WO2022262658A1 - 反馈指示方法及装置 - Google Patents

反馈指示方法及装置 Download PDF

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Publication number
WO2022262658A1
WO2022262658A1 PCT/CN2022/098192 CN2022098192W WO2022262658A1 WO 2022262658 A1 WO2022262658 A1 WO 2022262658A1 CN 2022098192 W CN2022098192 W CN 2022098192W WO 2022262658 A1 WO2022262658 A1 WO 2022262658A1
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WIPO (PCT)
Prior art keywords
feedback
information
type
sensing
indicate
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PCT/CN2022/098192
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English (en)
French (fr)
Inventor
狐梦实
韩霄
杜瑞
于健
刘辰辰
吕艺
杨讯
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to BR112023026755A priority Critical patent/BR112023026755A2/pt
Priority to CA3223205A priority patent/CA3223205A1/en
Priority to AU2022291898A priority patent/AU2022291898A1/en
Priority to EP22824138.6A priority patent/EP4346138A1/en
Priority to KR1020247001232A priority patent/KR20240021896A/ko
Priority to JP2023577633A priority patent/JP2024522762A/ja
Publication of WO2022262658A1 publication Critical patent/WO2022262658A1/zh
Priority to US18/541,477 priority patent/US20240121306A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0028—Formatting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0025—Transmission of mode-switching indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0028—Formatting
    • H04L1/003—Adaptive formatting arrangements particular to signalling, e.g. variable amount of bits

Definitions

  • the present application relates to the communication field, and in particular to a feedback indication method and device.
  • Wireless passive sensing is a technology that can perceive the state of the target without the need for the target to carry a signal source, such as an electronic tag.
  • the devices in the sensing process may include: a sending device and a receiving device.
  • the sending device and the receiving device may be two different devices.
  • the sending device may send a measurement signal, such as a null data packet (NDP).
  • NDP null data packet
  • the receiving device can receive the measurement signal interfered by the target object, and determine the channel variation between the preset reference measurement signal and the measurement signal interfered by the target object, such as channel state information (CSI).
  • CSI channel state information
  • the receiving device can directly feed back the channel change to the sending device, so that the sending device can determine the state of the target according to the channel change, so as to realize functions such as motion monitoring, gesture recognition, breathing and sleep monitoring, etc.
  • Embodiments of the present application provide a feedback indication method and device for more comprehensive feedback indication, thereby improving the applicability of sensing technology in multi-device and multiple interaction scenarios.
  • a feedback indication method includes: the first device generates a first frame and sends the first frame.
  • the first frame includes: first information, where the first information is used to indicate the feedback type of the first feedback, and/or, the feedback type of the second feedback.
  • the first feedback and the second feedback are feedbacks of different levels.
  • the first information indicates the feedback types of multiple feedbacks at different levels, such as the feedback type of the first feedback, and/or, the second
  • the feedback type of the second feedback can realize a more comprehensive and precise indication of the feedback type, thereby improving the applicability of the perception technology in multi-device and multiple interaction scenarios.
  • the first frame may further include: mode indication information, and the mode indication information may be used to indicate that the first information indicates any of the following: the feedback type of the first feedback, the feedback type of the second feedback, Or the feedback type of the first feedback and the feedback type of the second feedback.
  • the receiving device such as the second device, can accurately determine the indication content of the first information according to the mode indication information, so as to avoid false feedback caused by incorrect determination of the indication content of the first information, thereby improving the stability of measurement.
  • the feedback type of the first feedback may include at least one of the following: uncompressed channel state information CSI, compressed CSI, empty data packet NDP, sensing measurement results, the feedback type determined by the sensing initiator, The feedback type is determined by the sensing responder, the feedback type is determined by the sensing sending end, or the feedback type is determined by the sensing receiving end, and the sensing initiator is the first device. It can be seen that the first device can flexibly determine the feedback type of the first feedback according to actual needs. For example, if communication efficiency needs to be improved, the first device may determine that the feedback type of the first feedback is compressed CSI, so as to reduce the data size of the first feedback, thereby improving communication efficiency and reducing communication overhead.
  • the first device may determine that the feedback type of the first feedback is NDP, so that the first device can determine the sensing measurement result by itself according to the NDP, thereby avoiding other devices, such as the sensing response end, The sensing sending end or the sensing receiving end determines the time delay caused by the sensing measurement result, so as to improve measurement efficiency.
  • the first device may determine that the feedback type is a perception measurement result, so that the first device can receive perception measurement results from other devices, so that the first device does not need to calculate the perception measurement result by itself , so as to reduce the computing load of the first device.
  • the first device may determine that the feedback type of the first feedback is determined by other devices, so that the first feedback can meet the business needs of other devices, To improve the reliability and stability of the business.
  • the feedback type of the second feedback may include at least one of the following: uncompressed CSI, compressed CSI, NDP, perception measurement results, the feedback type determined by the perception initiator, and the feedback determined by the perception responder type, the feedback type is determined by the sensing sending end, or the feedback type is determined by the sensing receiving end, and the sensing initiator is the first device. It can be seen that the first device can flexibly determine the feedback type of the second feedback according to actual needs. For example, if communication efficiency needs to be improved, the first device may determine that the feedback type of the second feedback is compressed CSI, so as to reduce the data size of the second feedback, thereby improving communication efficiency and reducing communication overhead.
  • the first device may determine that the feedback type of the second feedback is NDP, so that the first device can determine the perception measurement result by itself according to the NDP, thereby avoiding problems caused by other devices determining the perception measurement result. delay to improve measurement efficiency.
  • the first device may determine that the feedback type of the second feedback is a sensory measurement result, so that the first device can receive sensory measurement results from other devices, so that the first device does not need to The perception measurement result is calculated to reduce the computing load of the first device.
  • the first device may determine that the feedback type of the second feedback is determined by other devices, so that the second feedback can meet the business needs of other devices, To improve the reliability and stability of the business.
  • the first information may be carried in at least one of the following: signaling in the perception establishment phase, or a perception request message in the perception measurement phase, so as to realize signaling multiplexing, thereby reducing communication overhead and improving communication efficiency.
  • the first feedback and the second feedback are different levels of feedback, which may refer to: the sending timing of the first feedback is different from the sending timing of the second feedback, or the sending object of the first feedback is different from the sending object of the second feedback.
  • the sender is different.
  • the first information may include: a first field and/or a second field.
  • the first field may be used to indicate the feedback type of the first feedback
  • the second field may be used to indicate the feedback type of the second feedback.
  • a feedback indication method includes: the second device receives the first frame and parses the first frame.
  • the first frame includes: first information, where the first information is used to indicate the feedback type of the first feedback, and/or, the feedback type of the second feedback.
  • the first feedback and the second feedback are feedbacks of different levels.
  • the first frame may further include: mode indication information.
  • the mode indication information may be used to indicate that the first information indicates any of the following: a feedback type of the first feedback, a feedback type of the second feedback, or a feedback type of the first feedback and a feedback type of the second feedback.
  • the feedback type of the first feedback may include at least one of the following: uncompressed CSI, compressed CSI, NDP, perception measurement results, the feedback type determined by the perception initiator, and the feedback determined by the perception responder type, the feedback type is determined by the sensing sending end, or the feedback type is determined by the sensing receiving end, and the sensing sending end may be the second device.
  • the feedback type of the second feedback may include at least one of the following: uncompressed CSI, compressed CSI, NDP, perception measurement results, the feedback type determined by the perception initiator, and the feedback determined by the perception responder type, the feedback type is determined by the sensing sending end, or the feedback type is determined by the sensing receiving end, and the sensing sending end may be the second device.
  • the first feedback and the second feedback are different levels of feedback, which may refer to: the sending timing of the first feedback is different from the sending timing of the second feedback, or the sending object of the first feedback is different from the sending object of the second feedback.
  • the sender is different.
  • the method according to the second aspect may further include: the second device sends the second information to the third device.
  • the second information is used to indicate that the feedback type of the first feedback includes at least one of the following: uncompressed CSI, compressed CSI, NDP, perceptual measurement results, or the feedback type determined by the perceptual receiving end, and the perceiving receiving end may be the first Three devices.
  • the second information may supplement the content indicating the first feedback, so as to ensure that the third device can normally send the first feedback, thereby ensuring the stability of the measurement.
  • the second information may be carried in at least one of the following: signaling in the sensing measurement phase, or signaling in the sensing reporting phase, so as to implement signaling multiplexing, thereby reducing communication overhead and improving communication efficiency.
  • the first information may include: a first field and a second field.
  • the first field may be used to indicate the feedback type of the first feedback
  • the second field may be used to indicate the feedback type of the second feedback.
  • the first field may be used to indicate that the feedback type of the first feedback includes at least one of the following: uncompressed CSI, compressed CSI, NDP, sensory measurement results, or the feedback type determined by the sensory receiver, and the sensory receiver
  • the end may be a third device, and after the second device parses the first frame, the method described in the second aspect may further include: the second device only sends the first field to the third device.
  • the second field may be used to indicate the feedback type of the second feedback includes: the feedback type is determined by the sensing receiving end, and the sensing receiving end may be a third device. After the second device parses the first frame, the second aspect The method may further include: the second device only sends the second field to the third device.
  • the second device may only send the first field without sending the second field.
  • the second device may only send the second field instead of the first field. In this way, sending redundant information can be avoided, thereby reducing communication overhead and improving communication efficiency.
  • the method described in the second aspect may further include: the second device receives third information from the third device.
  • the third information may be used to indicate that the feedback type of the second feedback includes at least one of the following: uncompressed CSI, compressed CSI, NDP, or perception measurement results. It can be seen that if the second device does not determine that the feedback type of the second feedback is at least one of the following: uncompressed CSI, compressed CSI, NDP, or perception measurement results, that is, the content of the second feedback is not determined, then the third The device may additionally determine the content of the first feedback, so as to ensure that the second device can normally send the second feedback, thereby ensuring the stability of the measurement.
  • the first information may be carried in at least one of the following: signaling in the perception establishment phase, or signaling in the perception measurement phase, so as to realize signaling multiplexing, thereby reducing communication overhead and improving communication efficiency .
  • a feedback indication method includes: the first device sends fourth information to receive the first feedback and/or the second feedback.
  • the fourth information is used to indicate that the first device needs to acquire the first feedback and/or the second feedback, and the first feedback and the second feedback are feedbacks of different levels.
  • the first device may send the fourth information to the second device according to actual requirements, such as service requirements.
  • the second device can send feedback that is actually needed to the first device according to the fourth information, but not feedback that is not actually needed, so as to avoid sending redundant information, thereby reducing communication overhead and improving communication efficiency.
  • the first feedback and the second feedback are different levels of feedback, which may refer to: the sending timing of the first feedback is different from the sending timing of the second feedback, or the sending object of the first feedback is different from the sending object of the second feedback.
  • the sender is different.
  • the fourth information can be carried in at least one of the following: signaling in the perception establishment phase, perception request message in the perception measurement phase, so as to realize signaling multiplexing, thereby reducing communication overhead and improving communication efficiency .
  • a feedback indication method includes: the second device receives fourth information, so as to send the first feedback and/or the second feedback according to the fourth information.
  • the fourth information is used to indicate that the first device needs to acquire the first feedback and/or the second feedback, and the first feedback and the second feedback are feedbacks of different levels.
  • the first feedback and the second feedback are different levels of feedback, which may refer to: the sending timing of the first feedback is different from the sending timing of the second feedback, or the sending object of the first feedback is different from the sending object of the second feedback.
  • the sender is different.
  • the fourth information may be carried in at least one of the following: signaling in a perception establishment phase, and a sensing request message in a sensing measurement phase.
  • the technical effect of the feedback indication method described in the fourth aspect can refer to the technical effect of the feedback indication method described in the third aspect, which will not be repeated here.
  • a feedback indication method includes: the first device generates fifth information, and sends the fifth information.
  • the fifth information is used to instruct the second device to determine all configuration parameters of NDPA, or the fifth information is used to indicate a part of configuration parameters of NDPA, and another part of configuration parameters of NDPA is determined by the second device.
  • the configuration parameters of NDPA can be determined jointly by the first device and the second device, it is possible to flexibly determine the configuration parameters of NDPA according to business needs, so that the configuration parameters of NDPA can meet business needs . For example, if the service of the first device requires the configuration parameters of the NDPA, the first device determines the configuration parameters of the NDPA. However, if the service of the second device requires the configuration parameters of the NDPA, the first device instructs the second device to determine at least part of the configuration parameters of the NDPA to meet the service requirements of the second device.
  • the fifth information may be carried in one or more of the following: signaling in the perception establishment phase, or a perception request message in the perception measurement phase, so as to realize signaling multiplexing, thereby reducing communication overhead, Improve communication efficiency.
  • a feedback indication method includes: the second device receives fifth information, and parses the fifth information.
  • the fifth information is used to instruct the second device to determine all configuration parameters of NDPA, or the fifth information is used to indicate a part of configuration parameters of NDPA, and another part of configuration parameters of NDPA is determined by the second device.
  • the fifth information may be carried in one or more of the following: signaling in the perception establishment phase, or a perception request message in the perception measurement phase.
  • a feedback indicating device in a seventh aspect, includes: a module, unit, or means (means) for executing the method as described in the first aspect, the third aspect or the fifth aspect, and the module, unit, or means can be implemented by hardware or software , or execute the corresponding software implementation through hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • the feedback indicating device may be the first device in the first aspect, the third aspect or the fifth aspect, or a device including the first device, or a device included in the first device, such as a chip.
  • a feedback indicating device includes: a module, unit, or means (means) for executing the method as described in the second aspect, the fourth aspect, or the sixth aspect, and the module, unit, or means can be implemented by hardware or software , or execute the corresponding software implementation through hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • the feedback indication device may be the second device in the above-mentioned second aspect, fourth aspect or sixth aspect, or a device including the above-mentioned second device, or a device included in the above-mentioned second device, such as a chip.
  • a feedback indicating device including: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the feedback indicating device can execute the method described in any one of the above aspects. method.
  • the feedback indication device may be the first device in the first aspect, the third aspect or the fifth aspect, or a device including the first device, or a device included in the first device.
  • the feedback indication device may be the second device in the above-mentioned second aspect, the fourth aspect or the sixth aspect, or a device that includes the above-mentioned second device, or a device that is included in the above-mentioned second device
  • a communication system in a tenth aspect, includes the first device described in the above aspect and the second device described in the above aspect.
  • a computer-readable storage medium for storing a computer program, and the computer program includes instructions for executing any one of the methods of the first aspect to the sixth aspect.
  • a computer program includes instructions for executing any one of the methods of the first aspect to the sixth aspect.
  • Figure 1 is a schematic diagram of the first perception process architecture
  • FIG. 2 is a schematic flow diagram of the perception process 1
  • Fig. 3 is a schematic flow diagram II of the sensing process
  • Figure 4 is a schematic diagram of the second perception process architecture
  • FIG. 5 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • FIG. 6 is a first schematic flowchart of the feedback indication method provided by the embodiment of the present application.
  • FIG. 7 is a schematic diagram of the architecture of scenario A
  • FIG. 8 is a first schematic flowchart of the feedback indication method provided in the embodiment of the present application in scenario A;
  • FIG. 9 is a schematic flow diagram II of the feedback indication method provided in the embodiment of the present application in scenario A;
  • FIG. 10 is a schematic flow diagram III of the feedback indication method provided in the embodiment of the present application in scenario A;
  • FIG. 11 is a schematic flow diagram IV of the feedback indication method provided in the embodiment of the present application in scenario A;
  • FIG. 12 is a schematic diagram of the architecture of scene B
  • FIG. 13 is a first schematic flow diagram of the feedback indication method provided in the embodiment of the present application in scenario B;
  • FIG. 14 is a schematic flow diagram II of the feedback indication method provided in the embodiment of the present application in scenario B;
  • FIG. 15 is a schematic flow diagram III of the feedback indication method provided in the embodiment of the present application in scenario B;
  • FIG. 16 is a schematic flow diagram IV of the feedback indication method provided in the embodiment of the present application in scenario B;
  • FIG. 17 is a schematic diagram of the architecture of scenario C.
  • FIG. 18 is a first schematic flowchart of the feedback indication method provided in the embodiment of the present application in scenario C;
  • FIG. 19 is a schematic flow diagram II of the feedback indication method provided in the embodiment of the present application in scenario C;
  • FIG. 20 is a schematic flow diagram III of the feedback indication method provided in the embodiment of the present application in scenario C;
  • FIG. 21 is a schematic flow diagram IV of the feedback indication method provided in the embodiment of the present application in scenario C;
  • FIG. 22 is a schematic flow diagram five of the feedback indication method provided in the embodiment of the present application in scenario C;
  • FIG. 23 is the second schematic flow diagram of the feedback indication method provided by the embodiment of the present application.
  • FIG. 24 is a schematic flow diagram five of the feedback indication method provided in the embodiment of the present application in scenario A;
  • FIG. 25 is a schematic flow diagram five of the feedback indication method provided in the embodiment of the present application in scenario B;
  • FIG. 26 is a schematic flowchart of the feedback indication method provided in the embodiment of the present application in scenario C (sixth);
  • FIG. 27 is a schematic flow diagram III of the feedback indication method provided by the embodiment of the present application.
  • FIG. 28 is a schematic structural diagram of a feedback indicating device applied to a sending end provided by an embodiment of the present application.
  • FIG. 29 is a first structural schematic diagram of a feedback indicating device applied to a receiving end provided by an embodiment of the present application.
  • FIG. 30 is a second structural schematic diagram of a feedback indicating device applied to a sending end provided by an embodiment of the present application.
  • FIG. 31 is a second structural schematic diagram of a feedback indicating device applied to a receiving end provided by an embodiment of the present application.
  • FIG. 32 is a schematic structural diagram III of a feedback indicating device applied to a sending end provided by an embodiment of the present application.
  • FIG. 33 is a third structural schematic diagram of a feedback indication device applied to a receiving end provided by an embodiment of the present application.
  • the sensing process can include multiple roles, such as sensing initiator, sensing responder, sensing transmitter, and sensing receiver ).
  • the sensing initiator is used to initiate the sensing process
  • the sensing responder is used to participate in the sensing process initiated by the sensing initiator
  • the sensing sender is used to initiate sensing measurements during the sensing process, such as sending NDP
  • the sensing receiver is used to respond to the sensing measurement, determine the sensing measurement result, such as CSI, and feed back the sensing measurement result to the sensing initiator. It can be seen that the above roles do not conflict with each other.
  • a device may have one or more of the above roles.
  • the sensing initiator, the sensing responder, the sensing sending end, and the sensing receiving end may be the same device, or may be two different devices.
  • the devices in the sensing process include: device A and device B, where device A may be the sensing initiator as the sensing sender, and device B may be the sensing responder as the sensing receiver.
  • device A may be the sensing initiator as the sensing sender
  • device B may be the sensing responder as the sensing receiver.
  • the following uses device A and device B as examples to describe the above sensing process in detail.
  • FIG. 2 is a schematic flow chart of the above sensing process
  • FIG. 3 is a schematic flow chart II of the above sensing process.
  • the above perception process may include the following steps:
  • Device A and device B exchange signaling to establish a sensing process.
  • device A and device B can exchange signaling.
  • device A sends a perception establishment request message to device B
  • device B sends a perception establishment reception message to device A to inform each other during the sensing process
  • device A is the sensing initiator and sensing sender
  • device B is the sensing responder and sensing receiving end, so as to establish a sensing process, or establish a sensing session.
  • Device A sends a null data packet announcement (null data packet announcement, NDPA).
  • NDPA null data packet announcement
  • the perception measurement phase may be entered.
  • device A may send NDPA at a certain time point, such as the first time point.
  • NDPA is used to indicate that device A will perform perception measurement at a second time point after the first time point, such as the next frame separated from NDPA by a short interframe space (SIFS), such as sending an empty data packet (null data packet, NDP), and a configuration indicating the NDP, such as a long training field (long training field, LTF), so that device B can receive and process the NDP at the second time point.
  • SIFS short interframe space
  • NDP empty data packet
  • LTF long training field
  • device B may determine the feedback (feedback) that needs to be sent to device A according to a pre-configured feedback type (feedback type), such as feedback 1.
  • the feedback type may be used to determine the content of the feedback, including one or more of the following: CSI, such as compressed CSI, and uncompressed CSI, perceptual measurement results, or NDP.
  • CSI such as compressed CSI, and uncompressed CSI, perceptual measurement results, or NDP.
  • the feedback type includes CSI
  • device B may determine feedback 1, that is, CSI, according to the NDP.
  • the feedback type includes perception measurement results
  • device B can determine feedback 1 based on the CSI, such as the currently determined CSI, and the historically determined CSI, that is, the perception measurement results, such as whether the target is moving, the type of movement, whether it is sleeping, etc.
  • the feedback type includes NDP
  • device B may determine feedback 1, that is, NDP, according to the above NDP configuration.
  • Device A sends a feedback request (feedback trigger) message.
  • device A after sending the NDP, device A can enter the sensing report stage.
  • device A may send a feedback request message at a third time point, for example, a next frame separated from NDP by one SIFS.
  • the feedback request message may be used to instruct device B to perform feedback at a fourth time point after the third time point, for example, to perform feedback in the next frame separated by one SIFS from the feedback request message, for example, to send feedback 1 .
  • Device B sends feedback 1 to device A.
  • device B may send feedback 1 to device A at the fourth time point.
  • Feedback 1 may include one or more of the above CSI, perception measurement results, or NDP.
  • device A can obtain or determine the perception measurement result of the target object according to the feedback 1 .
  • the device in the sensing process includes the above-mentioned device A and device B, it also includes device C, and device A is the sensing initiator, device B is the sensing response end of the sensing sender, and device C If it is the sensing response end for sensing the receiving end, two feedbacks are required. For example, device B needs to send one feedback to device A, such as feedback 1, and device C needs to send another feedback to device B, such as feedback 2. However, if according to the current Only one of the feedbacks can be determined, such as the feedback type of Feedback 1, but the other feedback, such as the feedback type of Feedback 2, cannot be determined. In other words, the current feedback method is no longer suitable for multi-device and multi-interaction multi-feedback scenarios.
  • the technical solutions of the embodiments of the present application can be applied to various communication systems, such as wireless fidelity (WiFi) systems, vehicle-to-everything (V2X) communication systems, device-to-devie (D2D) Communication systems, IoV communication systems, 4th generation (4G) mobile communication systems, such as long term evolution (LTE) systems, worldwide interoperability for microwave access (WiMAX) communication systems,
  • 4G 4th generation mobile communication systems, such as long term evolution (LTE) systems, worldwide interoperability for microwave access (WiMAX) communication systems
  • the fifth generation (5th generation, 5G) mobile communication system such as the new air interface (new radio, NR) system
  • future communication systems such as the sixth generation (6th generation, 6G) mobile communication system, etc.
  • the present application presents various aspects, embodiments or features in terms of a system that can include a number of devices, components, modules and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules etc. discussed in connection with the figures. In addition, combinations of these schemes can also be used.
  • a subscript such as W 1 may be a clerical error into a non-subscript form such as W1.
  • the network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.
  • FIG. 5 is a schematic structural diagram of a communication system to which the feedback indication method provided in the embodiment of the present application is applicable.
  • the communication system includes multiple devices, such as a first device, a second device and a third device.
  • at least one device in the plurality of devices such as the first device can determine the feedback type of all feedback or the feedback type of partial feedback, and the remaining feedback, such as the feedback type not determined by at least one device, can be determined by other devices, such as multiple Devices other than the first device in the first device, as determined by the second device.
  • the second device may be connected to the first device and the third device respectively.
  • the third device may also be connected to the first device.
  • any one of the first device, the second device, and the third device may be a network device or a terminal device, which is not limited.
  • the above-mentioned network device is a device located on the network side of the above-mentioned communication system and having a wireless transceiver function or a chip or a chip system that can be provided in the device.
  • the network equipment includes but not limited to: access point (access point, AP) in wireless fidelity (wireless fidelity, WiFi) system, such as home gateway, router, server, switch, bridge, etc., evolved node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home Base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit, BBU), wireless relay node, wireless backhaul node, transmission point (transmission and reception point, TRP or transmission point, TP) etc., can also be 5G, such as gNB in the new air
  • the above-mentioned terminal device is a terminal that accesses the above-mentioned communication system and has a wireless transceiver function, or a chip or a chip system that can be installed in the terminal.
  • the terminal equipment may also be called a user device, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device.
  • the terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal Equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety ( Wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, vehicle-mounted terminals, RSUs with terminal functions, etc.
  • a virtual reality virtual reality
  • AR augmented reality
  • wireless terminals in industrial control wireless terminals in self driving
  • wireless terminals in remote medical wireless terminals in smart grid
  • transportation safety Wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, vehicle-mounted terminals, RSUs with terminal functions, etc.
  • the feedback indication method provided by the embodiment of the present application can be applied between two or three devices shown in Figure 5, such as between the first device and the second device, between the first device and the second device Between the third device and the third device, reference may be made to the following method embodiments for specific implementation, which will not be repeated here.
  • FIG. 5 is only a simplified schematic diagram for easy understanding, and the communication system may also include other network devices and/or other terminal devices, which are not shown in FIG. 5 .
  • the feedback indicating method provided by this application may include multiple embodiments, such as the first embodiment, the second embodiment and the third embodiment, and the following will describe various embodiments of the feedback indicating method in conjunction with FIGS. 6-24 Be specific.
  • FIG. 6 is a first schematic flowchart of a feedback indication method provided in an embodiment of the present application.
  • the feedback indication method may be applicable to the three devices shown in FIG. 5 , such as the communication among the first device, the second device and the third device.
  • any one of the first device, the second device and the third device may be one or more of the following: a sensing initiator, a sensing responder, a sensing sending end, or a sensing receiving end.
  • the sensing initiator is the first device
  • the sensing sending end and the sensing responding end are the second device
  • the second device is the sensing responding end, sensing receiving end, and sensing responding end of the sensing sending end.
  • the third device is used as an example, or the third device is the sensing response end of the sensing receiving end as an example, but not limited thereto.
  • the feedback indication method may include the following steps:
  • the first device generates a first frame.
  • the first frame may be frame structure data, and the frame structure data includes the first information.
  • the first information may be used to indicate the feedback type of all feedback or the feedback type of partial feedback, such as the feedback type of the first feedback and/or the feedback type of the second feedback.
  • the above-mentioned first feedback and second feedback may be feedbacks generated by one perception process, and may be feedbacks of different levels.
  • the fact that the first feedback and the second feedback are feedbacks of different levels may refer to: the sending timing of the first feedback is different from the sending timing of the second feedback.
  • the first feedback can be the first-level feedback
  • the second feedback can be the second-level feedback; otherwise, if the second feedback is sent before the first feedback, then the first
  • the secondary feedback may be first-level feedback, and the first feedback may be second-level feedback.
  • the fact that the first feedback and the second feedback are feedbacks of different levels may mean that: the sending object of the first feedback is different from the sending object of the second feedback.
  • the first feedback may be the feedback sent by the third device to the second device, or in other words, the feedback sent by the sensing responder of the sensing receiving end to the sensing responding end of the sensing sending end.
  • the first feedback may also be the feedback sent by the third device to the first device, or in other words, the feedback from the sensing response end of the sensing receiving end to the sensing initiating end Send feedback.
  • the first feedback can be considered as first-level feedback.
  • the second feedback may be the feedback sent by the second device to the first device, or in other words, the feedback sent by the sensing responder of the sensing sending end to the sensing initiating end.
  • the second feedback can be considered a second level of feedback.
  • the level of the above feedback is only an example, not a limitation.
  • the first device can continuously or discontinuously send multiple feedbacks to the same device, such as the second device, the multiple feedbacks can be at the same level or at different levels.
  • discontinuous sending refers to receiving feedback from other devices, such as a third device, during the process of sending multiple feedbacks by the first device.
  • the first device respectively sends feedback to multiple devices, such as the second device and the third device, these feedbacks may be at the same level or at different levels.
  • the feedback levels are not limited to two levels, and there may be more levels, such as three levels, four levels and so on.
  • the embodiment of the present application takes the first feedback and the second feedback as an example, but not limited thereto.
  • all the above feedbacks may also include: the third feedback, the fourth feedback, the fifth feedback, etc.
  • the feedback type of the above-mentioned first feedback may include at least one of the following: uncompressed CSI, compressed CSI, NDP, sensory measurement results, the feedback type determined by the sensory initiator, the feedback type determined by the sensory responder, and sent by the sensory
  • the feedback type is determined by the receiving end, or the feedback type is determined by the sensing receiving end.
  • the feedback type of the first feedback may further include: determining the feedback type by any device, where the perception measurement result may be a change amount of CSI, or whether a change degree exceeds a threshold.
  • any device may be at least one of the following: a sensing initiator, a sensing responder, a sensing sending end, or a sensing receiving end.
  • the first device can flexibly determine the feedback type of the first feedback according to actual needs. For example, if communication efficiency needs to be improved, the first device may determine that the feedback type of the first feedback is compressed CSI, so as to reduce the data size of the first feedback, thereby improving communication efficiency and reducing communication overhead. For another example, if it is necessary to reduce the delay of the sensing measurement, the first device may determine that the feedback type of the first feedback is NDP, so that the first device can determine the sensing measurement result by itself according to the NDP, thereby avoiding other devices, such as the sensing response end, The sensing sending end or the sensing receiving end determines the time delay caused by the sensing measurement result, so as to improve measurement efficiency.
  • the feedback type of the first feedback is compressed CSI, so as to reduce the data size of the first feedback, thereby improving communication efficiency and reducing communication overhead.
  • the first device may determine that the feedback type of the first feedback is NDP, so that the first device can determine the sensing measurement result by itself according to the NDP, thereby
  • the first device may determine that the feedback type is a perception measurement result, so that the first device can receive perception measurement results from other devices, so that the first device does not need to calculate the perception measurement result by itself , so as to reduce the computing load of the first device.
  • the first device may determine that the feedback type of the first feedback is determined by other devices, so that the first feedback can meet the business needs of other devices, To improve the reliability and stability of the business.
  • the feedback type of the above-mentioned second feedback may include at least one of the following: uncompressed CSI, compressed CSI, NDP, sensory measurement results, the feedback type determined by the sensory initiator, the feedback type determined by the sensory responder, and sent by the sensory The feedback type is determined by the receiving end, or the feedback type is determined by the sensing receiving end.
  • the feedback type of the second feedback may also include: determining the feedback type by any device, wherein any device may also be at least one of the following: a sensing initiator, a sensing response end, a sensing sending end, or a sensing receiving end end.
  • the first device may also flexibly determine the feedback type of the second feedback according to actual needs. For example, if communication efficiency needs to be improved, the first device may determine that the feedback type of the second feedback is compressed CSI, so as to reduce the data size of the second feedback, thereby improving communication efficiency and reducing communication overhead. For another example, if it is necessary to reduce the delay of the perception measurement, the first device may determine that the feedback type of the second feedback is NDP, so that the first device can determine the perception measurement result by itself according to the NDP, thereby avoiding problems caused by other devices determining the perception measurement result. delay to improve measurement efficiency.
