WO2024114412A1 - 发送和接收反馈信息的方法和装置 - Google Patents

发送和接收反馈信息的方法和装置 Download PDF

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Publication number
WO2024114412A1
WO2024114412A1 PCT/CN2023/132314 CN2023132314W WO2024114412A1 WO 2024114412 A1 WO2024114412 A1 WO 2024114412A1 CN 2023132314 W CN2023132314 W CN 2023132314W WO 2024114412 A1 WO2024114412 A1 WO 2024114412A1
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Prior art keywords
information
feedback
resource
transmission resource
data
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PCT/CN2023/132314
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English (en)
French (fr)
Inventor
何泓利
李雪茹
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华为技术有限公司
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Publication of WO2024114412A1 publication Critical patent/WO2024114412A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • Embodiments of the present application relate to the field of communications, and more specifically, to a method and device for sending feedback information, and a method and device for receiving feedback information.
  • Sidelink is an important technology that enables direct device-to-device (D2D) communication in a communication system without going through a base station.
  • the communication system can be a long-term evolution (LTE) system or the fifth generation new radio (5G NR) system. Since the transmission between devices does not need to be forwarded through the base station, Sidelink can achieve shorter latency, higher spatial multiplexing efficiency and lower core network load. It plays a huge role in scenarios with relatively high local communication requirements, such as vehicle to everything (V2X), smart home, short-distance transmission, virtual/augmented reality (VR/AR), and smart factories.
  • V2X vehicle to everything
  • smart home smart home
  • short-distance transmission virtual/augmented reality (VR/AR)
  • smart factories such as virtual/augmented reality (VR/AR), and smart factories.
  • V2X vehicle to everything
  • VR/AR virtual/augmented reality
  • the device During the SL communication transmission process, the device will be configured with a resource pool.
  • the configuration information of the resource pool includes the configuration information of the physical sidelink feedback channel (PSFCH).
  • PSFCH can be used to carry sidelink feedback control information, including sidelink hybrid automatic repeat request (HARQ).
  • HARQ sidelink hybrid automatic repeat request
  • the configuration information of the resource pool also includes the period of occurrence of PSFCH, that is, how many time slots a time slot containing PSFCH resources appears.
  • the device receives the physical sidelink shared channel (physical sidelink shared channel, PSSCH)
  • the device determines the PSFCH resources for sending feedback information based on the configuration information of the resource pool. Specifically, for example, the device first detects the physical sidelink control channel (physical sidelink control channel, PSCCH), and receives the PSSCH based on the sidelink control information (SCI) in the PSCCH.
  • PSSCH physical sidelink shared channel
  • the device After the device receives the PSSCH, it can determine the time slot corresponding to the PSSCH and the physical resource block (physical resource block, PRB) corresponding to one or more sub-channels based on the configuration information of the resource pool to determine the PSFCH resources used to send feedback information.
  • the physical resource block physical resource block, PRB
  • the PSFCH resources used to send feedback information are configured by the system, that is, the PSFCH resources corresponding to the time slots and subchannels for sending feedback information are configured in advance on the resource pool. If the device sends PSSCH feedback information according to the PSFCH resources corresponding to the PSSCH configured by the system, the flexibility of resource configuration will be poor.
  • the embodiment of the present application provides a method for power line communication, which can reduce the resource overhead of the system in maintaining multicast group members and save resources.
  • a method for power line communication comprising: a first node receives a first multicast frame, the first multicast frame includes a multicast member.
  • An embodiment of the present application provides a method for sending and receiving feedback information, which can make the feedback resources occupied by sending and receiving feedback information more flexible.
  • a method for sending feedback information comprising: a first device sends first information to a second device, the first information comprising information of a first transmission resource and information of a first feedback resource, the first transmission resource is associated with the first feedback resource, a first feedback resource set comprises the first feedback resource, configuration information of a first resource pool comprises configuration information of the first feedback resource set, the first resource pool is a resource pool configured for the first device and the second device, the first transmission resource is used for the first device to receive first data of the second device; the first device sends feedback information to the second device on the first feedback resource, the feedback information is used to indicate whether the first device has successfully received the first data.
  • the configuration information of the first resource pool includes information of the first feedback resource, which can also be understood as the first feedback resource set being the first
  • the first feedback resource set is configured in the resource pool, or the first feedback resource set is related to the configuration information of the first resource pool. It can also be understood that the first feedback resource set can be determined by the configuration information of the first resource pool.
  • the configuration information of the first resource pool includes the period of PSFCH.
  • the corresponding time slots 0, 4, 8, and 12 include resources for transmitting PSFCH;
  • the configuration information of the first resource pool includes the configuration information of the PSFCH transmission resource block set, and the resource block set includes one or more physical resource blocks (PRB) for transmitting PSFCH.
  • PRB physical resource blocks
  • the first resource pool is configured for the first device and the second device, wherein the first resource pool may also be configured for other devices (such as the third device), which is not specifically limited in this application.
  • the first device may include one or more devices
  • the second device may include one or more devices, which is not specifically limited in this application.
  • the first device can configure the feedback resource corresponding to the first transmission resource for the second device, rather than determining the feedback resource according to the mapping relationship between the default transmission resource and the feedback resource in the prior art, thereby improving the flexibility of the feedback resource.
  • the first feedback resource still belongs to the feedback resource set configured by the first resource pool, and the existing frame structure of the side link can be kept unchanged.
  • the method further includes: the first device sending second information to the third device, the second information including information about the second transmission resource and information about the first feedback resource, the second transmission resource is used by the first device to receive second data from the third device, and the second transmission resource is associated with the first feedback resource;
  • the first device sends feedback information to the second device on the first feedback resource, where the feedback information is used to indicate whether the first device successfully receives the first data, including:
  • the first device sends feedback information to the second device and the third device on the first feedback resource, where the feedback information is used to indicate whether the first device successfully receives the first data and the second data.
  • the first device sends second information to the third device, the second information includes information about the second transmission resource and information about the first feedback resource, and the second transmission resource is associated with the first feedback resource. It can be seen that when the first device receives the first data from the second device on the first transmission resource, and the first device receives the second data from the third device on the second transmission resource, the first device sends feedback information on the same feedback resource, for example, the first device sends feedback information on the same feedback resource (for example, the first feedback resource). That is, the first device can feedback data transmitted from multiple different devices through multiple different transmission resources on one feedback resource, thereby reducing the amount of feedback information sent by the first device and improving the reliability of feedback and resource utilization.
  • the third device can be one or more devices.
  • the second data sent by the third device includes multiple data, wherein the feedback information sent by the first device on the first feedback resource is used to indicate whether the first device has successfully received the first data and the second data.
  • the first information includes information of a first periodic transmission resource and information of a first periodic feedback resource
  • the first periodic transmission resource includes a first transmission resource
  • the first periodic feedback resource includes a first feedback resource
  • At least one transmission resource included in the first periodic transmission resource is associated one-to-one with at least one feedback resource included in the first periodic feedback resource.
  • the present application can flexibly indicate the corresponding feedback resources for the transmission resources of the periodic services, thereby further improving the overall performance of the network.
  • the information of the first feedback resource includes information of the third transmission resource
  • the first feedback resource is a feedback resource corresponding to the third transmission resource according to a first mapping relationship
  • the first mapping relationship is a mapping relationship between the transmission resources in the first resource pool and the feedback resources.
  • the information of the first feedback resource includes information of the third transmission resource
  • the first feedback resource is a feedback resource in the first feedback resource set that corresponds to the third transmission resource according to the first mapping relationship.
  • the first mapping relationship is a mapping relationship between transmission resources and feedback resources in the first resource pool.
  • the information of the first feedback resource includes the information of the third transmission resource, and the first feedback resource for sending feedback information is determined by the third transmission resource and the first mapping relationship.
  • the feedback resource corresponding to the third transmission resource is determined from the first feedback resource set by the first mapping relationship as the first feedback resource.
  • the information of the first periodic feedback resource includes information of the third periodic transmission resource
  • the third periodic transmission resource includes the third transmission resource
  • the first periodic feedback resource is a periodic feedback resource in the first periodic feedback resource set that corresponds to the third periodic transmission resource according to the first mapping relationship
  • the first periodic feedback resource set is configured by the first resource pool.
  • the transmission resources of periodic services can be flexibly indicated to correspond to the feedback resources, and further Improve the overall performance of the network.
  • the method further includes:
  • the first device receives third data of the fourth device on the third transmission resource
  • the first device sends feedback information to the fourth device on the first feedback resource, where the first feedback resource is determined based on the first mapping relationship and the third transmission resource, where the first mapping relationship is a mapping relationship between transmission resources in the first resource pool and feedback resources, and the feedback information is used to indicate whether the first device has successfully received the first data, the second data, and the third data.
  • the third transmission resource is a transmission resource having a first mapping relationship with the first feedback resource.
  • the first device receives the third data of the fourth device on the third transmission resource, and the first device sends feedback information to the fourth device on the first feedback resource.
  • the first device sends feedback information to different devices on the first feedback resource.
  • the first feedback resource is a feedback resource that has a mapping relationship with the third transmission resource determined according to the first mapping relationship. Therefore, if other devices (such as the fifth device and the sixth device) still determine the feedback resource corresponding to the transmission resource according to the first mapping relationship, the first device sending feedback information on the first feedback resource will not occupy the feedback resources corresponding to other transmission resources, that is, there will be no resource conflict with the feedback resources of other devices.
  • the first device sends feedback information to the second device and the third device on the first feedback resource, where the feedback information is used to indicate whether the first device successfully receives the first data and the second data, including:
  • the first device sends NACK information to the second device and the third device on the first feedback resource, where the situation includes:
  • the first device fails to receive or successfully decodes the first data on the first transmission resource
  • the first device sends feedback information on the first feedback resource.
  • the feedback information sent by the first device to the second device and the third device on the first feedback resource is ACK information
  • the feedback information sent by the first device to the second device and the third device on the first feedback resource is NACK information.
  • the present application can be further extended to a scenario where there are multiple (for example, three or more) transmission resources associated with the first feedback resource, and when the first device successfully receives and successfully decodes the data on the multiple transmission resources, the feedback information sent by the first device is ACK information.
  • the feedback information sent by the first device is NACK information, further reducing the amount of feedback information sent, improving the reliability of feedback, and improving resource utilization.
  • the second information includes information of a second periodic transmission resource and information of a first periodic feedback resource
  • the second periodic transmission resource includes a second transmission resource
  • the transmission resources of the periodic service can be flexibly indicated to correspond to the feedback resources, thereby further improving the overall performance of the network.
  • the method further includes:
  • the first device receives first indication information from the second device on the first transmission resource, where the first indication information is used to indicate whether the first data is invalid data, and the first indication information is associated with the first data.
  • the second device can send first indication information to the first device on the first transmission resource, and the first indication information is used to indicate that the first data of the second device on the first transmission resource is invalid data or an empty packet indication, so that when the first device determines the feedback information according to the data reception results on multiple transmission resources associated with the first feedback resource, the reception result of the first data on the first transmission resource can be excluded, and the sending of ACK information or NACK information is determined only according to whether the data is received and successfully decoded on other transmission resources, thereby improving the accuracy of the first device in determining the feedback information on the first feedback resource, while avoiding the problem of resource waste.
  • the method further includes:
  • the first device sends activation information or deactivation information to the second device, where the activation information or deactivation information is associated with the first transmission resource, the activation information is used to instruct the first device to send feedback information of the first data to the second device on the first feedback resource, and the deactivation information is used to instruct the first device to send feedback information of the first data to the second device on the first feedback resource.
  • the information is used to instruct the first device to send feedback information of the first data to the second device on the second feedback resource
  • the second feedback resource is a feedback resource in the first feedback resource set that corresponds to the first transmission resource according to the first mapping relationship
  • the first mapping relationship is a mapping relationship between the transmission resource and the feedback resource in the first resource pool.
  • the first device sends activation information or deactivation information to the second device, and the activation information is used to indicate that the first device and the second device feed back the first data through the first feedback resource configured by the first device, and the deactivation information is used to indicate that the first device and the second device feed back the first data through the second feedback resource configured in the resource pool and corresponding to the first transmission resource.
  • the activation information or deactivation information includes indication information of one or more transmission resources.
  • the activation information or deactivation information can further indicate activation or deactivation of different transmission resources.
  • the first device when the first device determines that the first transmission resource is occupied by other devices, the first device sends deactivation information to the second device.
  • the second device when the second device does not transmit data on the first transmission resource or reselects the resource, the first device sends deactivation information to the second device.
  • the method of determining feedback resources between devices can be flexibly adjusted according to interference conditions and load conditions, thereby improving the reliability of feedback information transmission.
  • the activation information or the deactivation information is associated with a first periodic transmission resource, and the first periodic transmission resource includes a first transmission resource.
  • the activation information includes a bit map
  • the deactivation information includes a bit map
  • the first bit in the bit map corresponds to the first transmission resource
  • the first bit When the first bit takes the first value, the first bit is used to indicate that the first device sends feedback information to the second device on the first feedback resource.
  • the first bit When the first bit takes the second value, the first bit is used to instruct the first device to send feedback information to the second device on the second feedback resource.
  • the specific expression of activation information and deactivation information can be indicated by the value of the bit in the bitmap.
  • the bits in the bitmap correspond to the transmission resources.
  • the first bit corresponds to the first transmission resource, the first bit takes the first value, and the first bit is used to indicate that the first device transmits feedback information on the first feedback resource; when the first bit takes the second value, the first bit is used to indicate that the first device transmits feedback information on the second feedback resource.
  • the activation information and the deactivation information are included in the medium control access (MAC) control element information.
  • MAC medium control access
  • the method further includes:
  • the first device receives first request information from the second device, where the first request information is used to request the first device to send activation information or deactivation information to the second device.
  • the second device when the second device has no need to send data on the first transmission resource/first periodic transmission resource, the second device can send first request information to the first device, and the first request information is used to request the first device to send deactivation information to the second device, thereby reducing the processing complexity of the first device.
  • a method for receiving feedback information comprising:
  • the second device receives first information of the first device, where the first information includes information of a first transmission resource and information of a first feedback resource, the first transmission resource is associated with the first feedback resource, the first feedback resource set includes the first feedback resource, the configuration information of the first resource pool includes configuration information of the first feedback resource set, the first resource pool is a resource pool configured for the first device and the second device, and the first transmission resource is used by the second device to send first data to the first device;
  • the second device receives feedback information from the first device on the first feedback resource, where the feedback information is used to indicate whether the first device has successfully received the first data.
  • the second device receives the feedback resource corresponding to the first transmission resource configured by the first device, rather than determining the feedback resource according to the default mapping relationship between the transmission resource and the feedback resource in the prior art, thereby improving the flexibility of the feedback resource.
  • the first feedback resource still belongs to the feedback resource set configured by the first resource pool, thereby ensuring that the existing sidelink frame structure remains unchanged.
  • the first information includes information of a first periodic transmission resource and information of a first periodic feedback resource
  • the first periodic transmission resource includes a first transmission resource
  • the first periodic feedback resource includes a first feedback resource
  • At least one transmission resource included in the first periodic transmission resource is associated one-to-one with at least one feedback resource included in the first periodic feedback resource.
  • the present application can flexibly indicate the corresponding feedback resources for the transmission resources of the periodic service, and further Improve the overall performance of the network step by step.
  • the information of the first feedback resource includes information of the third transmission resource
  • the first feedback resource is a feedback resource corresponding to the third transmission resource according to a first mapping relationship
  • the first mapping relationship is a mapping relationship between the transmission resources in the first resource pool and the feedback resources.
  • the information of the first feedback resource includes the information of the third transmission resource, and the first feedback resource for sending feedback information is determined by the third transmission resource and the first mapping relationship.
  • the feedback resource corresponding to the third transmission resource is determined from the first feedback resource set by the first mapping relationship as the first feedback resource.
  • the information of the first periodic feedback resource includes information of the third periodic transmission resource
  • the third periodic transmission resource includes the third transmission resource
  • the first periodic feedback resource is a periodic feedback resource in the first periodic feedback resource set that corresponds to the third periodic transmission resource according to the first mapping relationship
  • the first periodic feedback resource set is configured by the first resource pool.
  • the transmission resources of the periodic service can be flexibly indicated to correspond to the feedback resources, thereby further improving the overall performance of the network.
  • the second device sends first indication information to the first device on a first transmission resource, where the first indication information is used to indicate whether the first data is invalid data.
  • the second device can send first indication information to the first device on the first transmission resource, and the first indication information is used to indicate that the first data of the second device on the first transmission resource is invalid data or an empty packet indication, so that when the first device determines the feedback information according to the data reception results on multiple transmission resources associated with the first feedback resource, the reception result of the first data on the first transmission resource can be excluded, and the sending of ACK information or NACK information is determined only according to whether the data is received and successfully decoded on other transmission resources, thereby improving the accuracy of the first device in determining the feedback information on the first feedback resource, while avoiding the problem of resource waste.
  • the second device receives activation information or deactivation information of the first device, the activation information or deactivation information is associated with the first transmission resource, the activation information is used to indicate that the second device receives feedback information from the first device on the first feedback resource, and the deactivation information is used to indicate that the second device receives feedback information from the first device on the second feedback resource, and the second feedback resource is a feedback resource corresponding to the first transmission resource determined according to the mapping relationship between the transmission resources and the feedback resources in the first resource pool.
  • the second device receives activation information or deactivation information of the first device, and the activation information is used to indicate that the first device and the second device feed back the first data through the first feedback resource configured by the first device, and the deactivation information is used to indicate that the first device and the second device feed back the first data through the second feedback resource configured in the resource pool and corresponding to the first transmission resource.
  • the activation information or deactivation information includes indication information of one or more transmission resources.
  • the activation information or deactivation information can further indicate activation or deactivation of different transmission resources.
  • the second device when the first device determines that the first transmission resource is occupied by other devices, the second device receives deactivation information from the first device. Alternatively, when the second device does not transmit data on the first transmission resource or reselects the resource, the second device receives deactivation information from the first device.
  • the method of determining feedback resources between devices can be flexibly adjusted according to interference conditions and load conditions, thereby improving the reliability of feedback information transmission.
  • the activation information or the deactivation information is associated with a first periodic transmission resource, and the first periodic transmission resource includes a first transmission resource.
  • the activation information includes a bit map
  • the deactivation information includes a bit map
  • the first bit in the bit map corresponds to the first transmission resource
  • the first bit When the first bit takes the first value, the first bit is used to indicate that the second device receives feedback information on the first feedback resource.
  • the first bit When the first bit takes the second value, the first bit is used to instruct the second device to receive feedback information on the second feedback resource.
  • the specific expression form of the activation information and the deactivation information can be indicated by the value of the bit in the bitmap.
  • the bits in the bitmap correspond to the transmission resources, for example, the first bit corresponds to the first transmission resource, the first bit takes the first value, and the first bit is used to indicate that the second device receives the feedback information of the first device on the first feedback resource; when the first bit takes the second value, the first bit is used to indicate that the second device receives the feedback information of the first device on the second feedback resource.
  • the activation information and the deactivation information are included in the media access control MAC control element information.
  • the second device sends first request information to the first device, where the first request information is used to request the first device to send activation information or deactivation information to the second device.
  • the second device can send the first request information to the first device, and the first request information is used to request the first device to send deactivation information to the second device, thereby reducing the complexity of processing by the first device.
  • a method for sending feedback information including: a first device sends first information to a second device, the first information includes information of a first transmission resource, the first transmission resource is used by the first device to receive first data of the second device, the first transmission resource is associated with a first feedback resource, a first feedback resource set includes the first feedback resource, configuration information of a first resource pool includes configuration information of the first feedback resource set, the first resource pool is configured for the first device and the second device, the first feedback resource is used by the first device to send first feedback information, and the first feedback information is NACK information; when the first device fails to successfully receive the first data on the first transmission resource, the first device sends the first feedback information to the second device.
  • the first device when the first device successfully decodes the first data on the first transmission resource, the first device skips sending feedback information to the second device, where the feedback information is used to indicate whether the first device successfully receives the first data.
  • the first device when the first device successfully receives the first data of the second device on the first transmission resource, the first device skips the operation of sending feedback information to the second device. That is, the first device does not send feedback information to the second device. That is, in the present application, the first device, as the receiver of the data, can configure the NACK-only feedback mode for the sender of the data, that is, the second device. Specifically, the first device sends NACK information to the second device only when it fails to receive or successfully decodes the first data, and when the first device successfully receives and decodes the first data, it may not send feedback information to the second device, thereby reducing the problem of reduced feedback information reliability caused by sending multiple feedback information to share the power equally.
  • the first information includes information of a first periodic transmission resource
  • the first periodic transmission resource includes a first transmission resource
  • the first information includes information of the first periodic transmission resource, and the first periodic transmission resource includes the first transmission resource, that is, an indication of a NACK-only feedback mode for periodic services, thereby improving the overall performance of the network.
  • a first device receives first indication information from a second device on a first transmission resource, the first indication information is used to indicate whether the first data is invalid data, and the first indication information is associated with the first data.
  • the first device when the first indication information is used to indicate that the first data is invalid data, the first device skips the operation of sending feedback information to the second device.
  • the second device when the second device has no data to be sent on the first transmission resource, the second device sends a first indication message to the first device on the first transmission resource, and the first indication message is used to indicate whether the first data is invalid.
  • the first device may not send feedback information to the second device, thereby reducing the amount of feedback information sent by the first device.
  • the first device sends activation information or deactivation information to the second device.
  • the activation information is used to indicate that: the first feedback resource is used by the first device to send the first feedback information, and when the first device fails to receive or successfully decode the first data on the first transmission resource, the first device sends the first feedback information to the second device on the first feedback resource;
  • the deactivation information is used to indicate that the first feedback resource is used for the first device to send second feedback information, where the second feedback information includes NACK information or ACK information, and the first device determines to send the second feedback information to the second device based on whether the first data is successfully decoded.
  • the activation information is further used to indicate that, when the first device successfully decodes the first data on the first transmission resource, the first device skips the operation of sending feedback information to the second device.
  • the activation information is used to instruct the first device to use the NACK-only feedback mode to feedback the first data, that is, when the first device receives and successfully decodes the first data, the first device skips the operation of sending feedback information to the second device, and when the first device does not receive or does not successfully decode the first data, the first device sends NACK information to the second device;
  • the deactivation information is used to deactivate the NACK-only feedback mode, that is, to instruct the first device to directly determine the second feedback information based on whether the first data is successfully decoded, and send the second feedback information to the second device on the first feedback resource.
  • the activation information and the deactivation information are used by the first device to indicate to the second device whether the first device provides feedback to the second device in a NACK-only mode.
  • the activation information or the deactivation information is associated with a first periodic transmission resource, and the first periodic transmission resource includes a first transmission resource.
  • the transmission resources of the periodic service can be flexibly indicated to the first device for providing feedback to the second device on whether to adopt the NACK-only mode.
  • the activation information includes a bit map
  • the deactivation information includes a bit map
  • the first bit in the bit map corresponds to the first transmission resource
  • the first bit is used to indicate that: the first feedback resource is used by the first device to send the first feedback information, and when the first device fails to receive or successfully decode the first data on the first transmission resource, the first device sends the first feedback information to the second device on the first feedback resource,
  • the first bit is used to indicate that the first feedback resource is used for the first device to send second feedback information, and the first device determines to send the second feedback information to the second device on the first feedback resource according to whether the first data is successfully decoded.
  • the first bit when the first bit is the first value, the first bit is used to indicate that, when the first device successfully decodes the first data on the first transmission resource, the first device skips the operation of sending feedback information to the second device.
  • the specific form of the activation information and the deactivation information can be indicated by the value of the bit in the bitmap.
  • the bit in the bitmap has a corresponding relationship with the transmission resource, and the specific value of the bit is used to indicate whether the first device adopts the NACK-only feedback mode to the second device on its corresponding transmission resource.
  • the activation information and the deactivation information are included in the media access control MAC control element information.
  • a first device receives first request information from a second device, where the first request information is used to request the first device to send deactivation information to the second device.
  • the second device when a NACK-only feedback mode is adopted between a first device and a second device, when the second device has no need to send data on a first transmission resource/first periodic transmission resource, the second device can send a first request information to the first device, and the first request information is used to request the first device to send deactivation information to the second device, thereby reducing the processing complexity of the first device.
  • a method for receiving feedback information is characterized by comprising:
  • the second device receives first information from the first device, where the first information includes information of a first transmission resource, the first transmission resource is used by the second device to send first data to the first device, the first transmission resource is associated with a first feedback resource, the first feedback resource set includes the first feedback resource, the configuration information of the first resource pool includes configuration information of the first feedback resource set, the first resource pool is a resource pool configured for the first device and the second device, the first feedback resource is used by the first device to send first feedback information, and the first feedback information is NACK information;
  • the second device receives first feedback information from the first device.
  • the first device when the first data is successfully decoded by the first device on the first transmission resource, the first device skips the operation of sending feedback information to the second device, and the second device does not receive the feedback information about the first data from the first device, that is, the second device does not need to perform the operation of receiving feedback information about the first data.
  • the first device when the first data is successfully received by the first device on the first transmission resource, the first device skips the operation of sending feedback information to the second device, that is, the second device cannot receive the first feedback information of the first device. That is, in the present application, the first device, as the receiver of the first data, can configure the NACK-only feedback mode for the sender of the first data, that is, the second device.
  • the second device will receive the NACK information from the first device only when the first device has not received or successfully decoded the first data; and after the first device successfully receives and decodes the first data, the first device does not send the first feedback information to the second device, that is, the second device cannot receive the first feedback information from the first device, thereby reducing the problem of reduced feedback information reliability caused by sending multiple feedback information to share the power equally.
  • the first information includes information of a first periodic transmission resource
  • the first periodic transmission resource includes a first transmission resource
  • the first information includes information of the first periodic transmission resource, and the first periodic transmission resource includes the first transmission resource, that is, an indication of a NACK-only feedback mode for periodic services, thereby improving the overall performance of the network.
