the corresponding The status of the transmission block;
  • A is the abbreviation of the confirmation indicator ACK, which is used to characterize the status of the confirmation that the corresponding transmission block is received
  • the corresponding HARQ feedback content is NNNAA.
  • the problem of ambiguity in the HARQ feedback codebook between the base station gNB and the terminal UE may arise.
  • the base station uses a continuous DAI mechanism and triggers the user to compare the data reception status of codebook 2 with the codebook 3 feedback together.
  • the HARQ feedback content expected by the base station should be AANAA, which causes the problem of unclear HARQ feedback codebook between the base station and the terminal.
  • another embodiment of the present disclosure provides a HARQ feedback scenario.
  • CI codebook index
  • Codebook index codebook index
  • Reported Codebook set indiction codebook set indication
  • CI is used to indicate a group of transmission blocks corresponding to the same feedback resource, which occupies 2 bits
  • Reported Codebook set indiction is used to indicate the number of transmission block sets that need to be fed back, occupies 2 bits, and when its value is 1, it means that only the current codebook is fed back
  • the base station sets the Reported Codebook set indication of codebook 3 to 2 to trigger the terminal to set the codebook 2’s
  • the data reception situation is fed back together with codebook 3.
  • the HARQ feedback corresponding to codebook 2 and 3 is transmitted together in the feedback resource indicated by codebook 3, and the content of the HARQ feedback is AANAA.
  • the base station sends a downlink transport block in the scenario of Figure 5a, but because the terminal cannot correctly determine the number of transport blocks corresponding to each HARQ codebook and the feedback content, the possible feedback content is ANANAA ( Figure 5b) or ANNAAA ( Figure 5c), and the actual content that should be fed back is AANNAA, so that the terminal incorrectly feeds back HARQ, which in turn leads to the problem of unclear HARQ feedback codebook between the base station and the terminal.
  • another embodiment of the present disclosure provides a HARQ feedback scenario.
  • HARQ feedback scenario two indications of downlink transport block set identification information (S_ID, SetIdentification) and set level bitmap are added to the NR-U DCI.
  • S_ID is used to indicate a group of downlink transport blocks corresponding to the same feedback resource, occupying 2 bits; set level bitmap is used to indicate which S_ID HARQ feedback needs to be fed back, which corresponds to the S_ID number one-to-one. When its bit is 1, it means feedback
  • the HARQ content corresponding to the S_ID occupies 4 bits.
  • the base station sets the set level bitmap of codebook 3 to 0110, which triggers the terminal to set codebook 2 (0010) The data reception status of is fed back together with codebook 3 (0100).
  • the number of HARQ bits that should be fed back and the corresponding feedback content For example, the base station sends a downlink transport block in the scenario of Figure 7a. Since the terminal cannot correctly determine the number and content of each HARQ codebook, the possible feedback content is ANNAA (corresponding to Figure 7b) or ANNAAA (corresponding to Figure 7c). ). However, the actual content that should be fed back is AANNAA, so that the terminal incorrectly feeds back the HARQ, which in turn leads to the problem of uncertainty in the HARQ feedback codebook between the base station and the terminal.
  • an embodiment of the present disclosure provides a HARQ feedback enhancement method, including:
  • Step S110 Send downlink control information including first indication information to the terminal; where the first indication information is used to indicate that in the current hybrid automatic repeat request HARQ feedback window, in the subframe after the current subframe and after the current subcarrier The number of downlink transport blocks received by the terminal on the subcarriers.
  • the first indication information can be understood as indicating how many downlink data needs to be received on subsequent subframes and all subsequent subcarriers up to the current subframe and the current subcarrier within the current HARQ feedback window.
  • the data receiving end determines whether the data is received correctly. When data is received correctly, ACK is fed back; when data is not received correctly, NACK is fed back.
  • ACK/NACK is transmitted on a physical uplink control channel (PUCCH, Physical Uplink Control Channel) or a physical uplink shared channel (PUSCH, Physical Uplink Shared Channel).
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • the downlink shared physical channel that transmits multiple downlink subframes may feed back ACK or NACK through the same uplink subframe.
  • All the downlink subframes corresponding to the same uplink subframe form a set K, and all the downlink subframes in the set K are collectively referred to as a HARQ feedback window.
  • the terminal can determine whether each downlink transmission block sent by the base station is lost according to the number of downlink transmission blocks that it still needs to receive and the information about the downlink transmission blocks it has actually received. For example, the base station has sent 6 transmission blocks. These are transmission block 1, transmission block 2, transmission block 3, transmission block 4, transmission block 5, and transmission block 6.
  • the corresponding field values included in the first indication information are 5, 4, 3, 2, 1, and 0 respectively. If transmission block 2 and transmission block 5 are lost during the transmission, the terminal will actually receive transmission block 1 in sequence according to its actual
  • the information of transmission block 3, transmission block 4, and transmission block 6 can be combined with the field values corresponding to the first indication information corresponding to transmission block 1, transmission block 3, transmission block 4, and transmission block 6 to determine transmission block 2 and transmission block. 5 is lost. And the result of receiving and losing the downlink transmission block is fed back to the base station through HARQ feedback, so that the base station can determine whether to resend the downlink transmission block to the terminal or to send a new downlink transmission block to the terminal.
  • the base station sends 3 downlink transmission blocks to the terminal within the first HARQ feedback window, which are transmission block 1, transmission block 2, and transmission block 3.
  • the first indication information corresponding to the transmission block 2 indicates that another transmission block needs to be received.
  • transmission block 3 is lost during transmission.
  • the terminal confirms that only two transmission blocks are received within the first HARQ feedback window, that is, when only transmission block 1 and transmission block 2 are received, it can be known according to the first indication information Transmission block 3 is lost.
  • the result of receiving and losing the downlink transport block in the first HARQ feedback window is fed back to the base station in the HARQ feedback mode, so that the base station can determine to resend the downlink transport block 3 to the terminal.
  • the downlink transmission block may refer to downlink data sent through a certain downlink shared physical channel.
  • the subframe after the current subframe and the subcarrier after the current subcarrier may refer to the subframe after the current subframe and the subcarrier with a higher frequency after the current subcarrier.
  • transmission block 3 takes transmission block 3, transmission block 4, and transmission block 5 corresponding to codebook 2 in Figure 3 as an example.
  • Block 3 is a transmission block that the terminal needs to receive on the sub-frame after the current sub-frame and the higher frequency sub-carrier after the current sub-carrier.
  • the carrier frequency corresponding to transmission block 4 and transmission block 5 is greater than the carrier frequency corresponding to transmission block 3.
  • the terminal can determine the downlink transmission block received by the terminal on the subframe after the current subframe and the subcarrier after the current subcarrier in the current hybrid automatic repeat request HARQ feedback window according to the first indication information quantity. Since the terminal obtains the number of downlink transport blocks that need to be received, the terminal determines whether each downlink transport block sent by the base station is lost according to the number of downlink transport blocks that still need to be received and the information of the received downlink transport blocks, which reduces The terminal does not know the number of downlink transport blocks sent by the base station, which causes the problem of unclear feedback content when performing HARQ feedback.
  • the downlink control information further includes second indication information; where the second indication information is used to instruct the terminal to send HARQ feedback of the first transport block and/or HARQ feedback of the second transport block;
  • the first transmission block is a transmission block decoded by the first codebook currently used;
  • the second transmission block is a transmission block decoded by the second codebook used before the first codebook.
  • the codebook corresponds to the HARQ feedback window.
  • the second transmission block includes transmission block 1, transmission block 2, and transmission block 3.
  • the second HARQ feedback window corresponds to the second codebook, transmission block 1, transmission block 2, and transmission block 3 are decoded through the second codebook respectively.
  • the first transmission block includes transmission block 3, transmission block 4, and transmission block 5.
  • the first HARQ feedback window corresponds to the first codebook, and transmission block 3, transmission block 4, and transmission block 5 are respectively Decode through the first codebook.
  • the HARQ feedback corresponding to transport block 1, transport block 2, and transport block 3 included in the second transport block is AAN, where AAN is used to characterize the HARQ feedback content corresponding to transport block 1, transport block 2, and transport block 3, respectively, ACK , ACK and NACK, that is, transmission block 1 and transmission block 2 are successfully received, and transmission block 3 is lost.
  • the HARQ feedback corresponding to transport block 3, transport block 4, and transport block 5 included in the first transport block is AAA, where AAA is used to characterize the HARQ feedback content corresponding to transport block 1, transport block 2, and transport block 3, respectively, ACK , ACK and ACK, that is, transmission block 1, transmission block 2 and transmission block 3 are received successfully.
  • the second indication information instructs the terminal to send the HARQ feedback of the first transport block and the HARQ feedback of the second transport block
  • the corresponding HARQ feedback content is AANAAA.
  • the second transmission block may be multiple.
  • the second transmission block may be the N-1th, N-2th, and N-3th transmission blocks.
  • the second transmission block may also be a plurality of transmission blocks among the N-1th, N-2th, N-3th, etc., for example, the N-1th and N-2th.
  • the HARQ feedback of multiple transport blocks together can save transmission resources.
  • the second indication information when the second indication information has the first indication value, it is used to instruct the terminal to send the HARQ feedback of the first transport block; when the second indication information has the second indication value, it is used to instruct the terminal to send the first transmission block.
  • the first indication value may be the value corresponding to a certain field in the second indication information.
  • the second indication information includes the field XXX01XX
  • 01 in the field is the first indication value, which is used to determine the sending of the first transmission block.
  • HARQ feedback is used to determine the sending of the first transmission block.
  • the second indication information includes the field XXX10XX
  • 10 in the field is the first indication value, which is used to determine the HARQ feedback of the first transport block and the HARQ feedback of the second transport block.
  • sending the HARQ feedback of the first transport block may refer to only performing HARQ feedback on the reception situation of the transport block in the current HARQ feedback window.
  • Sending the HARQ feedback of the first transport block and the HARQ feedback of the second transport block may refer to performing HARQ feedback together with the reception results of transport blocks in other HARQ feedback windows and the reception results of transport blocks in the current HARQ feedback window.
  • the second indication information when the HARQ feedback of the second transport block received in advance is successfully received, the second indication information has a first indication value, and the first indication value is used to instruct the terminal to send the HARQ feedback of the first transport block;
  • the second indication information when the received HARQ feedback of the second transport block fails to be received, the second indication information has a second indication value, and the second indication value is used to instruct the terminal to send the HARQ feedback of the first transport block and the second transport block.
  • the HARQ feedback of the second transport block received in advance may be the HARQ feedback of the second transport block received in one HARQ feedback window or multiple HARQ feedback windows before the current HARQ feedback window, for example, the N-1th HARQ feedback HARQ feedback of the second transport block received within the window or the N-1th, N-2, and N-3th HARQ feedback windows.
  • the successful reception of the HARQ feedback of the second transmission block may mean that the HARQ feedback is received within the first time period after the base station sends the second transmission block.
  • the HARQ feedback reception failure of the second transmission block may mean that the HARQ feedback is not received within the first time period after the base station sends the second transmission block.
  • the first indication value of the second indication information may be set to 01, and the first indication value is used to instruct the terminal to send the HARQ feedback of the first transport block;
  • the first indicator value of the second indicator information can be set to 10. The second indicator value is used to instruct the terminal to send the HARQ feedback of the first transport block and the second transport block .
  • the numerical information determined by the number of bits occupied by the second indication information is used to instruct the terminal to determine the second HARQ feedback when sending the HARQ feedback of the first transport block and the HARQ feedback of the second transport block.
  • the values that can be represented by the 2 bit numbers can be 01, 10, and 11 respectively. Then, when the value can be set to 01, the second transmission of HARQ feedback is determined The number of blocks corresponds to 0, that is, only the HARQ feedback of the current first transport block is sent during HARQ feedback; when the value is set to 10, it is determined that the number of second transport blocks for HARQ feedback corresponds to 1, that is, the first transport block will be sent during HARQ feedback.
