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WO2021226972A1 - 边链路反馈信息的发送和接收方法以及装置 - Google Patents

边链路反馈信息的发送和接收方法以及装置 Download PDF

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Publication number
WO2021226972A1
WO2021226972A1 PCT/CN2020/090380 CN2020090380W WO2021226972A1 WO 2021226972 A1 WO2021226972 A1 WO 2021226972A1 CN 2020090380 W CN2020090380 W CN 2020090380W WO 2021226972 A1 WO2021226972 A1 WO 2021226972A1
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WIPO (PCT)
Prior art keywords
side link
priority
information
indication information
control channel
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Application number
PCT/CN2020/090380
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English (en)
French (fr)
Inventor
张健
纪鹏宇
王昕�
Original Assignee
富士通株式会社
张健
纪鹏宇
王昕�
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 富士通株式会社, 张健, 纪鹏宇, 王昕� filed Critical 富士通株式会社
Priority to CN202080099888.2A priority Critical patent/CN115428551A/zh
Priority to KR1020227038879A priority patent/KR20220165755A/ko
Priority to JP2022567132A priority patent/JP7444291B2/ja
Priority to PCT/CN2020/090380 priority patent/WO2021226972A1/zh
Priority to EP20935330.9A priority patent/EP4152845A4/en
Publication of WO2021226972A1 publication Critical patent/WO2021226972A1/zh
Priority to US17/981,334 priority patent/US20230057942A1/en

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    • H—ELECTRICITY
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    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
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    • H04W72/00—Local resource management
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    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
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    • H—ELECTRICITY
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    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
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    • H04L1/1829—Arrangements specially adapted for the receiver end
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    • H—ELECTRICITY
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    • H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling
    • H—ELECTRICITY
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    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
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    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the embodiments of the application relate to the field of communication technology.
  • V2X Vehicle to Everything
  • Uu links including uplink and downlink
  • V2X transmitting terminal equipment communicates with receiving terminal equipment through sidelinks. Communicate directly.
  • New Radio (NR) V2X is an important project of 5G NR. Compared with Long Term Evolution (LTE) V2X, NR V2X needs to support many new scenarios and new services and meet higher technical indicators.
  • LTE Long Term Evolution
  • NR V2X defines several physical channels, including physical side link control channel (PSCCH, Physical Sidelink Control Channel), physical side link shared channel (PSSCH, Physical Sidelink Shared Channel), and physical side link feedback channel (PSFCH, Physical Sidelink Feedback Channel is used to carry side link control information (SCI, Sidelink Control Information), side link data, and side link feedback information (for example, HARQ-ACK).
  • PSCCH Physical Sidelink Control Channel
  • PSSCH physical side link shared channel
  • PSFCH Physical Sidelink Feedback Channel is used to carry side link control information (SCI, Sidelink Control Information), side link data, and side link feedback information (for example, HARQ-ACK).
  • NR V2X defines two working modes.
  • NR V2X Mode 1 the time-frequency resources (referred to as resources) used by terminal equipment for V2X communication are scheduled and allocated by network equipment (such as base stations) through NR Uu links, and terminal equipment can be controlled through physical uplink The channel (PUCCH, Physical Uplink Control Channel) feeds back ACK/NACK to the network device.
  • PUCCH Physical Uplink Control Channel
  • NR V2X Mode 2 the terminal device can autonomously select the time-frequency resource used for V2X communication based on the sensing result.
  • Mode 1 also includes dynamic authorization (DG, dynamic grant) and configuration authorization (CG, configured grant, or called authorization-free).
  • DG dynamic authorization
  • CG configuration authorization
  • the terminal device can use dynamic authorized resources or configure authorized resources for side link transmission (including initial transmission or retransmission).
  • the network device schedules side link resources through a physical downlink control channel (PDCCH, Physical Downlink Control Channel) or downlink control information (DCI, Downlink Control Information).
  • PDCCH Physical Downlink Control Channel
  • DCI Downlink Control Information
  • network equipment configures periodic side link resources through radio resource control (RRC, Radio Resource Control) signaling, and terminal equipment can directly use the configured resources for PSSCH transmission without the need to pass a scheduling request (SR, Scheduling Request). ) Request side link resources from the network device.
  • RRC Radio Resource Control
  • the terminal device can obtain the ACK/NACK information of the PSSCH by receiving the PSFCH, and send the side link ACK/NACK information carried by the PSFCH to the network device through the PUCCH.
  • the network device indicates the PUCCH resource through the PDCCH.
  • PUCCH resources can be configured through RRC in each cycle of configuration authorization.
  • the network device can use the dynamic grant (through the PDCCH) to schedule side link retransmissions, and can indicate the PUCCH resources associated with the retransmission resources in the PDCCH. If the NACK continues to be received on the PUCCH, the network device can continue to schedule retransmissions, and the network device can independently determine the maximum number of retransmission scheduling.
  • the terminal device may also need to perform side link transmission at the same time when transmitting the PUCCH carrying the side link HARQ-ACK. Since the terminal device has the maximum transmission power limit, the terminal device will compare the priorities and decide to discard the party with the lower priority based on the result of the priority comparison, that is, the terminal device either discards the PUCCH transmission or discards the side link transmission, thus making the transmission The power does not exceed the maximum power limit.
  • the network device When the above priority comparison process causes the PUCCH carrying the side link ACK to be discarded, the network device will continue to schedule the side link retransmission because it has not received any ACK/NACK. However, because the terminal device has already fed back on the physical side link The ACK is received on the channel, and there is no data to be sent at this time, so the retransmission scheduled by the network device is completely unnecessary. Since these scheduled retransmission resources cannot be used by any device, this will cause unnecessary waste of resources.
  • embodiments of the present application provide a method and device for sending and receiving side link feedback information.
  • a method for sending side link feedback information including:
  • the terminal device receives the downlink control information that the cyclic redundancy check is scrambled by the side link wireless network temporary identification or the side link configuration scheduling wireless network temporary identification; wherein the downlink control information indicates the dynamic authorized resource, and the terminal device is scheduled to use it
  • the dynamically authorized resource is sent on the first side link;
  • Generate first indication information for indicating that the transmission of the first side link is successful or does not require network equipment to schedule retransmission, wherein the first side link is not performed on the dynamic authorized resources scheduled by the downlink control information Sent, and the priority of the first indication information is pre-configured;
  • an apparatus for sending side link feedback information including:
  • the receiving unit receives the downlink control information that the cyclic redundancy check is scrambled by the side link wireless network temporary identification or the side link configuration scheduling wireless network temporary identification; wherein the downlink control information indicates the dynamic authorized resource, and the terminal is scheduled
  • the device uses the dynamic authorized resource to perform the first side link transmission;
  • An indication generating unit which generates first indication information used to indicate that the first side link transmission is successful or does not require network equipment to schedule retransmission, wherein the said downlink control information scheduling dynamic grant resource is not performed
  • the first side link is sent, and the priority of the first indication information is pre-configured
  • a sending unit that sends the first indication information through the first physical uplink control channel indicated by the downlink control information.
  • a method for receiving side link feedback information including:
  • the network device sends the downlink control information that the cyclic redundancy check is scrambled by the side link wireless network temporary identification or the side link configuration scheduling wireless network temporary identification; wherein the downlink control information indicates the dynamic authorized resource, and the terminal device is scheduled to use it The dynamic authorized resource is sent on the side link; and
  • the side link transmission is not performed on the dynamic authorized resource scheduled by the downlink control information, and the indication information is used by the terminal device to indicate that the side link transmission is successful or does not require network equipment to schedule retransmission, And the priority of the indication information is pre-configured.
  • an apparatus for receiving side link feedback information including:
  • the sending unit sends the downlink control information that the cyclic redundancy check is scrambled by the side link wireless network temporary identification or the side link configuration scheduling wireless network temporary identification; wherein the downlink control information indicates the dynamic authorized resource, and the terminal is scheduled
  • the device uses the dynamic authorized resource to perform side link transmission;
  • a receiving unit which receives the indication information sent through the physical uplink control channel indicated by the downlink control information
  • the side link transmission is not performed on the dynamic authorized resource scheduled by the downlink control information, and the indication information is used by the terminal device to indicate that the side link transmission is successful or does not require network equipment to schedule retransmission, And the priority of the indication information is pre-configured.
  • the terminal device feeds back indication information (ACK) on the PUCCH associated with the resource without data transmission, and the priority of the indication information is pre-configured.
  • ACK indication information
  • Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is an example diagram of sending feedback information according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a method for sending side link feedback information according to an embodiment of the present application
  • FIG. 4 is a schematic diagram of a method for sending and receiving side link feedback information according to an embodiment of the present application
  • FIG. 5 is another example diagram of sending feedback information according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of priority comparison of embodiments of the present application.
  • FIG. 7 is a schematic diagram of a method for receiving side link feedback information according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of an apparatus for sending side link feedback information according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of an apparatus for receiving side link feedback information according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a network device according to an embodiment of the present application.
  • Fig. 11 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • the terms “first”, “second”, etc. are used to distinguish different elements from the terms, but they do not indicate the spatial arrangement or chronological order of these elements. These elements should not be used by these terms. Limited.
  • the term “and/or” includes any and all combinations of one or more of the associated listed terms.
  • the terms “comprising”, “including”, “having” and the like refer to the existence of the stated features, elements, elements or components, but do not exclude the presence or addition of one or more other features, elements, elements or components.
  • the term "communication network” or “wireless communication network” can refer to a network that meets any of the following communication standards, such as Long Term Evolution (LTE), and Enhanced Long Term Evolution (LTE-A, LTE-A). Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed Packet Access (HSPA, High-Speed Packet Access), etc.
  • LTE Long Term Evolution
  • LTE-A Enhanced Long Term Evolution
  • LTE-A LTE-A
  • Advanced Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • High-Speed Packet Access High-Speed Packet Access
  • HSPA High-Speed Packet Access
  • the communication between devices in the communication system can be carried out according to any stage of communication protocol, for example, it can include but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and 5G , New Radio (NR, New Radio), etc., and/or other currently known or future communication protocols.
  • 1G generation
  • 2G 2.5G
  • 2.75G 3G
  • 4G 4G
  • 4.5G 3G
  • 5G New Radio
  • NR, New Radio New Radio
  • Network device refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device.
  • Network equipment may include but not limited to the following equipment: base station (BS, Base Station), access point (AP, Access Point), transmission and reception point (TRP, Transmission Reception Point), broadcast transmitter, mobile management entity (MME, Mobile Management Entity), gateway, server, radio network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller), etc.
  • the base station may include but is not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), 5G base station (gNB), etc., and may also include remote radio head (RRH, Remote Radio Head) , Remote Radio Unit (RRU, Remote Radio Unit), relay (relay), or low-power node (such as femeto, pico, etc.).
  • NodeB Node B
  • eNodeB or eNB evolved Node B
  • gNB 5G base station
  • RRH Remote Radio Head
  • RRU Remote Radio Unit
  • relay relay
  • low-power node such as femeto, pico, etc.
  • base station can include some or all of their functions, and each base station can provide communication coverage for a specific geographic area.
  • the term "cell” may refer to a base station and/or its coverage area, depending on the context in which the term is used.
  • the term "User Equipment” (UE, User Equipment) or “Terminal Equipment” (TE, Terminal Equipment or Terminal Device), for example, refers to a device that accesses a communication network through a network device and receives network services.
  • the terminal device may be fixed or mobile, and may also be called a mobile station (MS, Mobile Station), terminal, subscriber station (SS, Subscriber Station), access terminal (AT, Access Terminal), station, etc.
  • terminal devices may include but are not limited to the following devices: cellular phones (Cellular Phone), personal digital assistants (PDAs, Personal Digital Assistant), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, Cordless phones, smart phones, smart watches, digital cameras, etc.
  • cellular phones Cellular Phone
  • PDAs personal digital assistants
  • wireless modems wireless communication devices
  • handheld devices machine-type communication devices
  • laptop computers Cordless phones
  • smart phones smart watches, digital cameras, etc.
  • a terminal device may also be a machine or device that performs monitoring or measurement.
  • it may include, but is not limited to: Machine Type Communication (MTC) terminals, In-vehicle communication terminals, device to device (D2D, Device to Device) terminals, machine to machine (M2M, Machine to Machine) terminals, etc.
  • MTC Machine Type Communication
  • D2D Device to Device
  • M2M Machine to Machine
  • network side or “network device side” refers to a side of the network, which may be a certain base station, and may also include one or more network devices as described above.
  • user side or “terminal side” or “terminal device side” refers to a side of a user or a terminal, which may be a certain UE, and may also include one or more terminal devices as described above.
  • equipment can refer to network equipment or terminal equipment.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application, schematically illustrating a case where a terminal device and a network device are taken as an example.
  • the communication system 100 may include a network device 101 and terminal devices 102 and 103.
  • FIG. 1 only takes two terminal devices and one network device as an example for description, but the embodiment of the present application is not limited to this.
  • the network device 101 and the terminal devices 102 and 103 can perform existing services or future service delivery.
  • these services may include, but are not limited to: enhanced Mobile Broadband (eMBB), massive machine type communication (mMTC, massive Machine Type Communication), and high-reliability and low-latency communication (URLLC, Ultra-Reliable and Low). -Latency Communication), etc.
