WO2020143834A1 - 一种旁链路中的反馈资源确定方法及设备 - Google Patents

一种旁链路中的反馈资源确定方法及设备 Download PDF

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Publication number
WO2020143834A1
WO2020143834A1 PCT/CN2020/071812 CN2020071812W WO2020143834A1 WO 2020143834 A1 WO2020143834 A1 WO 2020143834A1 CN 2020071812 W CN2020071812 W CN 2020071812W WO 2020143834 A1 WO2020143834 A1 WO 2020143834A1
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WIPO (PCT)
Prior art keywords
resource
terminal
window
harq feedback
feedback information
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Ceased
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PCT/CN2020/071812
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English (en)
French (fr)
Inventor
李晓翠
徐海博
薛祎凡
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to US17/422,326 priority Critical patent/US11985666B2/en
Priority to EP20738281.3A priority patent/EP3890222A4/en
Priority to JP2021540215A priority patent/JP2022517080A/ja
Publication of WO2020143834A1 publication Critical patent/WO2020143834A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1861Physical mapping arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/1607Details of the supervisory signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867Arrangements specially adapted for the transmitter end
    • H04L1/1893Physical mapping arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0055Physical resource allocation for ACK/NACK
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078Timing of allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1864ARQ related signaling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867Arrangements specially adapted for the transmitter end
    • H04L1/1896ARQ related signaling

Definitions

  • the present application relates to the field of wireless communication technology, and in particular, to a method and device for determining feedback resources in sidelinks.
  • V2X applications can include vehicles and vehicles (V2V), vehicles and roadside infrastructure (V2I), vehicles and pedestrians (vehicle to pedestrians, V2P), and vehicle and application servers (vehicle toto network, V2N).
  • V2V vehicles and vehicles
  • V2I vehicles and roadside infrastructure
  • V2P vehicles and pedestrians
  • V2N vehicle and application servers
  • the application of V2X can improve driving safety, reduce congestion and vehicle energy consumption, improve traffic efficiency and in-vehicle entertainment information.
  • FIGS. 1a and 1b a schematic diagram of a network architecture for communication between a terminal and a terminal may be as shown in FIGS. 1a and 1b, and terminal 1 and terminal 2 may communicate through sidelinks.
  • the network device determines the resources used in sidelink communication for the terminal. For example, as shown in FIG.
  • both terminal 1 and terminal 2 are located in the coverage area of the base station If you can communicate with the base station in time, the base station can determine the resources used by terminal 1 and terminal 2 for communication; mode 2 (mode 2), the terminal determines the resources used in sidelink communication, for example, as shown in Figure 2b As shown, terminal 1 (sender) and terminal 2 (receiver) are currently not in the coverage of the base station and cannot communicate with the base station in time. Generally, the base station will pre-configure resource pools for terminal 1 and terminal 2, and terminal 1 determines it by itself Resources used when sending data to terminal 2.
  • the present application provides a method and device for determining feedback resources in a side link to solve the problem of how to determine HARQ feedback resources at the receiving end and the sending end in sidelink communication.
  • the present application provides a method for determining feedback resources in a side link, including:
  • the first terminal sends side link control information SCI to the second terminal, where the SCI includes indication information used to instruct the second terminal to send the first resource occupied by the HARQ feedback information of the hybrid automatic repeat request Or a first resource window, the first resource window includes a plurality of candidate first resources;
  • the second terminal sends HARQ feedback information to the first terminal on the first resource, or sends HARQ feedback information to the first terminal within the first resource window; correspondingly, the first terminal receives the first terminal HARQ feedback information, or monitor HARQ feedback information sent by the second terminal in the first resource window.
  • the first terminal may determine the resource occupied by the second terminal to send HARQ feedback information, or the second terminal may select the resource occupied by the HARQ feedback information by itself within the resource window indicated by the first terminal , Thereby achieving HARQ feedback in sidelink communication.
  • the The method further includes: the first terminal monitors the SCI sent by other terminals; the first terminal determines, according to the monitored SCI, the second resource occupied by the other terminal to send HARQ feedback information, and the other terminal A terminal other than the first terminal; the first terminal determines the first resource according to the second resource.
  • the above implementation manner helps to avoid collision between the first resource occupied by the second terminal sending HARQ feedback information and the resource occupied by other HARQ feedback information to the first terminal.
  • the indication information when used to instruct the second terminal to send a first resource window of HARQ feedback information, includes one or more of the following information: The size of the first resource window, the start position of the first resource window, and the end position of the first resource window.
  • the method when the first message is used to instruct the second terminal to send a first resource window of HARQ feedback information, the method further includes: the first terminal receives the The size of the first resource window; or, the first terminal receives a plurality of candidate sizes of the first resource windows sent by the network device, and the first terminal selects from the candidate sizes of the plurality of first resource windows The size of the first resource window.
  • the second terminal sending HARQ feedback information to the second terminal in the first resource window includes: the second terminal sends the first resource in the first resource window to the first resource in the first resource window.
  • a terminal sends HARQ feedback information, and the energy value monitored by the second terminal on the first resource is not higher than a preset threshold.
  • the second terminal selects the first resource from the first resource window, the resource whose energy value is not higher than the preset threshold is selected as the first resource, and the energy value is not higher than the preset threshold can be regarded as the resource
  • No other terminal sends a message on the PC, thereby avoiding conflicts between the HARQ feedback information sent by the second terminal and the messages sent by other terminals.
  • the second terminal sends HARQ feedback information to the first terminal on the first resource in the first resource window, and the energy value monitored by the second terminal on the first resource is not high
  • At preset thresholds including:
  • the second terminal monitors the energy value on the first candidate first resource in the first resource window, and if the energy value on the first candidate first resource is not higher than a preset threshold, the The first candidate first resource is used as the first resource; otherwise, the energy value is monitored on the second candidate first resource in the first resource window until the Nth candidate first resource is detected
  • the energy value of is not higher than a preset threshold, and the Nth candidate first resource is used as the first resource, where N is an integer greater than or equal to 1; the second terminal
  • the first terminal sends HARQ feedback information.
  • the second terminal may also determine a third resource occupied by the second terminal to send data to the third terminal, and the second terminal determines the first resource according to the third resource, thereby avoiding The HARQ feedback information sent by the second terminal to the first terminal conflicts with the message sent by the second terminal to the third terminal.
  • the first terminal and/or the second terminal are outside the coverage of the network device.
  • the present application provides a method for determining feedback resources in a side link, including:
  • the first terminal monitors the SCI sent by other terminals, and determines the first resource occupied by the other terminal to send data according to the monitored SCI; the first terminal sends data to the second terminal on the second resource, the The second resource is determined according to the first resource; accordingly, the second terminal receives data on the second resource; the second terminal sends HARQ feedback information to the first terminal on the third resource,
  • the third resource is determined according to the mapping relationship between the second resource and the third resource; accordingly, the first terminal receives the HARQ feedback information sent by the second terminal on the third resource.
  • an embodiment of the present application provides a method for determining feedback resources in a side link, including:
  • the first terminal monitors the first message sent by other terminals, the first message includes a first resource used to instruct other terminals to send the second message; the first terminal sends the second resource to the second terminal The third message; accordingly, the second terminal receives the third message on the second resource; the second terminal sends a fourth message to the first terminal on the third resource, the third resource is based on The mapping relationship between the second resource and the third resource is determined; accordingly, the first terminal receives the fourth message sent by the second terminal on the third resource.
  • an embodiment of the present application provides a terminal.
  • the terminal includes:
  • a sending unit configured to send an SCI to a second terminal, where the SCI includes instruction information used to instruct the second terminal to occupy the first resource or the first resource window occupied by the HARQ feedback information, the The first resource window includes multiple candidate first resources;
  • the receiving unit is configured to receive the HARQ feedback information sent by the second terminal on the first resource, or monitor the HARQ feedback information sent by the second terminal in the first resource window.
  • the receiving unit when the indication information is used to instruct the second terminal to send the first resource occupied by the HARQ feedback information, before the sending unit sends the SCI to the second terminal, the receiving unit is also used to :
  • the terminal monitors the SCI sent by other terminals; the terminal further includes a determining unit for determining, according to the monitored SCI, the second resource occupied by the other terminal for sending HARQ feedback information, the other terminal being the first terminal except the first terminal A terminal other than; determining the first resource according to the second resource.
  • the indication information when used to instruct the second terminal to send a first resource window of HARQ feedback information, includes one or more of the following information: The size of the first resource window, the start position of the first resource window, and the end position of the first resource window.
  • the receiving unit is further configured to: receive the first resource window sent by the network device The size, or the candidate size of the multiple first resource windows sent by the network device; the terminal further includes a selection unit for selecting the first resource window from the candidate sizes of the multiple first resource windows the size of.
  • the terminal and/or the second terminal are outside the coverage of the network device.
  • an embodiment of the present application provides a terminal.
  • the terminal includes:
  • the receiving unit is configured to receive the side link control information SCI sent by the first terminal, where the SCI includes indication information used to instruct the second terminal to send the HARQ feedback information occupied by the hybrid automatic repeat request.
  • a resource or a first resource window, the first resource window includes a plurality of candidate first resources;
  • the sending unit is configured to send HARQ feedback information to the first terminal on the first resource, or send HARQ feedback information to the first terminal in the first resource window.
  • the indication information when used to instruct the second terminal to send a first resource window of HARQ feedback information, includes one or more of the following information: The size of the first resource window, the start position of the first resource window, and the end position of the first resource window.
  • the sending unit is specifically configured to send HARQ feedback information to the first terminal on the first resource in the first resource window, and the receiving unit monitors on the first resource The received energy value is not higher than the preset threshold.
  • the receiving unit is specifically configured to: monitor the energy value on the first candidate first resource in the first resource window, if the energy value on the first candidate first resource If it is not higher than the preset threshold, the first candidate first resource is used as the first resource; otherwise, the energy value is monitored on the second candidate first resource in the first resource window until The energy value monitored on the Nth candidate first resource is not higher than a preset threshold, and the Nth candidate first resource is used as the first resource, where N is an integer greater than or equal to 1.
  • the terminal further includes a determining unit, configured to: determine a third resource occupied by the second terminal sending data to a third terminal; determine the first resource according to the third resource .
  • the first terminal and/or the second terminal are outside the coverage of the network device.
  • an embodiment of the present application provides a terminal, a processor, and a communication interface, where the processor is coupled to a memory and the communication interface;
  • the communication interface is used to communicate with other devices
  • the processor is used to execute instructions or programs in the memory and perform the following steps:
  • Send side link control information SCI to the second terminal through the communication interface includes indication information, the indication information is used to instruct the second terminal to send the hybrid automatic repeat request HARQ feedback information occupied by the first A resource or a first resource window, the first resource window includes a plurality of candidate first resources;
  • the processor when the indication information is used to instruct the second terminal to send the first resource occupied by the HARQ feedback information, the processor is further configured to: Before sending the SCI, the second terminal monitors the SCI sent by the other terminal through the communication interface; determines the second resource occupied by the other terminal to send HARQ feedback information according to the monitored SCI, and the other terminal is the first terminal except the first terminal A terminal other than; determining the first resource according to the second resource.
  • the indication information when used to instruct the second terminal to send a first resource window of HARQ feedback information, includes one or more of the following information: The size of the first resource window, the start position of the first resource window, and the end position of the first resource window.
  • the processor when the first message is used to instruct the second terminal to send the first resource window of the HARQ feedback information, the processor is further configured to: receive the network device through the communication interface The size of the first resource window; or, receiving the candidate sizes of the plurality of first resource windows sent by the network device through the communication interface, and the first terminal selects the candidate sizes of the plurality of first resource windows Select the size of the first resource window.
  • the first terminal and/or the second terminal are outside the coverage of the network device.