  • the first device may determine that the feedback type of the second feedback is a sensory measurement result, so that the first device can receive sensory measurement results from other devices, so that the first device does not need to The perception measurement result is calculated to reduce the computing load of the first device.
  • the first device may determine that the feedback type of the second feedback is determined by other devices, so that the second feedback can meet the business needs of other devices, To improve the reliability and stability of the business.
  • the above-mentioned indication manner of the first information may specifically be any of the following manners:
  • the first information is only used to indicate that the feedback type of the first feedback includes at least one of the following: uncompressed CSI, compressed CSI, NDP, or perception measurement results (hereinafter referred to as "the specific feedback type of the first feedback” ), which is only used to indicate that the feedback type of the second feedback includes at least one of the following: uncompressed CSI, compressed CSI, NDP, or perceptual measurement results (hereinafter referred to as "the specific feedback type of the second feedback”), or to indicate the specific feedback type of the first feedback and the specific feedback type of the second device.
  • the first information is only used to indicate that the feedback type of the first feedback is the feedback type determined by the sensing sender, that is, the feedback type of the first feedback is determined by the second device, and is only used to indicate that the feedback type of the second feedback is by
  • the sensing sending end determines the feedback type, that is, the feedback type of the second feedback is determined by the second device, or both the feedback type used to indicate the first feedback and the feedback type of the second feedback are determined by the second device.
  • the first information is only used to indicate that the feedback of the first feedback is the feedback type determined by the sensing receiver, that is, the feedback type of the first feedback is determined by the third device, and it is only used to indicate that the feedback type of the second feedback is the feedback type determined by the sensing end.
  • the receiving end determines the feedback type, that is, the feedback type of the second feedback is determined by the third device, or both the feedback type used to indicate the first feedback and the feedback type of the second feedback are determined by the third device.
  • the first information is used to indicate that the feedback type of the first feedback is determined by the second device, and the feedback type of the second feedback is determined by the third device.
  • the first information is used to indicate that the feedback type of the second feedback is determined by the second device, and the feedback type of the first feedback is determined by the third device.
  • the first information is used to indicate a specific feedback type of the first feedback, and the feedback type of the second feedback is determined by the second device.
  • the first information is used to indicate a specific feedback type of the second feedback, and the feedback type of the first feedback is determined by the second device.
  • the first information is used to indicate a specific feedback type of the first feedback, and the feedback type of the second feedback is determined by the third device.
  • the first information is used to indicate a specific feedback type of the second feedback, and the feedback type of the first feedback is determined by the third device.
  • the first information is used to indicate the specific feedback type of the first feedback
  • the feedback type of the second feedback is that the feedback type is determined by any device in the sensing response end, the sensing sending end, and the sensing receiving end, that is, the second The feedback type of the feedback is determined by any of the second device and the third device.
  • the first information is used to indicate that the feedback type of the first feedback is determined by the second device, and the feedback type of the second feedback is determined by any device among the second device and the third device.
  • the first information is used to indicate that the feedback type of the first feedback is determined by the third device, and the feedback type of the second feedback is determined by any device among the second device and the third device.
  • the first information is used to indicate the specific feedback type of the second feedback, and the feedback type of the first feedback is that the feedback type is determined by any device in the sensing response end, sensing sending end, and sensing receiving end, that is, the first The feedback type of the feedback is determined by any of the second device and the third device.
  • the first information is used to indicate that the feedback type of the second feedback is determined by the second device, and the feedback type of the first feedback is determined by any device among the second device and the third device.
  • the first information is only used to indicate that the feedback type of the first feedback is determined by any device in the second device and the third device, and is only used to indicate that the feedback type of the second feedback is determined by any of the second device and the third device Any device determines, or the feedback type used to indicate the first feedback is determined by any of the second device and the third device, and the feedback type of the second feedback is determined by any of the second device and the third device.
  • the first device can be based on one or more of the following: the state of the first device, such as load, packet loss rate, etc., the state of the second device, the state of the third device, the service requirements of the first device, the second The service requirements of the device or the service requirements of the third device determine the above-mentioned multiple indication manners of the first information, which is not limited. Moreover, for different application scenarios, the indication manner of the first information may also be different. For example, if the business of the first device requires a specific feedback type, the first information may indicate the specific feedback type according to business requirements, so as to meet the business requirements of the first device and ensure the service reliability of the first device. For another example, if the service of the first device does not require the specific feedback type of feedback, the first information may instruct other devices to determine the feedback type so that the feedback can meet the service requirements of other devices and ensure the service reliability of other devices.
  • the second feedback type may be determined by default, such as predefined or preconfigured by the protocol, or the feedback type of the second feedback may be determined by other devices, such as the second device or the third device.
  • the second device or the third device may send information to indicate the specific feedback type of the second feedback, or indicate that the feedback type of the second feedback is determined by the second device or the third device.
  • S603 related introduction please refer to the following S603 related introduction.
  • the feedback type of the first feedback may be determined by default, such as The protocol is predefined or preconfigured, or the feedback type of the first feedback may be determined by other devices, such as the second device or the third device.
  • the second device or the third device may send information to indicate that the information can be used to indicate the specific feedback type of the first feedback, or indicate that the feedback type of the first feedback is determined by the second device or the third device, and the specific implementation may be Refer to the related introduction in the following S603.
  • the first information only indicates the specific feedback type of part of all the feedback, or only indicates that the feedback type of part of all the feedback is determined by other devices, then the remaining feedback in all the feedback, that is, the first information does not indicate
  • the feedback type can be determined by default or determined by other devices.
  • the first information is used to indicate that the feedback type of the first feedback is determined by any device in the second device or the third device, and it can be understood that the first information does not indicate the type of the first feedback Feedback type, so as in mode 1-mode 3, the first information is only used to indicate the feedback type of the second feedback, which has the same indication effect, that is, the feedback type indicating the first feedback can be determined by default, or by other devices Sure.
  • the first information is used to indicate that the feedback type of the second feedback is determined by any device in the second device or the third device.
  • the first information does not indicate the feedback of the second feedback Type, so as in mode 1-mode 3, the first information is only used to indicate the feedback type of the first feedback, which has the same indication effect, that is, the feedback type indicating the second feedback can be determined by default or determined by other devices .
  • the first information is only used to indicate the feedback type of the first feedback, or only used to indicate the feedback type of the second feedback, compared with the feedback types of all feedbacks in mode 10-mode 15
  • the indication method can reduce the indication content carried in the first information, thereby reducing the data size of the first information, further reducing communication overhead, and improving communication efficiency.
  • the first information may indicate that the feedback type of the first feedback includes at least one of the following: uncompressed CSI, compressed CSI, NDP, or sensory measurement results, that is, the specific feedback of the first feedback type, and/or, the feedback type of the first feedback includes at least one of the following: the feedback type is determined by the sensing initiator, the feedback type is determined by the sensing responder, the feedback type is determined by the sensing sending end, the feedback type is determined by the sensing receiving end, Or the feedback type is determined by other devices, that is, determined by the second device, the third device, or any device in the second device and the third device.
  • the first information may indicate that the feedback type of the second feedback includes at least one of the following: uncompressed CSI, compressed CSI, NDP, or sensory measurement results, that is, the specific The feedback type, and/or, the feedback type of the second feedback includes at least one of the following: the feedback type is determined by the sensing initiator, the feedback type is determined by the sensing responder, the feedback type is determined by the sensing sending end, and the feedback type is determined by the sensing receiving end , or the feedback type is determined by other devices, that is, determined by the second device, the third device, or any device in the second device and the third device. Further, the following uses the first feedback and the second feedback as examples to introduce the indication principle of the first information.
  • the first information may include one or more fields, and each field may be used to indicate a feedback type corresponding to one feedback among all the feedbacks.
  • the first information includes: a first field and/or a second field.
  • the first field may indicate the feedback type of the first feedback.
  • the second field may indicate the feedback type of the second feedback. In this way, if the first device only needs to indicate the first feedback, it may only send the first field without sending the second field. Similarly, if the first device only needs to indicate the second feedback, it may only send the second field instead of the first field. In this way, sending redundant information can be avoided, thereby reducing communication overhead and improving communication efficiency.
  • the first field is used as an example for introduction below, and the specific implementation of the second field may refer to the relevant introduction of the first field below.
  • the first field includes a plurality of bits, such as 3-9 bits, etc.
  • the first field can indicate the feedback type of the first feedback through an index composed of a plurality of bits, or through a bit of a plurality of bits
  • the graph, or the bit indicating the feedback type of the first feedback, will be introduced separately below.
  • indexes may indicate different feedback types of the first feedback, as shown in Table 1 below, for example.
  • the above index may include 5 bits to indicate various feedback types shown in Table 1 above.
  • the first device may traverse the table 1 to determine the index corresponding to the feedback type that the first device wants to indicate, so as to generate first information including the index to indicate the feedback type that the first device wants to indicate.
  • the first device For example, if the first device wants to indicate that the feedback type of the first feedback is uncompressed CSI, it traverses Table 1 to generate first information carrying an index of 00000, which is used to indicate that the feedback type of the first feedback is uncompressed CSI .
  • the first device For another example, if the first device wants to indicate that the feedback type of the first feedback includes uncompressed CSI and perception measurement results, it traverses Table 1 to generate the first information carrying the index 00110 to indicate the feedback type of the first feedback Includes uncompressed CSI and perception measurements.
  • the first device wants to indicate that the feedback type of the first feedback is determined by the sensing sender (the sensing sender is the second device), it traverses Table 1 to generate the first information carrying the index 10001 to indicate the first feedback A feedback type of the feedback is determined by the sensor sending end. It can be seen that in this case, since both the second device and the third device are sensing responders, or there are multiple sensing responders, the first device cannot use the second device as the sensing responder to determine the index, and needs to use The second device determines an index for the sensing sender, so as to avoid false determination and false indication.
  • each index in Table 1 may also indicate the respective feedback types of multiple feedbacks of different levels, such as indicating the first-level feedback, such as the feedback type of the first feedback being uncompressed CSI, and indicating the second-level feedback, such as The feedback type of the second feedback is compressed CSI.
  • the order of values of the indexes in Table 1 that is, the order of binary values from small to large, is only an example and is not intended as a limitation.
  • each index in Table 1 may also take values in descending binary order, or take values at random, which is not limited.
  • the first information may further include a plurality of indexes, and each index is used to indicate a feedback type, such as the feedback type of the first feedback and/or the feedback type of the second feedback, which may be determined by the Nth device corresponding to the index, N is a positive integer.
  • the Nth device may be the Nth device after the device corresponding to the index, or the Nth hop device.
  • the hop relationship of the link is first device ⁇ second device ⁇ third device, if the feedback type indicating the first feedback is determined by the third device, the first information sent by the first device to the second device, the second The information may include a first index and a second index, wherein the first index corresponds to the first device, the first index is used to indicate that the feedback type of the first feedback is determined by the second device (third device), and the second index Corresponding to the second device, the second index is used to indicate that the feedback type of the first feedback is determined by the first device (the third device).
  • the first information sent by the second device to the third device may only include the second index to indicate that the feedback type of the first feedback is determined by the first device .
  • the feedback type is determined by the perception initiator 0101
  • the type of feedback is determined by the sensory responder 0110
  • the feedback type is determined by the sensing sender 0111
  • the feedback type is determined by the sensing receiver 1000 Determining Feedback Type / Uncertain Feedback Type by Any Device
  • the index in Table 2 is 4 bits. Compared with the index in Table 1 which is 5 bits, the data length of the index in Table 2 is shorter and the data volume is smaller, so that the communication overhead can be reduced to improve communication efficiency.
  • the data length of the index in Table 3 is further shortened to 3 bits, so that the communication overhead can be further reduced and the communication efficiency can be further improved.
  • the first field includes a plurality of bits, and each bit may indicate a feedback type, for example, as shown in Table 4 below.
  • the bitmap in Table 4 may include 9 bits, and the 9 bits are in order from left to right, and each bit may be used to indicate a feedback type.
  • the first bit may be used to indicate whether the feedback type of the first feedback includes uncompressed CSI, 1 indicates that uncompressed CSI is included, and 0 indicates that uncompressed CSI is not included.
  • the second bit may be used to indicate whether the feedback type of the first feedback includes compressed CSI, where 1 indicates that compressed CSI is included, and 0 indicates that compressed CSI is not included.
  • the third bit may be used to indicate whether the feedback type of the first feedback includes NDP, where 1 indicates that NDP is included, and 0 indicates that NDP is not included.
  • the ninth bit can be used to indicate whether the first information does not indicate the feedback type, 1 indicates that the first information does not indicate the first feedback feedback type, and 0 indicates that the first information indicates the first feedback feedback type.
  • the first device may traverse Table 4 to determine the bitmap corresponding to the feedback type that the first device wants to indicate, so as to generate the first information carrying the bitmap to indicate the feedback type that the first device wants to indicate .
  • the first device For example, if the first device wants to indicate that the feedback type of the first feedback is uncompressed CSI, it traverses Table 1 to generate the first information carrying a bitmap 100000000 to indicate that the feedback type of the first feedback is uncompressed CSI.
  • the first device For another example, if the first device wants to indicate that the feedback type of the first feedback includes uncompressed CSI and perceptual measurement results, it traverses Table 1 to generate the first information carrying bitmap 100100000 to indicate the feedback of the first feedback Types include uncompressed CSI and perceptual measurements.
  • the first device wants to indicate that the feedback type of the first feedback is determined by the sensing sender (the second device is the sensing sender), it traverses Table 1 to generate the first information carrying the bitmap 000000100 to indicate The feedback type of the first feedback is a feedback type determined by the sensing sending end. It can be seen that in this case, since both the second device and the third device are sensing responders, the first device cannot use the second device as the sensing responder to determine the bitmap, and needs to use the second device as the sensing sender to determine Bitmaps to avoid misidentification and misindication.
  • the feedback type is determined by the perception initiator 000001000
  • the type of feedback is determined by the sensory responder 000000100
  • the feedback type is determined by the sensing sender 000000010
  • the feedback type is determined by the sensing receiver 000000001 Determining Feedback Type / Uncertain Feedback Type by Any Device
  • Table 5 only includes 9 bitmaps, so that the first device can traverse Table 5 to determine the corresponding bitmap more quickly, thereby improving processing efficiency.
  • the feedback type is determined by the perception initiator
  • bitmap in Table 6 is 5 bits, compared with the bitmap in Table 5 is 9 bits, the data length of the bitmap in Table 6 is shorter, and the data volume is smaller, so that the communication overhead can be reduced , improve communication efficiency.
  • the first feedback can be the feedback sent by the third device to the second device
  • the second feedback can be the feedback sent by the second device to the first device
  • the second feedback can be determined based on the first feedback. That is to say, the second feedback is determined on the basis of the first feedback. Therefore, the feedback type of the first feedback and the feedback type of the second feedback need to satisfy the determination logic between the first feedback and the second feedback. For example, on the basis of determining that the logic is NDP ⁇ CSI ⁇ perception measurement results, if the feedback type of the first feedback is NDP, the feedback type of the second feedback may include one or more of the following: NDP, CSI, such as compressed CSI or uncompressed CSI, or measurements. However, if the feedback type of the first feedback is CSI, the feedback type of the second feedback may include one or more of the following: CSI or measurement results, but not including NDP.
  • the first device sends the first frame, and the second device receives the first frame.
  • the first frame includes first information
  • the first information may be carried in one or more of the following: signaling in the perception establishment phase, such as a perception establishment request message, a perception establishment reception message, or signaling in the perception measurement phase , such as sensing request (sensing request) messages, to achieve signaling multiplexing, thereby reducing communication overhead and improving communication efficiency.
  • the first device can send the first frame, so that the second device can receive the first frame.
  • the second device can determine the feedback type of the first feedback and/or the feedback type of the second feedback according to the first information in the first frame.
  • the first frame may further include: mode indication information.
  • the mode indication information may be used to indicate that the first information indicates any one of the following: a feedback type of the first feedback, a feedback type of the second feedback, or a feedback type of the first feedback and a feedback type of the second feedback.
  • the receiving device such as the second device, can accurately determine the indication content of the first information according to the mode indication information, so as to avoid false feedback caused by incorrectly determining the indication content of the first information, thereby improving the stability of measurement.
  • the feedback indication method may further include: Step 1, the second device sends the second information and/or the second information to the third device, and the third device receives the second information from the second The first information and/or the second information of the device.
  • the second information may be independently indicated, that is, the content indicated by the second information and the content indicated by the first information are independent of each other, and may be the same or different.
  • the second information may also be indicated together with the first information, for example, the second information may be used to indicate the feedback type of other feedback, or indicate that the feedback type of other feedback is determined by other devices.
  • other feedback may be feedback not indicated by the first information in all feedbacks, and/or the first information indicates feedback determined by other devices.
  • the first information does not indicate the feedback type of the first feedback, or indicating the feedback type of the first feedback includes: determining the feedback type by the sensing sending end (the second device), then
  • the second information may indicate any of the following: the specific feedback type of the first feedback (including at least one of the following: uncompressed CSI, compressed CSI, NDP, or sensory measurement results), the feedback type of the first feedback received by the sensor
  • the end determines the feedback type, that is, the feedback type of the first feedback is determined by the third device, or the sensing sending end does not determine the feedback type of the first feedback (the feedback type of the first feedback is determined by any device in other devices).
  • the first information does not indicate the feedback type of the first feedback, or indicates the feedback type of the second feedback includes: the feedback type is determined by the sensing sending end (the second device), then the first information may also indicate any of the following: Item: The feedback type of the second feedback is determined by the sensing receiving end, that is, the feedback type of the second feedback is determined by the third device, or the sensing sending end (the second device) is not sure about the feedback type of the second feedback (the second feedback The feedback type for is determined by any of the other devices).
  • the first information and/or the second information sent by the second device may carry at least one of the following: signaling in the sensing measurement phase, such as NDPA or NDP, or signaling in the sensing reporting phase, such as a feedback request message, In this way, signaling multiplexing is realized to reduce communication overhead and improve communication efficiency.
  • the second device can, according to the various indication ways in the above-mentioned way 1-way 15, The determination to send the first information and/or the second information will be described in detail below.
  • the feedback type of the second feedback can be determined according to the protocol pre-definition, such as determined by the sensing sender, that is, the second device.
  • the second device may forward the first information (including the above-mentioned first field and the second field) to the third device according to the first information, or send only the first field without sending the second field, for Indicates the feedback type of the first feedback.
  • the second device may determine the specific feedback type of the second feedback according to the state of the second device and/or the service requirements of the second device, or the feedback type of the second feedback is the feedback type determined by the sensing receiving end, That is, the feedback type of the second feedback is determined by the third device, so that the second information is sent to the third device to indicate that the feedback type of the second feedback is determined by the third device. That is, in this case, the second device may send the first information and the second information to the third device. Wherein, the first information and the second information may be packaged and sent, or sent separately, which is not limited.
  • the first feedback type can be determined according to the protocol predefined, such as determined by the second device.
  • the second device may determine the specific feedback type of the first feedback according to the state of the second device and/or the service requirements of the second device, or the feedback type of the first feedback is determined by the third device, so as to provide the third device with The second information is sent to indicate a specific feedback type of the first feedback, or the feedback type of the first feedback is determined by the third device.
  • the first information is used to indicate a specific feedback type of the first feedback and a specific feedback type of the second device.
  • the second device may forward the first information to the third device according to the first information, or send only the first field without sending the second field, so as to indicate the specific feedback type of the first feedback.
  • the first information is only used to indicate that the feedback type of the first feedback is determined by the second device.
  • the second device may determine the specific feedback type of the first feedback according to the first information, or the feedback type of the first feedback is determined by the third device, so as to send the second information to the third device to indicate that the first feedback
  • the specific feedback type of the first feedback, or the feedback type of the first feedback is determined by the third device.
  • the second device may send the second information to the third device to indicate the feedback type of the second feedback Determined by the third device.
  • the second information may be used to indicate the specific feedback type of the first feedback, or the feedback type of the first feedback is determined by the third device, and optionally, may also be used to indicate the specific feedback type of the second feedback.
  • the feedback type is determined by the third device.
  • the first information is only used to indicate that the feedback type of the second feedback is determined by the second device.
  • the second device may determine the specific feedback type of the second feedback according to the first information, or the feedback type of the second feedback may be determined by the third device, so as to send the second information to the third device to indicate that the second The feedback type of the second feedback is determined by the third device.
  • the second device may send the second information to the third device to indicate the specific feedback of the first feedback The type of feedback, or the feedback type of the first feedback is determined by the third device.
  • the second information may be used to indicate that the feedback type of the second feedback is determined by the third device, and optionally, may also be used to indicate the specific feedback type of the first feedback, or the feedback type of the first feedback The feedback type is determined by the third device.
  • the first information is used to indicate that both the feedback type of the first feedback and the feedback type of the second feedback are determined by the second device.
  • the second device may determine the specific feedback type of the first feedback according to the first information, or the feedback type of the first feedback may be determined by the third device.
  • the second device may also determine a specific feedback type of the second feedback according to the first information, or the feedback type of the second feedback may be determined by the third device. Therefore, the second device may send the second information to the third device, to indicate the specific feedback type of the first feedback, or the feedback type of the first feedback is determined by the third device, and optionally, to indicate the second feedback The type of feedback is determined by the third device.
  • the first information is only used to indicate that the feedback type of the first feedback is determined by the third device.
  • the second device may forward the first information to the third device according to the first information, or only send the first field without sending the second field to indicate that the feedback type of the first feedback is received by the third device Sure.
  • the second device may send the second information to the third device to indicate the feedback type of the second feedback Determined by the third device.
  • the first information is only used to indicate that the feedback type of the second feedback is determined by the third device.
  • the second device may forward the first information to the third device according to the first information, or only send the second field without sending the first field, to indicate that the feedback type of the second feedback is received by the third device Sure.
  • the second device may send the second information to the third device to indicate the specific feedback of the first feedback The type of feedback, or the feedback type of the first feedback is determined by the third device.
  • the first information is used to indicate that both the feedback type of the first feedback and the feedback type of the second feedback are determined by the third device.
  • the second device may forward the first information to the third device according to the first information, which is used to indicate that both the feedback type of the first feedback and the feedback type of the second feedback are determined by the third device.
  • the first information is used to indicate that the feedback type of the first feedback is determined by the second device, and the feedback type of the second feedback is determined by the third device.
  • the second device may determine the specific feedback type of the first feedback according to the first information, or the feedback type of the first feedback may be determined by the third device, thereby sending second information to the third device to indicate that the first feedback
  • the specific feedback type of the feedback, or the feedback type of the first feedback is determined by the third device.
  • the second device may forward the first information to the third device according to the first information, or only send the second field without sending the first field, to indicate that the feedback type of the second feedback is determined by the third device .
  • the first information is used to indicate that the feedback type of the second feedback is determined by the second device, and the feedback type of the first feedback is determined by the third device.
  • the second device may determine the specific feedback type of the second feedback according to the first information, or the feedback type of the second feedback may be determined by the third device, so as to send the second information to the third device to indicate that the second The feedback type of the second feedback is determined by the third device.
  • the second device may forward the first information to the third device according to the first information, or send only the first field without sending the second field, to indicate that the feedback type of the first feedback is determined by the third device .
  • the first information is used to indicate a specific feedback type of the first feedback
  • the feedback type of the second feedback is determined by the second device.
  • the second device may forward the first information to the third device according to the first information, or send only the first field without sending the second field, so as to indicate a specific feedback type of the first feedback.
  • the second device may determine the specific feedback type of the second feedback according to the first information, or the feedback type of the second feedback is determined by the third device, so as to send the second information to the third device to indicate that the second The feedback type of the feedback is determined by the third device.
  • the first information is used to indicate a specific feedback type of the second feedback, and the feedback type of the first feedback is determined by the second device.
  • the second device can determine the specific feedback type of the first feedback according to the first information, or the feedback type of the first feedback is determined by the third device, so as to send the second information to the third device to indicate the type of the first feedback
  • the specific feedback type, or the feedback type of the first feedback is determined by the third device.
  • the first information is used to indicate a specific feedback type of the first feedback, and the feedback type of the second feedback is determined by the third device.
  • the second device may forward the first information to the third device according to the first information, which is used to indicate the specific feedback type of the first feedback, and the feedback type of the second feedback is determined by the third device.
  • the first information is used to indicate a specific feedback type of the second feedback, and the feedback type of the first feedback is determined by the third device.
  • the second device may forward the first information to the third device according to the first information, or send only the first field without sending the second field, to indicate that the feedback type of the first feedback is determined by the third device.
  • the first information is used to indicate a specific feedback type of the first feedback
  • the feedback type of the second feedback is determined by any device in the second device and the third device.
  • the second device may forward the first information to the third device according to the first information, or send only the first field without sending the second field, so as to indicate a specific feedback type of the first feedback.
  • the second device may determine the specific feedback type of the second feedback according to the first information, the feedback type of the second feedback is determined by the third device, or the second device does not determine the feedback type of the second feedback.
  • the second device may also send second information to the third device to indicate the type of the second feedback.
  • the feedback type is determined by the third device, or the second device does not determine the feedback type of the second feedback.
  • the first information may be used to indicate that the feedback type of the first feedback is determined by the second device, and the feedback type of the second feedback is determined by any of the second device and the third device.
  • the second device may determine the specific feedback type of the first feedback according to the first information, or the feedback type of the first feedback is determined by the third device, so as to send the second information to the third device to indicate that the first feedback
  • the specific feedback type of the first feedback, or the feedback type of the first feedback is determined by the third device.
  • the second device may send second information to the third device to indicate that the feedback type of the second feedback is determined by the third device , or the second device does not determine the feedback type of the second feedback.
  • the second information may be used to indicate the specific feedback type of the first feedback, or the feedback type of the first feedback is determined by the third device, and optionally, may also be used to indicate the feedback type of the second feedback Determined by the third device, or the second device does not determine the feedback type of the second feedback.
  • the first information is used to indicate that the feedback type of the first feedback is determined by the third device, and the feedback type of the second feedback is determined by any device in the second device and the third device.
  • the second device may forward the first information to the third device according to the first information, or only send the first field without sending the second field to indicate that the feedback type of the first feedback is received by the third device Sure.
  • the second device may send second information to the third device to indicate that the feedback type of the second feedback is determined by the third device , or the second device does not determine the feedback type of the second feedback.
  • the first information is used to indicate a specific feedback type of the second feedback, and the feedback type of the first feedback is determined by any device in the second device and the third device.
  • the second device can determine the specific feedback type of the first feedback according to the first information, the feedback type of the first feedback is determined by the third device, or the second device does not determine the feedback type of the first feedback, so as to provide the third device with
  • the second information is sent to indicate the specific feedback type of the first feedback, the feedback type of the first feedback is determined by the third device, or the second device does not determine the feedback type of the first feedback.
  • the first information is used to indicate that the feedback type of the second feedback is determined by the second device, and the feedback type of the first feedback is determined by any device in the second device and the third device.
  • the second device may determine the specific feedback type of the second feedback according to the first information, or the feedback type of the second feedback may be determined by the third device, so as to send the second information to the third device to indicate that the second The feedback type of the second feedback is determined by the third device.
  • the second device can send the second information to the third device to indicate the specific feedback type of the first feedback, the first feedback
  • the feedback type of the first feedback is determined by the third device, or the second device does not determine the feedback type of the first feedback.
  • the second information may be used to indicate the specific feedback type of the first feedback, the feedback type of the first feedback is determined by the third device, or the second device does not determine the feedback type of the first feedback, optionally , which is also used to indicate that the feedback type of the second feedback is determined by the third device.
  • the first information is only used to indicate that the feedback type of the first feedback is determined by any device among the second device and the third device.
  • the second device can send second information to the third device to indicate the specific feedback type of the first feedback, the first The feedback type of the feedback is determined by the third device, or the second device does not determine the feedback type of the first feedback.
  • the second device may send the second information to the third device to indicate the feedback type of the second feedback Determined by the third device.
  • the second information may be used to indicate the specific feedback type of the first feedback, the feedback type of the first feedback is determined by the third device, or the second device does not determine the feedback type of the first feedback, and may Optionally, it may also be used to indicate that the feedback type of the second feedback is determined by the third device.
  • the first information is only used to indicate that the feedback type of the second feedback is determined by any device among the second device and the third device.
  • the second device can send the second information to the third device to indicate that the feedback type of the second feedback is provided by the third device OK, or the second device is not sure about the feedback type of the second feedback.
  • the second device may send the second information to the third device to indicate the specific feedback of the first feedback The type of feedback, or the feedback type of the first feedback is determined by the third device.
  • the second information may be used to indicate that the feedback type of the second feedback is determined by the third device, or the second device does not determine the feedback type of the second feedback, and optionally, may also be used to indicate The specific feedback type of the first feedback, or the feedback type of the first feedback is determined by the third device.
  • the first information is used to indicate that the feedback type of the first feedback is determined by any of the second device and the third device, and the feedback type of the second feedback is determined by any of the second device and the third device Any device identified.
  • the second device can only send the first field instead of the second field .
  • the second device may only send the second field instead of the first field. In this way, sending redundant information can be avoided, thereby reducing communication overhead and improving communication efficiency.
  • the feedback indication method may further include: step 2, the third device sends third information to the second device, and the second device Third information is received from a third device.
  • the third information may be used to indicate that the feedback type of the second feedback includes at least one of the following: uncompressed CSI, compressed CSI, NDP, or perception measurement results, that is, indicating the specific feedback type of the second feedback, which may be
  • the signaling carried in the sensing report phase, as in the above-mentioned first feedback, is used to realize signaling multiplexing, reduce communication overhead, and improve communication efficiency.
  • the third device may determine the specific feedback type of the second feedback according to the status of the third device and/or the service requirements of the third device, thereby sending the third device to the second device.
  • Information used to indicate the specific feedback type of the second feedback.
  • the third device may also according to the state of the third device, And/or, the service requirement of the third device determines the specific feedback type of the first feedback.
  • the foregoing S601-S602, and the foregoing first application scenario-the third application scenario are examples of interactions among the first device, the second device, and the third device, and are not intended to be limiting.
  • the second device may also generate the first information and send the first information to the first device and the third device.
  • the third device may also generate the first information and send the first information to the second device, so that the second device sends the first information to the first device.
  • the device for performing the method may include: a first device and a second device.
  • the first device may be a sensing initiator that is a sensing receiving end.
  • the second device may be a perception responder that is a perception sender, and there may be one or more.
  • the feedback indication method may include two levels of feedback, one level of feedback is the first feedback sent by the first device to the second device, and the other level of feedback is the second feedback sent by the second device to the first device.
  • the feedback type may be determined in three ways (determining ways 1-3), wherein, determining way 1: the first device determines specific feedback types of the first feedback and the second feedback. Determination mode 2: the first device determines a specific feedback type of the first feedback, and the second device determines a specific feedback type of the second feedback. Determination mode 3: the first device determines the specific feedback type of the second feedback, and the second device determines the specific feedback type of the first feedback.
  • FIG. 9 is a schematic flow diagram II of the feedback indication method in scenario A.