  • eMBB enhanced Mobile Broadband
  • mMTC massive machine type communication
  • URLLC Ultra-Reliable and Low
  • -Latency Communication etc.
  • FIG. 1 shows that two terminal devices 102 and 103 are both within the coverage of the network device 101, but the application is not limited to this.
  • the two terminal devices 102 and 103 may not be within the coverage area of the network device 101, or one terminal device 102 is within the coverage area of the network device 101 and the other terminal device 103 is outside the coverage area of the network device 101.
  • side link transmission may be performed between the two terminal devices 102 and 103.
  • the two terminal devices 102 and 103 may both perform side link transmission within the coverage area of the network device 101 to implement V2X communication, or both may perform side link transmission outside the coverage area of the network device 101 to implement V2X communication.
  • one terminal device 102 is within the coverage area of the network device 101 and the other terminal device 103 is outside the coverage area of the network device 101 to perform side link transmission to implement V2X communication.
  • the terminal device 102 and/or 103 may be allocated side link resources by the network device (that is, Mode 1 is adopted).
  • the embodiment of the present application can also combine the autonomous selection of side link resources (ie, Mode 2) and the allocation of side link resources by the network device (ie, Mode 1); this embodiment of the present application does not limit this.
  • network equipment schedules side link resources through PDCCH, and the cyclic redundancy check (CRC, Cyclic Redundancy Check) of the PDCCH is scrambled by the side link radio network temporary identifier (SL-RNTI, Sideline Radio Network Temporary Identifier) .
  • CRC Cyclic Redundancy Check
  • SL-RNTI Sideline Radio Network Temporary Identifier
  • an opportunity to send PUCCH can be configured through RRC in each cycle.
  • network equipment can use dynamic grant (via PDCCH) to schedule retransmission resources, and can indicate the retransmission in PDCCH
  • the PUCCH resource associated with the resource, the CRC of the PDCCH is scrambled by the side link configuration scheduling radio network temporary identifier (SL-CS-RNTI, Sideline Configured Scheduling Radio Network Temporary Identifier).
  • SL-CS-RNTI Sideline Configured Scheduling Radio Network Temporary Identifier
  • the PSCCH/PSSCH resources configured through RRC in the configuration authorization are referred to as configuration authorization resources
  • the PSCCH/PSSCH resources scheduled by the network device in the configuration authorization are referred to as dynamic authorization resources.
  • the priority of the PUCCH is defined as the highest priority among all the side link HARQ-ACKs carried by the PUCCH. For a side link HARQ-ACK carried in the PUCCH, its priority is equal to the priority of the PSFCH to which it is associated, and it is also equal to the priority of the PSSCH to which it is associated.
  • a HARQ-ACK for a PSSCH it is carried by the PSFCH and also carried by the PUCCH. Therefore, the HARQ-ACK, PSFCH and PSSCH in the above PUCCH are associated with each other.
  • the PSSCH ( PSFCH) is the PSSCH (PSFCH) associated with the aforementioned HARQ-ACK, and the three have the same priority.
  • PSSCH PSCCH
  • SCI PSCCH
  • the priority of PSCCH, PSSCH, and PSFCH can all be attributed to the priority indicated by the priority field derived from the SCI.
  • the priority is (pre)configured. Therefore, the priority of PUCCH can be directly compared with the priority of side link transmission.
  • the network device will continue to schedule the side link retransmission because it has not received any ACK/NACK. However, since the terminal device has received the ACK, The terminal device does not have data to send at this time, so the retransmission scheduled by the network device is completely unnecessary. Since these scheduled retransmission resources cannot be used by any device, this will cause unnecessary waste of resources.
  • Fig. 2 is a diagram of an example of sending feedback information in an embodiment of the present application.
  • the base station allocates resources for PSCCH/PSSCH transmission (PSSCH#0, etc.) to the terminal device through grant #0 (grant#0), and allocates PUCCH resources (PUCCH#0).
  • grant#0 can be dynamic authorization or configuration authorization. Dynamic authorization is based on DCI scheduling; configuration authorization is based on RRC configuration.
  • the terminal device receives the ACK on the PSFCH after transmitting PSSCH#0, so the terminal device does not need to continue to send retransmissions on the PSSCH resources after PSSCH#0.
  • the terminal device should send ACK on PUCCH#0.
  • the terminal device discards PUCCH#0, that is, the terminal device does not perform any transmission on PUCCH#0.
  • the base station does not receive any ACK or NACK on PUCCH#0, which is actually a discontinuous transmission (DTX, Discontinuous Transmission) for the base station, so the base station may think that the resources allocated by grant#0 to the terminal device are not enough. Ideally, the terminal equipment will continue to be scheduled for retransmission.
  • the initial transmission and retransmission in the article are for the same HARQ process, that is, for the same transmission block (TB, Transmission Block).
  • the base station schedules dynamic grant #1 (dynamic grant#1) through DCI, and allocates retransmission resources and PUCCH resources to the terminal device.
  • dynamic grant#1 dynamic grant#1
  • the terminal device since the terminal device has previously received the ACK on the PSFCH, the terminal device may have emptied the buffer, so there is no data to send. If there is no regulation on the behavior of the terminal device at this time, the terminal device will find that the transmission condition is not met, and therefore will not perform any transmission on the PSSCH resource and PUCCH resource allocated by dynamic grant#1.
  • the base station Since the terminal device does not report the HARQ-ACK to the base station on PUCCH#1, the base station will still consider it as DTX, so it continues to schedule dynamic grant #2 (dynamic grant#2). In the same way, since the terminal device still will not send HARQ-ACK on PUCCH, the base station may continue to schedule dynamic grant#3, dynamic grant#4, etc. However, these continuously scheduled retransmissions are not necessary and are allocated The retransmission resources cannot be used by any device, so it will cause a great waste of resources. The embodiments of the present application provide corresponding solutions for this.
  • V2X is taken as an example to describe the side link, but the present application is not limited to this, and may also be applicable to side link transmission scenarios other than V2X.
  • side link and “V2X” can be interchanged
  • PSFCH and “side link feedback channel”
  • PSCCH and " Side link control channel” or “side link control information”
  • PSSCH and “side link data channel” or “side link data” can also be interchanged.
  • transmitting or receiving PSSCH can be understood as sending or receiving side link data carried by the PSSCH; sending or receiving PSFCH can be understood as sending or receiving side link feedback information carried by the PSFCH.
  • the embodiment of the present application provides a method for sending side link feedback information, which is described from a terminal device.
  • the terminal device (which may be referred to as a transmitting terminal device) serves as a sender of service data and sends side link data to one or more other terminal devices (which may be referred to as a receiving terminal device).
  • the terminal device (which may be referred to as a sending terminal device) can receive the dynamic authorization of the network device and send feedback information to the network device.
  • Fig. 3 is a schematic diagram of a method for sending side link feedback information according to an embodiment of the present application. As shown in Fig. 3, the method includes:
  • the terminal device receives downlink control information (DCI) in which the CRC is scrambled by the SL-RNTI or SL-CS-RNTI; wherein the downlink control information indicates a dynamic authorized resource, and the terminal device is scheduled to use the dynamic authorized resource to perform the first One side link transmission;
  • DCI downlink control information
  • the terminal device generates first indication information used to indicate that the transmission of the first side link is successful or does not require network equipment to schedule retransmission, wherein the first side link is not performed on the dynamic authorized resources scheduled by the downlink control information.
  • Link transmission, and the priority of the first indication information is pre-configured;
  • the terminal device sends the first indication information through the first physical uplink control channel indicated by the downlink control information.
  • Figure 3 above only schematically illustrates the embodiments of the present application, but the present application is not limited thereto.
  • the order of execution among various operations can be appropriately adjusted, and some other operations can be added or some operations can be reduced.
  • Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of FIG. 3 above.
  • the side link transmission is performed through the physical side link control channel and/or the physical side link shared channel, and the specific content of the side link transmission and reception can be referred to related technologies.
  • the terminal device feeds back indication information (ACK) on the PUCCH associated with the resource for which no data is sent, and the priority of the indication information is pre-configured.
  • ACK indication information
  • Fig. 4 is a schematic diagram of a method for sending and receiving side link feedback information according to an embodiment of the present application. As shown in Fig. 4, the method includes:
  • the terminal device uses dynamic authorized resources or configures authorized resources and performs second-side link transmission through PSCCH and/or PSSCH.
  • the terminal device receives, through the PSFCH, second indication information (ACK) used to indicate that the second side link transmission is successful; and
  • ACK second indication information
  • the terminal device compares the priorities of channels or signals and determines that the second PUCCH that carries the second indication information cannot be sent.
  • the method further includes:
  • the terminal device receives downlink control information (DCI) in which the CRC is scrambled by the SL-RNTI or SL-CS-RNTI; wherein the downlink control information indicates a dynamic authorized resource, and the terminal device is scheduled to use the dynamic authorized resource and pass Physical side link control channel and/or physical side link shared channel for first side link transmission;
  • DCI downlink control information
  • the terminal device generates first indication information used to indicate that the transmission of the first side link is successful or does not require network equipment to schedule retransmission, wherein the first side link is not performed on the dynamic authorized resources scheduled by the downlink control information. Link transmission, and the priority of the first indication information is pre-configured;
  • a priority comparison of channels or signals may also be performed.
  • the priority comparison of channels or signals may not be performed.
  • the method further includes:
  • the terminal device determines that the first physical uplink control channel indicated by the downlink control information can be sent.
  • the terminal device sends the first indication information through the first physical uplink control channel.
  • the terminal device determines that the first physical uplink control channel indicated by the downlink control information cannot be sent. In this case, the terminal device does not send the first physical uplink control channel that carries the first indication information.
  • the uplink control channel for example, the terminal device transmits a signal or signal overlapping with the first physical uplink control channel, and the channel or signal may be uplink transmission or side link transmission.
  • Figure 4 above only schematically illustrates the embodiments of the present application, but the present application is not limited thereto.
  • the order of execution among various operations can be appropriately adjusted, and some other operations can be added or some operations can be reduced.
  • Those skilled in the art can make appropriate modifications based on the foregoing content, and are not limited to the description of the foregoing FIG. 4.
  • a terminal device when a terminal device receives a dynamic grant from a base station, and the dynamic grant schedules PSSCH resources and PUCCH resources, if the terminal device does not perform on any PSSCH resources scheduled by the dynamic grant.
  • Link transmission the terminal device sends an ACK to the base station on the PUCCH scheduled by the dynamic grant.
  • the ACK transmission overlaps with other side link transmissions or uplink transmissions in time, and priority comparison is required and some transmissions are discarded, the ACK is considered to have the lowest side link priority.
  • FIG. 5 is a diagram of an example of sending feedback information according to an embodiment of the present application, and it is assumed to be the same as FIG.
  • the terminal device finds that there is no data to send, so the terminal device does not perform side link transmission on the PSSCH resource allocated by dynamic grant#1, but the terminal device will dynamically grant# 1 sends an ACK to the base station on the allocated PUCCH resource (PUCCH#1), that is, informs the base station that it does not need to continue to schedule retransmissions.
  • PUCCH#1 PUCCH resource
  • the base station receives the ACK, it will not continue to schedule retransmissions, that is, it will not continue to schedule dynamic grant#2, so that unnecessary retransmissions of continuous scheduling will not occur.
  • the terminal device does not send an ACK on PUCCH#0 scheduled by dynamic grant#0, but the terminal device does not need to save this ACK result record to the moment when it is sent on PUCCH#1.
  • the terminal device finds that there is no data to be sent, and can send an ACK on PUCCH#1 without the need for the terminal device to perform additional operations to record and save the ACK result.
  • the first side link transmission and the second side link transmission have the same hybrid automatic repeat request process ID (HARQ process ID).
  • HARQ process ID hybrid automatic repeat request process ID
  • the new data indication (NDI, new data indication) field of the DCI scrambled by the SL-RNTI is not flipped (NDI does not toggle), and the data of the DCI scrambled by the SL-CS-RNTI is not toggled.
  • the value of the NDI field is 1. Thus, it can indicate that the first side link transmission is a retransmission.
  • the priority of the second indication information (ACK) is determined according to the priority indication field in the physical side link control channel.
  • the priority of the first indication information is pre-configured as the lowest side link priority.
  • the priority value of the side link can be defined as 0-7, where 0 means the side link has the highest priority, 7 means the side link has the lowest priority, and the first indication information (ACK)
  • the priority value is configured as 7.
  • the priority of the first indication information is pre-configured as the priority of a certain side link.
  • the edge link priority value can be defined as 0-7, where 0 means the edge link priority is the highest, and 7 means the edge link priority is the lowest.
  • the priority value of the first indication message (ACK) can be Configured as a value between 0 and 7.
  • the priority of the first physical uplink control channel is determined at least according to the priority of the first indication information. For example, the first physical uplink control channel only carries the first indication information, and the priority of the first physical uplink control channel is equal to the priority of the first indication information.
