Feedback indication method and device

Abstract

To provide a method and a device for more comprehensively providing feedback and improving applicability of a sensing technology in a plurality of devices and a plurality of interaction scenarios.SOLUTION: This method includes steps of generating a first frame by a first device and transmitting the first frame to a second device. The first frame includes first information, and the first information indicates a feedback type of a first feedback and / or a feedback type of a second feedback. The first feedback and the second feedback are feedback at different levels.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001]

[0001] This application claims priority to Chinese Patent Application No. 202110674951.7 entitled "Feedback Indication Method and Apparatus" filed with the State Intellectual Property Office of China on June 17, 2021, the entirety of which is incorporated herein by reference.

[0002]

[0002] Technical field The present application relates to the field of communications, and in particular to a feedback indication method and apparatus. [Background technology]

[0003]

[0003] Wireless passive sensing (sensing for short) is a technology that senses the status of a target object without requiring the target object to carry a signal source such as an electronic label.

[0004]

[0004] Specifically, devices in the sensing process may include a transmitting device and a receiving device. The transmitting device and the receiving device may be two different devices. The transmitting device can transmit a measurement signal, such as a null data packet (NDP). Correspondingly, the receiving device can receive the measurement signal interfered with by the target object and determine the channel change, e.g., channel state information (CSI), between a preset reference measurement signal and the measurement signal interfered with by the target object. In this way, the receiving device can directly feed back the channel change to the transmitting device, so that the transmitting device can determine the status of the target object based on the channel change and perform functions such as motion monitoring, gesture recognition, and respiration and sleep monitoring.

[0005] However, with the development of technology, the number of devices and interactions in a single sensing process may increase, and the above-mentioned method in which the receiving device directly performs feedback to the transmitting device becomes increasingly inapplicable to multiple device and multiple interaction scenarios. Summary of the Invention

[0006]

[0006] The embodiments of the present application provide a feedback indication method and apparatus to provide more comprehensive feedback notification and improve the applicability of sensing technology in multiple device and multiple interaction scenarios.

[0007]

[0007] In order to achieve the aforementioned objectives, the following technical solutions are used in this application.

[0008] According to a first aspect, there is provided a feedback indication method. The method includes: a first device generating a first frame and transmitting the first frame. The first frame includes first information, and the first information indicates a feedback type of the first feedback and / or a feedback type of the second feedback. The first feedback and the second feedback are feedback at different levels.

[0009]

[0009] In a scenario of multiple devices and multiple interactions, it can be known from the method according to the first aspect that the first information indicates feedback types among multiple feedbacks at different levels, for example, the feedback type of the first feedback and / or the feedback type of the second feedback, which can indicate the feedback types more comprehensively and accurately, thereby improving the applicability of the sensing technology in the scenario of multiple devices and multiple interactions.

[0010] In a possible design solution, the first frame may further include mode indication information, wherein the mode indication information is such that the first information: Feedback type of the first feedback, Feedback type of the second feedback, or Feedback Type of First Feedback and Feedback Type of Second Feedback It is possible to notify that the In this way, a receiving device, such as a second device, can accurately determine the indication content of the first information based on the mode indication information, avoiding erroneous feedback caused by incorrectly determining the indication content of the first information, and thereby improving the stability of the measurement.

[0011]

[0011] Possible design solutions include the following feedback types for the first feedback: Uncompressed channel state information CSI, Compressed CSI, Null Data Packet NDP, Sensing measurement results, The feedback type determined by the sensing initiator, the feedback type determined by the sensing responder, Feedback type determined by the sensing transmitter, or Feedback type determined by the sensing receiver The sensing initiator may include at least one of the following: a first device; and the first device may know that it can flexibly determine the feedback type of the first feedback based on actual requirements.

[0012] 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 to reduce the data size of the first feedback, thereby improving communication efficiency and reducing communication overhead.

[0013] For another example, if the delay of the sensing measurement needs to be reduced, the first device may determine that the feedback type of the first feedback is NDP, so that the first device determines the sensing measurement result based on the NDP, avoiding the delay caused by determining the sensing measurement result by another device, such as a sensing responder, a sensing transmitter, or a sensing receiver, and improving measurement efficiency.

[0014] For yet another example, when the computational load of the first device needs to be reduced, the first device may determine that the feedback type is sensing measurement results, so that the first device can receive sensing measurement results from another device, and the first device does not need to calculate the sensing measurement results by the first device, reducing the computational load of the first device.

[0015] For yet another example, if a service of another device has a requirement for a feedback type of the first feedback, the first device may determine that the feedback type of the first feedback is determined by the other device, so that the first feedback can meet the service requirements of the other device and improve the reliability and stability of the service.

[0016]

[0012] Possible design solutions include feedback types for the second feedback: Uncompressed CSI, Compressed CSI, NDP, Sensing measurement results, The feedback type determined by the sensing initiator, the feedback type determined by the sensing responder, Feedback type determined by the sensing transmitter, or Feedback type determined by the sensing receiver The sensing initiator may include at least one of the following: the first device; the first device may know that it can flexibly determine the feedback type of the second feedback based on actual requirements.

[0017] 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 to reduce the data size of the second feedback, thereby improving communication efficiency and reducing communication overhead.

[0018] For another example, when the delay of the sensing measurement needs to be reduced, the first device may determine that the feedback type of the second feedback is NDP, so that the first device determines the sensing measurement result based on NDP, avoiding the delay caused by determining the sensing measurement result by another device and improving measurement efficiency.

[0019] For yet another example, when the computational load of the first device needs to be reduced, the first device may determine that the feedback type of the second feedback is a sensing measurement result, so that the first device can receive the sensing measurement result from another device, and the first device does not need to calculate the sensing measurement result by the first device, reducing the computational load of the first device.

[0020] For yet another example, if a service of another device has a requirement for a feedback type of the second feedback, the first device may determine that the feedback type of the second feedback is determined by the other device, so that the second feedback can meet the service requirements of the other device and improve the reliability and stability of the service.

[0021]

[0013] In a possible design solution, the first information may be carried in at least one of: signaling in the sensing setup phase or a sensing request message in the sensing measurement phase, thereby reducing communication overhead and improving communication efficiency.

[0022]

[0014] In a possible design solution, the first feedback and the second feedback are feedback at different levels, which means that the sending occasion of the first feedback is different from the second sending occasion of the second feedback, or the sending target of the first feedback is different from the sending target of the second feedback.

[0023]

[0015] In a possible design solution, the first information may include a first field and a second field. The first field may indicate a feedback type of the first feedback, and the second field may indicate a feedback type of the second feedback. In this way, when the first device only needs to notify the first feedback, the first device may transmit only the first field and not the second field. Similarly, when the first device only needs to notify the second feedback, the first device may transmit only the second field and not the first field. This can avoid transmitting redundant information, thereby reducing communication overhead and improving communication efficiency.

[0024] According to a second aspect, there is provided a feedback instruction method. The method includes: a second device receiving a first frame and analyzing the first frame. The first frame includes first information, and the first information indicates a feedback type of the first feedback and / or a feedback type of the second feedback. The first feedback and the second feedback are feedback at different levels.

[0025]

[0017] In a possible design solution, the first frame may further include mode indication information, which is provided by the first information: Feedback type of the first feedback, Feedback type of the second feedback, or Feedback Type of First Feedback and Feedback Type of Second Feedback It may indicate any one of the following:

[0026]

[0018] In a possible design solution, the feedback type of the first feedback is: Uncompressed CSI, Compressed CSI, NDP, Sensing measurement results, The feedback type determined by the sensing initiator, the feedback type determined by the sensing responder, Feedback type determined by the sensing transmitter, Feedback type determined by the sensing receiver and the sensing initiator may be a second device.

[0027]

[0019] Possible design solutions include feedback types for the second feedback: Uncompressed CSI, Compressed CSI, NDP, Sensing measurement results, The feedback type determined by the sensing initiator, the feedback type determined by the sensing responder, Feedback type determined by the sensing transmitter, Feedback type determined by the sensing receiver and the sensing initiator may be a second device.

[0028]

[0020] In a possible design solution, the first feedback and the second feedback being feedback at different levels may mean that the transmission occasion of the first feedback is different from the second transmission occasion of the second feedback, or that the transmission target of the first feedback is different from the transmission target of the second feedback.

[0029]

[0021] In a possible design solution, the first information does not indicate a feedback type of the first feedback, or indicates that the feedback type of the first feedback may include a feedback type determined by a sensing transmitter, and the sensing transmitter may be a second device. Thus, after the second device analyzes the first frame, the method may further include: the second device transmitting second information to a third device. The second information indicates that the feedback type of the first feedback is: Uncompressed CSI, Compressed CSI, NDP, Sensing measurement results, Feedback type determined by the sensing receiver The sensing receiver may be a third device. If the first information does not indicate that the feedback type of the first feedback is at least one of uncompressed CSI, compressed CSI, NDP, or sensing measurement result, i.e., if the first information does not indicate the content of the first feedback, the second information may notify the content of the first feedback in a supplementary manner to ensure that the third device can successfully transmit the first feedback, thereby ensuring the stability of the measurement.

[0030]

[0022] Optionally, the second information is carried in at least one of: signaling in the sensing measurement phase or signaling in the sensing report phase, which may reduce communication overhead and improve communication efficiency.

[0031] In a possible design solution, the first information may include a first field and a second field, where the first field may indicate a feedback type of the first feedback, and the second field may indicate a feedback type of the second feedback.

[0032] Optionally, a first field may be set to the feedback type of the first feedback: Uncompressed CSI, Compressed CSI, NDP, Sensing measurement results, or Feedback type determined by the sensing receiver and the sensing receiver may be a third device. After the second device analyzes the first frame, the method may further include: The second device may include transmitting only the first field to the third device.

[0033] Optionally, the second field may indicate that the feedback type of the second feedback includes a feedback type determined by a sensing receiver, which may be a third device. After the second device analyzes the first frame, the method further includes: This may include the second device transmitting only the second field to the third device.

[0034]

[0026] It can be known that when the second device only needs to notify the first feedback, the second device may transmit only the first field and not the second field. Similarly, when the second device only needs to notify the second feedback, the second device may transmit only the second field and not the first field. This can avoid transmitting redundant information, thereby reducing communication overhead and improving communication efficiency.

[0035]

[0027] Furthermore, after the step of the second device transmitting the second field to the third device, the method may further include: The method may include the second device receiving third information from the third device. The third information may indicate that a feedback type of the second feedback includes at least one of uncompressed CSI, compressed CSI, NDP, and sensing measurement results. If the second device does not determine that the feedback type of the second feedback is at least one of uncompressed CSI, compressed CSI, NDP, and sensing measurement results, i.e., if the second device does not determine the content of the second feedback, the third device may know that it can determine the content of the first feedback in a supplementary manner to ensure that the second device can successfully transmit the second feedback, thereby ensuring measurement stability.

[0036]

[0028] In a possible design solution, the first information is carried in at least one of: signaling in the sensing setup phase or signaling in the sensing measurement phase, potentially reusing the signaling to reduce communication overhead and improve communication efficiency.

[0037]

[0029] For the technical effects of the feedback instruction method according to the second aspect, please refer to the technical effects of the feedback instruction method according to the first aspect, and the details will not be described again in this specification.

[0038] According to a third aspect, there is provided a feedback instruction method, the method including: a first device transmitting fourth information and receiving first feedback and / or second feedback, the fourth information indicating that the first device needs to obtain the first feedback and / or the second feedback, the first feedback and the second feedback being feedback at different levels.

[0039]

[0031] It is possible for the first device to know from the method according to the third aspect that the first device may send the fourth information to the second device based on actual requirements, such as service requirements. In this way, the second device can send actually required feedback to the first device based on the fourth information, but not actually send unnecessary feedback, thereby avoiding sending redundant information, reducing communication overhead, and improving communication efficiency.

[0040]

[0032] In a possible design solution, the first feedback and the second feedback are feedback at different levels, which means that the transmission occasion of the first feedback is different from the second transmission occasion of the second feedback, or the transmission target of the first feedback is different from the transmission target of the second feedback.