  • an embodiment of the present application provides a terminal, including: a processor and a communication interface, where the processor is coupled to a memory and the communication interface; the communication interface is used to communicate with other devices;
  • the processor is used to execute instructions or programs in the memory and perform the following steps:
  • the SCI includes indication information used to instruct the second terminal to send the hybrid automatic repeat request HARQ feedback information occupied by the first A resource or a first resource window, the first resource window includes a plurality of candidate first resources;
  • the indication information when used to instruct the second terminal to send a first resource window of HARQ feedback information, includes one or more of the following information: The size of the first resource window, the start position of the first resource window, and the end position of the first resource window.
  • the processor is specifically configured to: send HARQ feedback information to the first terminal on the first resource in the first resource window through the communication interface, and pass the The energy value monitored by the communication interface on the first resource is not higher than a preset threshold.
  • the processor is specifically configured to: monitor the energy value on the first candidate first resource in the first resource window through the communication interface, if the first candidate If the energy value on the first resource is not higher than the preset threshold, the first candidate first resource is used as the first resource; otherwise, the second candidate first resource in the first resource window Monitoring the energy value until the energy value monitored on the Nth candidate first resource is not higher than a preset threshold, and the Nth candidate first resource is regarded as the first resource, where N is greater than or equal to An integer of 1; sending HARQ feedback information to the first terminal on the first resource through the communication interface.
  • the processor is further configured to: determine a third resource occupied by the second terminal to send data to a third terminal; and determine the first resource according to the third resource.
  • the first terminal and/or the second terminal are outside the coverage of the network device.
  • the terminal may be a chip, and the memory may be an on-chip memory or an off-chip memory.
  • an embodiment of the present application provides a computer-readable storage medium that stores computer instructions, and when the instructions run on a computer, causes the computer to perform the first to third aspects The function performed by the first terminal in any method, or causing the computer to perform the function performed by the second terminal in any method of the first aspect to the third aspect.
  • an embodiment of the present application provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the functions performed by the first terminal in any method of the first aspect to the third aspect Or cause the computer to perform the function performed by the second terminal in any method of the first aspect to the third aspect.
  • the present application provides a chip connected to a memory, for reading and executing a software program stored in the memory, so as to implement the first method in any one of the above first to third methods
  • FIG. 1a and 1b are schematic diagrams of sidelink communications provided by embodiments of the present application.
  • FIG. 2a is a schematic diagram of a mode 1 scenario provided by an embodiment of this application.
  • FIG. 2b is a schematic diagram of a mode 2 scenario provided by an embodiment of this application.
  • FIG. 3 is a schematic flowchart of a method for determining feedback resources in sidelink provided by an embodiment of the present application
  • FIG. 5 is a schematic diagram of a first resource window for SCI indication provided by an embodiment of the present application.
  • FIG. 6 is a second schematic diagram of an SCI indicating a first resource provided by an embodiment of this application.
  • FIG. 7 is a second schematic diagram of a first resource window for SCI indication provided by an embodiment of this application.
  • FIG. 8 is a schematic flowchart of another method for determining feedback resources in a sidelink provided by an embodiment of the present application.
  • FIG. 9 is one of the schematic structural diagrams of a terminal provided by a strong embodiment.
  • FIG. 10 is a second structural schematic diagram of a terminal provided by a very strong embodiment
  • FIG. 11 is a third schematic diagram of a terminal structure provided by a very strong embodiment
  • FIG. 12 is the fourth schematic diagram of a terminal structure provided by a very strong embodiment.
  • the HARQ feedback technology means that the receiver saves the received data in the case of decoding failure and requests the sender to retransmit the data. The receiver merges the retransmitted data with the previously received data before decoding.
  • the sending terminal can send data to the receiving terminal on the sidelink resource, and the receiving terminal sends HARQ feedback information to the sending terminal through a physical sidelink feedback channel (PSFCH) in the sidelink to indicate whether the receiving terminal is correct
  • PSFCH physical sidelink feedback channel
  • the embodiments of the present application provide a method for determining feedback resources in sidelink, which is used to realize that the receiving end and the sending end in sidelink communication determine HARQ feedback information resources.
  • FIG. 3 it is a schematic flowchart of a feedback resource determination method in sidelink provided by an embodiment of the present application. As shown in the figure, the method may include the following steps:
  • Step 301 The first terminal sends sidelink control information (SCI) to the second terminal.
  • SCI includes indication information for instructing the second terminal to send the first resource or the first resource occupied by the HARQ feedback information.
  • Resource window The first resource window includes multiple candidate first resources.
  • the above indication information may be used to indicate the time-frequency resources occupied by the second terminal sending HARQ feedback information.
  • the above indication information may instruct the second terminal to send HARQ feedback information in the first resource window shown in FIG. 5, then the second terminal selects the first of the plurality of candidate first resources included in the first resource window Resources and send HARQ feedback information.
  • Step 302a If the above indication information indicates the first resource, the second terminal sends HARQ feedback information to the first terminal on the first resource; on the other hand, the first terminal receives HARQ feedback information on the first resource.
  • Step 302b If the above indication information indicates the first resource window, the second terminal selects the first resource in the first resource window to send HARQ feedback information to the first terminal; on the other hand, because the first terminal is not sure about the second The terminal sends HARQ feedback information on which resource in the first resource window, so the first terminal monitors whether the second terminal has sent HARQ feedback information in the first resource window, and if it detects the HARQ feedback information sent by the second terminal, that is To receive HARQ feedback information.
  • the first terminal may determine the resource occupied by the second terminal to send HARQ feedback information, or the second terminal may select the resource occupied by the HARQ feedback information by itself within the resource window indicated by the first terminal , Thereby achieving HARQ feedback in sidelink communication.
  • the terminal needs to determine the transmission data and HARQ feedback information by itself, the second The terminal cannot obtain the resource for sending HARQ feedback information from the network device, and needs to indicate the first resource or the first resource window for sending HARQ feedback information through the first terminal.
  • the indication information is used to instruct the second terminal to send the first resource of the HARQ feedback information, and it is assumed that other terminals also indicate the HARQ feedback resource through the SCI during the sidelink communication process
  • the first terminal Before sending the SCI to the second terminal, you can monitor the SCI sent by the other terminal, and determine the second resource occupied by the other terminal to send the HARQ feedback information according to the monitored SCI, and then determine the second terminal to send the HARQ feedback information according to the second resource First resource.
  • the first terminal may use a resource different from the second resource as the first resource, thereby avoiding the HARQ feedback information and other information sent by the second terminal
  • the HARQ feedback information sent by the terminal conflicts.
  • the other terminal is a terminal other than the first terminal, so the other terminal may include a second terminal.
  • the first terminal may listen to the SCI sent by the third terminal to the fourth terminal to instruct the fourth terminal to send HARQ feedback information resources; or, the first terminal may also listen to the SCI sent by the third terminal to the second terminal To instruct the second terminal to send HARQ feedback information resources to the third terminal; or, the first terminal may also listen to the SCI sent by the second terminal to the third terminal to instruct the third terminal to send HARQ feedback information resources.
  • the above implementation manner helps to avoid collision between the first resource occupied by the second terminal sending HARQ feedback information to the first terminal and the resource occupied by other terminals sending HARQ feedback information.
  • the resources occupied when sending HARQ feedback information are determined by the first terminal itself.
  • the first terminal can obtain the resources occupied by other terminals sending HARQ feedback information by monitoring the SCI sent by other terminals Therefore, it can be avoided that the first resource determined to send HARQ feedback information for the second terminal collides with the HARQ feedback information sent by other terminals.
  • the indication information when used to instruct the second terminal to send the first resource window of the HARQ feedback information, the indication information may include one or more of the following information: the size of the first resource window , The start position of the first resource window, and the end position of the first resource window.
  • the first resource window can be determined according to the starting position of the first resource window and the size of the first resource window, and the indication information can include the starting position of the first resource window and the size of the first resource window;
  • the first resource window can be determined according to the size of the first resource window and the end position of the first resource window, and the indication information may also include the size of the first resource window and the end position of the first resource window; or
  • the first resource window may also be determined according to the start position of the first resource window and the end position of the first resource window, and the indication information may include the start position of the first resource window and the end position of the first resource window.
  • the above-mentioned information may have been pre-appointed, for example, the first terminal has been notified to the second terminal in advance, or the network device may have notified the second terminal in advance, or may have been pre-appointed in the communication protocol.
  • the other information may be included in the instruction information. For example, if the size of the first resource window has been pre-agreed, the above indication information only includes the start position or end position of the first resource window.
  • the network device may send multiple first resource window candidate sizes to the first terminal, and the first terminal selects one of the multiple candidate sizes as the first resource window size.
  • the network device may send the candidate sizes of multiple first resource windows to the first terminal through radio resource control (RRC) signaling, and the first terminal may select one of the multiple window values; or the network device Directly configure one of the multiple window values to the first terminal as the size of the first resource window.
  • RRC radio resource control
  • the second terminal After determining the first resource window according to the instruction information, the second terminal selects one of the plurality of candidate first resources included in the first resource window as the first resource, and sends HARQ to the first terminal on the first resource Feedback.
  • the second terminal may consider the second resource that other terminals send HARQ feedback information, and avoid conflict between the selected first resource and the second resource.
  • the second terminal may monitor the energy value for the resource in the first resource window. If the energy value is higher than the preset threshold, it may be considered that other terminals send messages on the resource; otherwise, it may be considered that there are no other terminals Send a message on this resource. In order to avoid that the HARQ feedback information sent by the second terminal conflicts with messages sent by other terminals, the second terminal may select a resource whose energy value is not higher than a preset threshold as the first resource for sending HARQ feedback information.
  • the second terminal may monitor the energy value on the first candidate first resource in the first resource window, if the energy value on the first candidate first resource is not higher than a preset threshold, The first candidate first resource is used as the first resource for sending HARQ feedback information; otherwise, the second terminal continues to monitor the energy value on the second candidate first resource, and if it is not higher than the preset threshold, the The second candidate first resource is used as the first resource for sending HARQ feedback information; otherwise, the second terminal continues to monitor the next candidate first resource until the energy value monitored on the Nth candidate first resource is not higher than the Up to the threshold, the Nth candidate first resource is used as the first resource for sending HARQ feedback information, and N is an integer greater than or equal to 1.
  • the second terminal when the second terminal selects the first resource from the plurality of candidate first resources, it may also consider the third resource occupied by the second terminal sending a message to other terminals, and avoid selecting the first resource and the third resource. Three resources conflict.
  • the message sent by the second terminal to other terminals may be SCI, data, or HARQ feedback information, which is not limited in this embodiment of the present application.
  • the above feedback resource determination methods are all exemplified by unicast scenarios, but the method can also be applied to broadcast or multicast scenarios in sidelink communications, that is, the SCI sent by the first terminal can also be sent to other terminals and instruct other terminals Resources occupied by sending HARQ feedback information.
  • terminal 1 broadcasts SCI to terminal 2, terminal 3, and terminal 4.
  • the SCI instructs terminal 1 to send data to terminal 2, terminal 3, and terminal 4 on resource 1, and instructs terminal 2 to send HARQ feedback information on resource 2.
  • the feedback resource determination method in sidelink described above is particularly applicable in the mode 2 scenario.
  • the sidelink communication between the first terminal and the second terminal may be switched between mode 1 and mode 2
  • the first terminal and the second terminal may be within the coverage of the network device during a certain period of time, then the first terminal and the second terminal use mode 1 to perform Sidelink communication; at another moment, both the first terminal and the second terminal are outside the coverage of the network device, then the first terminal and the second terminal use mode 2 for sidelink communication.