  • the second device sends first indication information to the first device on a first transmission resource, where the first indication information is used to indicate whether the first data is invalid data, and the first indication information is associated with the first data.
  • the second device receives activation information or deactivation information of the first device
  • the activation information is used to indicate that after the second device sends the first data to the first device on the first transmission resource, the second device determines to receive the first feedback information of the first device on the first feedback resource, or the first device skips the operation of sending the feedback information, and the second device does not receive the feedback information about the first data;
  • the deactivation information is used to indicate that after the second device sends the first data to the first device on the first transmission resource, the second device determines to receive the second feedback information of the first device on the first feedback resource, and the second feedback information includes NACK information or ACK information.
  • the activation information is used to instruct the first device to use the NACK-only feedback mode to feedback the first data, that is, when the first device receives and successfully decodes the first data, the first device skips the operation of sending feedback information to the second device, and when the first device fails to successfully receive the first data, the first device sends the first feedback information (NACK information) to the second device;
  • the deactivation information is used to indicate the deactivation of the NACK-only feedback mode, that is, the first device directly determines the second feedback information based on whether the first data is successfully decoded, and sends the second feedback information (NACK information or ACK information) to the second device on the first feedback resource.
  • the activation information and the deactivation information are used by the first device to indicate to the second device that the first device provides feedback on whether the second device adopts the NACK-only mode.
  • the activation information or the deactivation information is related to a first periodic transmission resource, and the first periodic transmission resource includes a first transmission resource.
  • the transmission resources of the periodic service can be flexibly indicated to the first device for providing feedback to the second device on whether to adopt the NACK-only mode.
  • the activation information includes a bit map
  • the deactivation information includes a bit map
  • the first bit in the bit map corresponds to the first transmission resource, when the first bit is a first value, the first bit is used to indicate that the second device receives the first feedback information from the first device on the first feedback resource, or the second device cannot receive feedback information about the first data on the first feedback resource, and when the first bit is a second value, the first bit is used to indicate that the second device receives the second feedback information of the first device on the first feedback resource.
  • the specific form of the activation information and the deactivation information can be indicated by the value of the bit in the bitmap.
  • the bits in the bitmap correspond to the transmission resources, for example, the first bit corresponds to the first transmission resource, and the specific value of the bit is used to indicate whether the first device adopts the NACK-only feedback mode to the second device on the transmission resource corresponding to the bit.
  • the activation information and the deactivation information are included in the media access control MAC control element information.
  • the second device sends first request information to the first device, where the first request information is used to request the first device to send deactivation information to the second device.
  • the second device when a NACK-only feedback mode is adopted between a first device and a second device, when the second device has no need to send data on a first transmission resource/first periodic transmission resource, the second device can send a first request information to the first device, and the first request information is used to request the first device to send deactivation information to the second device, thereby reducing the processing complexity of the first device.
  • a device for sending feedback information comprising: a transceiver unit, used to send first information to a second device, the first information comprising information of a first transmission resource and information of a first feedback resource, the first transmission resource being associated with the first feedback resource, the first feedback resource set comprising the first feedback resource, the configuration information of the first resource pool comprising the configuration information of the first feedback resource set, the first resource pool being a resource pool configured for the first device and the second device, the first transmission resource being used for the first device to receive first data of the second device; the transceiver unit, used to send feedback information to the second device on the first feedback resource, the feedback information being used to indicate whether the first device has successfully received the first data.
  • the transceiver unit is further used to send second information to a third device, where the second information includes information about a second transmission resource and information about a first feedback resource, where the second transmission resource is used by the first device to receive second data from the third device, and the second transmission resource is associated with the first feedback resource;
  • a transceiver unit configured to send feedback information to a second device on a first feedback resource, where the feedback information is used to indicate whether the first device has successfully received the first data, including:
  • the transceiver unit is used to send feedback information to the second device and the third device on the first feedback resource, where the feedback information is used to indicate whether the first device has successfully received the first data and the second data.
  • the first information includes information about a first periodic transmission resource and information about a first periodic feedback resource
  • the first periodic transmission resource includes a first transmission resource
  • the first periodic feedback resource includes a first feedback resource
  • the information of the first periodic feedback resource includes information of the third periodic transmission resource.
  • the third periodic transmission resource includes the third transmission resource, the first periodic feedback resource is a periodic feedback resource in the first periodic feedback resource set that corresponds to the third periodic transmission resource according to the first mapping relationship, and the first periodic feedback resource set is configured by the first resource pool.
  • the information of the first feedback resource includes information of the third transmission resource
  • the first feedback resource is a feedback resource corresponding to the third transmission resource according to a first mapping relationship
  • the first mapping relationship is a mapping relationship between the transmission resources in the first resource pool and the feedback resources.
  • the transceiver unit is configured to receive third data of a fourth device on a third transmission resource
  • a transceiver unit is used to send feedback information to a fourth device on a first feedback resource, where the first feedback resource is determined based on a first mapping relationship and a third transmission resource, where the first mapping relationship is a mapping relationship between transmission resources in a first resource pool and feedback resources, and the feedback information is used to indicate whether the first device has successfully received the first data, the second data, and the third data.
  • a transceiver unit is configured to send feedback information to a second device and a third device on a first feedback resource, where the feedback information is used to indicate whether the transceiver unit has successfully received the first data and the second data, including:
  • the transceiver unit is configured to send NACK information to the second device and the third device on the first feedback resource:
  • the situations include:
  • the transceiver unit fails to receive or successfully decodes the first data on the first transmission resource; when the transceiver unit fails to receive or successfully decodes the second data on the second transmission resource.
  • the second information includes information about a second periodic transmission resource and information about a first periodic feedback resource
  • the second periodic transmission resource includes a second transmission resource
  • the first periodic feedback resource includes a first feedback resource
  • the transceiver unit is used to receive first indication information of the second device on the first transmission resource, the first indication information is used to indicate whether the first data is invalid data, and the first indication information is associated with the first data.
  • the transceiver unit is used to send activation information or deactivation information to the second device, the activation information or deactivation information is associated with the first transmission resource, the activation information is used to instruct the first device to send feedback information of the first data to the second device on the first feedback resource, and the deactivation information is used to instruct the first device to send feedback information of the first data to the second device on the second feedback resource.
  • the second feedback resource is a feedback resource in the first feedback resource set that corresponds to the first transmission resource according to the first mapping relationship, and the first mapping relationship is a mapping relationship between transmission resources and feedback resources in the first resource pool.
  • the activation information or the deactivation information is associated with a first periodic transmission resource, and the first periodic transmission resource includes a first transmission resource.
  • the activation information includes a bit map
  • the deactivation information includes a bit map
  • the first bit in the bit map corresponds to the first transmission resource
  • the first bit When the first bit takes the first value, the first bit is used to instruct the transceiver unit to send feedback information to the second device on the first feedback resource.
  • the first bit When the first bit takes the second value, the first bit is used to instruct the transceiver unit to send feedback information to the second device on the second feedback resource.
  • activation information and deactivation information are included in media access control MAC control element information.
  • the transceiver unit is further used to receive first request information from the second device, where the first request information is used to request the first device to send activation information or deactivation information to the second device.
  • a device for receiving feedback information including:
  • a transceiver unit configured to receive first information of a first device, the first information including information of a first transmission resource and information of a first feedback resource, the first transmission resource being associated with the first feedback resource, the first feedback resource set including the first feedback resource, the configuration information of the first resource pool including configuration information of the first feedback resource set, the first resource pool being a resource pool configured for the first device and the second device, and the first transmission resource being used by the second device to send first data to the first device;
  • the transceiver unit is further used to receive feedback information from the first device on the first feedback resource, where the feedback information is used to indicate whether the first device has successfully received the first data.
  • the first information includes information about a first periodic transmission resource and information about a first periodic feedback resource
  • the first periodic transmission resource includes a first transmission resource
  • the first periodic feedback resource includes a first feedback resource
  • the information of the first feedback resource includes information of the third transmission resource
  • the first feedback resource is a feedback resource corresponding to the third transmission resource according to the first mapping relationship
  • the first mapping relationship is a transmission resource in the first resource pool. The mapping relationship with the feedback resource.
  • the information of the first periodic feedback resource includes information of the third periodic transmission resource
  • the third periodic transmission resource includes the third transmission resource
  • the first periodic feedback resource is a periodic feedback resource in the first periodic feedback resource set that corresponds to the third periodic transmission resource according to the first mapping relationship
  • the first periodic feedback resource set is configured by the first resource pool.
  • the transceiver unit is further used to send first indication information to the first device on the first transmission resource, where the first indication information is used to indicate whether the first data is invalid data.
  • the transceiver unit is also used to receive activation information or deactivation information of the first device, the activation information or deactivation information is associated with the first transmission resource, the activation information is used to instruct the second device to receive feedback information from the first device on the first feedback resource, and the deactivation information is used to instruct the second device to receive feedback information from the first device on the second feedback resource, and the second feedback resource is a feedback resource corresponding to the first transmission resource determined according to the mapping relationship between the resources in the first resource pool and the feedback resources.
  • the activation information or the deactivation information is associated with a first periodic transmission resource, and the first periodic transmission resource includes a first transmission resource.
  • the activation information includes a bit map
  • the deactivation information includes a bit map
  • the first bit in the bit map corresponds to the first transmission resource
  • the first bit When the first bit takes the first value, the first bit is used to indicate that the transceiver unit receives feedback information on the first feedback resource.
  • the first bit When the first bit takes the second value, the first bit is used to instruct the transceiver unit to receive feedback information on the second feedback resource.
  • activation information and deactivation information are included in media access control MAC control element information.
  • the transceiver unit is further used to send first request information to the first device, where the first request information is used to request the first device to send activation information or deactivation information to the second device.
  • a device for sending feedback information including:
  • a transceiver unit configured to send first information to a second device, the first information including information of a first transmission resource, the first transmission resource being used by the first device to receive first data of the second device, the first transmission resource being associated with a first feedback resource, the first feedback resource set including the first feedback resource, the configuration information of the first resource pool including configuration information of the first feedback resource set, the first resource pool being a resource pool configured for the first device and the second device, the first feedback resource being used by the first device to send first feedback information, and the first feedback information being NACK information;
  • the transceiver unit When the transceiver unit fails to receive or successfully decodes the first data on the first transmission resource, the transceiver unit is configured to send first feedback information to the second device.
  • the transceiver unit when the transceiver unit successfully receives the first data on the first transmission resource, the transceiver unit skips sending feedback information to the second device, where the feedback information is used to indicate whether the transceiver unit successfully receives the first data.
  • the first information includes information of a first periodic transmission resource
  • the first periodic transmission resource includes a first transmission resource
  • the transceiver unit receives first indication information of the second device on the first transmission resource, the first indication information is used to indicate whether the first data is invalid data, and the first indication information is associated with the first data.
  • the transceiver unit when the first indication information is used to indicate that the first data is invalid data, the transceiver unit skips the operation of sending feedback information to the second device.
  • the transceiver unit is further configured to send activation information or deactivation information to the second device.
  • the activation information is used to indicate that: the first feedback resource is used by the transceiver unit to send the first feedback information, and when the transceiver unit fails to receive or successfully decode the first data on the first transmission resource, the transceiver unit sends the first feedback information to the second device on the first feedback resource;
  • the deactivation information is used to indicate that the first feedback resource is used by the transceiver unit to send the second feedback information, the second feedback information includes NACK information or ACK information, and the processing unit determines to send the second feedback information to the second device on the first feedback resource based on whether the first data is successfully decoded.
  • the activation information is used to instruct the transceiver unit to skip the operation of sending feedback information to the second device.
  • the activation information or the deactivation information is associated with a first periodic transmission resource, and the first periodic transmission resource includes a first transmission resource.
  • the activation information includes a bitmap
  • the deactivation information includes a bitmap
  • the first bit in the bitmap corresponds to the first transmission resource
  • the first bit is used to indicate that the first feedback resource is used for the transceiver unit to send the first feedback information, and when the transceiver unit fails to receive or successfully decode the first data on the first transmission resource, the transceiver unit sends the first feedback information to the second device on the first feedback resource;
  • the first bit is used to indicate that the first feedback resource is used by the transceiver unit to send the second feedback information, and the transceiver unit determines to send the second feedback information to the second device on the first feedback resource according to whether the first data is successfully decoded.
  • activation information and deactivation information are included in media access control MAC control element information.
  • the transceiver unit is further used to receive first request information from the second device, where the first request information is used to request the first device to send deactivation information to the second device.
  • a device for receiving feedback information comprising:
  • a transceiver unit configured to receive first information of a first device, the first information including information of a first transmission resource, the first transmission resource being used by the second device to send first data to the first device, the first transmission resource being associated with a first feedback resource, the first feedback resource set including the first feedback resource, the configuration information of the first resource pool including configuration information of the first feedback resource set, the first resource pool being a resource pool configured for the first device and the second device, the first feedback resource being used by the transceiver unit to send first feedback information, and the first feedback information being NACK information;
  • the transceiver unit is configured to receive first feedback information of the first device.
  • the first device when the first data is successfully decoded by the processing unit on the first transmission resource, the first device skips the operation of sending feedback information to the transceiver unit, and the transceiver unit does not receive feedback information about the first data from the first device, that is, the transceiver unit does not need to perform the operation of receiving feedback information about the first data.
  • the first information includes information of a first periodic transmission resource
  • the first periodic transmission resource includes a first transmission resource
  • a transceiver unit is used to send first indication information to a first device on a first transmission resource, where the first indication information is used to indicate whether the first data is invalid data, and the first indication information is associated with the first data.
  • the transceiver unit is used to receive activation information or deactivation information of the first device, the activation information is used to indicate that after the transceiver unit sends the first data to the first device on the first transmission resource, the processing unit determines to receive the first feedback information of the first device on the first feedback resource, or the first device skips the operation of sending the feedback information, and the transceiver unit does not receive feedback information about the first data; the deactivation information is used to indicate that after the transceiver unit sends the first data to the first device on the first transmission resource, the transceiver unit determines to receive the second feedback information of the first device on the first feedback resource, and the second feedback information includes NACK information or ACK information.
  • the activation information or the deactivation information is related to a first periodic transmission resource, and the first periodic transmission resource includes a first transmission resource.
  • the activation information includes a bit map
  • the deactivation information includes a bit map
  • the first bit in the bit map corresponds to the first transmission resource, when the first bit is a first value, the first bit is used to indicate that the transceiver unit receives the first feedback information from the first device on the first feedback resource, or the transceiver unit cannot receive feedback information about the first data on the first feedback resource, and when the first bit is a second value, the first bit is used to indicate that the transceiver unit receives the second feedback information of the first device on the first feedback resource.
  • activation information and deactivation information are included in media access control MAC control element information.
  • the transceiver unit is used to send first request information to the first device, where the first request information is used to request the first device to send deactivation information to the second device.
  • a device for sending and receiving feedback information is provided, the device is used to execute the method provided in the first aspect and/or the second aspect, or the device is used to execute the method provided in the third aspect and/or the fourth aspect.
  • the device may include a unit and/or module for executing the method provided in any one of the above implementations of the first aspect, the second aspect, the third aspect, and the fourth aspect.
  • Blocks such as processing units and/or transceiver units (or communication units).
  • the device is a communication device (such as a terminal device, or a network device).
  • the communication unit may be a transceiver or a transceiver unit, or an input/output interface; the processing unit may be at least one processor.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • the device is a chip, chip system or circuit used in a communication device (such as a terminal device or a network device).
  • a communication device such as a terminal device or a network device.
  • the communication unit may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip, chip system or circuit;
  • the processing unit may be at least one processor, processing circuit or logic circuit.
  • a communication device comprising: a memory for storing programs; and at least one processor for executing computer programs or instructions stored in the memory to execute a method provided in any one of the implementations of the first, second, third, and fourth aspects above.
  • the apparatus is a communication device (such as a terminal device or a network device).
  • the device is a chip, a chip system or a circuit used in a communication device (such as a terminal device or a network device).
  • the present application provides a processor for executing the methods provided in the above aspects.
  • a computer-readable storage medium which stores a program code for execution by a device, and the program code includes a method for executing any one of the above-mentioned implementation methods in the first aspect, the second aspect, the third aspect, and the fourth aspect.
  • a computer program product comprising instructions is provided.
  • the computer program product When the computer program product is run on a computer, the computer executes the method provided by any one of the implementation modes of the first, second, third and fourth aspects above.
  • a chip including a processor and a communication interface, the processor reads instructions stored in a memory through the communication interface, and executes a method provided by any one of the implementation modes of the first, second, third, and fourth aspects above.
  • the chip also includes a memory, in which a computer program or instructions are stored, and the processor is used to execute the computer program or instructions stored in the memory.
  • the processor is used to execute the method provided in any one of the implementation methods of the first aspect, the second aspect, the third aspect, and the fourth aspect above.
  • FIG1 is a schematic diagram of a system architecture used in an embodiment of the present application.
  • FIG2 is a schematic diagram of a time slot frame structure provided in an embodiment of the present application.
  • FIG3 is a schematic diagram of a mapping relationship of PSFCH resource positions provided in an embodiment of the present application.
  • FIG4 is a schematic diagram of a PSFCH resource division provided in an embodiment of the present application.
  • FIG5 is a schematic flowchart of a method for sending and receiving feedback information provided in an embodiment of the present application.
  • FIG6 is a schematic flowchart of another method for sending and receiving feedback information provided in an embodiment of the present application.
  • FIG7 is a schematic diagram of another mapping relationship of PSFCH resource positions provided in an embodiment of the present application.
  • FIG8 is a schematic flowchart of another method for sending and receiving feedback information provided in an embodiment of the present application.
  • FIG9 is a schematic diagram of another mapping relationship of PSFCH resource positions provided in an embodiment of the present application.
  • FIG. 10 is a schematic diagram of an apparatus 1000 for sending and receiving feedback information provided in an embodiment of the present application.
  • FIG. 11 is a schematic diagram of another apparatus 1100 for sending and receiving feedback information provided in an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a chip system 1200 provided in accordance with an embodiment of the present application.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • WCDMA Wideband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • UMTS universal mobile telecommunication system
  • 3GPP 3rd generation partnership project
  • the technical solution of the embodiment of the present application can also be applied to LTE sidelink system, LTE evolution sidelink, 5G sidelink system or 5G evolution sidelink system, future communication system (such as the sixth generation mobile communication system).
  • the technical solution provided by the present application can be applied to device to device (D2D) communication, vehicle to everything (V2X) communication, machine to machine (M2M) communication, machine type communication (MTC), and Internet of Things (IoT), communication system or other communication system.
  • D2D device to device
  • V2X vehicle to everything
  • M2M machine to machine
  • MTC machine type communication
  • IoT Internet of Things
  • WPAN wireless personal area network
  • WPAN can be used for communication between digital auxiliary devices in a small range such as telephones, computers, and auxiliary devices.
  • Technologies supporting wireless personal area networks include Bluetooth, ZigBee, ultra-wideband (UWB), infrared data association (IrDA) connection technology, home radio frequency (HomeRF), etc. Or sidelink communication system, WiFi communication system, etc. This application does not make specific limitations on this.
  • 5G NR systems With the development of wireless communication technology, mobile communication networks are gradually evolving towards 5G NR systems.
  • sidelink technology is also introduced, which means that terminal devices can communicate directly using wireless resources.
  • Sidelink is different from the uplink and downlink between the terminal device and the base station.
  • Sidelink refers to the link between the terminal devices, corresponding to the PC5 interface to realize the communication mode of direct communication of short-range services between terminal devices.
  • the physical channels of the Sidelink of the NR system are mainly composed of the physical sidelink control channel (PSCCH), the physical sidelink shared channel (PSSCH), the physical sidelink broadcast channel (PSBCH) and the physical sidelink feedback channel (PSFCH).
  • HARQ hybrid automatic repeat request
  • PSCCH is mainly used to transmit Sidelink control information, that is, it is used to transmit the first-order Sidelink control information (sidelink control information 1, SCI1)
  • PSSCH channel is mainly used to transmit the second-order Sidelink control information (sidelink control information 2, SCI2) and Sidelink data information.
  • FIG. 2 is a schematic diagram of a time slot frame structure provided in an embodiment of the present application.
  • a time slot includes 14 symbols, wherein the PSFCH occupies the 13th symbol (i.e., symbol 12) of the time slot, and before the symbol occupied by the PSFCH, a GAP symbol and an AGC symbol are also included.
  • the time slot when a time slot is configured with a PSFCH resource, we call the time slot a PSFCH time slot.
  • the configuration information in the resource pool will indicate which specific physical resource blocks (PRBs) on the PSFCH symbol can be used for PSFCH transmission.
  • PRBs physical resource blocks
  • the PSSCH receiving device will determine a PRB for PSFCH transmission based on the mapping relationship between PSSCH and PSFCH.
  • the mapping relationship can be based on the period of occurrence of PSFCH
  • the minimum time interval is determined by the minimum time slot interval between the PSSCH and the PSFCH it maps.
  • the minimum time interval can be configured by sl-MinTimeGapPSFCH.
  • the minimum time interval is mainly considered that the receiving device needs a certain amount of processing time to decode the PSSCH and generate feedback information on the PSFCH, so the mapping between the PSSCH and the PSFCH also needs to maintain a certain time interval. That is, after receiving the PSSCH, a terminal device sends the PSFCH in the first time slot that contains the PSFCH resource and is at least the above interval away from the last time slot of the PSSCH.
  • FIG3 is a schematic diagram of a mapping relationship of PSFCH resource positions provided in an embodiment of the present application.
  • PSFCH resources in time slots 0, 4, 8, 12, etc. (time slots 0 and 12 are not shown in FIG. 2 ), that is, time slots 0, 4, 8, 12, etc. are PSFCH time slots.
  • sl-MinTimeGapPSFCH is configured as 2 time slots, that is, the PSFCH in time slot 8 and its corresponding PSSCH need to meet the interval of at least two time slots, so the PSFCH in time slot 8 corresponds to the PSSCH in time slots 3 to 6, that is, if a sidelink device receives a PSSCH in time slots 3 to 6, the sidelink device sends ACK/NACK information on the corresponding PSFCH resource in time slot 8.
  • the PSFCH in time slot 12 corresponds to the PSSCH in time slots 7 to 10, and so on, which will not be repeated here.
  • PRBs that can be used for PSFCH are configured in the resource pool configuration information.
  • the sl-PSFCH-RB-Set parameter is used to configure PRBs are used to transmit PSFCH.
  • PRBs are assumed to have indexes
  • the mapping order of time slots and subchannel resources to PRBs for transmitting PSFCH can be first in time domain and then in frequency domain. As shown in FIG3 , assuming that two subchannels are configured on the resource pool, there are 8 PRBs in time slot 8 that can be used to transmit PSFCH (the 8 PRBs that can be used to transmit PSFCH may be non-continuous).
  • time slot 8 is associated with subchannel 0 and subchannel 1 in time slots 3 to 6, and the mapping of subchannels, time slots and PRBs is mapped in the order of time slot mapping first and then frequency domain mapping, that is, subchannel 0, time slot 0 corresponds to PRB0, subchannel 0, time slot 1 corresponds to PRB1, subchannel 0, time slot 2 corresponds to PRB2, subchannel 0, and time slot 3 corresponds to PRB3; subchannel 1, time slot 0 corresponds to PRB4, subchannel 1, time slot 1 corresponds to PRB5, subchannel 1, time slot 2 corresponds to PRB6, subchannel 1, and time slot 3 corresponds to PRB7.
  • subchannel 0 time slot 0 corresponds to PRB0&1
  • subchannel 0 time slot 1 corresponds to PRB2&3
  • subchannel 0 time slot 2 corresponds to PRB3&4
  • time slot 3 corresponds to PRB14&15.
  • the above example is only a mapping relationship between transmission resources (time slot x subchannel) and feedback resources in a resource pool, but the present application can also be applied to the mapping relationship between transmission resources and feedback resources in a resource pool determined according to other methods, and the present application does not limit this.
  • the PSFCH resource for replying ACK/NACK can be determined according to the time slot corresponding to the PSSCH and the PRBs corresponding to one or more subchannels.
  • a programmable logic controller (PLC) is mainly used as the first device, and a sensor or a traditional device (Sensor or Actuator, S/A) is used as the second device as an example for introduction, wherein the first device and the second device may also be other specific devices or equipment, which is not specifically limited in the present application.
  • PLC programmable logic controller
  • the Sidelink network can be considered to realize the communication between PLC and S/A.
  • PLC needs to communicate with a large number of S/As. For example, PLC collects a large amount of S/A status information or data, and then generates corresponding instructions to control S/As based on these status or data. After PLC receives these S/A data, HARQ feedback is generally required.
  • the first device When the first device needs to provide feedback on multiple PSSCHs on multiple PSFCHs, the first device needs to equally divide its maximum transmission power among the multiple PSFCHs, resulting in lower power allocated to each PSFCH and lower reliability of feedback information.
  • An embodiment of the present application provides a method for sending feedback information, thereby reducing the number of PSFCHs that the first device needs to send on one PSFCH symbol.
  • Fig. 4 is a schematic diagram of a PSFCH resource division provided in an embodiment of the present application. As shown in Fig. 4, more PSFCH resources are configured in the SL resource pool to achieve the ability to feed back a larger number of PESCHs.
  • the gray part is the symbol occupied by the PSFCH resource, that is, by reducing the period of the PSFCH resource, the first device can divert the PSFCH to be sent to multiple different time slots, thereby reducing the number of PSFCHs that the first device needs to send in each time slot or symbol.
  • an additional PSFCH symbol is added in a PSFCH time slot, so that the number of PSFCHs that need to be fed back by the first device on one PSFCH symbol can be reduced, thereby improving the accuracy of the feedback information.
  • an embodiment of the present application provides another method for sending and receiving feedback information, which can ensure that the number of PSFCHs that the first device needs to send on a PSFCH symbol is reduced without introducing additional PSFCH resource overhead.