  • the second indication information can occupy any set number of bits, and is used to characterize the HARQ feedback of the first transmission block and multiple consecutive transmission blocks before the first transmission block when the HARQ feedback is sent, for example, 3 Bit, 4 bit, etc.
  • the downlink control information includes third indication information
  • the method further includes: setting the third indication information as a counting mode between HARQ feedback windows, where the HARQ feedback reception of the second transport block received in advance fails.
  • the counting mode between the HARQ feedback windows is the continuous counting mode
  • the third indication information is used to indicate the current subframe and the subframe before the current subframe and the current subcarrier and the subcarrier before the current subcarrier in the HARQ feedback window Up, the number of downlink transport blocks received by the terminal.
  • the third indication information may be understood as used to indicate how many downlink data can be received for the terminal until the current subframe and the current subcarrier within the current HARQ feedback window.
  • the terminal can determine, based on the third indication information, that in the HARQ feedback window, in the current subframe and the subframe before the current subframe, and on the current subcarrier and the subcarrier before the current subcarrier, the downlink transport block can be received. Quantity to further determine the reception of the transport block. For example, in the current HARQ window, the third indication information corresponding to the fourth transmission block 4 contains a field set value of 4. After receiving the third indication information, the terminal can know that in the current HARQ window, in the fourth transmission A total of 3 transport blocks were sent before the block.
  • the counting mode between the HARQ feedback windows is the continuous counting mode, which can facilitate the terminal to determine the second transmission when the first transmission block and the second transmission block are fed back together.
  • the transfer of the block For example, the first transmission block corresponds to the current HARQ feedback window, and the second transmission block corresponds to the HARQ feedback window before the current HARQ feedback window.
  • continuous operation is performed between the two HARQ feedback windows. By counting, the number of downlink transport blocks that should be fed back currently can be determined.
  • another embodiment of the present disclosure provides a HARQ feedback enhancement method.
  • the method includes:
  • Step S210 Receive downlink control information including the first indication information
  • Step S220 According to the first indication information, determine the number of downlink transport blocks received in the subframe after the current subframe and on the subcarriers after the current subcarrier within the current hybrid automatic repeat request HARQ feedback window.
  • the data receiving end determines whether the data is received correctly. When data is received correctly, ACK is fed back; when data is not received correctly, NACK is fed back.
  • ACK/NACK is transmitted on a physical uplink control channel (PUCCH, Physical Uplink Control Channel) or a physical uplink shared channel (PUSCH, Physical Uplink Shared Channel).
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • All the downlink subframes corresponding to the same uplink subframe form a set K, and all the downlink subframes in the set K are collectively referred to as a HARQ feedback window.
  • the terminal can determine whether each downlink transmission block sent by the base station is lost according to the number of downlink transmission blocks that it still needs to receive and the information about the downlink transmission blocks it has actually received. For example, the base station sends 6 transmission blocks, which are Transmission block 1, transmission block 2, transmission block 3, transmission block 4, transmission block 5, and transmission block 6.
  • the corresponding field values included in the first indication information are 5, 4, 3, 2, 1, and 0 respectively.
  • transmission block 2 and transmission block 5 are lost during transmission, the terminal will actually receive transmission block 1 in sequence according to its actual The information of transmission block 3, transmission block 4, and transmission block 6 is combined with the field values corresponding to the first indication information corresponding to transmission block 1, transmission block 3, transmission block 4, and transmission block 6 to determine that transmission block 2 and transmission block 5 are lost . And the result of receiving and losing the downlink transmission block is fed back to the base station through HARQ feedback, so that the base station can determine whether to resend the downlink transmission block to the terminal or to send a new downlink transmission block to the terminal.
  • the base station sends 3 downlink transmission blocks to the terminal within the first HARQ feedback window, which are transmission block 1, transmission block 2, and transmission block 3.
  • the first indication information corresponding to the transmission block 2 indicates that another transmission block needs to be received.
  • transmission block 3 is lost during transmission.
  • the terminal confirms that only two transmission blocks are received within the first HARQ feedback window, that is, when only transmission block 1 and transmission block 2 are received, it can be known according to the first indication information Transmission block 3 is lost.
  • the result of receiving and losing the downlink transport block in the first HARQ feedback window is fed back to the base station in the HARQ feedback mode, so that the base station can determine to resend the downlink transport block 3 to the terminal.
  • the downlink transmission block may refer to downlink data sent through a certain downlink shared physical channel.
  • the subframe after the current subframe and the subcarrier after the current subcarrier may refer to the subframe after the current subframe and the subcarrier with a higher frequency after the current subcarrier.
  • transmission block 3 takes transmission block 3, transmission block 4, and transmission block 5 corresponding to codebook 2 in Figure 3 as an example.
  • Block 3 is a transmission block that the terminal needs to receive on the sub-frame after the current sub-frame and the higher frequency sub-carrier after the current sub-carrier.
  • the carrier frequency corresponding to transmission block 4 and transmission block 5 is greater than the carrier frequency corresponding to transmission block 3.
  • the terminal can determine the downlink transmission block received by the terminal on the subframe after the current subframe and the subcarrier after the current subcarrier in the current hybrid automatic repeat request HARQ feedback window according to the first indication information quantity. Since the terminal obtains the number of downlink transport blocks that need to be received, the terminal determines whether each downlink transport block sent by the base station is lost according to the number of downlink transport blocks that still need to be received and the information of the received downlink transport blocks, which reduces The terminal does not know the number of downlink transport blocks sent by the base station, which causes the problem of unclear feedback content when performing HARQ feedback.
  • the downlink control information further includes second indication information; in step S210, according to the second indication information, the HARQ feedback of the first transmission block and/or the HARQ feedback of the second transmission block are sent; wherein, the first transmission The block is the currently used transport block decoded by the first codebook; the second transport block is the transport block decoded by the second codebook previously used by the first codebook.
  • the codebook corresponds to the HARQ feedback window.
  • the second transmission block includes transmission block 1, transmission block 2, and transmission block 3.
  • the second HARQ feedback window corresponds to the second codebook, transmission block 1, transmission block 2, and transmission block 3 are decoded through the second codebook respectively.
  • the first transmission block includes transmission block 3, transmission block 4, and transmission block 5.
  • the first HARQ feedback window corresponds to the first codebook, and transmission block 3, transmission block 4, and transmission block 5 are respectively Decode through the first codebook.
  • the HARQ feedback corresponding to transport block 1, transport block 2, and transport block 3 included in the second transport block is AAN, where AAN is used to characterize the HARQ feedback content corresponding to transport block 1, transport block 2, and transport block 3, respectively, ACK , ACK and NACK, that is, transmission block 1 and transmission block 2 are successfully sent, and transmission block 3 is lost.
  • the HARQ feedback corresponding to transport block 3, transport block 4, and transport block 5 included in the first transport block is AAA, where AAA is used to characterize the HARQ feedback content corresponding to transport block 1, transport block 2, and transport block 3, respectively, ACK , ACK and ACK, that is, transmission block 1, transmission block 2 and transmission block 3 are all sent successfully.
  • the second indication information instructs the terminal to send the HARQ feedback of the first transport block and the HARQ feedback of the second transport block
  • the corresponding HARQ feedback content is AANAAA.
  • the second indication information instructs the terminal to send the HARQ feedback of the first transport block
  • the corresponding HARQ feedback content is AAA.
  • the first transmission block is the Nth transmission block
  • the second transmission block may be the N-1th, N-2th, and N-3th transmission blocks.
  • the second transmission block may also be a plurality of transmission blocks among the N-1th, N-2th, N-3th, etc., for example, the N-1th and N-2th.
  • the HARQ feedback of multiple transport blocks together can save transmission resources.
  • the terminal when the second indication information has the first indication value, the terminal sends the HARQ feedback of the first transmission block; when the second indication information has the second indication value, the terminal sends the HARQ feedback of the first transmission block and the second transmission block HARQ feedback.
  • the first indication value may be the value corresponding to a certain field in the second indication information.
  • the second indication information includes the field XXX01XX
  • 01 in the field is the first indication value, which is used to determine the sending of the first transmission block.
  • HARQ feedback is used.
  • the second indication information includes the field XXX10XX
  • 10 in the field is the first indication value, which is used to determine the HARQ feedback of the first transport block and the HARQ feedback of the second transport block.
  • sending the HARQ feedback of the first transport block may refer to only performing HARQ feedback on the reception situation of the transport block in the current HARQ feedback window.
  • Sending the HARQ feedback of the first transport block and the HARQ feedback of the second transport block may refer to performing HARQ feedback together with the reception result of the transport block in other HARQ feedback windows and the reception result of the transport block in the current HARQ feedback window.
  • the second transport block for HARQ feedback is determined Quantity.
  • the values that can be represented by the 2 bit numbers can be 01, 10, and 11 respectively. Then, when the value can be set to 01, the second transmission of HARQ feedback is determined The number of blocks corresponds to 0, that is, only the HARQ feedback of the current first transport block is sent during HARQ feedback; when the value is set to 10, it is determined that the number of second transport blocks for HARQ feedback corresponds to 1, that is, the first transport block will be sent during HARQ feedback.
  • the second indication information can occupy any set number of bits, and is used to characterize the HARQ feedback of the first transmission block and multiple consecutive transmission blocks before the first transmission block during HARQ feedback, for example, 2 digits, 3 digits, etc.
  • the downlink control information further includes third indication information
  • the method further includes: when the second indication information indicates to send HARQ feedback for the first transport block and HARQ feedback for the second transport block, It is determined that the third indication information is the continuous counting mode between HARQ feedback windows; wherein, the third indication information is used to indicate that in the current subframe and the subframe before the current subframe and the current The number of downlink transport blocks received by the terminal on the subcarrier and the subcarrier before the current subcarrier; the HARQ feedback content is determined according to the first indication information and the third indication information.
  • the terminal can determine, based on the third indication information, that in the HARQ feedback window, in the current subframe and the subframe before the current subframe, and on the current subcarrier and the subcarrier before the current subcarrier, the downlink transport block can be received. Quantity to further determine the reception of the transport block. For example, in the current HARQ window, the third indication information corresponding to the fourth transmission block 4 contains a field set value of 4. After receiving the third indication information, the terminal can know that in the current HARQ window, in the fourth transmission A total of 3 transport blocks were sent before the block.
  • the counting mode between the HARQ feedback windows is the continuous counting mode, which can facilitate the terminal in the first transmission block and the second transmission block.
  • the transmission condition of the second transmission block is determined.
  • the first transmission block corresponds to the current HARQ feedback window
  • the second transmission block corresponds to the HARQ feedback window before the current HARQ feedback window.
  • the second indication information indicates to send the first HARQ feedback window.
  • the feedback content of the HARQ feedback is determined according to the first indication information and the third indication information.
  • the field value included in the third indication information is 6, that is, the base station has sent 6 transmission blocks, which are transmission block 1, transmission block 2, transmission block 3, transmission block 4, transmission block 5, and transmission block 6.
  • the corresponding field values included in the first indication information are 5, 4, 3, 2, 1, 0, respectively, and transmission block 2 and transmission block 5 are lost during transmission.
  • the corresponding field value and the field value corresponding to the third indication information determine that transmission block 2 and transmission block 5 are lost. And the result of receiving and losing the downlink transport block is fed back to the base station through HARQ feedback mode,
  • the present disclosure also provides a specific embodiment to further understand the HARQ feedback enhancement method provided by the embodiments of the present disclosure.
  • the base station indicates the triggering of the second indication information of codebook 3 to TI (TI , Trigger Indication) is set to 2, triggers the terminal to feed back the data reception of codebook 2 together with codebook 3.