[0041]

[0033] In a possible design solution, the fourth information can be carried in at least one of: signaling in the sensing setup phase or a sensing request message in the sensing measurement phase, thereby reusing the signaling and thereby reducing communication overhead and improving communication efficiency.

[0042] According to a fourth aspect, there is provided a feedback instruction method, the method including: a second device receiving fourth information; and transmitting first feedback and / or second feedback based on the fourth information. The fourth information indicates that the first device needs to obtain the first feedback and / or the second feedback, where the first feedback and the second feedback are feedback at different levels.

[0043]

[0035] In a possible design solution, the first feedback and the second feedback being feedback at different levels may mean that the transmission occasion of the first feedback is different from the second transmission occasion of the second feedback, or that the transmission target of the first feedback is different from the transmission target of the second feedback.

[0044]

[0036] In a possible design solution, the fourth information may be carried in at least one of: signaling in the sensing setup phase, or a sensing request message in the sensing measurement phase.

[0045]

[0037] For the technical effects of the feedback instruction method according to the fourth aspect, please refer to the technical effects of the feedback instruction method according to the third aspect, and the details will not be described again in this specification.

[0046] According to a fifth aspect, there is provided a feedback instruction method. The method includes: a first device generating fifth information and transmitting the fifth information. The fifth information instructs the second device to determine all configuration parameters of the NDPA, or the fifth information specifies configuration parameters of a portion of the NDPA, and the configuration parameters of another portion of the NDPA are determined by the second device.

[0047]

[0039] It can be seen from the method according to the fifth aspect that the configuration parameters of the NDPA may be determined through cooperation between the first device and the second device. In this way, the configuration parameters of the NDPA can be flexibly determined based on service requirements, so that the configuration parameters of the NDPA can meet the service requirements. For example, if a service of the first device requires the configuration parameters of the NDPA, the first device determines the configuration parameters of the NDPA. However, if a service of the second device requires the configuration parameters of the NDPA, the first device instructs the second device to determine at least some of the configuration parameters of the NDPA to meet the service requirements of the second device.

[0048]

[0040] In a possible design solution, the fifth information may be carried in one or more of: signaling during the sensing setup phase or sensing request messages during the sensing measurement phase, thereby reusing signaling and potentially reducing communication overhead and improving communication efficiency.

[0049] According to a sixth aspect, there is provided a feedback instruction method. The method includes: a second device receiving fifth information and analyzing the fifth information. The fifth information instructs the second device to determine all configuration parameters of the NDPA, or the fifth information specifies configuration parameters of a portion of the NDPA, and the configuration parameters of another portion of the NDPA are determined by the second device.

[0050]

[0042] In a possible design solution, the fifth information may be carried in one or more of: signaling in the sensing setup phase, or sensing request messages in the sensing measurement phase.

[0051]

[0043] For the technical effects of the feedback instruction method according to the sixth aspect, please refer to the technical effects of the feedback instruction method according to the fifth aspect, and the details will not be described again in this specification.

[0052] According to a seventh aspect, there is provided a feedback indication apparatus. The feedback indication apparatus includes a module, unit, or means configured to perform the method according to the first, third, or fifth aspects. The module, unit, or means may be implemented by hardware, software, or hardware executing corresponding software. The hardware or software may include one or more modules or units corresponding to the aforementioned functions. The feedback indication apparatus may be a first device, an apparatus including the first device, or an apparatus included in the first device, for example, a chip, according to the first, third, or fifth aspects.

[0053] According to an eighth aspect, there is provided a feedback indication apparatus. The feedback indication apparatus includes a module, unit, or means configured to perform the method according to the second, fourth, or sixth aspect. The module, unit, or means may be implemented by hardware, software, or hardware executing corresponding software. The hardware or software may include one or more modules or units corresponding to the aforementioned functions. The feedback indication apparatus may be a second device, an apparatus including the second device, or an apparatus included in the second device, for example, a chip, according to the second, fourth, or sixth aspect.

[0054] According to a ninth aspect, there is provided a feedback indication apparatus including a processor and a memory. The memory is configured to store computer instructions. Execution of the instructions by the processor enables the feedback indication apparatus to perform a method according to any one of the preceding aspects. The feedback indication apparatus may be a first device, an apparatus including the first device, or an apparatus included in the first device according to the first, third, or fifth aspects. Alternatively, the feedback indication apparatus may be a second device, an apparatus including the second device, or an apparatus included in the second device according to the second, fourth, or sixth aspects.

[0055] According to a tenth aspect, there is provided a communication system, the communication system including a first device according to the previous aspect and a second device according to the previous aspect.

[0056] According to an eleventh aspect, there is provided a computer-readable storage medium configured to store a computer program, the computer program comprising instructions used to perform a method according to any one of the first to sixth aspects.

[0057]

[0049] According to a twelfth aspect, there is provided a computer program comprising instructions used to carry out a method according to any one of the first to sixth aspects. [Brief explanation of the drawings]

[0058] [Figure 1]

[0050] Figure 1 is a schematic diagram of the architecture of the sensing process. [Figure 2]

[0051] Figure 2 is a schematic flow chart 1 of the sensing process. [Figure 3]

[0052] Figure 3 is a schematic flow chart 2 of the sensing process. [Figure 4]

[0053] Figure 4 is a schematic diagram of the architecture of the sensing process. [Figure 5]

[0054] Figure 5 is a schematic diagram of the architecture of a communication system according to an embodiment of the present application. [Figure 6]

[0055] Figure 6 is a schematic flowchart 1 of a feedback instruction method according to an embodiment of the present application. [Figure 7] FIG. 7 is a schematic diagram of the architecture of scenario A. [Figure 8]

[0057] Figure 8 is a schematic flowchart 1 of a feedback instruction method in scenario A according to an embodiment of the present application. [Figure 9]

[0058] Figure 9 is a schematic flowchart 2 of the feedback instruction method in scenario A according to an embodiment of the present application. [Figure 10]

[0059] FIG. 10 is a schematic flowchart 3 of the feedback instruction method in scenario A according to an embodiment of the present application. [Figure 11]

[0060] FIG. 11 is a schematic flowchart 4 of the feedback instruction method in scenario A according to an embodiment of the present application. [Figure 12]

[0061] FIG. 12 is a schematic diagram of the architecture for Scenario B. [Figure 13]

[0062] FIG. 13 is a schematic flowchart 1 of a feedback instruction method in scenario B according to an embodiment of the present application. [Figure 14]

[0063] FIG. 14 is a schematic flowchart 2 of a feedback instruction method in scenario B according to an embodiment of the present application. [Figure 15]

[0064] FIG. 15 is a schematic flowchart 3 of the feedback instruction method in scenario B according to an embodiment of the present application. [Figure 16]

[0065] FIG. 16 is a schematic flowchart 4 of the feedback instruction method in scenario B according to an embodiment of the present application. [Figure 17]

[0066] FIG. 17 is a schematic diagram of the architecture for Scenario C. [Figure 18]

[0067] FIG. 18 is a schematic flowchart 1 of a feedback instruction method in scenario C according to an embodiment of the present application. [Figure 19]

[0068] FIG. 19 is a schematic flowchart 2 of a feedback instruction method in scenario C according to an embodiment of the present application. [Figure 20]

[0069] FIG. 20 is a schematic flowchart 3 of the feedback instruction method in scenario C according to an embodiment of the present application. [Figure 21]

[0070] FIG. 21 is a schematic flowchart 4 of the feedback instruction method in scenario C according to an embodiment of the present application. [Figure 22]

[0071] FIG. 22 is a schematic flowchart 5 of a feedback instruction method in scenario C according to an embodiment of the present application. [Figure 23]

[0072] FIG. 23 is a schematic flowchart 2 of a feedback instruction method according to an embodiment of the present application. [Figure 24]

[0073] FIG. 24 is a schematic flowchart 5 of a feedback instruction method in scenario A according to an embodiment of the present application. [Figure 25]

[0074] FIG. 25 is a schematic flowchart 5 of a feedback instruction method in scenario B according to an embodiment of the present application. [Figure 26]

[0075] FIG. 26 is a schematic flowchart 6 of a feedback instruction method in scenario C according to an embodiment of the present application. [Figure 27]

[0076] FIG. 27 is a schematic flowchart 3 of a feedback instruction method according to an embodiment of the present application. [Figure 28]

[0077] FIG. 28 is a schematic diagram 1 of the structure of a feedback indication device applied to a transmitter according to an embodiment of the present application. [Figure 29]

[0078] FIG. 29 is a schematic diagram 1 of the structure of a feedback indication device applied to a receiver according to an embodiment of the present application. [Figure 30]

[0079] FIG. 30 is a schematic diagram 2 of the structure of a feedback indication device applied to a transmitter according to an embodiment of the present application. [Figure 31]

[0080] FIG. 31 is a schematic diagram 2 of the structure of a feedback indication device applied to a receiver according to an embodiment of the present application. [Figure 32]

[0081] FIG. 32 is a schematic diagram 3 of the structure of a feedback indication device applied to a transmitter according to an embodiment of the present application. [Figure 33]

[0082] FIG. 33 is a schematic diagram 3 of the structure of a feedback indication device applied to a receiver according to an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0059]

[0083] The technical terms used in the embodiments of the present application will be explained below.

[0060]

[0084] 1. Sensing Process

[0085] A sensing process, or a sensing session, may include multiple roles, such as a sensing initiator, a sensing responder, a sensing transmitter, and a sensing receiver. In a sensing process, the sensing initiator is configured to start the sensing process, the sensing responder is configured to participate in the sensing process initiated by the sensing initiator, the sensing transmitter is configured to initiate sensing measurements in the sensing process, e.g., to transmit an NDP, and the sensing receiver is configured to determine sensing measurement results in response to the sensing measurements, such as CSI, and feed back the sensing measurement results to the sensing initiator. It can be seen that the functions of the aforementioned multiple roles do not conflict with each other. In other words, in a sensing process, a device may have one or more of the aforementioned roles. For example, the sensing initiator, sensing responder, sensing transmitter, and sensing receiver may be the same device, or may be two different devices. For example, as shown in FIG. 1, the devices in the sensing process include device A and device B. Device A may be the sensing initiator of the sensing transmitter, and device B may be the sensing responder of the sensing receiver. For ease of understanding, the following uses device A and device B as an example to specifically describe the aforementioned sensing process.

[0061]

[0086] For example, FIG. 2 is a schematic flow chart of the aforementioned sensing process, and FIG. 3 is a schematic flow chart 2 of the aforementioned sensing process.

[0062]

[0087] As shown in Figure 2, the aforementioned sensing process may include the following steps:

[0063]

[0088] S201: Device A and device B exchange signaling to set up a sensing process.

[0064]

[0089] During the sensing setup phase, device A and device B may exchange signaling. As shown in Figure 3, device A sends a sensing setup request message to device B, and device B sends a sensing setup reception message to device A to inform each other of their roles in the sensing process. For example, device A is the sensing initiator and sensing transmitter, and device B is the sensing responder and sensing receiver, and they set up the sensing process or sensing session.

[0065]

[0090] S202: Device A sends a null data packet announcement (NDPA).

[0066]

[0091] As shown in Figure 3, after the sensing session is set up, a sensing measurement phase may begin. During the sensing measurement phase, device A may send an NDPA at a certain time point, e.g., a first time point. The NDPA instructs device A to perform sensing measurements at a second time point after the first time point, e.g., in the next frame that is a short interframe space (SIFS) after the NDPA, and transmits a null data packet (NDP) and a configuration instructing the NDP, such as a long training field (LTF), so that device B can receive and process the NDP at the second time point.

[0067]

[0092] S203: Device A sends an NDP.

[0068]

[0093] S204: Device B determines feedback 1.