  • the steps of the feedback indication method may include:
  • the first device sends a sensing request message to the second device, and the second device receives the sensing request message from the first device.
  • the sensing request message may include the above-mentioned first information.
  • the first information includes a first field and a second field
  • the first field may be used to indicate the specific feedback type of the first feedback, such as CSI
  • the second field may be used to indicate the specific feedback type of the second feedback, such as
  • the perception request message may also include the above-mentioned mode indication information.
  • the relevant introduction in the above-mentioned first application scenario please refer to the relevant introduction in the above-mentioned first application scenario, which will not be repeated here.
  • the second device sends NDPA.
  • the second device may send NDPA according to the sensing request message, for example, after receiving the sensing request message, send the NDPA after a SIFS.
  • NDPA for the specific implementation of NDPA, reference may be made to the related introduction of the above S202, which will not be repeated here.
  • the second device sends an NDP.
  • the second device may send the NDP after a SIFS.
  • the NDPA and the NDP sent by the second device may or may not carry the first information, which is not limited.
  • the first device sends the first feedback to the second device, and the second device receives the first feedback from the first device.
  • the first device may determine the first feedback, such as CSI, according to the specific feedback type indicated by the first field.
  • the first device since the first device is not only the sensing initiator, but also the sensing receiver, the first device can send the first feedback to the second device, that is, the sensing responder that is the sensing sending end, such as sending After the NDP, the first feedback is sent after one SIFS.
  • the second device sends the second feedback to the first device, and the first device receives the second feedback from the second device.
  • the second device can determine the second feedback, such as the perception measurement result, according to the specific feedback type indicated by the above second field, such as the perception measurement result, and the first feedback, such as the perception measurement result.
  • the second device may send the second feedback to the second device after one SIFS.
  • FIG. 10 is a schematic flow diagram III of the feedback indication method in scenario A.
  • the steps of the feedback indication method may include:
  • the first device sends a sensing request message to the second device, and the second device receives the sensing request message from the first device.
  • the perception request message may include the first field in the first information above, and the first field may be used to indicate the specific feedback type of the first feedback, such as CSI, for specific implementation, please refer to the relevant introduction in the above S601-S602 , which will not be repeated here.
  • the perception request message may also include the above-mentioned mode indication information.
  • the relevant introduction in the above-mentioned first application scenario please refer to the relevant introduction in the above-mentioned first application scenario, which will not be repeated here.
  • the second device sends NDPA.
  • the second device sends an NDP.
  • the first device sends the first feedback to the second device, and the second device receives the first feedback from the first device.
  • the first device may determine the first feedback, such as CSI, according to the specific feedback type indicated by the first field, so as to send the first feedback to the second device after one SIFS after sending the NDP.
  • the first feedback such as CSI
  • the first feedback may include the second field in the above-mentioned first information, which is used to indicate that the feedback type of the second feedback is determined by the second device.
  • the second field in the above-mentioned first information, which is used to indicate that the feedback type of the second feedback is determined by the second device.
  • the first feedback and the second feedback can be indicated separately, such as indicating the first feedback through the perception request message, and indicating the second feedback through the first feedback, so as to avoid packet loss caused by a single sent data packet being too large, so that Improve communication reliability.
  • the first feedback and the second feedback may also combine indications, for example, the perception request message may also include the first field and the second field.
  • the second device determines a specific feedback type of the second feedback according to the first information.
  • the second device may determine the specific feedback type of the second feedback according to the second field in the first information, such as the perception measurement result, for specific implementation, please refer to the relevant introduction in the above-mentioned second application scenario, which will not be repeated here. repeat.
  • the second device may determine the second feedback, that is, the perception measurement result, according to the received first feedback, such as CSI, and the specific feedback type of the second feedback.
  • the second device sends the second feedback to the first device, and the first device receives the feedback from the second device.
  • the second device may send the second feedback to the second device after one SIFS.
  • FIG. 11 is a schematic flow diagram IV of the feedback indication method in scenario A.
  • the steps of the feedback indication method may include:
  • the first device sends a sensing request message to the second device, and the second device receives the sensing request message from the first device.
  • the sensing request message may include the first field and the second field in the above first information.
  • the first field can be used to indicate that the feedback type of the first feedback is determined by the second device, and the second field can be used to indicate the specific feedback type of the second feedback, such as the perception measurement result, and the specific implementation can refer to the above S601 -Relevant introductions in S602 will not be repeated here.
  • the perception request message may also include the above-mentioned mode indication information.
  • the relevant introduction in the above-mentioned first application scenario please refer to the relevant introduction in the above-mentioned first application scenario, which will not be repeated here.
  • the second device determines a specific feedback type of the first feedback according to the first information.
  • the second device can determine the specific feedback type of the first feedback according to the first field in the first information, such as CSI, and the specific implementation can refer to the relevant introduction in the second application scenario above. , which will not be repeated here.
  • the second device sends NDPA.
  • the second device sends an NDP.
  • the above-mentioned second information may be carried in the NDPA sent by the second device to indicate the specific feedback type of the first feedback, but it is not limited, for example, it may also be carried in the NDP.
  • S1102 may be executed before S1104.
  • the first device sends the first feedback to the second device, and the second device receives the first feedback from the first device.
  • the first device may determine the first feedback, such as CSI, according to the specific feedback type indicated by the second information, so that after sending the NDP, the first device sends the first feedback after one SIFS.
  • the first feedback such as CSI
  • the second device sends the second feedback to the first device, and the first device receives the feedback from the second device.
  • the second device can determine the second feedback, that is, the perception measurement result, according to the specific feedback type indicated by the second field above, such as the perception measurement result, and the first feedback, such as CSI.
  • the second device may send the second feedback after one SIFS.
  • the second device determines the specific feedback type of the first feedback and the specific feedback type of the second feedback.
  • the second device determines the specific feedback type of the first feedback and the specific feedback type of the second feedback.
  • FIG. 12 is a schematic diagram of an architecture of scenario B
  • FIG. 13 is a schematic flowchart of a feedback indication method in scenario B
  • the device for executing the method may include: a first device, a second device, and a third device.
  • the second device is connected with the first device and the third device, and, optionally, the third device may be connected with the first device.
  • the first device may be the sensing initiator
  • the second device may be the sensing responder as the sensing sending end
  • the third device may be the sensing responding end as the sensing receiving end
  • both the second device and the third device may be one or more .
  • the feedback indication method may include two levels of feedback, one level of feedback is the first feedback sent by the third device to the first device or the second device, and the other level of feedback is the second feedback sent by the second device to the first device .
  • determination manners 4-6 there may be three determination manners (determination manners 4-6), wherein, determination manner 4: the first device determines the specific feedback type of the first feedback and the specific feedback type of the second feedback.
  • Determination mode 5 the first device determines a specific feedback type of the first feedback, and the second device determines a specific feedback type of the second feedback.
  • Determining manner 6 the first device determines a specific feedback type of the second feedback, and the second device determines a specific feedback type of the first feedback.
  • the processes corresponding to the above-mentioned determination methods 4-6 are specifically introduced below.
  • FIG. 14 is a schematic flow diagram II of the feedback indication method in scenario B.
  • the steps of the feedback indication method may include:
  • the first device sends a sensing request message to the second device, and the second device receives the sensing request message from the first device.
  • the sensing request message may include the above-mentioned first information.
  • the first information may include a first field and a second field, the first field may be used to indicate the specific feedback type of the first feedback, such as CSI, and the second field may be used to indicate the specific feedback type of the second feedback, such as
  • CSI specific feedback type of the first feedback
  • the second field may be used to indicate the specific feedback type of the second feedback, such as
  • the perception request message may also include the above-mentioned mode indication information.
  • the relevant introduction in the above-mentioned first application scenario please refer to the relevant introduction in the above-mentioned first application scenario, which will not be repeated here.
  • the second device sends NDPA.
  • the second device may send NDPA after a SIFS according to the sensing request message.
  • NDPA NDPA after a SIFS according to the sensing request message.
  • the second device sends an NDP.
  • the second device may send the NDP after a SIFS.
  • the second device sends a feedback request message.
  • the second device may send a feedback request message after a SIFS.
  • a feedback request message after sending the NDP, the second device may send a feedback request message after a SIFS.
  • the feedback request message refer to the related introduction in S205 above.
  • the third device sends the first feedback to the second device, and the third device receives the first feedback from the second device.
  • the third device sends the first feedback to the first device, and the third device receives the first feedback from the first device.
  • the first device may determine the first feedback, such as CSI, according to the specific feedback type indicated by the first field.
  • S1405 and S1406 are optional steps. Specifically, as shown in Figure 13, on the one hand, if the third device is not directly connected to the first device, the third device can send the first feedback to the second device, for example, after receiving the NDP, send it after a SIFS The first feedback is to execute S1405. Or, on the other hand, if the third device is directly connected to the first device, the third device may send the first feedback to the first device, that is, perform S1406.
  • the second device sends the second feedback to the first device, and the first device receives the second feedback from the second device.
  • the second device can determine the second feedback, that is, the perception measurement result according to the specific feedback type indicated by the second field above, such as the perception measurement result, and the first feedback, such as CSI.
  • the second device may send the second feedback after one SIFS.
  • FIG. 15 is a schematic flow diagram of the third feedback indication method in scenario B.
  • the steps of the feedback indication method may include:
  • the first device sends a sensing request message to the second device, and the second device receives the sensing request message from the first device.
  • the sensing request message may include the first field and the second field in the above-mentioned first information.
  • the first field can be used to indicate the specific feedback type of the first feedback, such as CSI
  • the second field can be used to indicate that the feedback type of the second feedback is determined by the second device, and the specific implementation can refer to the above S601-S602 The relevant introductions in , will not be repeated here.
  • the perception request message may also include the above-mentioned mode indication information.
  • the relevant introduction in the above-mentioned first application scenario please refer to the relevant introduction in the above-mentioned first application scenario, which will not be repeated here.
  • the second device sends NDPA.
  • the second device sends an NDP.
  • the second device sends a feedback request message.
  • the above-mentioned first information (including the first field and the second field), or only the first field in the first information, is carried in the NDPA sent by the second device to indicate the specific feedback type of the first feedback, but It is not limited, for example, it may also be carried in the NDP and the feedback request message sent by the second device.
  • the third device sends the first feedback to the second device, and the third device receives the first feedback from the second device.
  • the third device sends the first feedback to the first device, and the third device receives the first feedback from the first device.
  • the first device may determine the first feedback, such as CSI, according to the specific feedback type indicated by the first field.
  • S1505 and S1506 are optional steps.
  • the second device determines a specific feedback type of the second feedback according to the first information.
  • the second device may determine the specific feedback type of the second feedback according to the second field in the first information, such as the perception measurement result, for specific implementation, please refer to the relevant introduction in the above-mentioned second application scenario, which will not be repeated here. repeat.
  • the second device may determine the second feedback, that is, the perception measurement result, according to the received first feedback, such as CSI, and the specific feedback type of the second feedback.
  • the second device sends the second feedback to the first device, and the first device receives the second feedback from the second device.
  • FIG. 16 is a schematic flow diagram IV of the feedback indication method in scenario B.
  • the steps of the feedback indication method may include:
  • the first device sends a sensing request message to the second device, and the second device receives the sensing request message from the first device.
  • the sensing request message may include the first field and the second field in the above-mentioned first information.
  • the first field can be used to indicate that the feedback type of the first feedback is determined by the second device
  • the second field can be used to indicate the specific feedback type of the second feedback, such as the perception measurement result, and the specific implementation can refer to the above S601 -Relevant introductions in S602 will not be repeated here.
  • the perception request message may also include the above-mentioned mode indication information.
  • the relevant introduction in the above-mentioned first application scenario please refer to the relevant introduction in the above-mentioned first application scenario, which will not be repeated here.
  • the second device determines a specific feedback type of the first feedback according to the first information.
  • the second device can determine the specific feedback type of the first feedback according to the first field in the first information, such as CSI, and the specific implementation can refer to the relevant introduction in the second application scenario above. , which will not be repeated here.
  • the second device sends NDPA.
  • the second device sends an NDP.
  • the second device sends a feedback request message.
  • the above-mentioned second information may be carried in the NDPA sent by the second device to indicate the specific feedback type of the first feedback, but not limited, for example, it may also be carried in the NDP and the feedback request message sent by the second device. That is to say, S1602 may be executed before S1605.
  • the third device sends the first feedback to the second device, and the third device receives the first feedback from the second device.
  • the third device sends the first feedback to the first device, and the third device receives the first feedback from the first device.
  • the first device may determine the first feedback according to the specific feedback type indicated by the first field, such as CSI.
  • the specific feedback type indicated by the first field such as CSI.
  • S1606 and S1607 are optional steps.
  • the second device sends the second feedback to the first device, and the first device receives the second feedback from the second device.
  • the second device determines the specific feedback type of the first feedback and the specific feedback type of the second feedback
  • the second The device determines the specific feedback type of the first feedback
  • the third device determines the specific feedback type of the second feedback
  • FIG. 17 is a schematic diagram of the architecture of scenario C
  • FIG. 18 is a schematic flowchart of a feedback indication method in scenario C.
  • the device for performing the method may include: a first device, a second device, and a third device.
  • the second device is connected with the first device and the third device
  • the first device may be a sensing initiator
  • the second device may be a sensing responding end being a sensing receiving end
  • the third device may be a sensing responding end being a sensing sending end
  • both the second device and the third device may be one or more.
  • the feedback indication method may include three levels of feedback, the first level of feedback is the first feedback sent by the second device to the third device, the second level of feedback is the second feedback sent by the third device to the second device, and the third level of feedback is sent by the third device to the second device.
  • the level feedback is third feedback sent by the second device to the first device.
  • determination methods 7-10 there are four determination methods (determination methods 7-10), wherein, determination method 7: the first device determines the specific feedback type of the first feedback, the specific feedback type of the second feedback, and the specific feedback type of the third feedback. specific feedback type.
  • Determination mode 8 the first device determines the specific feedback type of the first feedback and the specific feedback type of the second feedback, and the second device determines the specific feedback type of the third feedback.
  • Determination manner 9 the first device determines the specific feedback type of the first feedback and the specific feedback type of the third feedback, and the second device determines the specific feedback type of the second feedback.
  • Determining manner 10 the first device determines the specific feedback type of the second feedback and the specific feedback type of the third feedback, and the third device determines the specific feedback type of the first feedback.
  • FIG. 19 is a schematic flow diagram II of the feedback indication method in scenario C.
  • the steps of the feedback indication method may include:
  • the first device sends a sensing request message to the second device, and the second device receives the sensing request message from the first device.
  • the sensing request message may include the above-mentioned first information.
  • the first information may include a first field, a second field, and a third field.
  • the first field can be used to indicate the specific feedback type of the first feedback, such as uncompressed CSI
  • the second field can be used to indicate the specific feedback type of the second feedback, such as compressed CSI
  • the third field can be used to indicate
  • For a specific feedback type of the third feedback if it is a perception measurement result, for specific implementation, reference may be made to relevant introductions in S601-S602 above, which will not be repeated here.
  • the perception request message may also include the above-mentioned mode indication information.
  • the relevant introduction in the above-mentioned first application scenario please refer to the relevant introduction in the above-mentioned first application scenario, which will not be repeated here.
  • the second device sends a sensing request message to the third device, and the third device receives the sensing request message from the second device.
  • the second device since the second device is the sensing receiver and the third device is the sensing sender, the second device needs to forward the sensing request message to the third device. For example, after receiving the sensing request message, it sends the sensing request message after a SIFS Perception request message.
  • the perception request message forwarded by the second device may include the first field, the second field, and the third field in the above-mentioned first information, or may include only the second field, which is not limited.
  • the third device sends NDPA.
  • the third device may send NDPA after a SIFS according to the sensing request message.
  • NDPA NDPA after a SIFS according to the sensing request message.
  • the third device sends an NDP.
  • the third device may send the NDP after a SIFS.
  • the third device sends a feedback request message.
  • the third device may send a feedback request message after a SIFS.
  • the feedback request message For the specific implementation of the feedback request message, refer to the related introduction in S205 above.
  • the second device sends the first feedback to the third device, and the third device receives the first feedback from the second device.
  • the third device can determine the first feedback according to the specific feedback type indicated by the first field, such as uncompressed CSI. repeat. In this way, after receiving the feedback request message, the third device may send the first feedback after one SIFS.
  • the third device sends the second feedback to the second device, and the second device receives the second feedback from the third device.
  • the second device may determine the second feedback, that is, compressed CSI according to the specific feedback type indicated by the above second field, such as compressed CSI, and the first feedback, such as uncompressed CSI. You can refer to the relevant introduction in the above-mentioned second application scenario, which will not be repeated here. In this way, after receiving the first feedback, the second device may send the second feedback to the second device after one SIFS.
  • the second device sends third feedback to the first device, and the first device receives the third feedback from the second device.
  • the second device may determine the third feedback, that is, the perception measurement result, according to the specific feedback type indicated by the third field above, such as the perception measurement result, and the second feedback, such as compressed CSI, to receive After receiving the second feedback, the third feedback is sent after one SIFS.
  • FIG. 20 is a schematic flow diagram of the third feedback indication method in scenario C.
  • the steps of the feedback indication method may include:
  • the first device sends a sensing request message to the second device, and the second device receives the sensing request message from the first device.
  • the perception request message may include the first field and the second field in the above first information, and further include the third field.
  • the first field may be used to indicate the specific feedback type of the first feedback, such as uncompressed CSI
  • the second field may be used to indicate the specific feedback type of the second feedback, such as compressed CSI
  • the third The field may be used to indicate that the feedback type of the third feedback is determined by the second device.
  • the perception request message may also include the above-mentioned mode indication information.
  • the relevant introduction in the above-mentioned first application scenario please refer to the relevant introduction in the above-mentioned first application scenario, which will not be repeated here.
  • the second device sends a sensing request message to the third device, and the third device receives the sensing request message from the second device.
  • the third device sends NDPA.
  • the third device sends a feedback request message.
  • the second device sends the first feedback to the third device, and the third device receives the first feedback from the second device.
  • the third device sends the second feedback to the second device, and the second device receives the second feedback from the third device.
  • the second device determines a specific feedback type of the third feedback according to the first information.
  • the second device can determine the specific feedback type of the third feedback according to the third field in the first information. If it is a perception measurement result, the specific implementation can refer to the relevant introduction in the above-mentioned second application scenario, which will not be repeated here. repeat. In this way, the second device may determine the third feedback, that is, the perception measurement result, according to the received second feedback, such as CSI, and the specific feedback type of the third feedback.
  • the execution order of S2003-S2007 and S2008 is not limited.
  • the second device sends third feedback to the first device, and the first device receives the third feedback from the second device.
  • FIG. 21 is a schematic flow diagram IV of the feedback indication method in scenario C.
  • the steps of the feedback indication method may include:
  • the first device sends a sensing request message to the second device, and the second device receives the sensing request message from the first device.
  • the perception request message may include the first field and the second field in the above first information, and further include the third field.
  • the first field may be used to indicate the specific feedback type of the first feedback, such as uncompressed CSI
  • the second field may be used to indicate that the feedback type of the second feedback is determined by the second device
  • the third field may be
  • the specific feedback type used to indicate the third feedback, such as the perception measurement result can refer to relevant introductions in S601-S602 above for specific implementation, and will not be repeated here.
  • the perception request message may also include the above-mentioned mode indication information.
  • the relevant introduction in the above-mentioned first application scenario please refer to the relevant introduction in the above-mentioned first application scenario, which will not be repeated here.
  • the second device determines a specific feedback type of the second feedback according to the first information.
  • the second device after the second device receives the above-mentioned perception request message, it can determine the specific feedback type of the second feedback according to the second field in the first information, such as compressed CSI, and the specific implementation can refer to the above-mentioned second application scenario. Relevant introductions will not be repeated here. In this way, the second device may generate second information to indicate a specific feedback type for determining the second feedback.
  • the second device sends a sensing request message to the third device, and the third device receives the sensing request message from the second device.
  • the second device since the second device is the sensing receiver and the third device is the sensing sender, the second device needs to forward the sensing request message to the third device. For example, after receiving the sensing request message, it sends the sensing request message after a SIFS Perception request message.
  • the perception request message forwarded by the second device may include the above-mentioned second information, and may also only include any of the following first information: the first field, the second field and the third field, the first field and the first field The second field, or the second field, is not limited.
  • the third device sends NDPA.
  • the third device sends an NDP.
  • the third device sends a feedback request message.
  • the second device sends the first feedback to the third device, and the third device receives the first feedback from the second device.
  • the foregoing second information may also be carried in the first feedback sent by the second device to the third device, which is not limited thereto. In other words, it only needs to execute S2102 before S2107.
  • the third device sends the second feedback to the second device, and the second device receives the second feedback from the third device.
  • the second device sends the third feedback to the first device, and the first device receives the third feedback from the second device.
  • FIG. 22 is a schematic diagram of the fifth flow of the feedback indication method in scenario C.
  • the steps of the feedback indication method may include:
  • the first device sends a sensing request message to the second device, and the second device receives the sensing request message from the first device.
  • the perception request message may include the first field and the second field in the above first information, and further include the third field.
  • the first field can be used to indicate that the feedback type of the first feedback is determined by the third device
  • the second field can be used to indicate the specific feedback type of the second feedback, such as compressed CSI
  • the third field can be used for indicating the specific feedback type of the third feedback, if it is a sensory measurement result, for specific implementation, refer to relevant introductions in S601-S602 above, which will not be repeated here.
  • the perception request message may also include the above-mentioned mode indication information.
  • the relevant introduction in the above-mentioned first application scenario please refer to the relevant introduction in the above-mentioned first application scenario, which will not be repeated here.
  • the second device sends a sensing request message to the third device, and the third device receives the sensing request message from the second device.
  • the second device since the second device is the sensing receiver and the third device is the sensing sender, the second device needs to forward the sensing request message to the third device. For example, after receiving the sensing request message, it sends the sensing request message after a SIFS Perception request message.
  • the sensing request message forwarded by the second device may only include any one of the following: the first field, the second field and the third field, or the first field and the second field, which is not limited.
  • the third device determines a specific feedback type of the first feedback according to the first information.
  • the third device can determine the specific feedback type of the first feedback according to the first field in the first information, such as uncompressed CSI, and the specific implementation can refer to the above second application scenario The relevant introductions in , will not be repeated here.
  • the third device may generate second information to indicate a specific feedback type for determining the first feedback.
  • the third device sends NDPA.
  • the third device sends an NDP.
  • the third device sends a feedback request message.
  • the above-mentioned second information may be carried in the NDPA sent by the second device to indicate the specific feedback type of the first feedback, but not limited, for example, it may also be carried in the NDP and the feedback request message sent by the third device.
  • S2203 may be executed before S2206.
  • the second device sends the first feedback to the third device, and the third device receives the first feedback from the second device.
  • the third device sends the second feedback to the second device, and the second device receives the second feedback from the third device.
  • the second device sends the third feedback to the first device, and the first device receives the third feedback from the second device.
  • the second device determines the specific feedback type of the first feedback, the specific feedback type of the second feedback, and the third feedback
  • the specific feedback type of the first feedback the second device determines the specific feedback type of the first feedback
  • the third device determines the specific feedback type of the second feedback and the specific feedback type of the third feedback, etc.
  • the relevant introductions in will not be repeated here.
  • the feedback type of multiple feedbacks at different levels is indicated by the first information, such as the feedback type of the first feedback, and/or Or, the feedback type of the second feedback can realize a more comprehensive and precise indication of the feedback type, thereby improving the applicability of the perception technology in multi-device and multiple interaction scenarios.
  • FIG. 23 is a second schematic flowchart of the feedback indication method provided by the embodiment of the present application.
  • the feedback indication method may be applicable to two of the three devices shown in FIG. 5 , such as the first device, the second device, and the third device, and communication between the first device and the second device.
  • the first device may be a sensing initiator
  • the second device may be a sensing responding end being a sensing sending end
  • the third device may be a sensing responding end being a sensing receiving end.
  • the feedback indication method may include the following steps:
  • the first device sends fourth information, and the second device receives the fourth information.
  • the fourth information may be used to indicate that the first device needs to obtain all or part of the feedback, such as the first feedback and/or the second feedback.
  • the specific implementation of the first feedback and the second feedback may refer to the first embodiment above, in This is no longer repeated.
  • the fourth information may include a plurality of bits, such as 2, 3 bits, etc.
  • the fourth information may indicate that the first device It is necessary to obtain the first feedback and/or the second feedback, which will be introduced respectively below.
  • multiple bits may form different indexes, and different indexes may indicate that the first device needs to acquire the first feedback and/or the second feedback. For example, as shown in Table 7 below.
  • the above index may include 2 bits to indicate various feedbacks that the first device needs to obtain.
  • the first device may traverse the table 7 to determine an index corresponding to the feedback that the first device needs to obtain, so as to generate fourth information that carries the index to indicate that the first device needs to obtain the feedback. For example, if the first device needs to obtain the first feedback, it traverses the table 7 to generate fourth information carrying an index of 00 to indicate that the first device needs to obtain the first feedback. For another example, if the first device needs to obtain the second feedback, it traverses the table 7 to generate fourth information carrying the index 01, which is used to indicate that the first device needs to obtain the second feedback. For another example, if the first device needs to obtain the first feedback and the second feedback, it traverses the table 7 to generate fourth information carrying the index 11 to indicate that the first device needs to obtain the first feedback and the second feedback.
  • the fourth information may include multiple bits, and each bit may be used to indicate whether the first device needs to acquire a corresponding type of feedback. For example, as shown in Table 8 below.
  • the bitmap in Table 8 may include 2 bits, and the 2 bits are in order from left to right, and each bit may be used to indicate whether the first device needs to obtain a corresponding type of feedback.
  • the first bit may be used to indicate whether the first device needs to obtain the first feedback, 1 indicates that the first device needs to obtain the first feedback, and 0 indicates that the first device does not need to obtain the first feedback.
  • the second bit may be used to indicate whether the first device needs to obtain the second feedback, and a value of 1 indicates that the first device needs to obtain the second feedback, and a bit of 0 indicates that the first device does not need to obtain the second feedback.
  • both the first bit and the second bit are 1, it indicates that the first device needs to obtain the first feedback and the second feedback.
  • the above fourth information may be carried in one or more of the following: signaling in the perception establishment phase, such as a perception establishment request message, a perception establishment reception message, or signaling in the perception measurement phase, such as a perception request message, and Realize signaling multiplexing, thereby reducing communication overhead and improving communication efficiency.
  • the second device may also send the fourth information to the third device (not shown in FIG. 23 ).
  • the third device can directly send the first feedback to the first device according to the fourth information, so that the first device can obtain the first feedback faster, thereby reducing communication time. delay and improve communication efficiency.
  • the second device sends the first feedback and/or the second feedback according to the fourth information, and the first device receives the first feedback and/or the second feedback.
  • the second device may receive the first feedback from the third device. If the fourth information indicates that the first device needs to acquire part of the feedback, such as the first feedback, the second device may send the first feedback to the first device, that is, forward the first feedback. If the fourth information indicates that the first device needs to obtain part of the feedback, such as the second feedback, the second device may determine the second feedback, such as the perception measurement result, according to the first feedback, such as the CSI, and send the second feedback to the second device .
  • the second device may determine the second feedback according to the first feedback, and then send the first feedback and the second feedback to the second device, Such as packaging or sending the first feedback and the second feedback separately.
  • FIG. 24 is a schematic flowchart of the feedback indication method V in scenario A.
  • the steps of the feedback indication method may include:
  • the first device sends a sensing request message to the second device, and the second device receives the sensing request message from the first device.
  • the sensing request message may also carry the above fourth information, and the fourth information may be used to indicate that the first device needs to obtain the first feedback and the second feedback.
  • the fourth information may be used to indicate that the first device needs to obtain the first feedback and the second feedback.
  • the second device sends NDPA.
  • the second device sends an NDP.
  • the first device sends the first feedback to the second device, and the second device receives the first feedback from the first device.
  • the second device sends the second feedback to the first device, and the first device receives the second feedback from the second device.
  • the second device sends the first feedback to the first device, and the first device receives the first feedback from the second device.
  • the second device may send the first feedback to the first device according to the fourth information, such as sending the first feedback and the second feedback in a package.
  • the fourth information is used to indicate that the first device needs to obtain the first feedback
  • the second device may directly forward the first feedback from the second device to the first device according to the fourth information without generating the second feedback.
  • FIG. 25 is a schematic diagram of the fifth flow of the feedback indication method in scenario B.
  • the steps of the feedback indication method may include:
  • the first device sends a sensing request message to the second device, and the second device receives the sensing request message from the first device.
  • the sensing request message may also carry the above fourth information, and the fourth information may be used to indicate that the first device needs to obtain the first feedback and the second feedback.
  • the fourth information may be used to indicate that the first device needs to obtain the first feedback and the second feedback.
  • the second device sends NDPA.
  • the second device sends an NDP.
  • the second device sends a feedback request message.
  • the third device sends the first feedback to the second device, and the third device receives the first feedback from the second device.
  • the third device sends the first feedback to the first device, and the third device receives the first feedback from the first device.
  • the second device sends the second feedback to the first device, and the first device receives the second feedback from the second device.
  • the second device sends the first feedback to the first device, and the first device receives the first feedback from the second device.
  • the second device may send the first feedback to the first device according to the fourth information, such as sending the first feedback and the second feedback in a package. It should be pointed out that if the fourth information is used to indicate that the first device needs to obtain the first feedback, the second device may directly forward the first feedback from the third device to the first device according to the fourth information without generating the second feedback . In addition, if the second device knows that the third device can directly communicate with the first device, the second device may not send the first feedback.
  • FIG. 26 is a schematic flow diagram of the feedback indication method VI in scenario C.
  • the steps of the feedback indication method may include:
  • the first device sends a sensing request message to the second device, and the second device receives the sensing request message from the first device.
  • the sensing request message may also carry the above fourth information, and the fourth information may be used to indicate that the first device needs to obtain the first feedback, the second feedback and the third feedback.
  • the fourth information may be used to indicate that the first device needs to obtain the first feedback, the second feedback and the third feedback.
  • the second device sends a sensing request message to the third device, and the third device receives the sensing request message from the second device.
  • the third device sends NDPA.
  • the third device sends an NDP.
  • the third device sends a feedback request message.
  • the second device sends the first feedback to the third device, and the third device receives the first feedback from the second device.
  • the third device sends the second feedback to the second device, and the second device receives the second feedback from the third device.
  • the third device sends the first feedback to the second device, and the second device receives the first feedback from the third device.
  • the third device may send the first feedback to the second device according to the fourth information, such as sending the first feedback and the second feedback in a package. It should be pointed out that if the fourth information is used to indicate that the first device only needs to obtain the first feedback, the third device can directly forward the first feedback from the second device to the second device according to the fourth information without generating a second feedback. feedback.
  • the second device sends the third feedback to the first device, and the first device receives the third feedback from the second device.
  • the second device sends the first feedback and the second feedback to the first device, and the first device receives the first feedback and the second feedback from the second device.