  • TI Trigger Indication
  • the HARQ feedback of codebooks 2 and 3 is transmitted together in the feedback resource indicated by codebook 3.
  • the terminal can determine that the HARQ feedback content corresponding to codebooks 2 and 3 is AANAA.
  • AC-DAI can be understood as used to indicate in the current HARQ feedback window, until the current subframe and the current subcarrier, how many downlink data needs to be received in its subsequent subframes and all subsequent subcarriers. The situation determines the A or N corresponding to the subsequent downlink data.
  • the terminal receives codebook 1 In the case of downlink transmission block 1, according to the AC-DAI indication, it is judged that the current codebook has 2 downlink transmission blocks to be received.
  • the terminal judges that the HARQ content of codebook 1 that needs to be fed back is ANN; when the base station starts sending In the downlink transmission block 4 of codebook 2, since the feedback failure of codebook 1 has not been detected, HARQ feedback is not triggered at this time; the user knows that there are two subsequent downlink transmissions according to the AC-DAI indication in the downlink transmission block 4. The block needs to be received.
  • the base station When the base station detects that the HARQ feedback of codebook 1 fails, it sets the trigger indication TI in downlink transport block 5 and downlink transport block 6 to 2 to trigger the user to feed back codebook 1 and 2 together, and the terminal according to the code For the reception of the downlink transport block in this section 2, it is determined that the HARQ content corresponding to codebook 2 is AAA, and the HARQ feedback content ANNAAA of codebooks 1 and 2 is fed back to the base station on UL2.
  • the terminal feeds ANANAA and AANNAA to the base station on UL2, and the terminal will not erroneously feedback HARQ, thereby reducing the problem of unclear HARQ feedback codebook between the base station and the user.
  • An embodiment of the present disclosure provides a HARQ feedback enhancement device, wherein the device includes a sending module configured to send downlink control information including first indication information to a terminal; wherein the first indication information is used to indicate the current hybrid The number of downlink transport blocks received by the terminal in the subframe after the current subframe and on the subcarriers after the current subcarrier within the automatic repeat request HARQ feedback window.
  • the sending module is further configured such that the downlink control information further includes second indication information; where the second indication information is used to instruct the terminal to send HARQ feedback of the first transport block and/or HARQ feedback of the second transport block ;
  • the first transmission block is the currently used transmission block decoded by the first codebook;
  • the second transmission block is the transmission block decoded by the second codebook used before the first codebook.
  • the sending module is further configured to, when the HARQ feedback of the second transmission block received in advance is successfully received, the second indication information has a first indication value, and the first indication value is used to instruct the terminal to send the first transmission block HARQ feedback; when the HARQ feedback of the second transport block received in advance fails to be received, the second indication information has a second indication value, and the second indication value is used to instruct the terminal to send HARQ feedback for the first transport block and the second transport block.
  • the sending module is further configured to use numerical information determined by the number of bits occupied by the second indication information, which is used to instruct the terminal to determine to proceed when sending HARQ feedback for the first transport block and HARQ feedback for the second transport block. The number of second transport blocks fed back by HARQ.
  • the downlink control information includes third indication information
  • the sending module is further configured to
  • the counting mode between HARQ feedback windows is the continuous counting mode
  • the third indication information is used for Indicates the number of downlink transport blocks received by the terminal in the current subframe and the subframe before the current subframe and the current subcarrier and the subcarrier before the current subcarrier within the HARQ feedback window.
  • Another embodiment of the present disclosure provides a HARQ feedback enhancement device, wherein the device includes a receiving module configured to receive downlink control information including first indication information; according to the first indication information, it is determined that the current hybrid automatic retransmission Request the number of downlink transport blocks received in the subframe after the current subframe and the subcarrier after the current subcarrier within the HARQ feedback window.
  • the device includes a receiving module configured to receive downlink control information including first indication information; according to the first indication information, it is determined that the current hybrid automatic retransmission Request the number of downlink transport blocks received in the subframe after the current subframe and the subcarrier after the current subcarrier within the HARQ feedback window.
  • the downlink control information further includes second indication information
  • the receiving module is further configured to send HARQ feedback of the first transmission block and/or HARQ feedback of the second transmission block according to the second indication information
  • the transport block is the transport block decoded by the first codebook currently used
  • the second transport block is the transport block decoded by the second codebook used before the first codebook.
  • the receiving module is further configured to determine the value information determined by the number of bits occupied by the second indication information, when sending the HARQ feedback of the first transmission block and the HARQ feedback of the second transmission block, determine the HARQ feedback The number of second transmission blocks.
  • the downlink control information further includes third indication information
  • the receiving module is further configured to determine that when the second indication information indicates to send HARQ feedback for the first transport block and HARQ feedback for the second transport block
  • the third indication information is a continuous counting mode between HARQ feedback windows; wherein the third indication information is used to indicate that in the continuous HARQ feedback window, the current subframe and the subframe before the current subframe and the current subcarrier and On the subcarrier before the current subcarrier, the terminal receives the number of downlink transport blocks; the receiving module is further configured to determine the HARQ feedback feedback content according to the first indication information and the third indication information.
  • the embodiment of the present disclosure also provides a communication device, including:
  • the processor is respectively connected to the antenna and the memory, and is used to control the antenna to send and receive wireless signals by executing executable programs stored on the memory, and can execute the steps of the method for determining the contention window provided by any of the foregoing embodiments.
  • the communication device provided in this embodiment may be the aforementioned terminal or base station.
  • the terminal can be various human-borne terminals or vehicle-mounted terminals.
  • the base station may be various types of base stations, for example, a 4G base station or a 5G base station.
  • the antenna may be various types of antennas, for example, a mobile antenna such as a 3G antenna, a 4G antenna, or a 5G antenna; the antenna may also include a WiFi antenna or a wireless charging antenna.
  • a mobile antenna such as a 3G antenna, a 4G antenna, or a 5G antenna
  • the antenna may also include a WiFi antenna or a wireless charging antenna.
  • the memory may include various types of storage media, and the storage media is a non-transitory computer storage medium that can continue to store the information stored thereon after the communication device is powered off.
  • the processor may be connected to the antenna and the memory via a bus or the like, for reading executable programs stored on the memory, for example, at least one of the methods shown in FIG. 8 and FIG. 9.
  • the embodiments of the present disclosure also provide a non-transitory computer-readable storage medium, and the non-transitory computer-readable storage medium stores an executable program, where the executable program is executed by a processor to realize the competition window provided by any of the foregoing embodiments
  • an embodiment of the present disclosure provides a structure of a terminal.
  • the terminal 800 shown in FIG. 12 provides a terminal 800.
  • the terminal may specifically be a mobile phone, a computer, a digital broadcasting terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc. .
  • the terminal 800 may include one or more of the following components: a processing component 802, a memory 804, a power supply component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, And the communication component 816.
  • the processing component 802 generally controls the overall operations of the terminal 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above methods.
  • the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components.
  • the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.
  • the memory 804 is configured to store various types of data to support the operation of the device 800. Examples of these data include instructions for any application or method operated on the terminal 800, contact data, phone book data, messages, pictures, videos, etc.
  • the memory 804 can be implemented by any type of volatile or nonvolatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable 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 Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic Disk Magnetic Disk or Optical Disk.
  • the power supply component 806 provides power for various components of the terminal 800.
  • the power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the terminal 800.
  • the multimedia component 808 includes a screen that provides an output interface between the terminal 800 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, sliding, and gestures on the touch panel. The touch sensor can not only sense the boundary of the touch or slide action, but also detect the duration and pressure related to the touch or slide operation.
  • the multimedia component 808 includes a front camera and/or a rear camera. When the device 800 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can 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 810 is configured to output and/or input audio signals.
  • the audio component 810 includes a microphone (MIC), and when the terminal 800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive external audio signals.
  • the received audio signal may be further stored in the memory 804 or transmitted via the communication component 816.
  • the audio component 810 further includes a speaker for outputting audio signals.
  • the I/O interface 812 provides an interface between the processing component 802 and a peripheral interface module.
  • the peripheral interface module may be a keyboard, a click wheel, a button, and the like. These buttons may include but are not limited to: home button, volume button, start button, and lock button.
  • the sensor component 814 includes one or more sensors for providing the terminal 800 with various status assessments.
  • the sensor component 814 can detect the on/off status of the device 800 and the relative positioning of components, such as the display and keypad of the terminal 800.
  • the sensor component 814 can also detect the position change of the terminal 800 or a component of the terminal 800. The presence or absence of contact with the terminal 800, the orientation or acceleration/deceleration of the terminal 800, and the temperature change of the terminal 800.
  • the sensor component 814 may include a proximity sensor configured to detect the presence of nearby objects when there is no physical contact.
  • the sensor component 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
  • the communication component 816 is configured to facilitate wired or wireless communication between the terminal 800 and other devices.
  • the terminal 800 can access a wireless network based on a communication standard, such as Wi-Fi, 2G or 3G, or a combination thereof.
  • the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication.
  • the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • the terminal 800 may be configured by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable A gate array (FPGA), controller, microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.
  • ASIC application specific integrated circuits
  • DSP digital signal processors
  • DSPD digital signal processing devices
  • PLD programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.
  • non-transitory computer-readable storage medium including instructions, such as the memory 804 including instructions, which can be executed by the processor 820 of the terminal 800 to complete the foregoing 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, etc.
  • the terminal can be used to implement the aforementioned capability parameter processing method, for example, the HARQ feedback enhancement method shown in FIG. 8 and FIG. 9.
  • an embodiment of the present disclosure provides a structure of a base station.
  • the base station 900 may be provided as a network side device.
  • the base station 900 includes a processing component 922, which further includes one or more processors, and a memory resource represented by a memory 932, for storing instructions that can be executed by the processing component 922, such as application programs.
  • the application program stored in the memory 932 may include one or more modules each corresponding to a set of instructions.
  • the processing component 922 is configured to execute instructions to execute the random access method provided in any of the foregoing embodiments of the foregoing method, for example, the HARQ feedback enhancement method as shown in FIG. 8 and FIG. 9.
  • the base station 900 may also include a power supply component 926 configured to perform power management of the base station 900, a wired or wireless network interface 950 configured to connect the base station 900 to the network, and an input output (I/O) interface 958.
  • the base station 900 can operate based on an operating system stored in the memory 932, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or the like.
  • the wireless network interface 950 includes but is not limited to the antenna of the aforementioned communication device.