  • the terminal device may also overlap with other side link transmissions or uplink transmissions in time, resulting in terminal equipment that needs to be discarded according to the priority level. Therefore, it is necessary to determine the PUCCH#1 priority. Since the terminal device does not transmit on the PSSCH resource scheduled by dynamic grant 1, there is no PSSCH associated with the ACK carried by PUCCH#1, so the priority of the ACK cannot be determined according to the priority of the PSSCH. Therefore, if this is not specified, the terminal device will have undefined device behavior when deciding the priority of PUCCH#1, making the priority ordering uncertain.
  • the priority of ACK can be defined as always equal to the lowest side link priority, that is, the priority of ACK is the lowest priority of all side links. Yes, but this application is not limited to this.
  • the terminal device compares the priorities of channels or signals, if it is determined that the first physical uplink control channel indicated by the downlink control information cannot be sent; Overlapping channels or signals, such as uplink transmission or side link transmission. That is, in the case that the first physical uplink control channel indicated by the downlink control information cannot be sent, the first physical uplink control channel carrying the first indication information is not sent.
  • Fig. 6 is a schematic diagram of priority comparison of the embodiments of the present application.
  • the terminal device since the terminal device has no data to send, ACK is sent on the PUCCH, and the PUCCH only carries ACK (the PUCCH bearer is not associated with PSSCH ACK).
  • the terminal device discards the PUCCH and only performs the side link transmission.
  • the network device Since the network device still has not received the first indication information (ACK), it may send the dynamic authorization again. The terminal device may wait for the dynamic authorization and then send the first indication information (ACK) on the corresponding PUCCH.
  • ACK first indication information
  • the first physical uplink control channel carries multiple pieces of feedback information, and the first indication information has the lowest side link priority among the multiple pieces of feedback information.
  • the priority of the first physical uplink control channel is equal to the highest priority of the multiple pieces of feedback information carried by the first physical uplink control channel.
  • the PUCCH may also carry multiple HARQ-ACK bits.
  • the PUCCH carries a HARQ-ACK codebook, and the priority of the PUCCH is the highest priority among all HARQ-ACKs.
  • the priority of the PUCCH is considered to be the lowest side link priority, and then it is compared with other HARQ-ACKs. The priority of HARQ-ACK is compared.
  • the terminal device feeds back indication information (ACK) on the PUCCH associated with the resource without data transmission, and the priority of the indication information is pre-configured.
  • ACK indication information
  • the embodiment of the present application provides a method for sending side link feedback information, which can be combined with the embodiment of the first aspect or can be implemented separately; the same content as the embodiment of the first aspect will not be repeated.
  • the terminal device generates an indication message (NACK) indicating that the side link transmission is unsuccessful; wherein the side link data sent by the side link is not sent (for example, discarded); the terminal device uses the physical
  • the uplink control channel sends the indication information (NACK); wherein the priority of the indication information is configured as the priority of the logical channel.
  • the terminal device when the terminal device discards the side link transmission according to the priority rule of data transmission (that is, the terminal device does not perform side link transmission), the terminal device needs to send a NACK to the network device through the PUCCH.
  • the terminal device since the terminal device discards the side link transmission in the stage of generating the logical channel, the terminal device has not generated the SCI at this time, and therefore cannot determine the side link HARQ-ACK in the PUCCH based on the priority field of the SCI.
  • the terminal device may determine the priority of the side link HARQ-ACK (NACK) in the PUCCH to be equal to the priority of the discarded logical channel.
  • NACK side link HARQ-ACK
  • the embodiment of the present application provides a method for receiving side link feedback information, which is described from a network device, and the same content as the embodiment of the first and second aspects will not be repeated.
  • FIG. 7 is a schematic diagram of a method for receiving side link feedback information according to an embodiment of the present application. As shown in FIG. 7, the method includes:
  • the network device sends downlink control information (DCI) in which the CRC is scrambled by the SL-RNTI or SL-CS-RNTI; wherein the downlink control information indicates a dynamic authorized resource, and the terminal device is scheduled to use the dynamic authorized resource to perform side-by-side operations.
  • DCI downlink control information
  • the network device receives instruction information sent through the physical uplink control channel indicated by the downlink control information.
  • side link transmission is not performed on the dynamic authorized resources scheduled by the downlink control information, and the indication information is used by the terminal device to indicate that the side link transmission is successful or does not require network equipment to schedule retransmission, and The priority of the indication information is pre-configured.
  • the priority of the indication information is pre-configured as the lowest side link priority.
  • the priority of the physical uplink control channel is determined at least according to the priority of the indication information.
  • the physical uplink control channel only carries the indication information; the priority of the physical uplink control channel is equal to the priority of the indication information.
  • the physical uplink control channel carries multiple pieces of feedback information; the priority of the physical uplink control channel is equal to the highest priority of the multiple pieces of feedback information carried by the physical uplink control channel.
  • the new data indication (NDI, new data indication) field of the DCI scrambled by the SL-RNTI is not flipped (NDI does not toggle), and the data of the DCI scrambled by the SL-CS-RNTI is not toggled.
  • the value of the NDI field is 1.
  • Figure 7 above only schematically illustrates the embodiments of the present application, but the present application is not limited thereto.
  • the order of execution among various operations can be appropriately adjusted, and some other operations can be added or some operations can be reduced.
  • Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of FIG. 7 above.
  • the terminal device feeds back indication information (ACK) on the PUCCH associated with the resource without data transmission, and the priority of the indication information is pre-configured.
  • ACK indication information
  • the embodiment of the present application provides an apparatus for sending side link feedback information.
  • the device may be, for example, a terminal device, or may be some or some parts or components configured in the terminal device, and the same content as the embodiments of the first and second aspects will not be repeated.
  • Fig. 8 is a schematic diagram of an apparatus for sending side link feedback information according to an embodiment of the present application.
  • the device 800 for sending side link feedback information includes:
  • the receiving unit 801 receives the downlink control information that the cyclic redundancy check is scrambled by the side link wireless network temporary identification or the side link configuration scheduling wireless network temporary identification; wherein the downlink control information indicates the dynamic authorized resource, and schedules The terminal device uses the dynamic authorized resource to perform the first side link transmission;
  • An indication generating unit 802 which generates first indication information used to indicate that the first side link transmission is successful or does not require network equipment to schedule retransmission, wherein the first indication information is not performed on the dynamic authorized resources scheduled by the downlink control information One side link is sent, and the priority of the first indication information is pre-configured;
  • the sending unit 803 sends the first indication information through the first physical uplink control channel.
  • the device 800 for sending side link feedback information may further include:
  • Priority comparison unit 804 which compares the priorities of channels or signals to determine whether the first physical uplink control channel indicated by the downlink control information can be sent; wherein, the priority of the first physical uplink control channel is at least The priority is determined according to the first indication information.
  • the priority of the first indication information is pre-configured as the lowest side link priority.
  • the first physical uplink control channel only carries the first indication information; the priority of the first physical uplink control channel is equal to the priority of the first indication information.
  • the first physical uplink control channel carries multiple pieces of feedback information; the priority of the first physical uplink control channel is equal to that of the multiple pieces of feedback information carried by the first physical uplink control channel The highest priority.
  • the sending unit 803 is further configured to: use dynamic authorized resources or configure authorized resources and perform second side link transmission through the physical side link control channel and/or the physical side link shared channel;
  • the receiving unit 801 is further configured to: receive second indication information for indicating that the second side link transmission is successful through the physical side link feedback channel;
  • the priority comparing unit 804 is further configured to compare the priorities of channels or signals and determine that the second physical uplink control channel carrying the second indication information cannot be sent.
  • the second side link transmission is performed before the first side link transmission; when the second physical uplink control channel is not transmitted, the downlink control information is transmitted by the network device Sending to schedule the terminal device to perform the first side link sending.
  • the first side link transmission and the second side link transmission have the same hybrid automatic repeat request process identifier.
  • the new data indicating field of the downlink control information scrambled by the side link wireless network temporary identification of the cyclic redundancy check is not overturned, and the cyclic redundancy check is configured to schedule the wireless network by the side link.
  • the value of the new data indication field of the temporary identification scrambled downlink control information is 1.
  • the priority of the second indication information is determined according to the priority indication field in the physical side link control channel.
  • the device 800 for sending side link feedback information may also include other components or modules.
  • the specific content of these components or modules reference may be made to related technologies.
  • FIG. 8 only exemplarily shows the connection relationship or signal direction between the various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used.
  • the foregoing components or modules may be implemented by hardware facilities such as a processor, a memory, a transmitter, and a receiver; the implementation of this application does not limit this.
  • the terminal device feeds back indication information (ACK) on the PUCCH associated with the resource without data transmission, and the priority of the indication information is pre-configured.
  • ACK indication information
  • the embodiment of the present application provides an apparatus for receiving side link feedback information.
  • the apparatus may be, for example, a network device, or may be some or some components or components configured in the network device, and the same content as the embodiment of the third aspect will not be repeated.
  • FIG. 9 is a schematic diagram of an apparatus for receiving side link feedback information according to an embodiment of the present application.
  • the receiving device 900 of side link feedback information includes:
  • the sending unit 901 which sends the downlink control information that the cyclic redundancy check is scrambled by the side link wireless network temporary identification or the side link configuration scheduling wireless network temporary identification; wherein the downlink control information indicates the dynamic authorized resource, and the scheduling The terminal device uses the dynamic authorized resource to perform side link transmission; and
  • a receiving unit 902 which receives the indication information sent through the physical uplink control channel indicated by the downlink control information
  • side link transmission is not performed on the dynamic authorized resources scheduled by the downlink control information, and the indication information is used by the terminal device to indicate that the side link transmission is successful or does not require network equipment to schedule retransmission, and The priority of the indication information is pre-configured.
  • the priority of the indication information is pre-configured as the lowest side link priority.
  • the priority of the physical uplink control channel is determined at least according to the priority of the indication information.
  • the physical uplink control channel only carries the indication information; the priority of the physical uplink control channel is equal to the priority of the indication information.
  • the physical uplink control channel carries multiple pieces of feedback information; the priority of the physical uplink control channel is equal to the highest priority of the multiple pieces of feedback information carried by the physical uplink control channel.
  • the device 900 for receiving side link feedback information may also include other components or modules.
  • the specific content of these components or modules reference may be made to related technologies.
  • FIG. 9 only exemplarily shows the connection relationship or signal direction between the various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used.
  • the foregoing components or modules may be implemented by hardware facilities such as a processor, a memory, a transmitter, and a receiver; the implementation of this application does not limit this.
  • the terminal device feeds back indication information (ACK) on the PUCCH associated with the resource without data transmission, and the priority of the indication information is pre-configured.
  • ACK indication information
  • An embodiment of the present application also provides a communication system, which may refer to FIG. 1, and the same content as the embodiments of the first aspect to the fourth aspect will not be repeated.
  • the communication system may include:
  • Terminal equipment which receives the downlink control information scrambled by the cyclic redundancy check by the side link wireless network temporary identification or the side link configuration scheduling wireless network temporary identification; generating to indicate that the side link transmission is successful or does not require network equipment Indication information for scheduling retransmission; and sending the indication information through the physical uplink control channel; and
  • a network device that sends the downlink control information and receives the instruction information
  • the downlink control information indicates a dynamic authorized resource
  • the terminal device is scheduled to use the dynamic authorized resource to perform the side link transmission; the dynamic authorized resource scheduled by the downlink control information is not performed Side link transmission, and the priority of the indication information is pre-configured.
  • the embodiments of the present application also provide a network device, which may be a base station, for example, but the present application is not limited to this, and may also be other network devices.
  • a network device which may be a base station, for example, but the present application is not limited to this, and may also be other network devices.
  • FIG. 10 is a schematic diagram of the structure of a network device according to an embodiment of the present application.
  • the network device 1000 may include: a processor 1010 (for example, a central processing unit CPU) and a memory 1020; the memory 1020 is coupled to the processor 1010.
  • the memory 1020 can store various data; in addition, it also stores an information processing program 1030, and the program 1030 is executed under the control of the processor 1010.
  • the processor 1010 may be configured to execute a program to implement the method for receiving side link feedback information as described in the embodiment of the third aspect.
  • the processor 1610 may be configured to perform the following control: transmit the downlink control information that the cyclic redundancy check is scrambled by the side link wireless network temporary identification or the side link configuration scheduling wireless network temporary identification; The indication information sent by the physical uplink control channel indicated by the control information; wherein, side link transmission is not performed on the dynamic authorized resources scheduled by the downlink control information, and the indication information is used by the terminal device to indicate the side link
  • the transmission is successful or does not require network equipment to schedule retransmission, and the priority of the indication information is pre-configured.
  • the network device 1000 may further include: a transceiver 1040, an antenna 1050, etc.; wherein the functions of the above-mentioned components are similar to those of the prior art, and will not be repeated here. It is worth noting that the network device 1000 does not necessarily include all the components shown in FIG. 10; in addition, the network device 1000 may also include components not shown in FIG. 10, and the prior art can be referred to.
  • the embodiments of the present application also provide a terminal device, but the present application is not limited to this, and may also be other devices.
  • Fig. 11 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • the terminal device 1100 may include a processor 1110 and a memory 1120; the memory 1120 stores data and programs, and is coupled to the processor 1110. It is worth noting that this figure is exemplary; other types of structures can also be used to supplement or replace this structure to achieve telecommunication functions or other functions.