  • the second device may send the first feedback and the second feedback to the first device according to the fourth information, such as sending the first feedback, the second feedback and the third feedback in a package. It should be pointed out that if the fourth information is used to indicate that the first device only needs to obtain the first feedback and/or the second feedback, the second device may directly forward the first feedback from the second device to the first device according to the fourth information and/or second feedback without generating second feedback.
  • the fourth information is used to indicate that the first device only needs to obtain the first feedback and/or the second feedback
  • the second device may directly forward the first feedback from the second device to the first device according to the fourth information and/or second feedback without generating second feedback.
  • the first device may send fourth information to the second device according to actual requirements, such as service requirements.
  • the second device can send feedback that is actually needed to the first device according to the fourth information, but not feedback that is not actually needed, so as to avoid sending redundant information, thereby reducing communication overhead and improving communication efficiency.
  • the above-mentioned first embodiment and the above-mentioned second embodiment may be implemented independently or in combination, which is not limited thereto.
  • FIG. 27 is a third schematic flowchart of the feedback indication method provided by the embodiment of the present application.
  • the feedback indication method may be applicable to two of the three devices shown in FIG. 5 , such as the first device, the second device, and the third device, and communication between the first device and the second device.
  • the first device may be a sensing initiator
  • the second device may be a sensing responding end being a sensing sending end
  • the third device may be a sensing responding end being a sensing receiving end.
  • the feedback indication method may include the following steps:
  • the first device generates fifth information.
  • the fifth information may be used to instruct the second device to determine all configuration parameters of NDPA, or may be used to indicate a part of configuration parameters of NDPA, and another part of configuration parameters of NDPA is determined by the second device.
  • all configuration parameters of NDPA may include: NDPA physical layer protocol data unit (physical layer protocol date units, PPDU) type, LTF size, target user, feedback time limit, determine the sensing receiver participating in the sensing process, determine the sensing process number, or the number of the sensing session, or determine the frequency band information and resource information of the sensing process.
  • the feedback time limit is used to indicate that the first device, such as the sensing initiator, will trigger feedback within a preset time period, so that the second device is ready for feedback.
  • some of the configuration parameters determined by the second device may include one or more of the following: determining the sensing receiving end participating in the sensing process, determining the number of the sensing process, or the number of the sensing session, or determining the frequency band information and resource information, etc.
  • the first device may be based on one or more of the following: the state of the first device, the state of the second device, the state of the third device, the service requirements of the first device, the service requirements of the second device, or the third
  • the business requirements of the equipment determine the fifth information, which is not limited.
  • the first device sends fifth information, and the second device receives the fifth information.
  • the fifth information may be carried in one or more of the following: signaling in the perception establishment phase, such as a perception establishment request message, a perception establishment reception message, or signaling in the perception measurement phase, such as a perception request message, so as to realize Reuse, thereby reducing communication overhead, improving communication efficiency,
  • the second device parses the fifth information.
  • the second device may determine all configuration parameters of the NDPA by parsing the fifth information.
  • the configuration parameters of NDPA can be determined by the cooperation of the first device and the second device, in this way, the configuration parameters of NDPA can be flexibly determined according to business needs, so that the configuration parameters of NDPA can meet business needs .
  • the first device determines the configuration parameters of the NDPA.
  • the second device determines the configuration parameters of the NDPA.
  • the first device instructs the second device to determine at least part of the configuration parameters of the NDPA to meet the service requirements of the second device.
  • the above-mentioned first embodiment, the above-mentioned second embodiment, and the above-mentioned third embodiment can be implemented independently, or can be implemented in combination of any two or three embodiments, which is not limited.
  • the feedback indicating method of the embodiment of the present application is introduced above, and the feedback indicating device of the embodiment of the present application is introduced below.
  • the feedback indicating device of the embodiment of the present application includes a feedback indicating device applied to the sending end and a feedback indicating device applied to the receiving end. The following are respectively introduce.
  • the feedback indicating device applied to the sending end may be applicable to the communication system shown in FIG. 5 , and has the function of the first device in the feedback indicating method shown in FIG. 6 .
  • the feedback indicating device applied to the receiving end may be applicable to the communication system shown in FIG. 5 and have any function of the second device in the feedback indicating method shown in FIG. 6 .
  • FIG. 28 is a schematic structural diagram of a feedback indicating device 2800 applied to a sending end. As shown in FIG. Units, such as the transceiver unit 2801 and the processing unit 2802.
  • the processing unit 2802 is configured to generate the first frame.
  • the first frame includes: first information, where the first information is used to indicate the feedback type of the first feedback, and/or, the feedback type of the second feedback.
  • the first feedback and the second feedback are feedbacks of different levels.
  • the transceiver unit 2801 is configured to send the first frame.
  • the first frame may further include: mode indication information, and the mode indication information may be used to indicate that the first information indicates any of the following: the feedback type of the first feedback, the feedback type of the second feedback, Or the feedback type of the first feedback and the feedback type of the second feedback.
  • the feedback type of the first feedback may include at least one of the following: uncompressed channel state information CSI, compressed CSI, empty data packet NDP, sensing measurement results, the feedback type determined by the sensing initiator, The feedback type is determined by the sensing responder, the feedback type is determined by the sensing sending end, or the feedback type is determined by the sensing receiving end, and the sensing initiator is the first device.
  • the feedback type of the second feedback may include at least one of the following: uncompressed CSI, compressed CSI, NDP, perception measurement results, the feedback type determined by the perception initiator, and the feedback determined by the perception responder type, the feedback type is determined by the sensing sending end, or the feedback type is determined by the sensing receiving end, and the sensing initiator is the first device.
  • the first information may be carried in at least one of the following: signaling in a perception establishment phase, or a sensing request message in a sensing measurement phase.
  • the first feedback and the second feedback are different levels of feedback, which may refer to: the sending timing of the first feedback is different from the sending timing of the second feedback, or the sending object of the first feedback is different from the sending object of the second feedback.
  • the sender is different.
  • the first information may include: a first field and/or a second field.
  • the first field may be used to indicate the feedback type of the first feedback
  • the second field may be used to indicate the feedback type of the second feedback.
  • the feedback indication device 2800 may further include a storage unit (not shown in FIG. 28 ), where programs or instructions are stored.
  • the processing unit 2802 executes the program or instruction, the feedback indicating apparatus 2800 can perform the function of the first device in the feedback indicating method shown in FIG. 6 .
  • the processing unit 2802 involved in the feedback indication device 2800 may be implemented by a processor or a processor-related circuit component; the transceiver unit 2801 may be implemented by a transceiver or a transceiver-related circuit component.
  • the feedback indication device 2800 may be a terminal device or a network device, or a chip (system) or other components or components that may be set in the terminal device or the network device, or may be a device including the terminal device or the network device. device, which is not limited in this application.
  • FIG. 29 is a schematic structural diagram of a feedback indicating device 2900 applied to a receiving end.
  • the feedback indicating device 2900 includes the function of the second device for performing the feedback indicating method shown in FIG. 6 units, such as the transceiver unit 2901 and the processing unit 2902.
  • the transceiver unit 2901 is configured to receive the first frame.
  • the first frame includes: first information, where the first information is used to indicate the feedback type of the first feedback, and/or, the feedback type of the second feedback.
  • the first feedback and the second feedback are feedbacks of different levels.
  • the processing unit 2902 is configured to parse the first frame.
  • the first frame may further include: mode indication information.
  • the mode indication information may be used to indicate that the first information indicates any of the following: a feedback type of the first feedback, a feedback type of the second feedback, or a feedback type of the first feedback and a feedback type of the second feedback.
  • the feedback type of the first feedback may include at least one of the following: uncompressed CSI, compressed CSI, NDP, perception measurement results, the feedback type determined by the perception initiator, and the feedback determined by the perception responder type, the feedback type is determined by the sensing sending end, or the feedback type is determined by the sensing receiving end, and the sensing initiator may be the first device.
  • the feedback type of the second feedback may include at least one of the following: uncompressed CSI, compressed CSI, NDP, perception measurement results, the feedback type determined by the perception initiator, and the feedback determined by the perception responder type, the feedback type is determined by the sensing sending end, or the feedback type is determined by the sensing receiving end, and the sensing initiator may be the first device.
  • the first feedback and the second feedback are different levels of feedback, which may refer to: the sending timing of the first feedback is different from the sending timing of the second feedback, or the sending object of the first feedback is different from the sending object of the second feedback.
  • the sender is different.
  • the processing unit 2902 is further configured to control the transceiving unit 2901 to send the second information to the third device after parsing the first frame.
  • the second information is used to indicate that the feedback type of the first feedback includes at least one of the following: uncompressed CSI, compressed CSI, NDP, perceptual measurement results, or the feedback type determined by the perceptual receiving end, and the perceiving receiving end may be the first Three devices.
  • the second information may be carried in signaling in the perception measurement phase.
  • the first information may include: a first field and a second field.
  • the first field may be used to indicate the feedback type of the first feedback
  • the second field may be used to indicate the feedback type of the second feedback.
  • the first field may be used to indicate that the feedback type of the first feedback includes at least one of the following: uncompressed CSI, compressed CSI, NDP, sensory measurement results, or the feedback type determined by the sensory receiver, and the sensory receiver
  • the end may be the third device, and the processing unit 2902 is further configured to control the transceiving unit 2901 to send only the first field to the third device after parsing the first frame.
  • the second field may be used to indicate the feedback type of the second feedback includes: the feedback type is determined by the sensing receiving end, and the sensing receiving end may be a third device, and the processing unit 2902 is further configured to, after parsing the first frame, Control the transceiving unit 2901 to send only the second field to the third device.
  • the transceiving unit 2901 is further configured to receive third information from the third device after sending only the second field to the third device.
  • the third information may be used to indicate that the feedback type of the second feedback includes at least one of the following: uncompressed CSI, compressed CSI, NDP, or perception measurement results.
  • the first information may be carried in at least one of the following: signaling in the perception establishment phase, or signaling in the perception measurement phase, so as to realize signaling multiplexing, thereby reducing communication overhead and improving communication efficiency .
  • the feedback indication device 2900 may also include a storage unit (not shown in FIG. 29 ), where programs or instructions are stored.
  • the processing unit 2902 executes the program or instruction
  • the feedback indication apparatus 2900 can execute the function of the second device in the feedback indication method shown in FIG. 6 .
  • the processing unit 2902 involved in the feedback indication device 2900 may be implemented by a processor or a processor-related circuit component; the transceiver unit 2901 may be implemented by a transceiver or a transceiver-related circuit component.
  • the feedback indicating device 2900 may be a terminal device or a network device, or a chip (system) or other components or components that may be set in the terminal device or the network device, or may be a device, which is not limited in this application.
  • the feedback indicating device applied to the sending end may be applicable to the communication system shown in FIG. 5 , and has the function of the first device in the feedback indicating method shown in FIG. 23 .
  • the feedback indicating device applied to the receiving end may be applicable to the communication system shown in FIG. 5 and have any function of the second device in the feedback indicating method shown in FIG. 23 .
  • FIG. 30 is a schematic structural diagram of a feedback indicating device 3000 applied to a sending end. As shown in FIG. Units, such as sending unit 3001 and receiving unit 3002.
  • a sending unit 3001 configured to send fourth information.
  • the fourth information is used to indicate that the first device needs to acquire the first feedback and/or the second feedback, and the first feedback and the second feedback are feedbacks of different levels.
  • the receiving unit 3002 is configured to receive the first feedback and/or the second feedback.
  • the first feedback and the second feedback are different levels of feedback, which may refer to: the sending timing of the first feedback is different from the sending timing of the second feedback, or the sending object of the first feedback is different from the sending object of the second feedback.
  • the sender is different.
  • the fourth information can be carried in at least one of the following: signaling in the perception establishment phase, perception request message in the perception measurement phase, so as to realize signaling multiplexing, thereby reducing communication overhead and improving communication efficiency .
  • the sending unit 3001 and the receiving unit 3002 may also be integrated into one unit, such as a transceiver unit (not shown in FIG. 30 ).
  • the transceiver unit is used to implement the sending function and receiving function of the feedback indicating device 3000 .