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Abstract

本申请实施例提供了一种HARQ反馈增强的方法，其中，所述方法包括：向终端发送包含第一指示信息的下行控制信息；其中，所述第一指示信息用于指示在当前混合自动重传请求HARQ反馈窗口内，在当前子帧之后的子帧且当前子载波之后的子载波上，所述终端接收的下行传输块的数量。

Description

HARQ反馈增强的方法及装置、通信设备及存储介质 技术领域
本申请涉及无线通信技术领域但是不限于无线通信技术领域，尤其涉及一种混合自动重传请求(HARQ，Hybrid Automatic Repeat request)反馈增强的方法及装置、通信设备及存储介质。
背景技术
移动设备的增加和移动互联网的飞速发展，一方面，带来了移动数据的爆炸式增长，对流量密度、网络容量、用户速率、时延等性能都提出了更高的要求。为了应对挑战，第五代(5G，5th generation)移动通信新空口(NR，New Radio)面向新场景和新频段进行了全新的空口设计。另一方面，频谱资源短缺是移动通信网络面临的越来越严峻的现实。授权频段尤其是价值较高的低频段资源不仅带宽有限，而且正被日益增长的终端群迅速消耗。为了应对频谱短缺的挑战，增大系统容量，提出了对基于NR的非授权频段(NR-U，New Radio Based Unlicensed Access)的研究计划并已开启研究项目。
基于NR的非授权频段NR-U接入与辅助授权接入(LAA，License Assisted Access)分别对应为在非授权频段中使用NR空口和长期演进(LTE，Long Term Evolution)空口的两种网络技术。虽然非授权频段带宽资源丰富，但为了保障使用此频段的不同无线接入技术(RAT，Radio Access Technology)之间的公平共存，在LAA中引入了基于空闲信道检测(CCA，Clear Channel Assessment)的先听后说(LBT，Listen Before Talk)技术。将LBT技术同样引入基于NR的非授权频段是保障公平共存的重要方式。在NR系统中，物理下行控制信道/物理上行控制信道(PDCCH/PUCCH， Physical Downlink Control Channel/Physical Uplink Control Channel)漏检的概率非常低，并且对于连续丢失4个PDCCH的情况基本可以忽略。然而，在NR-U系统中，由于引入LBT机制，其带来的隐藏节点问题可能导致上行(UL，Up Link)LBT失败，使得PDCCH/PUCCH漏检的概率增大、连续丢失PDCCH数更多、下行HARQ反馈发送失败并最终导致用户HARQ反馈失败的情况。
针对上述情况，为了给HARQ提供多个传输机会，制定了支持基站为上一信道占用时间(COT，Channel Occupancy Time)周期内的物理下行共享信道(PDSCH，Physical Downlink Shared Channel)或上一HARQ反馈窗口触发HARQ反馈的协议。但是，该协议中采用的技术方案实现过程中都出现了基站(gNB，the next generation Node B)和用户终端(UE，Unit Equipment)之间的HARQ反馈的反馈内容存在不明确的问题。
发明内容
本申请实施例公开了一种HARQ反馈增强的方法及装置、通信设备及存储介质。
根据本公开实施例的第一方面，提供一种HARQ反馈增强的方法，其中，所述方法包括：
向终端发送包含第一指示信息的下行控制信息；其中，所述第一指示信息用于指示在当前混合自动重传请求HARQ反馈窗口内，在当前子帧之后的子帧且当前子载波之后的子载波上，所述终端接收的下行传输块的数量。
在一实施例中，所述方法还包括：
所述下行控制信息还包括第二指示信息；其中，所述第二指示信息，用于指示所述终端发送第一传输块的HARQ反馈和/或第二传输块的 HARQ反馈；其中，所述第一传输块是当前使用的第一码本解码的传输块；所述第二传输块是所述第一码本之前使用的第二码本解码的传输块。
在一实施例中，所述方法还包括：
当事先接收的所述第二传输块的HARQ反馈接收成功时，所述第二指示信息具有第一指示值，所述第一指示值用于指示所述终端发送所述第一传输块的HARQ反馈；
当事先接收的所述第二传输块的HARQ反馈接收失败时，所述第二指示信息具有第二指示值，所述第二指示值用于指示所述终端发送所述第一传输块和所述第二传输块的HARQ反馈。
在一实施例中，所述方法还包括：
所述第二指示信息占用的比特数所确定的数值信息，用于指示所述终端在发送所述第一传输块的HARQ反馈和所述第二传输块的HARQ反馈时，确定进行HARQ反馈的所述第二传输块的数量。
在一实施例中，所述方法还包括：
将所述第三指示信息设置为HARQ反馈窗口间的计数模式，其中，当事先接收的所述第二传输块的HARQ反馈接收失败时，所述HARQ反馈窗口间的计数模式为连续计数模式，所述第三指示信息用于指示在HARQ反馈窗口内，在当前子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的子载波上，所述终端接收到下行传输块的数量。
根据本公开实施例的第二方面，还提供一种HARQ反馈增强的方法，其中，所述方法包括：
接收包含第一指示信息的下行控制信息；
根据所述第一指示信息，确定在当前混合自动重传请求HARQ反馈窗口内，在当前子帧之后的子帧且当前子载波之后的子载波上，接收的下行传输块的数量。
在一实施例中，所述下行控制信息还包括第二指示信息；所述方法还包括：
根据所述第二指示信息，发送第一传输块的HARQ反馈和/或第二传输块的HARQ反馈；其中，所述第一传输块是当前使用的第一码本解码的传输块；所述第二传输块是所述第一码本之前使用的第二码本解码的传输块。
在一实施例中，所述方法还包括：
根据所述第二指示信息占用的比特数所确定的数值信息，在发送所述第一传输块的HARQ反馈和所述第二传输块的HARQ反馈时，确定进行HARQ反馈的所述第二传输块的数量。
在一实施例中，所述下行控制信息还包括第三指示信息，所述方法还包括：当所述第二指示信息指示发送第一传输块的HARQ反馈和第二传输块的HARQ反馈时，确定所述第三指示信息为HARQ反馈窗口间的连续计数模式；其中，所述第三指示信息用于指示在连续的HARQ反馈窗口内，在当前子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的子载波上，终端接收到下行传输块的数量；根据所述第一指示信息和所述第三指示信息确定HARQ反馈的反馈内容。
根据本公开实施例的第三方面，还提供一种HARQ反馈增强的装置，其中，所述装置包括发送模块，所述发送模块配置为向终端发送包含第一指示信息的下行控制信息；其中，所述第一指示信息用于指示在当前混合自动重传请求HARQ反馈窗口内，在当前子帧之后的子帧且当前子载波之后的子载波上，所述终端接收的下行传输块的数量。
在一实施例中，所述发送模块还配置为所述下行控制信息还包括第二指示信息；其中，所述第二指示信息，用于指示所述终端发送第一传输块的HARQ反馈和/或第二传输块的HARQ反馈；其中，所述第一传 输块是当前使用的第一码本解码的传输块；所述第二传输块是所述第一码本之前使用的第二码本解码的传输块。
在一实施例中，所述发送模块还配置为当事先接收的所述第二传输块的HARQ反馈接收成功时，所述第二指示信息具有第一指示值，所述第一指示值用于指示所述终端发送所述第一传输块的HARQ反馈；当事先接收的所述第二传输块的HARQ反馈接收失败时，所述第二指示信息具有第二指示值，所述第二指示值用于指示所述终端发送所述第一传输块和所述第二传输块的HARQ反馈。
在一实施例中，所述发送模块还配置为所述第二指示信息占用的比特数所确定的数值信息，用于指示所述终端在发送所述第一传输块的HARQ反馈和所述第二传输块的HARQ反馈时，确定进行HARQ反馈的所述第二传输块的数量。
在一实施例中，所述下行控制信息包括第三指示信息，所述发送模块还配置为将所述第三指示信息设置为HARQ反馈窗口间的计数模式，其中，当事先接收的所述第二传输块的HARQ反馈接收失败时，所述HARQ反馈窗口间的计数模式为连续计数模式，所述第三指示信息用于指示在HARQ反馈窗口内，在当前子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的子载波上，所述终端接收到下行传输块的数量。
根据本公开实施例的第四方面，还提供一种HARQ反馈增强的装置，其中，所述装置包括接收模块，所述接收模块配置为接收包含第一指示信息的下行控制信息；根据所述第一指示信息，确定在当前混合自动重传请求HARQ反馈窗口内，在当前子帧之后的子帧且当前子载波之后的子载波上，接收的下行传输块的数量。
在一实施例中，所述下行控制信息还包括第二指示信息，所述接收模块还配置为根据所述第二指示信息，发送第一传输块的HARQ反馈和/ 或第二传输块的HARQ反馈；其中，所述第一传输块是当前使用的第一码本解码的传输块；所述第二传输块是所述第一码本之前使用的第二码本解码的传输块。
在一实施例中，所述接收模块还配置为根据所述第二指示信息占用的比特数所确定的数值信息，在发送所述第一传输块的HARQ反馈和所述第二传输块的HARQ反馈时，确定进行HARQ反馈的所述第二传输块的数量。
在一实施例中，所述下行控制信息还包括第三指示信息，所述接收模块还配置为当所述第二指示信息指示发送第一传输块的HARQ反馈和第二传输块的HARQ反馈时，确定所述第三指示信息为HARQ反馈窗口间的连续计数模式；其中，所述第三指示信息用于指示在连续的HARQ反馈窗口内，在当前子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的子载波上，终端接收到下行传输块的数量；根据所述第一指示信息和所述第三指示信息确定HARQ反馈的反馈内容。
根据本公开实施例的第五方面，提供一种通信设备，包括：
天线；
存储器；
处理器，分别与所述天线及存储器连接，用于通过执行存储在所述存储器上的可执行程序，控制所述天线收发无线信号，并能够执行前述任意技术方案提供的HARQ反馈增强的方法的步骤。
根据本公开实施例的第六方面，提供一种非临时性计算机可读存储介质，所述非临时性计算机可读存储介质存储有可执行程序，其中，所述可执行程序被处理器执行时实现前述任意技术方案提供的HARQ反馈增强的方法的步骤。
本公开实施例中，提供的HARQ反馈增强的方法，其中，所述方法 包括：向终端发送包含第一指示信息的下行控制信息；其中，所述第一指示信息用于指示在当前混合自动重传请求HARQ反馈窗口内，在当前子帧之后的子帧且当前子载波之后的子载波上，所述终端接收的下行传输块的数量。这样，终端就能够根据所述第一指示信息确定在当前混合自动重传请求HARQ反馈窗口内，在当前子帧之后的子帧且当前子载波之后的子载波上，终端还需接收的下行传输块的数量。由于终端获得了还需接收的下行传输块的数量，则终端根据所述还需接收的下行传输块的数量和终端实际已经接收到的下行传输块的信息就能确定基站发送的每个所述下行传输块是否丢失，减少了终端由于不知道基站发送的所述下行传输块的所述数量而导致的在进行HARQ反馈时反馈内容不明确的问题。
附图说明
图1为本公开实施例提供的一种无线通信系统的结构示意图；
图2为本公开一实施例提供的一种HARQ反馈场景示意图；
图3为本公开另一实施例提供的一种HARQ反馈场景示意图；
图4为本公开另一实施例提供的一种HARQ反馈场景示意图；
图5a为本公开另一实施例提供的一种HARQ反馈场景示意图；
图5b为本公开另一实施例提供的一种HARQ反馈场景示意图；
图5c为本公开另一实施例提供的一种HARQ反馈场景示意图；
图6为本公开另一实施例提供的一种HARQ反馈场景示意图；
图7a为本公开另一实施例提供的一种HARQ反馈场景示意图；
图7b为本公开另一实施例提供的一种HARQ反馈场景示意图；
图7c为本公开另一实施例提供的一种HARQ反馈场景示意图；
图8为本公开一实施例提供一种HARQ反馈增强的方法的示意图；
图9为本公开另一实施例提供一种HARQ反馈增强的方法的示意图；
图10为本公开一实施例提供的一种HARQ反馈场景示意图；
图11a为本公开另一实施例提供的一种HARQ反馈场景示意图；
图11b为本公开另一实施例提供的一种HARQ反馈场景示意图；
图11c为本公开另一实施例提供的一种HARQ反馈场景示意图；
图12为本公开一实施例提供的一种终端的结构示意图；
图13为本公开一实施例提供的一种基站的结构示意图。
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申请实施例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、本申请实施例的一些方面相一致的装置和方法的例子。