  • FIG5 is a schematic flow chart of a method for sending and receiving feedback information provided by an embodiment of the present application. As shown in FIG5 , the method includes:
  • a first device sends first information to a second device.
  • the second device receives the first information from the first device.
  • the first information includes information about a first transmission resource and information about a first feedback resource.
  • the first transmission resource is associated with the first feedback resource, and the first transmission resource is used by the first device to receive first data from the second device.
  • the first device and the second device will be configured with a resource pool (e.g., a first resource pool), and the first resource pool will be configured with a first feedback resource set, such as the periodic feedback resource configured on the resource pool described above, and the first feedback resource set includes the first feedback resource.
  • the first feedback resource may include a time subunit in a time unit in the time domain, a frequency domain subunit in a frequency domain unit in the frequency domain, and a cyclic shift pair in the code domain.
  • the time unit may be, for example, a time slot (e.g., a PSFCH time slot), and the time subunit may be, for example, an OFDM symbol (e.g., a PSFCH symbol).
  • the frequency domain unit may be a subchannel, which is usually the smallest unit occupied by data transmission in the frequency domain in the Sidelink, and the frequency domain subunit may be a PRB, and a subchannel may include one or more PRBs.
  • the first information includes information about the first transmission resource and information about the first feedback resource, wherein after the second device receives the first information from the first device, it can transmit data on the first transmission resource indicated in the first information.
  • the first transmission resource may include one time slot or multiple time slots in the time domain, and may include one or more sub-channels in the frequency domain.
  • the description is mainly based on the example that the first transmission resource includes one time slot in the time domain and one or more continuous sub-channels in the frequency domain.
  • the first transmission resource is associated with the first feedback resource, that is, the first device can configure the feedback resource associated with the first transmission resource through the first information.
  • the second device after the second device sends the first data to the first device on the first transmission resource, it can receive the feedback information of the first device on the first feedback resource configured by the first device, instead of receiving the feedback information of the first device on the feedback resource determined according to the resource pool mapping relationship above, thereby improving the flexibility of the feedback resources.
  • the first information includes information of a first periodic transmission resource and information of a first periodic feedback resource, wherein the first periodic transmission resource includes the first transmission resource, and the first periodic feedback resource includes the first feedback resource.
  • the first information includes information about the first periodic transmission resource and information about the first periodic feedback resource
  • the first periodic transmission resource includes at least one transmission resource
  • the first periodic feedback resource includes at least one feedback resource, wherein at least one transmission resource is associated one-to-one with at least one feedback resource.
  • the information of the first periodic transmission resource includes at least one of the following: an offset of a time unit, a time unit period, a starting frequency domain unit position, and a number of frequency domain units.
  • the offset of the time unit is 1 time slot
  • the time unit period is 10 time slots
  • the starting frequency domain unit position is subchannel 1
  • the number of frequency domain units is If the amount is 3, the first periodic transmission resources are: subchannels 1 to 3 on time slot 1, subchannels 11 to 13 on time slot 11, subchannels 11 to 13 on time slot 21, etc.
  • the first device can allocate resources to the second device, the first device can determine the first transmission resource by itself and send the first information including the first transmission resource to the second device.
  • the information of the first feedback resource includes information of the third transmission resource.
  • the first feedback resource is a feedback resource corresponding to the third transmission resource according to a first mapping relationship.
  • the first mapping relationship is a mapping relationship between transmission resources and feedback resources in the first resource pool. The mapping relationship between transmission resources and feedback resources on the resource pool refers to the above description and will not be repeated here.
  • the first periodic feedback resource may include information of a third periodic transmission resource, the third periodic transmission resource includes a third transmission resource, and the first periodic feedback resource is a periodic feedback resource in the first periodic feedback resource set that corresponds to the third periodic transmission resource according to a first mapping relationship.
  • the second device sends first data to the first device on a first transmission resource.
  • the first device receives the first data from the second device on the first transmission resource.
  • the second device determines to send the first data to the first device on the first transmission resource according to the information of the first transmission resource included in the first information.
  • the second device may send first indication information to the first device on the first transmission resource, where the first indication information is used to indicate whether the first data is invalid data, and the first indication information is associated with the first data.
  • the second device sends a PSCCH to the first device on the first transmission resource, and the first device receives the PSCCH of the second device on the first transmission resource.
  • the PSCCH includes SCI1, and the PSCCH/SCI1 can be used to schedule the PSSCH, that is, after the first device detects the PSCCH, it can receive the PSSCH on the first transmission resource according to the SCI1 in the PSCCH, that is, both the PSCCH and the PSSCH can be located on the first transmission resource, and reference can be made to the frame structure in Figure 2.
  • SCI1 can indicate the number of frequency domain subchannels included in the PSSCH, DMRS pattern and other information.
  • the PSSCH may include SCI2 and the first data, wherein SCI2 may include Source ID and Destination ID, which are used to identify that the PSSCH is sent by the second device to the first device.
  • SCI1 and/or SCI2 may also include first indication information, indicating whether the data in the PSSCH is invalid data.
  • the first device receives the first indication information on the first transmission resource and determines that the PSSCH is sent to itself, the first device can, on the one hand, determine that the second device has sent the PSSCH to itself, and therefore will not feedback NACK to the second device due to failure to receive the PSSCH.
  • the first device can determine that the data in the PSSCH is invalid data, so even if part of the data in the PSSCH is decoded incorrectly, the first device does not need to feedback NACK to the second device, thereby avoiding unnecessary feedback and retransmission.
  • step 502 is an optional step.
  • the method shown in FIG. 5 may not include step 502, or the second device may send first indication information on the first transmission resource, and the first indication information may be used to indicate that the first data is invalid data.
  • the method shown in FIG. 5 includes step 502.
  • the first device sends feedback information to the second device on the first feedback resource.
  • the second device receives feedback information from the first device on the first feedback resource.
  • the second device may send the first data to the first device according to the information of the first transmission resource included in the first information.
  • the first device determines the feedback information according to whether the first data from the second device is successfully received on the first transmission resource (wherein the successful reception includes receiving the PSSCH after successfully detecting the PSCCH and successfully demodulating and decoding the SCI2 and data in the PSSCH), and sends the feedback information to the second device.
  • the feedback information is used to indicate whether the first device successfully receives the first data of the second device.
  • the second device sends data #1 on the first transmission resource, and the first device receives data #1 from the second device on the first transmission resource, which means that the first device successfully receives data #1 from the second device on the first transmission resource.
  • the first device sends feedback information to the second device on the first feedback resource, and the feedback information is ACK information.
  • the second device sends data #1 on the first transmission resource, and the first device does not receive or fails to successfully decode the data #1 from the second device on the first transmission resource, which means that the first device does not receive the data #1 from the second device on the first transmission resource, and the first device sends feedback information to the second device on the first feedback resource, and the feedback information is NACK information.
  • the ACK information in this application can also be called HARQ-ACK information or ACK
  • the NACK information can also be called HARQ-NACK information or NACK, which is not specifically limited in this application.
  • the first device may not send the feedback information.
  • the method may further include the following steps:
  • the first device sends activation information or deactivation information to the second device.
  • the second device receives activation information or deactivation information from the first device.
  • the activation information or deactivation information is associated with the first transmission resource, the activation information is used to instruct the first device to send feedback information of the first data to the second device on the first feedback resource, and the deactivation information is used to instruct the first device to send feedback information of the first data to the second device on the second feedback resource.
  • the second feedback resource is a feedback resource in the first feedback resource set that corresponds to the first transmission resource according to the first mapping relationship, and the first mapping relationship is a mapping relationship between transmission resources and feedback resources in the first resource pool.
  • the first device sends activation information or deactivation information to the second device, and the activation information is used to indicate that the first device and the second device feed back the first data through the first feedback resource configured by the first device, and the deactivation information is used to indicate that the first device and the second device feed back the first data through the second feedback resource configured in the resource pool and corresponding to the first transmission resource.
  • the activation information or deactivation information includes indication information of one or more transmission resources.
  • the activation information or deactivation information can further indicate activation or deactivation of different transmission resources.
  • the first device can configure multiple first transmission resources for the second device through the first information.
  • the activation information or deactivation information can be used to indicate which first transmission resources determine the feedback resource according to the first mapping relationship on the resource pool, and which first transmission resources determine the feedback resource according to the feedback resource configured in the first information.
  • the first device when the first device determines that the first transmission resource is occupied by other devices, the first device sends deactivation information to the second device.
  • the second device when the second device has no data to transmit on the first transmission resource, or the second device reselects resources, the first device may send deactivation information to the second device.
  • this step can flexibly adjust the way of determining feedback resources between devices according to interference conditions and load conditions through activation information and deactivation information, thereby improving the reliability of feedback information transmission.
  • the activation information or the deactivation information is associated with a first periodic transmission resource, and the first periodic transmission resource includes a first transmission resource.
  • the activation information includes a bit map
  • the deactivation information includes a bit map.
  • the first bit in the bit map corresponds to the first transmission resource.
  • the first bit takes a first value
  • the first bit is used to indicate that the first device sends feedback information to the second device on the first feedback resource
  • the first bit takes a second value
  • the first bit is used to indicate that the first device sends feedback information to the second device on the second feedback resource.
  • the bits in the bitmap correspond to transmission resources, for example, the first bit corresponds to the first transmission resource, the first bit takes a first value, and the first bit is used to indicate that the first device transmits feedback information on the first feedback resource; when the first bit takes a second value, the first bit is used to indicate that the first device transmits feedback information on the second feedback resource.
  • activation information and the deactivation information may be included in a Media Access Control (MAC) control element information, which is sent from the first device to the second device.
  • MAC Media Access Control
  • the first device receives first request information from the second device, where the first request information is used to request the first device to send the activation information or the deactivation information to the second device.
  • the second device may request the first device to send feedback information to the second device on the first feedback resource or the second feedback resource through the first request information.
  • the second device may send a first request information to the first device, where the first request information is used to request the first device to send deactivation information to the second device, thereby further reducing the processing complexity of the first device.
  • the first device may also receive different data from multiple different devices (e.g., two or more devices) on different transmission resources.
  • the amount of feedback information sent by the first device can be further reduced, thereby improving feedback reliability.
  • the method includes:
  • a first device sends first information to a second device.
  • the second device receives the first information from the first device.
  • the first information includes information of a first transmission resource and information of a first feedback resource.
  • the first transmission resource is associated with the first feedback resource, and the first transmission resource is used by the first device to receive the first data of the second device.
  • the first device sends second information to the third device.
  • the third device receives the second information from the first device.
  • the second information includes information of a second transmission resource and information of a first feedback resource
  • the second transmission resource is used for the first device to receive second data from the third device
  • the second transmission resource is associated with the first feedback resource
  • the first transmission resource is different from the second transmission resource.
  • the second device and the third device may be the same device or different devices.
  • the first information may include information about the first periodic transmission resource and information about the first periodic feedback resource.
  • the first periodic transmission resource includes the first transmission resource
  • the first periodic feedback resource includes the first feedback resource.
  • the second information may include information about the second periodic transmission resource and information about the first periodic feedback resource.
  • the second periodic transmission resource includes the second transmission resource
  • the first periodic feedback resource includes the first feedback resource.
  • step 601 and step 602 does not limit the order of step 601 and step 602, that is, step 601 and step 602 can be performed simultaneously, or step 602 can be performed before or after step 601, and the present application does not make any specific limitation on this.
  • the second device sends first data to the first device on the first transmission resource.
  • the first device receives the first data from the second device on the first transmission resource.
  • the second device determines to send the first data to the first device on the first transmission resource according to the information of the first transmission resource included in the first information.
  • the third device sends second data to the first device on the second transmission resource.
  • the first device receives second data from the third device on the second transmission resource.
  • the third device determines to send the second data to the first device on the second transmission resource according to the information of the second transmission resource included in the second information.
  • steps 601 to 604 are similar to the steps 501 and 502 in FIG. 5 , and the specific description can refer to the description in FIG. 5 , which will not be repeated here.
  • steps 603 and 604 are both optional steps, wherein when the second device and the third device have no data to be sent on the first transmission resource and the second transmission resource, the method described in FIG. 6 may not include steps 603 and 604.
  • step 603 and step 604 does not limit the order of step 603 and step 604, that is, step 603 and step 604 can be performed simultaneously, or step 604 can be performed before or after step 603, and the present application does not make any specific limitation on this.
  • the first device can configure the same feedback resources for the second device and the third device, thereby reducing the amount of feedback information that the first device needs to send, improving the transmission power of each feedback information, and thus improving the reliability of the feedback information.
  • the first device may also configure the same feedback resources for more devices, which will not be exemplified one by one here.
  • the fourth device sends third data to the first device on the third transmission resource.
  • the first device receives the third data of the fourth device on the third transmission resource.
  • the third transmission resource is a transmission resource having a first mapping relationship with the first feedback resource.
  • the first mapping relationship is a mapping relationship between transmission resources and feedback resources in the first resource pool, and the first mapping relationship is a mapping relationship between transmission resources and feedback resources configured by the system.
  • the first mapping relationship is a mapping relationship between transmission resources and feedback resources in the first resource pool.
  • the information of the first periodic feedback resource includes information of the third periodic transmission resource
  • the third periodic transmission resource includes the third transmission resource
  • the first periodic feedback resource is a periodic feedback resource in the first periodic feedback resource set that corresponds to the third periodic transmission resource according to the first mapping relationship
  • the first periodic feedback resource set is configured by the first resource pool.
  • the first device may also send corresponding indication information to the third device to indicate the third transmission resource and the first feedback resource, and the specific steps are not repeated here.
  • the first feedback resource is a feedback resource corresponding to the third transmission resource determined according to the first mapping relationship on the first resource pool
  • the third transmission resource is a transmission resource used by the third device to send the third data to the first device
  • other devices such as the fifth device The first device and the sixth device
  • the feedback resources determined by other devices will not conflict with the first feedback resource. Accordingly, the first device sending feedback information on the first feedback resource will not occupy feedback resources corresponding to other transmission resources, that is, there will be no resource conflict with the feedback resources of other devices.
  • the fourth device can be the same device as the second device, then the first transmission resource and the third transmission resource are the same transmission resource, or the fourth device can be the same device as the third device, then the second transmission resource and the third transmission resource are the same transmission resource.
  • the first device sends feedback information on the first feedback resource.
  • the first device determines multiple transmission resources according to the indication information sent to other devices in the aforementioned steps, receives data from multiple devices (two or more devices) on the multiple transmission resources, and the first device determines the feedback resource for sending feedback information according to the transmission resource carrying the data.
  • the first device shown in the above steps 603 and 605 can receive the first data and the third data sent by the second device and the fourth device on the first transmission resource and the third transmission resource, and the first device determines to send feedback information to the second device and the fourth device on the first feedback resource according to the first transmission resource and the third transmission resource.
  • the second device and the fourth device receive feedback information from the first device on the first feedback resource.
  • the third device can be used to indicate a class of third devices, that is, the third device can also include one or more devices, collectively referred to as third devices.
  • the second resource can also be used to indicate a class of second resources, that is, the second resource can also include one or more resources, collectively referred to as second resources, and the one or more devices included in the third device can send the second data to the first device on the one or more resources included in the second transmission resource, and receive feedback information from the first device on the first feedback resource.
  • the first device determines that the feedback resources corresponding to the first transmission resource, the second transmission resource and the third transmission resource are all first feedback resources, that is, the first device determines the feedback information according to the specific circumstances of the first data, the second data and the third data received on the first transmission resource, the second transmission resource and the third transmission resource, and sends the feedback information to the second device, the third device and the fourth device on the first feedback resource.
  • the first device sends feedback information to the second device, the third device and the fourth device on the first feedback resource, and the feedback information is used to indicate whether the first device successfully receives the first data of the second device, the second data of the third device and the third data of the fourth device.
  • the feedback information determined by the first device is ACK information; when the first device successfully receives and decodes the first data of the second device on the first transmission resource, the first device successfully receives and decodes the third data of the fourth device on the third transmission resource, and the first device does not receive the second data of the third device on the second transmission resource, then the feedback information determined by the first device is NACK information; when the first device successfully receives but fails to decode the first data of the second device on the first transmission resource, and the first device successfully receives and decodes the second data of the third device on the second transmission resource, and the first device successfully receives and decodes the third data of the fourth device on the third transmission resource, then the feedback information determined by the first device is NACK information; when the first device successfully receives but fails to decode the first data of the second device on the first transmission resource, and the first device successfully receives and decodes the second data of the third device on the second transmission resource, and the first device successfully receives and decodes the third data of the fourth device on the third transmission resource,
  • the feedback information sent by the first device to the second device, the third device, and the fourth device on the first feedback resource is NACK information.
  • the feedback information sent by the first device on the first feedback resource is ACK information.
  • the first device determines that the feedback information is NACK information
  • the first device sends the feedback information to the second device, the third device and the fourth device on the first feedback resource, and the second device, the third device and the fourth device will determine whether data retransmission is required based on the feedback information.
  • the second device, the third device, and the fourth device may also send empty packet indication information, and if one of the devices indicates that its data on the corresponding transmission resource is an empty packet, the first device does not consider the data corresponding to the device when determining the feedback information. That is, whether the feedback information is NACK information or ACK information has nothing to do with whether the first device receives or successfully decodes the data sent by the device on its corresponding transmission resource.
  • the first device may only receive the first data according to the second data sent by the third device. or, the third device indicates that the second data is an empty packet, then the first device can determine to send ACK information or NACK information on the first feedback resource only according to the first data sent by the second device and the third data sent by the fourth device.
  • the first feedback resource can be associated with multiple transmission resources, and the first device can send the same feedback information to multiple devices transmitting different data on the same feedback resource, thereby reducing the amount of feedback information sent by the first device and improving the reliability of feedback and resource utilization.
  • the first transmission resource included in the information #A sent by the PLC to the first S/A is the resource corresponding to PSSCH0, and the first feedback resource is the resource corresponding to the rightmost PRB 0;
  • the first transmission resource included in the information #B sent by the PLC to the second S/A is the resource corresponding to PSSCH 1, and the first feedback resource is the resource corresponding to the rightmost PRB0;
  • the first transmission resource included in the information #C sent by the PLC to the third S/A is the resource corresponding to PSSCH 2, and the first feedback resource is the resource corresponding to the rightmost PRB0;
  • the first transmission resource included in the information #D sent by the PLC to the fourth S/A is the resource corresponding to PSSCH 3, and the first feedback resource is the resource corresponding to the rightmost PRB0.
  • the PLC sends information #E to the fifth S/A, and the information #E includes that the first transmission resource is the resource corresponding to PSSCH4, and the first feedback resource is the resource corresponding to the rightmost PRB 4;
  • the PLC sends information #F to the sixth S/A, and the information #F includes that the first transmission resource is the resource corresponding to PSSCH5, and the first feedback resource is the resource corresponding to the rightmost PRB 4;
  • the PLC sends information #G to the seventh S/A, and the information #G includes that the first transmission resource is the resource corresponding to PSSCH6, and the first feedback resource is the resource corresponding to the rightmost PRB 4;
  • the PLC sends information #H to the eighth S/A, and the information #H includes that the first transmission resource is the resource corresponding to PSSCH7, and the first feedback resource is the resource corresponding to the rightmost PRB 4.
  • PLC divides the 8 S/As into two groups, namely, the first S/A to the fourth S/A are the first group, and the fifth S/A to the eighth S/A are the second group.
  • the S/As in each group correspond to the same feedback resources (PRB 0, PRB 4).
  • the PLC sends its PSFCH to the PSSCH sent by a group of S/As for feedback, thereby reducing the number of PSFCHs sent by the PLC.
  • the feedback resources corresponding to each group are the feedback resources determined by the PSSCH of one of the S/As in the group according to the resource pool configuration mapping relationship.
  • PRB 0 in the first group is the feedback resource position corresponding to PSSCH 0 according to the resource pool configuration mapping relationship, so it will not conflict with the feedback resources of other devices.
  • FIG8 is a schematic flow chart of another method for sending and receiving feedback information provided in an embodiment of the present application. As shown in FIG8 , the method includes:
  • the first device sends information #1 to the second device.
  • the second device receives information #1 from the first device.
  • the information #1 includes information of a first transmission resource, where the first transmission resource is used by a first device to receive first data of a second device.
  • the information #1 is used to indicate that the first device will perform a NACK-only feedback mode on the first transmission resource for the data sent by the second device.
  • the first transmission resource may include one time slot or multiple time slots in the time domain, and may include one or more sub-channels in the frequency domain.
  • the description is mainly based on the example that the first transmission resource includes one time slot in the time domain and one or more continuous sub-channels in the frequency domain.
  • information #1 includes information of a first periodic transmission resource, and the first periodic transmission resource includes a first transmission resource.
  • the information #1 includes information of the first periodic transmission resource, and the first periodic transmission resource includes the first transmission resource, that is, the transmission resource of the periodic service can be flexibly indicated to improve the overall performance of the network.
  • the information of the first periodic transmission resource may include the offset of the time unit, the period of the first periodic transmission resource (for example, the number of time units included), the starting subchannel position of the first periodic transmission resource in the frequency domain, the number of subchannels included, and other information.
  • the second device sends first data to the first device on a first transmission resource.
  • the first device receives the first data of the second device on the first transmission resource.
  • the second device determines to send the first data to the second device on the first transmission resource based on the information of the first transmission resource included in the information #1.
  • the second device sending the first data to the first device on the first transmission resource may include: the second device sending PSCCH and PSSCH on the first transmission resource, wherein the PSCCH includes SCI1, and the PSCCH/SCI1 is used to schedule the PSSCH, for example, including the frequency domain position of the PSSCH, the priority of the data in the PSSCH
  • the PSSCH includes SCI2 and the first data, wherein SCI2 may include a source ID corresponding to the second device, a destination ID corresponding to the first device, and the like.
  • the second device may send first indication information to the first device on the first transmission resource, the first indication information being used to indicate whether the first data is invalid data or whether the first data portion is an empty packet, and the first indication information is associated with the first data. For example, the second device indicates whether the first data is invalid data in SCI1 or SCI2.
  • the second device when the second device has no data to send on the first transmission resource, the second device sends a first indication message to the first device on the first transmission resource, and the first indication message is used to indicate whether the first data is invalid.
  • the first device may also not send feedback information to the second device, thereby reducing the amount of feedback information sent by the first device.
  • step 802 is an optional step.
  • the method shown in FIG8 may not include step 802, or the second device may send first indication information on the first transmission resource, and the first indication information may be used to indicate that the first data is invalid data.
  • the method shown in FIG8 includes step 802.
  • the first device determines whether to send feedback information #1 to the second device.
  • the first device determines whether to send feedback information #1 to the second device according to the reception result on the first transmission resource, where the feedback information #1 only includes NACK information.
  • the first device first performs a blind detection of the PSCCH on the first transmission resource. If the PSCCH is detected, the PSSCH is received according to the SCI1 in the PSCCH.
  • the PSSCH includes SCI2 and data (e.g., transmission block, TB). If the source ID in SCI2 corresponds to the second device and the destination ID corresponds to the first device, the data in the PSSCH is the first data sent by the second device to the first device.
  • the first device performs NACK-only mode feedback for the signal received on the first transmission resource, and further, depending on whether the first data from the second device is successfully received, the following two situations may be included:
  • the first device sends feedback information #1 to the second device, where the feedback information #1 is NACK information.
  • the second device receives feedback information #1 from the first device.
  • the first device when the first device does not receive the first data on the first transmission resource (for example, PSCCH is not detected, or PSCCH is detected but the ID in SCI2 does not correspond to the second device and the first device), or when the first device receives the first data on the first transmission resource but fails to successfully decode the first data, the first device sends feedback information #1 to the second device, and the feedback information #1 is used to indicate that the first device did not receive or failed to successfully decode the first data of the second device.
  • the first device sends feedback information #1 to the second device, and the feedback information #1 is used to indicate that the first device did not receive or failed to successfully decode the first data of the second device.
  • the first device can determine that the first data sent by the second device to the first device is not received, and the first device sends feedback information #1 on the first feedback resource, and the feedback information #1 is NACK information.
  • the first device when the first device detects PSCCH on the first transmission resource, and also detects that the source ID and destination ID in SCI2 also correspond to the second device and the first device respectively, the first device can determine to receive the first data sent by the second device to the first device on the first transmission resource, and then the first device can decode the first data. If the decoding is unsuccessful, the first device sends feedback information #1 on the first feedback resource, and the feedback information #1 is NACK information.
  • the first device determines that the first data is not successfully received or the first data is not successfully decoded on the first transmission resource
  • the first device sends feedback information #1 to the second device on the feedback resource corresponding to the first transmission resource (e.g., the first feedback resource).
  • the feedback information #1 is used to indicate that the first device has not successfully received or decoded the first data.
  • the second device can resend the first data to the first device on the first transmission resource.
  • the feedback resource may be a feedback resource configured by the system/resource pool and having a mapping relationship with the first transmission resource, or the feedback resource may be a feedback resource similar to that indicated by the first device in FIG. 5 through indication information and having an associated relationship with the first transmission resource, or the feedback resource may be a feedback resource indicated by a network device through indication information and having an associated relationship with the first transmission resource, and this application does not impose any specific restrictions on this.
  • the first device skips the operation of sending feedback information to the second device.
  • the first device when the first device successfully receives the first data on the first transmission resource and successfully decodes the first data, the first device skips the operation of sending feedback information to the second device. That is, the first device does not need to send feedback information to the second device.
  • the feedback information is used to indicate whether the first device successfully receives the first data.
  • the first device when the first device successfully receives and successfully decodes the first data on the first transmission resource, the first device skips the operation of sending feedback information to the second device.
  • step 803#B is an internal implementation process of the first device.
  • the first device After the first device successfully receives the first data of the second device on the first transmission resource and successfully decodes the first data, the first device does not subsequently perform any operation on the feedback information of the first data, that is, in the specific operation implementation process, there is no transmission operation with feedback information between the first device and the second device.
  • the first device may not send feedback information.