  • the feedback indication apparatus 3000 may further include a processing unit 3003 (shown by a dashed box in FIG. 30 ). Wherein, the processing unit 3003 is used to realize the processing function of the feedback indicating device 3000 .
  • the feedback indication device 3000 may also include a storage unit (not shown in FIG. 30 ), where programs or instructions are stored.
  • the processing unit 3003 executes the program or instruction, the feedback indication apparatus 3000 can perform the function of the first device in the feedback indication method shown in FIG. 23 .
  • the processing unit 3001 involved in the feedback indication device 3000 may be implemented by a processor or a processor-related circuit component, which may be a processor or a processing unit; the transceiver unit may be implemented by a transceiver or a transceiver-related circuit component.
  • the feedback indication device 3000 may be a terminal device or a network device, or may be a chip (system) or other components or components disposed in the above-mentioned terminal device or network device, or a device including the terminal device or network device , which is not limited in this embodiment of the present application.
  • FIG. 31 is a schematic structural diagram of a feedback indicating device 3100 applied to a receiving end.
  • Units such as the transceiver unit 3101 and the processing unit 3102.
  • the transceiver unit 3101 is configured to receive fourth information.
  • the fourth information is used to indicate that the first device needs to acquire the first feedback and/or the second feedback, and the first feedback and the second feedback are feedbacks of different levels.
  • the processing unit 3102 is configured to control the transceiving unit 3102 to send the first feedback and/or the second feedback according to the fourth information.
  • the first feedback and the second feedback are different levels of feedback, which may refer to: the sending timing of the first feedback is different from the sending timing of the second feedback, or the sending object of the first feedback is different from the sending object of the second feedback.
  • the sender is different.
  • the fourth information may be carried in at least one of the following: signaling in a perception establishment phase, and a sensing request message in a sensing measurement phase.
  • the feedback indication device 3100 may also include a storage unit (not shown in FIG. 31 ), which stores programs or instructions.
  • the processing unit 3102 executes the program or instruction
  • the feedback indication apparatus 3100 can execute the function of the second device in the feedback indication method shown in FIG. 23 .
  • the processing unit 3102 involved in the feedback indication device 3100 may be implemented by a processor or a processor-related circuit component, which may be a processor; the transceiver unit 3101 may be implemented by a transceiver or a transceiver-related circuit component.
  • the feedback indication device 3100 may be a terminal device or a network device, or a chip (system) or other components or components that may be set in the terminal device or network device, or may be a device, which is not limited in this application.
  • the feedback indicating device applied to the sending end may be applicable to the communication system shown in FIG. 5 , and has the function of the first device in the feedback indicating method shown in FIG. 27 .
  • the feedback indication device applied to the receiving end may be applicable to the communication system shown in FIG. 5 and have any function of the second device in the feedback indication method shown in FIG. 27 .
  • FIG. 32 is a schematic structural diagram of a feedback indicating device 3200 applied to a sending end.
  • Units such as the transceiver unit 3201 and the processing unit 3202.
  • the processing unit 3202 is configured to generate fifth information.
  • the fifth information is used to instruct the second device to determine all configuration parameters of NDPA, or the fifth information is used to indicate a part of configuration parameters of NDPA, and another part of configuration parameters of NDPA is determined by the second device.
  • a transceiver unit 3201 configured to send fifth information.
  • the fifth information may be carried in one or more of the following: signaling in the perception establishment phase, or a perception request message in the perception measurement phase, so as to realize signaling multiplexing, thereby reducing communication overhead, Improve communication efficiency.
  • the feedback indication device 3200 may further include a storage unit (not shown in FIG. 32 ), where programs or instructions are stored.
  • the processing unit 3202 executes the program or instruction, the feedback indication apparatus 3200 can perform the function of the first device in the feedback indication method shown in FIG. 27 .
  • the processing unit 3202 involved in the feedback indication device 3200 may be implemented by a processor or processor-related circuit components; the transceiver unit 3201 may be implemented by a transceiver or transceiver-related circuit components.
  • the feedback indicating device 3200 may be a terminal device or a network device, or a chip (system) or other components or components that may be set in the terminal device or the network device, or may be a device, which is not limited in this application.
  • FIG. 33 is a schematic structural diagram of a feedback indicating device 3300 applied to a receiving end.
  • Units such as the transceiver unit 3301 and the processing unit 3302.
  • the transceiver unit 3301 is configured to receive fifth information.
  • the fifth information is used to instruct the second device to determine all configuration parameters of NDPA, or the fifth information is used to indicate a part of configuration parameters of NDPA, and another part of configuration parameters of NDPA is determined by the second device.
  • the processing unit 3302 is configured to parse the fifth information.
  • the fifth information may be carried in one or more of the following: signaling in the perception establishment phase, or a perception request message in the perception measurement phase.
  • the feedback indicating device 3300 may also include a storage unit (not shown in FIG. 33 ), where programs or instructions are stored.
  • the processing unit 3302 executes the program or instruction
  • the feedback indication apparatus 3300 can execute the function of the second device in the feedback indication method shown in FIG. 27 .
  • the processing unit 3302 involved in the feedback indication device 3300 may be implemented by a processor or a processor-related circuit component; the transceiver unit 3301 may be implemented by a transceiver or a transceiver-related circuit component.
  • the feedback indicating device 3300 may be a terminal device or a network device, or a chip (system) or other components or components that may be set in the terminal device or the network device, or may be a device including the terminal device or the network device. device, which is not limited in this application.
  • the above describes the feedback indicating device applied to the sending end and the feedback indicating device applied to the receiving end according to the embodiments of the present application.
  • the following introduces possible product forms of the feedback indicating device applied to the sending end and the feedback indicating device applied to the receiving end. It should be understood that any form of product with the characteristics of the feedback indicating device applied to the sending end as described in FIG. 28, FIG. 30 or FIG. Any form of product that feedbacks the features of the indicating device falls within the protection scope of the present application. It should also be understood that the following introduction is only an example, and does not limit the product form of the feedback indicating device applied to the sending end and the product form of the feedback indicating device applied to the receiving end in the embodiment of the present application.
  • the feedback indicating device applied to the sending end and the feedback indicating device applied to the receiving end described in the embodiment of the present application can be realized by a general bus architecture.
  • the above-mentioned feedback indication device applied to the sending end includes a processor, and a transceiver for communication is internally connected to the processor; the processor is used to execute the processing of the first device in the feedback indication mode shown in FIG. 6 , FIG. 23 or FIG. 27 Function.
  • the transceiver is used to perform the transceiving function of the first device in the feedback indication manner shown in FIG. 6 , FIG. 23 or FIG. 27 above.
  • the feedback indication device applied to the sending end may further include a memory, where the memory is used to store instructions executed by the processor.
  • the above-mentioned feedback indication device applied to the receiving end includes a processor, which is internally connected with a transceiver for communication; the processor is used to execute the processing of the second device in the feedback indication mode shown in FIG. 6, FIG. 23 or FIG. 27 Function.
  • the transceiver is used to execute the transceiving function of the second device in the feedback indication manner shown in FIG. 6 , FIG. 23 or FIG. 27 above.
  • the feedback indication device applied to the receiving end may further include a memory, where the memory is used to store instructions executed by the processor.
  • the feedback indicating device applied to the sending end and the feedback indicating device applied to the receiving end described in the embodiments of the present application may be implemented by a general-purpose processor.
  • the general-purpose processor implementing the feedback indication device applied to the sending end includes a processing circuit, and an output interface for communication is internally connected to the processing circuit.
  • the processing circuit is used to control the output interface to perform the sending and receiving function.
  • the general-purpose processor may further include a storage medium for storing instructions executed by the processing circuit.
  • the general-purpose processor for implementing the feedback indication device applied to the receiving end includes a processing circuit, which is internally connected with an input interface for communication, and the processing circuit is used to control the output interface to perform a sending and receiving function.
  • the general-purpose processor may further include a storage medium for storing instructions executed by the processing circuit.
  • the feedback indicating device applied to the sending end and the feedback indicating device applied to the receiving end described in the embodiment of the application can also be realized by using the following: one or more FPGAs (Field Programmable Gate Array ), PLD (programmable logic device), controller, state machine, gate logic, discrete hardware components, any other suitable circuit, or any combination of circuits capable of performing the various functions described throughout this application.
  • FPGAs Field Programmable Gate Array
  • PLD programmable logic device
  • controller state machine
  • gate logic discrete hardware components
  • any other suitable circuit any combination of circuits capable of performing the various functions described throughout this application.
  • the feedback indicating device applied to the sending end and the feedback indicating device applied to the receiving end in the above various product forms respectively have any functions of the sending end and the receiving end in the above method embodiments, and will not be repeated here.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present application.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
  • the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of software products, and the computer software products are stored in a storage medium
  • several instructions are included to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

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Abstract

本申请提供一种反馈指示方法及装置，用以实现更全面地进行反馈指示，从而提高感知技术在多设备，及多次交互场景下的适用性，可应用于通信系统中。该方法包括：第一设备生成第一帧，并发送第一帧。其中，所述第一帧包括：第一信息，该第一信息用于指示第一反馈的反馈类型，和/或，第二反馈的反馈类型。第一反馈与第二反馈是不同层级的反馈。

Description

反馈指示方法及装置
本申请要求于2021年6月17日提交国家知识产权局、申请号为202110674951.7、申请名称为“反馈指示方法及装置”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
本申请涉及通信领域，尤其涉及一种反馈指示方法及装置。
背景技术
无线无源感知(以下简称感知)是一种不需要目标物携带信号源，如电子标签，即可感知目标物状态的技术。
具体而言，感知过程中的设备可以包括：发送设备以及接收设备。其中，发送设备和接收设备可以是不同的两个设备。发送设备可以发送测量信号，如空数据分组(null data packet，NDP)。相应地，接收设备可接收到受目标物干扰的测量信号，并确定预设的参考测量信号与受目标物干扰的测量信号之间的信道变化，如信道状态信息(channel state information，CSI)。如此，接收设备可以直接向发送设备反馈该信道变化，以便发送设备根据信道变化确定目标物的状态，从而实现运动监测、手势识别、呼吸睡眠监测等功能。
然而，随着技术发展，在一次感知过程中，设备的数量，及交互次数可能越来越多，上述接收设备直接向发送设备反馈的方式，已逐渐无法适用于多设备，及多次交互的场景。
发明内容
本申请实施例提供一种反馈指示方法及装置，用以实现更全面地进行反馈指示，从而提高感知技术在多设备，及多次交互场景下的适用性。
为达到上述目的，本申请采用如下技术方案：
第一方面，提供一种反馈指示方法。该方法包括：第一设备生成第一帧，并发送第一帧。其中，所述第一帧包括：第一信息，该第一信息用于指示第一反馈的反馈类型，和/或，第二反馈的反馈类型。第一反馈与第二反馈是不同层级的反馈。
根据第一方面所述的方法可知，在多设备，及多次交互的场景中，通过第一信息指示不同层级的多个反馈的反馈类型，如第一反馈的反馈类型，和/或，第二反馈的反馈类型，可实现更全面、更精确地指示反馈类型，从而可以提高感知技术在多设备，多次交互场景下的适用性。
一种可能的设计方案中，第一帧还可以包括：模式指示信息，模式指示信息可以用于指示第一信息是指示如下任一种：第一反馈的反馈类型、第二反馈的反馈类型、或第一反馈的反馈类型和第二反馈的反馈类型。如此，收端设备，如第二设备可根据模式指示信息，准确地确定第一信息的指示内容，以避免因误确定第一信息的指示内容而导致误反馈，从而可以提高测量的稳定性。
一种可能的设计方案中，第一反馈的反馈类型可以包括以下至少一种：非压缩的信道状态信息CSI、压缩的CSI、空数据分组NDP、感知测量结果、由感知发起端确定反馈类型、由感知响应端确定反馈类型、由感知发送端确定反馈类型、或由感知接收端确定反馈类型，感知发起端为第一设备。可以看出，第一设备可以根据实际需求，灵活确定第一反馈的反馈类型。比如，若需要提高通信效率，则第一设备可确定第一反馈的反馈类型为压缩的CSI，以降低第一反馈的数据大小，从而可以提高通信效率，降低通信开销。又比如，若需要降低感知测量的时延，则第一设备可确定第一反馈的反馈类型为NDP，以便第一设备根据NDP自行确定感知测量结果，从而避免由其他设备，如感知响应端、感知发送端、或感知接收端确定感知测量结果而造成的时延，以提高测量效率。还比如，若需要降低第一设备的运算负荷，则第一设备可确定反馈类型为感知测量结果，以便第一设备可以接收来自其他设备的感知测量结果，从而无需第一设备自行计算感知测量结果，以降低第一设备的运算负荷。再比如，若其他设备的业务对第一反馈的反馈类型有要求，则第一设备可确定第一反馈的反馈类型为由其他设备确定反馈类型，以便第一反馈能够满足其他设备的业务需求，以提高业务的可靠性和稳定性。
一种可能的设计方案中，第二反馈的反馈类型可以包括以下至少一种：非压缩的CSI、压缩的CSI、NDP、感知测量结果、由感知发起端确定反馈类型、由感知响应端确定反馈类型、由感知发送端确定反馈类型、或由感知接收端确定反馈类型，感知发起端为第一设备。可以看出，第一设备可以根据实际需求，灵活确定第二反馈的反馈类型。比如，若需要提高通信效率，则第一设备可确定第二反馈的反馈类型为压缩的CSI，以降低第二反馈的数据大小，从而可以提高通信效率，降低通信开销。又比如，若需要降低感知测量的时延，则第一设备可确定第二反馈的反馈类型为NDP，以便第一设备根据NDP自行确定感知测量结果，从而避免由其他设备确定感知测量结果而造成的时延，以提高测量效率。还比如，若需要降低第一设备的运算负荷，则第一设备可确定第二反馈的反馈类型为感知测量结果，以便第一设备可以接收来自其他设备的感知测量结果，从而无需第一设备自行计算感知测量结果，以降低第一设备的运算负荷。再比如，若其他设备的业务对第二反馈的反馈类型有要求，则第一设备可确定第二反馈的反馈类型为由其他设备确定反馈类型，以便第二反馈能够满足其他设备的业务需求，以提高业务的可靠性和稳定性。
一种可能的设计方案中，第一信息可以承载在以下至少一项中：感知建立阶段的信令、或感知测量阶段的感知请求消息，以实现信令复用，从而降低通信开销，提高通信效率。
一种可能的设计方案中，第一反馈与第二反馈是不同层级的反馈可以指：第一反馈的发送时机与第二反馈的发送时机不同，或第一反馈的发送对象与第二反馈的发送对象不同。
一种可能的设计方案中，第一信息可以包括；第一字段和/或第二字段。其中，第一字段可以用于指示所述第一反馈的反馈类型，第二字段可以用于指示第二反馈的反馈类型。如此，如果第一设备只需要指示第一反馈，则可以只发送第一字段，而不发送第二字段。同理，如果第一设备只需要指示第二反馈，则可以只发送第二字段， 而不发送第一字段。如此，可以避免发送冗余信息，从而降低通信开销，以提高通信效率。
第二方面，提供一种反馈指示方法。该方法包括：第二设备接收第一帧，并解析第一帧。其中，第一帧包括：第一信息，该第一信息用于指示第一反馈的反馈类型，和/或，第二反馈的反馈类型。该第一反馈与第二反馈是不同层级的反馈。
一种可能的设计方案中，第一帧还可以包括：模式指示信息。其中，模式指示信息可以用于指示第一信息是指示如下任一种：第一反馈的反馈类型、第二反馈的反馈类型、或第一反馈的反馈类型和第二反馈的反馈类型。
一种可能的设计方案中，第一反馈的反馈类型可以包括以下至少一种：非压缩的CSI、压缩的CSI、NDP、感知测量结果、由感知发起端确定反馈类型、由感知响应端确定反馈类型、由感知发送端确定反馈类型、或由感知接收端确定反馈类型，感知发送端可以为第二设备。
一种可能的设计方案中，第二反馈的反馈类型可以包括以下至少一种：非压缩的CSI、压缩的CSI、NDP、感知测量结果、由感知发起端确定反馈类型、由感知响应端确定反馈类型、由感知发送端确定反馈类型、或由感知接收端确定反馈类型，感知发送端可以为第二设备。
一种可能的设计方案中，第一反馈与第二反馈是不同层级的反馈可以指：第一反馈的发送时机与第二反馈的发送时机不同，或第一反馈的发送对象与第二反馈的发送对象不同。
一种可能的设计方案中，若第一信息未指示第一反馈的反馈类型，或者第一信息指示第一反馈的反馈类型可以包括：由感知发送端确定反馈类型，感知发送端可以为第二设备，如此，则第二设备解析所述第一帧之后，第二方面所述的方法还可以包括：第二设备向第三设备发送第二信息。其中，第二信息用于指示第一反馈的反馈类型包括如下至少一项：非压缩的CSI、压缩的CSI、NDP、感知测量结果、或由感知接收端确定反馈类型，感知接收端可以为第三设备。可以看出，若第一信息未指示第一反馈的反馈类型为如下至少一项：非压缩的CSI、压缩的CSI、NDP、或感知测量结果，即未指示第一反馈的内容，则第二信息可以补充指示第一反馈的内容，以确保第三设备可以正常地发送第一反馈，从而确保测量的稳定性。
可选地，第二信息可以承载在以下至少一项中：感知测量阶段的信令、或感知报告阶段的信令中，以实现信令复用，从而降低通信开销，提高通信效率。
一种可能的设计方案中，第一信息可以包括；第一字段和第二字段。其中，第一字段可以用于指示第一反馈的反馈类型，第二字段可以用于指示第二反馈的反馈类型。
可选地，第一字段可以用于指示第一反馈的反馈类型包括如下至少一项：非压缩的CSI、压缩的CSI、NDP、感知测量结果、或由感知接收端确定反馈类型，且感知接收端可以为第三设备，在第二设备解析第一帧之后，第二方面所述的方法还可以包括：第二设备向第三设备只发送第一字段。
可选地，第二字段可以用于指示第二反馈的反馈类型包括：由感知接收端确定反馈类型，且感知接收端可以为第三设备，在第二设备解析第一帧之后，第二方面所述 的方法还可以包括：第二设备向第三设备只发送第二字段。
可以看出，如果第二设备只需要指示第一反馈，则第二设备可以只发送第一字段，而不发送第二字段。同理，如果第二设备只需要指示第二反馈，则第二设备可以只发送第二字段，而不发送第一字段。如此，可以避免发送冗余信息，从而降低通信开销，以提高通信效率。
进一步地，第二设备向第三设备只发送第二字段之后，第二方面所述的方法还可以包括：第二设备接收来自第三设备的第三信息。其中，第三信息可以用于指示第二反馈的反馈类型包括如下至少一项：非压缩的CSI、压缩的CSI、NDP、或感知测量结果。可以看出，若第二设备未确定第二反馈的反馈类型为如下至少一项：非压缩的CSI、压缩的CSI、NDP、或感知测量结果，即未确定第二反馈的内容，则第三设备可以补充确定第一反馈的内容，以确保第二设备可以正常地发送第二反馈，从而确保测量的稳定性。
一种可能的设计方案中，第一信息可以承载在以下至少一项中：感知建立阶段的信令、或感知测量阶段的信令，以实现信令复用，从而降低通信开销，提高通信效率。
此外，第二方面所述的反馈指示方法的技术效果可以参考第一方面所述的反馈指示方法的技术效果，此处不再赘述。
第三方面，提供一种反馈指示方法。该方法包括：第一设备发送第四信息，以接收第一反馈和/或第二反馈。其中，第四信息用于指示第一设备需要获取第一反馈和/或第二反馈，且第一反馈与第二反馈是不同层级的反馈。
根据第三方面所述的方法可知，第一设备可以根据实际需求，如业务的需求，向第二设备发送第四信息。如此，第二设备可以根据第四信息，向第一设备发送实际需要的反馈，而不发送实际不需要的反馈，以避免发送冗余信息，从而降低通信开销，提高通信效率。
一种可能的设计方案中，第一反馈与第二反馈是不同层级的反馈可以指：第一反馈的发送时机与第二反馈的发送时机不同，或第一反馈的发送对象与第二反馈的发送对象不同。
一种可能的设计方案中，第四信息可以承载在以下至少一项中：感知建立阶段的信令、感知测量阶段的感知请求消息，以实现信令复用，从而降低通信开销，提高通信效率。
第四方面，提供一种反馈指示方法。该方法包括：第二设备接收第四信息，从而根据第四信息，发送第一反馈和/或第二反馈。其中，第四信息用于指示第一设备需要获取第一反馈和/或第二反馈，且第一反馈与第二反馈是不同层级的反馈。
一种可能的设计方案中，第一反馈与第二反馈是不同层级的反馈可以指：第一反馈的发送时机与第二反馈的发送时机不同，或第一反馈的发送对象与第二反馈的发送对象不同。