在本公开实施例使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开实施例。在本公开实施例和所附权利要求书中所使用的单数形式的“一种”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本公开实施例可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本公开实施例范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”及“若”可以被解释成为“在……时”或“当……时”或“响应于确定”。
请参考图1，其示出了本公开实施例提供的一种无线通信系统的结构示 意图。如图1所示，无线通信系统是基于蜂窝移动通信技术的通信系统，该无线通信系统可以包括：若干个终端11以及若干个基站12。
其中，终端11可以是指向用户提供语音和/或数据连通性的设备。终端11可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，终端11可以是物联网终端，如传感器设备、移动电话(或称为“蜂窝”电话)和具有物联网终端的计算机，例如，可以是固定式、便携式、袖珍式、手持式、计算机内置的或者车载的装置。例如，站(Station，STA)、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点、远程终端(remote terminal)、接入终端(access terminal)、用户装置(user terminal)、用户代理(user agent)、用户设备(user device)、或用户终端(user equipment，UE)。或者，终端11也可以是无人飞行器的设备。或者，终端11也可以是车载设备，比如，可以是具有无线通信功能的行车电脑，或者是外接行车电脑的无线通信设备。或者，终端11也可以是路边设备，比如，可以是具有无线通信功能的路灯、信号灯或者其它路边设备等。
基站12可以是无线通信系统中的网络侧设备。其中，该无线通信系统可以是第四代移动通信技术(the 4th generation mobile communication，4G)系统，又称长期演进(Long Term Evolution，LTE)系统；或者，该无线通信系统也可以是5G系统，又称新空口(new radio，NR)系统或5G NR系统。或者，该无线通信系统也可以是5G系统的再下一代系统。其中，5G系统中的接入网可以称为NG-RAN(New Generation-Radio Access Network，新一代无线接入网)。或者，MTC系统。
其中，基站12可以是4G系统中采用的演进型基站(eNB)。或者，基站12也可以是5G系统中采用集中分布式架构的基站(gNB)。当基站12采用集中分布式架构时，通常包括集中单元(central unit，CU)和至少两 个分布单元(distributed unit，DU)。集中单元中设置有分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层、无线链路层控制协议(Radio Link Control，RLC)层、媒体访问控制(Media Access Control，MAC)层的协议栈；分布单元中设置有物理(Physical，PHY)层协议栈，本公开实施例对基站12的具体实现方式不加以限定。
基站12和终端11之间可以通过无线空口建立无线连接。在不同的实施方式中，该无线空口是基于第四代移动通信网络技术(4G)标准的无线空口；或者，该无线空口是基于第五代移动通信网络技术(5G)标准的无线空口，比如该无线空口是新空口；或者，该无线空口也可以是基于5G的更下一代移动通信网络技术标准的无线空口。
在一些实施例中，终端11之间还可以建立E2E(End to End，端到端)连接。比如车联网通信(vehicle to everything，V2X)中的V2V(vehicle to vehicle，车对车)通信、V2I(vehicle to Infrastructure，车对路边设备)通信和V2P(vehicle to pedestrian，车对人)通信等场景。
在一些实施例中，上述无线通信系统还可以包含网络管理设备13。
若干个基站12分别与网络管理设备13相连。其中，网络管理设备13可以是无线通信系统中的核心网设备，比如，该网络管理设备13可以是演进的数据分组核心网(Evolved Packet Core，EPC)中的移动性管理实体(Mobility Management Entity，MME)。或者，该网络管理设备也可以是其它的核心网设备，比如服务网关(Serving GateWay，SGW)、公用数据网网关(Public Data Network GateWay，PGW)、策略与计费规则功能单元(Policy and Charging Rules Function，PCRF)或者归属签约用户网络侧设备(Home Subscriber Server，HSS)等。对于网络管理设备13的实现形态，本公开实施例不做限定。
为了更好地理解本公开实施例所提供的一种HARQ反馈增强的方法。 首先，对相关技术方案做说明。
如图2所示，本公开一实施例提供一种HARQ反馈场景。在该HARQ反馈场景中，基站发送的计数-下行分配索引(C-DAI，Counter-Downlink assignment index)用于指示在当前HARQ反馈窗口内(这里，HARQ反馈窗口对应的是同一反馈资源，也可称为同一码本)，在当前子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的子载波上，终端能够接收到下行传输块的数量。总-下行分配索引(T-DAI，Total-Downlink assignment index)用于指示在当前HARQ反馈窗口内，到当前子帧为止在所有子载波上对于终端而言可以接收到的下行传输块的数量。这里，C-DAI可以理解为用于指示在当前HARQ反馈窗口内，到当前子帧且当前子载波为止，对于终端而言可以接收到多少个下行数据。
针对基站触发的HARQ反馈，为了指示未确认的下行传输块，提出了应该扩展DAI比特并允许DAI在不同HARQ反馈窗口间的连续计数。请参见图2，由于码本2对应的所有下行传输块均丢失导致HARQ反馈失败(对应图中的标号②)，基站采用连续的DAI机制并触发终端将码本2的数据接收情况与码本3一起反馈。终端在接收到基站下发的码本3时，根据C-DAI＝4指示知道在下行传输块6前还需反馈NNN(其中，N为否认指示符NACK的简写，用于表征否认接收到对应传输块的状态；A为确认指示符ACK的简写，用于表征确认接收到对应传输块的状态)，并将NNN与新接收数据的AA一起在码本3指示的反馈资源中进行反馈，其对应的HARQ反馈内容为NNNAA。
然而，由于引入基站触发的HARQ反馈机制，并允许为累积的下行传输块使用连续的DAI计数，可能会出现基站gNB和终端UE之间的HARQ反馈码本的不明确的问题。如图3所示，由于码本2的部分下行传输块丢失并且其HARQ反馈失败(对应图中的标号②)，基站采用连续的DAI机 制并触发用户将码本2的数据接收情况与码本3一起反馈。终端在接收到基站下发的码本3时，根据C-DAI＝4指示会误以为在码本2中丢失了最先发送的3个传输块而反馈NNNAA(对应图中的标号③)。而基站期望的HARQ反馈内容应该为AANAA，从而出现基站和终端间HARQ反馈码本不明确问题。
如图4所示，本公开另一实施例提供一种HARQ反馈场景。在该HARQ反馈场景中，在NR-U DCI中新增码本索引号(CI，Codebook index)和码本集指示(Reported Codebook set indiction)两个指示。CI用于指示对应同一反馈资源的一组传输块，占用2比特；Reported Codebook set indiction用于指示需要反馈的传输块集个数，占用2比特，当其值为1时表示只反馈当前码本内的HARQ，当其值大于1时表示将当前码本与前一个码本的HARQ一起反馈。
如图4所示，由于码本2的部分下行传输块丢失并且其HARQ反馈失败(对应图中的标号②)，基站将码本3的Reported Codebook set indication设置为2触发终端将码本2的数据接收情况与码本3一起反馈。终端在接收到基站下发的码本3时，根据C-DAI＝4和Reported Codebook set indication＝2指示知道码本2的HARQ反馈失败。并将码本2和3对应的HARQ反馈在码本3所指示的反馈资源中一起传输，HARQ反馈内容为AANAA。
虽然采用上述方案可以减少基站检测上行连接2(UL2)失败触发HARQ反馈重传场景中的HARQ码本不明确问题。但是，如果先前的HARQ码本重传是在当前的HARQ码本中间被触发，则会出现终端错误反馈HARQ的问题。如图5a、图5b、图5c所示，由于上行连接1(UL1)反馈失败，基站将码本2的Reported Codebook set indication设置为2，触发终端将码本1的数据接收情况与码本2一起反馈。但是本方案在这三种场景下 会触发相同的重传指示。当用户接收完基站下发的码本2时，仅根据C-DAI＝5和Reported Codebook set indication＝2指示无法正确判断每个码本中所应反馈的HARQ比特个数和对应的内容。例如，基站在图5a场景下发送下行传输块，但是由于终端无法正确判断每一HARQ码本对应的传输块的个数及反馈内容，使其可能反馈的内容为ANANAA(图5b)或ANNAAA(图5c)，而实际应该反馈的内容为AANNAA，从而出现终端错误反馈HARQ的情况，进而导致基站和终端间HARQ反馈码本不明确的问题。
如图6所示，本公开另一实施例提供一种HARQ反馈场景。在该HARQ反馈场景中，在NR-U DCI中新增下行传输块集识别信息(S_ID，Set Identification)和集等级位图set level bitmap两个指示。S_ID用于指示对应同一反馈资源的一组下行传输块，占用2比特；set level bitmap用于指示需要反馈哪个S_ID的HARQ反馈，与S_ID号一一对应，当其比特位为1时，表示反馈对应S_ID的HARQ内容，占用4比特。请参见图6，由于码本2的部分下行传输块丢失并且其HARQ反馈失败(对应图中的②)，基站将码本3的set level bitmap设置为0110，触发终端将码本2(0010)的数据接收情况与码本3(0100)一起反馈。终端在接收到基站下发的码本3时，根据C-DAI＝4和set level bitmap＝0110指示知道码本2的HARQ反馈失败，并将码本2和3对应的HARQ反馈在码本3所指示的反馈资源中一起传输，HARQ反馈内容为AANAA。
虽然采用上述技术方案可以减少基站检测UL2失败触发HARQ反馈重传场景中的HARQ码本不确定问题。但是，如果先前的HARQ码本重传是在当前的HARQ码本中间被触发，则会出现UE错误反馈HARQ的问题。如图7a、7b、7c所示，由于UL1反馈失败，基站将码本2的set level bitmap设置为0011，触发终端将码本1的数据接收情况与码本2一起反馈。但是在这三种场景下会触发相同的重传指示，当终端接收完基站下发的码本2 时，仅根据C-DAI＝5和set level bitmap＝0011指示无法正确判断每个码本中所应反馈的HARQ比特个数和对应的反馈内容。例如，基站在图7a场景下发送下行传输块，由于终端无法正确判断出每一HARQ码本对应的个数及内容，使其可能反馈的内容为ANANAA(对应图7b)或ANNAAA(对应图7c)。而实际应该反馈的内容为AANNAA，从而出现终端错误反馈HARQ的情况，进而导致基站和终端间HARQ反馈码本不确定的问题。
如图8所示，本公开一实施例提供一种HARQ反馈增强的方法，包括：
步骤S110：向终端发送包含第一指示信息的下行控制信息；其中，第一指示信息用于指示在当前混合自动重传请求HARQ反馈窗口内，在当前子帧之后的子帧且当前子载波之后的子载波上，终端接收的下行传输块的数量。