  • the method may further include the following steps 804 and 805:
  • the first device sends activation information or deactivation information to the second device.
  • the second device receives activation information or deactivation information from the first device.
  • the activation information is used to activate the NACK-only feedback mode between the first device and the second device
  • the deactivation information is used to deactivate the NACK-only feedback mode between the first device and the second device.
  • the activation information is used to indicate that: when the first device successfully receives and decodes the first data on the first transmission resource, the first device skips the operation of sending feedback information to the second device, that is, the first device executes the above step 803#B.
  • the activation information is also used to indicate that: when the first device fails to successfully receive the first data on the first transmission resource, or successfully receives but fails to decode the first data, the first device sends feedback information #1 to the second device, that is, the first device executes the above step 803#A.
  • the deactivation information is used to instruct the first device to determine feedback information #2 based on whether the first data is successfully decoded on the first transmission resource, and send the feedback information #2 to the second device, and the feedback information #2 includes ACK information or NACK information.
  • the first device successfully decodes the first data on the first transmission resource
  • the first device sends feedback information #2 to the second device on the first transmission resource
  • the feedback information #2 includes ACK information
  • the first device fails to successfully decode the first data on the first transmission resource
  • the first device sends feedback information #2 to the second device on the first transmission resource, and the feedback information #2 includes NACK information.
  • the activation information or the deactivation information is associated with a first periodic transmission resource, and the first periodic transmission resource includes a first transmission resource.
  • the activation information includes a bit map
  • the deactivation information includes a bit map
  • the first bit in the bit map corresponds to the first transmission resource, and when the first bit takes a first value, the first bit is used to indicate: when the first device does not receive or successfully decodes the first data on the first transmission resource, the first device sends feedback information #1 to the second device on the first feedback resource; when the first device successfully decodes the first data on the first transmission resource, the first device skips the operation of sending feedback information to the second device; when the first bit takes a second value, the first bit is used to indicate that the first device determines to send feedback information #2 to the second device based on whether the first data is successfully decoded.
  • the activation information includes a bit map
  • the deactivation information includes a bit map
  • the first bit in the bit map corresponds to the first periodic transmission resource
  • the first periodic transmission resource includes the first transmission resource
  • the bits in the bitmap correspond to the transmission resources.
  • the first bit corresponds to the first transmission resource.
  • the first bit is used to indicate that if the first device successfully decodes the first data of the second device on the first transmission resource, the first device executes the above step 803#B; if the first device fails to successfully receive or receives but fails to successfully decode the first data of the second device on the first transmission resource, the first device executes the above step 804#A.
  • the first bit takes the second value
  • the first bit is used to indicate that the first device sends ACK information or NACK information to the second device based on whether the first data of the second device is successfully decoded on the first transmission resource.
  • activation information and the deactivation information may be included in a Media Access Control (MAC) control element information, which is sent from the first device to the second device.
  • MAC Media Access Control
  • the first device receives first request information from the second device, where the first request information is used to request the first device to send the activation information or the deactivation information to the second device.
  • the second device can request the first device whether to only perform feedback on the situation where the first device fails to successfully receive the first data through the first request information.
  • the second device sends a first request message to the first device, and the first request message is used to request the first device to send deactivation information to the second device.
  • the second device can send a first request message to the first device, and the first request message is used to request the first device to send activation information to the second device to request activation of the NACK-only feedback mode.
  • the second device sends a first request message to the first device, and the first request message is used to request the first device to send deactivation information to the second device to request to deactivate the NACK-only feedback mode, thereby reducing the processing complexity of the first device.
  • the method shown in FIG. 8 will be exemplarily introduced below in combination with a schematic diagram of a mapping relationship of PSFCH resource positions shown in FIG. 9 , taking the first device as a PLC and the second device as an S/A as an example.
  • the information #1a sent by the PLC to the first S/A includes that the first transmission resource is the resource corresponding to PSSCH0, and the first feedback resource is the resource corresponding to the rightmost PRB0;
  • the information #1b sent by the PLC to the second S/A includes that the first transmission resource is the resource corresponding to PSSCH 1, and the first feedback resource is the resource corresponding to the rightmost PRB1;
  • the information #1c sent by the PLC to the third S/A includes that the first transmission resource is the resource corresponding to PSSCH2, and the first feedback resource is the resource corresponding to the rightmost PRB2;
  • the information #1d sent by the PLC to the fourth S/A includes that the first transmission resource is the resource corresponding to PSSCH 3, and the first feedback resource is the resource corresponding to the rightmost PRB3...
  • the information #1h sent by the PLC to the eighth S/A includes that the first transmission resource is the resource corresponding to
  • the PLC when the PLC successfully receives and decodes the PSSCH on a transmission resource, the PLC skips the operation of sending feedback information to the S/A, that is, it will not send feedback information to the S/A. If the PLC does not successfully receive or successfully receives but fails to decode the corresponding data on the first transmission resource, the PLC will send NACK information to the S/A on the feedback resource.
  • the position of the feedback resource can be determined according to the mapping relationship configured by the resource pool and the position of the transmission resource of the S/A. For example, in Figure 8, since only 3 PSSCHs are not successfully received, the PLC only needs to send 3 NACK messages, while the prior art needs to send 8 feedback messages. In comparison, the embodiment of the present application can reduce the number of PSFCHs sent by the PLC.
  • a device terminal device or network device
  • components of the device such as chips or circuits
  • the embodiments of the present application also provide corresponding devices, which include modules for executing the corresponding methods in the above-mentioned method embodiments.
  • the module can be software, hardware, or a combination of software and hardware. It can be understood that the technical features described in the above-mentioned method embodiments are also applicable to the following device embodiments.
  • Fig. 10 is a schematic block diagram of a device for sending and receiving feedback information provided by an embodiment of the present application.
  • the device 1000 includes a transceiver unit 1010, which can be used to implement corresponding communication functions.
  • the transceiver unit 1010 can also be called a communication interface or a communication unit.
  • the device 1000 may further include a processing unit 1020, and the processing unit 1020 may be used for performing data processing.
  • the device 1000 also includes a storage unit, which can be used to store instructions and/or data.
  • the processing unit 1020 can read the instructions and/or data in the storage unit so that the device implements the actions of different terminal devices in the aforementioned method embodiments, for example, the actions of the first device and the second device.
  • the device 1000 can be used to execute the actions performed by the first device and the second device in the above method embodiments.
  • the device 1000 can be the first device, the second device, or a component of the first device and the second device.
  • the transceiver unit 1010 is used to execute the transceiver related operations of the first device and the second device in the above method embodiments
  • the processing unit 820 is used to execute the processing related operations of the first device and the second device in the above method embodiments.
  • the device 1000 here is embodied in the form of a functional unit.
  • the term "unit” here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a merged logic circuit and/or other suitable components that support the described functions.
  • ASIC application specific integrated circuit
  • processor such as a shared processor, a dedicated processor or a group processor, etc.
  • memory for executing one or more software or firmware programs, a merged logic circuit and/or other suitable components that support the described functions.
  • the device 1000 may be specifically the first device or the second device in the above-mentioned embodiments, and may be used to execute the various processes and/or steps corresponding to the first device or the second device in the above-mentioned method embodiments, or the device 1000 may be specifically the first device or the second device in the above-mentioned embodiments, and may be used to execute the above-mentioned methods.
  • the various processes and/or steps corresponding to the first device and the second device in the embodiment are not described again here.
  • the apparatus 1000 of each of the above-mentioned schemes has the function of implementing the corresponding steps performed by the first device and the second device in the above-mentioned method, or the apparatus 1000 of each of the above-mentioned schemes has the function of implementing the corresponding steps performed by the first device and the second device in the above-mentioned method.
  • the functions can be implemented by hardware, or by hardware executing corresponding software implementations.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the transceiver unit can be replaced by a transceiver (for example, the sending unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor, respectively performing the sending and receiving operations and related processing operations in each method embodiment.
  • the transceiver unit can be replaced by a transceiver (for example, the sending unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor, respectively performing the sending and receiving operations and related processing operations in each method embodiment.
  • transceiver unit 1010 can also be a transceiver circuit (for example, can include a receiving circuit and a sending circuit), and the processing unit can be a processing circuit.
  • the device in FIG. 10 may be a network element or device in the aforementioned embodiment, or may be a chip or a chip system, such as a system on chip (SoC).
  • the transceiver unit may be an input and output circuit or a communication interface; the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip. This is not limited here.
  • an embodiment of the present application provides another communication device 1100.
  • the device 1100 includes a processor 1110, the processor 1110 is coupled to a memory 1120, the memory 1120 is used to store computer programs or instructions and/or data, and the processor 1110 is used to execute the computer program or instructions stored in the memory 1120, or read the data stored in the memory 1120, so as to execute the methods in the above method embodiments.
  • processors 1110 there are one or more processors 1110 .
  • the memory 1120 is one or more.
  • the memory 1120 is integrated with the processor 1110 or provided separately.
  • the device 1100 further includes a transceiver 1130, and the transceiver 1130 is used for receiving and/or sending signals.
  • the processor 1110 is used for controlling the transceiver 1130 to receive and/or send signals.
  • the apparatus 1100 is used to implement the operations performed by the first device and the second device in the above method embodiments.