  • the processor 1110 may be configured to execute a program to implement the method for sending side link feedback information as described in the embodiments of the first and second aspects.
  • the processor 1110 may be configured to perform the following control: receive the downlink control information that the cyclic redundancy check is scrambled by the side link wireless network temporary identification or the side link configuration scheduling wireless network temporary identification;
  • the side link transmission is the first indication information that is successful or does not require network equipment to schedule retransmission, wherein the first side link transmission is not performed on the dynamic authorized resources scheduled by the downlink control information, and the first indication
  • the priority of the information is pre-configured; and the first indication information is sent through the first physical uplink control channel indicated by the downlink control information.
  • the terminal device 1100 may further include: a communication module 1130, an input unit 1140, a display 1150, and a power supply 1160. Among them, the functions of the above-mentioned components are similar to those of the prior art, and will not be repeated here. It is worth noting that the terminal device 1100 does not necessarily include all the components shown in FIG. 11, and the above-mentioned components are not necessary; in addition, the terminal device 1100 may also include components not shown in FIG. There is technology.
  • An embodiment of the present application also provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the sending of side link feedback information described in the embodiments of the first and second aspects. method.
  • An embodiment of the present application also provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the side link feedback information sending method described in the embodiments of the first and second aspects.
  • An embodiment of the present application further provides a computer program, wherein when the program is executed in a network device, the program causes the network device to execute the side link feedback information receiving method described in the embodiment of the third aspect.
  • An embodiment of the present application also provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the side link feedback information receiving method described in the embodiment of the third aspect.
  • the above devices and methods of this application can be implemented by hardware, or can be implemented by hardware combined with software.
  • This application relates to such a computer-readable program, when the program is executed by a logic component, the logic component can realize the above-mentioned device or constituent component, or the logic component can realize the above-mentioned various methods Or steps.
  • This application also relates to storage media used to store the above programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memory, etc.
  • the method/device described in conjunction with the embodiments of the present application may be directly embodied as hardware, a software module executed by a processor, or a combination of the two.
  • one or more of the functional block diagrams and/or one or more combinations of the functional block diagrams shown in the figure may correspond to each software module of the computer program flow or each hardware module.
  • These software modules can respectively correspond to the steps shown in the figure.
  • These hardware modules can be implemented by solidifying these software modules by using a field programmable gate array (FPGA), for example.
  • FPGA field programmable gate array
  • the software module can be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other form of storage medium known in the art.
  • a storage medium may be coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be a component of the processor.
  • the processor and the storage medium may be located in the ASIC.
  • the software module can be stored in the memory of the mobile terminal, or can be stored in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • One or more of the functional blocks and/or one or more combinations of the functional blocks described in the drawings can be implemented as general-purpose processors, digital signal processors (DSPs) for performing the functions described in this application. ), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any appropriate combination thereof.
  • DSPs digital signal processors
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks described in the drawings and/or one or more combinations of the functional blocks can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, and multiple micro-processing Processor, one or more microprocessors in communication with the DSP, or any other such configuration.
  • a method for sending side link feedback information including:
  • the terminal device receives the downlink control information (DCI) scrambled by the cyclic redundancy check (CRC) by the side link wireless network temporary identification (SL-RNTI) or the side link configuration scheduling wireless network temporary identification (SL-CS-RNTI) , Wherein the downlink control information indicates a dynamic authorized resource, and the terminal device is scheduled to use the dynamic authorized resource to perform first side link transmission;
  • DCI downlink control information
  • CRC cyclic redundancy check
  • SL-RNTI side link wireless network temporary identification
  • SL-CS-RNTI side link configuration scheduling wireless network temporary identification
  • the priority of the channel or signal is compared to determine whether the first physical uplink control channel indicated by the downlink control information can be sent; wherein the priority of the first physical uplink control channel is at least based on the first indication information The priority is determined.
  • the first physical uplink control channel carrying the first indication information is not sent.
  • Supplement 4 The method according to Supplement 2, wherein the method further includes:
  • a channel or signal overlapping with the first physical uplink control channel is sent.
  • Supplement 5 The method according to any one of Supplements 1 to 4, wherein the priority of the first indication information is pre-configured as the lowest side link priority.
  • Supplement 6 The method according to any one of Supplements 1 to 5, wherein the first physical uplink control channel only carries the first indication information.
  • Appendix 7 According to the method described in Appendix 6, the priority of the first physical uplink control channel is equal to the priority of the first indication information.
  • Supplement 8 The method according to any one of Supplements 1 to 7, wherein the first physical uplink control channel carries multiple pieces of feedback information including the first indication information.
  • Appendix 9 The method according to Appendix 8, wherein the priority of the first physical uplink control channel is equal to the highest priority of the multiple feedback information carried by the first physical uplink control channel .
  • Supplement 10 The method according to any one of Supplements 1 to 10, wherein the method further comprises:
  • the terminal device uses dynamic authorized resources or configures authorized resources and performs second side link transmission through a physical side link control channel and/or a physical side link shared channel;
  • Supplement 11 The method according to Supplement 10, wherein the terminal device performs the second side link transmission before the first side link transmission;
  • the downlink control information is sent by the network device to schedule the terminal device to perform the first side link transmission.
  • Supplement 12 The method according to Supplement 10 or 11, wherein the first side link transmission and the second side link transmission have the same hybrid automatic repeat request process identifier.
  • Supplement 13 The method according to any one of Supplements 10 to 12, wherein the priority of the second indication information is determined according to the priority indication field in the physical side link control channel.
  • Appendix 14 The method according to any one of appendices 1 to 13, wherein the new data indication (NDI, new data indication) field of the DCI scrambled by the SL-RNTI is not flipped (NDI does not toggle)
  • the value of the NDI field of the DCI scrambled by the SL-CS-RNTI is 1.
  • a method for sending side link feedback information including:
  • the terminal device receives the downlink control information (DCI) scrambled by the cyclic redundancy check (CRC) by the side link wireless network temporary identification (SL-RNTI) or the side link configuration scheduling wireless network temporary identification (SL-CS-RNTI) , Wherein the downlink control information indicates a dynamic authorized resource, and the terminal device is scheduled to use the dynamic authorized resource to perform first side link transmission;
  • DCI downlink control information
  • CRC cyclic redundancy check
  • SL-RNTI side link wireless network temporary identification
  • SL-CS-RNTI side link configuration scheduling wireless network temporary identification
  • Supplement 16 The method according to Supplement 15, wherein the method further includes:
  • the priority of the channel or signal is compared to determine whether the first physical uplink control channel indicated by the downlink control information can be sent; wherein the priority of the first physical uplink control channel is at least based on the first indication information The priority is determined.
  • Supplement 17 The method according to Supplement 15 or 16, wherein the method further includes:
  • the first indication information is sent through the first physical uplink control channel.
  • Supplement 18 The method according to Supplement 15 or 16, wherein the method further includes:
  • the first physical uplink control channel carrying the first indication information is not sent.
  • Attachment 19 A method for sending side link feedback information, including:
  • the terminal device generates an indication message (NACK) indicating that the side link transmission is unsuccessful; wherein the side link data sent by the side link is not sent;
  • NACK indication message
  • the terminal device sends the indication information (NACK) through a physical uplink control channel; wherein the priority of the indication information is equal to the priority of the logical channel of the side link data.
  • a method for receiving side link feedback information including:
  • the network device sends cyclic redundancy check (CRC) downlink control information (DCI) scrambled by side link wireless network temporary identification (SL-RNTI) or side link configuration scheduling wireless network temporary identification (SL-CS-RNTI) ; Wherein, the downlink control information indicates a dynamic authorized resource, and the terminal device is scheduled to use the dynamic authorized resource for side link transmission; and
  • CRC cyclic redundancy check
  • DCI downlink control information
  • SL-RNTI side link wireless network temporary identification
  • SL-CS-RNTI side link configuration scheduling wireless network temporary identification
  • the dynamic authorized resource scheduled by the downlink control information is not used by the terminal device for the side link transmission, and the indication information is used by the terminal device to indicate whether the side link transmission is successful or not.
  • the network device is required to schedule retransmission, and the priority of the indication information is pre-configured.
  • Supplement 21 The method according to Supplement 20, wherein the priority of the indication information is pre-configured as the lowest side link priority.
  • Supplement 22 The method according to Supplement 20 or 21, wherein the priority of the physical uplink control channel is determined at least according to the priority of the indication information.
  • Supplement 23 The method according to any one of Supplements 20 to 22, wherein the first physical uplink control channel only carries the first indication information.
  • Supplement 24 The method according to Supplement 23, wherein the priority of the physical uplink control channel is equal to the priority of the indication information.
  • Supplement 25 The method according to any one of Supplements 20 to 24, wherein the physical uplink control channel carries multiple pieces of feedback information.
  • Supplement 26 The method according to Supplement 21, wherein the priority of the physical uplink control channel is equal to the highest priority of the multiple feedback information carried by the physical uplink control channel.
  • Supplement 27 The method according to any one of Supplements 20 to 26, wherein the new data indication (NDI, new data indication) field of the DCI scrambled by SL-RNTI is not flipped (NDI does not toggle)
  • the value of the NDI field of the DCI scrambled by the SL-CS-RNTI is 1.
  • a terminal device comprising a memory and a processor, the memory storing a computer program, and the processor is configured to execute the computer program to implement the side described in any one of Supplements 1 to 20 Sending method of link feedback information.
  • Appendix 29 A network device including a memory and a processor, the memory storing a computer program, and the processor is configured to execute the computer program to implement the side described in any one of appendix 21 to 27 The method of receiving link feedback information.