这里，第一指示信息可以理解为用于指示在当前HARQ反馈窗口内，到当前子帧且当前子载波为止其后续子帧及后续所有子载波上还有多少个下行数据需要接收。这里，在基于传输块的混合自动重传请求HARQ反馈进行数据传输时，数据接收端确定是否正确接收数据。当正确接收到数据时，反馈ACK；当没有正确接收到数据时，反馈NACK。这里，ACK/NACK是在物理上行控制信道(PUCCH，Physical Uplink Control Channel)或是物理上行共享信道(PUSCH,Physical Uplink Shared Channel)上传输的。这里，在时分双工系统中，发送多个下行子帧的下行共享物理信道可能通过同一上行子帧反馈ACK或NACK。同一个上行子帧对应的所有的下行子帧组成集合K，将集合K中所有的下行子帧统称为一个HARQ反馈窗口。这里，终端根据还需接收的下行传输块的数量并根据自身实际已经接收到的下行传输块的信息就可以确定基站发送的每个下行传输块是否丢失，例如，基站发送了6个传输块，分别为传输块1、传输块2、传输块3、传输块4、传输块5和传输块6。对应的第一指示信息包括的字段值分别为5、4、3、2、 1、0，传输过程中丢失了传输块2和传输块5，则终端根据自身实际依次接收到的传输块1、传输块3、传输块4、传输块6的信息，并结合传输块1、传输块3、传输块4、传输块6对应的第一指示信息对应的字段值就能确定传输块2和传输块5丢失。并将下行传输块的接收与丢失结果通过HARQ反馈方式反馈给基站，以便基站确定重新向终端发送下行传输块还是向终端发送新的下行传输块。
例如，基站在第一HARQ反馈窗口内向终端发送了3个下行传输块，分别为传输块1、传输块2和传输块3。在终端成功接收了传输块1和传输块2时，传输块2对应指示的第一指示信息指示还需要接收1个传输块。但传输块3在传输过程中丢失，当终端确认在第一HARQ反馈窗口内只接收到2个传输块时，即只接收到传输块1和传输块2时，根据第一指示信息就可以知道传输块3丢失了。并将在第一HARQ反馈窗口内下行传输块的接收与丢失结果通过HARQ反馈方式反馈给基站，以便基站确定重新向终端发送下行传输块3。
这里，下行传输块可以是指通过某一下行共享物理信道发送的下行数据。这里，在当前子帧之后的子帧且当前子载波之后的子载波上可以是指在当前子帧之后的子帧且当前子载波之后的频率更高的子载波上。请再次参见图3，以图3中码本2对应的传输块3、传输块4和传输块5为例，当当前接收到的传输块为传输块3，传输块4和传输块5相对传输块3为在当前子帧之后的子帧且当前子载波之后的频率更高的子载波上终端还需接收的传输块。这里，传输块4和传输块5对应的载波频率大于传输块3对应的载波频率。
本公开实施例中，终端能够根据第一指示信息确定在当前混合自动重传请求HARQ反馈窗口内，在当前子帧之后的子帧且当前子载波之后的子载波上，终端接收的下行传输块的数量。由于终端获得了还需接收的下行 传输块的数量，则终端根据还需接收的下行传输块的数量和已经接收到的下行传输块的信息确定基站发送的每个下行传输块是否丢失，减少了终端由于不知道基站发送的下行传输块的数量而导致的在进行HARQ反馈时反馈内容不明确的问题。
在一实施例中，步骤S110中，下行控制信息还包括第二指示信息；其中，第二指示信息，用于指示终端发送第一传输块的HARQ反馈和/或第二传输块的HARQ反馈；其中，第一传输块是当前使用的第一码本解码的传输块；第二传输块是第一码本之前使用的第二码本解码的传输块。
这里，码本与HARQ反馈窗口对应。例如，在第二HARQ反馈窗口内，第二传输块包括传输块1、传输块2和传输块3，这里，第二HARQ反馈窗口对应第二码本，传输块1、传输块2和传输块3分别通过第二码本解码。在第一HARQ反馈窗口内，第一传输块包括传输块3、传输块4和传输块5，这里，第一HARQ反馈窗口对应第一码本，传输块3、传输块4和传输块5分别通过第一码本解码。如果第二传输块所包括的传输块1、传输块2和传输块3对应的HARQ反馈为AAN，这里AAN用于表征传输块1、传输块2和传输块3对应的HARQ反馈内容分别为ACK、ACK和NACK，即传输块1和传输块2接收成功，传输块3丢失。如果第一传输块所包括的传输块3、传输块4和传输块5对应的HARQ反馈为AAA，这里AAA用于表征传输块1、传输块2和传输块3对应的HARQ反馈内容分别为ACK、ACK和ACK，即传输块1、传输块2和传输块3均接收成功。则当第二指示信息指示终端发送第一传输块的HARQ反馈和第二传输块的HARQ反馈，对应的HARQ反馈内容为AANAAA。
这里，当第二指示信息指示终端发送第一传输块的HARQ反馈，则对应的HARQ反馈内容为AAA。这里，第二传输块可以为多个，比如，第一传输块为第N个传输块，则第二传输块可以是第N-1个、第N-2个、第N-3 个传输块等，第二传输块也可以是第N-1个、第N-2个、第N-3个等中的多个传输块，例如，第N-1个和第N-2个。本实施例中，多个传输块一起进行HARQ反馈能够节省传输资源。
在一实施例中，当第二指示信息具有第一指示值时，用于指示终端发送第一传输块的HARQ反馈；当第二指示信息具有第二指示值时，用于指示终端发送第一传输块的HARQ反馈和第二传输块的HARQ反馈。
这里，第一指示值可以是第二指示信息中某个字段对应的值，例如，第二指示信息包括字段XXX01XX，则字段中01即为第一指示值，用于确定发送第一传输块的HARQ反馈。又比如，第二指示信息包括字段XXX10XX，则字段中10即为第一指示值，用于确定发送第一传输块的HARQ反馈和第二传输块的HARQ反馈。这里，发送第一传输块的HARQ反馈可以是指只对当前HARQ反馈窗口中的传输块的接收情况进行HARQ反馈。发送第一传输块的HARQ反馈和第二传输块的HARQ反馈可以是指将其他HARQ反馈窗口中的传输块的接收结果和当前HARQ反馈窗口中的传输块的接收结果一起进行HARQ反馈。
在一实施例中，当事先接收的第二传输块的HARQ反馈接收成功时，第二指示信息具有第一指示值，第一指示值用于指示终端发送第一传输块的HARQ反馈；当事先接收的第二传输块的HARQ反馈接收失败时，第二指示信息具有第二指示值，第二指示值用于指示终端发送第一传输块和第二传输块的HARQ反馈。
这里，事先接收的第二传输块的HARQ反馈可以是在当前HARQ反馈窗口之前的一个HARQ反馈窗口或多个HARQ反馈窗口内接收的第二传输块的HARQ反馈，例如第N-1个HARQ反馈窗口或第N-1、第N-2和第N-3个HARQ反馈窗口内接收的第二传输块的HARQ反馈。这里，第二传输块的HARQ反馈接收成功可以是指在基站发送第二传输块后的第一时间 段内接收到HARQ反馈。第二传输块的HARQ反馈接收失败可以是指在基站发送第二传输块后的第一时间段内没有接收到HARQ反馈。这里，当事先接收的第二传输块的HARQ反馈接收成功时，可以将第二指示信息的第一指示值设置为01，第一指示值用于指示终端发送第一传输块的HARQ反馈；当事先接收的第二传输块的HARQ反馈接收失败时，可以将第二指示信息的第一指示值设置为10，第二指示值用于指示终端发送第一传输块和第二传输块的HARQ反馈。
在一实施例中，第二指示信息占用的比特数所确定的数值信息，用于指示终端在发送第一传输块的HARQ反馈和第二传输块的HARQ反馈时，确定进行HARQ反馈的第二传输块的数量。
这里，以第二指示信息所占用2个比特数为例，2个比特数能够表征的数值分别可以为01、10、11，则，可以设置数值为01时，确定进行HARQ反馈的第二传输块的数量对应为0，即HARQ反馈时只发送当前第一传输块的HARQ反馈；设置数值为10时，确定进行HARQ反馈的第二传输块的数量对应为1，即HARQ反馈时会发送第一传输块的HARQ反馈和第一传输块之前的一个传输块的HARQ反馈；设置数值为11时，确定进行HARQ反馈的第二传输块的数量对应为2，即HARQ反馈时发送第一传输块和第一传输块之前的连续两个传输块的HARQ反馈。这里，需要说明的是，第二指示信息可以占用任一设置数量的比特数，用于表征HARQ反馈时发送第一传输块和第一传输块之前的连续多个传输块的HARQ反馈，例如3位、4位等。
在一实施例中，下行控制信息包括第三指示信息，方法还包括：将第三指示信息设置为HARQ反馈窗口间的计数模式，其中，当事先接收的第二传输块的HARQ反馈接收失败时，HARQ反馈窗口间的计数模式为连续计数模式，第三指示信息用于指示在HARQ反馈窗口内，在当前子帧及当 前子帧之前的子帧且当前子载波及当前子载波之前的子载波上，终端接收到下行传输块的数量。
这里，第三指示信息可以理解为用于指示在当前HARQ反馈窗口内，到当前子帧且当前子载波为止，对于终端而言可以接收到多少个下行数据。
这里，在当前子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的子载波上可以是指在当前子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的频率更低的子载波上。这里，终端能够基于第三指示信息，确定在HARQ反馈窗口内，在当前子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的子载波上，能够接收到下行传输块的数量，以进一步确定传输块的接收情况。例如，当前HARQ窗口内，第四个传输块4对应的第三指示信息包含的字段设置值为4，则终端在接收到第三指示信息后可以知道在当前HARQ窗口内，在第四个传输块之前共发送了3个传输块。
这里，当事先接收的第二传输块的HARQ反馈接收失败时，HARQ反馈窗口间的计数模式为连续计数模式，能够方便终端在第一传输块和第二传输块一起反馈时，确定第二传输块的传输情况。例如，第一传输块对应当前的HARQ反馈窗口，第二传输块对应当前的HARQ反馈窗口之前的HARQ反馈窗口，当第二传输块的HARQ反馈接收失败时，在两个HARQ反馈窗口间进行连续计数，就可以确定当前应该反馈的下行传输块的数量。
如图9所示，本公开另一实施例提供一种HARQ反馈增强的方法，方法包括：
步骤S210：接收包含第一指示信息的下行控制信息；
步骤S220：根据第一指示信息，确定在当前混合自动重传请求HARQ反馈窗口内，在当前子帧之后的子帧且当前子载波之后的子载波上，接收的下行传输块的数量。
这里，在基于传输块的混合自动重传请求HARQ反馈进行数据传输时，数据接收端确定是否正确接收数据。当正确接收到数据时，反馈ACK；当没有正确接收到数据时，反馈NACK。这里，ACK/NACK是在物理上行控制信道(PUCCH，Physical Uplink Control Channel)或是物理上行共享信道(PUSCH,Physical Uplink Shared Channel)上传输的。这里，在时分双工系统中，发送多个下行子帧的下行共享物理信道可能通过同一上行子帧反馈ACK或NACK。同一个上行子帧对应的所有的下行子帧组成集合K，将集合K中所有的下行子帧统称为一个HARQ反馈窗口。终端根据还需接收的下行传输块的数量并根据自身实际已经接收到的下行传输块的信息就可以确定基站发送的每个下行传输块是否丢失，例如，基站发送了6个传输块，分别为传输块1、传输块2、传输块3、传输块4、传输块5和传输块6。对应的第一指示信息包括的字段值分别为5、4、3、2、1、0，传输过程中丢失了传输块2和传输块5，则终端根据自身实际依次接收到的传输块1、传输块3、传输块4、传输块6的信息，并结合传输块1、传输块3、传输块4、传输块6对应的第一指示信息对应的字段值确定传输块2和传输块5丢失。并将下行传输块的接收与丢失结果通过HARQ反馈方式反馈给基站，以便基站确定重新向终端发送下行传输块还是向终端发送新的下行传输块。
例如，基站在第一HARQ反馈窗口内向终端发送了3个下行传输块，分别为传输块1、传输块2和传输块3。在终端成功接收了传输块1和传输块2时，传输块2对应指示的第一指示信息指示还需要接收1个传输块。但传输块3在传输过程中丢失，当终端确认在第一HARQ反馈窗口内只接收到2个传输块时，即只接收到传输块1和传输块2时，根据第一指示信息就可以知道传输块3丢失了。并将在第一HARQ反馈窗口内下行传输块的接收与丢失结果通过HARQ反馈方式反馈给基站，以便基站确定重新向终端发送下行传输块3。
这里，下行传输块可以是指通过某一下行共享物理信道发送的下行数据。这里，在当前子帧之后的子帧且当前子载波之后的子载波上可以是指在当前子帧之后的子帧且当前子载波之后的频率更高的子载波上。请再次参见图3，以图3中码本2对应的传输块3、传输块4和传输块5为例，当当前接收到的传输块为传输块3，传输块4和传输块5相对传输块3为在当前子帧之后的子帧且当前子载波之后的频率更高的子载波上终端还需接收的传输块。这里，传输块4和传输块5对应的载波频率大于传输块3对应的载波频率。
本公开实施例中，终端能够根据第一指示信息确定在当前混合自动重传请求HARQ反馈窗口内，在当前子帧之后的子帧且当前子载波之后的子载波上，终端接收的下行传输块的数量。由于终端获得了还需接收的下行传输块的数量，则终端根据还需接收的下行传输块的数量和已经接收到的下行传输块的信息确定基站发送的每个下行传输块是否丢失，减少了终端由于不知道基站发送的下行传输块的数量而导致的在进行HARQ反馈时反馈内容不明确的问题。
在一实施例中，下行控制信息还包括第二指示信息；步骤S210中，根据第二指示信息，发送第一传输块的HARQ反馈和/或第二传输块的HARQ反馈；其中，第一传输块是当前使用的第一码本解码的传输块；第二传输块是第一码本之前使用的第二码本解码的传输块。