  • the network device may determine the resources used by the first terminal to send data to the second terminal, and the resources used by the second terminal to send HARQ feedback information to the first terminal for the data Resources and send them to the first terminal and the second terminal respectively. Then, the first terminal and the second terminal respectively complete the transmission of data and HARQ feedback information on the corresponding resources according to the instructions of the network device.
  • the first terminal may determine the resource for sending data, and The second terminal sends the first resource or the first resource window used by the HARQ feedback information to the data, and sends an SCI to the second terminal to notify the second terminal of the determined resource.
  • the SCI sent by the first terminal to the second terminal may include indication information for instructing the second terminal to send HARQ feedback information.
  • One resource is that in the mode 1 scenario, the first resource is determined by the network device and sent to the first terminal, and notified by the first terminal to the second terminal; while in the mode 2 scenario, the first resource is determined by the first terminal itself Determine and notify the second terminal.
  • the first terminal if the first terminal does not receive the HARQ feedback information sent by the second terminal on the first resource, or the first terminal does not listen to the HARQ sent by the second terminal in the first resource window In response to the feedback information, the first terminal considers that the second terminal has not received the data sent by the first terminal, and determines that the data needs to be resent. In the process of resending data, the first terminal also sends the SCI first, which is used to indicate the resource for resending the data, and the first resource or the first resource window in which the second terminal sends HARQ feedback information for the data.
  • terminal 1 monitors the SCI sent by other terminals in the sidelink resource pool, and monitors the SCI-1 sent by terminal 3 and the SCI-2 sent by terminal 4, where the resources indicated by SCI-1 to send HARQ feedback information are Resource 1, the resource for sending HARQ feedback information indicated by SCI-2 is resource 2.
  • terminal 1 determines that data needs to be sent to terminal 2 and needs to configure terminal 2 with resources for sending HARQ feedback information, in order to avoid that resources occupied by terminal 2 sending HARQ feedback information conflict with resources for sending HARQ feedback information by other terminals, then
  • resource 3 is selected as the resource for terminal 2 to send HARQ feedback information, and the indication information of resource 3 is carried in the SCI sent to terminal 2.
  • the terminal 2 After receiving the SCI sent by the terminal 1, the terminal 2 sends HARQ feedback information to the terminal 1 on the resource 3 according to the data reception situation.
  • terminal 1 sends SCI to terminal 2 on resource 1, which instructs terminal 2 to receive data on resource 2 and sends HARQ feedback information in resource window 1.
  • the terminal 2 receives the data on the resource 2 according to the SCI, and then starts monitoring from the first resource in the resource window 1 to monitor whether the energy value is higher than a preset threshold. Since terminal 3 sends HARQ feedback information on the first resource in resource window 1, the monitoring result of terminal 2 on the first resource is higher than the preset threshold, then terminal 2 continues to monitor the second resource Energy value. Since no other terminal sends a message on this resource, the capability value monitored by terminal 2 on the second resource is not higher than the preset threshold, and terminal 2 sends HARQ feedback information to terminal 2 on the second resource.
  • terminal 1 cannot know in advance on which resource terminal 2 will send HARQ feedback information, so terminal 1 will monitor whether resource 2 has sent HARQ feedback information in resource window 1 to receive HARQ feedback information sent by terminal 2.
  • Terminal 1 listens on the first resource in the resource window 1, but does not listen to the HARQ feedback information sent by terminal 2, then it continues to monitor the second resource, and the HARQ feedback information sent by terminal 2 is heard on the second resource That is, terminal 1 receives the HARQ feedback information sent by terminal 2 on the second resource.
  • an embodiment of the present application further provides a method for determining the feedback resource in the sidelink. Referring to FIG. 8, the method may include the following steps:
  • Step 801 The first terminal monitors the SCI sent by the other terminal, and determines the first resource occupied by the data sent by the other terminal according to the monitored SCI.
  • Step 802 The first terminal determines a second resource for sending data to the second terminal according to the first resource.
  • the first terminal when determining the second resource, avoids the conflict between the second resource and the first resource, that is, the determined second resource has no intersection with the first resource that other terminals send data to.
  • Step 803 The first terminal sends data to the second terminal on the determined second resource.
  • Step 804 The second terminal determines the third resource according to the second resource and the mapping relationship between the second resource and the third resource, and sends HARQ feedback information for the above data to the first terminal on the third resource.
  • mapping relationship different second resources correspond to different third resources.
  • the first terminal receives the HARQ feedback information sent by the second terminal on the third resource. Specifically, the first terminal also needs to determine the third resource according to the second resource and the mapping relationship between the second resource and the third resource, and then receive HARQ feedback information on the third resource.
  • the embodiment of the present application does not limit the timing for the first terminal to determine the third resource. The first terminal may determine the third resource immediately after determining the second resource, or may determine the third resource after sending the data.
  • the first terminal avoids conflicts with the resources of other terminals to send data when determining the second resource for sending data, so it can avoid the resources of the second terminal sending HARQ feedback information from being sent by other terminals The resources of HARQ feedback information conflict.
  • a terminal may refer to a user equipment (user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal , Terminal, wireless communication equipment, user agent or user device.
  • Terminal devices can also be cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (wireless local loop (WLL) stations, personal digital processing (personal digital assistant, PDA), wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks or public land mobile communication networks (PLMN) in the future evolution
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • wireless communication Functional handheld devices computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks or public land mobile communication networks (PLMN) in the future evolution
  • PLMN public land mobile communication networks
  • the network device in the embodiment of the present application may be a base station, or other devices used to convert received air frames and internet protocol (IP) packets to each other, and serve as a router between the wireless terminal and the rest of the access network , Where the rest of the access network may include an IP network.
  • IP internet protocol
  • the network equipment can also be used to coordinate attribute management of the air interface.
  • the names of devices with base station functions may be different.
  • the base station in the LTE system is called an evolutionary base station (evolutional node B, eNB), NR system Base station (gNB), etc.
  • eNB evolved node B
  • gNB NR system Base station
  • the embodiments of the present application provide a terminal for implementing the functions performed by the first device in the foregoing method embodiments.
  • the terminal includes a sending unit 901 and a receiving unit 902, and may further include a determining unit 903 and a selecting unit 904.
  • the sending unit 901 is configured to send an SCI to a second terminal, where the SCI includes indication information used to instruct the second terminal to occupy the first resource or the first resource window occupied by the HARQ feedback information.
  • the first resource window includes multiple candidate first resources;
  • the receiving unit 902 is configured to receive the HARQ feedback information sent by the second terminal on the first resource, or monitor the HARQ feedback information sent by the second terminal in the first resource window.
  • the receiving unit 902 when the indication information is used to instruct the second terminal to send the first resource occupied by the HARQ feedback information, before the sending unit 901 sends the SCI to the second terminal, the receiving unit 902 further It is used for: the terminal monitors the SCI sent by other terminals; the terminal further includes a determination unit 903 for determining the second resource occupied by the HARQ feedback information sent by the other terminal according to the monitored SCI, the other terminal is in addition to the A terminal other than the first terminal; determining the first resource according to the second resource.
  • the indication information when used to instruct the second terminal to send a first resource window of HARQ feedback information, includes one or more of the following information: The size of the first resource window, the start position of the first resource window, and the end position of the first resource window.
  • the receiving unit 902 is further configured to: receive the first resource window sent by the network device The size of the first resource window or the candidate size of the plurality of first resource windows sent by the network device; the terminal further includes a selection unit 904 for selecting the first size from the candidate sizes of the plurality of first resource windows The size of the resource window.
  • the terminal and/or the second terminal are outside the coverage of the network device.
  • the embodiments of the present application provide a terminal for implementing the function performed by the second terminal in the method embodiment.
  • the terminal includes a receiving unit 1001 and a sending unit 1002, and may further include a determining unit 1003.
  • the receiving unit 1001 is configured to receive the SCI sent by the first terminal, where the SCI includes indication information used to instruct the second terminal to occupy the first resource or the first resource window occupied by the HARQ feedback information.
  • the first resource window includes multiple candidate first resources;
  • the sending unit 1002 is configured to send HARQ feedback information to the first terminal on the first resource, or send HARQ feedback information to the first terminal in the first resource window.
  • the indication information when used to instruct the second terminal to send a first resource window of HARQ feedback information, includes one or more of the following information: The size of the first resource window, the start position of the first resource window, and the end position of the first resource window.
  • the sending unit 1002 is specifically configured to: send HARQ feedback information to the first terminal on the first resource in the first resource window, and the receiving unit 1001 is on the first resource
  • the monitored energy value is not higher than the preset threshold.
  • the receiving unit 1001 is specifically configured to: monitor the energy value on the first candidate first resource in the first resource window, if the energy on the first candidate first resource If the value is not higher than the preset threshold, the first candidate first resource is used as the first resource; otherwise, the energy value is monitored on the second candidate first resource in the first resource window until The energy value monitored on the Nth candidate first resource is not higher than a preset threshold, and the Nth candidate first resource is used as the first resource, where N is an integer greater than or equal to 1.
  • the terminal further includes a determining unit 1003, configured to: determine a third resource occupied by the second terminal to send data to a third terminal; determine the first resource according to the third resource Resources.
  • the first terminal and/or the second terminal are outside the coverage of the network device.
  • each unit above is only a division of logical functions, and in actual implementation, it may be integrated into a physical entity in whole or in part, or may be physically separated. And these units can all be implemented in the form of software calling through processing elements; they can also be implemented in the form of hardware; some units can also be implemented through software invoking processing elements, and some units can be implemented in hardware.
  • the receiving unit and the sending unit can be integrated together or can be implemented independently.
  • the processing element described here may be an integrated circuit with signal processing capabilities.
  • each step of the above method or each of the above units may be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.
  • the above transmission unit is a unit that controls transmission, and can transmit information through a transmission device such as an antenna and a radio frequency device.
  • the receiving unit can also receive information through receiving devices, such as antennas and radio frequency devices.
  • the above units may be one or more integrated circuits configured to implement the above method, for example: one or more specific integrated circuits (application specific integrated circuits, ASIC), or, one or more microprocessors, or, one Or multiple field programmable gate arrays (field programmable gate array, FPGA), etc.
  • ASIC application specific integrated circuits
  • FPGA field programmable gate array
  • the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call a program.
  • CPU central processing unit
  • these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • the embodiments of the present application provide a terminal for implementing the function performed by the first terminal in the above method embodiments.
  • the terminal 1100 includes a processor 1101 and a communication interface 1102. Further, the terminal 1100 may further include a memory 1103.
  • the processor 1101 may be a general-purpose CPU, microprocessor, ASIC, or one or more integrated circuits for controlling the execution of the program programs of the present application.
  • Communication interface 1102 using any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, wireless access network (RAN), wireless local area networks (WLAN), etc. .
  • Ethernet wireless access network
  • WLAN wireless local area networks
  • the communication bus 1104 may include a path to transfer information between the above components.
  • the memory 1103 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types that can store information and instructions
  • the dynamic storage device can also be an electrically erasable programmable read-only memory (electrically erasable programmable-read-only memory, EEPROM) or can be used to carry or store the desired program code in the form of instructions or data structures and can be stored by the computer Any other media, but not limited to this.
  • the memory 1103 may exist independently, such as an off-chip memory, and is connected to the processor 1101 through the communication bus 1104.
  • the memory 1103 may also be integrated with the processor 1101.
  • the communication interface 1102 is responsible for communicating with other devices or communication networks, and the processor 1101 is used to implement other functions in the communication method provided by the foregoing embodiments of the present application.
  • the processor 1101 may include one or more CPUs.
  • the terminal may include multiple processors.
  • processors can be a single-core processor or a multi-core processor.
  • the processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).
  • the embodiments of the present application provide a terminal for implementing the function performed by the second terminal in the foregoing method embodiments.
  • the terminal 1200 includes a processor 1201 and a communication interface 1202. Further, the terminal 1200 may further include a memory 1203.