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Abstract

本申请实施例提供一种边链路反馈信息的发送和接收方法以及装置；所述方法包括：终端设备接收CRC被SL-RNTI或SL-CS-RNTI加扰的下行控制信息；生成用于指示第一边链路发送为成功或不需要网络设备调度重传的第一指示信息，其中在所述下行控制信息调度的动态授权资源上未进行所述第一边链路发送，并且所述第一指示信息的优先级被预先配置；以及通过所述下行控制信息指示的第一物理上行控制信道发送所述第一指示信息。

Description

边链路反馈信息的发送和接收方法以及装置 技术领域
本申请实施例涉及通信技术领域。
背景技术
V2X(Vehicle to Everything)是一种车辆通信技术，相比于使用Uu链路(包括上行链路和下行链路)的蜂窝通信，V2X的发送终端设备通过边链路(sidelink)与接收终端设备直接进行通信。
新无线(NR，New Radio)V2X是5G NR的重要项目，相比于长期演进(LTE，Long Term Evolution)V2X，NR V2X需要支持诸多新场景和新业务，并且需要满足更高的技术指标。
NR V2X定义了几种物理信道，包括物理边链路控制信道(PSCCH，Physical Sidelink Control Channel)、物理边链路共享信道(PSSCH，Physical Sidelink Shared Channel)和物理边链路反馈信道(PSFCH，Physical Sidelink Feedback Channel)，分别用于承载边链路控制信息(SCI，Sidelink Control Information)、边链路数据和边链路反馈信息(例如HARQ-ACK)。
NR V2X定义了两种工作模式。对于NR V2X模式1(Mode 1)，终端设备用于V2X通信的时频资源(简称为资源)由网络设备(例如基站)通过NR Uu链路进行调度和分配，并且终端设备可以通过物理上行控制信道(PUCCH，Physical Uplink Control Channel)向网络设备反馈ACK/NACK。对于NR V2X模式2(Mode 2)，终端设备可以基于感知(sensing)结果，自主地对用于V2X通信的时频资源进行选择。
模式1(Mode 1)又包括动态授权(DG，dynamic grant)和配置授权(CG，configured grant，或称为免授权)两种方式。终端设备可以使用动态授权资源或者配置授权资源进行边链路发送(包括初传或重传)。
对于动态授权，网络设备通过物理下行控制信道(PDCCH，Physical Downlink Control Channel)或下行控制信息(DCI，Downlink Control Information)调度边链路资源。对于配置授权，网络设备通过无线资源控制(RRC，Radio Resource Control)信令配置周期性的边链路资源，终端设备可以直接使用配置的资源进行PSSCH发送， 而无需通过调度请求(SR，Scheduling Request)向网络设备请求边链路资源。
终端设备可以通过接收PSFCH获得PSSCH的ACK/NACK信息，并将PSFCH承载的边链路ACK/NACK信息通过PUCCH发送给网络设备。对于动态授权，网络设备通过PDCCH指示PUCCH资源。对于配置授权，配置授权的每个周期可以通过RRC配置PUCCH资源。
无论对于动态授权还是配置授权，在接收到PUCCH承载的NACK后，网络设备可以使用动态授权(通过PDCCH)调度边链路重传，并可以在PDCCH中指示与重传资源相关联的PUCCH资源。如果在PUCCH上继续接收到NACK，则网络设备可以继续调度重传，网络设备可以自主决定重传调度的最大次数。
应该注意，上面对技术背景的介绍只是为了方便对本申请的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本申请的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
发明人发现：终端设备有可能会在发送承载边链路HARQ-ACK的PUCCH时也需要同时进行边链路发送。由于终端设备具有最大发射功率限制，终端设备会进行优先级比较，根据优先级比较结果决定丢弃优先级较低的一方，即，终端设备或者丢弃PUCCH发送，或者丢弃边链路发送，从而使得发射功率不超过最大功率限制。
当上述优先级比较过程导致承载边链路ACK的PUCCH被丢弃时，网络设备会由于没有接收到任何ACK/NACK而持续调度边链路重传，然而，由于终端设备已经在物理边链路反馈信道上接收到ACK，此时并没有数据需要发送，因此网络设备调度的重传是完全不必要的。由于这些被调度的重传资源无法被任何设备所利用，这会带来无谓的资源浪费。
针对上述问题的至少之一，本申请实施例提供一种边链路反馈信息的发送和接收方法及装置。
根据本申请实施例的一个方面，提供一种边链路反馈信息的发送方法，包括：
终端设备接收循环冗余校验被边链路无线网络临时标识或边链路配置调度无线网络临时标识加扰的下行控制信息；其中，所述下行控制信息指示动态授权资源，并调度终端设备使用所述动态授权资源进行第一边链路发送；
生成用于指示所述第一边链路发送为成功或不需要网络设备调度重传的第一指示信息，其中在所述下行控制信息调度的动态授权资源上未进行所述第一边链路发送，并且所述第一指示信息的优先级被预先配置；以及
通过所述下行控制信息指示的第一物理上行控制信道发送所述第一指示信息。
根据本申请实施例的另一个方面，提供一种边链路反馈信息的发送装置，包括：
接收单元，其接收循环冗余校验被边链路无线网络临时标识或边链路配置调度无线网络临时标识加扰的下行控制信息；其中，所述下行控制信息指示动态授权资源，并调度终端设备使用所述动态授权资源进行第一边链路发送；
指示生成单元，其生成用于指示所述第一边链路发送为成功或不需要网络设备调度重传的第一指示信息，其中在所述下行控制信息调度的动态授权资源上未进行所述第一边链路发送，并且所述第一指示信息的优先级被预先配置；以及
发送单元，其通过所述下行控制信息指示的第一物理上行控制信道发送所述第一指示信息。
根据本申请实施例的另一个方面，提供一种边链路反馈信息的接收方法，包括：
网络设备发送循环冗余校验被边链路无线网络临时标识或边链路配置调度无线网络临时标识加扰的下行控制信息；其中，所述下行控制信息指示动态授权资源，并调度终端设备使用所述动态授权资源进行边链路发送；以及
接收通过所述下行控制信息所指示的物理上行控制信道发送的指示信息；
其中，在所述下行控制信息调度的动态授权资源上未进行所述边链路发送，所述指示信息被终端设备用于指示所述边链路发送为成功或不需要网络设备调度重传，并且所述指示信息的优先级被预先配置。
根据本申请实施例的另一个方面，提供一种边链路反馈信息的接收装置，包括：
发送单元，其发送循环冗余校验被边链路无线网络临时标识或边链路配置调度无线网络临时标识加扰的下行控制信息；其中，所述下行控制信息指示动态授权资源，并调度终端设备使用所述动态授权资源进行边链路发送；以及
接收单元，其接收通过所述下行控制信息所指示的物理上行控制信道发送的指示信息；
其中，在所述下行控制信息调度的动态授权资源上未进行所述边链路发送，所述指示信息被终端设备用于指示所述边链路发送为成功或不需要网络设备调度重传，并 且所述指示信息的优先级被预先配置。
本申请实施例的有益效果之一在于：终端设备在没有数据发送的资源所关联的PUCCH上反馈指示信息(ACK)，该指示信息的优先级被预先配置。由此，可以减少或避免网络设备错误地持续调度资源，减少边链路资源的浪费。
参照后文的说明和附图，详细公开了本申请的特定实施方式，指明了本申请的原理可以被采用的方式。应该理解，本申请的实施方式在范围上并不因而受到限制。在所附权利要求的精神和条款的范围内，本申请的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
在本申请实施例的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
图1是本申请实施例的通信系统的示意图；
图2是本申请实施例的反馈信息发送的一示例图；
图3是本申请实施例的边链路反馈信息的发送方法的一示意图；
图4是本申请实施例的边链路反馈信息的发送和接收方法的一示意图；
图5是本申请实施例的反馈信息发送的另一示例图；
图6是本申请实施例的优先级比较的一示意图；
图7是本申请实施例的边链路反馈信息的接收方法的一示意图；
图8是本申请实施例的边链路反馈信息的发送装置的一示意图；
图9是本申请实施例的边链路反馈信息的接收装置的一示意图；
图10是本申请实施例的网络设备的示意图；
图11是本申请实施例的终端设备的示意图。
具体实施方式
参照附图，通过下面的说明书，本申请的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本申请的特定实施方式，其表明了其中可以采用本申请的原则的部分实施方式，应了解的是，本申请不限于所描述的实施方式，相反，本申请包括落入所附权利要求的范围内的全部修改、变型以及等同物。
在本申请实施例中，术语“第一”、“第二”等用于对不同元素从称谓上进行区分，但并不表示这些元素的空间排列或时间顺序等，这些元素不应被这些术语所限制。术语“和/或”包括相关联列出的术语的一种或多个中的任何一个和所有组合。术语“包含”、“包括”、“具有”等是指所陈述的特征、元素、元件或组件的存在，但并不排除存在或添加一个或多个其他特征、元素、元件或组件。
在本申请实施例中，单数形式“一”、“该”等包括复数形式，应广义地理解为“一种”或“一类”而并不是限定为“一个”的含义；此外术语“所述”应理解为既包括单数形式也包括复数形式，除非上下文另外明确指出。此外术语“根据”应理解为“至少部分根据……”，术语“基于”应理解为“至少部分基于……”，除非上下文另外明确指出。
在本申请实施例中，术语“通信网络”或“无线通信网络”可以指符合如下任意通信标准的网络，例如长期演进(LTE，Long Term Evolution)、增强的长期演进(LTE-A，LTE-Advanced)、宽带码分多址接入(WCDMA，Wideband Code Division Multiple Access)、高速报文接入(HSPA，High-Speed Packet Access)等等。
并且，通信系统中设备之间的通信可以根据任意阶段的通信协议进行，例如可以包括但不限于如下通信协议：1G(generation)、2G、2.5G、2.75G、3G、4G、4.5G以及5G、新无线(NR，New Radio)等等，和/或其他目前已知或未来将被开发的通信协议。
在本申请实施例中，术语“网络设备”例如是指通信系统中将终端设备接入通信网络并为该终端设备提供服务的设备。网络设备可以包括但不限于如下设备：基站(BS，Base Station)、接入点(AP、Access Point)、发送接收点(TRP，Transmission Reception Point)、广播发射机、移动管理实体(MME、Mobile Management Entity)、网关、服务器、无线网络控制器(RNC，Radio Network Controller)、基站控制器(BSC，Base Station Controller)等等。
其中，基站可以包括但不限于：节点B(NodeB或NB)、演进节点B(eNodeB 或eNB)以及5G基站(gNB)，等等，此外还可包括远端无线头(RRH，Remote Radio Head)、远端无线单元(RRU，Remote Radio Unit)、中继(relay)或者低功率节点(例如femeto、pico等等)。并且术语“基站”可以包括它们的一些或所有功能，每个基站可以对特定的地理区域提供通信覆盖。术语“小区”可以指的是基站和/或其覆盖区域，这取决于使用该术语的上下文。
在本申请实施例中，术语“用户设备”(UE，User Equipment)或者“终端设备”(TE，Terminal Equipment或Terminal Device)例如是指通过网络设备接入通信网络并接收网络服务的设备。终端设备可以是固定的或移动的，并且也可以称为移动台(MS，Mobile Station)、终端、用户台(SS，Subscriber Station)、接入终端(AT，Access Terminal)、站，等等。
其中，终端设备可以包括但不限于如下设备：蜂窝电话(Cellular Phone)、个人数字助理(PDA，Personal Digital Assistant)、无线调制解调器、无线通信设备、手持设备、机器型通信设备、膝上型计算机、无绳电话、智能手机、智能手表、数字相机，等等。
再例如，在物联网(IoT，Internet of Things)等场景下，终端设备还可以是进行监控或测量的机器或装置，例如可以包括但不限于：机器类通信(MTC，Machine Type Communication)终端、车载通信终端、设备到设备(D2D，Device to Device)终端、机器到机器(M2M，Machine to Machine)终端，等等。
此外，术语“网络侧”或“网络设备侧”是指网络的一侧，可以是某一基站，也可以包括如上的一个或多个网络设备。术语“用户侧”或“终端侧”或“终端设备侧”是指用户或终端的一侧，可以是某一UE，也可以包括如上的一个或多个终端设备。本文在没有特别指出的情况下，“设备”可以指网络设备，也可以指终端设备。
以下通过示例对本申请实施例的场景进行说明，但本申请不限于此。
图1是本申请实施例的通信系统的示意图，示意性说明了以终端设备和网络设备为例的情况，如图1所示，通信系统100可以包括网络设备101和终端设备102、103。为简单起见，图1仅以两个终端设备和一个网络设备为例进行说明，但本申请实施例不限于此。
在本申请实施例中，网络设备101和终端设备102、103之间可以进行现有的业务或者未来可实施的业务发送。例如，这些业务可以包括但不限于：增强的移动宽带 (eMBB，enhanced Mobile Broadband)、大规模机器类型通信(mMTC，massive Machine Type Communication)和高可靠低时延通信(URLLC，Ultra-Reliable and Low-Latency Communication)，等等。
值得注意的是，图1示出了两个终端设备102、103均处于网络设备101的覆盖范围内，但本申请不限于此。两个终端设备102、103可以均不在网络设备101的覆盖范围内，或者一个终端设备102在网络设备101的覆盖范围之内而另一个终端设备103在网络设备101的覆盖范围之外。