一种可能的设计方案中，第四信息可以承载在以下至少一项中：感知建立阶段的信令、感知测量阶段的感知请求消息。
此外，第四方面所述的反馈指示方法的技术效果可以参考第三方面所述的反馈指 示方法的技术效果，此处不再赘述。
第五方面，提供一种反馈指示方法。该方法包括：第一设备生成第五信息，以及发送第五信息。其中，第五信息用于指示第二设备确定NDPA的全部配置参数，或者，第五信息用于指示NDPA的一部分配置参数，以及NDPA的另一部分配置参数由第二设备确定。
根据第五方面所述的方法可知，由于NDPA的配置参数可由第一设备和第二设备配合确定，如此，可实现根据业务需求，灵活确定NDPA的配置参数，以便NDPA的配置参数能够满足业务需求。比如，若第一设备的业务对NDPA的配置参数需求，则由第一设备确定NDPA的配置参数。但是，若第二设备的业务对NDPA的配置参数需求，则由第一设备指示第二设备确定NDPA的至少部分配置参数，以满足第二设备的业务需求。
一种可能的设计方案中，第五信息可以承载在如下一项或多项中：感知建立阶段的信令、或感知测量阶段的感知请求消息，以实现信令复用，从而降低通信开销，提高通信效率。
第六方面，提供一种反馈指示方法。该方法包括：第二设备接收第五信息，并解析第五信息。其中，第五信息用于指示第二设备确定NDPA的全部配置参数，或者，第五信息用于指示所述NDPA的一部分配置参数，以及NDPA的另一部分配置参数由第二设备确定。
一种可能的设计方案中，第五信息可以承载在如下一项或多项中：感知建立阶段的信令、或感知测量阶段的感知请求消息。
此外，第六方面所述的反馈指示方法的技术效果可以参考第五方面所述的反馈指示方法的技术效果，此处不再赘述。
第七方面，提供一种反馈指示装置。该反馈指示装置包括：用于执行如第一方面、第三方面或第五方面所述的方法的模块、单元、或手段(means)，该模块、单元、或手段可以通过硬件实现，软件实现，或者通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块或单元。该反馈指示装置可以为上述第一方面、第三方面或第五方面中的第一设备，或者包含上述第一设备的装置，或者上述第一设备中包含的装置，比如芯片。
第八方面，提供一种反馈指示装置。该反馈指示装置包括：用于执行如第二方面、第四方面或第六方面所述的方法的模块、单元、或手段(means)，该模块、单元、或手段可以通过硬件实现，软件实现，或者通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块或单元。该反馈指示装置可以为上述第二方面、第四方面或第六方面中的第二设备，或者包含上述第二设备的装置，或者上述第二设备中包含的装置，比如芯片。
第九方面，提供了一种反馈指示装置，包括：处理器和存储器；该存储器用于存储计算机指令，当该处理器执行该指令时，以使该反馈指示装置执行上述任一方面所述的方法。该反馈指示装置可以为上述第一方面、第三方面或第五方面中的第一设备，或者包含上述第一设备的装置，或者上述第一设备中包含的装置。或者，该反馈指示装置可以为上述第二方面、第四方面或第六方面中的第二设备，或者包含上述第 二设备的装置，或者上述第二设备中包含的装置
第十方面，提供一种通信系统，该通信系统包括上述方面所述的第一设备和上述方面所述的第二设备。
第十一方面，提供一种计算机可读存储介质，用于存储计算机程序，该计算机程序包括用于执行如第一方面至第六方面任一项方法的指令。
第十二方面，提供一种计算机程序，该计算机程序包括用于执行如第一方面至第六方面任一项方法的指令。
附图说明
图1为感知过程的架构示意图一；
图2为感知过程的流程示意图一；
图3为感知过程的流程示意图二；
图4为感知过程的架构示意图二；
图5为本申请实施例提供的通信系统的架构示意图；
图6为本申请实施例提供的反馈指示方法的流程示意图一；
图7为场景A的架构示意图；
图8为本申请实施例提供的反馈指示方法在场景A中的流程示意图一；
图9为本申请实施例提供的反馈指示方法在场景A中的流程示意图二；
图10为本申请实施例提供的反馈指示方法在场景A中的流程示意图三；
图11为本申请实施例提供的反馈指示方法在场景A中的流程示意图四；
图12为场景B的架构示意图；
图13为本申请实施例提供的反馈指示方法在场景B中的流程示意图一；
图14为本申请实施例提供的反馈指示方法在场景B中的流程示意图二；
图15为本申请实施例提供的反馈指示方法在场景B中的流程示意图三；
图16为本申请实施例提供的反馈指示方法在场景B中的流程示意图四；
图17为场景C的架构示意图；
图18为本申请实施例提供的反馈指示方法在场景C中的流程示意图一；
图19为本申请实施例提供的反馈指示方法在场景C中的流程示意图二；
图20为本申请实施例提供的反馈指示方法在场景C中的流程示意图三；
图21为本申请实施例提供的反馈指示方法在场景C中的流程示意图四；
图22为本申请实施例提供的反馈指示方法在场景C中的流程示意图五；
图23为本申请实施例提供的反馈指示方法的流程示意图二；
图24为本申请实施例提供的反馈指示方法在场景A中的流程示意图五；
图25为本申请实施例提供的反馈指示方法在场景B中的流程示意图五；
图26为本申请实施例提供的反馈指示方法在场景C中的流程示意图六；
图27为本申请实施例提供的反馈指示方法的流程示意图三；
图28为本申请实施例提供的应用于发送端的反馈指示装置的结构示意图一；
图29为本申请实施例提供的应用于接收端的反馈指示装置的结构示意图一；
图30为本申请实施例提供的应用于发送端的反馈指示装置的结构示意图二；
图31为本申请实施例提供的应用于接收端的反馈指示装置的结构示意图二；
图32为本申请实施例提供的应用于发送端的反馈指示装置的结构示意图三；
图33为本申请实施例提供的应用于接收端的反馈指示装置的结构示意图三。
具体实施方式
下面介绍本申请实施例所涉及的技术术语。
1、感知过程：
感知过程，或者说感知会话(sensing session)中，可以包括多种角色，如感知发起端(sensing initiator)、感知响应端(sensing responder)、感知发送端(sensing transmitter)以及感知接收端(sensing receiver)。其中，对于一个感知过程而言，感知发起端用于发起该感知过程，感知响应端用于参与感知发起端发起的该感知过程，感知发送端用于在感知过程中发起感知测量，如发送NDP，感知接收端则用于响应感知测量，确定感知测量结果，如CSI，并向感知发起端反馈感知测量结果。可以看出，上述多种角色彼此之间的作用并不冲突，换言之，对于感知过程中的设备而言，一个设备可以具有上述一种或多种角色。比如，感知发起端、感知响应端、感知发送端以及感知接收端可以为同一个设备，或者可以为不同的两个设备。比如图1所示，感知过程中的设备包括：设备A和设备B，其中，设备A可以是为感知发送端的感知发起端，设备B可以是为感知接收端的感知响应端。为便于理解，下面以设备A和设备B为例，具体介绍上述感知过程。
示例性地，图2为上述感知过程的流程示意图，图3为上述感知过程的流程示意图二。
如图2所示，上述感知过程可以包括如下步骤：
S201，设备A和设备B交互信令，以建立感知过程。
在感知建立阶段，设备A和设备B可交互信令，如图3所示，设备A向设备B发送感知建立请求消息，而设备B向设备A发送感知建立接收消息，以告知彼此在感知过程中的角色，如设备A为感知发起端和感知发送端，设备B为感知响应端和感知接收端，从而建立感知过程，或者说建立感知会话。
S202，设备A发送空数据分组通告(null data packet announcement，NDPA)。
如图3所示，建立感知会话后，可进入感知测量阶段，感知测量阶段中，设备A可以在某个时间点，如第一时间点发送NDPA。其中，NDPA用于指示设备A将在第一时间点之后的第二时间点，如与NDPA间隔一个短帧间间隔(short interframe space，SIFS)的下一帧进行感知测量，如发送空数据分组(null data packet，NDP)，以及指示该NDP的配置，如长训练字段(long training field，LTF)，以便设备B可以在第二时间点接收并处理该NDP。
S203，设备A发送NDP。
S204，设备B确定反馈1。
其中，设备B可以根据预先配置的反馈类型(feedback type)，确定需要向设备A发送的反馈(feedback)，如反馈1。其中，反馈类型可以用于确定反馈的内容，包括如下一项或多项：CSI、如压缩的CSI，以及非压缩的CSI、感知测量结果、或NDP。具体而言，若反馈类型包括CSI，则设备B可以根据NDP，确定反馈1，即CSI。若反馈类型包括感知测量结果，则设备B可根据CSI，如当前确定的CSI，以 及历史确定的CSI，确定反馈1，即感知测量结果，如目标物的是否运动、运动类型、是否睡眠等等。若反馈类型包括NDP，则设备B可以根据上述NDP的配置，确定反馈1，即NDP。
S205，设备A发送反馈请求(feedback trigger)消息。
如图3所示，设备A发送NDP后，可进入感知报告阶段。在感知报告阶段中，设备A可以在第三时间点，如与NDP间隔一个SIFS的下一帧发送反馈请求消息。其中，反馈请求消息可以用于指示设备B在第三时间点之后的第四时间点，如与反馈请求消息间隔一个SIFS的下一帧执行反馈，如发送反馈1。
S206，设备B向设备A发送反馈1。
其中，设备B可以在第四时间点，向设备A发送反馈1。反馈1可以包括上述CSI、感知测量结果、或NDP中的一项或多项。如此，设备A可以根据反馈1，获得或者确定该目标物的感知测量结果。
综上，根据图2和图3所示的流程可知，在设备A是为感知发送端的感知发起端，设备B是为感知接收端的感知响应端的情况下，只有一个反馈，如设备B向设备A发送的反馈1，且反馈1的反馈类型是可以确定的，如设备B确定反馈1的反馈类型。因此，也就是说，目前的反馈方式只能确定一个反馈的反馈类型。然而，如果感知过程需要更多数量的设备，或者更多次数的交互，则可能有多个反馈。比如图4所示，若感知过程中的设备在包括上述设备A和设备B的基础上，还包括设备C，且设备A是感知发起端、设备B是为感知发送端的感知响应端、设备C是为感知接收端的感知响应端，则需要两个反馈，如设备B需要向设备A发送一个反馈，如反馈1，设备C需要向设备B发送另一个反馈，如反馈2，但是，若按照目前的反馈方式，则只能确定其中一个反馈，如反馈1的反馈类型，而无法确定另一个反馈，如反馈2的反馈类型。换言之，目前的反馈方式已无法适用于多设备，多交互下的多反馈的场景。
下面将结合附图，对本申请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，例如无线保真(wireless fidelity，WiFi)系统，车到任意物体(vehicle to everything，V2X)通信系统、设备间(device-todevie，D2D)通信系统、车联网通信系统、第4代(4th generation，4G)移动通信系统，如长期演进(long term evolution，LTE)系统、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、第五代(5th generation，5G)移动通信系统，如新空口(new radio，NR)系统，以及未来的通信系统，如第六代(6th generation，6G)移动通信系统等。
本申请将围绕可包括多个设备、组件、模块等的系统来呈现各个方面、实施例或特征。应当理解和明白的是，各个系统可以包括另外的设备、组件、模块等，并且/或者可以并不包括结合附图讨论的所有设备、组件、模块等。此外，还可以使用这些方案的组合。
另外，在本申请实施例中，“示例地”、“例如”等词用于表示作例子、例证或说明。本申请中被描述为“示例”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用示例的一词旨在以具体方式呈现概念。
本申请实施例中，“信息(information)”，“信号(signal)”，“消息(message)”，“信道(channel)”、“信令(singaling)”有时可以混用，应当指出的是，在不强调其区别时，其所要表达的含义是一致的。“的(of)”，“相应的(corresponding，relevant)”和“对应的(corresponding)”有时可以混用，应当指出的是，在不强调其区别时，其所要表达的含义是一致的。
本申请实施例中，有时候下标如W 1可能会笔误为非下标的形式如W1，在不强调其区别时，其所要表达的含义是一致的。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
为便于理解本申请实施例，首先以图5中示出的通信系统为例详细说明适用于本申请实施例的通信系统。示例性地，图5为本申请实施例提供的反馈指示方法所适用的一种通信系统的架构示意图。
如图5所示，该通信系统包括多个设备，如第一设备、第二设备和第三设备。其中，多个设备中的至少一个设备，如第一设备可以确定所有反馈的反馈类型或部分反馈的反馈类型，而剩余反馈，如至少一个设备未确定的反馈类型，可以由其他设备，如多个设备中除第一设备外的设备，如第二设备确定。
具体而言，以第一设备、第二设备和第三设备为例，第二设备可以分别与第一设备和第三设备连接。可选地，第三设备还可以与第一设备连接。此外，第一设备、第二设备和第三设备中，任一个设备可以为网络设备或终端设备，对此不限定。
其中，上述网络设备为位于上述通信系统的网络侧，且具有无线收发功能的设备或可设置于该设备的芯片或芯片系统。该网络设备包括但不限于：无线保真(wireless fidelity，WiFi)系统中的接入点(access point，AP)，如家庭网关、路由器、服务器、交换机、网桥等，演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(baseband unit，BBU)，无线中继节点、无线回传节点、传输点(transmission and reception point，TRP或者transmission point，TP)等，还可以为5G，如，新空口(new radio，NR)系统中的gNB，或，传输点(TRP或TP)，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(distributed unit，DU)、具有基站功能的路边单元(road side unit，RSU)等。
上述终端设备为接入上述通信系统，且具有无线收发功能的终端或可设置于该终端的芯片或芯片系统。该终端设备也可以称为用户装置、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。本申请的实施例中的终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality， VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、车载终端、具有终端功能的RSU等。
需要说明的是，本申请实施例提供的反馈指示方法，可以适用于图5所示的两个或三个设备之间，如第一设备与第二设备之间、第一设备、第二设备与第三设备之间，具体实现可以参考下述方法实施例，此处不再赘述。
应当指出的是，本申请实施例中的方案还可以应用于其他通信系统中，相应的名称也可以用其他通信系统中的对应功能的名称进行替代。
应理解，图5仅为便于理解而示例的简化示意图，该通信系统中还可以包括其他网络设备，和/或，其他终端设备，图5中未予以画出。
其中，本申请提供的反馈指示方法可以包括多个实施例，如第一实施例、第二实施例和第三实施例，下面将结合图6-图24对该反馈指示方法的各个实施例进行具体阐述。
第一实施例：
示例性地，图6为本申请实施例提供的反馈指示方法的流程示意图一。该反馈指示方法可以适用于图5所示的三个设备，如第一设备、第二设备与第三设备之间的通信。其中，第一设备、第二设备与第三设备中的任一设备可以如下一种或多项：感知发起端、感知响应端、感知发送端、或感知接收端。为便于理解，本申请实施例以感知发起端为第一设备、感知发送端和感知响应端为第二设备，或者说第二设备是为感知发送端的感知响应端、感知接收端和感知响应端为第三设备，或者说第三设备是为感知接收端的感知响应端为例，但不限定。
如图6所示，该反馈指示方法可以包括如下步骤：
S601，第一设备生成第一帧。
其中，第一帧可以为帧结构数据，该帧结构数据包括第一信息。第一信息可以用于指示所有反馈的反馈类型或部分反馈的反馈类型，如第一反馈的反馈类型和/或第二反馈的反馈类型。
上述第一反馈和第二反馈可以是一次感知过程产生的反馈，且可以是层级不同的反馈。具体而言，一方面，第一反馈与第二反馈是不同层级的反馈可以指：第一反馈的发送时机与第二反馈的发送时机不同。比如，若第一反馈先于第二反馈发送，则第一反馈可以是第一级反馈，而第二反馈可以是第二级反馈；反之，若第二反馈先于第一反馈发送，则第二反馈可以是第一级反馈，而第一反馈可以是第二级反馈。或者，另一方面，第一反馈与第二反馈是不同层级的反馈可以指：第一反馈的发送对象与第二反馈的发送对象不同。比如，根据上述图5所示的连接关系可知，第一反馈可以为第三设备向第二设备发送的反馈，或者说，为感知接收端的感知响应端向为感知发送端的感知响应端发送的反馈。或者，可选地，在第一设备与第三设备连接的情况下，第一反馈也可以为第三设备向第一设备发送的反馈，或者说，为感知接收端的感知响应端向感知发起端发送的反馈。如此，可以认为第一反馈是第一级反馈。第二反馈可 以为第二设备向第一设备发送的反馈，或者说，为感知发送端的感知响应端向感知发起端发送的反馈。如此，可以认为第二反馈是第二级反馈。
应理解，上述反馈的层级仅为一种示例，不作为限定。比如，若第一设备可以向同一个设备，如第二设备，连续或非连续的发送多个反馈，则多个反馈可以是同一层级，或不同层级的层级。其中，非连续发送是指在第一设备发送多个反馈的过程中，还接收来自其他设备，如第三设备的反馈。又比如，若第一设备向多个设备，如第二设备和第三设备，分别发送反馈，则这些反馈可以是同一层级，或不同层级的层级。此外，反馈的层级也不限于两个层级，可以有更多层级，如三个层级，四个层级等等。
应理解，本申请实施例是以第一反馈和第二反馈为例，但不限定。比如，上述所有反馈还可以包括：第三反馈、第四反馈、第五反馈等等，具体实现可以参考该第一反馈和第二反馈的相关介绍，在此不再赘述。
其中，上述第一反馈的反馈类型可以包括以下至少一种：非压缩的CSI、压缩的CSI、NDP、感知测量结果、由感知发起端确定反馈类型、由感知响应端确定反馈类型、由感知发送端确定反馈类型、或由感知接收端确定反馈类型。或者，可选地，第一反馈的反馈类型还可以包括：由任意设备确定反馈类型，其中，感知测量结果可以是CSI的变化量，或者变化程度是否超过阈值。此外，任意设备可以是以下至少一种：感知发起端、感知响应端、感知发送端、或感知接收端。
由此，可以看出，对于第一反馈而言，第一设备可以根据实际需求，灵活确定第一反馈的反馈类型。比如，若需要提高通信效率，则第一设备可确定第一反馈的反馈类型为压缩的CSI，以降低第一反馈的数据大小，从而可以提高通信效率，降低通信开销。又比如，若需要降低感知测量的时延，则第一设备可确定第一反馈的反馈类型为NDP，以便第一设备根据NDP自行确定感知测量结果，从而避免由其他设备，如感知响应端、感知发送端、或感知接收端确定感知测量结果而造成的时延，以提高测量效率。还比如，若需要降低第一设备的运算负荷，则第一设备可确定反馈类型为感知测量结果，以便第一设备可以接收来自其他设备的感知测量结果，从而无需第一设备自行计算感知测量结果，以降低第一设备的运算负荷。再比如，若其他设备的业务对第一反馈的反馈类型有要求，则第一设备可确定第一反馈的反馈类型为由其他设备确定反馈类型，以便第一反馈能够满足其他设备的业务需求，以提高业务的可靠性和稳定性。
以及，上述第二反馈的反馈类型可以包括以下至少一种：非压缩的CSI、压缩的CSI、NDP、感知测量结果、由感知发起端确定反馈类型、由感知响应端确定反馈类型、由感知发送端确定反馈类型、或由感知接收端确定反馈类型。或者，可选地，第二反馈的反馈类型还可以包括：由任意设备确定反馈类型，其中，任意设备也可以是以下至少一种：感知发起端、感知响应端、感知发送端、或感知接收端。
由此，可以看出，对于第二反馈而言，第一设备也可以根据实际需求，灵活确定第二反馈的反馈类型。比如，若需要提高通信效率，则第一设备可确定第二反馈的反馈类型为压缩的CSI，以降低第二反馈的数据大小，从而可以提高通信效率，降低通信开销。又比如，若需要降低感知测量的时延，则第一设备可确定第二反馈的反馈类 型为NDP，以便第一设备根据NDP自行确定感知测量结果，从而避免由其他设备确定感知测量结果而造成的时延，以提高测量效率。还比如，若需要降低第一设备的运算负荷，则第一设备可确定第二反馈的反馈类型为感知测量结果，以便第一设备可以接收来自其他设备的感知测量结果，从而无需第一设备自行计算感知测量结果，以降低第一设备的运算负荷。再比如，若其他设备的业务对第二反馈的反馈类型有要求，则第一设备可确定第二反馈的反馈类型为由其他设备确定反馈类型，以便第二反馈能够满足其他设备的业务需求，以提高业务的可靠性和稳定性。
进一步地，结合上述第一反馈的各种反馈类型，以及第二反馈的各种反馈类型，第一信息的上述指示方式具体可以为如下任一种方式：
方式1，第一信息只用于指示第一反馈的反馈类型包括以下至少一种：非压缩的CSI、压缩的CSI、NDP、或感知测量结果(以下简称为“第一反馈的具体反馈类型”)，只用于指示第二反馈的反馈类型包括以下至少一种：非压缩的CSI、压缩的CSI、NDP、或感知测量结果(以下简称为“第二反馈的具体反馈类型”)，或者用于指示第一反馈的具体反馈类型和第二设备的具体反馈类型。
方式2，第一信息只用于指示第一反馈的反馈类型为由感知发送端确定反馈类型，即第一反馈的反馈类型由第二设备确定，只用于指示第二反馈的反馈类型为由感知发送端确定反馈类型，即第二反馈的反馈类型由第二设备确定，或者用于指示第一反馈的反馈类型和第二反馈的反馈类型均由第二设备确定。
方式3，第一信息只用于指示第一反馈的反馈为由感知接收端确定反馈类型，即第一反馈的反馈类型由第三设备确定，只用于指示第二反馈的反馈类型为由感知接收端确定反馈类型，即第二反馈的反馈类型由第三设备确定，或者用于指示第一反馈的反馈类型和第二反馈的反馈类型均由第三设备确定。
方式4，第一信息用于指示第一反馈的反馈类型由第二设备确定，以及第二反馈的反馈类型由第三设备确定。
方式5，第一信息用于指示第二反馈的反馈类型由第二设备确定，以及第一反馈的反馈类型由第三设备确定。
方式6，第一信息用于指示第一反馈的具体反馈类型，以及第二反馈的反馈类型由第二设备确定。
方式7，第一信息用于指示第二反馈的具体反馈类型，以及第一反馈的反馈类型由第二设备确定。
方式8，第一信息用于指示第一反馈的具体反馈类型，以及第二反馈的反馈类型由第三设备确定。
方式9，第一信息用于指示第二反馈的具体反馈类型，以及第一反馈的反馈类型由第三设备确定。
方式10，第一信息用于指示第一反馈的具体反馈类型，以及第二反馈的反馈类型为，由感知响应端、感知发送端、以及感知接收端中的任意设备确定反馈类型，即第二反馈的反馈类型由第二设备和第三设备中的任意设备确定。
方式11，第一信息用于指示第一反馈的反馈类型由第二设备确定，以及第二反馈的反馈类型由第二设备和第三设备中的任意设备确定。
方式12，第一信息用于指示第一反馈的反馈类型由第三设备确定，以及第二反馈的反馈类型由第二设备和第三设备中的任意设备确定。
方式13，第一信息用于指示第二反馈的具体反馈类型，以及第一反馈的反馈类型为，由感知响应端、感知发送端、以及感知接收端中的任意设备确定反馈类型，即第一反馈的反馈类型由第二设备和第三设备中的任意设备确定。
方式14，第一信息用于指示第二反馈的反馈类型由第二设备确定，以及第一反馈的反馈类型由第二设备和第三设备中的任意设备确定。
方式15，第一信息只用于指示第一反馈的反馈类型由第二设备和第三设备中的任意设备确定，只用于指示第二反馈的反馈类型由第二设备和第三设备中的任意设备确定，或者，用于指示第一反馈的反馈类型由第二设备和第三设备中的任意设备确定，以及第二反馈的反馈类型由第二设备和第三设备中的任意设备确定。
应指出，第一设备可以根据如下一项或多项：第一设备的状态，如负载，丢包率等、第二设备的状态、第三设备的状态、第一设备的业务需求、第二设备的业务需求、或第三设备的业务需求，确定第一信息的上述多种指示方式，对此不限定。并且，对于不同应用场景，第一信息的指示方式也可以不同。比如，若第一设备的业务对反馈的具体反馈类型有要求，则第一信息可以按业务需求指示具体反馈类型，以满足第一设备的业务要求，确保第一设备的业务可靠性。又比如，若第一设备的业务对反馈的具体反馈类型没有要求，则第一信息可以指示其他设备确定反馈类型，以便反馈能够满足其他设备的业务要求，确保其他设备的业务可靠性。
应理解，在上述方式1-方式3中，如果第一信息只指示第一反馈的具体反馈类型，或者只指示第一反馈的反馈类型由第二设备或第三设备确定，则第二反馈的反馈类型可以是默认确定的，如协议预定义或预配置的，或者第二反馈的反馈类型可以由其他设备，如第二设备或第三设备确定。比如，第二设备或第三设备可以发送信息，用以指示第二反馈的具体反馈类型，或者指示第二反馈的反馈类型由第二设备或第三设备确定，具体实现可以参考下述S603中的相关介绍。同理，如果第一信息只指示第二反馈的具体反馈类型，或者只指示第二反馈的反馈类型由第二设备或第三设备确定，则第一反馈的反馈类型可以是默认确定的，如协议预定义或预配置的，或者第一反馈的反馈类型可以由其他设备，如第二设备或第三设备确定。比如，第二设备或第三设备可以发送信息，用以指示信息可以用于指示第一反馈的具体反馈类型，或者指示第一反馈的反馈类型由第二设备或第三设备确定，具体实现可以参考下述S603中的相关介绍。也就是说，如果第一信息只指示所有反馈中部分反馈的具体反馈类型，或者只指示所有反馈中部分反馈的反馈类型由其他设备确定，则所有反馈中剩余的反馈，即第一信息未指示的反馈，其反馈类型可以是默认确定的，或者由其他设备确定。
还应理解，方式10-方式15中，第一信息用于指示第一反馈的反馈类型由第二设备或第三设备中的任意设备确定，可理解为，第一信息不指示第一反馈的反馈类型，从而与方式1-方式3中，第一信息只用于指示第二反馈的反馈类型，具有相同的指示效果，即指示第一反馈的反馈类型可以是默认确定的，或者由其他设备确定。同理，方式10-方式15中，第一信息用于指示第二反馈的反馈类型由第二设备或第三设备中 的任意设备确定，可理解为，第一信息不指示第二反馈的反馈类型，从而与方式1-方式3中，第一信息只用于指示第一反馈的反馈类型，具有相同的指示效果，即指示第二反馈的反馈类型可以是默认确定的，或者由其他设备确定。但是，由于方式1-方式3中，第一信息只用于指示第一反馈的反馈类型，或者只用于指示第二反馈的反馈类型，较于方式10-方式15中所有反馈的反馈类型都指示的方式，可以减少第一信息携带的指示内容，从而降低第一信息的数据大小，进而降低通信开销，以提高通信效率。
总而言之，对于第一反馈的反馈类型，第一信息可以指示第一反馈的反馈类型包括以下至少一项：非压缩的CSI、压缩的CSI、NDP、或感知测量结果，即第一反馈的具体反馈类型，和/或，第一反馈的反馈类型包括以下至少一项：由感知发起端确定反馈类型、由感知响应端确定反馈类型、由感知发送端确定反馈类型、由感知接收端确定反馈类型、或由其他设备确定反馈类型，即由第二设备、第三设备、或第二设备和第三设备中的任意设备确定。同理，对于第二反馈的反馈类型，第一信息可以指示第二反馈的反馈类型包括以下至少一项：非压缩的CSI、压缩的CSI、NDP、或感知测量结果，即第二反馈的具体反馈类型，和/或，第二反馈的反馈类型包括以下至少一项：由感知发起端确定反馈类型、由感知响应端确定反馈类型、由感知发送端确定反馈类型、由感知接收端确定反馈类型、或由其他设备确定反馈类型，即由第二设备、第三设备、或第二设备和第三设备中的任意设备确定。进一步地，下面以第一反馈和第二反馈为例，对第一信息的指示原理进行介绍。
示例性地，第一信息可以包括一个或多个字段，每个字段可以用于指示所有反馈中对应一个反馈的反馈类型。比如，第一信息包括：第一字段和/或第二字段。其中，第一字段可以指示第一反馈的反馈类型。同理，第二字段可以指示第二反馈的反馈类型。如此一来，如果第一设备只需要指示第一反馈，则可以只发送第一字段，而不发送第二字段。同理，如果第一设备只需要指示第二反馈，则可以只发送第二字段，而不发送第一字段。如此，可以避免发送冗余信息，从而降低通信开销，以提高通信效率。
为便于理解，下面以第一字段为例进行介绍，第二字段的具体实现可以参考下述第一字段的相关介绍。
具体而言，第一字段包括多个比特，如3个-9个比特等，如此，第一字段可以通过由多个比特组成的索引指示第一反馈的反馈类型，或者通过多个比特的比特图，或者说比特位指示第一反馈的反馈类型，下面分别介绍。
A、索引指示：
其中，由于多个比特可以组成不同的索引，且不同的索引可以指示第一反馈的不同反馈类型，比如，下表1所示。
表1
Figure PCTCN2022098192-appb-000001
Figure PCTCN2022098192-appb-000002
其中，根据表1可知，上述索引可以包括5个比特，用以指示上述表1所示的各种反馈类型。如此，第一设备可以遍历表1，以确定第一设备想要指示的反馈类型对应的索引，从而生成包括该索引的第一信息，用以指示第一设备想要指示的反馈类型。
比如，若第一设备想要指示第一反馈的反馈类型为非压缩的CSI，则遍历表1，以生成携带索引00000的第一信息，用以指示第一反馈的反馈类型为非压缩的CSI。
又比如，若第一设备想要指示第一反馈的反馈类型包括非压缩的CSI和感知测量结果，则遍历表1，以生成携带索引00110的第一信息，用以指示第一反馈的反馈类型包括非压缩的CSI和感知测量结果。
再比如，若第一设备想要指示第一反馈的反馈类型由感知发送端(感知发送端为第二设备)确定，则遍历表1，以生成携带索引10001的第一信息，用以指示第一反馈的反馈类型为由感知发送端确定反馈类型。可以看出，这种情况下，由于第二设备和第三设备都是感知响应端，或者说感知响应端有多个，则第一设备不能以第二设备为感知响应端确定索引，需要以第二设备为感知发送端确定索引，以避免误确定和误指示。
应理解，上述表1中各索引的指示方式仅为一种示例，不作为限定。比如，表1中的一个索引也可以指示不同级的多个反馈各自的反馈类型，如指示第一级反馈，如第一反馈的反馈类型为非压缩的CSI，并指示第二级反馈，如第二反馈的反馈类型为压缩的CSI。并且，表1中各索引的取值顺序，即按二进制从小到大的顺序仅为一种示例，不作为限定。比如，表1中的各索引也可以按二进制从大到小的顺序取值，或者随机取值，对此不限定。
需要说明是，上述表1中的指示方式仅为一种示例，不作为限定。比如，第一信息还可以包括多个索引，每个索引用于指示反馈类型，如第一反馈的反馈类型和/或第二反馈的反馈类型，可以由该索引对应的第N个设备确定，N为正整数。第N个设备可以为该索引对应的设备之后的第N个设备，或者说第N跳设备。比如，链路的跳数关系为第一设备→第二设备→第三设备，如果指示第一反馈的反馈类型由第三设备确定，则第一设备向第二设备发送的第一信息，第一信息可以包括第一索引和第二索引，其中，第一索引与第一设备对应，第一索引用于指示第一反馈的反馈类型由第二个设备(第三设备)确定，第二索引与第二设备对应，第二索引用于指示第一反馈的反馈类型由第一个设备(第三设备)确定。如此，第二设备接收到第一信息后，第二设备向第三设备发送的第一信息，第一信息可以只包括第二索引，用以指示第一反馈的反馈类型由第一个设备确定。
应理解，实际应用中，如果不需要指示各种具体反馈类型的组合，则还可以如下表2所示。
表2
索引 反馈类型
0000 非压缩的CSI
0001 压缩的CSI
0010 NDP
0011 感知测量结果
0100 由感知发起端确定反馈类型
0101 由感知响应端确定反馈类型
0110 由感知发送端确定反馈类型
0111 由感知接收端确定反馈类型
1000 由任意设备确定反馈类型/不确定反馈类型
可以看出，表2中的索引为4个比特，相较于表1中的索引为5个比特，表2中索引的数据长度更短，数据量更小，从而可以降低通信开销，以提高通信效率。
还应理解，实际应用中，如果不需要指示各种具体反馈类型的组合，以及反馈类型由哪个设备确定，则可以如下表3所示。
表3
索引 反馈类型
000 非压缩的CSI
001 压缩的CSI
010 NDP
011 感知测量结果
100 由任意设备确定反馈类型/不确定反馈类型
可以看出，相较于表2中的索引为4个比特，表3中索引的数据长度进一步缩短，为3个比特，从而可以进一步降低通信开销，进一步提高通信效率。
B、比特图指示：
其中，第一字段包括多个比特，且每个比特可以指示一种反馈类型，比如，下表 4所示。
表4
Figure PCTCN2022098192-appb-000003
其中，根据表4可知，表4中的比特图可以包括9个比特，9个比特按从左往右的顺序，每个比特都可以用于指示一种反馈类型。比如，第一个比特可以用于指示第一反馈的反馈类型是否包括非压缩的CSI，为1指示包括非压缩的CSI，为0指示不包括非压缩的CSI。第二个比特可以用于指示第一反馈的反馈类型是否包括压缩的CSI，为1指示包括压缩的CSI，为0指示不包括压缩的CSI。第三个比特可以用于指示第一反馈的反馈类型是否包括NDP，为1指示包括NDP，为0指示不包括NDP。以此类推，第九个比特可以用于指示第一信息是否不指示反馈类型，为1指示第一信息不指示第一反馈的反馈类型，为0指示第一信息指示第一反馈的反馈类型。
进一步地，第一设备可以遍历表4，以确定第一设备想要指示的反馈类型对应的比特图，从而生成携带该比特图的第一信息，用以指示第一设备想要指示的反馈类型。
比如，若第一设备想要指示第一反馈的反馈类型为非压缩的CSI，则遍历表1，以生成携带比特图100000000的第一信息，用以指示第一反馈的反馈类型为非压缩的CSI。
又比如，若第一设备想要指示第一反馈的反馈类型包括非压缩的CSI和感知测量结果，则遍历表1，以生成携带比特图100100000的第一信息，用以指示第一反馈的反馈类型包括非压缩的CSI和感知测量结果。
再比如，若第一设备想要指示第一反馈的反馈类型由感知发送端(第二设备为感知发送端)确定，则遍历表1，以生成携带比特图000000100的第一信息，用以指示第一反馈的反馈类型为由感知发送端确定反馈类型。可以看出，这种情况下，由于第二设备和第三设备都是感知响应端，则第一设备不能以第二设备为感知响应端确定比特图，需要以第二设备为感知发送端确定比特图，以避免误确定和误指示。
应理解，实际应用中，如果不需要指示各种具体反馈类型的组合，则可以如下表5所示。
表5
比特图 反馈类型
100000000 非压缩的CSI
010000000 压缩的CSI
001000000 NDP
000100000 感知测量结果
000010000 由感知发起端确定反馈类型
000001000 由感知响应端确定反馈类型
000000100 由感知发送端确定反馈类型
000000010 由感知接收端确定反馈类型
000000001 由任意设备确定反馈类型/不确定反馈类型
可以看出，相较于表4包括21个比特图，表5只包括9个比特图，以便第一设备遍历表5可以更快地确定对应的比特图，从而提高处理效率。
还应理解，实际应用中，如果不需要指示各种具体反馈类型的组合，以及反馈类型由哪个设备确定，则可以如下表6所示。
表6
比特图 反馈类型
10000 非压缩的CSI
01000 压缩的CSI
00100 NDP
00010 感知测量结果
00001 由感知发起端确定反馈类型
可以看出，表6中的比特图为5个比特，相较于表5中的比特图为9个比特，表6中比特图的数据长度更短，数据量更小，从而可以降低通信开销，提高通信效率。
需要指出的是，由于第一反馈可以是第三设备向第二设备发送的反馈，第二反馈可以是第二设备向第一设备发送的反馈，则第二设备在接收到第一反馈后，可以根据第一反馈确定第二反馈。也就是说，第二反馈是在第一反馈的基础上确定的，因此，第一反馈的反馈类型与第二反馈的反馈类型，需要满足第一反馈和第二反馈之间的确定逻辑。比如，在确定逻辑为NDP→CSI→感知测量结果的基础上，若第一反馈的反 馈类型为NDP，则第二反馈的反馈类型可以包括如下一项或多项：NDP、CSI，如压缩的CSI或非压缩的CSI、或测量结果。但是，若第一反馈的反馈类型为CSI，则第二反馈的反馈类型可以包括如下一项或多项：CSI、或测量结果，但不包括NDP。
S602，第一设备发送第一帧，第二设备接收第一帧。
其中，第一帧包括第一信息，该第一信息可以承载在如下一项或多项中：感知建立阶段的信令，如感知建立请求消息，感知建立接收消息、或感知测量阶段的信令，如感知请求(sensing request)消息，以实现信令复用，从而降低通信开销，提高通信效率。
进一步地，第一设备可以发送第一帧，从而第二设备可以接收第一帧。如此，第二设备可以根据第一帧中的第一信息，确定第一反馈的反馈类型和/或第二反馈的反馈类型，具体实现可以参考下述第二种应用场景的相关介绍，在此不再赘述。
可选地，第一种应用场景中，上述第一帧还可以包括：模式指示信息。其中，该模式指示信息可以用于指示第一信息是指示如下任一种：第一反馈的反馈类型、第二反馈的反馈类型、或第一反馈的反馈类型和第二反馈的反馈类型。如此，收端设备，如第二设备可以根据模式指示信息，准确地确定第一信息的指示内容，以避免因误确定第一信息的指示内容而导致误反馈，从而可以提高测量的稳定性。
可选地，第二种应用场景中，S602之后，该反馈指示方法还可以包括：步骤1，第二设备向第三设备发送第二信息和/或第二信息，第三设备接收来自第二设备的第一信息和/或第二信息。
其中，第二信息可以独立指示，也就是说，第二信息指示的内容与第一信息指示的内容彼此独立，可以相同，也可以不同。或者，第二信息也可以配合第一信息进行指示，如第二信息可以用于指示其他反馈的反馈类型，或者指示其他反馈的反馈类型由其他设备确定。其中，其他反馈可以是所有反馈中第一信息未指示的反馈，和/或，第一信息指示由其他设备确定的反馈。
比如，以第一反馈和第二反馈为例，若第一信息未指示第一反馈的反馈类型，或者指示第一反馈的反馈类型包括：由感知发送端(第二设备)确定反馈类型，则第二信息可以指示如下任一项：第一反馈的具体反馈类型(包括以下至少一项：非压缩的CSI、压缩的CSI、NDP、或感知测量结果)、第一反馈的反馈类型由感知接收端确定反馈类型，即第一反馈的反馈类型由第三设备确定、或感知发送端不确定第一反馈的反馈类型(第一反馈的反馈类型由其他设备中的任意设备确定)。和/或，若第一信息未指示第一反馈的反馈类型，或者指示第二反馈的反馈类型包括：由感知发送端(第二设备)确定反馈类型，则第一信息还可以指示如下任一项：第二反馈的反馈类型由感知接收端确定反馈类型，即第二反馈的反馈类型由第三设备确定、或感知发送端(第二设备)不确定第二反馈的反馈类型(第二反馈的反馈类型由其他设备中的任意设备确定)。
应理解，第二信息的具体实现原理可以参考S601中第一信息的相关介绍，在此不再赘述。此外，第二设备发送的第一信息和/或第二信息，可以承载以下至少一项中：感知测量阶段的信令，如NDPA或NDP、或感知报告阶段的信令，如反馈请求消息，从而实现信令复用，以降低通信开销，提高通信效率。
进一步地，根据S601中的相关介绍可知，第一信息的指示方式可以有多种，如上述方式1-方式15，因此，第二设备可以根据上述方式1-方式15中的各种指示方式，确定发送第一信息和/或第二信息，下面具体介绍。
方式1：
第一种实现方式中，若第一信息只用于指示第一反馈的具体反馈类型，则第二反馈的反馈类型可按照协议预定义确定，如感知发送端，即第二设备确定。如此，一方面，第二设备可以根据第一信息，向第三设备转发第一信息(包括上述第一字段和第二字段)，或者只发送第一字段，而不发送第二字段，用以指示第一反馈的反馈类型。另一方面，第二设备可以根据第二设备状态，和/或，第二设备的业务需求，确定第二反馈的具体反馈类型，或者第二反馈的反馈类型为由感知接收端确定反馈类型，即第二反馈的反馈类型由第三设备确定，从而向第三设备发送第二信息，用以指示第二反馈的反馈类型由第三设备确定。也就是说，这种情况下，第二设备可以向第三设备发送第一信息和第二信息。其中，第一信息和第二信息可以打包发送，或者分开发送，对此不限定。