  • the processor 1201 may be a general-purpose CPU, microprocessor, ASIC, or one or more integrated circuits for controlling the execution of the program programs of the present application.
  • Communication interface 1202 using any device such as a transceiver, to communicate with other devices or communication networks, such as Ethernet, wireless access network (RAN), wireless local area network (WLAN), etc. .
  • RAN wireless access network
  • WLAN wireless local area network
  • the communication bus 1204 may include a path to transfer information between the above components.
  • the memory 1203 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (random access memory, RAM), or other types of information and instructions that can be stored
  • the dynamic storage device can also be an electrically erasable programmable read-only memory (electrically erasable programmable-read-only memory, EEPROM) or can be used to carry or store the desired program code in the form of instructions or data structures and can be stored by the computer Any other media, but not limited to this.
  • the memory 1203 may exist independently, such as an off-chip memory, and is connected to the processor 1201 through a communication bus 1204.
  • the memory 1203 may also be integrated with the processor 1201.
  • the communication interface 1202 is responsible for communicating with other devices or a communication network, and the processor 1201 is used to implement other functions in the communication method provided by the foregoing embodiments of the present application.
  • the processor 1201 may include one or more CPUs.
  • the terminal may include multiple processors.
  • processors can be a single-core processor or a multi-core processor.
  • the processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Moreover, the present application may take the form of a computer program product implemented on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • computer usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer readable memory that can guide a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, the instructions
  • the device implements the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and/or block diagrams.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operating steps are performed on the computer or other programmable device to generate computer-implemented processing, which is executed on the computer or other programmable device
  • the instructions provide steps for implementing the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and/or block diagrams.

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Abstract

本申请公开了一种旁链路中的反馈资源确定方法及设备。该方法中,第一终端向第二终端发送SCI,所述SCI中包括指示信息,所述指示信息用于指示所述第二终端发送混合自动重传请求HARQ反馈信息所占用的第一资源或者第一资源窗口,所述第一资源窗口包括多个候选第一资源;所述第一终端在所述第一资源上接收所述第二终端发送的HARQ反馈信息,或者,在所述第一资源窗口内监听所述第二终端发送的HARQ反馈信息。通过上述方法解决了sidelink通信中的接收端和发送端如何确定HARQ反馈资源的问题。

Description

一种旁链路中的反馈资源确定方法及设备 技术领域
本申请涉及无线通信技术领域,尤其涉及一种旁链路(sidelink)中的反馈资源确定方法及设备。
背景技术
车与外界的信息交换(vehicle to everything,V2X),是未来智能交通运输系统的关键技术。V2X的应用可以包括车与车(vehicle to vehicle,V2V)、车与路侧基础设施(vehicle to infrastructure,V2I)、车与行人(vehicle to pedestrian,V2P)以及车与应用服务器(vehicle to network,V2N)。V2X的应用能够改善驾驶安全性、减少拥堵和车辆能耗、提高交通效率和车载娱乐信息等。
在V2X的应用场景中,终端与终端之间进行通信的网络架构示意图可以如图1a和图1b所示,终端1和终端2可以通过sidelink进行通信。Sidelink中的资源分配有两种模式:模式一(mode 1)、由网络设备为终端确定sidelink通信中所使用的资源,例如,如图2a所示,终端1和终端2都位于基站的覆盖范围内,能够与基站及时通信,则可以由基站确定终端1和终端2进行通信时所使用的资源;模式二(mode 2)、由终端自行决定sidelink通信中所使用的资源,例如,如图2b所示,终端1(发送端)和终端2(接收端)当前均不在基站的覆盖范围内,不能与基站及时通信,则一般基站会预配置资源池给终端1及终端2,终端1自行确定向终端2发送数据时所使用的资源。
然而,在sidelink通信中如何进行混合自动重传请求(hybird automatic retransmission request,HARQ)反馈,还没有有效的解决方案。
发明内容
本申请提供一种旁链路中的反馈资源确定方法及设备,用以解决解决sidelink通信中的接收端和发送端如何确定HARQ反馈资源的问题。
第一方面,本申请提供了一种旁链路中的反馈资源确定方法,包括:
第一终端向第二终端发送旁链路控制信息SCI,所述SCI中包括指示信息,所述指示信息用于指示所述第二终端发送混合自动重传请求HARQ反馈信息所占用的第一资源或者第一资源窗口,所述第一资源窗口包括多个候选第一资源;
第二终端在第一资源上向第一终端发送HARQ反馈信息,或者,在第一资源窗口内向第一终端发送HARQ反馈信息;相应的,第一终端在第一资源上接收第二终端发送的HARQ反馈信息,或者在第一资源窗口内监听第二终端发送的HARQ反馈信息。
在上述方法实施例中,可以由第一终端确定第二终端发送HARQ反馈信息所占用的资源,也可以由第二终端在第一终端指示的资源窗口内自行选择发送HARQ反馈信息所占用的资源,从而实现了sidelink通信中的HARQ反馈。
在一种可能的实现方式中,当所述指示信息用于指示所述第二终端发送HARQ反馈信息所占用的第一资源时,在所述第一终端向第二终端发送SCI之前,所述方法还包括:所述第一终端监测其他终端发送的SCI;所述第一终端根据所述监测到的SCI确定其他终端发送HARQ反馈信息所占用的第二资源,所述其他终端为除所述第一终端之外的终端;所述第一终端根据所述第二资源确定所述第一资源。
上述实现方式,有助于避免第二终端向第一终端发送HARQ反馈信息所占用的第一资源与其他HARQ 反馈信息所占用的资源发生碰撞。
在一种可能的实现方式中,当所述指示信息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,所述指示信息包括以下信息中的一种或多种:所述第一资源窗口的大小,所述第一资源窗口的起始位置,所述第一资源窗口的结束位置。
在一种可能的实现方式中,当第一消息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,所述方法还包括:所述第一终端接收网络设备发送的所述第一资源窗口的大小;或者,所述第一终端接收网络设备发送的多个所述第一资源窗口的候选大小,所述第一终端从所述多个第一资源窗口的候选大小中选择出所述第一资源窗口的大小。
在一种可能的实现方式中,第二终端在第一资源窗口内向所述第二终端发送HARQ反馈信息,包括:第二终端在所述第一资源窗口中的第一资源上向所述第一终端发送HARQ反馈信息,且第二终端在所述第一资源上监测到的能量值不高于预设阈值。在该方式中,第二终端在从第一资源窗口中选择第一资源时,选择能量值不高于预设阈值的资源作为第一资源,而能量值不高于预设阈值可认为该资源上没有其他终端发送消息,从而避免了第二终端发送的HARQ反馈信息与其他终端发送的消息产生冲突。
在一种可能的实现方式中,第二终端在第一资源窗口中的第一资源上向所述第一终端发送HARQ反馈信息,且第二终端在第一资源上监测到的能量值不高于预设阈值,包括:
所述第二终端在所述第一资源窗口中的第一个候选第一资源上监测能量值,若所述第一个候选第一资源上的能量值不高于预设阈值,则将所述第一个候选第一资源作为所述第一资源;否则,在所述第一资源窗口中的第二个候选第一资源上监测能量值,直至在第N个候选第一资源上监测到的能量值不高于预设阈值,将所述第N个候选第一资源作为所述第一资源,其中,N为大于等于1的整数;所述第二终端在所述第一资源上向所述第一终端发送HARQ反馈信息。
在一种可能的实现方式中,第二终端还可以确定该第二终端向第三终端发送数据所占用的第三资源,第二终端根据所述第三资源确定所述第一资源,从而避免第二终端向第一终端发送的HARQ反馈信息与该第二终端向第三终端发送的消息冲突。
在一种可能的实现方式中,所述第一终端和/或所述第二终端在网络设备的覆盖范围之外。
第二方面,本申请提供了一种旁链路中的反馈资源确定方法,包括:
第一终端监测其他终端发送的SCI,根据所述监测到的SCI确定所述其他终端发送数据所占用的第一资源;所述第一终端在第二资源上向第二终端发送数据,所述第二资源是根据第一资源确定的;相应地,所述第二终端在所述第二资源上接收数据;所述第二终端在第三资源上向所述第一终端发送HARQ反馈信息,所述第三资源是根据第二资源与第三资源之间的映射关系确定的;相应地,所述第一终端在第三资源上接收所述第二终端发送的HARQ反馈信息。
第三方面,本申请实施例提供一种旁链路中的反馈资源确定方法,包括:
第一终端监测其他终端发送的第一消息,所述第一消息中包括用于指示其他终端发送第二消息所占用的第一资源;所述第一终端在第二资源上向第二终端发送第三消息;相应地,所述第二终端在所述第二资源上接收第三消息;第二终端在第三资源上向所述第一终端发送第四消息,所述第三资源是根据第二资源与第三资源之间的映射关系确定的;相应地,所述第一终端在第三资源上接收所述第二终端发送的第四消息。
第四方面,本申请实施例提供了一种终端,该终端包括:
发送单元,用于向第二终端发送SCI,所述SCI中包括指示信息,所述指示信息用于指示所述第二终端发送HARQ反馈信息所占用的第一资源或者第一资源窗口,所述第一资源窗口包括多个候选第一资 源;
接收单元,用于在所述第一资源上接收所述第二终端发送的HARQ反馈信息,或者,在所述第一资源窗口内监听所述第二终端发送的HARQ反馈信息。
在一种可能的实现方式中,当所述指示信息用于指示所述第二终端发送HARQ反馈信息所占用的第一资源时,在发送单元向第二终端发送SCI之前,接收单元还用于:端监测其他终端发送的SCI;该终端还包括确定单元,用于根据所述监测到的SCI确定其他终端发送HARQ反馈信息所占用的第二资源,所述其他终端为除所述第一终端之外的终端;根据所述第二资源确定所述第一资源。
在一种可能的实现方式中,当所述指示信息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,所述指示信息包括以下信息中的一种或多种:所述第一资源窗口的大小,所述第一资源窗口的起始位置,所述第一资源窗口的结束位置。
在一种可能的实现方式中,当第一消息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,接收单元还用于:接收网络设备发送的所述第一资源窗口的大小,或者接收网络设备发送的多个所述第一资源窗口的候选大小;该终端还包括选择单元,用于从所述多个第一资源窗口的候选大小中选择出所述第一资源窗口的大小。
在一种可能的实现方式中,所述终端和/或所述第二终端在网络设备的覆盖范围之外。
第五方面,本申请实施例提供一种终端,该终端包括:
接收单元,用于接收第一终端发送的旁链路控制信息SCI,所述SCI包括指示信息,所述指示信息用于指示所述第二终端发送混合自动重传请求HARQ反馈信息所占用的第一资源或第一资源窗口,所述第一资源窗口包括多个候选第一资源;
发送单元,用于在所述第一资源上向所述第一终端发送HARQ反馈信息,或者,在所述第一资源窗口内向所述第一终端发送HARQ反馈信息。
在一种可能的实现方式中,当所述指示信息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,所述指示信息包括以下信息中的一种或多种:所述第一资源窗口的大小,所述第一资源窗口的起始位置,所述第一资源窗口的结束位置。
在一种可能的实现方式中,发送单元具体用于:在所述第一资源窗口中的第一资源上向所述第一终端发送HARQ反馈信息,且接收单元在所述第一资源上监测到的能量值不高于预设阈值。
在一种可能的实现方式中,接收单元具体用于:在所述第一资源窗口中的第一个候选第一资源上监测能量值,若所述第一个候选第一资源上的能量值不高于预设阈值,则将所述第一个候选第一资源作为所述第一资源;否则,在所述第一资源窗口中的第二个候选第一资源上监测能量值,直至在第N个候选第一资源上监测到的能量值不高于预设阈值,将所述第N个候选第一资源作为所述第一资源,其中,N为大于等于1的整数。
在一种可能的实现方式中,该终端还包括确定单元,用于:确定所述第二终端向第三终端发送数据所占用的第三资源;根据所述第三资源确定所述第一资源。
在一种可能的实现方式中,所述第一终端和/或所述第二终端在网络设备的覆盖范围之外。
第六方面,本申请实施例提供一种终端,处理器和通信接口,所述处理器与存储器和所述通信接口耦合;
所述通信接口用于与其他设备进行通信;
所述处理器用于运行所述存储器内的指令或程序,执行以下步骤:
通过所述通信接口向第二终端发送旁链路控制信息SCI,所述SCI中包括指示信息,所述指示信息 用于指示所述第二终端发送混合自动重传请求HARQ反馈信息所占用的第一资源或者第一资源窗口,所述第一资源窗口包括多个候选第一资源;
通过所述通信接口在所述第一资源上接收所述第二终端发送的HARQ反馈信息,或者,在所述第一资源窗口内监听所述第二终端发送的HARQ反馈信息。
在一种可能的实现方式中,当所述指示信息用于指示所述第二终端发送HARQ反馈信息所占用的第一资源时,所述处理器还用于:在通过所述通信接口向第二终端发送SCI之前,通过所述通信接口监测其他终端发送的SCI;根据所述监测到的SCI确定其他终端发送HARQ反馈信息所占用的第二资源,所述其他终端为除所述第一终端之外的终端;根据所述第二资源确定所述第一资源。
在一种可能的实现方式中,当所述指示信息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,所述指示信息包括以下信息中的一种或多种:所述第一资源窗口的大小,所述第一资源窗口的起始位置,所述第一资源窗口的结束位置。
在一种可能的实现方式中,当第一消息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,所述处理器还用于:通过所述通信接口接收网络设备发送的所述第一资源窗口的大小;或者,通过所述通信接口接收网络设备发送的多个所述第一资源窗口的候选大小,所述第一终端从所述多个第一资源窗口的候选大小中选择出所述第一资源窗口的大小。
在一种可能的实现方式中,所述第一终端和/或所述第二终端在网络设备的覆盖范围之外。
第七方面,本申请实施例提供一种终端,包括:处理器和通信接口,所述处理器与存储器和所述通信接口耦合;所述通信接口用于与其他设备进行通信;
所述处理器用于运行所述存储器内的指令或程序,执行以下步骤:
通过所述通信接口接收第一终端发送的旁链路控制信息SCI,所述SCI包括指示信息,所述指示信息用于指示所述第二终端发送混合自动重传请求HARQ反馈信息所占用的第一资源或第一资源窗口,所述第一资源窗口包括多个候选第一资源;
通过所述通信接口在所述第一资源上向所述第一终端发送HARQ反馈信息,或者,在所述第一资源窗口内向所述第一终端发送HARQ反馈信息。
在一种可能的实现方式中,当所述指示信息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,所述指示信息包括以下信息中的一种或多种:所述第一资源窗口的大小,所述第一资源窗口的起始位置,所述第一资源窗口的结束位置。
在一种可能的实现方式中,所述处理器具体用于:通过所述通信接口在所述第一资源窗口中的第一资源上向所述第一终端发送HARQ反馈信息,且通过所述通信接口在所述第一资源上监测到的能量值不高于预设阈值。
在一种可能的实现方式中,所述处理器具体用于:通过所述通信接口在所述第一资源窗口中的第一个候选第一资源上监测能量值,若所述第一个候选第一资源上的能量值不高于预设阈值,则将所述第一个候选第一资源作为所述第一资源;否则,在所述第一资源窗口中的第二个候选第一资源上监测能量值,直至在第N个候选第一资源上监测到的能量值不高于预设阈值,将所述第N个候选第一资源作为所述第一资源,其中,N为大于等于1的整数;通过所述通信接口在所述第一资源上向所述第一终端发送HARQ反馈信息。
在一种可能的实现方式中,所述处理器还用于:确定所述第二终端向第三终端发送数据所占用的第三资源;根据所述第三资源确定所述第一资源。
在一种可能的实现方式中,所述第一终端和/或所述第二终端在网络设备的覆盖范围之外。
所述终端可以为芯片,所述存储器可以为片内存储器,也可以为片外存储器。
第八方面,本申请实施例提供了一种计算机可读存储介质,该计算机可读存储介质存储有计算机指令,当所述指令在计算机上运行时,使得计算机执行如第一方面至第三方面中任一方法中第一终端所执行的功能,或者使得计算机执行如第一方面至第三方面中任一方法中第二终端所执行的功能。
第九方面,本申请实施例提供了一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行如第一方面至第三方面中任一方法中第一终端所执行的功能,或者使得计算机执行如第一方面至第三方面中任一方法中第二终端所执行的功能。
第十方面,本申请提供一种芯片,所述芯片与存储器相连,用于读取并执行所述存储器中存储的软件程序,以实现上述第一方面至第三方面中任一方法中第一终端所执行的功能,或者实现如第一方面至第三方面中任一方法中第二终端所执行的功能。
附图说明
图1a和图1b为本申请实施例提供的sidelink通信示意图;
图2a为本申请实施例提供的mode 1场景示意图;
图2b为本申请实施例提供的mode 2场景示意图;
图3为本申请实施例提供的sidelink中的反馈资源确定方法流程示意图;
图4为本申请实施例提供的SCI指示第一资源的示意图之一;
图5为本申请实施例提供的SCI指示第一资源窗口的示意图之一;
图6为本申请实施例提供的SCI指示第一资源的示意图之二;
图7为本申请实施例提供的SCI指示第一资源窗口的示意图之二;
图8为本申请实施例提供的另一种sidelink中的反馈资源确定方法流程示意图;
图9为本身很强实施例提供的一种终端结构示意图之一;
图10为本身很强实施例提供的一种终端结构示意图之二;
图11为本身很强实施例提供的一种终端结构示意图之三;
图12为本身很强实施例提供的一种终端结构示意图之四。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚,下面将结合附图对本申请作进一步地详细描述。
目前,在第三代合作伙伴计划(3rd generation partnership project,3GPP)会议讨论中,已经确定sidelink通信中的单播和组播场景下都可以支持HARQ反馈。具体地,HARQ反馈技术,即接收方在解码失败的情况下,保存接收到的数据,并要求发送方重传数据,接收方将重传的数据和先前接收到的数据进行合并后再解码。例如,发送终端可以在sidelink资源上向接收终端发送数据,接收终端通过sidelink中的物理旁链路反馈信道(physical sidelink feedback channel,PSFCH)向发送终端发送HARQ反馈信息,以指示该接收终端是否正确接收了数据,若该HARQ反馈信息指示接收终端没有正确接收数据,则发送终端重新发送数据。
然而,如何确定接收数据的终端发送HARQ反馈信息所使用的资源,目前还没有明确的解决方案。
为了解决上述问题,本申请实施例提供了一种sidelink中的反馈资源确定方法,用于实现sidelink通信中的接收端和发送端确定HARQ反馈信息资源。
参见图3,为本申请实施例提供的sidelink中的反馈资源确定方法的流程示意图,如图所述,该方法可以包括以下步骤:
步骤301、第一终端向第二终端发送旁链路控制信息(sidelink control information,SCI),该SCI中包括指示信息,用于指示第二终端发送HARQ反馈信息所占用的第一资源或第一资源窗口。其中,第一资源窗口包括多个候选第一资源。
例如,如图4所示,上述指示信息可以用于指示第二终端发送HARQ反馈信息所占用的时频资源。
又例如,上述指示信息可以指示第二终端在图5所示的第一资源窗口中发送HARQ反馈信息,则第二终端在该第一资源窗口包含的多个候选第一资源中选择出第一资源并发送HARQ反馈信息。
步骤302a、若上述指示信息指示的为第一资源,则第二终端在第一资源上向第一终端发送HARQ反馈信息;另一方面,第一终端在第一资源上接收HARQ反馈信息。
步骤302b、若上述指示信息指示的为第一资源窗口,则第二终端在第一资源窗口内选择第一资源向第一终端发送HARQ反馈信息;另一方面,由于第一终端不确定第二终端在第一资源窗口内的哪个资源上发送HARQ反馈信息,故第一终端在第一资源窗口内监听第二终端是否发送了HARQ反馈信息,若监听到第二终端发送的HARQ反馈信息,即为接收到HARQ反馈信息。
在上述方法实施例中,可以由第一终端确定第二终端发送HARQ反馈信息所占用的资源,也可以由第二终端在第一终端指示的资源窗口内自行选择发送HARQ反馈信息所占用的资源,从而实现了sidelink通信中的HARQ反馈。
尤其是在mode 2的场景中,例如,由于通信的两个终端中至少一个终端在基站的覆盖范围之外,或者由于其他原因导致终端需要自行确定传输数据以及HARQ反馈信息的情况下,第二终端无法从网络设备处获取到发送HARQ反馈信息的资源,需要通过第一终端指示发送HARQ反馈信息的第一资源或第一资源窗口。
在一种可能的实现方式中,当指示信息用于指示第二终端发送HARQ反馈信息的第一资源时,并假设其他终端在sidelink通信过程中也通过SCI指示HARQ反馈资源,则第一终端在向第二终端发送SCI之前,可以监听其他终端发送的SCI,并根据监听到的SCI确定其他终端发送HARQ反馈信息所占用的第二资源,然后根据第二资源确定出第二终端发送HARQ反馈信息的第一资源。
具体地,第一终端在获取到其他终端发送HARQ反馈信息所占用的第二资源后,可以将与第二资源不同的资源作为第一资源,从而实现避免第二终端发送的HARQ反馈信息与其他终端发送的HARQ反馈信息相冲突。