在本申请实施例中，两个终端设备102、103之间可以进行边链路发送。例如，两个终端设备102、103可以都在网络设备101的覆盖范围之内进行边链路发送以实现V2X通信，也可以都在网络设备101的覆盖范围之外进行边链路发送以实现V2X通信，还可以一个终端设备102在网络设备101的覆盖范围之内而另一个终端设备103在网络设备101的覆盖范围之外进行边链路发送以实现V2X通信。
在本申请实施例中，终端设备102和/或103可以由网络设备分配边链路资源(即采用Mode 1)。当然，本申请实施例也可以将自主选择边链路资源(即采用Mode 2)和由网络设备分配边链路资源(即采用Mode 1)结合起来；本申请实施例不对此进行限制。
对于动态授权，网络设备通过PDCCH调度边链路资源，该PDCCH的循环冗余校验(CRC，Cyclic Redundancy Check)由边链路无线网络临时标识(SL-RNTI，Sideline Radio Network Temporary Identifier)加扰。对于配置授权，每个周期可以通过RRC配置一个发送PUCCH的机会，根据PUCCH承载的ACK/NACK，网络设备可以使用动态授权(通过PDCCH)调度重传资源，并可以在PDCCH中指示与该重传资源相关联的PUCCH资源，该PDCCH的CRC由边链路配置调度无线网络临时标识(SL-CS-RNTI，Sideline Configured Scheduling Radio Network Temporary Identifier)加扰。
为简单起见，以下将配置授权中通过RRC配置的PSCCH/PSSCH资源称为配置授权资源，将配置授权中由网络设备调度的PSCCH/PSSCH资源称为动态授权资源。
PUCCH的优先级被定义为PUCCH所承载的所有边链路HARQ-ACK中最高的优先级。对于某一承载在PUCCH中的边链路HARQ-ACK，其优先级等于它所关联PSFCH的优先级，也等于它所关联的PSSCH的优先级。
更具体地，对于针对某一PSSCH的HARQ-ACK，其被PSFCH承载，也被PUCCH承载，因此，上述PUCCH中的HARQ-ACK、PSFCH和PSSCH三者之间是具有关联关系的，该PSSCH(PSFCH)即为上述HARQ-ACK所关联的PSSCH(PSFCH)，三者的优先级相同。对于某一PSSCH，调度该PSSCH的PSCCH(SCI)中有一个优先级字段，该字段所指示的优先级即为PSSCH的优先级。
因此，对于某一承载在PUCCH中的边链路HARQ-ACK，其优先级实际上来源于SCI的优先级字段所指示的优先级。对于边链路发送，如前所述，PSCCH、PSSCH和PSFCH的优先级都可以归结为来源于SCI的优先级字段所指示的优先级。对于边链路的同步信号块(SSB，Synchronization Signal Block)和信道状态信息(CSI，Channel State Information)，其优先级是(预)配置的。因此，PUCCH的优先级可以与边链路传输的优先级直接进行比较。
但是，当上述优先级比较过程导致承载边链路ACK的PUCCH被丢弃时，网络设备会由于没有接收到任何ACK/NACK而持续调度边链路重传，然而，由于终端设备已经接收到ACK，终端设备此时并没有数据需要发送，因此网络设备调度的重传是完全不必要的。由于这些被调度的重传资源无法被任何设备所利用，这会带来无谓的资源浪费。
图2是本申请实施例的反馈信息发送的一示例图。如图2所示，基站通过授权#0(grant#0)为终端设备分配了用于PSCCH/PSSCH发送的资源(PSSCH#0，等等)，并分配了PUCCH资源(PUCCH#0)。其中，grant#0可以是动态授权，也可以是配置授权。动态授权基于DCI的调度；配置授权基于RRC配置。
如图2所示，终端设备在发送PSSCH#0后，在PSFCH上接收到了ACK，因此终端设备无需在PSSCH#0之后的PSSCH资源上继续发送重传。终端设备本应在PUCCH#0上发送ACK，然而，由于PUCCH#0在时间上与其他边链路发送和/或上行发送发生重叠，并且PUCCH#0的优先级较低，因此终端设备丢弃了PUCCH#0，即终端设备没有在PUCCH#0上进行任何发送。
相应地，基站没有在PUCCH#0上接收到任何ACK或NACK，这对于基站而言实际上是非连续传输(DTX，Discontinuous Transmission)，因此基站可能会认为之前grant#0为终端设备分配的资源不够理想，从而继续调度终端设备进行重传。文中的初传和重传都是针对同一个HARQ process，即针对同一个传输块(TB，Transmission  Block)。
如图2所示，基站通过DCI调度了动态授权#1(dynamic grant#1)，又为终端设备分配了重传资源和PUCCH资源。然而，由于终端设备之前已经在PSFCH接收到了ACK，终端设备可能已经清空了缓存(buffer)，因此没有数据需要发送。如果对此时终端设备行为不做任何规定，终端设备将发现不满足发送条件，因此不会在dynamic grant#1分配的PSSCH资源和PUCCH资源上进行任何发送。
由于终端设备没有在PUCCH#1上向基站上报HARQ-ACK，基站会仍然将其认为是DTX，因而继续调度动态授权#2(dynamic grant#2)。同理，由于终端设备仍然不会在PUCCH上发送HARQ-ACK，基站可能会继续调度dynamic grant#3、dynamic grant#4等，然而，这些持续调度的重传都是没有必要的，所分配的重传资源无法被任何设备所利用，因此会造成很大的资源浪费。本申请实施例对此提供相应的解决方案。
在本申请实施例中，以V2X为例对边链路进行说明，但本申请不限于此，还可以适用于V2X以外的边链路发送场景。在以下的说明中，在不引起混淆的情况下，术语“边链路”和“V2X”可以互换，术语“PSFCH”和“边链路反馈信道”可以互换，术语“PSCCH”和“边链路控制信道”或“边链路控制信息”可以互换，术语“PSSCH”和“边链路数据信道”或“边链路数据”也可以互换。另外，发送(transmitting)或接收(receiving)PSSCH可以理解为发送或接收由PSSCH承载的边链路数据；发送或接收PSFCH可以理解为发送或接收由PSFCH承载的边链路反馈信息。
第一方面的实施例
本申请实施例提供一种边链路反馈信息的发送方法，从终端设备进行说明。其中该终端设备(可称为发送终端设备)作为业务数据的发送方，向一个或多个其他终端设备(可称为接收终端设备)发送边链路数据。该终端设备(可称为发送终端设备)可以接收网络设备的动态授权，并向网络设备发送反馈信息。
图3是本申请实施例的边链路反馈信息的发送方法的一示意图，如图3所示，该方法包括：
301，终端设备接收CRC被SL-RNTI或SL-CS-RNTI加扰的下行控制信息(DCI)；其中，所述下行控制信息指示动态授权资源，并调度终端设备使用所述动态授权资源 进行第一边链路发送；
302，终端设备生成用于指示第一边链路发送为成功或不需要网络设备调度重传的第一指示信息，其中在所述下行控制信息调度的动态授权资源上未进行所述第一边链路发送，并且所述第一指示信息的优先级被预先配置；以及
303，终端设备通过所述下行控制信息指示的第一物理上行控制信道发送所述第一指示信息。
值得注意的是，以上附图3仅对本申请实施例进行了示意性说明，但本申请不限于此。例如可以适当地调整各个操作之间的执行顺序，此外还可以增加其他的一些操作或者减少其中的某些操作。本领域的技术人员可以根据上述内容进行适当地变型，而不仅限于上述附图3的记载。
在一些实施例中，通过物理边链路控制信道和/或物理边链路共享信道进行边链路发送，关于边链路发送和接收的具体内容可以参考相关技术。
由此，终端设备在没有数据发送的资源所关联的PUCCH上反馈指示信息(ACK)，该指示信息的优先级被预先配置。由此，可以减少或避免网络设备错误地持续调度资源，减少边链路资源的浪费。
图4是本申请实施例的边链路反馈信息的发送和接收方法的一示意图，如图4所示，该方法包括：
401，终端设备使用动态授权资源或者配置授权资源并通过PSCCH和/或PSSCH进行第二边链路发送；
402，终端设备通过PSFCH接收用于指示所述第二边链路发送为成功的第二指示信息(ACK)；以及
403，终端设备进行信道或信号的优先级比较并确定承载所述第二指示信息的第二PUCCH不能够被发送。
如图4所示，该方法还包括：
404，终端设备接收CRC被SL-RNTI或SL-CS-RNTI加扰的下行控制信息(DCI)；其中，所述下行控制信息指示动态授权资源，并调度终端设备使用所述动态授权资源并通过物理边链路控制信道和/或物理边链路共享信道进行第一边链路发送；
405，终端设备生成用于指示第一边链路发送为成功或不需要网络设备调度重传的第一指示信息，其中在所述下行控制信息调度的动态授权资源上未进行所述第一边 链路发送，并且所述第一指示信息的优先级被预先配置；
在一些实施例中，当所述第一物理上行控制信道与其他的上行发送或者边链路发送重叠的情况下，还可以进行信道或信号的优先级比较。当然，如果没有时频资源重叠的情况，可以不进行信道或信号的优先级比较。
在一些实施例中，如图4所示，该方法还包括：
406，终端设备确定所述下行控制信息指示的第一物理上行控制信道能够被发送；
407，终端设备通过所述第一物理上行控制信道发送所述第一指示信息。
在一些实施例中，终端设备确定所述下行控制信息指示的第一物理上行控制信道不能够被发送，在这种情况下，终端设备不发送承载所述第一指示信息的所述第一物理上行控制信道，例如，终端设备发送与所述第一物理上行控制信道重叠的信号或信号，该信道或信号可以是上行发送或者边链路发送。
值得注意的是，以上附图4仅对本申请实施例进行了示意性说明，但本申请不限于此。例如可以适当地调整各个操作之间的执行顺序，此外还可以增加其他的一些操作或者减少其中的某些操作。本领域的技术人员可以根据上述内容进行适当地变型，而不仅限于上述附图4的记载。
在本申请实施例中，例如，当终端设备接收到某一来自基站的dynamic grant，并且该dynamic grant调度了PSSCH资源和PUCCH资源，如果终端设备没有在dynamic grant所调度的任何PSSCH资源上进行边链路发送，则终端设备在dynamic grant调度的PUCCH上向基站发送ACK。在该ACK发送与其他边链路发送或上行发送在时间上发生重叠，并且需要进行优先级比较并丢弃某些发送时，该ACK被认为具有最低的边链路优先级。
图5是本申请实施例的反馈信息发送的一示例图，假设与图2相同，不再赘述。如图5所示，终端设备在接收到dynamic grant#1后，发现没有数据需要发送，则终端设备不在dynamic grant#1分配的PSSCH资源上进行边链路发送，但终端设备会在dynamic grant#1分配的PUCCH资源(PUCCH#1)上发送ACK给基站，即通知基站不需要继续调度重传。基站接收到ACK，则不会继续调度重传，即不会继续调度dynamic grant#2，从而不会发生持续调度不必要的重传这一问题。
终端设备没有在dynamic grant#0调度的PUCCH#0上发送ACK，但终端设备也不需要将这一ACK结果记录保存到在PUCCH#1上发送的时刻。与之相反，终端设 备在接收到dynamic grant#1后，发现没有数据需要发送，即可在PUCCH#1上发送ACK，而不需要终端设备执行额外的记录保存ACK结果的操作。
由此，可以避免基站持续调度不必要的重传，也避免了由此带来的资源浪费。
在一些实施例中，所述第一边链路发送和所述第二边链路发送具有相同的混合自动重传请求进程标识(HARQ process ID)。
在一些实施例中，所述被SL-RNTI加扰的DCI的新数据指示(NDI，new data indication)字段没有翻转(NDI does not toggle)，所述被SL-CS-RNTI加扰的DCI的NDI字段取值为1。由此，可以指示第一边链路发送为重传。
在一些实施例中，所述第二指示信息(ACK)的优先级根据所述物理边链路控制信道中的优先级指示字段被确定。
在一些实施例中，所述第一指示信息的优先级被预先配置为最低的边链路优先级。
例如，边链路优先级数值(priority value)可以为定义为0-7，其中0表示边链路优先级最高，7表示边链路优先级最低，则可以将该第一指示信息(ACK)的优先级数值配置为7。
在一些实施例中，所述第一指示信息的优先级被预先配置为某一边链路优先级。
例如，边链路优先级数值可以为定义为0-7，其中0表示边链路优先级最高，7表示边链路优先级最低，则可以将该第一指示信息(ACK)的优先级数值配置为0到7之间的一个数值。
在一些实施例中，所述第一物理上行控制信道的优先级至少根据所述第一指示信息的优先级被确定。例如，所述第一物理上行控制信道仅承载所述第一指示信息，所述第一物理上行控制信道的优先级等于所述第一指示信息的优先级。
例如，对于上述携带ACK的PUCCH(PUCCH#1)，其也可能在时间上与其他边链路发送或上行发送发生重叠，导致终端设备需要根据优先级高低进行丢弃，因此需要确定PUCCH#1的优先级。由于终端设备没有在dynamic grant 1调度的PSSCH资源上进行发送，因此对于PUCCH#1携带的ACK，并不存在与之关联的PSSCH，因此ACK的优先级无法根据PSSCH的优先级来确定。因此，如果不对此进行规定，终端设备在决定PUCCH#1优先级时将会出现未定义的设备行为，使优先级排序存在不确定性。
在本申请实施例中，由于上述ACK没有与之关联的PSSCH，可以将ACK的优 先级定义为始终等于最低的边链路优先级，即ACK的优先级是所有边链路的优先级中最低的，但本申请不限于此。
在一些实施例中，终端设备进行信道或信号的优先级比较后，如果确定所述下行控制信息指示的第一物理上行控制信道不能够被发送；则可以发送与所述第一物理上行控制信道重叠的信道或信号，例如上行发送或者边链路发送。即，在所述下行控制信息指示的第一物理上行控制信道不能够被发送的情况下，不发送承载所述第一指示信息的所述第一物理上行控制信道。
图6是本申请实施例的优先级比较的一示意图，如图6所示，由于终端设备没有数据需要发送，因此在PUCCH上发送ACK，并且该PUCCH仅携带ACK(该PUCCH承载没有关联PSSCH的ACK)。当PUCCH与边链路发送在时间上发生重叠，并且需要丢弃其中某些发送时，由于PUCCH携带的ACK具有最低的边链路优先级，终端设备丢弃PUCCH，仅进行边链路发送。
由此，可以保证这些其他的信道或信号(例如上行发送或者边链路发送)能够可靠地被发送。由于网络设备仍然没有接收到第一指示信息(ACK)，可能会再次发送动态授权，终端设备可以等待该动态授权，然后在对应的PUCCH上发送该第一指示信息(ACK)。