[0069]

[0094] Device B may determine feedback, e.g., Feedback 1, that needs to be sent to device A based on a pre-configured feedback type. The feedback type may be used to determine the content of the feedback, including one or more of CSI, e.g., compressed CSI and uncompressed CSI, sensing measurement results, or NDP. Specifically, if the feedback type includes CSI, device B may determine Feedback 1, i.e., CSI, based on the NDP. If the feedback type includes sensing measurement results, device B may determine Feedback 1, i.e., sensing measurement results, which may be CSI, e.g., whether the target object is moving, the type of movement, or whether the target object is sleeping, based on the currently determined CSI and the diachronically determined CSI. If the feedback type includes NDP, device B may determine Feedback 1, i.e., NDP, based on the aforementioned NDP configuration.

[0070]

[0095] S205: Device A transmits a feedback request (feedback trigger) message.

[0071]

[0096] As shown in FIG. 3, after sending the NDP, device A may enter a sensing reporting phase. In the sensing reporting phase, device A may send a feedback request message at a third time point, e.g., in the next frame one SIFS after the NDP. The feedback request message may instruct device B to perform feedback, e.g., send Feedback 1, at a fourth time point after the third time point, e.g., in the next frame one SIFS after the feedback request message.

[0072]

[0097] S206: Device B sends Feedback 1 to Device A.

[0073]

[0098] Device B may send Feedback 1 to Device A at a fourth time. Feedback 1 may include one or more of the CSI, the sensing measurement, or the NDP. In this manner, Device A may obtain or determine the sensing measurement of the target object based on Feedback 1.

[0074]

[0099] In conclusion, based on the procedures shown in Figures 2 and 3, when device A is the sensing initiator of the sensing transmitter and device B is the sensing responder of the sensing receiver, it can be known that there is only one feedback, e.g., feedback 1 sent by device B to device A. The feedback type of feedback 1 can also be determined. For example, device B determines the feedback type of feedback 1. Therefore, in other words, the current feedback method can only determine the feedback type of one feedback. However, if the sensing process requires more devices or more interactions, multiple feedbacks may exist. For example, as shown in Figure 4, if the devices in the sensing process include device A, device B, and device C, and device A is the sensing initiator, device B is the sensing responder of the sensing transmitter, and device C is the sensing responder of the sensing receiver, two feedbacks are required. For example, device B needs to send one feedback, e.g., Feedback 1, to device A, and device C needs to send another feedback, e.g., Feedback 2, to device B. However, when the current feedback scheme is used, it is only possible to determine the feedback type of one feedback, e.g., Feedback 1, but not the feedback type of the other feedback, e.g., Feedback 2. In other words, the current feedback scheme is no longer applicable to multi-feedback scenarios with multiple devices and multiple interactions.

[0075]

[0100] The technical solutions of the present application will be described below with reference to the accompanying drawings.

[0076]

[0101] The technical solutions in the embodiments of the present application may be applied to various communication systems, for example, wireless fidelity (Wi-Fi) systems, vehicle-to-everything (V2X) communication systems, device-to-device (D2D) communication systems, vehicular internet communication systems, fourth generation (4G) mobile communication systems such as long term evolution (LTE) systems and worldwide interoperability for microwave access (WiMAX) communication systems, fifth generation (5G) mobile communication systems such as new radio (NR) systems, and future communication systems such as sixth generation (6G) mobile communication systems.

[0077]

[0102] All aspects, embodiments, or features are presented in this application by describing systems that may include multiple devices, elements, modules, etc. It is to be appreciated and understood that each system may include other devices, elements, modules, etc. and / or may not include all of the devices, elements, modules, etc. described with reference to the accompanying drawings. Also, combinations of these solutions may be used.

[0078]

[0103] It should be noted that in the embodiments of the present application, terms such as "example" and "for example" are used to indicate providing an example, illustration, or explanation. Any embodiment or design solution described in the present application as an "example" should not be described as being preferred or having more advantages than another embodiment or design solution. Strictly speaking, the term "example" is used to present a concept in a particular way.

[0079]

[0104] In the embodiments of the present application, the terms "information," "signal," "message," "channel," and "signaling" may sometimes be used interchangeably. It should be noted that the meanings expressed by the terms are consistent unless the differences between the terms are emphasized. The terms "of," "corresponding," and "corresponding" may sometimes be used interchangeably. It should be noted that the meanings expressed by the terms are consistent unless the differences between the terms are emphasized.

[0080]

[0105] In embodiments of the present application, subscripts, e.g., W1, may occasionally be incorrectly written in a non-subscript form, e.g., W1. The meaning expressed is consistent where the difference is not highlighted.

[0081]

[0106] The network architectures and service scenarios described in the embodiments of the present application are intended to more clearly explain the technical solutions in the embodiments of the present application, and do not constitute limitations on the technical solutions provided in the embodiments of the present application. Those skilled in the art will know that with the evolution of network architectures and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application can also be applied to similar technical problems.

[0082]

[0107] In order to facilitate the understanding of the embodiments of the present application, firstly, the communication system shown in Fig. 5 is used as an example to describe in detail the communication system applicable to the embodiments of the present application. For example, Fig. 5 is a schematic diagram of the architecture of a communication system to which the feedback instruction method according to the embodiments of the present application is applied.

[0083]

[0108] 5, the communication system includes a plurality of devices, such as a first device, a second device, and a third device. At least one of the plurality of devices, e.g., the first device, may determine the feedback types of all or some of the feedbacks, and the remaining feedbacks, e.g., feedback types not determined by the at least one device, may be determined by another device, e.g., a device other than the first device among the plurality of devices, e.g., the second device.

[0084]

[0109] Specifically, a first device, a second device, and a third device are used as an example, and the second device may be separately connected to the first device and the third device. Optionally, the third device may be further connected to the first device. Note that any one of the first device, the second device, and the third device may be a network device or a terminal device. This is not limited thereto.

[0085]

[0110] A network device is a device, or a chip or system of chips that may be located within a device, that is located on the network side of a communication system and has wireless transceiver functionality, including, but not limited to, access points (APs), evolved NodeBs (eNBs), radio network controllers (RNCs), NodeBs (NBs), base station controllers (BSCs), base transceiver stations (BTSs), home base stations (e.g., Home Evolved NodeBs or Home NodeBs (HNBs)), baseband units (BBUs), wireless relay nodes, wireless backhaul nodes, and transmission and reception points (TRPs or TPs) in wireless fidelity (Wi-Fi) systems, such as home gateways, routers, servers, switches, and bridges. The network device may alternatively be a gNB or transmission point (TRP or TP) in a 5G system, such as a new radio (NR) system, or an antenna panel or a group of antenna panels (including multiple antenna panels) in a base station of a 5G system. The network device may alternatively be a network node constituting a gNB or transmission point, such as a baseband unit (BBU), a distributed unit (DU), or a road side unit (RSU) with base station functionality.

[0086]

[0111] A terminal device is a terminal that accesses a communication system and has wireless transceiver functionality, or a chip or chip system that may be located in a terminal. A terminal device may also be referred to as a user equipment, access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment. In embodiments of the present application, the terminal device may be a mobile phone, a tablet computer (Pad), a computer with wireless transmission and reception functionality, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, an in-vehicle terminal, an RSU with terminal functionality, etc.

[0087]

[0112] It should be noted that the feedback instruction method provided in the embodiments of the present application can be applied to two or three devices, such as between the first device and the second device, or between the first device, the second device and the third device, as shown in Fig. 5. For specific implementation, please refer to the following method embodiments, and the details will not be described here.

[0088]

[0113] It should be noted that the solutions in the embodiments of the present application may be applied to other communication systems, and the corresponding names may be replaced with the names of corresponding functions in other communication systems.

[0089]

[0114] It should be understood that Figure 5 is merely a simplified schematic diagram of one example for ease of understanding, and the communication system may further include other network devices and / or other terminal devices not shown in Figure 5.

[0090]

[0115] The feedback instruction method provided in the present application may include multiple embodiments, for example, embodiment 1, embodiment 2, and embodiment 3. Hereinafter, the embodiments of the feedback instruction method will be described in detail with reference to FIGS.

[0091]

[0116] Embodiment 1 For example, FIG. 6 is a schematic flowchart 1 of a feedback instruction method according to an embodiment of the present application. The feedback instruction method is applicable to communication between three devices shown in FIG. 5, for example, a first device, a second device, and a third device. Any of the first device, the second device, and the third device may be one or more of: a sensing initiator, a sensing responder, a sensing transmitter, or a sensing receiver. For ease of understanding, this embodiment of the present application uses an example in which the sensing initiator is the first device, the sensing transmitter and the sensing responder are the second device, the second device is the sensing responder of the sensing transmitter, and the sensing receiver and the sensing responder are the third device, or the third device is the sensing responder of the sensing receiver. This is not limited thereto.

[0092]

[0117] As shown in FIG. 6, the feedback instruction method may include the following steps:

[0093]

[0118] S601: A first device generates a first frame.

[0094]

[0119] The first frame may be frame structure data, and the frame structure data may include first information, which may indicate feedback types of all feedbacks or feedback types of some feedbacks, for example, a feedback type of a first feedback and / or a feedback type of a second feedback.

[0095]

[0120] The first feedback and the second feedback may be feedback generated in a single sensing process and may be feedback at different levels. Specifically, in one aspect, the first feedback and the second feedback being feedback at different levels may mean that the transmission occasion of the first feedback is different from the transmission occasion of the second feedback. For example, if the first feedback is transmitted before the second feedback, the first feedback may be first-level feedback, and the second feedback may be second-level feedback. Conversely, if the second feedback is transmitted before the first feedback, the second feedback may be first-level feedback, and the first feedback may be second-level feedback. Alternatively, in another aspect, the first feedback and the second feedback being feedback at different levels may mean that the transmission target of the first feedback is different from the transmission target of the second feedback. For example, based on the connection relationship shown in FIG. 5, it can be seen that the first feedback may be feedback transmitted by a third device to the second device, or feedback transmitted by a sensing responder of the sensing receiver to a sensing responder of the sensing transmitter. Alternatively, optionally, if the first device is connected to a third device, the first feedback may be feedback transmitted by the third device to the first device, or feedback transmitted by a sensing responder of the sensing receiver to a sensing initiator. In this way, the first feedback may be considered as first-level feedback. The second feedback may be feedback transmitted by the second device to the first device, or feedback transmitted by a sensing responder of the sensing transmitter to a sensing initiator.In this way, the second feedback can be considered as a second level of feedback.

[0096]

[0121] It should be understood that the above-mentioned levels of feedback are merely examples and are not intended as limitations. For example, when a first device may transmit multiple pieces of feedback continuously or discontinuously to the same device, such as a second device, the multiple pieces of feedback may be at the same level or different levels. Discontinuous transmission means that when a first device transmits multiple pieces of feedback, the first device also receives feedback from another device, for example, a third device. As another example, when a first device transmits feedback to multiple devices, for example, a second device and a third device separately, the feedback may be at the same level or different levels. Also, the level of feedback is not limited to two levels. There may be more levels, such as three or four levels.

[0097]

[0122] It should be understood that the first feedback and the second feedback are used as examples in this embodiment of the present application, and are not limited thereto. For example, all the above feedbacks may further include a third feedback, a fourth feedback, and a fifth feedback. For specific implementations, please refer to the relevant descriptions of the first feedback and the second feedback. The details will not be described again here.

[0098]

[0123] The feedback type of the first feedback may include at least one of the following: uncompressed CSI, compressed CSI, NDP, a sensing measurement result, a feedback type determined by a sensing initiator, a feedback type determined by a sensing responder, a feedback type determined by a sensing transmitter, or a feedback type determined by a sensing receiver. Alternatively, optionally, the feedback type of the first feedback may further include a feedback type determined by any device, where the sensing measurement result may be whether an amount or degree of change in CSI exceeds a threshold. Furthermore, the any device may be at least one of: a sensing initiator, a sensing responder, a sensing transmitter, or a sensing receiver.

[0099]

[0124] Therefore, with respect to the first feedback, it can be known that the first device may flexibly determine a feedback type of the first feedback based on actual requirements. For example, when communication efficiency needs to be improved, the first device may determine that the feedback type of the first feedback is compressed CSI to reduce the data size of the first feedback, thereby improving communication efficiency and reducing communication overhead.