  • the processor 1110 is used to execute the computer program or instructions stored in the memory 1120 to implement the relevant operations of the first control plane device in each method embodiment above.
  • the method of the first device in any one of the embodiments shown in Figures 5 to 9, or the method of the second device in any one of the embodiments shown in Figures 5 to 9.
  • processors mentioned in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • DSP digital signal processors
  • ASIC application-specific integrated circuits
  • FPGA field programmable gate arrays
  • a general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.
  • the memory mentioned in the embodiments of the present application may be a volatile memory and/or a non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory may be a random access memory (RAM).
  • a RAM may be used as an external cache.
  • RAM includes the following forms: static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct rambus RAM (DR RAM).
  • SRAM static RAM
  • DRAM dynamic RAM
  • SDRAM synchronous DRAM
  • DDR SDRAM double data rate SDRAM
  • ESDRAM enhanced SDRAM
  • SLDRAM synchronous link DRAM
  • DR RAM direct rambus RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) can be integrated into the processor.
  • memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.
  • an embodiment of the present application provides a chip system 1200 .
  • the chip system 1200 (or may also be referred to as a processing system) includes a logic circuit 1210 and an input/output interface 1220 .
  • the logic circuit 1210 can be a processing circuit in the chip system 1200.
  • the logic circuit 1210 can be coupled to the storage unit and call the instructions in the storage unit so that the chip system 1200 can implement the methods and functions of each embodiment of the present application.
  • the input/output interface 1220 can be an input/output circuit in the chip system 1200, outputting information processed by the chip system 1200, or inputting data or signaling information to be processed into the chip system 1200 for processing.
  • the chip system 1200 is used to implement the operations performed by the first device and the second device in the above method embodiments.
  • the logic circuit 1210 is used to implement operations related to processing by the first device in the above method embodiments, such as operations related to processing by the first device in any one of the embodiments shown in Figures 5 to 9;
  • the input/output interface 1220 is used to implement operations related to sending and/or receiving by the first device in the above method embodiments, such as operations related to sending and/or receiving performed by the first device in any one of the embodiments shown in Figures 5 to 9.
  • An embodiment of the present application also provides a computer-readable storage medium on which computer instructions for implementing the methods executed by the first device and the second device in the above-mentioned method embodiments are stored.
  • the computer when the computer program is executed by a computer, the computer can implement the methods performed by the first device and the second device in each embodiment of the above method.
  • An embodiment of the present application also provides a computer program product, comprising instructions, which, when executed by a computer, implement the methods performed by the first device and the second device in the above-mentioned method embodiments.
  • the disclosed devices and methods can be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer can be a personal computer, a server, or a network device, etc.
  • the computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center.
  • the computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media integrations.
  • the available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state disk (SSD)).
  • the aforementioned available medium includes, but is not limited to, various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

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Abstract

本申请实施例提供了一种发送和接收反馈信息的方法，该方法包括：第一设备向第二设备发送第一信息，该第一信息包括第一传输资源的信息和第一反馈资源的信息。该第一传输资源与第一反馈资源相关联。其中，第一传输资源用于第一设备接收第二设备的第一数据。该第一设备在该第一反馈资源上向该第二设备发送反馈信息，该反馈信息用于指示该第一设备是否成功接收到该第一数据。本申请通过第一信息指示第一设备与第二设备之间的第一传输资源和第一反馈资源，使得第一设备与第二设备之间传输反馈信息使用的资源位置更加灵活。

Description

发送和接收反馈信息的方法和装置
本申请要求于2022年11月28日提交中国专利局、申请号为202211499581.9、申请名称为“一种反馈信道发送方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
本申请要求于2023年02月17日提交中国专利局、申请号为202310175502.7、申请名称为“发送和接收反馈信息的方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信领域，并且更具体地，涉及一种发送反馈信息的方法和装置，一种接收反馈信息的方法和装置。
背景技术
侧行链路(Sidelink简称SL)是通信系统中使能不通过基站实现设备到设备(device to device，D2D)直接通信的重要技术，举例来说，通信系统可以是长期演进(long term evolution，LTE)系统或第五代移动通信新无线(the fifth generation new radio，5G NR)系统等。由于设备和设备之间的传输不需要通过基站转发，Sidelink可以实现更短的延时，更高的空间复用效率以及更低的核心网负载。在车联万物(vehicle to everything，V2X)，智能家居，短距传输，虚拟/增强现实(virtual/augmented reality，VR/AR)，智慧工厂等局部通信需求比较高的场景中有着巨大的作用。
在SL通信传输的过程中，设备会被配置资源池，在该资源池的配置信息中包括物理侧行链路反馈信道(physical sidelink feedback channel，PSFCH)的配置信息，PSFCH能够用于承载侧行反馈控制信息，包括侧行混合自动重传请求(hybrid automatic repeat request，HARQ)。
其中，资源池的配置信息中还包括PSFCH出现的周期，即每隔多少个时隙会出现一个包含PSFCH资源的时隙。当设备接收物理侧行链路共享信道(physical sidelink shared channel，PSSCH)之后，设备根据资源池的配置信息用于确定发送反馈信息的PSFCH资源。具体地，例如设备先检测物理侧行链路控制信道(physical sidelink control channel，PSCCH)，根据PSCCH中的侧行控制信息(Sidelink control information，SCI)接收PSSCH。当设备接收到PSSCH之后，可以根据资源池的配置信息确定该PSSCH对应的时隙以及一个或者多个子信道对应的物理资源块(physical resource block，PRB)来确定用于发送反馈信息的PSFCH资源。
现有技术中，用于发送反馈信息的PSFCH资源是通过系统配置的，即资源池上会提前配置时隙以及子信道对应的发送反馈信息的PSFCH资源。如果设备按照系统配置的PSSCH对应的PSFCH资源发送PSSCH的反馈信息，会导致资源配置的灵活性较差。
发明内容
本申请实施例提供一种电力线通信的方法，能够降低系统维护多播组成员的资源开销，节省资源。
第一方面，提供了一种电力线通信的方法，该方法包括：第一节点接收第一多播帧，第一多播帧包括多播成员本申请实施例提供一种发送和接收反馈信息的方法，能够使得发送和接收反馈信息占用的反馈资源更加灵活。
第一方面，提供了一种发送反馈信息的方法，该方法包括：第一设备向第二设备发送第一信息，第一信息包括第一传输资源的信息和第一反馈资源的信息，第一传输资源与第一反馈资源相关联，第一反馈资源集合包括第一反馈资源，第一资源池的配置信息包括第一反馈资源集合的配置信息，第一资源池是为第一设备和第二设备配置的资源池，第一传输资源用于第一设备接收第二设备的第一数据；第一设备在第一反馈资源上向第二设备发送反馈信息，反馈信息用于指示第一设备是否成功接收到第一数据。
其中，第一资源池的配置信息包括第一反馈资源的信息，还可以理解为第一反馈资源集合为第一 资源池配置的，或者第一反馈资源集合与第一资源池的配置信息相关。也可以理解为第一反馈资源集合可以通过第一资源池的配置信息确定。例如，第一资源池的配置信息包括PSFCH的周期，假设PSFCH的周期配置为四个时隙(如0,4,8,12)，则对应的时隙0,4,8,12中包括传输PSFCH的资源；又例如，第一资源池的配置信息中包括PSFCH传输资源块集合的配置信息，资源块集合中包括一个或者多个物理资源块(physical resource block，PRB)用于传输PSFCH。
应理解，第一资源池是为第一设备和第二设备配置的，其中，第一资源池还可以是为其他设备(如第三设备)配置的，对此本申请不做具体限定。另外，第一设备可以包括一个或者多个设备，第二设备可以包括一个或者多个设备，对此本申请也不做具体限定。
根据本申请提供的发送反馈信息的方法，第一设备可以对第二设备配置与第一传输资源对应的反馈资源，而非按照现有技术中根据默认的传输资源和反馈资源间的映射关系确定反馈资源，提高了反馈资源的灵活性。另外，该第一反馈资源仍属于第一资源池配置的反馈资源集合，可以保持现有的侧行链路的帧结构不变。
结合第一方面，在一些可能实现方式中，该方法还包括：第一设备向第三设备发送第二信息，第二信息包括第二传输资源的信息和第一反馈资源的信息，第二传输资源用于第一设备接收来自第三设备的第二数据，第二传输资源与第一反馈资源相关联；
第一设备在第一反馈资源上向第二设备发送反馈信息，反馈信息用于指示第一设备是否成功接收到第一数据，包括：
第一设备在第一反馈资源上向第二设备和第三设备发送反馈信息，反馈信息用于指示第一设备是否成功接收到第一数据和第二数据。
基于上述技术方案，第一设备向第三设备发送第二信息，该第二信息包括第二传输资源的信息和第一反馈资源的信息，该第二传输资源与第一反馈资源相关联。可以看出，当第一设备在第一传输资源上接收来自第二设备的第一数据，第一设备在第二传输资源上接收来自第三设备的第二数据，该第一设备在相同的反馈资源上发送反馈信息，例如第一设备在同一个反馈资源(例如第一反馈资源)上发送反馈信息。即，第一设备在一个反馈资源上能够反馈来自多个不同设备通过多个不同的传输资源传输的数据，从而降低了第一设备发送反馈信息的数量，提高反馈的可靠性和资源利用率。
应理解，该第三设备可以是一个或者多个设备，当第三设备为多个设备时，第三设备发送的第二数据包括多个数据，其中，第一设备在第一反馈资源上发送的反馈信息用于指示该第一设备是否成功接收到第一数据以及第二数据。
结合第一方面，在一些可能实现方式中，第一信息包括第一周期性传输资源的信息和第一周期性反馈资源的信息，第一周期性传输资源包括第一传输资源，第一周期性反馈资源包括第一反馈资源。
在一种可能实现的方式，第一周期性传输资源中包括的至少一个传输资源与第一周期性反馈资源中包括的至少一个反馈资源是一一关联的。
基于上述技术方案，本申请能够对周期性业务的传输资源进行灵活的指示其对应的反馈资源，进一步地提高网络的整体性能。
结合第一方面，在一些可能实现方式中，第一反馈资源的信息包括第三传输资源的信息，第一反馈资源为根据第一映射关系与第三传输资源对应的反馈资源，第一映射关系为第一资源池中的传输资源与反馈资源的映射关系。
应理解，第一反馈资源的信息包括第三传输资源的信息，第一反馈资源是第一反馈资源集合中根据第一映射关系与第三传输资源对应的反馈资源。第一映射关系为第一资源池中传输资源与反馈资源的映射关系。
基于上述技术方案，第一反馈资源的信息包括第三传输资源的信息，通过第三传输资源和第一映射关系确定发送反馈信息的第一反馈资源。其中，从第一反馈资源集合中通过第一映射关系确定第三传输资源对应的反馈资源为第一反馈资源。
结合第一方面，在一些可能实现方式中，第一周期性反馈资源的信息包括第三周期性传输资源的信息，第三周期性传输资源包括第三传输资源，第一周期性反馈资源为第一周期性反馈资源集合中根据第一映射关系与第三周期性传输资源对应的周期性反馈资源，第一周期性反馈资源集合为第一资源池配置的。
基于上述技术方案，能够对周期性业务的传输资源进行灵活的指示其对应的反馈资源，进一步地 提高网络的整体性能。
结合第一方面，在一些可能实现方式中，该方法还包括：
第一设备在第三传输资源上接收第四设备的第三数据；
第一设备在第一反馈资源上向第四设备发送反馈信息，第一反馈资源是根据第一映射关系和第三传输资源确定的，第一映射关系为第一资源池中的传输资源与反馈资源的映射关系，该反馈信息用于指示第一设备是否成功接收到第一数据，第二数据和第三数据。
应理解，该第三传输资源是与第一反馈资源之间存在第一映射关系的传输资源。
基于上述技术方案，第一设备在第三传输资源上接收第四设备的第三数据，第一设备在第一反馈资源上向第四设备发送反馈信息。该第一设备在第一反馈资源上向不同的设备发送反馈信息。其中，该第一反馈资源是根据第一映射关系确定的与第三传输资源具有映射关系的反馈资源，因此如果其他设备(例如第五设备和第六设备)仍按照第一映射关系确定传输资源对应的反馈资源，第一设备在第一反馈资源上发送反馈信息不会占用其他传输资源对应的反馈资源，即不会和其他设备的反馈资源发生资源冲突。
结合第一方面，在一些可能实现方式中，第一设备在第一反馈资源上向第二设备和第三设备发送反馈信息，反馈信息用于指示第一设备是否成功接收到第一数据和第二数据,包括：
当满足以下情形至少之一时，第一设备在第一反馈资源上向第二设备和第三设备发送NACK信息，其中，情形包括：
当第一设备在第一传输资源上未接收到或者未成功解码第一数据；
当第一设备在第二传输资源上未接收到或者未成功解码第二数据。
基于上述方案，第一设备在第一反馈资源上发送反馈信息，第一设备确定与第一反馈资源相关联的第一传输资源和第二传输资源接收到的数据(第一数据和第二数据)均被成功接收并成功解码时，第一设备在第一反馈资源上向第二设备和第三设备发送的反馈信息为ACK信息；第一设备确定与第一反馈资源相关联的第一传输资源和第二传输资源接收到的数据(第一数据和第二数据)存在至少一个数据未被接收到或者未能成功解码时，第一设备在第一反馈资源上向第二设备和第三设备发送的反馈信息为NACK信息。
应理解，本申请可以进一步扩展到与第一反馈资源相关联的传输资源有多个(例如三个及以上)的场景，则第一设备成功接收到并成功对该多个传输资源上的数据解码时，该第一设备发送的反馈信息为ACK信息。第一设备未成功接收到或者未能成功解码该多个传输资源上一个或者多个数据时，该第一设备发送的反馈信息为NACK信息，进一步地降低发送反馈信息的数量，提高反馈的可靠性，以及提高了资源利用率。
结合第一方面，在一些可能实现方式中，第二信息包括第二周期性传输资源的信息和第一周期性反馈资源的信息，第二周期性传输资源包括第二传输资源。
基于上述技术方案，能够对周期性业务的传输资源进行灵活的指示其对应的反馈资源，进一步地提高网络的整体性能。
结合第一方面，在一些可能实现方式中，该方法还包括：
第一设备在第一传输资源上接收第二设备的第一指示信息，第一指示信息用于指示第一数据是否为无效数据，第一指示信息与第一数据相关联。
基于上述方案，当第二设备在第一传输资源上无数据传输需求时，为了避免第一设备认为自身未接收到第一传输资源上的数据并在第一反馈资源上发送NACK信息，从而导致与第一反馈资源关联的其他设备重发数据，浪费资源的问题。当第二设备在第一传输资源上无数据传输时，该第二设备在第一传输资源上向第一设备可以发送第一指示信息，该第一指示信息用于指示第二设备在第一传输资源上的第一数据为无效数据或者空包指示，使得第一设备根据第一反馈资源关联的多个传输资源上的数据接收结果确定反馈信息时，可以排除第一传输资源上的第一数据的接收结果，仅根据其他传输资源上是否接收到并成功解码数据来确定发送ACK信息或者NACK信息，从而提高第一设备在确定第一反馈资源上的反馈信息的准确性，同时避免了资源浪费的问题。
结合第一方面，在一些可能实现方式中，该方法还包括：
第一设备向第二设备发送激活信息或者去激活信息，激活信息或者去激活信息与第一传输资源相关联，激活信息用于指示第一设备在第一反馈资源上向第二设备发送第一数据的反馈信息，去激活信 息用于指示第一设备在第二反馈资源上向第二设备发送第一数据的反馈信息，第二反馈资源为第一反馈资源集合中根据第一映射关系与第一传输资源对应的反馈资源，第一映射关系为第一资源池中的传输资源与反馈资源的映射关系。
应理解，第一设备向第二设备发送激活信息或者去激活信息，该激活信息用于指示第一设备与第二设备之间通过第一设备配置的第一反馈资源对第一数据进行反馈，该去激活信息用于指示第一设备与第二设备之间通过资源池配置的与第一传输资源对应的第二反馈资源上对第一数据进行反馈。
还应理解，该激活信息或去激活信息包括一个或者多个传输资源的指示信息。该激活信息或者去激活信息能够进一步地对不同的传输资源进行激活或者去激活指示。
一种可能实现的方式，当第一设备确定该第一传输资源被其他设备占用时，该第一设备向第二设备发送去激活信息。或者，当第二设备在第一传输资源上不进行数据传输，或者进行了资源重选时，该第一设备向第二设备发送去激活信息。
基于上述技术方案，通过激活信息和去激活信息，能够灵活地根据干扰情况和负载情况调整设备间确定反馈资源的方式，提升反馈信息传输的可靠性。
结合第一方面，在一些可能实现方式中，激活信息或者去激活信息与第一周期性传输资源关联，第一周期性传输资源包括第一传输资源。
结合第一方面，在一些可能实现方式中，激活信息包括比特位图，去激活信息包括比特位图，比特位图中的第一比特与第一传输资源对应，
当第一比特取第一值时，第一比特用于指示第一设备在第一反馈资源上向第二设备发送反馈信息，
当第一比特取第二值时，第一比特用于指示第一设备在第二反馈资源上向第二设备发送反馈信息。
基于上述技术方案，激活信息和去激活信息的具体表现形式可以通过比特位图中的比特的取值进行指示。其中，比特位图中的比特与传输资源相对应，例如，第一比特与第一传输资源对应，第一比特取第一值，第一比特用于指示第一设备在第一反馈资源上传输反馈信息；当第一比特取第二值，第一比特用于指示第一设备在第二反馈资源上传输反馈信息。
结合第一方面，在一些可能实现方式中，激活信息和去激活信息包含在媒体介入控制(medium control access，MAC)控制元素信息中。
结合第一方面，在一些可能实现方式中，该方法还包括：
第一设备接收第二设备的第一请求信息，第一请求信息用于请求第一设备向第二设备发送激活信息或者去激活信息。
基于上述技术方案，例如，在第一设备和第二设备之间通过第一反馈资源传输反馈信息的情况下，当第二设备没有在第一传输资源/第一周期性传输资源上发送数据的需求时，第二设备可以向第一设备发送第一请求信息，该第一请求信息用于请求第一设备向第二设备发送去激活信息，从而可以降低第一设备的处理复杂度。
第二方面，提供了一种接收反馈信息的方法，该方法包括：
第二设备接收第一设备的第一信息，第一信息包括第一传输资源的信息和第一反馈资源的信息，第一传输资源与第一反馈资源相关联，第一反馈资源集合包括第一反馈资源，第一资源池的配置信息包括第一反馈资源集合的配置信息，第一资源池是为第一设备和第二设备配置的资源池，第一传输资源用于第二设备向第一设备发送第一数据；
第二设备在第一反馈资源上接收第一设备的反馈信息，反馈信息用于指示第一设备是否成功接收到第一数据。
根据本申请提供的接收反馈信息的方法，一方面，第二设备接收第一设备配置的与第一传输资源对应的反馈资源，而非按照现有技术中默认的传输资源和反馈资源间的映射关系确定反馈资源，提高了反馈资源的灵活性。另一方面，该第一反馈资源仍属于第一资源池配置的反馈资源集合，从而保证了现有的侧行链路的帧结构不变。
结合第二方面，在一些可能实现的方法中，第一信息包括第一周期性传输资源的信息和第一周期性反馈资源的信息，第一周期性传输资源包括第一传输资源，第一周期性反馈资源包括第一反馈资源。
在一种可能实现的方式中，第一周期性传输资源中包括的至少一个传输资源与第一周期性反馈资源中包括的至少一个反馈资源是一一关联的。
基于上述技术方案，本申请能够对周期性业务的传输资源进行灵活地指示其对应的反馈资源，进 一步地提高网络的整体性能。
结合第二方面，在一些可能实现的方法中，第一反馈资源的信息包括第三传输资源的信息，第一反馈资源为根据第一映射关系与第三传输资源对应的反馈资源，第一映射关系为第一资源池中的传输资源与反馈资源的映射关系。
基于上述技术方案，第一反馈资源的信息包括第三传输资源的信息，通过第三传输资源和第一映射关系确定发送反馈信息的第一反馈资源。其中，从第一反馈资源集合中通过第一映射关系确定第三传输资源对应的反馈资源为第一反馈资源。
结合第二方面，在一些可能实现的方法中，第一周期性反馈资源的信息包括第三周期性传输资源的信息，第三周期性传输资源包括第三传输资源，第一周期性反馈资源为第一周期性反馈资源集合中根据第一映射关系与第三周期性传输资源对应的周期性反馈资源，第一周期性反馈资源集合为第一资源池配置的。
基于上述技术方案，能够对周期性业务的传输资源进行灵活的指示其对应的反馈资源，进一步地提高网络的整体性能。
结合第二方面，在一些可能实现的方法中，第二设备在第一传输资源上向第一设备发送第一指示信息，第一指示信息用于指示第一数据是否为无效数据。
基于上述方案，当第二设备在第一传输资源上无数据传输需求时，为了避免第一设备认为自身未接收到第一传输资源上的数据，在第一反馈资源上发送NACK信息，从而导致与第一反馈资源关联的其他设备重发数据，浪费资源的问题。当第二设备在第一传输资源上无数据传输时，该第二设备在第一传输资源上向第一设备可以发送第一指示信息，该第一指示信息用于指示第二设备在第一传输资源上的第一数据为无效数据或者空包指示，使得第一设备根据第一反馈资源关联的多个传输资源上的数据接收结果确定反馈信息时，可以排除第一传输资源上的第一数据的接收结果，仅根据其他传输资源上是否接收到并成功解码数据来确定发送ACK信息或者NACK信息，从而提高第一设备在确定第一反馈资源上的反馈信息的准确性，同时避免了资源浪费的问题。
结合第二方面，在一些可能实现的方法中，第二设备接收第一设备的激活信息或者去激活信息，激活信息或者去激活信息与第一传输资源相关联，激活信息用于指示第二设备在第一反馈资源上接收来自第一设备的反馈信息，去激活信息用于指示第二设备在第二反馈资源上接收第一设备的反馈信息，第二反馈资源是根据第一资源池中的传输资源与反馈资源的映射关系确定的与第一传输资源对应的反馈资源。
应理解，第二设备接收第一设备的激活信息或者去激活信息，该激活信息用于指示第一设备与第二设备之间通过第一设备配置的第一反馈资源对第一数据进行反馈，该去激活信息用于指示第一设备与第二设备之间通过资源池配置的与第一传输资源对应的第二反馈资源上对第一数据进行反馈。
还应理解，该激活信息或者去激活信息包括一个或者多个传输资源的指示信息。该激活信息或者去激活信息能够进一步地对不同的传输资源进行激活或者去激活指示。
一种可能实现的方式，当第一设备确定该第一传输资源被其他设备占用时，该第二设备接收来自第一设备的去激活信息。或者，当第二设备在第一传输资源上不进行数据传输，或者进行了资源重选时，该第二设备接收第一设备的去激活信息。
基于上述技术方案，通过激活信息和去激活信息，能够灵活地根据干扰情况和负载情况调整设备间确定反馈资源的方式，提升反馈信息传输的可靠性。
结合第二方面，在一些可能实现的方法中，激活信息或者去激活信息与第一周期性传输资源关联，第一周期性传输资源包括第一传输资源。
结合第二方面，在一些可能实现的方法中，激活信息包括比特位图，去激活信息包括比特位图，比特位图中的第一比特与第一传输资源对应，
当第一比特取第一值时，第一比特用于指示第二设备在第一反馈资源上接收反馈信息，
当第一比特取第二值时，第一比特用于指示第二设备在第二反馈资源上接收反馈信息。
基于上述技术方案，激活信息和去激活信息的具体表现形式可以通过比特位图中的比特的取值进行指示。其中，比特位图中的比特与传输资源相对应，例如，第一比特与第一传输资源对应，第一比特取第一值，第一比特用于指示第二设备在第一反馈资源上接收第一设备的反馈信息；当第一比特取第二值，第一比特用于指示第二设备在第二反馈资源上接收第一设备的反馈信息。
结合第二方面，在一些可能实现的方法中，激活信息和去激活信息包含在媒体接入控制MAC控制元素信息中。
结合第二方面，在一些可能实现的方法中，第二设备向第一设备发送第一请求信息，第一请求信息用于请求第一设备向第二设备发送激活信息或者去激活信息。
基于上述技术方案，例如，在第一设备和第二设备之间通过第一反馈资源传输反馈信息的情况下，当第二设备没有在第一传输资源/第一周期性传输资源上发送数据的需求时，第二设备可以向第一设备发送该第一请求信息，该第一请求信息用于请求第一设备向第二设备发送去激活信息，从而能够降低第一设备处理的复杂度。
第三方面，提供一种发送反馈信息的方法，包括：第一设备向第二设备发送第一信息，第一信息包括第一传输资源的信息，第一传输资源用于第一设备接收第二设备的第一数据，第一传输资源与第一反馈资源相关联，第一反馈资源集合包括第一反馈资源，第一资源池的配置信息包括第一反馈资源集合的配置信息，第一资源池是为第一设备和第二设备配置的，第一反馈资源用于第一设备发送第一反馈信息，第一反馈信息为NACK信息；当第一设备在第一传输资源上未成功接收到第一数据时，第一设备向第二设备发送第一反馈信息。