这里，码本与HARQ反馈窗口对应。例如，在第二HARQ反馈窗口内，第二传输块包括传输块1、传输块2和传输块3，这里，第二HARQ反馈窗口对应第二码本，传输块1、传输块2和传输块3分别通过第二码本解码。在第一HARQ反馈窗口内，第一传输块包括传输块3、传输块4和传输块5，这里，第一HARQ反馈窗口对应第一码本，传输块3、传输块4和传输块5分别通过第一码本解码。如果第二传输块所包括的传输块1、传输块2和传 输块3对应的HARQ反馈为AAN，这里AAN用于表征传输块1、传输块2和传输块3对应的HARQ反馈内容分别为ACK、ACK和NACK，即传输块1和传输块2发送成功，传输块3丢失。如果第一传输块所包括的传输块3、传输块4和传输块5对应的HARQ反馈为AAA，这里AAA用于表征传输块1、传输块2和传输块3对应的HARQ反馈内容分别为ACK、ACK和ACK，即传输块1、传输块2和传输块3均发送成功。则当第二指示信息指示终端发送第一传输块的HARQ反馈和第二传输块的HARQ反馈，对应的HARQ反馈内容为AANAAA。
这里，当第二指示信息指示终端发送第一传输块的HARQ反馈，则对应的HARQ反馈内容为AAA。这里，第二传输块可以为多个，比如，第一传输块为第N个传输块，则第二传输块可以是第N-1个、第N-2个、第N-3个传输块等，第二传输块也可以是第N-1个、第N-2个、第N-3个等中的多个传输块，例如，第N-1个和第N-2个。本实施例中，多个传输块一起进行HARQ反馈能够节省传输资源。
这里，当第二指示信息具有第一指示值时，终端发送第一传输块的HARQ反馈；当第二指示信息具有第二指示值时，终端发送第一传输块的HARQ反馈和第二传输块的HARQ反馈。
这里，第一指示值可以是第二指示信息中某个字段对应的值，例如，第二指示信息包括字段XXX01XX，则字段中01即为第一指示值，用于确定发送第一传输块的HARQ反馈。又比如，第二指示信息包括字段XXX10XX，则字段中10即为第一指示值，用于确定发送第一传输块的HARQ反馈和第二传输块的HARQ反馈。这里，发送第一传输块的HARQ反馈可以是指只对当前HARQ反馈窗口中的传输块的接收情况进行HARQ反馈。发送第一传输块的HARQ反馈和第二传输块的HARQ反馈可以是指将其他HARQ反馈窗口中的传输块的接收结果和当前HARQ反馈窗口中的 传输块的接收结果一起进行HARQ反馈。
在一实施例中，根据第二指示信息占用的比特数所确定的数值信息，在发送第一传输块的HARQ反馈和第二传输块的HARQ反馈时，确定进行HARQ反馈的第二传输块的数量。。
这里，以第二指示信息所占用2个比特数为例，2个比特数能够表征的数值分别可以为01、10、11，则，可以设置数值为01时，确定进行HARQ反馈的第二传输块的数量对应为0，即HARQ反馈时只发送当前第一传输块的HARQ反馈；设置数值为10时，确定进行HARQ反馈的第二传输块的数量对应为1，即HARQ反馈时会发送第一传输块的HARQ反馈和第一传输块之前的一个传输块的HARQ反馈；设置数值为11时，确定进行HARQ反馈的第二传输块的数量对应为2，即HARQ反馈时发送第一传输块和第一传输块之前的连续两个传输块的HARQ反馈。这里，需要说明的是，第二指示信息可以占用任一设置数量的比特数，用于表征HARQ反馈时发送第一传输块和第一传输块之前的连续多个传输块的HARQ反馈，例如，2位、3位等。
在一实施例中，所述下行控制信息还包括第三指示信息，所述方法还包括：当所述第二指示信息指示发送第一传输块的HARQ反馈和第二传输块的HARQ反馈时，确定所述第三指示信息为HARQ反馈窗口间的连续计数模式；其中，所述第三指示信息用于指示在连续的HARQ反馈窗口内，在当前子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的子载波上，终端接收到下行传输块的数量；根据第一指示信息和第三指示信息确定HARQ反馈的反馈内容。
这里，在当前子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的载波上可以是指在当前子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的频率更低的子载波上。这里，终端能够基于第三指示信 息，确定在HARQ反馈窗口内，在当前子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的子载波上，能够接收到下行传输块的数量，以进一步确定传输块的接收情况。例如，当前HARQ窗口内，第四个传输块4对应的第三指示信息包含的字段设置值为4，则终端在接收到第三指示信息后可以知道在当前HARQ窗口内，在第四个传输块之前共发送了3个传输块。
这里，当所述第二指示信息指示发送第一传输块的HARQ反馈和第二传输块的HARQ反馈时，HARQ反馈窗口间的计数模式为连续计数模式，能够方便终端在第一传输块和第二传输块一起反馈时，确定第二传输块的传输情况。例如，第一传输块对应当前的HARQ反馈窗口，第二传输块对应当前的HARQ反馈窗口之前的HARQ反馈窗口，当第二传输块的HARQ反馈失败时，当所述第二指示信息指示发送第一传输块的HARQ反馈和第二传输块的HARQ反馈时，在两个HARQ反馈窗口间进行连续计数，就可以确定当前应该反馈的下行传输块的数量。
这里，根据第一指示信息和第三指示信息确定HARQ反馈的反馈内容。例如，第三指示信息包括的字段值为6，即基站发送了6个传输块，分别为传输块1、传输块2、传输块3、传输块4、传输块5和传输块6。对应的第一指示信息包括的字段值分别为5、4、3、2、1、0，传输过程中丢失了传输块2和传输块5。则终端根据自身实际依次接收到的传输块1、传输块3、传输块4、传输块6的信息，并结合传输块1、传输块3、传输块4、传输块6对应的第一指示信息对应的字段值、第三指示信息对应的字段值确定传输块2和传输块5丢失。并将下行传输块的接收与丢失结果通过HARQ反馈方式反馈给基站，
进一步地，本公开还提供了1个具体实施例，以进一步理解本公开实施例所提供的HARQ反馈增强的方法。
示例1：
请参见图10，由于码本2的部分下行传输块丢失(传输块5丢失)并且其HARQ反馈失败(图10中对应②)，基站将码本3的第二指示信息的触发指示TI(TI，Trigger Indication)设置为2，触发终端将码本2的数据接收情况与码本3一起反馈，终端在接收到基站下发的码本3时，根据TI＝2知道码本2的HARQ反馈失败并将码本2和3的HARQ反馈在码本3所指示的反馈资源中一起传输，根据C-DAI和AC-DAI指示终端可以判断出码本2和3所对应的HARQ反馈内容为AANAA。这里，AC-DAI可以理解为用于指示在当前HARQ反馈窗口内，到当前子帧且当前子载波为止其后续子帧及后续所有子载波上还有多少个下行数据需要接收，用户根据其接收情况判断后续下行数据对应的A或N。
本示例在对先前的HARQ码本重传在当前的HARQ码本中间被触发的场景中，可减少出现基站和终端之间HARQ反馈不明确的问题。请参见图11a、图11b和图11c，由于UL1反馈失败，基站将码本2的TI设置为2触发用户将码本1的数据接收情况与码本2一起反馈，虽然本方案在图11a、图11b和图11c对应的三种场景下虽触发相同的重传指示，但由于终端对每个码本有不同的理解，因此不会出错，例如：在图11a中，终端接收到码本1的下行传输块1时,根据AC-DAI指示判断出当前码本还有2个下行传输块待接收，当接收失败时，终端判断出码本1需要反馈的HARQ内容为ANN；当基站开始发送码本2的下行传输块4时，由于还未检测到码本1的反馈失败，因此此时不触发HARQ反馈；用户根据下行传输块4中的AC-DAI指示知道后续还有两个下行传输块需要接收，当基站检测到码本1的HARQ反馈失败时，将下行传输块5和下行传输块6中的触发指示TI设置为2触发用户将码本1和2一起反馈，终端根据对码本2中的下行传输块的接收情况，判断码本2对应的HARQ内容为AAA，并将码本1和2 的HARQ反馈内容ANNAAA在UL2上反馈给基站。
同理，在11b、11c中，终端分别将ANANAA及AANNAA在UL2上反馈给基站，不会出现终端错误反馈HARQ的情况，从而减少了基站和用户之间HARQ反馈码本不明确的问题。
本公开一实施例提供一种HARQ反馈增强的装置，其中，装置包括发送模块，发送模块配置为向终端发送包含第一指示信息的下行控制信息；其中，第一指示信息用于指示在当前混合自动重传请求HARQ反馈窗口内，在当前子帧之后的子帧且当前子载波之后的子载波上，终端接收的下行传输块的数量。
在一实施例中，发送模块还配置为下行控制信息还包括第二指示信息；其中，第二指示信息，用于指示终端发送第一传输块的HARQ反馈和/或第二传输块的HARQ反馈；其中，第一传输块是当前使用的第一码本解码的传输块；第二传输块是第一码本之前使用的第二码本解码的传输块。
在一实施例中，发送模块还配置为当事先接收的第二传输块的HARQ反馈接收成功时，第二指示信息具有第一指示值，第一指示值用于指示终端发送第一传输块的HARQ反馈；当事先接收的第二传输块的HARQ反馈接收失败时，第二指示信息具有第二指示值，第二指示值用于指示终端发送第一传输块和第二传输块的HARQ反馈。
在一实施例中，发送模块还配置为第二指示信息占用的比特数所确定的数值信息，用于指示终端在发送第一传输块的HARQ反馈和第二传输块的HARQ反馈时，确定进行HARQ反馈的第二传输块的数量。
在一实施例中，下行控制信息包括第三指示信息，发送模块还配置为
将第三指示信息设置为HARQ反馈窗口间的计数模式，其中，当事先接收的第二传输块的HARQ反馈接收失败时，HARQ反馈窗口间的计数模式为连续计数模式，第三指示信息用于指示在HARQ反馈窗口内，在当前 子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的子载波上，终端接收到下行传输块的数量。
本公开另一实施例提供一种HARQ反馈增强的装置，其中，装置包括接收模块，接收模块配置为接收包含第一指示信息的下行控制信息；根据第一指示信息，确定在当前混合自动重传请求HARQ反馈窗口内，在当前子帧之后的子帧且当前子载波之后的子载波上，接收的下行传输块的数量。
在一实施例中，下行控制信息还包括第二指示信息，接收模块还配置为根据第二指示信息，发送第一传输块的HARQ反馈和/或第二传输块的HARQ反馈；其中，第一传输块是当前使用的第一码本解码的传输块；第二传输块是第一码本之前使用的第二码本解码的传输块。
在一实施例中，接收模块还配置为根据第二指示信息占用的比特数所确定的数值信息，在发送第一传输块的HARQ反馈和第二传输块的HARQ反馈时，确定进行HARQ反馈的第二传输块的数量。
在一实施例中，下行控制信息还包括第三指示信息，接收模块还配置为当所述第二指示信息指示发送第一传输块的HARQ反馈和第二传输块的HARQ反馈时，确定所述第三指示信息为HARQ反馈窗口间的连续计数模式；其中，所述第三指示信息用于指示在连续的HARQ反馈窗口内，在当前子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的子载波上，终端接收到下行传输块的数量；接收模块还配置为根据第一指示信息和第三指示信息确定HARQ反馈的反馈内容。
本公开实施例还提供一种通信设备，包括：
天线；
存储器；
处理器，分别与天线及存储器连接，用于通过执行存储在存储器上 的可执行程序，控制天线收发无线信号，并能够执行前述任意实施例提供的竞争窗口的确定方法的步骤。
本实施例提供的通信设备可为前述的终端或基站。该终端可为各种人载终端或车载终端。基站可为各种类型的基站，例如，4G基站或5G基站等。
天线可为各种类型的天线、例如，3G天线、4G天线或5G天线等移动天线；天线还可包括：WiFi天线或无线充电天线等。
存储器可包括各种类型的存储介质，该存储介质为非临时性计算机存储介质，在通信设备掉电之后能够继续记忆存储其上的信息。
处理器可以通过总线等与天线和存储器连接，用于读取存储器上存储的可执行程序，例如，如图8和图9所示方法的至少其中之一。
本公开实施例还提供一种非临时性计算机可读存储介质，非临时性计算机可读存储介质存储有可执行程序，其中，可执行程序被处理器执行时实现前述任意实施例提供的竞争窗口的确定方法的步骤，例如，如图8和图9所示方法的至少其中之一。
如图14所示，本公开一实施例提供一种终端的结构。
参照图12所示终端800本实施例提供一种终端800，该终端具体可是移动电话，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12，终端800可以包括以下一个或多个组件：处理组件802，存储器804，电源组件806，多媒体组件808，音频组件810，输入/输出(I/O)的接口812，传感器组件814，以及通信组件816。