[0100] For another example, if the delay of the sensing measurement needs to be reduced, the first device may determine that the feedback type of the first feedback is NDP, thereby allowing the first device to determine the sensing measurement result based on NDP to avoid the delay caused by determining the sensing measurement result by another device, such as a sensing responder, a sensing transmitter, or a sensing receiver, and improve measurement efficiency.

[0101] For yet another example, if the computational load of the first device needs to be reduced, the first device may determine that the feedback type is sensing measurement results, so that the first device can receive sensing measurement results from another device, reducing the computational load of the first device without requiring the sensing measurement results to be calculated by the first device.

[0102] For yet another example, if a service of another device has a requirement for a feedback type of the first feedback, the first device may determine that the feedback type of the first feedback is determined by the other device, so that the first feedback can meet the service requirements of the other device and improve the reliability and stability of the service.

[0103]

[0125] The feedback type of the second feedback may include at least one of the following: uncompressed CSI, compressed CSI, NDP, sensing measurement results, a feedback type determined by the sensing initiator, a feedback type determined by the sensing responder, a feedback type determined by the sensing transmitter, or a feedback type determined by the sensing receiver. Alternatively, optionally, the feedback type of the second feedback may further include a feedback type determined by some device, which may also be at least one of: the sensing initiator, the sensing responder, the sensing transmitter, or the sensing receiver.

[0104]

[0126] Therefore, with respect to the second feedback, the first device can know that it is also possible to flexibly determine the feedback type of the second feedback based on actual requirements.

[0105] 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 to reduce the data size of the second feedback, thereby improving communication efficiency and reducing communication overhead.

[0106] For another example, if the delay of the sensing measurement needs to be reduced, the first device may determine that the feedback type of the second feedback is NDP, so that the first device determines the sensing measurement result based on NDP to avoid the delay caused by determining the sensing measurement result by another device and improve measurement efficiency.

[0107] For yet another example, when the computational load of the first device needs to be reduced, the first device may determine that the feedback type of the second feedback is a sensing measurement result, whereby the first device can receive the sensing measurement result from another device, and the first device no longer needs to calculate the sensing measurement result by the first device, thereby reducing the computational load of the first device.

[0108] For yet another example, if a service of another device has a requirement for a feedback type of the second feedback, the first device may determine that the feedback type of the second feedback is determined by the other device, so that the second feedback can meet the service requirements of the other device and improve the reliability and stability of the service.

[0109]

[0127] Furthermore, with regard to the various feedback types of the first feedback and the various feedback types of the second feedback, the above-mentioned indication manner of the first information may specifically be any one of the following manners:

[0110]

[0128] Method 1: The first information is indicating only that the feedback type of the first feedback includes at least one of uncompressed CSI, compressed CSI, NDP, or sensing measurement results ("specific feedback type of the first feedback" for short); or only indicating that the feedback type of the second feedback includes at least one of uncompressed CSI, compressed CSI, NDP, or sensing measurement results ("specific feedback type of the second feedback" for short); or Indicate the specific feedback type of the second device and the specific feedback type of the first feedback.

[0111]

[0129] Method 2: The first information is Only indicate that the feedback type of the first feedback is a feedback type determined by the sensing transmitter, i.e., the feedback type of the first feedback is determined by the second device; Only indicate that the feedback type of the second feedback is a feedback type determined by the sensing transmitter, i.e., the feedback type of the second feedback is determined by the second device, or Indicates that both the feedback type of the first feedback and the feedback type of the second feedback are determined by the second device.

[0112]

[0130] Method 3: The first information is It only indicates that the feedback type of the first feedback is a feedback type determined by the sensing receiver, i.e., the feedback type of the first feedback is determined by the third device; Only indicate that the feedback type of the second feedback is a feedback type determined by the sensing receiver, i.e., the feedback type of the second feedback is determined by a third device, or Illustrate that both the feedback type of the first feedback and the feedback type of the second feedback are determined by a third device.

[0113]

[0131] Method 4: The first information indicates 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.

[0114]

[0132] Method 5: The first information indicates 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.

[0115]

[0133] Method 6: The first information indicates that a specific feedback type of the first feedback and a feedback type of the second feedback are determined by the second device.

[0116]

[0134] Method 7: The first information indicates that the specific feedback type of the second feedback and the feedback type of the first feedback are determined by the second device.

[0117]

[0135] Method 8: The first information indicates that a specific feedback type of the first feedback and a feedback type of the second feedback are determined by a third device.

[0118]

[0136] Method 9: The first information indicates that the specific feedback type of the second feedback and the feedback type of the first feedback are determined by the third device.

[0119]

[0137] Method 10: The first information indicates that the specific feedback type of the first feedback and the feedback type of the second feedback are feedback types determined by any one of the sensing responder, the sensing transmitter, and the sensing receiver, i.e., the feedback type of the second feedback is determined by any one of the second device and the third device.

[0120]

[0138] Method 11: The first information indicates 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 either the second device or the third device.

[0121]

[0139] Method 12: The first information indicates 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 either the second device or the third device.

[0122]

[0140] Method 13: The first information indicates that the specific feedback type of the second feedback and the feedback type of the first feedback are feedback types determined by any one of the sensing responder, the sensing transmitter, and the sensing receiver, i.e., the feedback type of the first feedback is determined by any one of the second device and the third device.

[0123]

[0141] Method 14: The first information indicates that the feedback type of the second feedback is determined by the second device, and that the feedback type of the first feedback is determined by either the second device or the third device.

[0124]

[0142] Method 15: The first information is indicating only that the feedback type of the first feedback is determined by either the second device or the third device; only indicating that the feedback type of the second feedback is determined by either the second device or the third device, or This indicates that the feedback type of the first feedback is determined by either the second device or the third device, and that the feedback type of the second feedback is determined by either the second device or the third device.

[0125]

[0143] The first device receives the plurality of indications of the first information: First, the device status, such as load or packet loss rate The status of the second device, The status of the third device, the service requirements of the first device; the service requirements of the second device, or Third-party device service requirements It should be noted that the determination may be based on one or more of the following, but this is not limited to this. Furthermore, for different application scenarios, the indication manner of the first information may also be different.

[0126] For example, if the service of the first device has requirements regarding a specific feedback type of feedback, the first information may specify the specific feedback type based on the service requirements to meet the service requirements of the first device and ensure the reliability of the service of the first device.

[0127] For another example, if the service of the first device does not have a requirement for a specific feedback type of the feedback, the first information may instruct the other device to determine the feedback type so that the feedback can meet the service requirements of the other device and ensure the reliability of the service of the other device.

[0128]

[0144] In the above methods 1 to 3, it should be understood that if the first information only indicates a specific feedback type of the first feedback, or only indicates that the feedback type of the first feedback is determined by the second device or the third device, the feedback type of the second feedback may be determined by default, for example, may be pre-defined or pre-set in the protocol.

[0129] Alternatively, the feedback type of the second feedback may be determined by another device, such as the second device or a third device. For example, the second device or the third device may transmit information to indicate a specific feedback type of the second feedback or to indicate that the feedback type of the second feedback is determined by the second device or the third device. For specific implementation details, see the related description in S603 below.

[0130] Similarly, if the first information indicates only a particular feedback type of the second feedback, or indicates only that the feedback type of the second feedback is determined by the second device or the third device, the feedback type of the first feedback may be determined by default, for example, may be predefined or pre-set in the protocol.

[0131] Alternatively, the feedback type of the first feedback may be determined by another device, such as the second device or the third device. For example, the second device or the third device may transmit information to indicate that the information may indicate a specific feedback type of the first feedback, or to indicate that the feedback type of the first feedback is determined by the second device or the third device. For specific implementation details, see the related description in S603 below.

[0132] In other words, if the first information indicates only a specific feedback type of some of all feedback, or indicates only that some feedback types of all feedback are to be determined by another device, the feedback types of the remaining feedback of all feedback, i.e., feedback not indicated by the first information, may be determined by default or may be determined by another device.

[0133]

[0145] It should be further understood that in Methods 10 to 15, the first information indicating that the feedback type of the first feedback is determined by either the second device or the third device may be understood as the first information not indicating the feedback type of the first feedback, and has the same specifying effect as the first information indicating only the feedback type of the second feedback in Methods 1 to 3. In other words, the first information indicates that the feedback type of the first feedback may be determined by default or by another device.

[0134] Similarly, in Methods 10 to 15, the first information indicating that the feedback type of the second feedback is determined by either the second device or the third device may be understood as the first information not indicating the feedback type of the second feedback, which has the same specifying effect as the first information indicating only the feedback type of the first feedback in Methods 1 to 3. In other words, the first information indicates that the feedback type of the second feedback may be determined by default or by another device.

[0135] However, in methods 1 to 3, the first information indicates only the feedback type of the first feedback or only the feedback type of the second feedback, and compared to methods 10 to 15 in which all feedback types are indicated, the instruction content carried in the first information may be reduced, thereby reducing the data size of the first information, reducing communication overhead, and improving communication efficiency.

[0136]

[0146] In summary, regarding the feedback type of the first feedback, the first information may include at least one of: uncompressed CSI, compressed CSI, NDP, or sensing measurement results, i.e., a specific feedback type of the first feedback; and / or It may indicate that the feedback type of the first feedback includes at least one of: a feedback type determined by the sensing initiator, a feedback type determined by the sensing responder, a feedback type determined by the sensing transmitter, a feedback type determined by the sensing receiver, or a feedback type determined by another device, i.e., a second device, a third device, or either the second device or the third device.

[0137] Similarly, for a feedback type of the second feedback, the first information may include at least one of: uncompressed CSI, compressed CSI, NDP, or sensing measurement results, i.e., a specific feedback type of the second feedback; and / or It may be indicated that the feedback type of the second feedback includes at least one of: a feedback type determined by the sensing initiator, a feedback type determined by the sensing responder, a feedback type determined by the sensing transmitter, a feedback type determined by the sensing receiver, or a feedback type determined by another device, i.e., a second device, a third device, or both the second device and the third device. Furthermore, in the following, the first feedback and the second feedback are used as examples to explain the indication principle of the first information.

[0138]

[0147] For example, the first information may include one or more fields, and each field may indicate a feedback type of a corresponding one of all the feedbacks. For example, the first information may include a first field and / or a second field. The first field may indicate a feedback type of the first feedback. Similarly, the second field may indicate a feedback type of the second feedback. In this way, when the first device only needs to indicate the first feedback, the first device may transmit only the first field and not the second field. Similarly, when the first device only needs to indicate the second feedback, the first device may transmit only the second field and not the first field. This may avoid transmitting redundant information, thereby reducing communication overhead and improving communication efficiency.

[0139]

[0148] For ease of understanding, the following uses the first field as an example for explanation, and for the specific implementation of the second field, please refer to the following related description of the first field.

[0140]

[0149] Specifically, the first field includes a plurality of bits, for example, 3 to 9 bits. In this manner, the first field may indicate the feedback type of the first feedback based on an index including a plurality of bits, or may indicate the feedback type of the first feedback based on a bitmap or bits of a plurality of bits, which will be described separately below.

[0141]

[0150] A. Index Instructions

[0151] Multiple bits may form different indexes, and different indexes may indicate different feedback types of the first feedback, as shown in Table 1 below.

[0142] Table 1

[0143] [Table 1]

[0152] It can be seen from Table 1 that the above index includes 5 bits and may indicate various feedback types as shown in the above Table 1. In this way, the first device can traverse Table 1 to determine an index corresponding to the feedback type that the first device wishes to specify, and generate first information including the index to specify the feedback type that the first device wishes to specify.

[0144]

[0153] For example, if the first device wants to specify that the feedback type of the first feedback is uncompressed CSI, the first device traverses Table 1 to generate first information carrying index 00000, specifying that the feedback type of the first feedback is uncompressed CSI.

[0145]

[0154] For another example, if the first device wants to specify that the feedback type of the first feedback includes uncompressed CSI and sensing measurement results, the first device traverses Table 1 to generate first information carrying index 00110, specifying that the feedback type of the first feedback includes uncompressed CSI and sensing measurement results.