第二种实现方式中，若第一信息只用于指示第二反馈的具体反馈类型(包括以下至少一项：非压缩的CSI、压缩的CSI、NDP、或感知测量结果)，则第一反馈的反馈类型可按照协议预定义确定，如第二设备确定。如此，第二设备可以根据第二设备状态，和/或，第二设备的业务需求，确定第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备确定，从而向第三设备发送第二信息，用以指示第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备确定。
第三种实现方式中，第一信息用于指示第一反馈的具体反馈类型和第二设备的具体反馈类型。如此，第二设备可以根据第一信息，向第三设备转发第一信息，或者只发送第一字段，而不发送第二字段，用以指示第一反馈的具体反馈类型。
方式2：
第四种实现方式中，第一信息只用于指示第一反馈的反馈类型由第二设备确定。如此，一方面，第二设备可以根据第一信息，确定第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备确定，从而向第三设备发送第二信息，用以指示第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备确定。另一方面，对于第一信息未指示的第二反馈，根据上述第一种实现方式中的相关介绍可知，第二设备可以向第三设备发送第二信息，用以指示第二反馈的反馈类型由第三设备确定。也就是说，这种情况下，第二信息可以用于指示第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备确定，可选地，还可以用于指示第二反馈的反馈类型由第三设备确定。
第五种实现方式中，第一信息只用于指示第二反馈的反馈类型由第二设备确定。如此，一方面，第二设备可以根据第一信息，确定第二反馈的具体反馈类型，或者第二反馈的反馈类型由第三设备确定，从而向第三设备发送第二信息，用以指示第二反馈的反馈类型由第三设备确定。另一方面，对于第一信息未指示的第一反馈，根据上述第二种实现方式中的相关介绍可知，第二设备可以向第三设备发送第二信息，用以指示第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备确定。也就是 说，这种情况下，第二信息可以用于指示第二反馈的反馈类型由第三设备确定，可选地，还可以用于指示第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备确定。
第六种实现方式中，第一信息用于指示第一反馈的反馈类型和第二反馈的反馈类型均由第二设备确定。如此，第二设备可以根据第一信息，确定第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备确定。以及，第二设备还可以根据第一信息，确定第二反馈的具体反馈类型，或者第二反馈的反馈类型由第三设备确定。从而，第二设备可以向第三设备发送第二信息，用以指示第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备确定，可选地，还用以指示第二反馈的反馈类型由第三设备确定。
方式3：
第七种实现方式中，第一信息只用于指示第一反馈的反馈类型由第三设备确定。如此，一方面，第二设备可以根据第一信息，向第三设备转发第一信息，或者只发送第一字段，而不发送第二字段，用以指示第一反馈的反馈类型由第三设备确定。另一方面，对于第一信息未指示的第二反馈，根据上述第一种实现方式中的相关介绍可知，第二设备可以向第三设备发送第二信息，用以指示第二反馈的反馈类型由第三设备确定。
第八种实现方式中，第一信息只用于指示第二反馈的反馈类型由第三设备确定。如此，一方面，第二设备可以根据第一信息，向第三设备转发第一信息，或者只发送第二字段，而不发送第一字段，用以指示第二反馈的反馈类型由第三设备确定。另一方面，对于第一信息未指示的第一反馈，根据上述第二种实现方式中的相关介绍可知，第二设备可以向第三设备发送第二信息，用以指示第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备确定。
第九种实现方式中，第一信息用于指示第一反馈的反馈类型和第二反馈的反馈类型均由第三设备确定。如此，第二设备可以根据第一信息，向第三设备转发第一信息，用以指示第一反馈的反馈类型和第二反馈的反馈类型均由第三设备确定。
方式4：
第一信息用于指示第一反馈的反馈类型由第二设备确定，以及第二反馈的反馈类型由第三设备确定。如此，一方面，第二设备可以根据第一信息，确定第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备，从而向第三设备发送第二信息，用以指示第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备。另一方面，第二设备可以根据第一信息，向第三设备转发第一信息，或者只发送第二字段，而不发送第一字段，用以指示第二反馈的反馈类型由第三设备确定。
方式5：
第一信息用于指示第二反馈的反馈类型由第二设备确定，以及第一反馈的反馈类型由第三设备确定。如此，一方面，第二设备可以根据第一信息，确定第二反馈的具体反馈类型，或者第二反馈的反馈类型由第三设备确定，从而向第三设备发送第二信息，用以指示第二反馈的反馈类型由第三设备确定。另一方面，第二设备可以根据第一信息，向第三设备转发第一信息，或者只发送第一字段，而不发送第二字段，用以 指示第一反馈的反馈类型由第三设备确定。
方式6：
第一信息用于指示第一反馈的具体反馈类型，以及第二反馈的反馈类型由第二设备确定。如此，一方面，第二设备可以根据第一信息，向第三设备转发第一信息，或者只发送第一字段，而不发送第二字段，用以指示第一反馈的具体反馈类型。另一方面，第二设备可以根据第一信息，确定第二反馈的具体反馈类型，或者第二反馈的反馈类型由第三设备确定，从而向第三设备发送第二信息，用以指示第二反馈的反馈类型由第三设备确定。
方式7：
第一信息用于指示第二反馈的具体反馈类型，以及第一反馈的反馈类型由第二设备确定。如此，第二设备可以根据第一信息，确定第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备确定，从而向第三设备发送第二信息，用以指示第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备确定。
方式8：
第一信息用于指示第一反馈的具体反馈类型，以及第二反馈的反馈类型由第三设备确定。如此，第二设备可以根据第一信息，向第三设备转发第一信息，用以指示第一反馈的具体反馈类型，以及第二反馈的反馈类型由第三设备确定。
方式9：
第一信息用于指示第二反馈的具体反馈类型，以及第一反馈的反馈类型由第三设备确定。如此，第二设备可以根据第一信息，向第三设备转发第一信息，或者只发送第一字段，而不发送第二字段，用以指示第一反馈的反馈类型由第三设备确定。
方式10：
第一信息用于指示第一反馈的具体反馈类型，以及第二反馈的反馈类型由第二设备和第三设备中的任意设备确定。如此，一方面，第二设备可以根据第一信息，向第三设备转发第一信息，或者只发送第一字段，而不发送第二字段，用以指示第一反馈的具体反馈类型。另一方面，第二设备可以根据第一信息，确定第二反馈的具体反馈类型、第二反馈的反馈类型由第三设备确定、或者第二设备不确定第二反馈的反馈类型。其中，若第二反馈的反馈类型由第三设备确定，或者第二设备不确定第二反馈的反馈类型，则第二设备还可以向第三设备发送第二信息，用以指示第二反馈的反馈类型由第三设备确定，或者第二设备不确定第二反馈的反馈类型。
方式11：
第一信息可以用于指示第一反馈的反馈类型由第二设备确定，以及第二反馈的反馈类型由第二设备和第三设备中的任意设备确定。如此，一方面，第二设备可以根据第一信息，确定第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备确定，从而向第三设备发送第二信息，用以指示第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备确定。另一方面，对于第二反馈，根据第二种应用场景中方式10的相关介绍可知，第二设备可以向第三设备发送第二信息，用以指示第二反馈的反馈类型由第三设备确定，或者第二设备不确定第二反馈的反馈类型。换言之，这种情况下，第二信息可以用于指示第一反馈的具体反馈类型，或者第一反馈的反馈类 型由第三设备确定，可选地，还可以用于指示第二反馈的反馈类型由第三设备确定，或者第二设备不确定第二反馈的反馈类型。
方式12：
第一信息用于指示第一反馈的反馈类型由第三设备确定，以及第二反馈的反馈类型由第二设备和第三设备中的任意设备确定。如此，一方面，第二设备可以根据第一信息，向第三设备转发第一信息，或者只发送第一字段，而不发送第二字段，用以指示第一反馈的反馈类型由第三设备确定。另一方面，对于第二反馈，根据第二种应用场景中方式10的相关介绍可知，第二设备可以向第三设备发送第二信息，用以指示第二反馈的反馈类型由第三设备确定，或者第二设备不确定第二反馈的反馈类型。
方式13：
第一信息用于指示第二反馈的具体反馈类型，以及第一反馈的反馈类型由第二设备和第三设备中的任意设备确定。如此，第二设备可以根据第一信息，确定第一反馈的具体反馈类型、第一反馈的反馈类型由第三设备确定、或者第二设备不确定第一反馈的反馈类型，从而向第三设备发送第二信息，用以指示第一反馈的具体反馈类型、第一反馈的反馈类型由第三设备确定、或者第二设备不确定第一反馈的反馈类型。
方式14：
第一信息用于指示第二反馈的反馈类型由第二设备确定，以及第一反馈的反馈类型由第二设备和第三设备中的任意设备确定。如此，一方面，第二设备可以根据第一信息，确定第二反馈的具体反馈类型，或者第二反馈的反馈类型由第三设备确定，从而向第三设备发送第二信息，用以指示第二反馈的反馈类型由第三设备确定。另一方面，对于第一反馈，根据第二种应用场景中方式13的相关介绍可知，第二设备可以向第三设备发送第二信息，用以指示第一反馈的具体反馈类型、第一反馈的反馈类型由第三设备确定、或者第二设备不确定第一反馈的反馈类型。换言之，这种情况下，第二信息可以用于指示第一反馈的具体反馈类型、第一反馈的反馈类型由第三设备确定、或者第二设备不确定第一反馈的反馈类型，可选地，还用于指示第二反馈的反馈类型由第三设备确定。
方式15：
第十种实现方式中，第一信息只用于指示第一反馈的反馈类型由第二设备和第三设备中的任意设备确定。如此，一方面，对于第一反馈，根据第二种应用场景中方式13的相关介绍可知，第二设备可以向第三设备发送第二信息，用以指示第一反馈的具体反馈类型、第一反馈的反馈类型由第三设备确定、或者第二设备不确定第一反馈的反馈类型。另一方面，对于第一信息未指示的第二反馈，根据上述第一种实现方式中的相关介绍可知，第二设备可以向第三设备发送第二信息，用以指示第二反馈的反馈类型由第三设备确定。也就是说，这种情况下，第二信息可以用于指示第一反馈的具体反馈类型、第一反馈的反馈类型由第三设备确定、或者第二设备不确定第一反馈的反馈类型，可选地，还可以用于指示第二反馈的反馈类型由第三设备确定。
第十一种实现方式中，第一信息只用于指示第二反馈的反馈类型由第二设备和第三设备中的任意设备确定。如此，一方面，对于第二反馈，根据第二种应用场景中方式10的相关介绍可知，第二设备可以向第三设备发送第二信息，用以指示第二反馈 的反馈类型由第三设备确定，或者第二设备不确定第二反馈的反馈类型。另一方面，对于第一信息未指示的第一反馈，根据上述第二种实现方式中的相关介绍可知，第二设备可以向第三设备发送第二信息，用以指示第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备确定。也就是说，这种情况下，第二信息可以用于指示第二反馈的反馈类型由第三设备确定，或者第二设备不确定第二反馈的反馈类型，可选地，还可以用于指示第一反馈的具体反馈类型，或者第一反馈的反馈类型由第三设备确定。
第十二种实现方式中，第一信息用于指示第一反馈的反馈类型由第二设备和第三设备中的任意设备确定，以及第二反馈的反馈类型由第二设备和第三设备中的任意设备确定。如此，第一反馈的具体实现可以参考上述第十种实现方式，第二反馈的具体实现可以参考上述第十一种实现方式。
可以看出，在上述第二种应用场景的方式1-方式15中，如果第二设备只需要指示第一反馈的反馈类型，则第二设备可以只发送第一字段，而不发送第二字段。同理，如果第二设备只需要指示第二反馈的反馈类型，则第二设备可以只发送第二字段，而不发送第一字段。如此，可以避免发送冗余信息，从而降低通信开销，以提高通信效率。
可选地，结合上述第二种应用场景中，第二种应用场景中，步骤1之后，该反馈指示方法还可以包括：步骤2，第三设备向第二设备发送第三信息，第二设备接收来自第三设备的第三信息。
其中，所述第三信息可以用于指示第二反馈的反馈类型包括如下至少一项：非压缩的CSI、压缩的CSI、NDP、或感知测量结果，即指示第二反馈的具体反馈类型，可以承载在感知报告阶段的信令，如上述第一反馈中，以实现信令复用，降低通信开销，提高通信效率。
具体而言，结合上述S601和上述第二种应用场景的方式1-方式15中的相关介绍可知，如果第二设备向第三设备发送的第一信息和/或第二信息，用于指示第二反馈的反馈类型由第三设备确定，则第三设备可以根据第三设备状态，和/或，第三设备的业务需求，确定第二反馈的具体反馈类型，从而向第二设备发送第三信息，用以指示第二反馈的具体反馈类型。此外，如果第二设备向第三设备发送的第一信息和/或第二信息，还用于指示第一反馈的反馈类型由第三设备确定，则第三设备还可以根据第三设备状态，和/或，第三设备的业务需求，确定第一反馈的具体反馈类型。
应理解，上述S601-S602，以及上述第一种应用场景-第三种应用场景为第一设备、第二设备与第三设备之间的一种交互示例，不作为限定。比如，也可以由第二设备生成第一信息，并向第一设备和第三设备发送第一信息。又比如，还可以由第三设备生成第一信息，并向第二设备发送第一信息，以由第二设备向第一设备发送第一信息。
以上结合图6详细说明了本申请实施例提供的反馈指示方法的整体流程，以下结合图7-图22，详细说明图6所示的反馈指示方法在场景A-场景C下的流程。
场景A：
示例性地，图7为场景A的架构示意图，图8为场景A中反馈指示方法的流程 示意图一。如图7和图8所示，执行该方法的设备可以包括：第一设备和第二设备。其中，第一设备可以是为感知接收端的感知发起端。第二设备可以是为感知发送端的感知响应端，且可以是一个或多个。如此，该反馈指示方法可以包括两级反馈，一级反馈为第一设备向第二设备发送的第一反馈，另一级反馈为第二设备向第一设备发送的第二反馈。在此情况下，反馈类型可以有三种确定方式(确定方式1-3)，其中，确定方式1：第一设备确定第一反馈和第二反馈的具体反馈类型。确定方式2：第一设备确定第一反馈的具体反馈类型，第二设备确定第二反馈的具体反馈类型。确定方式3：第一设备确定第二反馈的具体反馈类型，第二设备确定第一反馈的具体反馈类型。下面具体介绍上述确定方式1-3各自对应的流程。
确定方式1：
其中，图9为场景A中反馈指示方法的流程示意图二，如图9所示，以感知测量阶段和感知报告阶段为例，该反馈指示方法的步骤可以包括：
S901，第一设备向第二设备发送感知请求消息，第二设备接收来自第一设备的感知请求消息。
其中，该感知请求消息可以包括上述第一信息。其中，第一信息包括第一字段和第二字段，第一字段可以用于指示第一反馈的具体反馈类型，如为CSI，第二字段可以用于指示第二反馈的具体反馈类型，如为感知测量结果，具体实现可以参考上述S601-S602中的相关介绍，在此不再赘述。
可选地，该感知请求消息还可以包括上述模式指示信息，具体实现可以参考上述第一种应用场景中的相关介绍，在此不再赘述。
S902，第二设备发送NDPA。
如图8所示，第二设备接收到感知请求消息后，可以根据感知请求消息，发送NDPA，如在接收到感知请求消息后，经过一个SIFS再发送NDPA。此外，NDPA的具体实现可以参考上述S202的相关介绍，在此不再赘述。
S903，第二设备发送NDP。
如图8所示，第二设备可以在发送NDPA后，经过一个SIFS再发送NDP。
需要指出，第二设备发送的NDPA，以及NDP中，可以携带上述第一信息，也可以不携带第一信息，对此不限定。
S904，第一设备向第二设备发送第一反馈，第二设备接收来自第一设备的第一反馈。
其中，第一设备可以根据第一字段指示的具体反馈类型，确定第一反馈，如CSI。
此外，如图8所示，由于第一设备不仅为感知发起端，也为感知接收端，故第一设备可以向第二设备，即为感知发送端的感知响应端发送第一反馈，如在发送NDP后，经过一个SIFS再发送第一反馈。
S905，第二设备向第一设备发送第二反馈，第一设备接收来自第二设备的第二反馈。
如图8所示，第二设备可以根据上述第二字段指示的具体反馈类型，如为感知测量结果，以及第一反馈，如CSI，确定第二反馈，如感知测量结果，具体实现可以参 考上述第二种应用场景中的相关介绍，在此不再赘述。如此，第二设备在接收到第一反馈后，可以经过一个SIFS再向第二设备发送第二反馈。
确定方式2：
其中，图10为场景A中反馈指示方法的流程示意图三，如图10所示，以感知测量阶段和感知报告阶段为例，该反馈指示方法的步骤可以包括：
S1001，第一设备向第二设备发送感知请求消息，第二设备接收来自第一设备的感知请求消息。
其中，该感知请求消息可以包括上述第一信息中的第一字段，该第一字段可以用于指示第一反馈的具体反馈类型，如为CSI，具体实现可以参考上述S601-S602中的相关介绍，在此不再赘述。
可选地，该感知请求消息还可以包括上述模式指示信息，具体实现可以参考上述第一种应用场景中的相关介绍，在此不再赘述。
S1002，第二设备发送NDPA。
S1003，第二设备发送NDP。
其中，S1002的具体实现可以参考上述S202和S902的相关介绍，S1003的具体实现可以参考上述S202和S903的相关介绍，在此不再赘述。
S1004，第一设备向第二设备发送第一反馈，第二设备接收来自第一设备的第一反馈。
如图8所示，第一设备可以根据第一字段指示的具体反馈类型，确定第一反馈，如CSI，以便在发送NDP后，经过一个SIFS再向第二设备发送第一反馈。
其中，第一反馈可以包括上述第一信息中的第二字段，用以指示第二反馈的反馈类型由第二设备确定，具体实现可以参考上述S601-S602中的相关介绍，在此不再赘述。
换言之，第一反馈和第二反馈可以分开指示，如通过感知请求消息指示第一反馈，通过第一反馈指示第二反馈，以避免因单次发送的数据包过大而导致丢包，从而可以提高通信的可靠性。
应理解，上述分开指示的方式仅为一种示例，不作为限定，比如，第一反馈和第二反馈也可以合并指示，如感知请求消息也可以包括第一字段和第二字段。
S1005，第二设备根据第一信息，确定第二反馈的具体反馈类型。
其中，第二设备可以根据第一信息中的第二字段，确定第二反馈的具体反馈类型，如为感知测量结果，具体实现可以参考上述第二种应用场景中的相关介绍，在此不再赘述。如此，第二设备可以根据接收到的第一反馈，如CSI，以及第二反馈的具体反馈类型，确定第二反馈，即感知测量结果。
S1006，第二设备向第一设备发送第二反馈，第一设备接收来自第二设备的反馈。
如图8所示，第二设备可以在接收到第一反馈后，经过一个SIFS再向第二设备发送第二反馈。
确定方式3：
其中，图11为场景A中反馈指示方法的流程示意图四，如图11所示，以感知 测量阶段和感知报告阶段为例，该反馈指示方法的步骤可以包括：
S1101，第一设备向第二设备发送感知请求消息，第二设备接收来自第一设备的感知请求消息。
其中，该感知请求消息可以包括上述第一信息中第一字段和第二字段。其中，该第一字段可以用于指示第一反馈的反馈类型由第二设备确定，该第二字段可以用于指示第二反馈的具体反馈类型，如为感知测量结果，具体实现可以参考上述S601-S602中的相关介绍，在此不再赘述。
可选地，该感知请求消息还可以包括上述模式指示信息，具体实现可以参考上述第一种应用场景中的相关介绍，在此不再赘述。
S1102，第二设备根据第一信息，确定第一反馈的具体反馈类型。
其中，第二设备接收到感知请求消息后，可以根据第一信息中的第一字段，确定第一反馈的具体反馈类型，如为CSI，具体实现可以参考上述第二种应用场景中的相关介绍，在此不再赘述。
S1103，第二设备发送NDPA。
S1104，第二设备发送NDP。
其中，上述第二信息可以承载在第二设备发送的NDPA中，用以指示第一反馈的具体反馈类型，但不限定，如还可以承载在NDP中。换言之，S1102在S1104之前执行即可。
此外，S1103-S1104的具体实现可以参考上述S202、S902-S903的相关介绍，在此不再赘述。
S1105，第一设备向第二设备发送第一反馈，第二设备接收来自第一设备的第一反馈。
如图8所示，第一设备可以根据上述第二信息指示的具体反馈类型，确定第一反馈，如CSI，以便在发送NDP后，经过一个SIFS再发送第一反馈。
S1106，第二设备向第一设备发送第二反馈，第一设备接收来自第二设备的反馈。
如图8所示，第二设备可以根据上述第二字段指示的具体反馈类型，如为感知测量结果，以及第一反馈，如CSI，确定第二反馈，即感知测量结果，具体实现可以参考上述第二种应用场景中的相关介绍，在此不再赘述。如此，第二设备在接收到第一反馈后，可以经过一个SIFS再发送第二反馈。
应理解，在上述场景A中，除上述确定方式A-C外，还可以有其他的确定方式，如第二设备确定第一反馈的具体反馈类型和第二反馈的具体反馈类型，具体实现可以参考上述确定方式A-C中的相关介绍，在此不再赘述。
场景B：
示例性地，图12为场景B的架构示意图，图13为场景B中反馈指示方法的流程示意图一。如图12和图13所示，执行该方法的设备可以包括：第一设备、第二设备和第三设备。其中，第二设备与第一设备和第三设备连接，以及，可选地，第三设备可以与第一设备连接。第一设备可以是感知发起端，第二设备可以是为感知发送端的感知响应端，第三设备可以是为感知接收端的感知响应端，且第二设备和第三设备 都可以是一个或多个。如此，该反馈指示方法可以包括两级反馈，一级反馈为第三设备向第一设备或第二设备发送的第一反馈，另一级反馈为第二设备向第一设备发送的第二反馈。在此情况下，可以有三种确定方式(确定方式4-6)，其中，确定方式4：第一设备确定第一反馈的具体反馈类型和第二反馈的具体反馈类型。确定方式5：第一设备确定第一反馈的具体反馈类型，第二设备确定第二反馈的具体反馈类型。确定方式6：第一设备确定第二反馈的具体反馈类型，第二设备确定第一反馈的具体反馈类型。下面具体介绍上述确定方式4-6各自对应的流程。
确定方式4：
其中，图14为场景B中反馈指示方法的流程示意图二，如图14所示，以感知测量阶段和感知报告阶段为例，该反馈指示方法的步骤可以包括：
S1401，第一设备向第二设备发送感知请求消息，第二设备接收来自第一设备的感知请求消息。
其中，该感知请求消息可以包括上述第一信息。其中，第一信息可以包括第一字段和第二字段，第一字段可以用于指示第一反馈的具体反馈类型，如为CSI，第二字段可以用于指示第二反馈的具体反馈类型，如为感知测量结果，具体实现可以参考上述S601-S602中的相关介绍，在此不再赘述。
可选地，该感知请求消息还可以包括上述模式指示信息，具体实现可以参考上述第一种应用场景中的相关介绍，在此不再赘述。
S1402，第二设备发送NDPA。
如图13所示，第二设备接收到感知请求消息后，可以根据感知请求消息，经过一个SIFS再发送NDPA，具体实现可以参考上述S202的相关介绍，在此不再赘述。
S1403，第二设备发送NDP。
如图13所示，第二设备可以在发送NDPA后，经过一个SIFS再发送NDP。
S1404，第二设备发送反馈请求消息。
如图13所示，第二设备可以在发送NDP后，经过一个SIFS再发送反馈请求消息，反馈请求消息的具体实现可以参考上述S205中的相关介绍。
S1405，第三设备向第二设备发送第一反馈，第三设备接收来自第二设备的第一反馈。
S1406，第三设备向第一设备发送第一反馈，第三设备接收来自第一设备的第一反馈。
其中，第一设备可以根据第一字段指示的具体反馈类型，确定第一反馈，如CSI。
此外，S1405和S1406为可选步骤。具体而言，如图13所示，一方面，如果第三设备未直接与第一设备连接，则第三设备可以向第二设备发送第一反馈，如接收到NDP后，经过一个SIFS再发送第一反馈，即执行S1405。或者，另一方面，如果第三设备直接与第一设备连接，则第三设备可以向第一设备发送第一反馈，即执行S1406。
S1407，第二设备向第一设备发送第二反馈，第一设备接收来自第二设备的第二反馈。
如图13所示，第二设备可以根据上述第二字段指示的具体反馈类型，如为感知测量结果，以及第一反馈，如CSI，确定第二反馈，即感知测量结果，具体实现可以参考上述第二种应用场景中的相关介绍，在此不再赘述。如此，第二设备在接收到第一反馈后，可以经过一个SIFS再发送第二反馈。
确定方式5：
其中，图15为场景B中反馈指示方法的流程示意图三，如图15所示，以感知测量阶段和感知报告阶段为例，该反馈指示方法的步骤可以包括：
S1501，第一设备向第二设备发送感知请求消息，第二设备接收来自第一设备的感知请求消息。
其中，该感知请求消息可以包括上述第一信息中的第一字段和第二字段。其中，该第一字段可以用于指示第一反馈的具体反馈类型，如为CSI，该第二字段可以用于指示第二反馈的反馈类型由第二设备确定，具体实现可以参考上述S601-S602中的相关介绍，在此不再赘述。
可选地，该感知请求消息还可以包括上述模式指示信息，具体实现可以参考上述第一种应用场景中的相关介绍，在此不再赘述。
S1502，第二设备发送NDPA。
S1503，第二设备发送NDP。
S1504，第二设备发送反馈请求消息。
其中，上述第一信息(包括第一字段和第二字段)，或者只有第一信息中的第一字段，承载在第二设备发送的NDPA中，用以指示第一反馈的具体反馈类型，但不限定，如还可以承载在第二设备发送的NDP、以及反馈请求消息中。
此外，S1502-S1504的具体实现可以参考上述S202、S205、S1402-S1404中的相关介绍，在此不再赘述。
S1505，第三设备向第二设备发送第一反馈，第三设备接收来自第二设备的第一反馈。
S1506，第三设备向第一设备发送第一反馈，第三设备接收来自第一设备的第一反馈。
其中，第一设备可以根据第一字段指示的具体反馈类型，确定第一反馈，如CSI。
此外，S1505和S1506为可选步骤，具体实现可以参考上述S1405和S1406中的相关介绍，在此不再赘述。
S1507，第二设备根据第一信息，确定第二反馈的具体反馈类型。
其中，第二设备可以根据第一信息中的第二字段，确定第二反馈的具体反馈类型，如为感知测量结果，具体实现可以参考上述第二种应用场景中的相关介绍，在此不再赘述。如此，第二设备可以根据接收到的第一反馈，如CSI，以及第二反馈的具体反馈类型，确定第二反馈，即感知测量结果。
需要指出，S1507与S1502-S1506之间的执行顺序不限定。
S1508，第二设备向第一设备发送第二反馈，第一设备接收来自第二设备的第二反馈。
其中，S1508的具体实现，可以参考上述S1407中的相关介绍，在此不再赘述。
确定方式6：
其中，图16为场景B中反馈指示方法的流程示意图四，如图16所示，以感知测量阶段和感知报告阶段为例，该反馈指示方法的步骤可以包括：
S1601，第一设备向第二设备发送感知请求消息，第二设备接收来自第一设备的感知请求消息。
其中，该感知请求消息可以包括上述第一信息中的第一字段和第二字段。其中，该第一字段可以用于指示第一反馈的反馈类型由第二设备确定，该第二字段可以用于指示第二反馈的具体反馈类型，如为感知测量结果，具体实现可以参考上述S601-S602中的相关介绍，在此不再赘述。
可选地，该感知请求消息还可以包括上述模式指示信息，具体实现可以参考上述第一种应用场景中的相关介绍，在此不再赘述。
S1602，第二设备根据第一信息，确定第一反馈的具体反馈类型。
其中，第二设备接收到感知请求消息后，可以根据第一信息中的第一字段，确定第一反馈的具体反馈类型，如为CSI，具体实现可以参考上述第二种应用场景中的相关介绍，在此不再赘述。
S1603，第二设备发送NDPA。
S1604，第二设备发送NDP。
S1605，第二设备发送反馈请求消息。
其中，上述第二信息可以承载在第二设备发送的NDPA中，用以指示第一反馈的具体反馈类型，但不限定，如还可以承载在第二设备发送的NDP、以及反馈请求消息中。也就是说，S1602在S1605之前执行即可。
此外，S1603-S1605的具体实现可以参考上述S202、S205、S1402-S1404中的相关介绍，在此不再赘述。
S1606，第三设备向第二设备发送第一反馈，第三设备接收来自第二设备的第一反馈。
S1607，第三设备向第一设备发送第一反馈，第三设备接收来自第一设备的第一反馈。
其中，第一设备可以根据第一字段指示的具体反馈类型，确定第一反馈，如CSI，具体实现可以参考上述第二种应用场景中的相关介绍，在此不再赘述。
此外，S1606和S1607为可选步骤，具体实现可以参考上述S1405和S1406中的相关介绍，在此不再赘述。
S1608，第二设备向第一设备发送第二反馈，第一设备接收来自第二设备的第二反馈。
其中，S1608的具体实现，可以参考上述S1407中的相关介绍，在此不再赘述。
应理解，在上述场景B中，除上述确定方式4-6外，还可以有其他的确定方式，如第二设备确定第一反馈的具体反馈类型和第二反馈的具体反馈类型，以及第二设备确定第一反馈的具体反馈类型，第三设备确定第二反馈的具体反馈类型等等，具体实现可以参考上述确定方式4-6中的相关介绍，在此不再赘述。
场景C：
示例性地，图17为场景C的架构示意图，图18为场景C中反馈指示方法的流程示意图一。如图17和图18所示，执行该方法的设备可以包括：第一设备、第二设备和第三设备。其中，第二设备与第一设备和第三设备连接，第一设备可以是感知发起端，第二设备可以是为感知接收端的感知响应端，第三设备可以是为感知发送端的感知响应端，且第二设备和第三设备都可以是一个或多个。如此，该反馈指示方法可以包括三级反馈，第一级反馈为第二设备向第三设备发送的第一反馈，第二级反馈为第三设备向第二设备发送的第二反馈，第三级反馈为第二设备向第一设备发送的第三反馈。在此情况下，可以有四种确定方式(确定方式7-10)，其中，确定方式7：第一设备确定第一反馈的具体反馈类型、第二反馈的具体反馈类型、以及第三反馈的具体反馈类型。确定方式8：第一设备确定第一反馈的具体反馈类型和第二反馈的具体反馈类型，第二设备确定第三反馈的具体反馈类型。确定方式9：第一设备确定第一反馈的具体反馈类型和第三反馈的具体反馈类型，第二设备确定第二反馈的具体反馈类型。确定方式10：第一设备确定第二反馈的具体反馈类型和第三反馈的具体反馈类型，第三设备确定第一反馈的具体反馈类型。下面具体介绍上述确定方式7-10各自对应的流程。
确定方式7：
其中，图19为场景C中反馈指示方法的流程示意图二，如图19所示，以感知测量阶段和感知报告阶段为例，该反馈指示方法的步骤可以包括：
S1901，第一设备向第二设备发送感知请求消息，第二设备接收来自第一设备的感知请求消息。
其中，该感知请求消息可以包括上述第一信息。其中，第一信息可以包括第一字段、第二字段、以及第三字段。第一字段可以用于指示第一反馈的具体反馈类型，如为非压缩的CSI，第二字段可以用于指示第二反馈的具体反馈类型，如为压缩的CSI，第三字段可以用于指示第三反馈的具体反馈类型，如为感知测量结果，具体实现可以参考上述S601-S602中的相关介绍，在此不再赘述。
可选地，该感知请求消息还可以包括上述模式指示信息，具体实现可以参考上述第一种应用场景中的相关介绍，在此不再赘述。
S1902，第二设备向第三设备发送感知请求消息，第三设备接收来自第二设备的感知请求消息。
如图18所示，由于第二设备为感知接收端，第三设备为感知发送端，则第二设备需要向第三转发该感知请求消息，如接收到感知请求消息后，经过一个SIFS再发送感知请求消息。其中，第二设备转发的感知请求消息，可以包括上述第一信息中的第一字段、第二字段和第三字段，或者也可以只包括第二字段，对此不限定。
S1903，第三设备发送NDPA。
如图18所示，第三设备接收到感知请求消息后，可以根据感知请求消息，经过一个SIFS再发送NDPA，具体实现可以参考上述S202的相关介绍，在此不再赘述。
S1904，第三设备发送NDP。
如图18所示，第三设备可以在发送NDPA后，经过一个SIFS再发送NDP。
S1905，第三设备发送反馈请求消息。
如图18所示，第三设备可以在发送NDP后，经过一个SIFS再发送反馈请求消息，反馈请求消息的具体实现可以参考上述S205中的相关介绍。
S1906，第二设备向第三设备发送第一反馈，第三设备接收来自第二设备的第一反馈。
如图18所示，第三设备可以根据第一字段指示的具体反馈类型，确定第一反馈，如非压缩的CSI，具体实现可以参考上述第二种应用场景中的相关介绍，在此不再赘述。如此，第三设备在接收到反馈请求消息后，可以经过一个SIFS再发送第一反馈。
S1907，第三设备向第二设备发送第二反馈，第二设备接收来自第三设备的第二反馈。
如图18所示，第二设备可以根据上述第二字段指示的具体反馈类型，如为压缩的CSI，以及第一反馈，如非压缩的CSI，确定第二反馈，即压缩的CSI，具体实现可以参考上述第二种应用场景中的相关介绍，在此不再赘述。如此，第二设备在接收到第一反馈后，可以经过一个SIFS再向第二设备发送第二反馈。
S1908，第二设备向第一设备发送第三反馈，第一设备接收来自第二设备的第三反馈。
如图18所示，第二设备可以根据上述第三字段指示的具体反馈类型，如为感知测量结果，以及第二反馈，如压缩的CSI，确定第三反馈，即感知测量结果，以在接收到第二反馈后，经过一个SIFS再发送第三反馈。
确定方式8：
其中，图20为场景C中反馈指示方法的流程示意图三，如图20所示，以感知测量阶段和感知报告阶段为例，该反馈指示方法的步骤可以包括：
S2001，第一设备向第二设备发送感知请求消息，第二设备接收来自第一设备的感知请求消息。
其中，该感知请求消息可以包括上述第一信息中的第一字段和第二字段，以及还包括第三字段。其中，该第一字段可以用于指示第一反馈的具体反馈类型，如为非压缩的CSI，该第二字段可以用于指示第二反馈的具体反馈类型，如为压缩的CSI，该第三字段可以用于指示第三反馈的反馈类型由第二设备确定，具体实现可以参考上述S601-S602中的相关介绍，在此不再赘述。
可选地，该感知请求消息还可以包括上述模式指示信息，具体实现可以参考上述第一种应用场景中的相关介绍，在此不再赘述。
S2002，第二设备向第三设备发送感知请求消息，第三设备接收来自第二设备的感知请求消息。
其中，S2002的具体实现可以参考上述S1902中的相关介绍，在此不再赘述。
S2003，第三设备发送NDPA。
S2004，第三设备发送NDP。
S2005，第三设备发送反馈请求消息。
S2006，第二设备向第三设备发送第一反馈，第三设备接收来自第二设备的第一 反馈。
S2007，第三设备向第二设备发送第二反馈，第二设备接收来自第三设备的第二反馈。
其中，S2003-S2007的具体实现可以参考上述S1903-S1907中的相关介绍，在此不再赘述。
S2008，第二设备根据第一信息，确定第三反馈的具体反馈类型。
其中，第二设备可以根据第一信息中的第三字段，确定第三反馈的具体反馈类型，如为感知测量结果，具体实现可以参考上述第二种应用场景中的相关介绍，在此不再赘述。如此，第二设备可以根据接收到的第二反馈，如CSI，以及第三反馈的具体反馈类型，确定第三反馈，即感知测量结果。此外，S2003-S2007与S2008执行顺序不限定。
S2009，第二设备向第一设备发送第三反馈，第一设备接收来自第二设备的第三反馈。
其中，S2009具体实现可以参考上述S1908中的相关介绍，在此不再赘述。
确定方式9：
其中，图21为场景C中反馈指示方法的流程示意图四，如图21所示，以感知测量阶段和感知报告阶段为例，该反馈指示方法的步骤可以包括：
S2101，第一设备向第二设备发送感知请求消息，第二设备接收来自第一设备的感知请求消息。
其中，该感知请求消息可以包括上述第一信息中的第一字段和第二字段，以及还包括第三字段。其中，该第一字段可以用于指示第一反馈的具体反馈类型，如为非压缩的CSI，该第二字段可以用于指示第二反馈的反馈类型由第二设备确定，该第三字段可以用于指示第三反馈的具体反馈类型，如为感知测量结果，具体实现可以参考上述S601-S602中的相关介绍，在此不再赘述。
可选地，该感知请求消息还可以包括上述模式指示信息，具体实现可以参考上述第一种应用场景中的相关介绍，在此不再赘述。
S2102，第二设备根据第一信息，确定第二反馈的具体反馈类型。
其中，第二设备接收到上述感知请求消息后，可根据第一信息中的第二字段，确定第二反馈的具体反馈类型，如为压缩的CSI，具体实现可以参考上述第二种应用场景中的相关介绍，在此不再赘述。如此，第二设备可以生成第二信息，用以指示确定第二反馈的具体反馈类型。
S2103，第二设备向第三设备发送感知请求消息，第三设备接收来自第二设备的感知请求消息。
如图18所示，由于第二设备为感知接收端，第三设备为感知发送端，则第二设备需要向第三转发该感知请求消息，如接收到感知请求消息后，经过一个SIFS再发送感知请求消息。其中，第二设备转发的感知请求消息，可以包括上述第二信息，以及还可以只包括上述第一信息中如下任一种：第一字段、第二字段和第三字段、第一字段和第二字段、或者第二字段，对此不限定。
S2104，第三设备发送NDPA。
S2105，第三设备发送NDP。
S2106，第三设备发送反馈请求消息。
S2107，第二设备向第三设备发送第一反馈，第三设备接收来自第二设备的第一反馈。
应理解，上述第二信息也可以携带在第二设备向第三设备发送的第一反馈中，对此不限定。换言之，S2102在S2107之前执行即可。
S2108，第三设备向第二设备发送第二反馈，第二设备接收来自第三设备的第二反馈。
S2109，第二设备向第一设备发送第三反馈，第一设备接收来自第二设备的第三反馈。
其中，S2104-S2109的具体实现可以参考上述S1903-S1908中的相关介绍，在此不再赘述。
确定方式10：
其中，图22为场景C中反馈指示方法的流程示意图五，如图22所示，以感知测量阶段和感知报告阶段为例，该反馈指示方法的步骤可以包括：
S2201，第一设备向第二设备发送感知请求消息，第二设备接收来自第一设备的感知请求消息。
其中，该感知请求消息可以包括上述第一信息中的第一字段和第二字段，以及还包括第三字段。其中，该第一字段可以用于指示第一反馈的反馈类型由第三设备确定，该第二字段可以用于指示第二反馈的具体反馈类型，如为压缩的CSI，该第三字段可以用于指示第三反馈的具体反馈类型，如为感知测量结果，具体实现可以参考上述S601-S602中的相关介绍，在此不再赘述。
可选地，该感知请求消息还可以包括上述模式指示信息，具体实现可以参考上述第一种应用场景中的相关介绍，在此不再赘述。
S2202，第二设备向第三设备发送感知请求消息，第三设备接收来自第二设备的感知请求消息。
如图18所示，由于第二设备为感知接收端，第三设备为感知发送端，则第二设备需要向第三转发该感知请求消息，如接收到感知请求消息后，经过一个SIFS再发送感知请求消息。其中，第二设备转发的感知请求消息，可以只包括如下任一种：上述第一字段、上述第二字段和第三字段，或者上述第一字段和第二字段，对此不限定。
S2203，第三设备根据第一信息，确定第一反馈的具体反馈类型。
其中，第三设备接收到上述感知请求消息后，可根据第一信息中的第一字段，确定第一反馈的具体反馈类型，如为非压缩的CSI，具体实现可以参考上述第二种应用场景中的相关介绍，在此不再赘述。如此，第三设备可以生成第二信息，用以指示确定第一反馈的具体反馈类型。
S2204，第三设备发送NDPA。
S2205，第三设备发送NDP。
S2206，第三设备发送反馈请求消息。