在一些实施例中，所述第一物理上行控制信道承载多个反馈信息，所述第一指示信息在所述多个反馈信息中具有最低的边链路优先级。所述第一物理上行控制信道的优先级等于所述第一物理上行控制信道所承载的所述多个反馈信息中的最高的优先级。
例如，PUCCH也可能携带多个HARQ-ACK比特，例如PUCCH承载的是HARQ-ACK码书(codebook)，此时PUCCH的优先级是所有HARQ-ACK中最高的优先级。在对PUCCH中携带的多个HARQ-ACK进行优先级比较时，如果PUCCH包含由于前面所述原因所产生的ACK，那么该ACK的优先级被认为是最低的边链路优先级，然后与其他HARQ-ACK的优先级进行比较。
由此，可以避免在进行边链路优先级比较时出现未定义的设备行为，避免优先级排序出现不确定性。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例， 也可以将以上各个实施例中的一种或多种结合起来。
由上述实施例可知，终端设备在没有数据发送的资源所关联的PUCCH上反馈指示信息(ACK)，该指示信息的优先级被预先配置。由此，可以减少或避免网络设备错误地持续调度资源，减少边链路资源的浪费。
第二方面的实施例
本申请实施例提供一种边链路反馈信息的发送方法，可以与第一方面的实施例结合起来，也可以单独地实施；与第一方面的实施例相同的内容不再赘述。
在一些实施例中，终端设备生成指示边链路发送不成功的指示信息(NACK)；其中所述边链路发送的边链路数据没有被发送(例如被丢弃)；所述终端设备通过物理上行控制信道发送所述指示信息(NACK)；其中所述指示信息的优先级被配置为所述逻辑信道的优先级。
如前所述，对于某一承载在PUCCH中的边链路HARQ-ACK，其优先级实际上来源于SCI的优先级字段所指示的优先级。然而，对于以下情况，无法使用SCI的优先级字段确定HARQ-ACK的优先级。
例如，当终端设备根据数据发送的优先级规则丢弃了边链路发送时(即终端设备没有进行边链路发送)，终端设备需要通过PUCCH向网络设备发送NACK。但由于终端设备在生成逻辑信道阶段丢弃了边链路发送，此时终端设备还没有生成SCI，因此无法基于SCI的优先级字段确定PUCCH中的边链路HARQ-ACK。
在一些实施例中，为解决这一问题，终端设备可以将PUCCH中的边链路HARQ-ACK(NACK)的优先级确定为等于被丢弃的逻辑信道的优先级。由此，可以避免在进行边链路优先级比较时出现未定义的设备行为，避免优先级排序出现不确定性。
第三方面的实施例
本申请实施例提供一种边链路反馈信息的接收方法，从网络设备进行说明，与第一、二方面的实施例相同的内容不再赘述。
图7是本申请实施例的边链路反馈信息的接收方法的一示意图，如图7所示，该方法包括：
701，网络设备发送CRC被SL-RNTI或SL-CS-RNTI加扰的下行控制信息(DCI)；其中，所述下行控制信息指示动态授权资源，并调度终端设备使用所述动态授权资源进行边链路发送；以及
702，网络设备接收通过所述下行控制信息所指示的物理上行控制信道发送的指示信息；
其中，在所述下行控制信息调度的动态授权资源上未进行边链路发送，所述指示信息被终端设备用于指示所述边链路发送为成功或不需要网络设备调度重传，并且所述指示信息的优先级被预先配置。
在一些实施例中，所述指示信息的优先级被预先配置为最低的边链路优先级。
在一些实施例中，所述物理上行控制信道的优先级至少根据所述指示信息的优先级被确定。
在一些实施例中，所述物理上行控制信道仅承载所述指示信息；所述物理上行控制信道的优先级等于所述指示信息的优先级。
在一些实施例中，所述物理上行控制信道承载多个反馈信息；所述物理上行控制信道的优先级等于所述物理上行控制信道所承载的所述多个反馈信息中的最高的优先级。
在一些实施例中，所述被SL-RNTI加扰的DCI的新数据指示(NDI，new data indication)字段没有翻转(NDI does not toggle)，所述被SL-CS-RNTI加扰的DCI的NDI字段取值为1。
值得注意的是，以上附图7仅对本申请实施例进行了示意性说明，但本申请不限于此。例如可以适当地调整各个操作之间的执行顺序，此外还可以增加其他的一些操作或者减少其中的某些操作。本领域的技术人员可以根据上述内容进行适当地变型，而不仅限于上述附图7的记载。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
由上述实施例可知，终端设备在没有数据发送的资源所关联的PUCCH上反馈指示信息(ACK)，该指示信息的优先级被预先配置。由此，可以减少或避免网络设备错误地持续调度资源，减少边链路资源的浪费。
第四方面的实施例
本申请实施例提供一种边链路反馈信息的发送装置。该装置例如可以是终端设备，也可以是配置于终端设备的某个或某些部件或者组件，与第一、二方面的实施例相同的内容不再赘述。
图8是本申请实施例的边链路反馈信息的发送装置的一示意图。如图8所示，边链路反馈信息的发送装置800包括：
接收单元801，其接收循环冗余校验被边链路无线网络临时标识或边链路配置调度无线网络临时标识加扰的下行控制信息；其中，所述下行控制信息指示动态授权资源，并调度终端设备使用所述动态授权资源进行第一边链路发送；
指示生成单元802，其生成用于指示第一边链路发送为成功或不需要网络设备调度重传的第一指示信息，其中在所述下行控制信息调度的动态授权资源上未进行所述第一边链路发送，并且所述第一指示信息的优先级被预先配置；以及
发送单元803，其通过所述第一物理上行控制信道发送所述第一指示信息。
在一些实施例中，如图8所示，边链路反馈信息的发送装置800还可以包括：
优先级比较单元804，其进行信道或信号的优先级比较，以确定所述下行控制信息指示的第一物理上行控制信道是否能够被发送；其中，所述第一物理上行控制信道的优先级至少根据所述第一指示信息的优先级被确定。
在一些实施例中，第一指示信息的优先级被预先配置为最低的边链路优先级。
在一些实施例中，所述第一物理上行控制信道仅承载所述第一指示信息；所述第一物理上行控制信道的优先级等于所述第一指示信息的优先级。
在一些实施例中，所述第一物理上行控制信道承载多个反馈信息；所述第一物理上行控制信道的优先级等于所述第一物理上行控制信道所承载的所述多个反馈信息中的最高的优先级。
在一些实施例中，所述发送单元803还用于：使用动态授权资源或者配置授权资源并通过物理边链路控制信道和/或物理边链路共享信道进行第二边链路发送；
所述接收单元801还用于：通过物理边链路反馈信道接收用于指示所述第二边链路发送为成功的第二指示信息；以及
所述优先级比较单元804还用于：进行信道或信号的优先级比较并确定承载所述 第二指示信息的第二物理上行控制信道不能够被发送。
在一些实施例中，所述第二边链路发送在所述第一边链路发送之前进行；在所述第二物理上行控制信道没有被发送的情况下，所述下行控制信息被网络设备发送来调度终端设备进行所述第一边链路发送。
在一些实施例中，所述第一边链路发送和所述第二边链路发送具有相同的混合自动重传请求进程标识。
在一些实施例中，所述循环冗余校验被边链路无线网络临时标识加扰的下行控制信息的新数据指示字段没有翻转，所述循环冗余校验被边链路配置调度无线网络临时标识加扰的下行控制信息的新数据指示字段取值为1。
在一些实施例中，所述第二指示信息的优先级根据所述物理边链路控制信道中的优先级指示字段被确定。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
值得注意的是，以上仅对与本申请相关的各部件或模块进行了说明，但本申请不限于此。边链路反馈信息的发送装置800还可以包括其他部件或者模块，关于这些部件或者模块的具体内容，可以参考相关技术。
此外，为了简单起见，图8中仅示例性示出了各个部件或模块之间的连接关系或信号走向，但是本领域技术人员应该清楚的是，可以采用总线连接等各种相关技术。上述各个部件或模块可以通过例如处理器、存储器、发射机、接收机等硬件设施来实现；本申请实施并不对此进行限制。
由上述实施例可知，终端设备在没有数据发送的资源所关联的PUCCH上反馈指示信息(ACK)，该指示信息的优先级被预先配置。由此，可以减少或避免网络设备错误地持续调度资源，减少边链路资源的浪费。
第五方面的实施例
本申请实施例提供一种边链路反馈信息的接收装置。该装置例如可以是网络设备，也可以是配置于网络设备的某个或某些部件或者组件，与第三方面的实施例相同的内容不再赘述。
图9是本申请实施例的边链路反馈信息的接收装置的一示意图。如图9所示，边链路反馈信息的接收装置900包括：
发送单元901，其发送循环冗余校验被边链路无线网络临时标识或边链路配置调度无线网络临时标识加扰的下行控制信息；其中，所述下行控制信息指示动态授权资源，并调度终端设备使用所述动态授权资源进行边链路发送；以及
接收单元902，其接收通过所述下行控制信息所指示的物理上行控制信道发送的指示信息；
其中，在所述下行控制信息调度的动态授权资源上未进行边链路发送，所述指示信息被终端设备用于指示所述边链路发送为成功或不需要网络设备调度重传，并且所述指示信息的优先级被预先配置。
在一些实施例中，所述指示信息的优先级被预先配置为最低的边链路优先级。
在一些实施例中，所述物理上行控制信道的优先级至少根据所述指示信息的优先级被确定。
在一些实施例中，所述物理上行控制信道仅承载所述指示信息；所述物理上行控制信道的优先级等于所述指示信息的优先级。
在一些实施例中，所述物理上行控制信道承载多个反馈信息；所述物理上行控制信道的优先级等于所述物理上行控制信道所承载的所述多个反馈信息中的最高的优先级。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
值得注意的是，以上仅对与本申请相关的各部件或模块进行了说明，但本申请不限于此。边链路反馈信息的接收装置900还可以包括其他部件或者模块，关于这些部件或者模块的具体内容，可以参考相关技术。
此外，为了简单起见，图9中仅示例性示出了各个部件或模块之间的连接关系或信号走向，但是本领域技术人员应该清楚的是，可以采用总线连接等各种相关技术。上述各个部件或模块可以通过例如处理器、存储器、发射机、接收机等硬件设施来实现；本申请实施并不对此进行限制。
由上述实施例可知，终端设备在没有数据发送的资源所关联的PUCCH上反馈指 示信息(ACK)，该指示信息的优先级被预先配置。由此，可以减少或避免网络设备错误地持续调度资源，减少边链路资源的浪费。
第六方面的实施例
本申请实施例还提供一种通信系统，可以参考图1，与第一方面至第四方面的实施例相同的内容不再赘述。该通信系统可以包括：
终端设备，其接收循环冗余校验被边链路无线网络临时标识或边链路配置调度无线网络临时标识加扰的下行控制信息；生成用于指示边链路发送为成功或不需要网络设备调度重传的指示信息；以及通过所述物理上行控制信道发送所述指示信息；以及
网络设备，其发送所述下行控制信息并接收所述指示信息；
其中，所述下行控制信息指示动态授权资源，并调度所述终端设备使用所述动态授权资源进行所述边链路发送；在所述下行控制信息调度的所述动态授权资源上未进行所述边链路发送，并且所述指示信息的优先级被预先配置。
本申请实施例还提供一种网络设备，例如可以是基站，但本申请不限于此，还可以是其他的网络设备。
图10是本申请实施例的网络设备的构成示意图。如图10所示，网络设备1000可以包括：处理器1010(例如中央处理器CPU)和存储器1020；存储器1020耦合到处理器1010。其中该存储器1020可存储各种数据；此外还存储信息处理的程序1030，并且在处理器1010的控制下执行该程序1030。
例如，处理器1010可以被配置为执行程序而实现如第三方面的实施例所述的边链路反馈信息的接收方法。例如处理器1610可以被配置为进行如下的控制：发送循环冗余校验被边链路无线网络临时标识或边链路配置调度无线网络临时标识加扰的下行控制信息；以及接收通过所述下行控制信息所指示的物理上行控制信道发送的指示信息；其中，在所述下行控制信息调度的动态授权资源上未进行边链路发送，所述指示信息被终端设备用于指示所述边链路发送为成功或不需要网络设备调度重传，并且所述指示信息的优先级被预先配置。
此外，如图10所示，网络设备1000还可以包括：收发机1040和天线1050等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，网络设备1000也并不是必须要包括图10中所示的所有部件；此外，网络设备1000还可以包 括图10中没有示出的部件，可以参考现有技术。
本申请实施例还提供一种终端设备，但本申请不限于此，还可以是其他的设备。
图11是本申请实施例的终端设备的示意图。如图11所示，该终端设备1100可以包括处理器1110和存储器1120；存储器1120存储有数据和程序，并耦合到处理器1110。值得注意的是，该图是示例性的；还可以使用其他类型的结构，来补充或代替该结构，以实现电信功能或其他功能。
例如，处理器1110可以被配置为执行程序而实现如第一、二方面的实施例所述的边链路反馈信息的发送方法。例如处理器1110可以被配置为进行如下的控制：接收循环冗余校验被边链路无线网络临时标识或边链路配置调度无线网络临时标识加扰的下行控制信息；生成用于指示第一边链路发送为成功或不需要网络设备调度重传的第一指示信息，其中在所述下行控制信息调度的动态授权资源上未进行所述第一边链路发送，并且所述第一指示信息的优先级被预先配置；以及通过所述下行控制信息指示的第一物理上行控制信道发送所述第一指示信息。
如图11所示，该终端设备1100还可以包括：通信模块1130、输入单元1140、显示器1150、电源1160。其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，终端设备1100也并不是必须要包括图11中所示的所有部件，上述部件并不是必需的；此外，终端设备1100还可以包括图11中没有示出的部件，可以参考现有技术。
本申请实施例还提供一种计算机程序，其中当在终端设备中执行所述程序时，所述程序使得所述终端设备执行第一、二方面的实施例所述的边链路反馈信息的发送方法。
本申请实施例还提供一种存储有计算机程序的存储介质，其中所述计算机程序使得终端设备执行第一、二方面的实施例所述的边链路反馈信息的发送方法。
本申请实施例还提供一种计算机程序，其中当在网络设备中执行所述程序时，所述程序使得所述网络设备执行第三方面的实施例所述的边链路反馈信息的接收方法。
本申请实施例还提供一种存储有计算机程序的存储介质，其中所述计算机程序使得终端设备执行第三方面的实施例所述的边链路反馈信息的接收方法。