其中,上述其他终端为除第一终端之外的终端,故,上述其他终端可以包括第二终端。例如,第一终端可能监听到第三终端向第四终端发送的SCI,以指示第四终端发送HARQ反馈信息的资源;或者,第一终端也可能监听到第三终端向第二终端发送的SCI,以指示第二终端向第三终端发送HARQ反馈信息的资源;或者,第一终端还可能监听到第二终端向第三终端发送的SCI,以指示第三终端发送HARQ反馈信息的资源。
上述实现方式,有助于避免第二终端向第一终端发送HARQ反馈信息所占用的第一资源与其他终端发送HARQ反馈信息所占用的资源发生碰撞。尤其是在mode 2的情况下,发送HARQ反馈信息时所占用的资源是由第一终端自行确定的,第一终端可以通过监听其他终端发送的SCI获取到其他终端发送HARQ反馈信息所占用的资源,从而能够实现避免为第二终端确定发送HARQ反馈信息的第一资源与其他终端发送HARQ反馈信息发生碰撞。
在一种可能的实现方式中,当指示信息用于指示第二终端发送HARQ反馈信息的第一资源窗口时,上述指示信息可以包括以下信息中的一种或多种:第一资源窗口的大小,第一资源窗口的起始位置,第一资源窗口的结束位置。
例如,根据第一资源窗口的起始位置和第一资源窗口的大小,即可确定出第一资源窗口,则指示信息中可以包括第一资源窗口的起始位置和第一资源窗口的大小;或者,根据第一资源窗口的大小和第一资源窗口的结束位置,即可确定出第一资源窗口,则指示信息中也可以包括第一资源窗口的大小和第一资源窗口的结束位置;或者,根据第一资源窗口的起始位置和第一资源窗口的结束位置也可以确定出第一资源窗口,则指示信息中可以包括第一资源窗口的起始位置和第一资源窗口的结束位置。
又例如,上述一种信息可能已预先约定,如第一终端已预先通知给第二终端,或者网络设备可能已预先通知第二终端,或者也可能在通信协议中已预先约定。此时,上述指示信息中包括另一种信息即可。举例说明,第一资源窗口的大小已预先约定,则上述指示信息中仅包括第一资源窗口的起始位置或结束位置即可。
在一些实施例中,网络设备可以向第一终端发送多个第一资源窗口的候选大小,由第一终端从上述多个候选大小中选择一个作为第一资源窗口的大小。例如,网络设备可以通过无线资源控制(radio resource control,RRC)信令将多个第一资源窗口的候选大小发送给第一终端,第一终端再从多个窗口值选择其中一个;或者网络设备直接配置多个窗口值中的一个给第一终端,作为上述第一资源窗口的大小。
第二终端在根据上述指示信息确定出第一资源窗口后,从第一资源窗口包括的多个候选第一资源中选择一个作为第一资源,并在该第一资源上向第一终端发送HARQ反馈信息。
可选地,第二终端在从多个候选第一资源中选择第一资源时,可以考虑其他终端发送HARQ反馈信息的第二资源,并避免选择的第一资源与第二资源相冲突。
在一些实施例中,第二终端可以针对第一资源窗口中的资源监测能量值,若能量值高于预设阈值,则可认为其他终端在该资源上发送消息;否则,可认为没有其他终端在该资源上发送消息。为了避免第二终端发送的HARQ反馈信息与其他终端发送的消息相冲突,第二终端可以选择能量值不高于预设阈值的资源作为发送HARQ反馈信息的第一资源。
在一个具体实施例中,第二终端可以在第一资源窗口中的第一个候选第一资源上监测能量值,若该第一个候选第一资源上的能量值不高于预设阈值,则将该第一个候选第一资源作为发送HARQ反馈信息的第一资源;否则,第二终端继续监测第二个候选第一资源上的能量值,若不高于预设阈值,则将该第二个候选第一资源作为发送HARQ反馈信息的第一资源;否则,第二终端继续监测下一个候选第一资源,直至在第N个候选第一资源上监测到的能量值不高于预设阈值为止,并将该第N个候选第一资源作为发送HARQ反馈信息的第一资源,N为大于等于1的整数。
可选地,第二终端在从多个候选第一资源中选择第一资源时,还可以考虑该第二终端向其他终端发送消息所占用的第三资源,并避免选择的第一资源与第三资源相冲突。其中,第二终端向其他终端发送的消息可以为SCI,也可以为数据,还可以为HARQ反馈信息,本申请实施例对此不作限制。
上述反馈资源确定方法均以单播场景进行举例,但该方法也可以应用于sidelink通信中的广播或者多播场景,即,上述第一终端发送的SCI还可以发送给其他终端,并指示其他终端发送HARQ反馈信息所占用的资源。例如,终端1向终端2、终端3、终端4广播SCI,该SCI指示终端1在资源1上向终端2、终端3、终端4发送数据,并指示终端2在资源2上发送HARQ反馈信息,指示终端3在资源3上发送HARQ反馈信息,指示终端4在资源4上发送HARQ反馈信息。
如前所述,上述sidelink中的反馈资源确定方法尤其适用在mode 2场景中,然而,在一些场景,第一终端和第二终端之间的sidelink通信可能会在mode 1和mode 2之间切换,例如,由于第一终端和第二终端的移动,可能使得在某一时段,第一终端和第二终端均处于网络设备的覆盖范围之内,则第 一终端和第二终端采用mode 1进行sidelink通信;在另一时刻,第一终端和第二终端均处于网络设备的覆盖范围之外,则第一终端和第二终端则采用mode 2进行sidelink通信。
在一种可能的设计中,在mode 1场景中,网络设备可以确定第一终端向第二终端发送数据所使用的资源,以及第二终端针对该数据向第一终端发送HARQ反馈信息所使用的资源,并分别发送给第一终端和第二终端。则第一终端和第二终端根据网络设备的指示,分别在相应的资源上完成数据以及HARQ反馈信息的传输。当第一终端和第二终端之间的sidelink通信切换至mode 2场景时,由于网络设备无法为第一终端和第二终端确定sidelink通信资源,则可以由第一终端确定发送数据的资源,以及第二终端针对该数据发送HARQ反馈信息所使用的第一资源或第一资源窗口,并向第二终端发送SCI,将确定出的资源通知给第二终端。
在另一种可能的设计中,不论在mode 1场景中还是在mode 2场景中,第一终端向第二终端发送的SCI均可以包含指示信息,用于指示第二终端发送HARQ反馈信息的第一资源。不同的是,在mode 1场景中,第一资源由网络设备确定并发送给第一终端,并由第一终端通知给第二终端;而在mode 2场景中,第一资源由第一终端自行确定并通知给第二终端。
在一种可能的实现方式中,第一终端若在第一资源上没有接收到第二终端发送的HARQ反馈信息,或者,第一终端在第一资源窗口内没有监听到第二终端发送的HARQ反馈信息,则第一终端认为第二终端没有接收到第一终端发送的数据,确定需要重新发送数据。重新发送数据过程中,第一终端同样先发送SCI,该SCI用于指示重新发送数据的资源,以及第二终端针对上述数据发送HARQ反馈信息的第一资源或第一资源窗口。
为了更加清楚的理解本申请上述实施例,下面结合图6和图7进行举例说明。
参见图6,终端1在sidelink资源池中监听其他终端发送的SCI,监听到了终端3发送的SCI-1和终端4发送的SCI-2,其中,SCI-1指示的发送HARQ反馈信息的资源为资源1,SCI-2指示的发送HARQ反馈信息的资源为资源2。终端1确定需要向终端2发送数据,并需要为终端2配置发送HARQ反馈信息的资源时,为了避免终端2发送HARQ反馈信息所占用的资源与其他终端发送HARQ反馈信息的资源相冲突,则在除资源1和资源2之外在资源中选择了资源3作为终端2发送HARQ反馈信息的资源,并在向终端2发送的SCI中携带资源3的指示信息。
终端2在接收到终端1发送的SCI后,根据数据接收的情况,在资源3上向终端1发送HARQ反馈信息。
参见图7,终端1在资源1上向终端2发送SCI,该SCI指示终端2在资源2上接收数据,并在资源窗口1中发送HARQ反馈信息。终端2根据SCI在资源2上接收数据,然后在资源窗口1中从第一个资源上开始监测,监测能量值是否高于预设阈值。由于终端3在资源窗口1中的第一个资源上发送了HARQ反馈信息,因此终端2在第一个资源上的监测结果为高于预设阈值,则终端2继续监测第二个资源上的能量值。由于没有其他终端在该资源上发送消息,因此终端2在第二个资源上监测到的能力值不高于预设阈值,则终端2在第二个资源上向终端2发送HARQ反馈信息。
而终端1不能预先知道终端2将在哪个资源上发送HARQ反馈信息,故终端1将在资源窗口1中监听终端2是否发送了HARQ反馈信息,以接收到终端2发送的HARQ反馈信息。终端1在资源窗口1中的第一个资源上监听,没有监听到终端2发送的HARQ反馈信息,则继续监听第二个资源,并在第二个资源上监听到了终端2发送的HARQ反馈信息,即,终端1在第二个资源上接收到了终端2发送的HARQ反馈信息。
为了实现sidelink通信中的接收端和发送端确定HARQ反馈信息资源,本申请实施例还提供了一种sidelink中的反馈资源确定方法。参见图8,该方法可以包括以下步骤:
步骤801、第一终端监听其他终端发送的SCI,并根据监听到的SCI确定其他终端发送数据所占用的第一资源。
步骤802、第一终端根据第一资源确定向第二终端发送数据的第二资源。
具体地,第一终端在确定第二资源时,避免第二资源与第一资源相冲突,即,确定出的第二资源与其他终端发送数据的第一资源无交集。
步骤803、第一终端在确定出的第二资源上向第二终端发送数据。
步骤804、第二终端根据第二资源,以及第二资源与第三资源的映射关系,确定第三资源,并在第三资源上向第一终端发送针对上述数据的HARQ反馈信息。
其中,根据上述映射关系,不同的第二资源对应不同的第三资源。
相应的,第一终端在第三资源上接收第二终端发送的HARQ反馈信息。具体的,第一终端也需要根据第二资源以及第二资源与第三资源之间的映射关系,确定出第三资源,然后在第三资源上接收HARQ反馈信息。但本申请实施例对第一终端确定第三资源的时机不做限定,第一终端可以在确定出第二资源后立即确定第三资源,也可以在发送了数据后再确定第三资源。
在本申请上述实施例中,由于第一终端发送数据的第二资源与第二终端发送HARQ反馈信息的第三资源之间存在映射关系,若第一终端发送数据的第二资源与其他终端发送数据的资源不同,则第二终端发送HARQ反馈信息的资源与其他终端发送HARQ反馈信息的资源也不相同。而第一终端通过监听其他终端发送的SCI,在确定发送数据的第二资源时,避免了与其他终端发送数据的资源相冲突,因此能够避免第二终端发送HARQ反馈信息的资源与其他终端发送HARQ反馈信息的资源相冲突。
在本申请提供的上述两种方法中,终端可以指用户设备(user equipment,UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol,SIP)电话、无线本地环路(wireless local loop,WLL)站、个人数字处理(personal digital assistant,PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备,未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network,PLMN)中的终端设备等,本申请实施例对此并不限定。
本申请实施例中的网络设备可以为基站,或其他用于将收到的空中帧与网际协议(internet protocol,IP)分组进行相互转换,作为无线终端与接入网的其余部分之间的路由器,其中接入网的其余部分可包括IP网络。网络设备还可用于协调对空中接口的属性管理。其中,在采用不同无线接入技术的通信系统中,具备基站功能的设备的名称可能会有所不同,例如,LTE系统中的基站称之为演进型基站(evolutional node B,eNB)、NR系统中的基站(gNB)等。本申请实施例对此不进行不限定。
基于相同的技术构思,本申请实施例提供了一种终端,用于实现上述方法实施例中第一设备所执行的功能。如图9所示,该终端包括发送单元901和接收单元902,进一步还可以包括确定单元903和选择单元904。
发送单元901,用于向第二终端发送SCI,所述SCI中包括指示信息,所述指示信息用于指示所述第二终端发送HARQ反馈信息所占用的第一资源或者第一资源窗口,所述第一资源窗口包括多个候选第一资源;
接收单元902,用于在所述第一资源上接收所述第二终端发送的HARQ反馈信息,或者,在所述第一资源窗口内监听所述第二终端发送的HARQ反馈信息。
在一种可能的实现方式中,当所述指示信息用于指示所述第二终端发送HARQ反馈信息所占用的第一资源时,在发送单元901向第二终端发送SCI之前,接收单元902还用于:端监测其他终端发送的SCI;该终端还包括确定单元903,用于根据所述监测到的SCI确定其他终端发送HARQ反馈信息所占用的第二资源,所述其他终端为除所述第一终端之外的终端;根据所述第二资源确定所述第一资源。
在一种可能的实现方式中,当所述指示信息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,所述指示信息包括以下信息中的一种或多种:所述第一资源窗口的大小,所述第一资源窗口的起始位置,所述第一资源窗口的结束位置。
在一种可能的实现方式中,当第一消息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,接收单元902还用于:接收网络设备发送的所述第一资源窗口的大小,或者接收网络设备发送的多个所述第一资源窗口的候选大小;该终端还包括选择单元904,用于从所述多个第一资源窗口的候选大小中选择出所述第一资源窗口的大小。