[0146]

[0155] For yet another example, if a first device wants to specify that the feedback type of the first feedback is determined by the sensing transmitter (the sensing transmitter is a second device), the first device traverses Table 1 to generate first information carrying index 10001, specifying that the feedback type of the first feedback is determined by the sensing transmitter. In this case, because both the second device and the third device are sensing responders, or there are multiple sensing responders, the first device can know that it cannot determine the index by using the second device as a sensing responder, but must determine the index by using the second device as a sensing transmitter to avoid inaccurate determinations and erroneous indications.

[0147]

[0156] It should be understood that the indication manner of each index in the above-mentioned Table 1 is merely an example and is not intended as a limitation. For example, the index in Table 1 may indicate the respective feedback types of multiple feedbacks at different levels, such as indicating the feedback type of the first level feedback, e.g., the first feedback, as uncompressed CSI, and indicating the feedback type of the second level feedback, e.g., the second feedback, as compressed CSI. Furthermore, the order of the values ​​of the index in Table 1, i.e., ascending binary order, is merely an example and is not intended as a limitation. For example, the index in Table 1 may alternatively obtain values ​​in descending binary order, or may obtain values ​​randomly. This is not a limitation.

[0148]

[0157] It should be noted that the indication manner in the above Table 1 is merely an example and is not intended as a limitation. For example, the first information may further include multiple indexes, each index indicating a feedback type, for example, a feedback type of the first feedback and / or a feedback type of the second feedback, which may be determined by an Nth device corresponding to the index, where 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 (an N th For example, the hop count relationship of a link can be First device → Second device → Third device When specifying that the feedback type of the first feedback is determined by the third device, the first information transmitted by the first device to the second device may include a first index and a second index. The first index corresponds to the first device and indicates that the feedback type of the first feedback is determined by the second device (third device). The second index corresponds to the second device and indicates that the feedback type of the first feedback is determined by the first device (third device). In this way, after the second device receives the first information, the second device transmits the first information to the third device. The first information may include only the second index, which indicates that the feedback type of the first feedback is determined by the first device.

[0149]

[0158] It should be understood that if a practical application does not require a specific combination of various feedback types to be specified, it may be further shown in Table 2 below.

[0150] Table 2

[0151] [Table 2]

[0159] It can be seen that 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 amount of the index in Table 2 is smaller. Therefore, the communication overhead is reduced and communication efficiency can be improved.

[0152]

[0160] It should be further understood that in practical applications, if the combination of various specific feedback types and devices determining the feedback types does not need to be specified, it may be as shown in Table 3 below.

[0153] Table 3

[0154] [Table 3]

[0161] It can be seen that compared with the 4-bit index in Table 2, the data length of the index in Table 3 is further shortened to 3 bits, and as a result, the communication overhead is further reduced and the communication efficiency can be further improved.

[0155]

[0162] B. Bitmap Instructions

[0163] The first field contains multiple bits, each of which may indicate a feedback type, as shown in Table 4 below.

[0156] Table 4

[0157] [Table 4]

[0164] It can be seen from Table 4 that the bitmap in Table 4 can contain 9 bits. In left to right order, each of the 9 bits can indicate a feedback type. For example, The first bit may indicate whether the feedback type of the first feedback includes uncompressed CSI. When the first bit is 1, it indicates that uncompressed CSI is included, and when the first bit is 0, it indicates that uncompressed CSI is not included.

[0158] The second bit may indicate whether the feedback type of the first feedback includes compressed CSI. When the second bit is 1, it indicates that compressed CSI is included, and when the second bit is 0, it indicates that compressed CSI is not included.

[0159] The third bit can indicate whether the feedback type of the first feedback includes NDP. If the third bit is 1, it indicates that NDP is included; if the third bit is 0, it indicates that NDP is not included.

[0160] By analogy, the ninth bit can indicate whether the first information does not indicate a feedback type: if the ninth bit is 1, it indicates that the first information does not indicate a feedback type of the first feedback; if the ninth bit is 0, it indicates that the first information indicates a feedback type of the first feedback.

[0161]

[0165] Further, the first device may traverse Table 4 to determine a bitmap corresponding to the feedback type that the first device wishes to specify, thereby generating first information carrying a bitmap to specify the feedback type that the first device wishes to specify.

[0162]

[0166] For example, if the first device desires to specify that the feedback type of the first feedback is uncompressed CSI, the first device traverses Table 1 to generate first information carrying bitmap 10000000, specifying that the feedback type of the first feedback is uncompressed CSI.

[0163]

[0167] In another example, if the first device desires to specify that the feedback type of the first feedback includes uncompressed CSI and sensing measurement results, the first device traverses Table 1 to generate first information carrying bitmap 100100000, specifying that the feedback type of the first feedback includes uncompressed CSI and sensing measurement results.

[0164]

[0168] In yet another example, if a first device wants to specify that the feedback type of the first feedback is determined by the sensing transmitter (the second device is a sensing transmitter), the first device traverses Table 1 to generate first information carrying bitmap 000000100, specifying that the feedback type of the first feedback is determined by the sensing transmitter. In this case, because both the second device and the third device are sensing responders, the first device can know that it cannot determine the bitmap by using the second device as a sensing responder, but must determine the bitmap by using the second device as a sensing transmitter to avoid inaccurate determinations and erroneous specification.

[0165]

[0169] It should be understood that in practical applications, if a specific combination of various feedback types does not need to be specified, it may be as shown in Table 5 below.

[0166] Table 5

[0167] [Table 5]

[0170] Table 4 contains 21 bitmaps, while Table 5 contains only 9 bitmaps, so that the first device can know that it can determine the corresponding bitmap more quickly by traversing Table 5, thereby improving processing efficiency.

[0168]

[0171] It should be further understood that in practical applications, if the combination of various specific feedback types and devices determining the feedback types does not need to be specified, it may be as shown in Table 6 below.

[0169] Table 6

[0170] [Table 6]

[0172] It can be seen that the bitmap in Table 6 has 5 bits. Compared with the bitmap in Table 5 having 9 bits, the bitmap in Table 6 has a shorter data length and a smaller data amount. Therefore, the communication overhead can be reduced and the communication efficiency can be improved.

[0171]

[0173] It should be noted that the first feedback may be feedback sent by a third device to the second device, and the second feedback may be feedback sent by the second device to the first device. Therefore, after receiving the first feedback, the second device may determine the second feedback based on the first feedback. In other words, the second feedback is based on the first feedback. Therefore, the feedback type of the first feedback and the feedback type of the second feedback require a decision logic between the first feedback and the second feedback. For example, the decision logic is NDP → CSI → Sensing measurement results Based on this, if the feedback type of the first feedback is NDP, the feedback type of the second feedback may include one or more of 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 CSI or measurements, but does not include NDP.

[0172]

[0174] S602: A first device transmits a first frame, and a second device receives the first frame.

[0173]

[0175] The first frame includes first information, and the first information is Signaling during the sensing setup phase, such as the sensing setup request message and the sensing setup reception message, or Signaling during the sensing measurement phase, such as sensing request messages , potentially reusing signaling and thereby reducing communication overhead and improving communication efficiency.

[0174]

[0176] Furthermore, the first device may transmit a first frame, and as a result, the second device may receive the first frame. In this way, the second device may determine the feedback type of the first feedback and / or the feedback type of the second feedback based on the first information in the first frame. For specific implementation details, please refer to the related description in the second application scenario below. Details will not be described here.

[0175]

[0177] Optionally, in the first application scenario, the first frame may further include mode indication information, wherein the first information is: Feedback type of the first feedback, Feedback type of second feedback, or Feedback Type of First Feedback and Feedback Type of Second Feedback In this way, a receiving device, such as a second device, can accurately determine the indication of the first information based on the mode indication information, avoiding erroneous feedback caused by erroneously determining the indication of the first information, and thereby improving the stability of the measurement.

[0176]

[0178] Optionally, in the second application scenario, after S602, the feedback instruction method may further include step 1; Step 1: The second device transmits the second information and / or the second information to the third device, and the third device receives the first information and / or the second information from the second device.

[0177]

[0179] The second information may independently perform the designation, i.e., 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. Alternatively, the second information may be used together with the first information for instruction. For example, the second information may indicate a feedback type of another feedback, or may indicate that the feedback type of the other feedback is determined by another device. The other feedback may be feedback not indicated by the first information in all feedback, and / or the first information may indicate feedback determined by another device.

[0178]

[0180] A first feedback and a second feedback are used as examples. When the first information does not indicate the feedback type of the first feedback or indicates that the feedback type of the first feedback includes a feedback type determined by the sensing transmitter (second device), the second information may indicate any one of: a specific feedback type of the first feedback (including at least one of uncompressed CSI, compressed CSI, NDP, or sensing measurement result); the feedback type of the first feedback is determined by the sensing receiver, i.e., the feedback type of the first feedback is determined by a third device; or the sensing transmitter does not determine the feedback type of the first feedback (the feedback type of the first feedback is determined by some other device).

[0179] If the first information does not indicate the feedback type of the first feedback, or indicates that the feedback type of the second feedback includes a feedback type determined by the sensing transmitter (second device), the first information may further indicate any of the following: that the feedback type of the second feedback is determined by the sensing receiver, i.e., that the feedback type of the second feedback is determined by a third device; or that the sensing transmitter does not determine the feedback type of the second feedback (the feedback type of the second feedback is determined by some other device).

[0180]

[0181] It should be understood that for the specific implementation principle of the second information, please refer to the relevant description of the first information in S601. The details will not be described again in this specification. In addition, the first information and / or the second information sent by the second device may carry at least one of: signaling in a sensing measurement phase, such as an NDPA or an NDP, or signaling in a sensing report phase, such as a feedback request message, to reuse the signaling, thereby reducing communication overhead and improving communication efficiency.

[0181]

[0182] Furthermore, it can be seen from the related description in S601 that there may be multiple indication methods of the first information, for example, the above-mentioned methods 1 to 15. Therefore, the second device may decide to transmit the first information and / or the second information based on various indication methods of the above-mentioned methods 1 to 15. This will be described in detail below.

[0182]

[0183] Method 1

[0184] In a first implementation, when the first information indicates only a specific feedback type of the first feedback, the feedback type of the second feedback may be determined based on a protocol predefinition, for example, determined by the sensing transmitter, i.e., the second device. Thus, in one aspect, the second device forwards the first information (including the first field and the second field) to the third device based on the first information, or transmits only the first field but not the second field to specify the feedback type of the first feedback. In another aspect, the second device may determine, based on the status of the second device and / or the service requirements of the second device, that the specific feedback type of the second feedback or the feedback type of the second feedback is the feedback type determined by the sensing receiver, i.e., the feedback type of the second feedback is determined by the third device, and transmits the second information to the third device specifying that the feedback type of the second feedback is determined by the third device. In other words, in this case, the second device may transmit the first information and the second information to the third device. The first information and the second information may be transmitted in a packaged manner or separately. This is not limited thereto.

[0183]

[0185] In a second implementation, when the first information indicates only a specific feedback type of the second feedback (including at least one of uncompressed CSI, compressed CSI, NDP, or sensing measurement results), the feedback type of the first feedback may be determined, for example, based on a protocol predefinition determined by the second device. In this manner, the second device may determine, based on the status of the second device and / or the service requirements of the second device, that the specific feedback type of the first feedback or the feedback type of the first feedback is determined by the third device, and send the second information to the third device, thereby indicating that the specific feedback type of the first feedback or the feedback type of the first feedback is determined by the third device.

[0184]

[0186] In a third implementation, the first information indicates a specific feedback type of the first feedback and a specific feedback type of the second device. In this manner, the second device may forward the first information to the third device based on the first information, or may specify a specific feedback type of the first feedback by transmitting only the first field and not the second field.