在一种可能实现的方式中，当第一设备在第一传输资源上成功解码第一数据时，第一设备跳过向第二设备发送反馈信息的操作，反馈信息用于指示第一设备是否成功接收到第一数据。
应理解，当第一设备在第一传输资源上成功接收到第二设备的第一数据时，则该第一设备跳过向第二设备发送反馈信息的操作。即第一设备没有向第二设备发送反馈信息的操作。即在本申请中，第一设备作为数据的接收方，可以对数据的发送方即第二设备配置NACK-only的反馈模式，具体地，只有当第一设备未接收到或者未成功解码第一数据后才向第二设备发送NACK信息，而当第一设备成功接收并解码第一数据后，可以不向第二设备发送反馈信息，从而降低了因发送多个反馈信息平分功率导致的反馈信息可靠性降低的问题。
结合第三方面，在一些可能实现的方法中，第一信息包括第一周期性传输资源的信息，第一周期性传输资源包括第一传输资源。
基于上述技术方案，该第一信息包括第一周期性传输资源的信息，第一周期性传输资源包括第一传输资源，即能够对周期性业务进行NACK-only的反馈模式的指示，提高网络的整体性能。
结合第三方面，在一些可能实现的方法中，第一设备在第一传输资源上接收第二设备的第一指示信息，第一指示信息用于指示第一数据是否为无效数据，第一指示信息与第一数据相关联。
结合第三方面，在一些可能实现的方法中，当第一指示信息用于指示第一数据为无效数据时，第一设备跳过向第二设备发送反馈信息的操作。
基于上述技术方案，第二设备在第一传输资源上无数据需要发送时，该第二设备在第一传输资源上向第一设备发送第一指示信息，该第一指示信息用于指示该第一数据是否为无效，当第一数据为无效数据时，第一设备也可以不向第二设备发送反馈信息，从而降低第一设备发送反馈信息的数量。
结合第三方面，在一些可能实现的方法中，第一设备向第二设备发送激活信息或者去激活信息，
其中，激活信息用于指示：第一反馈资源用于第一设备发送第一反馈信息，在第一设备在第一传输资源上未接收到或者未成功解码所述第一数据的情况下，第一设备在第一反馈资源上向第二设备发送第一反馈信息；
去激活信息用于指示：第一反馈资源用于第一设备发送第二反馈信息，该第二反馈信息包括NACK信息或者ACK信息，第一设备根据是否成功解码第一数据，确定向第二设备发送第二反馈信息。
在一种可能实现的方式中，激活信息还用于指示：在第一设备在第一传输资源上成功解码第一数据的情况下，第一设备跳过向第二设备发送反馈信息的操作。
应理解，激活信息用于指示第一设备使用NACK-only的反馈模式对第一数据进行反馈，即第一设备接收并成功解码第一数据时，该第一设备跳过向第二设备发送反馈信息的操作，第一设备未接收或者未成功解码第一数据时，该第一设备向第二设备发送NACK信息；去激活信息用于去激活NACK-only的反馈模式，即指示第一设备直接根据是否成功解码第一数据确定第二反馈信息，并在第一反馈资源上向第二设备发送该第二反馈信息。
基于上述技术方案，激活信息和去激活信息，用于第一设备向第二设备指示第一设备对第二设备是否采用NACK-only的模式进行反馈。
结合第三方面，在一些可能实现的方法中，激活信息或者去激活信息与第一周期性传输资源关联，第一周期性传输资源包括第一传输资源。
基于上述技术方案，能够对周期性业务的传输资源进行灵活的指示第一设备对第二设备是否采用NACK-only的模式进行反馈。
结合第三方面，在一些可能实现的方法中，激活信息包括比特位图，去激活信息包括比特位图，比特位图中的第一比特与第一传输资源对应，
当第一比特为第一值时，第一比特用于指示：第一反馈资源用于第一设备发送第一反馈信息，在第一设备在第一传输资源上未接收到或者未成功解码第一数据的情况下，第一设备在第一反馈资源上向第二设备发送第一反馈信息，
当第一比特为第二值时，第一比特用于指示第一反馈资源用于第一设备发送第二反馈信息，第一设备根据是否成功解码所述第一数据，确定在第一反馈资源上向第二设备发送第二反馈信息。
在一种可能实现的方式中，当第一比特为第一值时，第一比特用于指示：在第一设备在第一传输资源上成功解码第一数据的情况下，第一设备跳过向第二设备发送反馈信息的操作。
基于上述技术方案，激活信息和去激活信息的具体表现形式可以通过比特位图中的比特的取值进行指示。其中，比特位图中的比特位与传输资源由对应关系，比特的具体取值用于指示在其对应的传输资源上，第一设备是否对第二设备采用NACK-only的反馈模式。
结合第三方面，在一些可能实现的方法中，激活信息和去激活信息包含在媒体接入控制MAC控制元素信息中。
结合第三方面，在一些可能实现的方法中，第一设备接收第二设备的第一请求信息，第一请求信息用于请求第一设备向第二设备发送去激活信息。
基于上述技术方案，例如，在第一设备和第二设备之间采用NACK-only的反馈模式的情况下，当第二设备没有在第一传输资源/第一周期传输资源上发送数据的需求时，第二设备可以向第一设备发送第一请求信息，该第一请求信息用于请求第一设备向第二设备发送去激活信息，从而可以降低第一设备的处理复杂度。
第四方面，一种接收反馈信息的方法，其特征在于，包括：
第二设备接收第一设备的第一信息，第一信息包括第一传输资源的信息，第一传输资源用于第二设备向第一设备发送第一数据，第一传输资源与第一反馈资源相关联，第一反馈资源集合包括第一反馈资源，第一资源池的配置信息包括第一反馈资源集合的配置信息，第一资源池是为第一设备和第二设备配置的资源池，第一反馈资源用于第一设备发送第一反馈信息，第一反馈信息为NACK信息；
当第一数据在第一传输资源上被第一设备未接收或者未成功解码时，第二设备接收第一设备的第一反馈信息。
在一种可能实现的方式中，当第一数据在第一传输资源上被第一设备解码成功，第一设备跳过向第二设备发送反馈信息的操作，第二设备接收不到来自第一设备关于第一数据的反馈信息，即第二设备无需执行接收关于第一数据的反馈信息的操作。
应理解，当第一数据在第一传输资源上被第一设备成功接收时，第一设备跳过向第二设备发送反馈信息的操作，即第二设备接收不到第一设备的第一反馈信息。即，在本申请中第一设备作为第一数据的接收方，可以对第一数据的发送方即第二设备配置NACK-only的反馈模式。具体地，只有当第一设备未接收到或者未成功解码第一数据之后，该第二设备才会接收来自第一设备的NACK信息；而第一设备成功接收并解码该第一数据之后，第一设备不向第二设备发送第一反馈信息，即第二设备接收不到来自第一设备的第一反馈信息，从而降低了因发送多个反馈信息平分功率导致的反馈信息可靠性降低的问题。
第四方面，在一些可能实现的方式中，第一信息包括第一周期性传输资源的信息，第一周期性传输资源包括第一传输资源。
基于上述技术方案，第一信息包括第一周期性传输资源的信息，第一周期性传输资源包括第一传输资源，即能够对周期性业务进行NACK-only的反馈模式的指示，提高网络的整体性能。
第四方面，在一些可能实现的方式中，第二设备在第一传输资源上向第一设备发送第一指示信息，第一指示信息用于指示第一数据是否为无效数据，第一指示信息与第一数据相关联。
第四方面，在一些可能实现的方式中，第二设备接收第一设备的激活信息或者去激活信息，
其中，激活信息用于指示第二设备在第一传输资源上向第一设备发送第一数据之后，第二设备确定在第一反馈资源上接收第一设备的第一反馈信息，或者该第一设备跳过发送反馈信息的操作，则第二设备接收不到关于第一数据的反馈信息；去激活信息用于指示第二设备在第一传输资源上向第一设备发送第一数据之后，第二设备确定在第一反馈资源上接收第一设备的第二反馈信息，该第二反馈信息包括NACK信息或ACK信息。
应理解，激活信息用于指示第一设备使用NACK-only的反馈模式对第一数据进行反馈，即第一设备接收并成功解码第一数据时，该第一设备跳过向第二设备发送反馈信息的操作，第一设备未成功接收第一数据时，该第一设备向第二设备发送第一反馈信息(NACK信息)；去激活信息用于指示去激活NACK-only的反馈模式，即第一设备直接根据是否成功解码第一数据确定第二反馈信息，并在第一反馈资源上向第二设备发送第二反馈信息(NACK信息或ACK信息)。
基于上述技术方案，激活信息和去激活信息，用于第一设备向第二设备指示，第一设备对第二设备是否采用NACK-only的模式进行反馈。
第四方面，在一些可能实现的方式中，激活信息或者去激活信息与第一周期性传输资源相关，第一周期性传输资源包括第一传输资源。
基于上述技术方案，能够对周期性业务的传输资源进行灵活的指示第一设备对第二设备是否采用NACK-only的模式进行反馈。
第四方面，在一些可能实现的方式中，激活信息包括比特位图，去激活信息包括比特位图，比特位图中的第一比特与第一传输资源对应，当第一比特为第一值时，第一比特用于指示第二设备在第一反馈资源上接收来自第一设备的第一反馈信息，或者第二设备在第一反馈资源上接收不到关于第一数据的反馈信息，当第一比特为第二值时，第一比特用于指示第二设备在第一反馈资源上接收第一设备的第二反馈信息。
基于上述技术方案，激活信息和去激活信息的具体表现形式可以通过比特位图中的比特的取值进行指示。其中，比特位图中的比特与传输资源相对应，例如，第一比特与第一传输资源对应，比特的具体取值用于指示在该比特对应的传输资源上，第一设备是否对第二设备采用NACK-only的反馈模式。
第四方面，在一些可能实现的方式中，激活信息和去激活信息包含在媒体接入控制MAC控制元素信息中。
第四方面，在一些可能实现的方式中，第二设备向第一设备发送第一请求信息，第一请求信息用于请求第一设备向第二设备发送去激活信息。
基于上述技术方案，例如，在第一设备和第二设备之间采用NACK-only的反馈模式的情况下，当第二设备没有在第一传输资源/第一周期传输资源上发送数据的需求时，第二设备可以向第一设备发送第一请求信息，该第一请求信息用于请求第一设备向第二设备发送去激活信息，从而可以降低第一设备的处理复杂度。
第五方面，提供了一种发送反馈信息的装置，该装置包括：收发单元，用于向第二设备发送第一信息，第一信息包括第一传输资源的信息和第一反馈资源的信息，第一传输资源与第一反馈资源相关联，第一反馈资源集合包括第一反馈资源，第一资源池的配置信息包括第一反馈资源集合的配置信息，第一资源池是为第一设备和第二设备配置的资源池，第一传输资源用于第一设备接收第二设备的第一数据；收发单元，用于在第一反馈资源上向第二设备发送反馈信息，反馈信息用于指示第一设备是否成功接收到第一数据。
第五方面，在一些可能实现的方式中，收发单元，还用于向第三设备发送第二信息，第二信息包括第二传输资源的信息和第一反馈资源的信息，第二传输资源用于第一设备接收来自第三设备的第二数据，第二传输资源与第一反馈资源相关联；
收发单元，用于在第一反馈资源上向第二设备发送反馈信息，反馈信息用于指示第一设备是否成功接收到第一数据，包括：
收发单元，用于在第一反馈资源上向第二设备和第三设备发送反馈信息，反馈信息用于指示第一设备是否成功接收到第一数据和第二数据。
第五方面，在一些可能实现的方式中，第一信息包括第一周期性传输资源的信息和第一周期性反馈资源的信息，第一周期性传输资源包括第一传输资源，第一周期性反馈资源包括第一反馈资源。
第五方面，在一些可能实现的方式中，第一周期性反馈资源的信息包括第三周期性传输资源的信 息，第三周期性传输资源包括第三传输资源，第一周期性反馈资源为第一周期性反馈资源集合中根据第一映射关系与第三周期性传输资源对应的周期性反馈资源，第一周期性反馈资源集合为第一资源池配置的。
第五方面，在一些可能实现的方式中，第一反馈资源的信息包括第三传输资源的信息，第一反馈资源为根据第一映射关系与第三传输资源对应的反馈资源，第一映射关系为第一资源池中的传输资源与反馈资源的映射关系。
第五方面，在一些可能实现的方式中，收发单元，用于在第三传输资源上接收第四设备的第三数据；
收发单元，用于在第一反馈资源上向第四设备发送反馈信息，第一反馈资源是根据第一映射关系和第三传输资源确定的，第一映射关系为第一资源池中的传输资源与反馈资源的映射关系，该反馈信息用于指示第一设备是否成功接收到第一数据，第二数据和第三数据。
第五方面，在一些可能实现的方式中，收发单元，用于在第一反馈资源上向第二设备和第三设备发送反馈信息，反馈信息用于指示收发单元是否成功接收到第一数据和第二数据,包括：
当满足以下情形至少之一时，收发单元，用于在第一反馈资源上向第二设备和第三设备发送NACK信息，
其中，情形包括：
当收发单元在第一传输资源上未接收到或者未成功解码第一数据；当收发单元在第二传输资源上未接收到或者未成功解码第二数据。
第五方面，在一些可能实现的方式中，第二信息包括第二周期性传输资源的信息和第一周期性反馈资源的信息，第二周期性传输资源包括第二传输资源，第一周期性反馈资源包括第一反馈资源。
第五方面，在一些可能实现的方式中，收发单元，用于在第一传输资源上接收第二设备的第一指示信息，第一指示信息用于指示第一数据是否为无效数据，第一指示信息与第一数据相关联。
第五方面，在一些可能实现的方式中，收发单元，用于向第二设备发送激活信息或者去激活信息，激活信息或者去激活信息与第一传输资源相关联，激活信息用于指示第一设备在第一反馈资源上向第二设备发送第一数据的反馈信息，去激活信息用于指示第一设备在第二反馈资源上向第二设备发送第一数据的反馈信息，第二反馈资源为第一反馈资源集合中根据第一映射关系与第一传输资源对应的反馈资源，第一映射关系为第一资源池中的传输资源与反馈资源的映射关系。
第五方面，在一些可能实现的方式中，激活信息或者去激活信息与第一周期性传输资源关联，第一周期性传输资源包括第一传输资源。
第五方面，在一些可能实现的方式中，激活信息包括比特位图，去激活信息包括比特位图，比特位图中的第一比特与第一传输资源对应，
当第一比特取第一值时，第一比特用于指示收发单元在第一反馈资源上向第二设备发送反馈信息，
当第一比特取第二值时，第一比特用于指示收发单元在第二反馈资源上向第二设备发送反馈信息。
第五方面，在一些可能实现的方式中，激活信息和去激活信息包含在媒体介入控制MAC控制元素信息中。
第五方面，在一些可能实现的方式中，收发单元，还用于接收第二设备的第一请求信息，第一请求信息用于请求第一设备向第二设备发送激活信息或者去激活信息。
第六方面，提供了一种接收反馈信息的装置，包括：
收发单元，用于接收第一设备的第一信息，第一信息包括第一传输资源的信息和第一反馈资源的信息，第一传输资源与第一反馈资源相关联，第一反馈资源集合包括第一反馈资源，第一资源池的配置信息包括第一反馈资源集合的配置信息，第一资源池是为第一设备和第二设备配置的资源池，第一传输资源用于第二设备向第一设备发送第一数据；
收发单元，还用于在第一反馈资源上接收第一设备的反馈信息，反馈信息用于指示第一设备是否成功接收到第一数据。
第六方面，在一些可能实现的方式中，第一信息包括第一周期性传输资源的信息和第一周期性反馈资源的信息，第一周期性传输资源包括第一传输资源，第一周期性反馈资源包括第一反馈资源。
第六方面，在一些可能实现的方式中，第一反馈资源的信息包括第三传输资源的信息，第一反馈资源为根据第一映射关系与第三传输资源对应的反馈资源，第一映射关系为第一资源池中的传输资源 与反馈资源的映射关系。
第六方面，在一些可能实现的方式中，第一周期性反馈资源的信息包括第三周期性传输资源的信息，第三周期性传输资源包括第三传输资源，第一周期性反馈资源为第一周期性反馈资源集合中根据第一映射关系与第三周期性传输资源对应的周期性反馈资源，第一周期性反馈资源集合为第一资源池配置的。
第六方面，在一些可能实现的方式中，收发单元，还用于在第一传输资源上向第一设备发送第一指示信息，第一指示信息用于指示第一数据是否为无效数据。
第六方面，在一些可能实现的方式中，收发单元，还用于接收第一设备的激活信息或者去激活信息，激活信息或者去激活信息与第一传输资源相关联，激活信息用于指示第二设备在第一反馈资源上接收来自第一设备的反馈信息，去激活信息用于指示第二设备在第二反馈资源上接收第一设备的反馈信息，第二反馈资源是根据第一资源池中的资源与反馈资源的映射关系确定的与第一传输资源对应的反馈资源。
第六方面，在一些可能实现的方式中，激活信息或者去激活信息与第一周期性传输资源关联，第一周期性传输资源包括第一传输资源。
第六方面，在一些可能实现的方式中，激活信息包括比特位图，去激活信息包括比特位图，比特位图中的第一比特与第一传输资源对应，
当第一比特取第一值时，第一比特用于指示收发单元在第一反馈资源上接收反馈信息，
当第一比特取第二值时，第一比特用于指示收发单元在第二反馈资源上接收反馈信息。
第六方面，在一些可能实现的方式中，激活信息和去激活信息包含在媒体接入控制MAC控制元素信息中。
第六方面，在一些可能实现的方式中，收发单元，还用于向第一设备发送第一请求信息，第一请求信息用于请求第一设备向第二设备发送激活信息或者去激活信息。
第七方面，提供一种发送反馈信息的装置，包括：
收发单元，用于向第二设备发送第一信息，第一信息包括第一传输资源的信息，第一传输资源用于第一设备接收第二设备的第一数据，第一传输资源与第一反馈资源相关联，第一反馈资源集合包括第一反馈资源，第一资源池的配置信息包括第一反馈资源集合的配置信息，第一资源池是为第一设备和第二设备配置的资源池，第一反馈资源用于第一设备发送第一反馈信息，第一反馈信息为NACK信息；
当收发单元在第一传输资源上未接收到或者未成功解码第一数据时，收发单元用于向第二设备发送第一反馈信息。
一种可能实现的方式，当收发单元在第一传输资源上成功接收到第一数据时，收发单元跳过向第二设备发送反馈信息的操作，反馈信息用于指示收发单元是否成功接收到第一数据。
第七方面，在一些可能实现的方式中，第一信息包括第一周期性传输资源的信息，第一周期性传输资源包括第一传输资源。
第七方面，在一些可能实现的方式中，收发单元在第一传输资源上接收第二设备的第一指示信息，第一指示信息用于指示第一数据是否为无效数据，第一指示信息与第一数据相关联。
第七方面，在一些可能实现的方式中，当第一指示信息用于指示第一数据为无效数据时，收发单元跳过向第二设备发送反馈信息的操作。
第七方面，在一些可能实现的方式中，收发单元，还用于向第二设备发送激活信息或者去激活信息，
其中，激活信息用于指示：第一反馈资源用于收发单元发送第一反馈信息，在收发单元在第一传输资源上未接收到或者未成功解码第一数据的情况下，收发单元在第一反馈资源上向所述第二设备发送所述第一反馈信息；
去激活信息用于指示：第一反馈资源用于收发单元发送第二反馈信息，第二反馈信息包括NACK信息或者ACK信息，处理单元根据是否成功解码第一数据，确定在第一反馈资源上向第二设备发送第二反馈信息。
在一种可能实现的方式中，在收发单元在第一传输资源上成功解码第一数据的情况下，激活信息用于指示收发单元跳过向第二设备发送反馈信息的操作。
第七方面，在一些可能实现的方式中，激活信息或者去激活信息与第一周期性传输资源关联，第一周期性传输资源包括第一传输资源。
第七方面，在一些可能实现的方式中，激活信息包括比特位图，去激活信息包括比特位图，比特位图中的第一比特与第一传输资源对应，
当第一比特为第一值时，第一比特用于指示第一反馈资源用于收发单元发送第一反馈信息，在收发单元在所述第一传输资源上未接收到或者未成功解码第一数据的情况下，收发单元在第一反馈资源上向第二设备发送第一反馈信息；
当第一比特为第二值时，第一比特用于指示第一反馈资源用于收发单元发送第二反馈信息，收发单元根据是否成功解码第一数据，确定在第一反馈资源上向第二设备发送第二反馈信息。
第七方面，在一些可能实现的方式中，激活信息和去激活信息包含在媒体接入控制MAC控制元素信息中。
第七方面，在一些可能实现的方式中，收发单元，还用于接收第二设备的第一请求信息，第一请求信息用于请求第一设备向第二设备发送去激活信息。
第八方面，提供一种接收反馈信息的装置，该装置包括：
收发单元，用于接收第一设备的第一信息，第一信息包括第一传输资源的信息，第一传输资源用于第二设备向第一设备发送第一数据，第一传输资源与第一反馈资源相关联，第一反馈资源集合包括第一反馈资源，第一资源池的配置信息包括第一反馈资源集合的配置信息，第一资源池是为第一设备和第二设备配置的资源池，第一反馈资源用于收发单元发送第一反馈信息，第一反馈信息为NACK信息；
当第一数据在第一传输资源上被处理单元未接收或者未成功解码时，收发单元，用于接收第一设备的第一反馈信息。
在一种可能实现的方式中，当第一数据在第一传输资源上被处理单元解码成功，第一设备跳过向收发单元发送反馈信息的操作，收发单元接收不到来自第一设备关于第一数据的反馈信息，即收发单元无需执行接收关于第一数据的反馈信息的操作。
第八方面，在一些可能实现的方式中，第一信息包括第一周期性传输资源的信息，第一周期性传输资源包括第一传输资源。
第八方面，在一些可能实现的方式中，收发单元，用于在第一传输资源上向第一设备发送第一指示信息，第一指示信息用于指示第一数据是否为无效数据，第一指示信息与第一数据相关联。
第八方面，在一些可能实现的方式中，收发单元，用于接收第一设备的激活信息或者去激活信息，激活信息用于指示收发单元在第一传输资源上向第一设备发送第一数据之后，处理单元确定在第一反馈资源上接收第一设备的第一反馈信息，或者该第一设备跳过发送反馈信息的操作，则收发单元接收不到关于第一数据的反馈信息；去激活信息用于指示收发单元在第一传输资源上向第一设备发送第一数据之后，收发单元确定在第一反馈资源上接收第一设备的第二反馈信息，该第二反馈信息包括NACK信息或ACK信息。
第八方面，在一些可能实现的方式中，激活信息或者去激活信息与第一周期性传输资源相关，第一周期性传输资源包括第一传输资源。
第八方面，在一些可能实现的方式中，激活信息包括比特位图，去激活信息包括比特位图，比特位图中的第一比特与第一传输资源对应，当第一比特为第一值时，第一比特用于指示收发单元在第一反馈资源上接收来自第一设备的第一反馈信息，或者收发单元在第一反馈资源上接收不到关于第一数据的反馈信息，当第一比特为第二值时，第一比特用于指示收发单元在第一反馈资源上接收第一设备的第二反馈信息。
第八方面，在一些可能实现的方式中，激活信息和去激活信息包含在媒体接入控制MAC控制元素信息中。
第八方面，在一些可能实现的方式中，收发单元，用于向第一设备发送第一请求信息，第一请求信息用于请求第一设备向第二设备发送去激活信息。
第九方面，提供一种发送和接收反馈信息的装置，该装置用于执行上述第一方面和/或第二方面提供的方法，或者该装置用于执行上述第三方面和/或第四方面提供的方法。具体地，该装置可以包括用于执行第一方面、第二方面、第三方面、第四方面的上述任意一种实现方式提供的方法的单元和/或模 块，如处理单元和/或收发单元(或者称为通信单元)。
在一种实现方式中，该装置为通信设备(如终端设备，又如网络设备)。当该装置为通信设备时，通信单元可以是收发器或者收发单元，或，输入/输出接口；处理单元可以是至少一个处理器。可选地，收发器可以为收发电路。可选地，输入/输出接口可以为输入/输出电路。
在另一种实现方式中，该装置为用于通信设备(如终端设备，又如网络设备)中的芯片、芯片系统或电路。当该装置为用于通信设备中的芯片、芯片系统或电路时，通信单元可以是该芯片、芯片系统或电路上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等；处理单元可以是至少一个处理器、处理电路或逻辑电路等。
第十方面，提供一种通信装置，该装置包括：存储器，用于存储程序；至少一个处理器，用于执行存储器存储的计算机程序或指令，以执行上述第一方面、第二方面、第三方面、第四方面中任意一种实现方式提供的方法。
在一种实现方式中，该装置为通信设备(如终端设备，又如网络设备)。
在另一种实现方式中，该装置为用于通信设备(如终端设备，又如网络设备)中的芯片、芯片系统或电路。
第十一方面，本申请提供一种处理器，用于执行上述各方面提供的方法。
对于处理器所涉及的发送和获取/接收等操作，如果没有特殊说明，或者，如果未与其在相关描述中的实际作用或者内在逻辑相抵触，则可以理解为处理器输出和输入等操作，也可以理解为由射频电路和天线所进行的发送和接收操作，本申请对此不做限定。
第十二方面，提供一种计算机可读存储介质，该计算机可读介质存储用于设备执行的程序代码，该程序代码包括用于执行上述第一方面、第二方面、第三方面、第四方面中上述任意一种实现方式提供的方法。
第十三方面，提供一种包含指令的计算机程序产品，当该计算机程序产品在计算机上运行时，使得计算机执行上述第一方面、第二方面、第三方面、第四方面中任意一种实现方式提供的方法。
第十四方面，提供一种芯片，芯片包括处理器与通信接口，处理器通过通信接口读取存储器上存储的指令，执行上述第一方面、第二方面、第三方面、第四方面中任意一种实现方式提供的方法。
可选地，作为一种实现方式，芯片还包括存储器，存储器中存储有计算机程序或指令，处理器用于执行存储器上存储的计算机程序或指令，当计算机程序或指令被执行时，处理器用于执行上述第一方面、第二方面、第三方面、第四方面中任意一种实现方式提供的方法。
附图说明
图1是本申请实施例使用的一种系统架构示意图。
图2是本申请实施例提供的一种时隙帧结构的示意图。
图3是本申请实施例提供的一种PSFCH资源位置的映射关系示意图。
图4是本申请实施例提供的一种PSFCH资源划分的示意图。
图5是本申请实施例提供的一种发送和接收反馈信息的方法的示意性流程图。
图6是本申请实施例提供的另一种发送和接收反馈信息的方法的示意性流程图。
图7是本申请实施例提供的另一种PSFCH资源位置的映射关系示意图。
图8是本申请实施例提供的又一种发送和接收反馈信息的方法的示意性流程图。
图9是本申请实施例提供的又一种PSFCH资源位置的映射关系示意图。
图10是是本申请实施例提供的一种发送和接收反馈信息的装置1000的示意图。
图11是本申请实施例提供另一种发送和接收反馈信息的装置1100的示意图。
图12是本申请实施例提供一种芯片系统1200的示意图。
具体实施方式
下面将结合附图，对本申请实施例中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(global system of mobile communication，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址 (wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、第三代合作伙伴计划(the 3rd generation partnership project，3GPP)相关蜂窝系统、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、无线保证(wifi)、第五代(5th generation，5G)系统或新无线(New Radio，NR)、第六代(6th generation，6G)系统等。
本申请实施例的技术方案还可以应用于LTE侧行链路系统、LTE演进侧行链路、5G侧行链路系统或者5G演进侧行链路系统、未来的通信系统(例如第六代移动通信系统)。本申请提供的技术方案可以应用于设备到设备(device to device，D2D)通信，车到万物(vehicle-to-everything，V2X)通信，机器到机器(machine to machine，M2M)通信，机器类型通信(machine type communication，MTC)，以及物联网(internet of things，IoT)，通信系统或者其他通信系统。
本申请实施例的技术方案也可以应用于短距离无线通信系统中，例如无线个人局域网(wireless personal area network，WPAN)，WPAN可以用于电话、计算机、附属设备等小范围内的数字辅助设备之间的通信。支持无线个人局域网的技术包括蓝牙(Bluetooth)、紫蜂(ZigBee)、超宽带(ultra wideband，UWB)、红外数据协会(infrared data association，IrDA)连接技术、家庭射频(home radio frequency，HomeRF)等。又或者侧行链路(sidelink)通信系统，WiFi通信系统等。本申请对此不做具体限定。
随着无线通信技术的发展，移动通信网络逐渐向5G NR系统演进。在5G NR系统中，也引入了侧行链路(Sidelink)技术，即终端设备之间可以利用无线资源直接进行通信。
如图1所示，Sidelink不同于终端设备和基站之间的上行链路(uplink)和下行链路(downlink)，Sidelink指的是终端设备和终端设备之间的链路，对应PC5接口实现终端设备之间的近距离服务直接通信的通信模式。
其中，与4G LTE系统中的Sidelink技术类似，上述5G NR系统的Sidelink技术可以应用于车联网场景，也可以应用于智慧工厂等场景中。NR系统的Sidelink的物理信道主要由物理侧行链路控制信道(physical sidelink control channel，PSCCH)、物理侧行链路共享信道(physical sidelink shared channel，PSSCH)、物理侧行链路广播信道(physical sidelink broadcast channel，PSBCH)和物理侧行链路反馈信道(physical sidelink feedback channel，PSFCH)组成。其中前三种物理信道在LTE系统的Sidelink中已经存在，PSFCH是NR系统的Sidelink技术为了支持混合自动重传请求(hybrid automatic repeat request，HARQ)传输新引入的物理信道。PSCCH主要完成Sidelink控制信息的传输，即用来传输第一阶Sidelink控制信息(sidelink control information 1，SCI1)，PSSCH信道主要传输第二阶Sidelink控制信息(sidelink control information 2，SCI2)和Sidelink数据信息。另外，还有两个同步信号：主Sidelink同步信号(primary sidelink synchronization signal，PSSS)和辅Sidelink同步信号(secondary sidelink synchronization signal，SSSS)。
应理解，当一个时隙中配置有PSFCH资源时，PSFCH会占据该时隙中的倒数第二个正交频分复用(Orthogonal frequency division multiplexing，OFDM)符号(以下简称符号)也可以理解为能用于Sidelink传输的倒数第二个符号，并且在PSFCH所在的符号之前需要增加一个额外的间隔(GAP)符号和自动增益控制(Automatic gain control，AGC)符号，如图2是本申请实施例提供的一种时隙帧结构示意图。
如图2示出了一个时隙中包括了14个符号，其中，PSFCH占据该时隙的第13个符号(即符号12)，在PSFCH占据的符号之前，还包括GAP符号和AGC符号。其中，在本申请实施例中，当一个时隙中配置有PSFCH资源，我们称该时隙为PSFCH时隙。
还应理解，资源池中的配置信息会指示该PSFCH符号上具体哪些物理资源块(physical resource block，PRB)可用于PSFCH传输，同时，PSFCH与PSSCH之间有明确的映射关系，PSSCH的接收设备会根据PSSCH与PSFCH之间的映射关系确定一个PRB用于PSFCH的发送。
作为一种示例，该映射关系可以根据PSFCH出现的周期和PSSCH与其映射的PSFCH的之间的最小时隙间隔确定，最小时间间隔可以由sl-MinTimeGapPSFCH配置。其中，该最小时间间隔主要是考虑到接收设备进行PSSCH的解码以及生成PSFCH上的反馈信息需要一定的处理时间，所以要求PSSCH和PSFCH之间的映射也需要保持一定的时间间隔。即一个终端设备在接收到PSSCH之后，在包含PSFCH资源且距离该PSSCH的最后一个时隙至少上述间隔的第一个时隙发送PSFCH。