其中，上述第二信息可以承载在第二设备发送的NDPA中，用以指示第一反馈的具体反馈类型，但不限定，如还可以承载在第三设备发送的NDP、以及反馈请求消息中。换言之，S2203在S2206之前执行即可。
S2207，第二设备向第三设备发送第一反馈，第三设备接收来自第二设备的第一反馈。
S2208，第三设备向第二设备发送第二反馈，第二设备接收来自第三设备的第二反馈。
S2209，第二设备向第一设备发送第三反馈，第一设备接收来自第二设备的第三反馈。
其中，S2204-S2209的具体实现可以参考上述S1903-S1908中的相关介绍，在此不再赘述。
应理解，在上述场景C中，除上述确定方式7-10外，还可以有其他的确定方式，如第二设备确定第一反馈的具体反馈类型、第二反馈的具体反馈类型和第三反馈的具体反馈类型，以及第二设备确定第一反馈的具体反馈类型，第三设备确定第二反馈的具体反馈类型和第三反馈的具体反馈类型等等，具体实现可以参考上述确定方式7-10中的相关介绍，在此不再赘述。
基于图6-图22所示出的方法可知，在多设备，及多次交互的场景中，通过第一信息指示不同层级的多个反馈的反馈类型，如第一反馈的反馈类型，和/或，第二反馈的反馈类型，可实现更全面、更精确地指示反馈类型，从而可以提高感知技术在多设备，多次交互场景下的适用性。
第二实施例：
示例性地，图23为本申请实施例提供的反馈指示方法的流程示意图二。该反馈指示方法可以适用于图5所示的三个设备中的两个设备，如第一设备、第二设备与第三设备中，第一设备与第二设备之间的通信。其中，第一设备可以是感知发起端、第二设备可以是为感知发送端的感知响应端、第三设备可以是为感知接收端的感知响应端。
如图23所示，该反馈指示方法可以包括如下步骤：
S2301，第一设备发送第四信息，第二设备接收第四信息。
其中，第四信息可以用于指示第一设备需要获取所有反馈或部分反馈，如第一反馈和/或第二反馈，第一反馈和第二反馈的具体实现可以参考上述第一实施例，在此不再累述。
具体而言，第四信息可以包括多个比特，如2个、3个比特等，如此，第四信息可以通过由多个比特组成的索引，或者通过多个比特的比特图，指示第一设备需要获取第一反馈和/或第二反馈，下面分别介绍。
a、索引指示：
其中，多个比特可以组成不同的索引，不同的索引可以指示第一设备需要获取第一反馈和/或第二反馈。比如，下表7所示。
表7
索引 需要获取的反馈
00 需要获取第一反馈
01 需要获取第二反馈
11 需要获取第一反馈和第二反馈
其中，根据表7可知，上述索引可以包括2个比特，用以指示第一设备需要获取的各种反馈。如此，第一设备可以遍历表7，以确定第一设备需要获取的反馈对应的索引，从而生成携带该索引的第四信息，用以指示第一设备需要获取该反馈。比如，若第一设备需要获取第一反馈，则遍历表7，以生成携带索引00的第四信息，用以指示第一设需要获取第一反馈。又比如，若第一设备需要获取第二反馈，则遍历表7，以生成携带索引01的第四信息，用以指示第一设需要获取第二反馈。再比如，若第一设备需要获取第一反馈和第二反馈，则遍历表7，以生成携带索引11的第四信息，用以指示第一设需要获取第一反馈和第二反馈。
b、比特图指示：
其中，第四信息可以包括多个比特，每个比特可以用于指示第一设备是否需要获取对应的一种反馈。比如，下表8所示。
表8
比特图 需要获取的反馈
10 需要获取第一反馈
01 需要获取第二反馈
11 需要获取第一反馈和第二反馈
其中，根据表8可知，表8中的比特图可以包括2个比特，2个比特按从左往右的顺序，每个比特都可以用于指示第一设备是否需要获取对应的一种反馈。比如，第一个比特可以用于指示第一设备是否需要获取第一反馈，为1指示第一设备需要获取第一反馈，为0指示第一设备不需要获取第一反馈。第二个比特可以用于指示第一设备是否需要获取第二反馈，为1指示第一设备需要获取第二反馈，为0指示第一设备不需要获取第二反馈。如此，如果第一个比特和第二个比特都为1，则指示第一设备需要获取第一反馈和第二反馈。
进一步地，上述第四信息可以承载在如下一项或多项中：感知建立阶段的信令，如感知建立请求消息，感知建立接收消息、或感知测量阶段的信令，如感知请求消息，以实现信令复用，从而降低通信开销，提高通信效率。
可选地，若第四信息指示第一设备需要获取第一反馈，则第二设备还可以向第三设备(图23中未示出)发送第四信息。如此，若第三设备直接与第一设备连接，则第三设备可以根据第四信息，直接向第一设备发送第一反馈，以便第一设备能够更快地获得第一反馈，从而可以降低通信时延，提高通信效率。
S2302，第二设备根据第四信息，发送第一反馈和/或第二反馈，第一设备接收第一反馈和/或第二反馈。
其中，在第一设备发送反馈请求消息后，第二设备可以接收到来自第三设备的第一反馈。若第四信息指示第一设备需要获取部分反馈，如第一反馈，则第二设备可以向第一设备发送第一反馈，即转发第一反馈。若第四信息指示第一设备需要获取部分反馈，如第二反馈，则第二设备可以根据第一反馈，如CSI，确定第二反馈，如感知 测量结果，从而向第二设备发送第二反馈。若第四信息指示第一设备需要获取所有反馈，如第一反馈和第二反馈，则第二设备可以根据第一反馈确定第二反馈，再向第二设备发送第一反馈和第二反馈，如打包或分开发送第一反馈和第二反馈。
以上结合图23详细说明了本申请实施例提供的反馈指示方法的整体流程，以下结合图24-图26，详细说明图23所示的反馈指示方法在上述场景A-场景C下的流程。
示例性地，图24为场景A中反馈指示方法的流程示意图五，如图24所示，以上述确定方式1，以及感知测量阶段和感知报告阶段为例，该反馈指示方法的步骤可以包括：
S2401，第一设备向第二设备发送感知请求消息，第二设备接收来自第一设备的感知请求消息。
其中，该感知请求消息还可以携带上述第四信息，该第四信息可以用于指示第一设备需要获取第一反馈和第二反馈，具体实现可以参考上述S2301-S2302中的相关介绍，在此不再赘述。
S2402，第二设备发送NDPA。
S2403，第二设备发送NDP。
S2404，第一设备向第二设备发送第一反馈，第二设备接收来自第一设备的第一反馈。
S2405，第二设备向第一设备发送第二反馈，第一设备接收来自第二设备的第二反馈。
其中，S2401-S2405的具体实现可以参考上述S901-S905中的相关介绍，在此不再赘述。
S2406，第二设备向第一设备发送第一反馈，第一设备接收来自第二设备的第一反馈。
其中，参考上述S2401中的相关介绍可知，第二设备可以根据第四信息，向第一设备发送第一反馈，如打包发送第一反馈和第二反馈。此外，如果第四信息用于指示第一设备需要获取第一反馈，则第二设备可以根据第四信息，直接向第一设备转发来自第二设备的第一反馈，且无需生成第二反馈。
示例性地，图25为场景B中反馈指示方法的流程示意图五，如图25所示，以上述确定方式4，以及感知测量阶段和感知报告阶段为例，该反馈指示方法的步骤可以包括：
S2501，第一设备向第二设备发送感知请求消息，第二设备接收来自第一设备的感知请求消息。
其中，该感知请求消息还可以携带上述第四信息，该第四信息可以用于指示第一设备需要获取第一反馈和第二反馈，具体实现可以参考上述S2301-S2302中的相关介绍，在此不再赘述。
S2502，第二设备发送NDPA。
S2503，第二设备发送NDP。
S2504，第二设备发送反馈请求消息。
S2505，第三设备向第二设备发送第一反馈，第三设备接收来自第二设备的第一反馈。
S2506，第三设备向第一设备发送第一反馈，第三设备接收来自第一设备的第一反馈。
S2507，第二设备向第一设备发送第二反馈，第一设备接收来自第二设备的第二反馈。
其中，上述S2501-S2507的具体实现可以参考上述S1401-S1407中的相关介绍，在此不再赘述。
S2508，第二设备向第一设备发送第一反馈，第一设备接收来自第二设备的第一反馈。
其中，参考上述S2501中的相关介绍可知，第二设备可以根据第四信息，向第一设备发送第一反馈，如打包发送第一反馈和第二反馈。需要指出，如果第四信息用于指示第一设备需要获取第一反馈，则第二设备可以根据第四信息，直接向第一设备转发来自第三设备的第一反馈，且无需生成第二反馈。此外，如果第二设备知到第三设备可以与第一设备直接通信，则第二设备也可以不发送第一反馈。
示例性地，图26为场景C中反馈指示方法的流程示意图六，如图26所示，以上述确定方式7，以及感知测量阶段和感知报告阶段为例，该反馈指示方法的步骤可以包括：
S2601，第一设备向第二设备发送感知请求消息，第二设备接收来自第一设备的感知请求消息。
其中，该感知请求消息还可以携带上述第四信息，该第四信息可以用于指示第一设备需要获取第一反馈、第二反馈和第三反馈，具体实现可以参考上述S2301-S2302中的相关介绍，在此不再赘述。
S2602，第二设备向第三设备发送感知请求消息，第三设备接收来自第二设备的感知请求消息。
S2603，第三设备发送NDPA。
S2604，第三设备发送NDP。
S2605，第三设备发送反馈请求消息。
S2606，第二设备向第三设备发送第一反馈，第三设备接收来自第二设备的第一反馈。
S2607，第三设备向第二设备发送第二反馈，第二设备接收来自第三设备的第二反馈。
其中，上述S2601-S2607的具体实现可以参考上述S1901-S1907中的相关介绍，在此不再赘述。
S2608，第三设备向第二设备发送第一反馈，第二设备接收来自第三设备的第一反馈。
其中，参考上述S2601中的相关介绍可知，第三设备可以根据第四信息，向第二设备发送第一反馈，如打包发送第一反馈和第二反馈。需要指出，如果第四信息用于指示第一设备只需要获取第一反馈，则第三设备根据第四信息，可直接向第二设备转 发来自第二设备的第一反馈，且无需生成第二反馈。
S2609，第二设备向第一设备发送第三反馈，第一设备接收来自第二设备的第三反馈。
其中，上述S2609的具体实现可以参考上述S1909中的相关介绍，在此不再赘述。
S2610，第二设备向第一设备发送第一反馈和第二反馈，第一设备接收来自第二设备的第一反馈和第二反馈。
其中，参考上述S2601中的相关介绍可知，第二设备可以根据第四信息，向第一设备发送第一反馈和第二反馈，如打包发送第一反馈、第二反馈和第三反馈。需要指出，如果第四信息用于指示第一设备只需要获取第一反馈和/或第二反馈，则第二设备根据第四信息，可直接向第一设备转发来自第二设备的第一反馈和/或第二反馈，且无需生成第二反馈。
基于图23-图26所示出的方法可知，第一设备可以根据实际需求，如业务的需求，向第二设备发送第四信息。如此，第二设备可以根据第四信息，向第一设备发送实际需要的反馈，而不发送实际不需要的反馈，以避免发送冗余信息，从而降低通信开销，提高通信效率。
需要说明的是，本申请实施例中，上述第一实施例与上述第二实施例可以独立实施，也可以组合实施，对此不限定。
第三实施例：
示例性地，图27为本申请实施例提供的反馈指示方法的流程示意图三。该反馈指示方法可以适用于图5所示的三个设备中的两个设备，如第一设备、第二设备与第三设备中，第一设备与第二设备之间的通信。其中，第一设备可以是感知发起端、第二设备可以是为感知发送端的感知响应端、第三设备可以是为感知接收端的感知响应端。
如图27所示，该反馈指示方法可以包括如下步骤：
S2701，第一设备生成第五信息。
其中，第五信息可以用于指示第二设备确定NDPA的全部配置参数，或者，用于指示NDPA的一部分配置参数，以及NDPA的另一部分配置参数由第二设备确定。比如，NDPA的全部配置参数可以包括：NDPA的物理层协议数据单元(physical layer protocol date units，PPDU)类型、LTF尺寸、目标用户、反馈时限、确定参与感知过程的感知接收端、确定感知过程的编号，或者说感知会话的编号、或确定感知过程的频带信息和资源信息。反馈时限用于指示第一设备，如感知发起端，将在之后预设时间段内触发反馈，以便第二设备做好反馈准备。如此，由第二设备确定的部分配置参数可以包括如下一项或多项：确定参与感知过程的感知接收端、确定感知过程的编号，或者说感知会话的编号、或确定感知过程的频带信息和资源信息等。
进一步地，第一设备可以根据如下一项或多项：第一设备的状态、第二设备的状态、第三设备的状态、第一设备的业务需求、第二设备的业务需求、或第三设备的业务需求，确定第五信息，对此不限定。
S2702，第一设备发送第五信息，第二设备接收第五信息。
其中，第五信息可以承载在如下一项或多项中：感知建立阶段的信令，如感知建立请求消息，感知建立接收消息、或感知测量阶段的信令，如感知请求消息，以实现信令复用，从而降低通信开销，提高通信效率，
S2703，第二设备解析第五信息。
其中，第二设备可以通过解析第五信息，确定NDPA的全部配置参数。
基于图27所示出的方法可知，由于NDPA的配置参数可由第一设备和第二设备配合确定，如此，可实现根据业务需求，灵活确定NDPA的配置参数，以便NDPA的配置参数能够满足业务需求。比如，若第一设备的业务对NDPA的配置参数需求，则由第一设备确定NDPA的配置参数。但是，若第二设备的业务对NDPA的配置参数需求，则由第一设备指示第二设备确定NDPA的至少部分配置参数，以满足第二设备的业务需求。
需要说明的是，本申请实施例中，上述第一实施例、上述第二实施例和上述第三实施可以独立实施，也可以任意两个或三个实施例组合实施，对此不限定。
以上介绍了本申请实施例的反馈指示方法，以下介绍本申请实施例的反馈指示装置，本申请实施例的反馈指示装置包括应用于发送端的反馈指示装置和应用于接收端的反馈指示装置，下面分别介绍。
一些实施例中，应用于发送端的反馈指示装置可适用于图5中所示出的通信系统中，并具有图6中所示出的反馈指示方法中第一设备的功能。应用于接收端的反馈指示装置可适用于图5中所示出的通信系统中，并具有图6中所示出的反馈指示方法中第二设备的任意功能。
示例性地，图28为应用于发送端的反馈指示装置2800的结构示意图，如图28所示，反馈指示装置2800包括用于执行图6中所示出的反馈指示方法中第一设备的功能的单元，如收发单元2801和处理单元2802。
其中，处理单元2802，用于生成第一帧。其中，所述第一帧包括：第一信息，该第一信息用于指示第一反馈的反馈类型，和/或，第二反馈的反馈类型。第一反馈与第二反馈是不同层级的反馈。
收发单元2801，用于发送第一帧。
一种可能的设计方案中，第一帧还可以包括：模式指示信息，模式指示信息可以用于指示第一信息是指示如下任一种：第一反馈的反馈类型、第二反馈的反馈类型、或第一反馈的反馈类型和第二反馈的反馈类型。
一种可能的设计方案中，第一反馈的反馈类型可以包括以下至少一种：非压缩的信道状态信息CSI、压缩的CSI、空数据分组NDP、感知测量结果、由感知发起端确定反馈类型、由感知响应端确定反馈类型、由感知发送端确定反馈类型、或由感知接收端确定反馈类型，感知发起端为第一设备。
一种可能的设计方案中，第二反馈的反馈类型可以包括以下至少一种：非压缩的CSI、压缩的CSI、NDP、感知测量结果、由感知发起端确定反馈类型、由感知响应端确定反馈类型、由感知发送端确定反馈类型、或由感知接收端确定反馈类型，感知发起端为第一设备。
一种可能的设计方案中，第一信息可以承载在以下至少一项中：感知建立阶段的信令、或感知测量阶段的感知请求消息。
一种可能的设计方案中，第一反馈与第二反馈是不同层级的反馈可以指：第一反馈的发送时机与第二反馈的发送时机不同，或第一反馈的发送对象与第二反馈的发送对象不同。
一种可能的设计方案中，第一信息可以包括；第一字段和/或第二字段。其中，第一字段可以用于指示所述第一反馈的反馈类型，第二字段可以用于指示第二反馈的反馈类型。
可选地，反馈指示装置2800还可以包括存储单元(图28中未示出)，该存储单元存储有程序或指令。当处理单元2802执行该程序或指令时，使得反馈指示装置2800可以执行图6所示出的反馈指示方法中第一设备的功能。
应理解，反馈指示装置2800中涉及的处理单元2802可以由处理器或处理器相关电路组件实现；收发单元2801可以由收发器或收发器相关电路组件实现。
需要说明的是，反馈指示装置2800可以是终端设备或网络设备，也可以是可设置于终端设备或网络设备中的芯片(系统)或其他部件或组件，还可以是包含终端设备或网络设备的装置，本申请对此不做限定。
此外，反馈指示装置2800的具体实现可以参考图6所示出的反馈指示方法中的相关介绍，此处不再赘述。
示例性地，图29为应用于接收端的反馈指示装置2900的结构示意图，如图29所示，反馈指示装置2900，包括用于执行图6中所示出的反馈指示方法中第二设备的功能的单元，如收发单元2901和处理单元2902。
其中，收发单元2901，用于接收第一帧。其中，第一帧包括：第一信息，该第一信息用于指示第一反馈的反馈类型，和/或，第二反馈的反馈类型。该第一反馈与第二反馈是不同层级的反馈。
处理单元2902，用于解析第一帧。
一种可能的设计方案中，第一帧还可以包括：模式指示信息。其中，模式指示信息可以用于指示第一信息是指示如下任一种：第一反馈的反馈类型、第二反馈的反馈类型、或第一反馈的反馈类型和第二反馈的反馈类型。
一种可能的设计方案中，第一反馈的反馈类型可以包括以下至少一种：非压缩的CSI、压缩的CSI、NDP、感知测量结果、由感知发起端确定反馈类型、由感知响应端确定反馈类型、由感知发送端确定反馈类型、或由感知接收端确定反馈类型，感知发起端可以为第一设备。
一种可能的设计方案中，第二反馈的反馈类型可以包括以下至少一种：非压缩的CSI、压缩的CSI、NDP、感知测量结果、由感知发起端确定反馈类型、由感知响应端确定反馈类型、由感知发送端确定反馈类型、或由感知接收端确定反馈类型，感知发起端可以为第一设备。
一种可能的设计方案中，第一反馈与第二反馈是不同层级的反馈可以指：第一反馈的发送时机与第二反馈的发送时机不同，或第一反馈的发送对象与第二反馈的发送对象不同。
一种可能的设计方案中，若第一信息未指示第一反馈的反馈类型，或者第一信息指示第一反馈的反馈类型可以包括：由感知发送端确定反馈类型，感知发送端可以为第二设备，如此，则处理单元2902还用于在解析所述第一帧之后，控制收发单元2901向第三设备发送第二信息。其中，第二信息用于指示第一反馈的反馈类型包括如下至少一项：非压缩的CSI、压缩的CSI、NDP、感知测量结果、或由感知接收端确定反馈类型，感知接收端可以为第三设备。
可选地，第二信息可以承载在感知测量阶段的信令中。
一种可能的设计方案中，第一信息可以包括；第一字段和第二字段。其中，第一字段可以用于指示第一反馈的反馈类型，第二字段可以用于指示第二反馈的反馈类型。
可选地，第一字段可以用于指示第一反馈的反馈类型包括如下至少一项：非压缩的CSI、压缩的CSI、NDP、感知测量结果、或由感知接收端确定反馈类型，且感知接收端可以为第三设备，处理单元2902还用于在解析第一帧之后，控制收发单元2901向第三设备只发送第一字段。
可选地，第二字段可以用于指示第二反馈的反馈类型包括：由感知接收端确定反馈类型，且感知接收端可以为第三设备，处理单元2902还用于在解析第一帧之后，控制收发单元2901向第三设备只发送第二字段。
进一步地，在收发单元2901，还用于在向第三设备只发送第二字段之后，接收来自第三设备的第三信息。其中，第三信息可以用于指示第二反馈的反馈类型包括如下至少一项：非压缩的CSI、压缩的CSI、NDP、或感知测量结果。
一种可能的设计方案中，第一信息可以承载在以下至少一项中：感知建立阶段的信令、或感知测量阶段的信令，以实现信令复用，从而降低通信开销，提高通信效率。
可选地，反馈指示装置2900还可以包括存储单元(图29中未示出)，该存储单元存储有程序或指令。当处理单元2902执行该程序或指令时，使得反馈指示装置2900可以执行图6所示出的反馈指示方法中第二设备的功能。
应理解，反馈指示装置2900中涉及的处理单元2902可以由处理器或处理器相关电路组件实现；收发单元2901可以由收发器或收发器相关电路组件实现。
需要说明的是，反馈指示装置2900可以是终端设备或网络设备，也可以是可设置于终端设备或网络设备中的芯片(系统)或其他部件或组件，还可以是包含终端设备或网络设备的装置，本申请对此不做限定。
此外，反馈指示装置2900的具体实现可以参考图6所示出的反馈指示方法中的相关介绍，此处不再赘述。
另一些实施例中，应用于发送端的反馈指示装置可适用于图5中所示出的通信系统中，并具有图23中所示出的反馈指示方法中第一设备的功能。应用于接收端的反馈指示装置可适用于图5中所示出的通信系统中，并具有图23中所示出的反馈指示方法中第二设备的任意功能。
示例性地，图30为应用于发送端的反馈指示装置3000的结构示意图，如图30所示，反馈指示装置3000包括用于执行图23中所示出的反馈指示方法中第一设备的 功能的单元，如发送单元3001和接收单元3002。
发送单元3001，用于发送第四信息。其中，第四信息用于指示第一设备需要获取第一反馈和/或第二反馈，且第一反馈与第二反馈是不同层级的反馈。
接收单元3002，用于接收第一反馈和/或第二反馈。
一种可能的设计方案中，第一反馈与第二反馈是不同层级的反馈可以指：第一反馈的发送时机与第二反馈的发送时机不同，或第一反馈的发送对象与第二反馈的发送对象不同。
一种可能的设计方案中，第四信息可以承载在以下至少一项中：感知建立阶段的信令、感知测量阶段的感知请求消息，以实现信令复用，从而降低通信开销，提高通信效率。
可选地，发送单元3001和接收单元3002也可以集成为一个单元，如收发单元(图30中未示出)。其中，收发单元用于实现反馈指示装置3000的发送功能和接收功能。
可选地，反馈指示装置3000还可以包括处理单元3003(图30中以虚线框示出)。其中，处理单元3003用于实现反馈指示装置3000的处理功能。
可选地，反馈指示装置3000还可以包括存储单元(图30中未示出)，该存储单元存储有程序或指令。当处理单元3003执行该程序或指令时，使得反馈指示装置3000可以执行图23所示的反馈指示方法中第一设备的功能。
应理解，反馈指示装置3000中涉及的处理单元3001可以由处理器或处理器相关电路组件实现，可以为处理器或处理单元；收发单元可以由收发器或收发器相关电路组件实现。
需要说明的是，反馈指示装置3000可以是终端设备或网络设备，也可以是设置于上述终端设备或网络设备中的芯片(系统)或其他部件或组件，或者包含该终端设备或网络设备的装置，本申请实施例对此不做限定。
此外，反馈指示装置3000的具体实现可以参考图23所示出的反馈指示方法中的相关介绍，此处不再赘述。
示例性地，图31为应用于接收端的反馈指示装置3100的结构示意图，如图31所示，反馈指示装置3100包括用于执行图23中所示出的反馈指示方法中第二设备的功能的单元，如收发单元3101和处理单元3102。
收发单元3101，用于接收第四信息。其中，第四信息用于指示第一设备需要获取第一反馈和/或第二反馈，且第一反馈与第二反馈是不同层级的反馈。
处理单元3102，用于根据第四信息，控制收发单元3102发送第一反馈和/或第二反馈。
一种可能的设计方案中，第一反馈与第二反馈是不同层级的反馈可以指：第一反馈的发送时机与第二反馈的发送时机不同，或第一反馈的发送对象与第二反馈的发送对象不同。
一种可能的设计方案中，第四信息可以承载在以下至少一项中：感知建立阶段的信令、感知测量阶段的感知请求消息。
可选地，反馈指示装置3100还可以包括存储单元(图31中未示出)，该存储单 元存储有程序或指令。当处理单元3102执行该程序或指令时，使得反馈指示装置3100可以执行图23所示出的反馈指示方法中第二设备的功能。
应理解，反馈指示装置3100中涉及的处理单元3102可以由处理器或处理器相关电路组件实现，可以为处理器；收发单元3101可以由收发器或收发器相关电路组件实现。
需要说明的是，反馈指示装置3100可以是终端设备或网络设备，也可以是可设置于终端设备或网络设备中的芯片(系统)或其他部件或组件，还可以是包含终端设备或网络设备的装置，本申请对此不做限定。
此外，反馈指示装置3100的具体实现可以参考图23所示出的反馈指示方法中的相关介绍，此处不再赘述。
又一些实施例中，应用于发送端的反馈指示装置可适用于图5中所示出的通信系统中，并具有图27中所示出的反馈指示方法中第一设备的功能。应用于接收端的反馈指示装置可适用于图5中所示出的通信系统中，并具有图27中所示出的反馈指示方法中第二设备的任意功能。
示例性地，图32为应用于发送端的反馈指示装置3200的结构示意图，如图32所示，反馈指示装置3200包括用于执行图27中所示出的反馈指示方法中第一设备的功能的单元，如收发单元3201和处理单元3202。
其中，处理单元3202，用于生成第五信息。其中，第五信息用于指示第二设备确定NDPA的全部配置参数，或者，第五信息用于指示NDPA的一部分配置参数，以及NDPA的另一部分配置参数由第二设备确定。
收发单元3201，用于发送第五信息。
一种可能的设计方案中，第五信息可以承载在如下一项或多项中：感知建立阶段的信令、或感知测量阶段的感知请求消息，以实现信令复用，从而降低通信开销，提高通信效率。
可选地，反馈指示装置3200还可以包括存储单元(图32中未示出)，该存储单元存储有程序或指令。当处理单元3202执行该程序或指令时，使得反馈指示装置3200可以执行图27所示出的反馈指示方法中第一设备的功能。
应理解，反馈指示装置3200中涉及的处理单元3202可以由处理器或处理器相关电路组件实现；收发单元3201可以由收发器或收发器相关电路组件实现。
需要说明的是，反馈指示装置3200可以是终端设备或网络设备，也可以是可设置于终端设备或网络设备中的芯片(系统)或其他部件或组件，还可以是包含终端设备或网络设备的装置，本申请对此不做限定。
此外，反馈指示装置3200的具体实现可以参考图27所示出的反馈指示方法中的相关介绍，此处不再赘述。
示例性地，图33为应用于接收端的反馈指示装置3300的结构示意图，如图33所示，反馈指示装置3300包括用于执行图27中所示出的反馈指示方法中第二设备的功能的单元，如收发单元3301和处理单元3302。
收发单元3301，用于接收第五信息。其中，第五信息用于指示第二设备确定NDPA的全部配置参数，或者，第五信息用于指示所述NDPA的一部分配置参数， 以及NDPA的另一部分配置参数由第二设备确定。
处理单元3302，用于解析第五信息。
一种可能的设计方案中，第五信息可以承载在如下一项或多项中：感知建立阶段的信令、或感知测量阶段的感知请求消息。
可选地，反馈指示装置3300还可以包括存储单元(图33中未示出)，该存储单元存储有程序或指令。当处理单元3302执行该程序或指令时，使得反馈指示装置3300可以执行图27所示出的反馈指示方法中第二设备的功能。
应理解，反馈指示装置3300中涉及的处理单元3302可以由处理器或处理器相关电路组件实现；收发单元3301可以由收发器或收发器相关电路组件实现。
需要说明的是，反馈指示装置3300可以是终端设备或网络设备，也可以是可设置于终端设备或网络设备中的芯片(系统)或其他部件或组件，还可以是包含终端设备或网络设备的装置，本申请对此不做限定。
此外，反馈指示装置3300的具体实现可以参考图27所示出的反馈指示方法中的相关介绍，此处不再赘述。
以上介绍了本申请实施例的应用于发送端的反馈指示装置和应用于接收端的反馈指示装置，以下介绍该应用于发送端的反馈指示装置和该应用于接收端的反馈指示装置可能的产品形态。应理解，但凡具备上述图28、图30或图32所述的应用于发送端的反馈指示装置的特征的任何形态的产品，和但凡具备上述图29、图31或图33所述应用于接收端的反馈指示装置的特征的任何形态的产品，都落入本申请的保护范围。还应理解，以下介绍仅为举例，不限制本申请实施例的应用于发送端的反馈指示装置的产品形态和应用于接收端的反馈指示装置的产品形态仅限于此。
作为一种可能的产品形态，本申请实施例所述的应用于发送端的反馈指示装置和应用于接收端的反馈指示装置，可以由一般性的总线体系结构来实现。
上述应用于发送端的反馈指示装置，包括处理器，与该处理器内部连接通信的收发器；该处理器用于执行上述图6、图23或图27所示的反馈指示方式中第一设备的处理功能。该收发器用于执行上述图6、图23或图27所示的反馈指示方式中第一设备的收发功能。可选地，该应用于发送端的反馈指示装置还可以包括存储器，该存储器用于存储处理器执行的指令。
上述应用于接收端的反馈指示装置，包括处理器，与该处理器内部连接通信的收发器；该处理器用于执行上述图6、图23或图27所示的反馈指示方式中第二设备的处理功能。该收发器用于执行上述图6、图23或图27所示的反馈指示方式中第二设备的收发功能。可选地，该应用于接收端的反馈指示装置还可以包括存储器，该存储器用于存储处理器执行的指令。
作为一种可能的产品形态，本申请实施例所述的应用于发送端的反馈指示装置和应用于接收端的反馈指示装置，可以由通用处理器来实现。
实现该应用于发送端的反馈指示装置的通用处理器包括处理电路，与该处理电路内部连接通信的输出接口。其中，该处理电路用于控制该输出接口执行收发功能。可选地，该通用处理器还可以包括存储介质，该存储介质用于存储处理电路执行的指令。
实现该应用于接收端的反馈指示装置的通用处理器包括处理电路，与该处理电路内部连接通信的输入接口，该处理电路用于控制该输出接口执行收发功能。可选地，该通用处理器还可以包括存储介质，该存储介质用于存储处理电路执行的指令。
作为一种可能的产品形态，本申请实施例所述的应用于发送端的反馈指示装置和应用于接收端的反馈指示装置，还可以使用下述来实现：一个或多个FPGA(现场可编程门阵列)、PLD(可编程逻辑器件)、控制器、状态机、门逻辑、分立硬件部件、任何其它适合的电路、或者能够执行本申请通篇所描述的各种功能的电路的任意组合。
应理解，上述各种产品形态的应用于发送端的反馈指示装置和应用于接收端的反馈指示装置，分别具有上述方法实施例中发送端和接收端的任意功能，此处不再赘述。
应理解，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
本领域普通技术人员可以意识到，结合本文中所公开的实施例中描述的各方法步骤和单元，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各实施例的步骤及组成。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。本领域普通技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参见前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、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。另外，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，也可以是电的，机械的或其它的形式连接。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本申请实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分，或者该技术方案的全部或部分可以以软件 产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：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，可轻易想到各种等效的修改或替换，这些修改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权利要求的保护范围为准。

Claims (33)

  1. 一种反馈指示方法，其特征在于，包括：
    第一设备生成第一帧，其中，所述第一帧包括：第一信息，所述第一信息用于指示第一反馈的反馈类型，和/或，第二反馈的反馈类型，所述第一反馈与所述第二反馈是不同层级的反馈；
    所述第一设备发送所述第一帧。
  2. 根据权利要求1所述的方法，其特征在于，所述第一帧还包括：模式指示信息，所述模式指示信息用于指示所述第一信息是指示如下任一种：所述第一反馈的反馈类型、所述第二反馈的反馈类型、或所述第一反馈的反馈类型和所述第二反馈的反馈类型。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一反馈的反馈类型包括以下至少一种：非压缩的信道状态信息CSI、压缩的CSI、空数据分组NDP、感知测量结果、由感知发起端确定反馈类型、由感知响应端确定反馈类型、由感知发送端确定反馈类型、或由感知接收端确定反馈类型，所述感知发起端为所述第一设备。
  4. 根据权利要求1或2所述的方法，其特征在于，所述第二反馈的反馈类型包括以下至少一种：非压缩的CSI、压缩的CSI、NDP、感知测量结果、由感知发起端确定反馈类型、由感知响应端确定反馈类型、由感知发送端确定反馈类型、或由感知接收端确定反馈类型，所述感知发起端为所述第一设备。
  5. 根据权利要求1-4中任一项所述的方法，其特征在于，所述第一信息承载在以下至少一项中：感知建立阶段的信令、或感知测量阶段的感知请求消息。
  6. 根据权利要求1-5中任一项所述的方法，其特征在于，所述第一反馈与所述第二反馈是不同层级的反馈是指：所述第一反馈的发送时机与所述第二反馈的发送时机不同，或所述第一反馈的发送对象与所述第二反馈的发送对象不同。
  7. 根据权利要求1-6中任一项所述的方法，其特征在于，所述第一信息包括；第一字段和第二字段，所述第一字段用于指示所述第一反馈的反馈类型，所述第二字段用于指示第二反馈的反馈类型。
  8. 一种反馈指示方法，其特征在于，包括：
    第二设备接收第一帧，其中，所述第一帧包括：第一信息，所述第一信息用于指示第一反馈的反馈类型，和/或，第二反馈的反馈类型，所述第一反馈与所述第二反馈是不同层级的反馈；
    所述第二设备解析所述第一帧。
  9. 根据权利要求8所述的方法，其特征在于，所述第一帧还包括：模式指示信息，所述模式指示信息用于指示所述第一信息是指示如下任一种：所述第一反馈的反馈类型、所述第二反馈的反馈类型、或所述第一反馈的反馈类型和所述第二反馈的反馈类型。
  10. 根据权利要求8或9所述的方法，其特征在于，所述第一反馈的反馈类型包括以下至少一种：非压缩的CSI、压缩的CSI、NDP、感知测量结果、由感知发起端确定反馈类型、由感知响应端确定反馈类型、由感知发送端确定反馈类型、或由感知接收端确定反馈类型，所述感知发送端为所述第二设备。
  11. 根据权利要求8或9所述的方法，其特征在于，所述第二反馈的反馈类型包括以下至少一种：非压缩的CSI、压缩的CSI、NDP、感知测量结果、由感知发起端确定反馈类型、由感知响应端确定反馈类型、由感知发送端确定反馈类型、或由感知接收端确定反馈类型，所述感知发送端为所述第二设备。
  12. 根据权利要求8-11中任一项所述的方法，其特征在于，所述第一反馈与所述第二反馈是不同层级的反馈是指：所述第一反馈的发送时机与所述第二反馈的发送时机不同，或所述第一反馈的发送对象与所述第二反馈的发送对象不同。
  13. 根据权利要求8所述的方法，其特征在于，所述第一信息未指示所述第一反馈的反馈类型，或者所述第一信息指示所述第一反馈的反馈类型包括：由感知发送端确定反馈类型，所述感知发送端为所述第二设备，则所述第二设备解析所述第一帧之后，所述方法还包括：
    所述第二设备向第三设备发送第二信息，其中，所述第二信息用于指示所述第一反馈的反馈类型包括如下至少一项：非压缩的CSI、压缩的CSI、NDP、感知测量结果、或由感知接收端确定反馈类型，所述感知接收端为所述第三设备。
  14. 根据权利要求13所述的反馈指示方法，其特征在于，所述第二信息承载在以下至少一项中：感知测量阶段的信令、或感知报告阶段的信令中。
  15. 根据权利要求8所述的方法，其特征在于，所述第一信息包括；第一字段和/或第二字段，所述第一字段用于指示所述第一反馈的反馈类型，所述第二字段用于指示第二反馈的反馈类型。
  16. 根据权利要求15所述的方法，其特征在于，所述第一字段用于指示所述第一反馈的反馈类型包括如下至少一项：非压缩的CSI、压缩的CSI、NDP、感知测量结果、或由感知接收端确定反馈类型，所述感知接收端为第三设备，在所述第二设备解析所述第一帧之后，所述方法还包括：
    所述第二设备向所述第三设备只发送所述第一字段。
  17. 根据权利要求15所述的方法，其特征在于，所述第二字段用于指示所述第二反馈的反馈类型包括：由感知接收端确定反馈类型，所述感知接收端为第三设备，在所述第二设备解析所述第一帧之后，所述方法还包括：
    所述第二设备向所述第三设备只发送所述第二字段。
  18. 根据权利要求17所述的方法，其特征在于，向所述第三设备发送所述第二字段之后，所述方法还包括：
    所述第二设备接收来自所述第三设备的第三信息，其中，所述第三信息用于指示所述第二反馈的反馈类型包括如下至少一项：非压缩的CSI、压缩的CSI、NDP、或感知测量结果。
  19. 根据权利要求8-18中任一项所述的反馈指示方法，其特征在于，所述第一信息承载在以下至少一项中：感知建立阶段的信令、或感知测量阶段的信令。
  20. 一种反馈指示方法，其特征在于，包括：
    第一设备发送第四信息，其中，所述第四信息用于指示所述第一设备需要获取第一反馈和/或第二反馈，所述第一反馈与所述第二反馈是不同层级的反馈；
    所述第一设备接收所述第一反馈和/或所述第二反馈。
  21. 根据权利要求20所述的方法，其特征在于，所述第一反馈与所述第二反馈是不同层级的反馈是指：所述第一反馈的发送时机与所述第二反馈的发送时机不同，或所述第一反馈的发送对象与所述第二反馈的发送对象不同。
  22. 根据权利要求20或21所述的方法，其特征在于，所述第四信息承载在以下至少一项中：感知建立阶段的信令、感知测量阶段的感知请求消息。
  23. 一种反馈指示方法，其特征在于，包括：
    第二设备接收第四信息，其中，所述第四信息用于指示第一设备需要获取第一反馈和/或第二反馈，所述第一反馈与所述第二反馈是不同层级的反馈；
    所述第二设备根据所述第四信息，发送所述第一反馈和/或所述第二反馈。
  24. 根据权利要求23所述的反馈指示方法，其特征在于，所述第一反馈与所述第二反馈是不同层级的反馈是指：所述第一反馈的发送时机与所述第二反馈的发送时机不同，或所述第一反馈的发送对象与所述第二反馈的发送对象不同。
  25. 根据权利要求23或24所述的反馈指示方法，其特征在于，所述第四信息承载在以下至少一项中：感知建立阶段的信令、感知测量阶段的感知请求消息。
  26. 一种反馈指示方法，其特征在于，包括：
    第一设备生成第五信息，其中，所述第五信息用于指示第二设备确定NDPA的全部配置参数，或者，所述第五信息用于指示所述NDPA的一部分配置参数，以及所述NDPA的另一部分配置参数由所述第二设备确定；
    所述第一设备发送所述第五信息。
  27. 根据权利要求26所述的方法，其特征在于，所述第五信息承载在如下一项或多项中：感知建立阶段的信令、或感知测量阶段的感知请求消息。
  28. 一种反馈指示方法，其特征在于，包括：
    第二设备接收来第五信息，其中，所述第五信息用于指示第二设备确定NDPA的全部配置参数，或者，所述第五信息用于指示所述NDPA的一部分配置参数，以及所述NDPA的另一部分配置参数由所述第二设备确定；
    所述第二设备解析所述第五信息。
  29. 根据权利要求28所述的方法，其特征在于，所述第五信息承载在如下一项或多项中：感知建立阶段的信令、或感知测量阶段的感知请求消息。
  30. 一种反馈指示装置，其特征在于，包括用于执行如权利要求1-7、20-22、26或27中任一项方法的单元。
  31. 一种反馈指示装置，其特征在于，包括用于执行如权利要求8-19、23-25、28或29中任一项方法的单元。
  32. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序包括用于执行如权利要求1-29任一项方法的指令。
  33. 一种计算机程序，其特征在于，所述计算机程序包括用于执行如权利要求1-29任一项方法的指令。
PCT/CN2022/098192 2021-06-17 2022-06-10 反馈指示方法及装置 WO2022262658A1 (zh)

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