[0185]

[0187] Method 2

[0188] In the fourth implementation, the first information only indicates that the feedback type of the first feedback is determined by the second device. Thus, in one aspect, the second device can determine, based on the first information, that the specific feedback type of the first feedback or the feedback type of the first feedback is determined by the third device and transmit the second information to the third device, thereby specifying that the specific feedback type of the first feedback or the feedback type of the first feedback is determined by the third device. In another aspect, for the second feedback not indicated by the first information, the second device can transmit the second information to the third device, and the feedback type of the second feedback is determined by the third device, as can be seen from the related description of the first implementation. In other words, in this case, the second information may specify that the specific feedback type of the first feedback or the feedback type of the first feedback is determined by the third device. Optionally, the second information may further indicate that a feedback type of the second feedback is determined by a third device.

[0186]

[0189] In the fifth implementation, the first information only indicates that the feedback type of the second feedback is determined by the second device. Thus, in one aspect, the second device may determine, based on the first information, that the specific feedback type of the second feedback or the feedback type of the second feedback is determined by the third device, and transmit the second information to the third device, thereby indicating that the feedback type of the second feedback is determined by the third device. In another aspect, for first feedback not indicated by the first information, the second device may transmit the second information to the third device, indicating that the specific feedback type of the first feedback or the feedback type of the first feedback is determined by the third device, as can be seen from the related description of the second implementation. In other words, in this case, the second information may indicate that the feedback type of the second feedback is determined by the third device. Optionally, the second information may further indicate a particular feedback type of the first feedback or that the feedback type of the first feedback is determined by a third device.

[0187]

[0190] In a sixth implementation, the first information indicates that both the feedback type of the first feedback and the feedback type of the second feedback are determined by the second device. In this manner, the second device can determine, based on the first information, that a specific feedback type of the first feedback or the feedback type of the first feedback is determined by the third device. Furthermore, the second device can further determine, based on the first information, that a specific feedback type of the second feedback or the feedback type of the second feedback is determined by the third device. Thus, the second device can send the second information to the third device to specify that the specific feedback type of the first feedback or the feedback type of the first feedback is determined by the third device. Optionally, the second information further indicates that the feedback type of the second feedback is determined by the third device.

[0188]

[0191] Method 3

[0192] In the seventh implementation, the first information only indicates that the feedback type of the first feedback is determined by the third device. Thus, in one aspect, the second device can forward the first information to the third device based on the first information, or can transmit only the first field and not the second field to indicate that the feedback type of the first feedback is determined by the third device. In another aspect, for the second feedback not specified by the first information, it can be seen from the related description in the first implementation that the second device can transmit the second information to the third device to indicate that the feedback type of the second feedback is determined by the third device.

[0189]

[0193] In the eighth implementation, the first information only indicates that the feedback type of the second feedback is determined by the third device. Thus, in one aspect, the second device can forward the first information to the third device based on the first information, or can transmit only the second field and not the first field to indicate that the feedback type of the second feedback is determined by the third device. In another aspect, for first feedback not specified by the first information, the second device can transmit the second information to the third device to indicate a specific feedback type of the first feedback or that the feedback type of the first feedback is determined by the third device, as can be seen from the related description in the second implementation.

[0190]

[0194] In a ninth implementation, the first information indicates that both the feedback type of the first feedback and the feedback type of the second feedback are determined by the third device. In this manner, the second device can forward the first information to the third device based on the first information 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.

[0191]

[0195] Method 4

[0196] The first information indicates that the feedback type of the first feedback is determined by the second device and that the feedback type of the second feedback is determined by the third device. Thus, in one aspect, the second device may determine, based on the first information, a specific feedback type of the first feedback or that the feedback type of the first feedback is determined by the third device, and transmit the second information to the third device, indicating that the specific feedback type of the first feedback or the feedback type of the first feedback is determined by the third device. In another aspect, the second device may forward the first information to the third device based on the first information, or may transmit only the second field but not the first field, indicating that the feedback type of the second feedback is determined by the third device.

[0192]

[0197] Method 5

[0198] The first information indicates that the feedback type of the second feedback is determined by the second device and that the feedback type of the first feedback is determined by the third device. Thus, in one aspect, the second device may determine, based on the first information, a specific feedback type of the second feedback or that the feedback type of the second feedback is determined by the third device, and send the second information to the third device, indicating that the feedback type of the second feedback is determined by the third device. In another aspect, the second device may forward the first information to the third device based on the first information, or may send only the first field but not the second field, indicating that the feedback type of the first feedback is determined by the third device.

[0193]

[0199] Method 6

[0200] The first information indicates that a specific feedback type of the first feedback and a feedback type of the second feedback are determined by the second device. Thus, in one aspect, the second device may forward the first information to the third device based on the first information, or may transmit only the first field but not the second field to indicate a specific feedback type of the first feedback. In another aspect, the second device may determine, based on the first information, a specific feedback type of the second feedback or that the feedback type of the second feedback is determined by the third device, and transmit the second information to the third device, indicating that the feedback type of the second feedback is determined by the third device.

[0194]

[0201] Method 7

[0202] The first information indicates that the specific feedback type of the second feedback and the feedback type of the first feedback are determined by the second device. In this way, the second device may determine, based on the first information, that the specific feedback type of the first feedback or the feedback type of the first feedback is determined by the third device, and transmit the second information to the third device, thereby indicating that the specific feedback type of the first feedback or the feedback type of the first feedback is determined by the third device.

[0195]

[0203] Method 8

[0204] The first information indicates that the specific feedback type of the first feedback and the feedback type of the second feedback are determined by the third device. In this manner, the second device may forward the first information to the third device based on the first information, indicating that the specific feedback type of the first feedback and the feedback type of the second feedback are determined by the third device.

[0196]

[0205] Method 9

[0206] The first information indicates a specific feedback type of the second feedback and a feedback type of the first feedback that are determined by the third device. In this manner, the second device may forward the first information to the third device based on the first information, or may transmit only the first field and not the second field to indicate that the feedback type of the first feedback is determined by the third device.

[0197]

[0207] Method 10

[0208] The first information indicates that the specific feedback type of the first feedback and the feedback type of the second feedback are determined by either the second device or the third device. Thus, in one aspect, the second device may forward the first information to the third device based on the first information, or may transmit only the first field and not the second field to indicate the specific feedback type of the first feedback. In another aspect, the second device may determine, based on the first information, that the specific feedback type of the second feedback and the feedback type of the second feedback are determined by the third device, or the second device does not determine the feedback type of the second feedback. If the feedback type of the second feedback is determined by the third device or if the second device does not determine the feedback type of the second feedback, the second device may further transmit the 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.

[0198]

[0209] Method 11

[0210] The first information may indicate that the feedback type of the first feedback is determined by the second device, and that the feedback type of the second feedback is determined by either the second device or the third device. Thus, in one aspect, the second device may determine, based on the first information, a specific feedback type of the first feedback or that the feedback type of the first feedback is determined by the third device, and transmit the second information to the third device, thereby indicating that the specific feedback type of the first feedback or the feedback type of the first feedback is determined by the third device. In another aspect, for the second feedback, the second device may transmit the second information to the third device, indicating 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, as can be seen from the related description of method 10 in the second application scenario. In other words, in this case, the second information may indicate a specific feedback type of the first feedback or that the feedback type of the first feedback is determined by the third device. Optionally, the second information may further indicate that the feedback type of the second feedback is determined by the third device, or that the second device does not determine the feedback type of the second feedback.

[0199]

[0211] Method 12

[0212] The first information indicates 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 either the second device or the third device. Thus, in one aspect, the second device may forward the first information to the third device based on the first information, or may transmit only the first field but not the second field, indicating that the feedback type of the first feedback is determined by the third device. In another aspect, for the second feedback, the second device may transmit the second information to the third device, indicating 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, as can be seen from the related description of method 10 in the second application scenario.

[0200]

[0213] Method 13

[0214] The first information indicates that the specific feedback type of the second feedback and the feedback type of the first feedback are determined by either the second device or the third device. Thus, the second device may determine, based on the first information, that the specific feedback type of the first feedback and the feedback type of the first feedback are determined by the third device, or the second device may not determine the feedback type of the first feedback and may send the second information to the third device to indicate that the specific feedback type of the first feedback and the feedback type of the first feedback are determined by the third device, or the second device may not determine the feedback type of the first feedback.

[0201]

[0215] Method 14

[0216] The first information indicates that the feedback type of the second feedback is determined by the second device and that the feedback type of the first feedback is determined by either the second device or the third device. Thus, in one aspect, the second device may determine, based on the first information, a specific feedback type of the second feedback or that the feedback type of the second feedback is determined by the third device, and transmit the second information to the third device, thereby indicating that the feedback type of the second feedback is determined by the third device. In another aspect, it can be seen from the related description of scheme 13 in the second application scenario that, for the first feedback, the second device may transmit the second information to the third device, indicating that the specific feedback type of the first feedback and the feedback type of the first feedback are determined by the third device, or that the second device does not determine the feedback type of the first feedback. In other words, in this case, the second information may indicate a specific feedback type of the first feedback and that the feedback type of the first feedback is determined by the third device, or that the second device does not determine the feedback type of the first feedback. Optionally, the second information may further indicate that the feedback type of the second feedback is determined by the third device.

[0202]

[0217] Method 15

[0218] In the tenth implementation, the first information only indicates that the feedback type of the first feedback is determined by either the second device or the third device. Thus, in one aspect, for the first feedback, the second device may transmit the second information to the third device to indicate that the specific feedback type of the first feedback and the feedback type of the first feedback are determined by the third device, or that the second device does not determine the feedback type of the first feedback. In another aspect, for the second feedback not indicated by the first information, the second device may transmit the second information to the third device to indicate that the feedback type of the second feedback is determined by the third device. In other words, in this case, the second information may indicate a specific feedback type of the first feedback and that the feedback type of the first feedback is determined by the third device, or that the second device does not determine the feedback type of the first feedback. Optionally, the second information may further indicate that the feedback type of the second feedback is determined by the third device.

[0203]

[0219] In an eleventh implementation, the first information only indicates that the feedback type of the second feedback is determined by either the second device or the third device. Thus, in one aspect, for the second feedback, the second device may send the 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 may not determine the feedback type of the second feedback. In another aspect, for the first feedback not indicated by the first information, the second device may send the second information to the third device to indicate a specific feedback type of the first feedback or that the feedback type of the first feedback is determined by the third device. In other words, in this case, the second information may indicate that the feedback type of the second feedback is determined by the third device, or the second device may not determine the feedback type of the second feedback. Optionally, the second information may further indicate a particular feedback type of the first feedback or that the feedback type of the first feedback is determined by a third device.

[0204]

[0220] In a twelfth implementation, the first information indicates that the feedback type of the first feedback is determined by either the second device or the third device, and that the feedback type of the second feedback is determined by either the second device or the third device. For a specific implementation of the first feedback, see the tenth implementation. For a specific implementation of the second feedback, see the eleventh implementation.

[0205]

[0221] In methods 1 to 15 in the second application scenario, it can be known that when the second device only needs to indicate the feedback type of the first feedback, the second device may transmit only the first field and not the second field. Similarly, when the second device only needs to indicate the feedback type of the second feedback, the second device may transmit only the second field and not the first field. This can avoid transmitting redundant information, thereby reducing communication overhead and improving communication efficiency.

[0206]

[0222] Optionally, referring to a second application scenario, in the second application scenario, after step 1, the feedback instruction method may further include step 2: the third device sends third information to the second device, and the second device receives the third information from the third device.

[0207]

[0223] The third information may indicate that the feedback type of the second feedback includes at least one of: uncompressed CSI, compressed CSI, NDP, or sensing measurement results, i.e., may indicate a specific feedback type of the second feedback, and may be carried in signaling in the sensing reporting phase, like the first feedback, to reuse signaling, thereby reducing communication overhead and improving communication efficiency.

[0208]

[0224] Specifically, referring to the relevant descriptions of Methods 1 to 15 and S601 in the second application scenario, it can be seen that if the first information and / or the second information sent by the second device to the third device indicates that the feedback type of the second feedback is determined by the third device, the third device may determine a specific feedback type of the second feedback based on the status of the third device and / or the service requirements of the third device, and send the third information to the second device, thereby indicating the specific feedback type of the second feedback. Note that if the first information and / or the second information sent by the second device to the third device further indicates that the feedback type of the first feedback is determined by the third device, the third device may further determine a specific feedback type of the first feedback based on the status of the third device and / or the service requirements of the third device.