举例来说，图3是本申请实施例提供的一种PSFCH资源位置的映射关系的示意图。如图3所示，当在时隙0，时隙4，时隙8，时隙12等时隙上会有PSFCH资源(时隙0和12未在图2中示出)，即时隙0，时隙4，时隙8，时隙12等时隙为PSFCH时隙。另外，sl-MinTimeGapPSFCH配置为2个时隙，即时隙8中的PSFCH与其对应的PSSCH需要满足间隔至少两个时隙，因此时隙8中的PSFCH与时隙3～时隙6中的PSSCH对应，即如果一个Sidelink设备在时隙3～时隙6中收到了一个PSSCH，则该Sidelink设备在时隙8中对应的PSFCH资源上发送ACK/NACK信息。类似地，时隙12中的PSFCH与时隙7～时隙10中的PSSCH对应，依次类推，此处不再赘述。
应理解，在一个PSFCH时隙中，承载PSFCH的符号上，资源池配置信息中会配置一个或多个可用于PSFCH的PRB。例如通过参数sl-PSFCH-RB-Set配置个PRB用于传输PSFCH，这些PRB假设分别拥有索引进一步地，PRB和子信道以及时隙有映射关系。对于一个资源池上的Nsubch个子信道，以及与一个PSFCH时隙关联的若干(小于或等于)个时隙(时隙的关联关系如上文所述)，终端设备可以把索引为 的PRB分配给这些关联时隙中的时隙i，以及子信道j。其中表示一个时隙以及子信道构成的传输资源对应的可用于传输PSFCH的PRB个数, 即时隙与子信道资源到用于传输PSFCH的PRB的映射顺序可以按照先时域后频域。如图3中所示，假设该资源池上配置了2个子信道，时隙8中有8个可用于传输PSFCH的PRB(该8个可用于传输PSFCH的PRB可能是非连续的)。
作为一种示例，根据上文描述以及图3所示，可知时隙8与时隙3～时隙6中子信道0和子信道1关联，子信道以及时隙和PRB的映射按照先时隙映射再频域映射的顺序映射，即子信道0，时隙0对应PRB0、子信道0，时隙1对应PRB1、子信道0，时隙2对应PRB2、子信道0，时隙3对应PRB3；子信道1，时隙0对应PRB4、子信道1，时隙1对应PRB5、子信道1，时隙2对应PRB6、子信道1，时隙3对应PRB7。
作为另一种示例，当PSFCH时隙中PSFCH所在符号有16个PRB可用于传输PSFCH时，则子信道0，时隙0对应PRB0&1、子信道0时隙1对应PRB2&3、子信道0时隙2对应PRB3&4……子信道1，时隙3对应PRB14&15。
应理解，上述示例只是一种资源池中传输资源(时隙X子信道)与反馈资源之间的一种映射关系，但本申请也可以应用于根据其他方式确定的资源池中传输资源和反馈资源之间的映射关系，对此本申请不做限定。还应理解，当一个设备接收到一个PSSCH之后(例如先检测到PSCCH中的SCI1，然后根据SCI的指示接收PSSCH)，可以根据该PSSCH对应的时隙以及一个或多个子信道对应的PRB来确定用于回复ACK/NACK的PSFCH资源。具体地，一个PSSCH对应的PRB可以是根据PSSCH所在时隙以及起始子信道映射的一组PRB，或者一个PSSCH对应的PRB可以是根据PSSCH所在时隙以及占据的多个子信道映射的多组PRB，具体采用哪种方法确定发送PSFCH资源的PRB可以由高层进行配置，对此本申请不做具体限定。
还应理解，反馈资源还可以包括码域的维度，例如通常反馈信息通常在一个PSFCH PRB中通过序列的形式发送，因此反馈资源还可以包括序列的不同循环移位对，例如进一步根据收发设备之间的ID来确定PSSCH对应的PRB和循环移位对。
需要说明的是，为了便于理解在本申请实施例中的技术方案，在本申请实施例中主要以可程式化逻辑控制器(Programmable logic controller，PLC)作为第一设备，传感器或者传统装置(Sensor or Actuator，S/A)作为第二设备作为示例进行介绍，其中，该第一设备和第二设备还可以是其他具体的装置或者设备，对此本申请不做具体限定。
在未来的工业制造场景中，可以考虑使用Sidelink网络来实现PLC与S/A之间的通信。按照上述映射关系确定反馈资源的位置由如下问题：反馈资源不够灵活，影响网络传输效率。
同时，在工业制造场景中的某些用例中，PLC需要和大量的S/A通信。例如PLC收集大量的S/A的状态信息或者数据，然后根据这些状态或者数据再生成相应的指令来控制S/A。当PLC收到这些S/A的数据之后，一般需要进行HARQ反馈。
根据上述描述，不同的S/A会在不同的PSSCH上发送数据，因此PLC需要针对多个PSSCH分别反馈PSFCH。
应理解，当第二设备的数量过多时，可能会出现如下问题：
当第一设备需要在多个PSFCH上对多个PSSCH进行反馈时，第一设备需要将其最大发送功率平分给这多个PSFCH，从而导致每个PSFCH分到的功率较低，导致反馈信息的可靠性较低。
基于上述分析，在第二设备较多的情况下，可能存在部分数据无法进行反馈以及反馈信息的可靠性较低的问题，本申请实施例提供了一种反馈信息发送的方法，从而能够降低第一设备在一个PSFCH符号上需要发送的PSFCH数量。
图4是本申请实施例提供的一种PSFCH资源划分的示意图。如图4所示，主要通过在SL资源池上通过配置更多的PSFCH资源，达到能够反馈较多数量的PESCH。
作为一种示例，如图4中的(1)所示，灰色部分为PSFCH资源占用的符号，即通过降低PSFCH资源的周期，使得第一设备将需要发送的PSFCH分流到多个不同的时隙上，从而降低第一设备在每个时隙或符号上需要发送的PSFCH数量。
作为另一种示例，如图4中的(2)所示，在一个PSFCH时隙中增加额外的PSFCH符号，从而可以使得第一设备在一个PSFCH符号上需要反馈的PSFCH数量降低，提高反馈信息的准确度。
应理解，根据上述图4中的示例，由于PSFCH是由系统配置的，即一个资源池上对于所有的设备均配置了相同的PSFCH资源集合，因此一旦资源池配置了额外的PSFCH资源后，其他设备会在额外配置的PSFCH资源上无法进行正常的数据传输。即图4所示的方法中，可能会导致设备减少可用的数据传输资源。
基于上述图4所示的方法所存在的技术问题，本申请实施例提供了另一种发送和接收反馈信息的方法，能够保证在不引入额外的PSFCH资源开销的情况下，降低第一设备在一个PSFCH符号上需要发送的PSFCH数量。
图5是本申请实施例提供的一种发送和接收反馈信息的方法的示意性流程图。如图5所示，该方法包括：
501，第一设备向第二设备发送第一信息。
相应地，该第二设备接收来自第一设备的第一信息。
其中，该第一信息中包括第一传输资源的信息和第一反馈资源的信息。该第一传输资源与第一反馈资源相关联，该第一传输资源用于第一设备接收第二设备的第一数据。
应理解，第一设备和第二设备会被配置资源池(例如，第一资源池)，该第一资源池上会配置第一反馈资源集合，例如上文描述中资源池上配置的周期性反馈资源，该第一反馈资源集合包括该第一反馈资源。具体的，该第一反馈资源在时域上可以包括一个时间单元中的一个时间子单元，在频域上可以包括一个频域单元中的频域子单元，在码域上可以包括一个循环移位对(Cyclic shift pair)。其中，时间单元例如可以为一个时隙(例如PSFCH时隙)，时间子单元例如可以为一个OFDM符号(例如PSFCH符号)。频域单元可以是一个子信道，子信道通常是Sidelink中数据传输在频域上占据的最小单元，频域子单元可以为一个PRB，一个子信道可以包括一个或多个PRB。
还应理解，第一信息中包括第一传输资源的信息和第一反馈资源的信息，其中，第二设备接收到来自第一设备的第一信息之后，可以在第一信息中指示的第一传输资源上进行传输数据，例如第一传输资源在时域上可以包括一个时隙或多个时隙，在频域上可以包括一个或多个子信道，下文中，主要以第一传输资源上在时域上包括一个时隙，在频域上包括一个或多个连续的子信道为例进行描述。
其中，该第一传输资源与第一反馈资源相关联，即第一设备可以通过第一信息配置第一传输资源关联的反馈资源，如此，第二设备在第一传输资源上向第一设备发送第一数据之后，可以在第一设备配置的第一反馈资源上接收第一设备的反馈信息，而非上文中根据资源池映射关系确定的反馈资源上接收第一设备的反馈信息，提升了反馈资源的灵活性。
在一种可能实现的方式中，第一信息包括第一周期性传输资源的信息和第一周期性反馈资源的信息。其中，第一周期性传输资源包括该第一传输资源，第一周期性反馈资源包括第一反馈资源。
应理解，第一信息中包括第一周期性传输资源的信息和第一周期性反馈资源的信息，第一周期性传输资源包括至少一个传输资源，第一周期性反馈资源包括至少一个反馈资源，其中，至少一个传输资源与至少一个反馈资源一一关联。
在一种可能实现的方式中，第一周期性传输资源的信息包括以下至少一项：时间单元的偏移，时间单元周期，起始频域单元位置，频域单元数量。以时间单元为时隙，频域单元为子信道为例，例如时间单元的偏移为1个时隙，时间单元周期为10个时隙，起始频域单元位置为子信道1，频域单元数 量为3，则第一周期性传输资源为：时隙1上的子信道1～3，时隙11上的子信道11～13，时隙21上的子信道11～13……
还应理解，当第一设备可以为第二设备分配资源时，该第一设备可以自行确定第一传输资源，并将包括第一传输资源的第一信息发送给第二设备。
在另一种可能实现的方式中，该第一反馈资源的信息包括第三传输资源的信息，该第一反馈资源为根据第一映射关系与第三传输资源对应的反馈资源，该第一映射关系为第一资源池中的传输资源与反馈资源的映射关系，资源池上传输资源与反馈资源的映射关系参照上文描述，此处不再赘述。
其中，第一周期性反馈资源可以包括第三周期性传输资源的信息，该第三周期性传输资源包括第三传输资源，该第一周期性反馈资源为第一周期性反馈资源集合中根据第一映射关系与第三周期性传输资源对应的周期性反馈资源。
502，第二设备在第一传输资源上向第一设备发送第一数据。
相应地，第一设备在第一传输资源上接收来自第二设备的第一数据。
具体地，当第二设备接收到来自第一设备的第一信息之后，该第二设备根据第一信息中包括的第一传输资源的信息，确定在第一传输资源上向第一设备发送第一数据。
在一种可能实现的方式中，该第二设备在第一传输资源上可以向第一设备发送第一指示信息，该第一指示信息用于指示该第一数据是否为无效数据，第一指示信息与第一数据相关联。
作为一种示例，第二设备在第一传输资源上向第一设备发送PSCCH，第一设备在第一传输资源上接收第二设备的PSCCH。其中PSCCH中包括SCI1，该PSCCH/SCI1能够用于调度PSSCH，即第一设备检测到该PSCCH之后，可以根据该PSCCH中的SCI1在第一传输资源上接收PSSCH，即PSCCH和PSSCH都可以位于第一传输资源上，可参考图2中的帧结构。具体的，SCI1中可以指示PSSCH包括的频域子信道个数，DMRS图样等信息。PSSCH中可以包括SCI2和第一数据，其中SCI2中可以包括Source ID和Destination ID，用于标识该PSSCH是第二设备发送给第一设备的。在本步骤中，SCI1和或SCI2中还可以包括第一指示信息，即指示PSSCH中的数据是否为无效数据，当第一设备在第一传输资源上接收到该第一指示信息，并且确定该PSSCH是发送给自己的之后，第一设备一方面可以确定第二设备向自己发送了PSSCH，因此不会因为未接收到PSSCH而向第二设备反馈NACK，另一方面第一设备可以确定PSSCH中的数据为无效数据，因此即使PSSCH中的数据部分解码错误，第一设备也无需向第二设备反馈NACK，从而避免了不必要的反馈和重传。
还应理解，步骤502为可选步骤。其中，当第二设备在第一传输资源上没有数据需要进行发送时，则该图5所示的方法可以不包括该步骤502，或者第二设备可以在第一传输资源上发送第一指示信息，该第一指示信息可以用于指示第一数据为无效数据。当第二数据在第一传输资源上有数据需要发送时，即在第一传输资源上发送第一数据，该图5所示的方法包括该步骤502。
503，第一设备在第一反馈资源上向第二设备发送反馈信息。
相应地，第二设备在第一反馈资源上接收来自第一设备的反馈信息。
具体地，第一设备向第二设备发送第一信息之后，该第二设备可能会根据该第一信息中包括的第一传输资源的信息，向第一设备发送第一数据。该第一设备根据是否在第一传输资源上成功接收到来自第二设备的第一数据(其中成功接收到包括成功检测到PSCCH后接收PSSCH并成功解调和解码PSSCH中的SCI2和数据)，确定反馈信息，并向第二设备发送该反馈信息。
其中，该反馈信息用于指示该第一设备是否成功接收到第二设备的第一数据。
作为一种示例，第二设备在第一传输资源上发送了数据#1，且第一设备在第一传输资源上接收到来自第二设备的数据#1，则表示该第一设备在第一传输资源上成功接收到来自第二设备的数据#1，则第一设备在第一反馈资源上向第二设备发送反馈信息，该反馈信息为ACK信息。
作为另一种示例，第二设备在第一传输资源上发送了数据#1，第一设备在第一传输资源上未接收到或者未能成功解码来自第二设备的数据#1，则表示该第一设备在第一传输资源上未接收到来自第二设备的数据#1，则第一设备在第一反馈资源上向第二设备发送反馈信息，该反馈信息为NACK信息。其中，本申请中的ACK信息还可以称为HARQ-ACK信息或者ACK，NACK信息还可以称为HARQ-NACK信息或者NACK，对此本申请不做具体限定。
可选的，当步骤502中第二设备发送了第一指示信息并且指示第一数据为无效数据时，第一设备也可以不发送反馈信息。
基于上述图5所示的方法，该方法还可以包括如下步骤：
第一设备向第二设备发送激活信息或者去激活信息。
相应地，第二设备接收来自第一设备的激活信息或者去激活信息。
其中，激活信息或者去激活信息与第一传输资源相关联，激活信息用于指示第一设备在第一反馈资源上向第二设备发送第一数据的反馈信息，去激活信息用于指示第一设备在第二反馈资源上向第二设备发送第一数据的反馈信息，第二反馈资源为第一反馈资源集合中根据第一映射关系与第一传输资源对应的反馈资源，第一映射关系为第一资源池中的传输资源与反馈资源的映射关系。
应理解，第一设备向第二设备发送激活信息或者去激活信息，该激活信息用于指示第一设备与第二设备之间通过第一设备配置的第一反馈资源对第一数据进行反馈，该去激活信息用于指示第一设备与第二设备之间通过资源池配置的与第一传输资源对应的第二反馈资源上对第一数据进行反馈。
还应理解，该激活信息或者去激活信息包括一个或者多个传输资源的指示信息。该激活信息或者去激活信息能够进一步地对不同的传输资源进行激活或者去激活指示，例如第一设备可以通过第一信息为第二设备配置多个第一传输资源，该激活信息或者去激活信息可以用于指示在哪些第一传输资源上根据资源池上的第一映射关系确定反馈资源，哪些第一传输资源上根据第一信息中配置的反馈资源确定反馈资源。
一种可能实现的方式，当第一设备确定该第一传输资源被其他设备占用时，该第一设备向第二设备发送去激活信息。或者，当第二设备在第一传输资源上没有数据需要传输时，或者，第二设备进行了资源重选，则该第一设备可以向第二设备发送去激活信息。
应理解，该步骤可以通过激活信息和去激活信息，灵活的根据干扰情况和负载情况调整设备间确定反馈资源的方式，提升反馈信息传输的可靠性。
在一种可能实现的方式中，激活信息或者去激活信息与第一周期性传输资源关联，第一周期性传输资源包括第一传输资源。
在另一种可能实现的方式中，激活信息包括比特位图，去激活信息包括比特位图，比特位图中的第一比特与第一传输资源对应，当第一比特取第一值时，第一比特用于指示第一设备在第一反馈资源上向第二设备发送反馈信息；当第一比特取第二值时，第一比特用于指示第一设备在第二反馈资源上向第二设备发送反馈信息。
应理解，激活信息和去激活信息的具体表现形式有很多，此处以比特位图的形式进行详细举例。比特位图中的比特与传输资源相对应，例如，第一比特与第一传输资源对应，第一比特取第一值，第一比特用于指示第一设备在第一反馈资源上传输反馈信息；当第一比特取第二值，第一比特用于指示第一设备在第二反馈资源上传输反馈信息。
其中，当第一值为“0”时，第二值为“1”；当第一值为“1”时，第二值为“0”。第一值与第二值不同。本申请对第一值与第二值的实际取值不做具体限定。
还应理解，该激活信息和去激活信息可以包含在媒体介入控制(MAC)控制元素信息中，由第一设备发送给第二设备。
在又一种可能实现的方式中，第一设备接收第二设备的第一请求信息，该第一请求信息用于请求第一设备向第二设备发送该激活信息或者去激活信息。
应理解，第二设备可以通过第一请求信息，请求第一设备在第一反馈资源或者第二反馈资源上向第二设备发送反馈信息。
还应理解，在第一设备和第二设备之间通过第一反馈资源传输反馈信息的情况下，当第二设备没有在第一传输资源/第一周期性传输资源上发送数据的需求，第二设备可以向第一设备发送第一请求信息，该第一请求信息用于请求第一设备向第二设备发送去激活信息，进一步地降低第一设备的处理复杂度。
基于上述图5所示的方法，第一设备还可能接收来自多个不同设备(例如两个或以上数量的设备)在不同传输资源上的不同数据。这种情况下，在保证资源配置的灵活度的同时，可以进一步地降低第一设备发送反馈信息的数量，提高反馈可靠性。接下来将结合图6详细介绍本申请实施例提供的另一种发送和接收反馈信息的方法。
如图6所示，该方法包括：
601，第一设备向第二设备发送第一信息。
相应地，第二设备接收来自第一设备的第一信息。
具体地，该第一信息包括第一传输资源的信息和第一反馈资源的信息。该第一传输资源与第一反馈资源相关联，该第一传输资源用于第一设备接收第二设备的第一数据。
602，第一设备向第三设备发送第二信息。
相应地，该第三设备接收来自第一设备的第二信息。
应理解，该第二信息包括第二传输资源的信息和第一反馈资源的信息，该第二传输资源用于第一设备接收来自第三设备的第二数据，该第二传输资源与第一反馈资源相关联。
还应理解，第一传输资源与第二传输资源不同。
可选的，第二设备和第三设备可以是相同的设备或者不同的设备。
应理解，第一信息可以包括第一周期性传输资源的信息和第一周期性反馈资源的信息。其中，第一周期性传输资源包括该第一传输资源，第一周期性反馈资源包括第一反馈资源。第二信息可以包括第二周期性传输资源的信息和第一周期性反馈资源的信息。其中，第二周期性传输资源包括该第二传输资源，第一周期性反馈资源包括第一反馈资源。详细介绍可以参见上述图5所示的方法，此处不在赘述。
需要说明的是，本申请不限定步骤601和步骤602的先后顺序，即步骤601与步骤602可以同时进行，或者步骤602在步骤601之前或者之后，对此本申请不做具体限定。
603，第二设备在第一传输资源上向第一设备发送第一数据。
相应地，第一设备在第一传输资源上接收来自第二设备的第一数据。
具体地，当第二设备接收到来自第一设备的第一信息之后，该第二设备根据第一信息中包括的第一传输资源的信息，确定在第一传输资源上向第一设备发送第一数据。
604，第三设备在第二传输资源上向第一设备发送第二数据。
相应地，第一设备在第二传输资源上接收来自第三设备的第二数据。
具体地，当第三设备接收到来自第一设备的第二信息之后，该第三设备根据第二信息中包括的第二传输资源的信息，确定在第二传输资源上向第一设备发送第二数据。
应理解，上述步骤601至步骤604与上述图5中的步骤501和步骤502类似，具体介绍可以参数上述图5中的描述，此处不再赘述。类似地，步骤603和步骤604均为可选步骤，其中，当第二设备和第三设备在第一传输资源上和第二传输资源上没有数据需要进行发送时，则图6所述的方法可以不包括步骤603和步骤604。
需要说明的是，本申请不限定步骤603和步骤604的先后顺序，即步骤603与步骤604可以同时进行，或者步骤604在步骤603之前或者之后，对此本申请不做具体限定。
通过上述步骤，第一设备可以为第二设备和第三设备配置相同的反馈资源，从而减少第一设备需要发送的反馈信息的数量，提升每个反馈信息的发送功率，从而提升反馈信息的可靠性。
可选的，第一设备还可以为更多设备配置相同的反馈资源，此处不再一一举例。
605，第四设备在第三传输资源上向第一设备发送第三数据。
相应地，第一设备在第三传输资源上接收第四设备的第三数据。
其中，第三传输资源是与第一反馈资源存在第一映射关系的传输资源。
应理解，第一映射关系为第一资源池中的传输资源与反馈资源的映射关系，该第一映射关系为系统配置的传输资源与反馈资源之间的映射关系。
应理解，当第一设备在第三传输资源上接收到来自第四设备的第三数据之后，该第一设备根据第一映射关系和第三传输资源，确定在第一反馈资源上向第四设备发送反馈信息。该第一映射关系为第一资源池中的传输资源与反馈资源的映射关系。
在一些可能实现的方式中，第一周期性反馈资源的信息包括第三周期性传输资源的信息，第三周期性传输资源包括第三传输资源，第一周期性反馈资源为第一周期性反馈资源集合中根据第一映射关系与第三周期性传输资源对应的周期性反馈资源，第一周期性反馈资源集合为第一资源池配置的。可选的，第一设备也可以为第三设备发送相应的指示信息指示第三传输资源和第一反馈资源，具体步骤不再赘述。
由于第一反馈资源为第一资源池上根据第一映射关系确定的与第三传输资源对应的反馈资源，且第三传输资源为第三设备向第一设备发送第三数据使用的传输资源，因此如果其他设备(例如第五设 备和第六设备)仍按照第一映射关系确定传输资源对应的反馈资源，考虑到通常其他设备会使用和第三传输资源正交的传输资源(例如通过网络设备的调度，或者通过设备间的感知和资源选择)，其他设备确定的反馈资源也不会和第一反馈资源冲突，相应的，第一设备在第一反馈资源上发送反馈信息也不会占用其他传输资源对应的反馈资源，即不会和其他设备的反馈资源发生资源冲突。
应理解，第四设备可以和第二设备为相同的设备，则第一传输资源和第三传输资源为相同的传输资源，或者第四设备可以和第三设备为相同的设备，则第二传输资源和第三传输资源为相同的传输资源。
606，第一设备在第一反馈资源上发送反馈信息。
具体地，第一设备根据前述步骤中向其他设备发送的指示信息确定多个传输资源，在该多个传输资源上接收来自多个设备(两个或者两个以上设备)的数据，第一设备根据承载数据的传输资源确定发送反馈信息的反馈资源。其中，如上述步骤603和步骤605中的所示的第一设备可以接收来自第二设备和第四设备在第一传输资源和第三传输资源上发送的第一数据和第三数据，第一设备根据第一传输资源和第三传输资源，确定在第一反馈资源上向第二设备和第四设备发送反馈信息。第二设备和第四设备在第一反馈资源上接收来自第一设备的反馈信息。
应理解，当第一设备还在第二传输资源上接收到来自第三设备的第二数据，则该第一设备在第一反馈资源上向第三设备发送该反馈信息。其中，第三设备可以用于指示一类第三设备，即第三设备还可以包括一个或者多个设备，统称为第三设备。第二资源也可以用于指示一类第二资源，即第二资源还可以包括一个或多个资源，统称为第二资源，该第三设备包括的一个或者多个设备均可以在第二传输资源包括的一个或者多个资源上向第一设备发送第二数据，在第一反馈资源上接收来自第一设备的反馈信息。
可以看出，第一设备确定第一传输资源、第二传输资源和第三传输资源对应的反馈资源均为第一反馈资源，即第一设备根据在第一传输资源、第二传输资源和第三传输资源上接收的第一数据、第二数据和第三数据的具体情况，确定反馈信息，并在第一反馈资源上向第二设备、第三设备和第四设备发送该反馈信息。
应理解，第一设备在第一反馈资源上向第二设备、第三设备和第四设备发送反馈信息，该反馈信息用于指示第一设备是否成功接收到第二设备的第一数据、第三设备的第二数据以及第四设备的第三数据。
作为一种示例，当第一设备在第一传输资源上成功接收并解码到第二设备的第一数据，且第一设备在第二传输资源上成功接收并解码第三设备的第二数据，且第一设备在第三传输资源上成功接收并解码第四设备的第三数据时，则第一设备确定的该反馈信息为ACK信息；当第一设备在第一传输资源上成功接收并解码第二设备的第一数据，第一设备在第三传输资源上成功接收并解码第四设备的第三数据，且第一设备在第二传输资源上未接收到第三设备的第二数据时，则第一设备确定的该反馈信息为NACK信息；当第一设备在第一传输资源上成功接收但未成功解码第二设备的第一数据，且第一设备在第二传输资源上成功接收并解码第三设备的第二数据和第一设备在第三传输资源上成功接收并解码第四设备的第三数据时，则第一设备确定的该反馈信息为NACK信息。
其中，当第一设备在第一反馈资源相关联的第一传输资源、第二传输资源和第三传输资源上接收的所有数据，存在至少一个数据未被接收或者成功接收且未成功解码时，该第一设备在第一反馈资源上向第二设备、第三设备和第四设备发送的反馈信息为NACK信息。当第一设备在第一反馈资源相关联的所有传输资源上均成功接收到对应的数据并成功解码时，该第一设备在第一反馈资源上发送的反馈信息为ACK信息。
还应理解，当第一设备确定反馈信息为NACK信息时，第一设备在第一反馈资源上将该反馈信息向第二设备、第三设备和第四设备发送，第二设备、第三设备和第四设备将根据该反馈信息，确定是否需要进行数据的重传。
可选的，第二设备、第三设备和第四设备还可以发送空包指示信息，若其中某个设备指示其在对应的传输资源上的数据为空包，则第一设备确定反馈信息时，不考虑该设备对应的数据。即，反馈信息为NACK信息或者ACK信息与第一设备是否接收或者成功解码该设备在其对应传输资源上发送的数据无关。
例如在上述步骤中，第二设备指示第一数据为空包，则第一设备可以仅根据第三设备发送的第二 数据以及第四设备发送的第三数据确定在第一反馈资源上发送ACK信息或者NACK信息；或者，第三设备指示第二数据为空包，则第一设备可以仅根据第二设备发送的第一数据以及第四设备发送的第三数据确定在第一反馈资源上发送ACK信息或者NACK信息。
根据上述图6所示的方法，第一反馈资源可以与多个传输资源相关联，第一设备能够在同一反馈资源上向多个传输不同数据的设备发送同一反馈信息，从而降低了第一设备发送反馈信息的数量，提高反馈的可靠性和资源利用率。
基于上述图5和图6所示的方法，下面将结合图7所示的一种PSFCH资源位置的映射关系示意图，以第一设备为PLC，第二设备为S/A例，示例性地介绍图5和图6所示的方法。
作为一种示例，假设有8个S/A需要分别在PSSCH 0～7上向PLC发送第一数据，则PLC向第一个S/A发送的信息#A包含的第一传输资源为PSSCH0对应的资源，第一反馈资源为最右边PRB 0对应的资源；PLC向第二个S/A发送的信息#B包含的第一传输资源为PSSCH 1对应的资源，第一反馈资源为最右边PRB0对应的资源；PLC向第三个S/A发送的信息#C包含的第一传输资源为PSSCH 2对应的资源，第一反馈资源为最右边PRB0对应的资源；PLC向第四个S/A发送的信息#D包含的第一传输资源为PSSCH 3对应的资源，第一反馈资源为最右边PRB0对应的资源。
相应地，PLC向第五个S/A发送的信息#E，该信息#E包含第一传输资源为PSSCH4对应的资源，第一反馈资源为最右边PRB 4对应的资源；PLC向第六个S/A发送的信息#F，该信息#F包含第一传输资源为PSSCH5对应的资源，第一反馈资源为最右边PRB 4对应的资源；PLC向第七个S/A发送的信息#G包含的第一传输资源为PSSCH6对应的资源，第一反馈资源为最右边PRB 4对应的资源；PLC向第八个S/A发送的信息#H，该信息#H包含第一传输资源为PSSCH7对应的资源，第一反馈资源为最右边PRB 4对应的资源。
可以看出，PLC将8个S/A分别分成了两组，即第一个S/A至第四个S/A为第一组，第五个S/A至第八个S/A为第二组。其中每一组中的S/A均对应了相同的反馈资源(PRB 0、PRB 4)，PLC对一组S/A发送的PSSCH发送其PSFCH进行反馈，进而减少了PLC发送PSFCH的数量。同时，每组对应的反馈资源为该组中其中一个S/A的PSSCH按照资源池配置映射关系确定的反馈资源，例如第一组中PRB 0按照资源池配置映射关系为PSSCH 0对应的反馈资源位置，因此也不会和其他设备的反馈资源发生冲突。
图8是本申请实施例提供的另一种发送和接收反馈信息的方法示意性流程图。如图8所示，该方法包括：
801，第一设备向第二设备发送信息#1。
相应地，第二设备接收来自第一设备的信息#1。
其中，信息#1包括第一传输资源的信息，第一传输资源用于第一设备接收第二设备的第一数据。
其中，该信息#1用于指示第一设备将在第一传输资源上对第二设备发送的数据进行NACK-only的反馈模式。
应理解，第一传输资源在时域上可以包括一个时隙或多个时隙，在频域上可以包括一个或多个子信道，下文中，主要以第一传输资源上在时域上包括一个时隙，在频域上包括一个或多个连续的子信道为例进行描述。
在一种可能实现的方式中，信息#1包括第一周期性传输资源的信息，第一周期性传输资源包括第一传输资源。
应理解，该信息#1包括第一周期性传输资源的信息，第一周期性传输资源包括第一传输资源，即能够对周期性业务的传输资源进行灵活的指示提高网络的整体性能。
例如，第一周期性传输资源的信息可以包括时间单元的偏置，第一周期性传输资源的周期(例如包括的时间单元个数)，第一周期性传输资源在频域上的起始子信道位置，包括的子信道个数等信息。
802，第二设备在第一传输资源上向第一设备发送第一数据。
相应地，第一设备在第一传输资源上接收第二设备的第一数据。
具体地，当第二设备接收到来自第一设备的信息#1之后，该第二设备根据信息#1中包括的第一传输资源的信息，确定在第一传输资源上向第二设备发送第一数据。第二设备在第一传输资源上向第一设备发送第一数据可以包括：第二设备在第一传输资源上发送PSCCH以及PSSCH，其中PSCCH中包括SCI1，该PSCCH/SCI1用于调度PSSCH，例如包括了PSSCH的频域位置，PSSCH中数据的优先级 等信息，PSSCH中包括了SCI2和第一数据，其中SCI2可以包括第二设备对应的源ID，第一设备对应的目的ID等。
在一种可能实现的方式中，该第二设备在第一传输资源上可以向第一设备发送第一指示信息，该第一指示信息用于指示该第一数据是否为无效数据或者第一数据部分是否为空包，第一指示信息与第一数据相关联。例如第二设备在SCI1中和或SCI2中对第一数据是否为无效数据进行指示。
应理解，当第二设备在第一传输资源上无数据需要发送时，该第二设备在第一传输资源上向第一设备发送第一指示信息，该第一指示信息用于指示该第一数据是否为无效，当第一数据为无效数据时，第一设备也可以不向第二设备发送反馈信息，从而降低第一设备发送反馈信息的数量。
还应理解，步骤802为可选步骤。其中，当第二设备在第一传输资源上没有数据需要进行发送时，则该图8所示的方法可以不包括该步骤802，或者第二设备可以在第一传输资源上发送第一指示信息，该第一指示信息可以用于指示第一数据为无效数据。当第二数据在第一传输资源上有数据需要发送时，即在第一传输资源上发送第一数据，该图8所示的方法包括该步骤802。
803，第一设备确定是否向第二设备发送反馈信息#1。
具体地，第一设备根据在第一传输资源上的接收结果，确定是否向第二设备发送反馈信息#1，该反馈信息#1仅包括NACK信息。
例如，第一设备在第一传输资源先进行PSCCH的盲检，如果检测到PSCCH，根据PSCCH中的SCI1接收PSSCH，该PSSCH中包括了SCI2和数据(例如传输块，Transmission block，TB)。其中，如果SCI2中的源ID对应第二设备，目的ID对应第一设备，则该PSSCH中的数据为第二设备发送给第一设备的第一数据。
在图8所示的方法中，第一设备针对第一传输资源上接收到的信号进行NACK-only模式的反馈，进一步地根据是否成功接收到来自第二设备的第一数据，可以包括如下两种情况：
情况一
803#A，第一设备向第二设备发送反馈信息#1，该反馈信息#1为NACK信息。
相应地，第二设备接收来自第一设备的反馈信息#1。