处理组件802通常控制终端800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。处理组件802可以包括一 个或多个处理器820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802可以包括一个或多个模块，便于处理组件802和其他组件之间的交互。例如，处理组件802可以包括多媒体模块，以方便多媒体组件808和处理组件802之间的交互。
存储器804被配置为存储各种类型的数据以支持在设备800的操作。这些数据的示例包括用于在终端800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804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。
电源组件806为终端800的各种组件提供电力。电源组件806可以包括电源管理系统，一个或多个电源，及其他与为终端800生成、管理和分配电力相关联的组件。
多媒体组件808包括在终端800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。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808包括一个前置摄像头和/或后置摄像头。当设备800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810被配置为输出和/或输入音频信号。例如，音频组件810 包括一个麦克风(MIC)，当终端800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804或经由通信组件816发送。在一些实施例中，音频组件810还包括一个扬声器，用于输出音频信号。
I/O接口812为处理组件802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814包括一个或多个传感器，用于为终端800提供各个方面的状态评估。例如，传感器组件814可以检测到设备800的打开/关闭状态，组件的相对定位，例如组件为终端800的显示器和小键盘，传感器组件814还可以检测终端800或终端800一个组件的位置改变，用户与终端800接触的存在或不存在，终端800方位或加速/减速和终端800的温度变化。传感器组件814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814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814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816被配置为便于终端800和其他设备之间有线或无线方式的通信。终端800可以接入基于通信标准的无线网络，如Wi-Fi，2G或3G，或它们的组合。在一个示例性实施例中，通信组件816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，通信组件816还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，终端800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804，上述指令可由终端800的处理器820执行以完成上述方法。例如，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。
该终端可以用于实现前述的能力参数处理方法，例如，如图8和图9所示的HARQ反馈增强的方法。
如图13所示，本公开一实施例提供一种基站的结构。例如，基站900可以被提供为一网络侧设备。参照图13，基站900包括处理组件922，其进一步包括一个或多个处理器，以及由存储器932所代表的存储器资源，用于存储可由处理组件922的执行的指令，例如应用程序。存储器932中存储的应用程序可以包括一个或一个以上的每一个对应于一组指令的模块。此外，处理组件922被配置为执行指令，以执行上述方法前述任意实施例提供的随机接入方法，例如，如图8和图9所示的HARQ反馈增强的方法。
基站900还可以包括一个电源组件926被配置为执行基站900的电源管理，一个有线或无线网络接口950被配置为将基站900连接到网络，和一个输入输出(I/O)接口958。基站900可以操作基于存储在存储器932的操作系统，例如Windows ServerTM，Mac OS XTM，UnixTM,LinuxTM，FreeBSDTM或类似。
该无线网络接口950包括但不限于前述通信设备的天线。本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本申请的其它实施方案。本申请旨在涵盖本申请的任何变型、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申请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，本申请的真正范围和精神由下面的权利要求指出。
应当理解的是，本申请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。本申请的范围仅由所附的权利要求来限制。

Claims (20)

  1. 一种HARQ反馈增强的方法，其中，所述方法包括：
    向终端发送包含第一指示信息的下行控制信息；其中，所述第一指示信息用于指示在当前混合自动重传请求HARQ反馈窗口内，在当前子帧之后的子帧且当前子载波之后的子载波上，所述终端接收的下行传输块的数量。
  2. 根据权利要求1的方法，其中，所述方法还包括：
    所述下行控制信息还包括第二指示信息；其中，所述第二指示信息，用于指示所述终端发送第一传输块的HARQ反馈和/或第二传输块的HARQ反馈；其中，所述第一传输块是当前使用的第一码本解码的传输块；所述第二传输块是所述第一码本之前使用的第二码本解码的传输块。
  3. 根据权利要求2的方法，其中，所述方法还包括：
    当事先接收的所述第二传输块的HARQ反馈接收成功时，所述第二指示信息具有第一指示值，所述第一指示值用于指示所述终端发送所述第一传输块的HARQ反馈；
    当事先接收的所述第二传输块的HARQ反馈接收失败时，所述第二指示信息具有第二指示值，所述第二指示值用于指示所述终端发送所述第一传输块和所述第二传输块的HARQ反馈。
  4. 根据权利要求2的方法，其中，所述方法还包括：
    所述第二指示信息占用的比特数所确定的数值信息，用于指示所述终端在发送所述第一传输块的HARQ反馈和所述第二传输块的HARQ反馈时，确定进行HARQ反馈的所述第二传输块的数量。
  5. 根据权利要求1的方法，其中，所述下行控制信息包括第三指示信息，所述方法还包括：
    将所述第三指示信息设置为HARQ反馈窗口间的计数模式，其中，当 事先接收的所述第二传输块的HARQ反馈接收失败时，所述HARQ反馈窗口间的计数模式为连续计数模式，所述第三指示信息用于指示在HARQ反馈窗口内，在当前子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的子载波上，所述终端接收到下行传输块的数量。
  6. 一种HARQ反馈增强的方法，其中，所述方法包括：
    接收包含第一指示信息的下行控制信息；
    根据所述第一指示信息，确定在当前混合自动重传请求HARQ反馈窗口内，在当前子帧之后的子帧且当前子载波之后的子载波上，接收的下行传输块的数量。
  7. 根据权利要求6的方法，其中，所述下行控制信息还包括第二指示信息，所述方法还包括：
    根据所述第二指示信息，发送第一传输块的HARQ反馈和/或第二传输块的HARQ反馈；其中，所述第一传输块是当前使用的第一码本解码的传输块；所述第二传输块是所述第一码本之前使用的第二码本解码的传输块。
  8. 根据权利要求7的方法，其中，所述方法还包括：
    根据所述第二指示信息占用的比特数所确定的数值信息，在发送所述第一传输块的HARQ反馈和所述第二传输块的HARQ反馈时，确定进行HARQ反馈的所述第二传输块的数量。
  9. 根据权利要求7的方法，其中，所述下行控制信息还包括第三指示信息，所述方法还包括：当所述第二指示信息指示发送第一传输块的HARQ反馈和第二传输块的HARQ反馈时，确定所述第三指示信息为HARQ反馈窗口间的连续计数模式；其中，所述第三指示信息用于指示在连续的HARQ反馈窗口内，在当前子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的子载波上，终端接收到下行传输块的数量；
    根据所述第一指示信息和所述第三指示信息确定HARQ反馈的反馈内 容。
  10. 一种HARQ反馈增强的装置，其中，所述装置包括发送模块，所述发送模块配置为向终端发送包含第一指示信息的下行控制信息；其中，所述第一指示信息用于指示在当前混合自动重传请求HARQ反馈窗口内，在当前子帧之后的子帧且当前子载波之后的子载波上，所述终端接收的下行传输块的数量。
  11. 根据权利要求10的装置，其中，所述发送模块还配置为所述下行控制信息还包括第二指示信息；其中，所述第二指示信息，用于指示所述终端发送第一传输块的HARQ反馈和/或第二传输块的HARQ反馈；其中，所述第一传输块是当前使用的第一码本解码的传输块；所述第二传输块是所述第一码本之前使用的第二码本解码的传输块。
  12. 根据权利要求11的装置，其中，所述发送模块还配置为当事先接收的所述第二传输块的HARQ反馈接收成功时，所述第二指示信息具有第一指示值，所述第一指示值用于指示所述终端发送所述第一传输块的HARQ反馈；当事先接收的所述第二传输块的HARQ反馈接收失败时，所述第二指示信息具有第二指示值，所述第二指示值用于指示所述终端发送所述第一传输块和所述第二传输块的HARQ反馈。
  13. 根据权利要求11的装置，其中，所述发送模块还配置为所述第二指示信息占用的比特数所确定的数值信息，用于指示所述终端在发送所述第一传输块的HARQ反馈和所述第二传输块的HARQ反馈时，确定进行HARQ反馈的所述第二传输块的数量。
  14. 根据权利要求10的装置，其中，所述下行控制信息包括第三指示信息，所述发送模块还配置为将所述第三指示信息设置为HARQ反馈窗口间的计数模式，其中，当事先接收的所述第二传输块的HARQ反馈接收失败时，所述HARQ反馈窗口间的计数模式为连续计数模式，所述第三指示 信息用于指示在HARQ反馈窗口内，在当前子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的子载波上，所述终端接收到下行传输块的数量。
  15. 一种HARQ反馈增强的装置，其中，所述装置包括接收模块，所述接收模块配置为接收包含第一指示信息的下行控制信息；根据所述第一指示信息，确定在当前混合自动重传请求HARQ反馈窗口内，在当前子帧之后的子帧且当前子载波之后的子载波上，接收的下行传输块的数量。
  16. 根据权利要求15的装置，其中，所述下行控制信息还包括第二指示信息，所述接收模块还配置为根据所述第二指示信息，发送第一传输块的HARQ反馈和/或第二传输块的HARQ反馈；其中，所述第一传输块是当前使用的第一码本解码的传输块；所述第二传输块是所述第一码本之前使用的第二码本解码的传输块。
  17. 根据权利要求16的装置，其中，所述接收模块还配置为根据所述第二指示信息占用的比特数所确定的数值信息，在发送所述第一传输块的HARQ反馈和所述第二传输块的HARQ反馈时，确定进行HARQ反馈的所述第二传输块的数量。
  18. 根据权利要求16的装置，其中，所述下行控制信息还包括第三指示信息，所述接收模块还配置为当所述第二指示信息指示发送第一传输块的HARQ反馈和第二传输块的HARQ反馈时，确定所述第三指示信息为HARQ反馈窗口间的连续计数模式；其中，所述第三指示信息用于指示在连续的HARQ反馈窗口内，在当前子帧及当前子帧之前的子帧且当前子载波及当前子载波之前的子载波上，终端接收到下行传输块的数量；根据所述第一指示信息和所述第三指示信息确定HARQ反馈的反馈内容。
  19. 一种通信设备，其中，包括：
    天线；
    存储器；
    处理器，分别与所述天线及所述存储器连接，用于通过执行存储在所述存储器上的可执行程序，控制所述天线收发无线信号，并能够执行如权利要求1至5、或6至9任一项所述的HARQ反馈增强的方法的步骤。
  20. 一种非临时性计算机可读存储介质，所述非临时性计算机可读存储介质存储有可执行程序，其中，可执行程序被处理器执行时实现如权利要求1至5、或6至9任一项所述的HARQ反馈增强的方法的步骤。
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