[0209]

[0225] It should be understood that S601 and S602 and the first and second application scenarios are examples of interactions between a first device, a second device, and a third device and are not intended to be limiting. For example, the second device may generate first information and transmit the first information to the first device and the third device. In another example, the third device may generate first information and transmit the first information to the second device, so that the second device can transmit the first information to the first device.

[0210]

[0226] The above describes in detail the overall procedure of the feedback instruction method provided in this embodiment of the present application with reference to Fig. 6. Hereinafter, the procedure of the feedback instruction method shown in Fig. 6 in Scenario A to Scenario C will be described in detail with reference to Fig. 7 to Fig. 22.

[0211]

[0227] Scenario A

[0228] For example, FIG. 7 is a schematic diagram of the architecture of scenario A, and FIG. 8 is a schematic flowchart 1 of a feedback instruction method in scenario A. As shown in FIGS. 7 and 8, devices for performing the method may include a first device and a second device. The first device may be a sensing initiator of a sensing receiver. The second device may be one or more sensing responders of a sensing transmitter. In this case, the feedback instruction method may include two levels of feedback. One level of feedback is first feedback sent by the first device to the second device, and the other level of feedback is second feedback sent by the second device to the first device. In this case, the feedback type may be determined in three ways (Determination Methods 1 to 3).

[0212] Determination method 1: The first device determines the specific feedback types of the first feedback and the second feedback.

[0213] Determination method 2: The first device determines the specific feedback type of the first feedback, and the second device determines the specific feedback type of the second feedback.

[0214] Determination method 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.

[0215] The procedures corresponding to the above-mentioned determination methods 1 to 3 will be described in detail below.

[0216]

[0229] Determination method 1

[0230] 9 is a schematic flowchart 2 of the feedback instruction method in scenario A. As shown in FIG. 9, a sensing measurement stage and a sensing report stage are used as an example. The feedback instruction method may include the following steps:

[0217]

[0231] S901: A first device transmits a sensing request message to a second device, and the second device receives the sensing request message from the first device.

[0218]

[0232] 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 indicate a specific feedback type of the first feedback, for example, CSI. The second field may indicate a specific feedback type of the second feedback, for example, sensing measurement results. For specific implementation details, please refer to the relevant descriptions in S601 and S602. Details will not be described again here.

[0219]

[0233] Optionally, the sensing request message may further include the aforementioned mode indication information. For specific implementation, please refer to the relevant description in the first application scenario above. Details will not be described again here.

[0220]

[0234] S902: The second device sends an NDPA.

[0221]

[0235] As shown in FIG. 8, after receiving the sensing request message, the second device may transmit an NDPA based on the sensing request message. For example, after receiving the sensing request message, the second device transmits an NDPA after one SIFS. For specific implementation of the NDPA, please refer to the related description in S202. Details will not be described again here.

[0222]

[0236] S903: The second device sends an NDP.

[0223]

[0237] As shown in FIG. 8, after sending the NDPA, the second device may send an NDP one SIFS later.

[0224]

[0238] It should be noted that the NDPA and NDP sent by the second device may or may not carry the first information described above, and this is not limited thereto.

[0225]

[0239] S904: The first device transmits a first feedback to the second device, and the second device receives the first feedback from the first device.

[0226]

[0240] The first device may determine the first feedback, e.g., CSI, based on the particular feedback type indicated by the first field.

[0227]

[0241] Note that, as shown in Figure 8, since the first device is not only a sensing initiator but also a sensing receiver, the first device may send the first feedback to the second device, i.e., the sensing responder of the sensing transmitter. For example, after the NDP is sent, the first feedback is sent one SIFS later.

[0228]

[0242] S905: The second device transmits a second feedback to the first device, and the first device receives the second feedback from the second device.

[0229]

[0243] As shown in FIG. 8, the second device may determine the second feedback, i.e., the sensing measurement result, based on the first feedback, e.g., CSI, and a specific feedback type, e.g., the sensing measurement result, indicated by the second field. For specific implementation, please refer to the related description in the second application scenario above. Details will not be described again here. In this way, after receiving the first feedback, the second device may transmit the second feedback to the second device one SIFS later.

[0230]

[0244] Determination method 2

[0245] 10 is a schematic flowchart 3 of the feedback instruction method in scenario A. As shown in FIG. 10, a sensing measurement stage and a sensing report stage are used as an example. The feedback instruction method may include the following steps:

[0231]

[0246] S1001: A first device transmits a sensing request message to a second device, and the second device receives the sensing request message from the first device.

[0232]

[0247] The sensing request message may include a first field in the first information. The first field may indicate a specific feedback type of the first feedback, for example, CSI. For specific implementation details, please refer to the relevant descriptions in S601 and S602. Details will not be described again here.

[0233]

[0248] Optionally, the sensing request message may further include the aforementioned mode indication information. For specific implementation details, please refer to the relevant description in the first application scenario above. Details will not be described again here.

[0234]

[0249] S1002: The second device transmits an NDPA.

[0235]

[0250] S1003: The second device sends an NDP.

[0236]

[0251] For specific implementation of S1002, please refer to the related descriptions in S202 and S902. For specific implementation of S1003, please refer to the related descriptions in S202 and S903. Details will not be described again here.

[0237]

[0252] S1004: The first device transmits a first feedback to the second device, and the second device receives the first feedback from the first device.

[0238]

[0253] As shown in FIG. 8, the first device may determine the first feedback, e.g., CSI, based on the particular feedback type indicated by the first field, so that after the NDP is transmitted, the first feedback is transmitted to the second device one SIFS later.

[0239]

[0254] The first feedback may include a second field in the first information, which indicates that the feedback type of the second feedback is determined by the second device. For specific implementation, please refer to the relevant descriptions in S601 and S602. Details will not be described again here.

[0240]

[0255] In other words, the first feedback and the second feedback may be indicated separately, for example, the first feedback may be indicated by using a sensing request message, and the second feedback may be indicated by using the first feedback, thereby avoiding packet loss caused by excessively large data packets being transmitted at one time and improving communication reliability.

[0241]

[0256] It should be understood that the above separate indication methods are merely examples and are not intended to be limiting. For example, the first feedback and the second feedback may be indicated together. For example, a sensing request message may include a first field and a second field.

[0242]

[0257] S1005: The second device determines a specific feedback type of the second feedback based on the first information.

[0243]

[0258] The second device can determine a specific feedback type of the second feedback, e.g., a sensing measurement result, based on the second field in the first information. For specific implementation, please refer to the related description in the second application scenario above. Details will not be described again here. In this way, the second device can determine the second feedback, i.e., a sensing measurement result, based on the received first feedback, e.g., CSI, and the specific feedback type of the second feedback.

[0244]

[0259] S1006: The second device transmits second feedback to the first device, and the first device receives feedback from the second device.

[0245]

[0260] As shown in FIG. 8, after receiving the first feedback, the second device may send a second feedback to the second device one SIFS later.

[0246]

[0262] Determination method 3

[0262] Figure 11 is a schematic flowchart 4 of the feedback instruction method in scenario A. As shown in Figure 11, a sensing measurement stage and a sensing report stage are used as an example. The feedback instruction method may include the following steps:

[0247]

[0263] S1101: A first device transmits a sensing request message to a second device, and the second device receives the sensing request message from the first device.

[0248]

[0264] The sensing request message may include a first field and a second field in the aforementioned first information. The first field may indicate that the feedback type of the first feedback is determined by the second device, and the second field may indicate a specific feedback type of the second feedback, such as a sensing measurement result. For specific implementation details, please refer to the relevant descriptions in S601 and S602. Details will not be described again here.

[0249]

[0265] Optionally, the sensing request message may further include the aforementioned mode indication information. For specific implementation details, please refer to the relevant description in the first application scenario above. Details will not be described again here.

[0250]

[0266] S1102: The second device determines a specific feedback type of the first feedback based on the first information.

[0251]

[0267] After receiving the sensing request message, the second device may determine a specific feedback type of the first feedback, such as CSI, based on the first field in the first information. For specific implementation details, please refer to the relevant description in the second application scenario above. Details will not be described again here.

[0252]

[0268] S1103: The second device transmits an NDPA.

[0253]

[0269] S1104: The second device sends an NDP.

[0254]

[0270] The second information may be carried in an NDP transmitted by the second device and may indicate a specific feedback type of the first feedback, but is not limited to this. For example, the second information may alternatively be carried in an NDP. In other words, S1102 is performed before S1104.

[0255]

[0271] For specific implementations of S1103 and S1104, please refer to the relevant descriptions in S202, S902 and S903, and the details will not be described again here.

[0256]

[0272] S1105: The first device transmits a first feedback to the second device, and the second device receives the first feedback from the first device.

[0257]

[0273] As shown in FIG. 8, the first device may determine the first feedback, e.g., CSI, based on the particular feedback type indicated by the second information, such that the first feedback is transmitted one SIFS after the NDP is transmitted.

[0258]

[0274] S1106: The second device transmits second feedback to the first device, and the first device receives feedback from the second device.

[0259]

[0275] As shown in FIG. 8, the second device may determine the second feedback, i.e., the sensing measurement result, based on the first feedback, e.g., CSI, and a specific feedback type, e.g., sensing measurement result, indicated by the second field. For specific implementation, please refer to the related description in the second application scenario above. Details will not be described again here. In this way, after receiving the first feedback, the second device can transmit the second feedback one SIFS later.

[0260]

[0276] It should be understood that in the above-mentioned scenario A, in addition to the above-mentioned determination methods A to C, there may be another determination method, for example, the second device may determine a specific feedback type of the first feedback and a specific feedback type of the second feedback. For specific implementations, please refer to the related descriptions in the above-mentioned determination methods A to C. Details will not be described again here.

[0261]

[0277] Scenario B

[0278] For example, FIG. 12 is a schematic diagram of an architecture of Scenario B, and FIG. 13 is a schematic flowchart 1 of a feedback instruction method in Scenario B. As shown in FIGS. 12 and 13, devices for performing the method may include a first device, a second device, and a third device. The second device may be connected to the first device and the third device, and optionally, the third device may be connected to the first device. The first device may be a sensing initiator, the second device may be a sensing responder of the sensing transmitter, the third device may be a sensing responder of the sensing receiver, and both the second device and the third device may be one or more. Thus, the feedback instruction method may include two levels of feedback. One level of feedback is first feedback sent by the third device to the first device or the second device, and the other level of feedback is second feedback sent by the second device to the first device. In this case, three decision methods (decision methods 4 to 6) are possible.

[0262] Determination method 4: The first device determines the specific feedback type of the first feedback and the specific feedback type of the second feedback.

[0263] Determination method 5: The first device determines the specific feedback type of the first feedback, and the second device determines the specific feedback type of the second feedback.

[0264] Determination method 6: 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.

[0265] The procedures corresponding to the above-mentioned determination methods 4 to 6 will be explained in detail below.

[0266]

[0279] Decision method 4

[0280] Figure 14 is a schematic flowchart 2 of the feedback instruction method in scenario B. As shown in Figure 14, a sensing measurement stage and a sensing report stage are used as an example. The feedback instruction method may include the following steps:

[0267]

[0281] S1401: A first device transmits a sensing request message to a second device, and the second device receives the sensing request message from the first device.

[0268]

[0282] 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 indicate a specific feedback type of the first feedback, for example, CSI. The second field may indicate a specific feedback type of the second feedback, for example, sensing measurement results. For specific implementation, please refer to the related descriptions in S601 and S602. Details will not be described again here.

[0269]

[0283] Optionally, the sensing request message may further include the aforementioned mode indication information. For specific implementation details, please refer to the relevant description in the first application scenario above. Details will not be described again here.

[0270]

[0284] S1402: The second device transmits an NDPA.

[0271]

[0285] As shown in Figure 13, after receiving the sensing request message, the second device may send an NDPA after one SIFS based on the sensing request message. For specific implementation, please refer to the related description in S202. Details will not be described again here.

[0272]

[0286] S1403: The second device sends an NDP.