具体地，当第一设备在第一传输资源上未接收到第一数据时(例如未检测到PSCCH，或者检测到PSCCH但SCI2中的ID没有对应第二设备和第一设备)，或者当第一设备在第一传输资源上接收到第一数据但未成功解码该第一数据时，则该第一设备向第二设备发送反馈信息#1，该反馈信息#1用于指示第一设备未接收到或者未成功解码第二设备的第一数据。
例如，第一设备在第一传输资源未检测到PSCCH，或者未检测到SCI2中包含上述对应的ID，则第一设备可以确定未接收到第二设备给第一设备发送的第一数据，则第一设备在第一反馈资源上发送反馈信息#1，该反馈信息#1为NACK信息。
又例如，当第一设备在第一传输资源上检测到PSCCH，同时也检测到SCI2中的源ID和目的ID也可以分别对应第二设备和第一设备，则第一设备可以确定在第一传输资源上接收第二设备给第一设备发送的第一数据，之后第一设备可以对第一数据进行解码，若未成功解码，则第一设备在第一反馈资源上发送反馈信息#1，该反馈信息#1为NACK信息。
应理解，当第一设备确定在第一传输资源上未成功接收到第一数据或者未成功解码该第一数据，该第一设备在第一传输资源对应的反馈资源(例如第一反馈资源)上向第二设备发送反馈信息#1。该反馈信息#1用于指示第一设备未成功接收到或者未成功解码该第一数据。第二设备接收到该反馈信息#1之后，第二设备可以在第一传输资源上向第一设备重发该第一数据。
还应理解，该反馈资源可以是系统/资源池配置的与第一传输资源存在映射关系的反馈资源，或者该反馈资源也可以是类似与上述图5中第一设备通过指示信息指示的与第一传输资源存在关联关系的反馈资源，或者该反馈资源还可以是网络设备通过指示信息指示的与第一传输资源存在关联关系的反馈资源，对此本申请不做具体限制。
情况二
803#B，第一设备跳过向第二设备发送反馈信息的操作。
具体地，当第一设备在第一传输资源上成功接收到第一数据并成功解码该第一数据时，第一设备跳过向第二设备发送反馈信息的操作。即第一设备无需向第二设备发送反馈信息。该反馈信息用于指示第一设备是否成功接收该第一数据。
应理解，第一设备在第一传输资源上成功接收并成功解码该第一数据时，该第一设备跳过向第二设备发送反馈信息的操作。
还应理解，步骤803#B为第一设备的内部实现过程，在具体操作中，第一设备在第一传输资源上成功接收到第二设备的第一数据，并成功解码该第一数据之后，该第一设备后续没有关于该第一数据的反馈信息的任何操作，即在具体操作实现过程中，第一设备与第二设备之间无反馈信息的传输操作。
可选的，当第二设备在802中向第一设备发送了第一指示信息并且指示第一数据为无效数据或者空包后，第一设备也可以不发送反馈信息。
基于上述图8所示的方法，该方法还可以包括如下步骤804和步骤805：
804，第一设备向第二设备发送激活信息或者去激活信息。
相应地，第二设备接收来自第一设备的激活信息或者去激活信息。
可以理解，该激活信息用于激活第一设备和第二设备间的NACK-only反馈模式，该去激活信息用于去激活第一设备和第二设备之间的NACK-only反馈模式。
其中，激活信息用于指示：在第一设备在第一传输资源上成功接收并解码第一数据的情况下，第一设备跳过向所述第二设备发送反馈信息的操作，即第一设备执行上述步骤803#B。激活信息还用于指示：在第一设备在所述第一传输资源上未成功接收到第一数据，或者成功接收但未解码成功该第一数据的情况下，第一设备向第二设备发送反馈信息#1，即第一设备执行上述步骤803#A。
其中，去激活信息用于指示第一设备根据在第一传输资源上是否成功解码第一数据，确定反馈信息#2，并将该反馈信息#2发送给第二设备，该反馈信息#2包括ACK信息或者NACK信息。作为一种示例，当第一设备在第一传输资源上成功解码第一数据，则该第一设备在第一传输资源上向第二设备发送反馈信息#2，该反馈信息#2包括ACK信息；当第一设备在第一传输资源上未成功解码第一数据，则该第一设备在第一传输资源上向第二设备发送反馈信息#2，该反馈信息#2包括NACK信息。
在一种可能实现的方式中，激活信息或者去激活信息与第一周期性传输资源关联，第一周期性传输资源包括第一传输资源。
在另一种可能实现的方式中，激活信息包括比特位图，去激活信息包括比特位图，比特位图中的第一比特与第一传输资源对应，当第一比特取第一值时，第一比特用于指示：在第一设备在第一传输资源上未接收到或者未成功解码第一数据的情况下，第一设备在第一反馈资源上向第二设备发送反馈信息#1，当在第一设备在第一传输资源上成功解码第一数据的情况下，第一设备跳过向第二设备发送反馈信息的操作；当第一比特取第二值时，第一比特用于指示第一设备根据是否成功解码第一数据，确定向第二设备发送反馈信息#2。
在又一种可能实现的方式中，激活信息包括比特位图，去激活信息包括比特位图，比特位图中的第一比特与第一周期性传输资源对应，第一周期性传输资源包括第一传输资源。
应理解，激活信息和去激活信息的具体表现形式有很多，此处以比特位图的形式进行详细举例。比特位图中的比特与传输资源相对应，例如，第一比特与第一传输资源对应，当第一比特取第一值时，第一比特用于指示若第一设备在第一传输资源上成功解码第二设备的第一数据，则该第一设备执行如上述步骤803#B；若第一设备在第一传输资源上未成功接收或者接收到但未成功解码第二设备的第一数据，则该第一设备执行如上述步骤804#A。当第一比特取第二值时，第一比特用于指示第一设备根据是否在第一传输资源上成功解码第二设备的第一数据，向第二设备发送ACK信息或者NACK信息。
其中，当第一值为“0”时，第二值为“1”；当第一值为“1”时，第二值为“0”。第一值与第二值不同。本申请对第一值与第二值的实际取值不做具体限定。
还应理解，该激活信息和去激活信息可以包含在媒体介入控制(MAC)控制元素信息中，由第一设备发送给第二设备。
在又一种可能实现的方式中，第一设备接收第二设备的第一请求信息，该第一请求信息用于请求第一设备向第二设备发送该激活信息或者去激活信息。
应理解，第二设备可以通过第一请求信息，请求第一设备是否只执行反馈第一设备未成功接收到第一数据的情况。
还应理解，在网络反馈资源充裕的情况下，该第二设备向第一设备发送第一请求信息，该第一请求信用于请求第一设备向第二设备发送去激活信息，例如第二设备可以向第一设备发送第一请求信息，该第一请求信用于请求第一设备向第二设备发送激活信息请求激活NACK-only反馈模式。当第二设备 没有向第一设备的数据传输需求时，第二设备向第一设备发送第一请求信息，该第一请求信用于请求第一设备向第二设备发送去激活信息请求去激活NACK-only反馈模式，从而可以降低第一设备的处理复杂度。
基于上述图8所示的方法，下面将结合图9所示的一种PSFCH资源位置的映射关系示意图，以第一设备为PLC，第二设备为S/A为例，示例性地介绍图8所示的方法。
如图9所示，假设有8个S/A需要分别在PSSCH 0～7上向PLC发送第一数据，则PLC向第一个S/A发送的信息#1a，该信息#1a包含第一传输资源为PSSCH0对应的资源，第一反馈资源为最右边PRB0对应的资源；PLC向第二个S/A发送的信息#1b包含的第一传输资源为PSSCH 1对应的资源，第一反馈资源为最右边PRB1对应的资源；PLC向第三个S/A发送的信息#1c包含的第一传输资源为PSSCH2对应的资源，第一反馈资源为最右边PRB2对应的资源；PLC向第四个S/A发送的信息#1d包含的第一传输资源为PSSCH 3对应的资源，第一反馈资源为最右边PRB3对应的资源…PLC向第八个S/A发送的信息#1h包含的第一传输资源为PSSCH 7对应的资源，第一反馈资源为最右边PRB7对应的资源。
其中，当PLC在一个传输资源上成功接收并解码出PSSCH时，PLC跳过向S/A发送反馈信息的操作，即不会向S/A发送反馈信息。PLC在第一传输资源上没有成功接收到或者成功接收到但未成功解码对应数据，则PLC会在反馈资源上向S/A发送NACK信息。其中，该反馈资源的位置可以按照资源池配置的映射关系和S/A的传输资源的位置进行确定。例如图8中，由于仅有3个PSSCH未成功接收，因此PLC仅用发送3个NACK信息，而现有技术中需要发送8个反馈信息，相比而言，本申请实施例可以减少PLC发送PSFCH的数量。
可以理解，本申请的各实施例中的一些可选的特征，在某些场景下，可以不依赖于其他特征，也可以在某些场景下，与其他特征进行结合，不作限定。
还可以理解，本申请的各实施例中的方案可以进行合理的组合使用，并且实施例中出现的各个术语的解释或说明可以在各个实施例中互相参考或解释，对此不作限定。
还可以理解，上述各个方法实施例中，由设备(终端设备或者网络设备)实现的方法和操作，也可以由可由该设备的组成部件(例如芯片或者电路)来实现不作限定。
相应于上述各方法实施例给出的方法，本申请实施例还提供了相应的装置，所述装置包括用于执行上述各个方法实施例相应的模块。该模块可以是软件，也可以是硬件，或者是软件和硬件结合。可以理解的是，上述各方法实施例所描述的技术特征同样适用于以下装置实施例。
上面结合图5-图9详细介绍了本申请实施例提供的发送和接收反馈信息的方法，下面结合图10-图12详细介绍本申请实施例提供的发送和接收反馈信息的装置。应理解，装置实施例的描述与方法实施例的描述相互对应，因此，未详细描述的内容可以参见上文方法实施例，为了简洁，部分内容不再赘述。
图10是本申请实施例提供的一种发送和接收反馈信息的装置的示意性框图。该装置1000包括收发单元1010，收发单元1010可以用于实现相应的通信功能。收发单元1010还可以称为通信接口或通信单元。
可选地，该装置1000还可以包括处理单元1020，处理单元1020可以用于进行数据处理。
可选地，该装置1000还包括存储单元，该存储单元可以用于存储指令和/或数据，处理单元1020可以读取存储单元中的指令和/或数据，以使得装置实现前述各个方法实施例中不同的终端设备的动作，例如，第一设备、第二设备的动作。
该装置1000可以用于执行上文各个方法实施例中第一设备、第二设备所执行的动作，这时，该装置1000可以为第一设备、第二设备，或者第一设备、第二设备的组成部件，收发单元1010用于执行上文方法实施例中第一设备、第二设备的收发相关的操作，处理单元820用于执行上文方法实施例中第一设备、第二设备的处理相关的操作。
还应理解，这里的装置1000以功能单元的形式体现。这里的术语“单元”可以指应用特有集成电路(application specific integrated circuit，ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。在一个可选例子中，本领域技术人员可以理解，装置1000可以具体为上述实施例中的第一设备、第二设备，可以用于执行上述各方法实施例中与第一设备、第二设备对应的各个流程和/或步骤，或者，装置1000可以具体为上述实施例中的第一设备、第二设备，可以用于执行上述各方法 实施例中与第一设备、第二设备对应的各个流程和/或步骤，为避免重复，在此不再赘述。
上述各个方案的装置1000具有实现上述方法中第一设备、第二设备所执行的相应步骤的功能，或者，上述各个方案的装置1000具有实现上述方法中第一设备、第二设备所执行的相应步骤的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块；例如收发单元可以由收发机替代(例如，收发单元中的发送单元可以由发送机替代，收发单元中的接收单元可以由接收机替代)，其它单元，如处理单元等可以由处理器替代，分别执行各个方法实施例中的收发操作以及相关的处理操作。
此外，上述收发单元1010还可以是收发电路(例如可以包括接收电路和发送电路)，处理单元可以是处理电路。
需要指出的是，图10中的装置可以是前述实施例中的网元或设备，也可以是芯片或者芯片系统，例如：片上系统(system on chip，SoC)。其中，收发单元可以是输入输出电路、通信接口；处理单元为该芯片上集成的处理器或者微处理器或者集成电路。在此不做限定。
如图11所示，本申请实施例提供另一种通信装置1100。该装置1100包括处理器1110，处理器1110与存储器1120耦合，存储器1120用于存储计算机程序或指令和/或数据，处理器1110用于执行存储器1120存储的计算机程序或指令，或读取存储器1120存储的数据，以执行上文各方法实施例中的方法。
可选地，处理器1110为一个或多个。
可选地，存储器1120为一个或多个。
可选地，该存储器1120与该处理器1110集成在一起，或者分离设置。
可选地，如图11所示，该装置1100还包括收发器1130，收发器1130用于信号的接收和/或发送。例如，处理器1110用于控制收发器1130进行信号的接收和/或发送。
作为一种方案，该装置1100用于实现上文各个方法实施例中由第一设备、第二设备执行的操作。
例如，处理器1110用于执行存储器1120存储的计算机程序或指令，以实现上文各个方法实施例中第一控制面设备的相关操作。例如，图5至图9中任意一个所示实施例中的第一设备，或图5至图9中任意一个所示实施例中的第二设备的方法。
应理解，本申请实施例中提及的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中提及的存储器可以是易失性存储器和/或非易失性存储器。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)。例如，RAM可以用作外部高速缓存。作为示例而非限定，RAM包括如下多种形式：静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
需要说明的是，当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时，存储器(存储模块)可以集成在处理器中。
还需要说明的是，本文描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
如图12，本申请实施例提供一种芯片系统1200。该芯片系统1200(或者也可以称为处理系统)包括逻辑电路1210以及输入/输出接口(input/output interface)1220。
其中，逻辑电路1210可以为芯片系统1200中的处理电路。逻辑电路1210可以耦合连接存储单元，调用存储单元中的指令，使得芯片系统1200可以实现本申请各实施例的方法和功能。输入/输出接口1220，可以为芯片系统1200中的输入输出电路，将芯片系统1200处理好的信息输出，或将待处理的数据或信令信息输入芯片系统1200进行处理。
作为一种方案，该芯片系统1200用于实现上文各个方法实施例中由第一设备、第二设备执行的操作。
例如，逻辑电路1210用于实现上文方法实施例中由第一设备的处理相关的操作，如图5至图9中任意一个所示实施例中的第一设备的处理相关的操作；输入/输出接口1220用于实现上文方法实施例中由第一设备的发送和/或接收相关的操作，如图5至图9中任意一个所示实施例中的第一设备执行的发送和/或接收相关的操作。
本申请实施例还提供一种计算机可读存储介质，其上存储有用于实现上述各方法实施例中由第一设备、第二设备执行的方法的计算机指令。
例如，该计算机程序被计算机执行时，使得该计算机可以实现上述方法各实施例中由第一设备、第二设备执行的方法。
本申请实施例还提供一种计算机程序产品，包含指令，该指令被计算机执行时以实现上述各方法实施例中由第一设备、第二设备执行的方法。
上述提供的任一种装置中相关内容的解释及有益效果均可参考上文提供的对应的方法实施例，此处不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。此外，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。例如，所述计算机可以是个人计算机，服务器，或者网络设备等。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD)等。例如，前述的可用介质包括但不限于：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (43)

  1. 一种发送反馈信息的方法，其特征在于，包括：
    第一设备向第二设备发送第一信息，所述第一信息包括第一传输资源的信息和第一反馈资源的信息，所述第一传输资源与所述第一反馈资源相关联，第一反馈资源集合包括所述第一反馈资源，第一资源池的配置信息包括所述第一反馈资源集合的配置信息，所述第一资源池是为所述第一设备和所述第二设备配置的，所述第一传输资源用于所述第一设备接收所述第二设备的第一数据；
    所述第一设备在所述第一反馈资源上向所述第二设备发送反馈信息，所述反馈信息用于指示所述第一设备是否成功接收到所述第一数据。
  2. 根据权利要求1所述的方法，其特征在于，
    所述方法还包括：所述第一设备向第三设备发送第二信息，所述第二信息包括第二传输资源的信息和所述第一反馈资源的信息，所述第二传输资源用于所述第一设备接收来自所述第三设备的第二数据，所述第二传输资源与所述第一反馈资源相关联；
    所述第一设备在所述第一反馈资源上向所述第二设备发送反馈信息，所述反馈信息用于指示所述第一设备是否成功接收到所述第一数据，包括：
    所述第一设备在所述第一反馈资源上向所述第二设备和所述第三设备发送所述反馈信息，所述反馈信息用于指示所述第一设备是否成功接收到所述第一数据和所述第二数据。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一信息包括第一周期性传输资源的信息和第一周期性反馈资源的信息，所述第一周期性传输资源包括所述第一传输资源，所述第一周期性反馈资源包括所述第一反馈资源。
  4. 根据权利要求3所述的方法，其特征在于，所述第一周期性反馈资源的信息包括第三周期性传输资源的信息，所述第三周期性传输资源包括第三传输资源，所述第一周期性反馈资源为第一周期性反馈资源集合中根据第一映射关系与所述第三周期性传输资源对应的周期性反馈资源，所述第一周期性反馈资源集合为所述第一资源池配置的，所述第一映射关系为所述第一资源池中的传输资源与反馈资源的映射关系。
  5. 根据权利要求1至4中任一项所述的方法，其特征在于，所述第一反馈资源的信息包括第三传输资源的信息，所述第一反馈资源为根据第一映射关系与所述第三传输资源对应的反馈资源，所述第一映射关系为所述第一资源池中的传输资源与反馈资源的映射关系。
  6. 根据权利要求2至5中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一设备在第三传输资源上接收第四设备的第三数据；
    所述第一设备在所述第一反馈资源上向所述第四设备发送所述反馈信息，所述第一反馈资源是根据第一映射关系和所述第三传输资源确定的，所述第一映射关系为所述第一资源池中的传输资源与反馈资源的映射关系，所述反馈信息用于指示所述第一设备是否成功接收到所述第一数据，所述第二数据和所述第三数据。
  7. 根据权利要求2所述的方法，其特征在于，所述第一设备在所述第一反馈资源上向所述第二设备和所述第三设备发送所述反馈信息，所述反馈信息用于指示所述第一设备是否成功接收到所述第一数据和所述第二数据,包括：
    当满足以下情形至少之一时，所述第一设备在所述第一反馈资源上向所述第二设备和第三设备发送NACK信息，
    其中，所述情形包括：
    当所述第一设备在所述第一传输资源上未接收到或者未成功解码所述第一数据；
    当所述第一设备在所述第二传输资源上未接收到或者未成功解码所述第二数据。
  8. 根据权利要求2至7中任一项所述的方法，其特征在于，所述第二信息包括第二周期性传输资源的信息和第一周期性反馈资源的信息，所述第二周期性传输资源包括所述第二传输资源，所述第一周期性反馈资源包括所述第一反馈资源。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一设备在所述第一传输资源上接收所述第二设备的第一指示信息，所述第一指示信息用于指示所述第一数据是否为无效数据，所述第一指示信息与所述第一数据相关联。
  10. 根据权利要求1至9中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一设备向所述第二设备发送激活信息或者去激活信息，所述激活信息或者去激活信息与所述第一传输资源相关联，所述激活信息用于指示所述第一设备在所述第一反馈资源上向所述第二设备发送所述第一数据的反馈信息，所述去激活信息用于指示所述第一设备在第二反馈资源上向所述第二 设备发送所述第一数据的反馈信息，所述第二反馈资源为所述第一反馈资源集合中根据第一映射关系与所述第一传输资源对应的反馈资源，所述第一映射关系为所述第一资源池中的传输资源与反馈资源的映射关系。
  11. 根据权利要求10所述的方法，其特征在于，所述激活信息或者去激活信息与第一周期性传输资源关联，所述第一周期性传输资源包括所述第一传输资源。
  12. 根据权利要求10或11所述的方法，其特征在于，所述激活信息包括比特位图，所述去激活信息包括所述比特位图，所述比特位图中的第一比特与所述第一传输资源对应，
    当所述第一比特取第一值时，所述第一比特用于指示所述第一设备在所述第一反馈资源上向所述第二设备发送所述反馈信息，
    当所述第一比特取第二值时，所述第一比特用于指示所述第一设备在所述第二反馈资源上向所述第二设备发送所述反馈信息。
  13. 根据权利要求10至12中任一项所述的方法，其特征在于，所述激活信息和所述去激活信息包含在媒体介入控制MAC控制元素信息中。
  14. 根据权利要求1至13中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一设备接收所述第二设备的第一请求信息，所述第一请求信息用于请求所述第一设备向所述第二设备发送所述激活信息或者所述去激活信息。
  15. 一种接收反馈信息的方法，其特征在于，包括：
    第二设备接收第一设备的第一信息，所述第一信息包括第一传输资源的信息和第一反馈资源的信息，所述第一传输资源与所述第一反馈资源相关联，第一反馈资源集合包括所述第一反馈资源，所述第一资源池的配置信息包括所述第一反馈资源集合的配置信息，所述第一资源池是为所述第一设备和所述第二设备配置，所述第一传输资源用于所述第二设备向所述第一设备发送第一数据；
    所述第二设备在所述第一反馈资源上接收所述第一设备的反馈信息，所述反馈信息用于指示所述第一设备是否成功接收到所述第一数据。
  16. 根据权利要求15所述的方法，其特征在于，所述第一信息包括第一周期性传输资源的信息和第一周期性反馈资源的信息，所述第一周期性传输资源包括所述第一传输资源，所述第一周期性反馈资源包括所述第一反馈资源。
  17. 根据权利要求15或16所述的方法，其特征在于，所述第一反馈资源的信息包括第三传输资源的信息，所述第一反馈资源为根据第一映射关系与所述第三传输资源对应的反馈资源，所述第一映射关系为所述第一资源池中的传输资源与反馈资源的映射关系。
  18. 根据权利要求16或17所述的方法，其特征在于，所述第一周期性反馈资源的信息包括第三周期性传输资源的信息，所述第三周期性传输资源包括所述第三传输资源，所述第一周期性反馈资源为第一周期性反馈资源集合中根据第一映射关系与所述第三周期性传输资源对应的周期性反馈资源，所述第一周期性反馈资源集合为所述第一资源池配置的。
  19. 根据权利要求15至18中任一项所述的方法，其特征在于，所述方法还包括：
    所述第二设备在所述第一传输资源上向所述第一设备发送第一指示信息，所述第一指示信息用于指示所述第一数据是否为无效数据，所述第一指示信息与所述第一数据相关联。
  20. 根据权利要求19所述的方法，其特征在于，所述第二设备在所述第一传输资源上向所述第一设备发送所述第一指示信息，包括：
    当所述第二设备在所述第一传输资源上无数据传输需求时，所述第二设备在所述第一传输资源上向所述第一设备发送所述第一指示信息。
  21. 根据权利要求15至20中任一项所述的方法，其特征在于，所述方法还包括：
    所述第二设备接收所述第一设备的激活信息或者去激活信息，所述激活信息或者去激活信息与所述第一传输资源相关联，所述激活信息用于指示所述第二设备在所述第一反馈资源上接收来自所述第一设备的所述反馈信息，所述去激活信息用于指示所述第二设备在第二反馈资源上接收所述第一设备的所述反馈信息，所述第二反馈资源是根据所述第一资源池中的传输资源与反馈资源的映射关系确定的与所述第一传输资源对应的反馈资源。
  22. 根据权利要求21所述的方法，其特征在于，所述激活信息或者去激活信息与第一周期性传输资源关联，所述第一周期性传输资源包括所述第一传输资源。
  23. 根据权利要求21或22所述的方法，其特征在于，所述激活信息包括比特位图，所述去激活信息包括所述比特位图，所述比特位图中的第一比特与所述第一传输资源对应，
    当所述第一比特取第一值时，所述第一比特用于指示所述第二设备在所述第一反馈资源上接收所述反馈信息，
    当所述第一比特取第二值时，所述第一比特用于指示所述第二设备在所述第二反馈资源上接收所述反馈信息。
  24. 根据权利要求21至23中任一项所述的方法，其特征在于，所述激活信息和所述去激活信息包含在媒体接入控制MAC控制元素信息中。
  25. 根据权利要求15至24中任一项所述的方法，其特征在于，所述方法还包括：
    所述第二设备向所述第一设备发送第一请求信息，所述第一请求信息用于请求所述第一设备向所述第二设备发送所述激活信息或者所述去激活信息。
  26. 一种发送反馈信息的方法，其特征在于，包括：
    第一设备向第二设备发送第一信息，所述第一信息包括第一传输资源的信息，所述第一传输资源用于所述第一设备接收所述第二设备发送的第一数据，所述第一传输资源与第一反馈资源相关联，第一反馈资源集合包括所述第一反馈资源，第一资源池的配置信息包括所述第一反馈资源集合的配置信息，所述第一资源池是为所述第一设备和所述第二设备配置的资源池，所述第一反馈资源用于所述第一设备发送第一反馈信息；
    当所述第一设备在所述第一传输资源上未接收到或未成功解码所述第一数据时，所述第一设备在所述第一反馈资源上向所述第二设备发送所述第一反馈信息，所述第一反馈信息为NACK信息。
  27. 根据权利要求26所述的方法，其特征在于，当所述第一设备在所述第一传输资源上成功解码所述第一数据时，所述第一设备跳过向所述第二设备发送反馈信息的操作。
  28. 根据权利要求26或27所述的方法，其特征在于，所述第一信息包括第一周期性传输资源的信息，所述第一周期性传输资源包括所述第一传输资源。
  29. 根据权利要求26至28中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一设备在所述第一传输资源上接收所述第二设备的第一指示信息，所述第一指示信息用于指示所述第一数据是否为无效数据，所述第一指示信息与所述第一数据相关联。
  30. 根据权利要求29所述的方法，其特征在于，当所述第一指示信息用于指示所述第一数据为无效数据时，所述第一设备跳过向所述第二设备发送反馈信息的操作。
  31. 根据权利要求26至30中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一设备向所述第二设备发送激活信息或者去激活信息，
    其中，
    所述激活信息用于指示：所述第一反馈资源用于所述第一设备发送所述第一反馈信息，在所述第一设备在所述第一传输资源上未接收到或者未成功解码所述第一数据的情况下，所述第一设备在所述第一反馈资源上向所述第二设备发送所述第一反馈信息；
    所述去激活信息用于指示：所述第一反馈资源用于所述第一设备发送第二反馈信息，所述第二反馈信息包括NACK信息或者ACK信息，所述第一设备根据是否成功解码所述第一数据，确定在所述第一反馈资源上向所述第二设备发送所述第二反馈信息。
  32. 根据权利要求31所述的方法，其特征在于，所述激活信息还用于指示：在所述第一设备在所述第一传输资源上成功解码所述第一数据的情况下，所述第一设备跳过向所述第二设备发送反馈信息的操作。
  33. 根据权利要求31或者32所述的方法，其特征在于，所述激活信息或者所述去激活信息与第一周期性传输资源相关联，所述第一周期性传输资源包括所述第一传输资源。
  34. 根据权利要求31至33中任一项所述的方法，其特征子在于，所述激活信息包括比特位图，所述去激活信息包括所述比特位图，所述比特位图中的第一比特与所述第一传输资源对应，
    当所述第一比特为第一值时，所述第一比特用于指示所述第一反馈资源用于所述第一设备发送所述第一反馈信息，在所述第一设备在所述第一传输资源上未接收到或者未成功解码所述第一数据的情况下，所述第一设备在所述第一反馈资源上向所述第二设备发送所述第一反馈信息；
    当所述第一比特为第二值时，所述第一比特用于指示所述第一反馈资源用于所述第一设备发送所述第二反馈信息，所述第一设备根据是否成功解码所述第一数据，确定在所述第一反馈资源上向所述第二设备发送所述第二反馈信息。
  35. 根据权利要求34所述的方法，其特征在于，当所述第一比特为第一值时，所述第一比特用于指示：在所述第一设备在第一传输资源上成功解码所述第一数据的情况下，所述第一设备跳过向所述第二设备发送反馈信息的操作。
  36. 根据权利要求31至35中任一项所述的方法，其特征在于，所述激活信息和所述去激活信息包含在媒体接入控制MAC控制元素信息中。
  37. 根据权利要求26至36中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一设备接收所述第二设备的第一请求信息，所述第一请求信息用于请求所述第一设备向所述第二设备发送所述去激活信息。
  38. 一种发送反馈信息的装置，其特征在于，包括处理器，所述处理器，用于执行存储器中存储的计算机程序或指令，以使得所述装置执行权利要求1至14中任一项所述的方法，或者，以使得所述装置执行权利要求26至37中任一项所述的方法。
  39. 一种接收反馈信息的装置，其特征在于，包括处理器，所述处理器，用于执行存储器中存储的计算机程序或指令，以使得所述装置执行权利要求15至25中任一项所述的方法。
  40. 根据权利要求38或39所述的装置，其特征在于，所述装置还包括所述存储器和/或通信接口，所述通信接口与所述处理器耦合，
    所述通信接口，用于输入和/或输出信息。
  41. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有计算机程序或指令，当所述计算机程序或指令在通信装置上运行时，使得所述通信装置执行如权利要求1至14中任一项所述的方法，或者，使得所述通信装置执行如权利要求15至25中任一项所述的方法，或者，使得所述通信装置执行如权利要求26至37中任一项所述的方法。
  42. 一种计算机程序产品，其特征在于，所述计算机程序产品包括用于执行如权利要求1至14中任一项所述的方法的计算机程序或指令，或者，执行如权利要求15至25中任一项所述的方法的计算机程序或指令，或者，执行如权利要求26至37中任一项所述的方法的计算机程序或指令。
  43. 一种芯片，其特征在于，所述芯片与存储器耦合，用于读取并执行所述存储器中存储的程序指令，以实现如权利要求1至14中任一项所述的方法，或者，以实现如权利要求15至25中任一项所述的方法，或者，以实现如权利要求26至37中任一项所述的方法。
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