在一种可能的实现方式中,所述终端和/或所述第二终端在网络设备的覆盖范围之外。
基于相同的技术构思,本申请实施例提供了一种终端,用于实现方式方法实施例中第二终端所执行的功能。如图10所示,该终端包括接收单元1001和发送单元1002,进一步还可以包括确定单元1003。
接收单元1001,用于接收第一终端发送的SCI,所述SCI包括指示信息,所述指示信息用于指示所述第二终端发送HARQ反馈信息所占用的第一资源或第一资源窗口,所述第一资源窗口包括多个候选第一资源;
发送单元1002,用于在所述第一资源上向所述第一终端发送HARQ反馈信息,或者,在所述第一资源窗口内向所述第一终端发送HARQ反馈信息。
在一种可能的实现方式中,当所述指示信息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,所述指示信息包括以下信息中的一种或多种:所述第一资源窗口的大小,所述第一资源窗口的起始位置,所述第一资源窗口的结束位置。
在一种可能的实现方式中,发送单元1002具体用于:在所述第一资源窗口中的第一资源上向所述第一终端发送HARQ反馈信息,且接收单元1001在所述第一资源上监测到的能量值不高于预设阈值。
在一种可能的实现方式中,接收单元1001具体用于:在所述第一资源窗口中的第一个候选第一资源上监测能量值,若所述第一个候选第一资源上的能量值不高于预设阈值,则将所述第一个候选第一资源作为所述第一资源;否则,在所述第一资源窗口中的第二个候选第一资源上监测能量值,直至在第N个候选第一资源上监测到的能量值不高于预设阈值,将所述第N个候选第一资源作为所述第一资源,其中,N为大于等于1的整数。
在一种可能的实现方式中,该终端还包括确定单元1003,用于:确定所述第二终端向第三终端发送数据所占用的第三资源;根据所述第三资源确定所述第一资源。
在一种可能的实现方式中,所述第一终端和/或所述第二终端在网络设备的覆盖范围之外。
需要说明的是,以上各个单元的划分仅仅是一种逻辑功能的划分,实际实现时可以全部或部分集成到一个物理实体上,也可以物理上分开。且这些单元可以全部以软件通过处理元件调用的形式实现;也可以全部以硬件的形式实现;还可以部分单元通过软件通过处理元件调用的形式实现,部分单元通过硬件的形式实现。例如,接收单元与发送单元可以集成在一起,也可以独立实现。这里所述的处理元件可 以是一种集成电路,具有信号的处理能力。在实现过程中,上述方法的各步骤或以上各个单元可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。此外,以上发送单元是一种控制发送的单元,可以通过发送装置,例如天线和射频装置发送信息。同理,接收单元也可以通过接收装置,例如天线和射频装置接收信息。
以上这些单元可以是被配置成实施以上方法的一个或多个集成电路,例如:一个或多个特定集成电路(application specific integrated circuit,ASIC),或,一个或多个微处理器,或,一个或者多个现场可编程门阵列(field programmable gate array,FPGA)等。再如,当以上某个单元通过处理元件调度程序的形式实现时,该处理元件可以是通用处理器,例如中央处理器(central processing unit,CPU)或其它可以调用程序的处理器。再如,这些单元可以集成在一起,以片上系统(system-on-a-chip,SOC)的形式实现。
基于相同的技术构思,本申请实施例提供了一种终端,用于实现上述方法实施例中第一终端所执行的功能。如图11所示,该终端1100包括处理器1101和通信接口1102,进一步地,终端1100还可以包括存储器1103。
具体地,处理器1101可以是一个通用CPU,微处理器,ASIC,或一个或多个用于控制本申请方案程序执行的集成电路。
通信接口1102,使用任何收发器一类的装置,用于与其他设备或通信网络通信,如以太网,无线接入网(radio access network,RAN),无线局域网(wireless local area networks,WLAN)等。
通信总线1104可包括一通路,在上述组件之间传送信息。
存储器1103可以是只读存储器(read-only memory,ROM)或可存储静态信息和指令的其他类型的静态存储设备,随机存取存储器(random access memory,RAM)或者可存储信息和指令的其他类型的动态存储设备,也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory,EEPROM)或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质,但不限于此。存储器1103可以是独立存在,例如片外存储器,通过通信总线1104与处理器1101相连接。存储器1103也可以和处理器1101集成在一起。
通信接口1102负责与其他设备或通信网络通信,处理器1101用于实现本申请上述实施例提供的通信方法中的其他功能。
在具体实现中,作为一种实施例,处理器1101可以包括一个或多个CPU。
在具体实现中,作为一种实施例,该终端可以包括多个处理器。这些处理器中的每一个可以是一个单核处理器,也可以是一个多核处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
基于相同的技术构思,本申请实施例提供了一种终端,用于实现上述方法实施例中第二终端所执行的功能。如图12所示,该终端1200包括处理器1201和通信接口1202,进一步地,终端1200还可以包括存储器1203。
具体地,处理器1201可以是一个通用CPU,微处理器,ASIC,或一个或多个用于控制本申请方案程序执行的集成电路。
通信接口1202,使用任何收发器一类的装置,用于与其他设备或通信网络通信,如以太网,无线接入网(radio access network,RAN),无线局域网(wireless local area networks,WLAN)等。
通信总线1204可包括一通路,在上述组件之间传送信息。
存储器1203可以是只读存储器(read-only memory,ROM)或可存储静态信息和指令的其他类型的静态存储设备,随机存取存储器(random access memory,RAM)或者可存储信息和指令的其他类型的动态存储设备,也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory,EEPROM)或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质,但不限于此。存储器1203可以是独立存在,例如片外存储器,通过通信总线1204与处理器1201相连接。存储器1203也可以和处理器1201集成在一起。
通信接口1202负责与其他设备或通信网络通信,处理器1201用于实现本申请上述实施例提供的通信方法中的其他功能。
在具体实现中,作为一种实施例,处理器1201可以包括一个或多个CPU。
在具体实现中,作为一种实施例,该终端可以包括多个处理器。这些处理器中的每一个可以是一个单核处理器,也可以是一个多核处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
本领域内的技术人员应明白,本申请的实施例可提供为方法、系统、或计算机程序产品。因此,本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然,本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样,倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包含这些改动和变型在内。

Claims (50)

  1. 一种旁链路中的反馈资源确定方法,其特征在于,包括:
    第一终端向第二终端发送旁链路控制信息SCI,所述SCI中包括指示信息,所述指示信息用于指示所述第二终端发送混合自动重传请求HARQ反馈信息所占用的第一资源或者第一资源窗口,所述第一资源窗口包括多个候选第一资源;
    所述第一终端在所述第一资源上接收所述第二终端发送的HARQ反馈信息,或者,在所述第一资源窗口内监听所述第二终端发送的HARQ反馈信息。
  2. 如权利要求1所述的方法,其特征在于,当所述指示信息用于指示所述第二终端发送HARQ反馈信息所占用的第一资源时,在所述第一终端向第二终端发送SCI之前,所述方法还包括:
    所述第一终端监测其他终端发送的SCI;
    所述第一终端根据所述监测到的SCI确定其他终端发送HARQ反馈信息所占用的第二资源,所述其他终端为除所述第一终端之外的终端;
    所述第一终端根据所述第二资源确定所述第一资源。
  3. 如权利要求1所述的方法,其特征在于,当所述指示信息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,所述指示信息包括以下信息中的一种或多种:所述第一资源窗口的大小,所述第一资源窗口的起始位置,所述第一资源窗口的结束位置。
  4. 如权利要求1或3所述的方法,其特征在于,当第一消息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,所述方法还包括:
    所述第一终端接收网络设备发送的所述第一资源窗口的大小;或者
    所述第一终端接收网络设备发送的多个所述第一资源窗口的候选大小,所述第一终端从所述多个第一资源窗口的候选大小中选择出所述第一资源窗口的大小。
  5. 如权利要求1-4中任一项所述的方法,其特征在于,所述第一终端和/或所述第二终端在网络设备的覆盖范围之外。
  6. 一种旁链路中的反馈资源确定方法,其特征在于,包括:
    第二终端接收第一终端发送的旁链路控制信息SCI,所述SCI包括指示信息,所述指示信息用于指示所述第二终端发送混合自动重传请求HARQ反馈信息所占用的第一资源或第一资源窗口,所述第一资源窗口包括多个候选第一资源;
    所述第二终端在所述第一资源上向所述第一终端发送HARQ反馈信息,或者,在所述第一资源窗口内向所述第一终端发送HARQ反馈信息。
  7. 如权利要求6所述的方法,其特征在于,当所述指示信息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,所述指示信息包括以下信息中的一种或多种:所述第一资源窗口的大小,所述第一资源窗口的起始位置,所述第一资源窗口的结束位置。
  8. 如权利要求6所述的方法,其特征在于,所述第二终端在所述第一资源窗口内向所述第二终端发送HARQ反馈信息,包括:
    所述第二终端在所述第一资源窗口中的第一资源上向所述第一终端发送HARQ反馈信息,且所述第二终端在所述第一资源上监测到的能量值不高于预设阈值。
  9. 如权利要求8所述的方法,其特征在于,所述第二终端在所述第一资源窗口中的第一资源上向所述第一终端发送HARQ反馈信息,且所述第二终端在所述第一资源上监测到的能量值不高于 预设阈值,包括:
    所述第二终端在所述第一资源窗口中的第一个候选第一资源上监测能量值,若所述第一个候选第一资源上的能量值不高于预设阈值,则将所述第一个候选第一资源作为所述第一资源;否则,在所述第一资源窗口中的第二个候选第一资源上监测能量值,直至在第N个候选第一资源上监测到的能量值不高于预设阈值,将所述第N个候选第一资源作为所述第一资源,其中,N为大于等于1的整数;
    所述第二终端在所述第一资源上向所述第一终端发送HARQ反馈信息。
  10. 如权利要求8或9所述的方法,其特征在于,还包括:
    所述第二终端确定所述第二终端向第三终端发送数据所占用的第三资源;
    所述第二终端根据所述第三资源确定所述第一资源。
  11. 如权利要求6-10中任一项所述的方法,其特征在于,所述第一终端和/或所述第二终端在网络设备的覆盖范围之外。
  12. 一种旁链路中的反馈资源确定方法,包括:
    第一终端监测其他终端发送的SCI;
    所述第一终端根据所述监测到的SCI确定所述其他终端发送数据所占用的第一资源;
    所述第一终端在第二资源上向第二终端发送数据,所述第二资源是根据第一资源确定的;
    所述第一终端在第三资源上接收所述第二终端发送的HARQ反馈信息,所述第三资源是根据第二资源与第三资源之间的映射关系确定的。
  13. 一种旁链路中的反馈资源确定方法,包括:
    第二终端在第二资源上接收由第一终端发送数据,所述第二资源由第一终端根据第一资源确定,所述第一资源是指除所述第一终端之外的其他终端发送数据所占用的资源;
    所述第二终端在第三资源上向所述第一终端发送HARQ反馈信息,所述第三资源是根据第二资源与第三资源之间的映射关系确定的。
  14. 一种旁链路中的反馈资源确定方法,包括:
    第一终端监测其他终端发送的第一消息,所述第一消息中包括用于指示其他终端发送第二消息所占用的第一资源;
    所述第一终端在第二资源上向第二终端发送第三消息,所述第二资源是根据第一资源确定的;
    所述第一终端在第三资源上接收所述第二终端发送的第四消息。