本申请以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本申请涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现 上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。本申请还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
结合本申请实施例描述的方法/装置可直接体现为硬件、由处理器执行的软件模块或二者组合。例如，图中所示的功能框图中的一个或多个和/或功能框图的一个或多个组合，既可以对应于计算机程序流程的各个软件模块，亦可以对应于各个硬件模块。这些软件模块，可以分别对应于图中所示的各个步骤。这些硬件模块例如可利用现场可编程门阵列(FPGA)将这些软件模块固化而实现。
软件模块可以位于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动磁盘、CD-ROM或者本领域已知的任何其它形式的存储介质。可以将一种存储介质耦接至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息；或者该存储介质可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。该软件模块可以存储在移动终端的存储器中，也可以存储在可插入移动终端的存储卡中。例如，若设备(如移动终端)采用的是较大容量的MEGA-SIM卡或者大容量的闪存装置，则该软件模块可存储在该MEGA-SIM卡或者大容量的闪存装置中。
针对附图中描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，可以实现为用于执行本申请所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件或者其任意适当组合。针对附图描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，还可以实现为计算设备的组合，例如，DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本申请进行了描述，但本领域技术人员应该清楚，这些描述都是示例性的，并不是对本申请保护范围的限制。本领域技术人员可以根据本申请的精神和原理对本申请做出各种变型和修改，这些变型和修改也在本申请的范围内。
关于包括以上实施例的实施方式，还公开下述的附记：
附记1、一种边链路反馈信息的发送方法，包括：
终端设备接收循环冗余校验(CRC)被边链路无线网络临时标识(SL-RNTI)或 边链路配置调度无线网络临时标识(SL-CS-RNTI)加扰的下行控制信息(DCI)，其中所述下行控制信息指示动态授权资源，并调度所述终端设备使用所述动态授权资源进行第一边链路发送；
生成用于指示第一边链路发送为成功或不需要网络设备调度重传的第一指示信息，其中在所述动态授权资源上未进行所述第一边链路发送，并且所述第一指示信息的优先级被预先配置；以及
通过所述第一物理上行控制信道发送所述第一指示信息。
附记2、根据附记1所述的方法，其中，所述方法还包括：
进行信道或信号优先级的比较，以确定所述下行控制信息指示的第一物理上行控制信道是否能够被发送；其中，所述第一物理上行控制信道的优先级至少根据所述第一指示信息的优先级被确定。
附记3、根据附记2所述的方法，其中，所述方法还包括：
在所述下行控制信息指示的第一物理上行控制信道不能够被发送的情况下，不发送承载所述第一指示信息的所述第一物理上行控制信道。
附记4、根据附记2所述的方法，其中，所述方法还包括：
在所述下行控制信息指示的第一物理上行控制信道不能够被发送的情况下，发送与所述第一物理上行控制信道重叠的信道或信号。
附记5、根据附记1至4任一项所述的方法，其中，所述第一指示信息的优先级被预先配置为最低的边链路优先级。
附记6、根据附记1至5任一项所述的方法，其中，所述第一物理上行控制信道仅承载所述第一指示信息。
附记7、根据附记6所述的方法，所述第一物理上行控制信道的优先级等于所述第一指示信息的优先级。
附记8、根据附记1至7任一项所述的方法，其中，所述第一物理上行控制信道承载包括所述第一指示信息的多个反馈信息。
附记9、根据附记8所述的方法，其中，所述第一物理上行控制信道的优先级等于所述第一物理上行控制信道所承载的所述多个反馈信息中的最高的优先级。
附记10、根据附记1至10任一项所述的方法，其中，所述方法还包括：
所述终端设备使用动态授权资源或者配置授权资源并通过物理边链路控制信道 和/或物理边链路共享信道进行第二边链路发送；
通过物理边链路反馈信道接收用于指示所述第二边链路发送为成功的第二指示信息；以及
进行信道或信号的优先级比较并确定承载所述第二指示信息的第二物理上行控制信道不能够被发送。
附记11、根据附记10所述的方法，其中，所述终端设备在所述第一边链路发送之前进行所述第二边链路发送；
在所述第二物理上行控制信道没有被发送的情况下，所述下行控制信息被网络设备发送来调度所述终端设备进行所述第一边链路发送。
附记12、根据附记10或11所述的方法，其中，所述第一边链路发送和所述第二边链路发送具有相同的混合自动重传请求进程标识。
附记13、根据附记10至12任一项所述的方法，其中，所述第二指示信息的优先级根据所述物理边链路控制信道中的优先级指示字段被确定。
附记14、根据附记1至13任一项所述的方法，其中，所述被SL-RNTI加扰的DCI的新数据指示(NDI，new data indication)字段没有翻转(NDI does not toggle)，所述被SL-CS-RNTI加扰的DCI的NDI字段取值为1。
附记15、一种边链路反馈信息的发送方法，包括：
终端设备接收循环冗余校验(CRC)被边链路无线网络临时标识(SL-RNTI)或边链路配置调度无线网络临时标识(SL-CS-RNTI)加扰的下行控制信息(DCI)，其中所述下行控制信息指示动态授权资源，并调度所述终端设备使用所述动态授权资源进行第一边链路发送；
生成用于指示第一边链路发送为成功或不需要网络设备调度重传的第一指示信息，其中在所述动态授权资源上未进行所述第一边链路发送，并且所述第一指示信息的优先级被预先配置；以及
发送与所述下行控制信息指示的第一物理上行控制信道重叠的信道或信号。
附记16、根据附记15所述的方法，其中，所述方法还包括：
进行信道或信号优先级的比较，以确定所述下行控制信息指示的第一物理上行控制信道是否能够被发送；其中，所述第一物理上行控制信道的优先级至少根据所述第一指示信息的优先级被确定。
附记17、根据附记15或16所述的方法，其中，所述方法还包括：
在所述下行控制信息指示的第一物理上行控制信道能够被发送的情况下，通过所述第一物理上行控制信道发送所述第一指示信息。
附记18、根据附记15或16所述的方法，其中，所述方法还包括：
在所述下行控制信息指示的第一物理上行控制信道不能够被发送的情况下，不发送承载所述第一指示信息的所述第一物理上行控制信道。
附记19、一种边链路反馈信息的发送方法，包括：
终端设备生成指示边链路发送不成功的指示信息(NACK)；其中所述边链路发送的边链路数据没有被发送；
所述终端设备通过物理上行控制信道发送所述指示信息(NACK)；其中所述指示信息的优先级等于所述边链路数据的逻辑信道的优先级。
附记20、一种边链路反馈信息的接收方法，包括：
网络设备发送循环冗余校验(CRC)被边链路无线网络临时标识(SL-RNTI)或边链路配置调度无线网络临时标识(SL-CS-RNTI)加扰的下行控制信息(DCI)；其中，所述下行控制信息指示动态授权资源，并调度终端设备使用所述动态授权资源进行边链路发送；以及
接收通过所述下行控制信息所指示的物理上行控制信道发送的指示信息；
其中，所述下行控制信息调度的动态授权资源未被所述终端设备用于进行所述边链路发送，所述指示信息被所述终端设备用于指示所述边链路发送为成功或不需要网络设备调度重传，并且所述指示信息的优先级被预先配置。
附记21、根据附记20所述的方法，其中，所述指示信息的优先级被预先配置为最低的边链路优先级。
附记22、根据附记20或21所述的方法，其中，所述物理上行控制信道的优先级至少根据所述指示信息的优先级被确定。
附记23、根据附记20至22任一项所述的方法，其中，所述第一物理上行控制信道仅承载所述第一指示信息。
附记24、根据附记23所述的方法，其中，所述物理上行控制信道的优先级等于所述指示信息的优先级。
附记25、根据附记20至24任一项所述的方法，其中，所述物理上行控制信道 承载多个反馈信息。
附记26、根据附记21所述的方法，其中，所述物理上行控制信道的优先级等于所述物理上行控制信道所承载的所述多个反馈信息中的最高的优先级。
附记27、根据附记20至26任一项所述的方法，其中，所述被SL-RNTI加扰的DCI的新数据指示(NDI，new data indication)字段没有翻转(NDI does not toggle)，所述被SL-CS-RNTI加扰的DCI的NDI字段取值为1。
附记28、一种终端设备，包括存储器和处理器，所述存储器存储有计算机程序，所述处理器被配置为执行所述计算机程序而实现如附记1至20任一项所述的边链路反馈信息的发送方法。
附记29、一种网络设备，包括存储器和处理器，所述存储器存储有计算机程序，所述处理器被配置为执行所述计算机程序而实现如附记21至27任一项所述的边链路反馈信息的接收方法。

Claims (20)

  1. 一种边链路反馈信息的发送装置，包括：
    接收单元，其接收循环冗余校验被边链路无线网络临时标识或边链路配置调度无线网络临时标识加扰的下行控制信息；其中，所述下行控制信息指示动态授权资源，并调度终端设备使用所述动态授权资源进行第一边链路发送；
    指示生成单元，其生成用于指示所述第一边链路发送为成功或不需要网络设备调度重传的第一指示信息，其中在所述下行控制信息调度的所述动态授权资源上未进行所述第一边链路发送，并且所述第一指示信息的优先级被预先配置；以及
    发送单元，其通过所述下行控制信息指示的第一物理上行控制信道发送所述第一指示信息。
  2. 根据权利要求1所述的装置，其中，所述装置还包括：
    优先级比较单元，其进行信道或信号的优先级比较，以确定所述下行控制信息指示的第一物理上行控制信道是否能够被发送；其中，所述第一物理上行控制信道的优先级至少根据所述第一指示信息的优先级被确定。
  3. 根据权利要求1所述的装置，其中，所述第一指示信息的优先级被预先配置为最低的边链路优先级。
  4. 根据权利要求1所述的装置，其中，所述第一物理上行控制信道承载所述第一指示信息。
  5. 根据权利要求4所述的装置，其中，所述第一物理上行控制信道的优先级等于所述第一指示信息的优先级。
  6. 根据权利要求1所述的装置，其中，所述第一物理上行控制信道承载包括所述第一指示信息的多个反馈信息。
  7. 根据权利要求6所述的装置，其中，所述第一物理上行控制信道的优先级等于所述第一物理上行控制信道所承载的所述多个反馈信息中的最高的优先级。
  8. 根据权利要求2所述的装置，其中，所述发送单元还用于：使用动态授权资源或者配置授权资源并通过物理边链路控制信道和/或物理边链路共享信道进行第二边链路发送；
    所述接收单元还用于：通过物理边链路反馈信道接收用于指示所述第二边链路发 送为成功的第二指示信息；以及
    所述优先级比较单元还用于：进行信道或信号的优先级比较并确定承载所述第二指示信息的第二物理上行控制信道不能够被发送。
  9. 根据权利要求8所述的装置，其中，所述第二边链路发送在所述第一边链路发送之前进行；
    在所述第二物理上行控制信道没有被发送的情况下，所述下行控制信息被网络设备发送来调度终端设备进行所述第一边链路发送。
  10. 根据权利要求8所述的装置，其中，所述第一边链路发送和所述第二边链路发送具有相同的混合自动重传请求进程标识。
  11. 根据权利要求1所述的装置，其中，所述循环冗余校验被边链路无线网络临时标识加扰的下行控制信息的新数据指示字段没有翻转，所述循环冗余校验被边链路配置调度无线网络临时标识加扰的下行控制信息的新数据指示字段取值为1。
  12. 根据权利要求8所述的装置，其中，所述第二指示信息的优先级根据所述物理边链路控制信道中的优先级指示字段被确定。
  13. 一种边链路反馈信息的接收装置，包括：
    发送单元，其发送循环冗余校验被边链路无线网络临时标识或边链路配置调度无线网络临时标识加扰的下行控制信息；其中，所述下行控制信息指示动态授权资源，并调度终端设备使用所述动态授权资源进行边链路发送；以及
    接收单元，其接收通过所述下行控制信息所指示的物理上行控制信道发送的指示信息；
    其中，所述下行控制信息调度的动态授权资源未被所述终端设备用于进行所述边链路发送，所述指示信息被所述终端设备用于指示所述边链路发送为成功或不需要网络设备调度重传，并且所述指示信息的优先级被预先配置。
  14. 根据权利要求13所述的装置，其中，所述指示信息的优先级被预先配置为最低的边链路优先级。
  15. 根据权利要求13所述的装置，其中，所述物理上行控制信道的优先级至少根据所述指示信息的优先级被确定。
  16. 根据权利要求15所述的装置，其中，所述物理上行控制信道承载所述指示信息。
  17. 根据权利要求16所述的装置，其中，所述物理上行控制信道的优先级等于所述指示信息的优先级。
  18. 根据权利要求15所述的装置，其中，所述物理上行控制信道承载包括所述指示信息的多个反馈信息。
  19. 根据权利要求18所述的装置，其中，所述物理上行控制信道的优先级等于所述物理上行控制信道所承载的所述多个反馈信息中的最高的优先级。
  20. 一种通信系统，包括：
    终端设备，其接收循环冗余校验被边链路无线网络临时标识或边链路配置调度无线网络临时标识加扰的下行控制信息；生成用于指示边链路发送为成功或不需要网络设备调度重传的指示信息；以及通过所述下行控制信息指示的物理上行控制信道发送所述指示信息；以及
    网络设备，其发送所述下行控制信息并接收所述指示信息；
    其中，所述下行控制信息指示动态授权资源，并调度所述终端设备使用所述动态授权资源进行所述边链路发送；在所述下行控制信息调度的所述动态授权资源上未进行所述边链路发送，并且所述指示信息的优先级被预先配置。
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EP20935330.9A EP4152845A4 (en) 2020-05-14 2020-05-14 METHOD AND APPARATUS FOR SENDING AND RECEIVING SIDE LINK FEEDBACK INFORMATION
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