  15. 一种旁链路中的反馈资源确定方法,包括:
    第二终端在所述第二资源上接收第三消息;
    所述第二终端在第三资源上向所述第一终端发送第四消息,所述第三资源是根据第二资源与第三资源之间的映射关系确定的。
  16. 一种终端,包括:
    发送单元,用于向第二终端发送SCI,所述SCI中包括指示信息,所述指示信息用于指示所述第二终端发送HARQ反馈信息所占用的第一资源或者第一资源窗口,所述第一资源窗口包括多个候选第一资源;
    接收单元,用于在所述第一资源上接收所述第二终端发送的HARQ反馈信息,或者,在所述第一资源窗口内监听所述第二终端发送的HARQ反馈信息。
  17. 如权利要求16所述的终端,其特征在于,还包括确定单元,
    所述接收单元还用于:当所述指示信息用于指示所述第二终端发送HARQ反馈信息所占用的第一资源时,在发送单元向第二终端发送SCI之前,监测其他终端发送的SCI;
    所述确定单元,用于根据所述监测到的SCI确定其他终端发送HARQ反馈信息所占用的第二资源,所述其他终端为除所述第一终端之外的终端;根据所述第二资源确定所述第一资源。
  18. 如权利要求16所述的终端,当所述指示信息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,所述指示信息包括以下信息中的一种或多种:所述第一资源窗口的大小,所述第一资源窗口的起始位置,所述第一资源窗口的结束位置。
  19. 如权利要求16或18所述的终端,还包括选择单元,
    所述接收单元还用于:当第一消息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,接收网络设备发送的所述第一资源窗口的大小,或者接收网络设备发送的多个所述第一资源窗口的候选大小;
    所述选择单元,用于从所述多个第一资源窗口的候选大小中选择出所述第一资源窗口的大小。
  20. 如权利要求16-19中任一项所述的终端,
    在一种可能的实现方式中,所述终端和/或所述第二终端在网络设备的覆盖范围之外。
  21. 一种终端,包括:
    接收单元,用于接收第一终端发送的旁链路控制信息SCI,所述SCI包括指示信息,所述指示信息用于指示所述第二终端发送混合自动重传请求HARQ反馈信息所占用的第一资源或第一资源窗口,所述第一资源窗口包括多个候选第一资源;
    发送单元,用于在所述第一资源上向所述第一终端发送HARQ反馈信息,或者,在所述第一资源窗口内向所述第一终端发送HARQ反馈信息。
  22. 如权利要求21所述的终端,其特征在于,当所述指示信息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,所述指示信息包括以下信息中的一种或多种:所述第一资源窗口的大小,所述第一资源窗口的起始位置,所述第一资源窗口的结束位置。
  23. 如权利要求21所述的终端,其中,
    发送单元具体用于:在所述第一资源窗口中的第一资源上向所述第一终端发送HARQ反馈信息,且接收单元在所述第一资源上监测到的能量值不高于预设阈值。
  24. 如权利要求23所述的终端,其中,
    接收单元具体用于:在所述第一资源窗口中的第一个候选第一资源上监测能量值,若所述第一个候选第一资源上的能量值不高于预设阈值,则将所述第一个候选第一资源作为所述第一资源;否则,在所述第一资源窗口中的第二个候选第一资源上监测能量值,直至在第N个候选第一资源上监测到的能量值不高于预设阈值,将所述第N个候选第一资源作为所述第一资源,其中,N为大于等于1的整数。
  25. 如权利要求23或24所述的终端,包括确定单元,
    所述确定单元用于:确定所述第二终端向第三终端发送数据所占用的第三资源;根据所述第三资源确定所述第一资源。
  26. 如权利要求21-25中任一项所述的终端,其中,所述第一终端和/或所述第二终端在网络设备的覆盖范围之外。
  27. 一种终端,包括:
    接收单元,用于监测其他终端发送的SCI;
    处理单元,用于端根据所述监测到的SCI确定所述其他终端发送数据所占用的第一资源;
    发送单元,用于在第二资源上向第二终端发送数据,所述第二资源是根据第一资源确定的;
    所述接收单元,还用于在第三资源上接收所述第二终端发送的HARQ反馈信息,所述第三资源是根据第二资源与第三资源之间的映射关系确定的。
  28. 一种终端,包括:
    接收单元,用于在第二资源上接收由第一终端发送数据,所述第二资源由第一终端根据第一资源确定,所述第一资源是指除所述第一终端之外的其他终端发送数据所占用的资源;
    发送单元,用于在第三资源上向所述第一终端发送HARQ反馈信息,所述第三资源是根据第二资源与第三资源之间的映射关系确定的。
  29. 一种终端,包括:
    接收单元,用于监测其他终端发送的第一消息,所述第一消息中包括用于指示其他终端发送第二消息所占用的第一资源;
    发送单元,用于在第二资源上向第二终端发送第三消息,所述第二资源是根据第一资源确定的;
    所述接收单元,还用于在第三资源上接收所述第二终端发送的第四消息。
  30. 一种终端,包括:
    接收单元,用于在所述第二资源上接收第三消息;
    发送单元,用于在第三资源上向所述第一终端发送第四消息,所述第三资源是根据第二资源与第三资源之间的映射关系确定的。
  31. 一种终端,其特征在于,包括:处理器和通信接口,所述处理器与存储器和所述通信接口耦合;
    所述通信接口用于与其他设备进行通信;
    所述处理器用于运行所述存储器内的指令或程序,执行以下步骤:
    通过所述通信接口向第二终端发送旁链路控制信息SCI,所述SCI中包括指示信息,所述指示信息用于指示所述第二终端发送混合自动重传请求HARQ反馈信息所占用的第一资源或者第一资源窗口,所述第一资源窗口包括多个候选第一资源;
    通过所述通信接口在所述第一资源上接收所述第二终端发送的HARQ反馈信息,或者,在所述第一资源窗口内监听所述第二终端发送的HARQ反馈信息。
  32. 如权利要求31所述的终端,其特征在于,当所述指示信息用于指示所述第二终端发送HARQ反馈信息所占用的第一资源时,所述处理器还用于:
    在通过所述通信接口向第二终端发送SCI之前,通过所述通信接口监测其他终端发送的SCI;
    根据所述监测到的SCI确定其他终端发送HARQ反馈信息所占用的第二资源,所述其他终端为 除所述第一终端之外的终端;
    根据所述第二资源确定所述第一资源。
  33. 如权利要求31所述的终端,其特征在于,当所述指示信息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,所述指示信息包括以下信息中的一种或多种:所述第一资源窗口的大小,所述第一资源窗口的起始位置,所述第一资源窗口的结束位置。
  34. 如权利要求31或33所述的终端,其特征在于,当第一消息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,所述处理器还用于:
    通过所述通信接口接收网络设备发送的所述第一资源窗口的大小;或者
    通过所述通信接口接收网络设备发送的多个所述第一资源窗口的候选大小,所述第一终端从所述多个第一资源窗口的候选大小中选择出所述第一资源窗口的大小。
  35. 如权利要求31-34中任一项所述的终端,其特征在于,所述第一终端和/或所述第二终端在网络设备的覆盖范围之外。
  36. 一种终端,其特征在于,包括:处理器和通信接口,所述处理器与存储器和所述通信接口耦合;
    所述通信接口用于与其他设备进行通信;
    所述处理器用于运行所述存储器内的指令或程序,执行以下步骤:
    通过所述通信接口接收第一终端发送的旁链路控制信息SCI,所述SCI包括指示信息,所述指示信息用于指示所述第二终端发送混合自动重传请求HARQ反馈信息所占用的第一资源或第一资源窗口,所述第一资源窗口包括多个候选第一资源;
    通过所述通信接口在所述第一资源上向所述第一终端发送HARQ反馈信息,或者,在所述第一资源窗口内向所述第一终端发送HARQ反馈信息。
  37. 如权利要求36所述的终端,其特征在于,当所述指示信息用于指示所述第二终端发送HARQ反馈信息的第一资源窗口时,所述指示信息包括以下信息中的一种或多种:所述第一资源窗口的大小,所述第一资源窗口的起始位置,所述第一资源窗口的结束位置。
  38. 如权利要求36所述的终端,其特征在于,所述处理器具体用于:
    通过所述通信接口在所述第一资源窗口中的第一资源上向所述第一终端发送HARQ反馈信息,且通过所述通信接口在所述第一资源上监测到的能量值不高于预设阈值。
  39. 如权利要求38所述的终端,其特征在于,所述处理器具体用于:
    通过所述通信接口在所述第一资源窗口中的第一个候选第一资源上监测能量值,若所述第一个候选第一资源上的能量值不高于预设阈值,则将所述第一个候选第一资源作为所述第一资源;否则,在所述第一资源窗口中的第二个候选第一资源上监测能量值,直至在第N个候选第一资源上监测到的能量值不高于预设阈值,将所述第N个候选第一资源作为所述第一资源,其中,N为大于等于1的整数;
    通过所述通信接口在所述第一资源上向所述第一终端发送HARQ反馈信息。
  40. 如权利要求38或39所述的终端,其特征在于,所述处理器还用于:
    确定所述第二终端向第三终端发送数据所占用的第三资源;
    根据所述第三资源确定所述第一资源。
  41. 如权利要求36-40中任一项所述的方法,其特征在于,所述第一终端和/或所述第二终端 在网络设备的覆盖范围之外。
  42. 一种终端,包括:处理器和通信接口,所述处理器与存储器和所述通信接口耦合;
    所述通信接口用于与其他设备进行通信;
    所述处理器用于运行所述存储器内的指令或程序,执行以下步骤:
    通过通信接口监测其他终端发送的SCI;
    处理单元,用于端根据所述监测到的SCI确定所述其他终端发送数据所占用的第一资源;
    通过通信接口在第二资源上向第二终端发送数据,所述第二资源是根据第一资源确定的;
    所述接收单元,还用于在第三资源上接收所述第二终端发送的HARQ反馈信息,所述第三资源是根据第二资源与第三资源之间的映射关系确定的。
  43. 一种终端,处理器和通信接口,所述处理器与存储器和所述通信接口耦合;
    所述通信接口用于与其他设备进行通信;
    所述处理器用于运行所述存储器内的指令或程序,执行以下步骤:
    通过通信接口在第二资源上接收由第一终端发送数据,所述第二资源由第一终端根据第一资源确定,所述第一资源是指除所述第一终端之外的其他终端发送数据所占用的资源;
    通过通信接口在第三资源上向所述第一终端发送HARQ反馈信息,所述第三资源是根据第二资源与第三资源之间的映射关系确定的。
  44. 一种终端,处理器和通信接口,所述处理器与存储器和所述通信接口耦合;
    所述通信接口用于与其他设备进行通信;
    所述处理器用于运行所述存储器内的指令或程序,执行以下步骤:
    通过通信接口监测其他终端发送的第一消息,所述第一消息中包括用于指示其他终端发送第二消息所占用的第一资源;
    通过通信接口在第二资源上向第二终端发送第三消息,所述第二资源是根据第一资源确定的;
    所述接收单元,还用于在第三资源上接收所述第二终端发送的第四消息。
  45. 一种终端,处理器和通信接口,所述处理器与存储器和所述通信接口耦合;
    所述通信接口用于与其他设备进行通信;
    所述处理器用于运行所述存储器内的指令或程序,执行以下步骤:
    通过通信接口在所述第二资源上接收第三消息;
    通过通信接口在第三资源上向所述第一终端发送第四消息,所述第三资源是根据第二资源与第三资源之间的映射关系确定的。
  46. 一种装置,其特征在于,所述装置包括处理器,所述处理器用于与存储器耦合,并读取存储器中的指令并根据所述指令执行如权利要求1-5或6-11中任一项所述的方法。
  47. 一种计算机可读存储介质,其特征在于,包括指令,当其在计算机上运行时,使得计算机执行如权利要求1-5中任一项所述的方法,或使得计算机执行如权利要求6-11中任一项所述的方法。
  48. 一种计算机程序产品,其特征在于,当其在计算机上运行时,使得计算机执行如权利要求1-5中中任一项所述的方法,或使得计算机执行如权利要求6-11中任一项所述的方法。
  49. 一种芯片,其特征在于,与存储器相连或者包括存储器,用于读取并执行所述存储器中存储的软件程序,以实现如权利要求1-5中任一项所述的方法,或实现如权利要求6-11中任一项所述的方法。
  50. 一种通信设备,其特征在于,包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,其特征在于,所述处理器执行所述程序时,实现如权利要求1-5中任一项所述的方法,或实现如权利要求6-11中任一项所述的方法。
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