[0273]

[0287] As shown in FIG. 13, after sending the NDPA, the second device may send an NDP one SIFS later.

[0274]

[0288] S1404: The second device transmits a feedback request message.

[0275]

[0289] As shown in Figure 13, after sending the NDP, the second device may send a feedback request message after one SIFS. For the specific implementation of the feedback request message, please refer to the related description in S205.

[0276]

[0290] S1405: The third device transmits a first feedback to the second device, and the third device receives the first feedback from the second device.

[0277]

[0291] S1406: The third device transmits a first feedback to the first device, and the third device receives the first feedback from the first device.

[0278]

[0292] The first device may determine the first feedback, e.g., CSI, based on the particular feedback type indicated by the first field.

[0279]

[0293] Note that S1405 and S1406 are optional steps. Specifically, as shown in FIG. 13 , in one aspect, when the third device is not directly connected to the first device, the third device may transmit the first feedback to the second device. For example, after receiving the NDP, the third device transmits the first feedback after one SIFS, i.e., S1405 is executed. Alternatively, in another aspect, when the third device is directly connected to the first device, the third device may transmit the first feedback to the first device, i.e., S1406 is executed.

[0280]

[0294] S1407: The second device transmits second feedback to the first device, and the first device receives the second feedback from the second device.

[0281]

[0295] As shown in FIG. 13, the second device may determine the second feedback, i.e., the sensing measurement result, based on the first feedback, e.g., CSI, and a specific feedback type, e.g., the sensing measurement result, indicated by the second field. For specific implementation, please refer to the related description in the second application scenario above. Details will not be described again here. In this way, after receiving the first feedback, the second device may transmit the second feedback after one SIFS.

[0282]

[0296] Decision method 5

[0297] Figure 15 is a schematic flowchart 3 of the feedback instruction method in scenario B. As shown in Figure 15, a sensing measurement stage and a sensing report stage are used as an example. The feedback instruction method may include the following steps:

[0283]

[0298] S1501: A first device transmits a sensing request message to a second device, and the second device receives the sensing request message from the first device.

[0284]

[0299] The sensing request message may include a first field and a second field in the first information. The first field may indicate a specific feedback type of the first feedback, such as CSI. The second field may indicate that the feedback type of the second feedback is determined by the second device. For specific implementation, please refer to the related descriptions in S601 and S602. Details will not be described again here.

[0285]

[0300] Optionally, the sensing request message may further include the aforementioned mode indication information. For specific implementation details, please refer to the relevant description in the first application scenario above. Details will not be described again here.

[0286]

[0301] S1502: The second device transmits an NDPA.

[0287]

[0302] S1503: The second device sends an NDP.

[0288]

[0303] S1504: The second device transmits a feedback request message.

[0289]

[0304] The first information (including the first field and the second field), or only the first field in the first information, may be carried in the NDP sent by the second device to indicate a specific feedback type of the first feedback, for example, but not limited to, alternatively, may be carried in the NDP and feedback request message sent by the second device.

[0290]

[0305] For specific implementation of S1502 to S1504, please refer to the related descriptions in S202, S205, and S1402 to S1404, and the details will not be described again here.

[0291]

[0306] S1505: The third device transmits a first feedback to the second device, and the third device receives the first feedback from the second device.

[0292]

[0307] S1506: The third device transmits a first feedback to the first device, and the third device receives the first feedback from the first device.

[0293]

[0308] The first device may determine the first feedback, e.g., CSI, based on the particular feedback type indicated by the first field.

[0294]

[0309] Note that S1505 and S1506 are optional steps. For specific implementation, please refer to the relevant descriptions in S1405 and S1406. The details will not be described again here.

[0295]

[0310] S1507: The second device determines a specific feedback type of the second feedback based on the first information.

[0296]

[0311] The second device may determine a specific feedback type of the second feedback, e.g., a sensing measurement result, based on the second field in the first information. For specific implementation, please refer to the related description in the second application scenario above. Details will not be described again here. In this way, the second device may determine the second feedback, i.e., a sensing measurement result, based on the specific feedback type of the second feedback and the received first feedback, e.g., CSI.

[0297]

[0312] It should be noted that the execution order between S1507 and S1502 to S1506 is not limited.

[0298]

[0313] S1508: The second device transmits second feedback to the first device, and the first device receives the second feedback from the second device.

[0299]

[0314] For the specific implementation of S1508, please refer to the relevant description in S1407, and the details will not be described again here.

[0300]

[0315] Determination method 6

[0316] Figure 16 is a schematic flowchart 4 of the feedback instruction method in scenario B. As shown in Figure 16, a sensing measurement stage and a sensing report stage are used as an example. The feedback instruction method may include the following steps:

[0301]

[0317] S1601: A first device transmits a sensing request message to a second device, and the second device receives the sensing request message from the first device.

[0302]

[0318] The sensing request message may include a first field and a second field in the first information. The first field may indicate that the feedback type of the first feedback is determined by the second device, and the second field may indicate a specific feedback type of the second feedback, such as a sensing measurement result. For specific implementation details, please refer to the relevant descriptions in S601 and S602. Details will not be described again here.

[0303]

[0319] Optionally, the sensing request message may further include the aforementioned mode indication information. For specific implementation details, please refer to the relevant description in the first application scenario above. Details will not be described again here.

[0304]

[0320] S1602: The second device determines a specific feedback type of the first feedback based on the first information.

[0305]

[0321] After receiving the sensing request message, the second device may determine a specific feedback type of the first feedback, such as CSI, based on the first field in the first information. For specific implementation details, please refer to the relevant description in the second application scenario above. Details will not be described again here.

[0306]

[0322] S1603: The second device transmits an NDPA.

[0307]

[0323] S1604: The second device sends an NDP.

[0308]

[0324] S1605: The second device transmits a feedback request message.

[0309]

[0325] The second information may be carried in an NDP (Non-Determining Protocol Address Protocol) sent by the second device to indicate a specific feedback type of the first feedback, but is not limited to this. For example, the second information may be carried in an NDP (Non-Determining Protocol Address Protocol) and a feedback request message sent by the second device. In other words, S1602 is performed before S1605.

[0310]

[0326] For specific implementation of S1603 to S1605, please refer to the related descriptions in S202, S205, and S1402 to S1404, and the details will not be described again here.

[0311]

[0327] S1606: The third device transmits a first feedback to the second device, and the third device receives the first feedback from the second device.

[0312]

[0328] S1607: The third device transmits a first feedback to the first device, and the third device receives the first feedback from the first device.

[0313]

[0329] The first device may determine the first feedback, e.g., CSI, based on the specific feedback type indicated by the first field. For specific implementation details, please refer to the related description in the second application scenario above. Details will not be described again here.

[0314]

[0330] Note that S1606 and S1607 are optional steps. For specific implementation, please refer to the relevant descriptions in S1405 and S1406. The details will not be described again here.

[0315]

[0331] S1608: The second device transmits second feedback to the first device, and the first device receives the second feedback from the second device.

[0316]

[0332] For the specific implementation of S1608, please refer to the relevant description in S1407, and the details will not be described again here.

[0317]

[0333] It should be understood that in the above-mentioned Scenario B, in addition to the above-mentioned Determination Methods 4 to 6, there may be other determination methods, for example, 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 third device determines the specific feedback type of the second feedback. For specific implementations, please refer to the relevant descriptions in the above-mentioned Determination Methods 4 to 6. Details will not be described again here.

[0318]

[0334] Scenario C

[0335] FIG. 17 is a schematic diagram of the architecture of scenario C, and FIG. 18 is a schematic flowchart 1 of the feedback instruction method in scenario C. As shown in FIGS. 17 and 18, devices for performing the method may include a first device, a second device, and a third device. The second device is connected to the first device and a third device. The first device may be a sensing initiator, the second device may be a sensing responder of the sensing receiver, the third device may be a sensing responder of the sensing transmitter, and both the second device and the third device may be one or more. Thus, the feedback instruction method may include three levels of feedback. The first level of feedback is first feedback sent by the second device to the third device, the second level of feedback is second feedback sent by the third device to the second device, and the third level of feedback is third feedback sent by the second device to the first device. In this case, there are four possible decision methods (decision methods 7 to 10).

[0319] Determination method 7: The first device determines a specific feedback type for the first feedback, a specific feedback type for the second feedback, and a specific feedback type for the third feedback.

[0320] Determination method 8: The first device determines a specific feedback type of the first feedback and a specific feedback type of the second feedback, and the second device determines a specific feedback type of the third feedback.

[0321] Determination method 9: The first device determines a specific feedback type for the first feedback and a specific feedback type for the third feedback, and the second device determines a specific feedback type for the second feedback.

[0322] Determination Method 10: The first device determines a specific feedback type of the second feedback and a specific feedback type of the third feedback, and the third device determines a specific feedback type of the first feedback. Below, the procedures corresponding to the above-mentioned Determination Methods 7 to 10 will be described in detail.

[0323]

[0336] Determination method 7

[0337] 19 is a schematic flowchart 2 of the feedback instruction method in scenario C. As shown in FIG. 19, a sensing measurement stage and a sensing report stage are used as an example. The feedback instruction method may include the following steps:

[0324]

[0338] S1901: A first device transmits a sensing request message to a second device, and the second device receives the sensing request message from the first device.

[0325]

[0339] 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 may indicate a specific feedback type of the first feedback, such as uncompressed CSI. The second field may indicate a specific feedback type of the second feedback, such as compressed CSI. The third field may indicate a specific feedback type of the third feedback, such as sensing measurement results. For specific implementation details, please refer to the related descriptions in S601 and S602. Details will not be described again here.

[0326]

[0340] Optionally, the sensing request message may further include the aforementioned mode indication information. For specific implementation, please refer to the relevant description in the first application scenario above. Details will not be described again here.

[0327]

[0341] S1902: The second device transmits a sensing request message to the third device, and the third device receives the sensing request message from the second device.

[0328]

[0342] 18, since the second device is a sensing receiver and the third device is a sensing transmitter, the second device needs to forward the sensing request message to the third device. For example, after receiving the sensing request message, the second device transmits the sensing request message one SIFS later. The sensing request message forwarded by the second device may include the first field, the second field, and the third field in the first information, or may include only the second field. This is not limited.

[0329]

[0343] S1903: The third device transmits an NDPA.

[0330]

[0344] As shown in Figure 18, after receiving the sensing request message, the third device may send an NDPA after one SIFS based on the sensing request message. For specific implementation, please refer to the relevant description of S202. Details will not be described again here.

[0331]

[0345] S1904: The third device sends an NDP.

[0332]

[0346] As shown in FIG. 18, after sending the NDPA, the third device may send an NDP one SIFS later.

[0333]

[0347] S1905: The third device transmits a feedback request message.

[0334]

[0348] As shown in Figure 18, after sending the NDP, the third device may send a feedback request message after one SIFS. For the specific implementation of the feedback request message, please refer to the related description in S205.

[0335]

[0349] S1906: The second device transmits a first feedback to the third device, and the third device receives the first feedback from the second device.

[0336]

[0350] As shown in FIG. 18, the third device may determine the first feedback, e.g., uncompressed CSI, based on the specific feedback type indicated by the first field. For specific implementation, please refer to the related description in the second application scenario above. Details will not be described again here. In this way, after receiving the feedback request message, the third device may transmit the first feedback after one SIFS.

[0337]

[0351] S1907: The third device transmits second feedback to the second device, and the second device receives the second feedback from the third device.

[0338]

[0352] As shown in FIG. 18, the second device may determine second feedback, i.e., compressed CSI, based on the first feedback, e.g., uncompressed CSI, and a specific feedback type, e.g., compressed CSI, indicated by the second field. For specific implementation, please refer to the related description in the second application scenario above. Details will not be described again here. In this way, after receiving the first feedback, the second device may transmit second feedback to the second device one SIFS later.

[0339]

[0353] S1908: The second device transmits third feedback to the first device, and the first device receives the third feedback from the second device.

[0340]

[0354] As shown in FIG. 18, the second device may determine the third feedback, i.e., the sensing measurement result, based on the second feedback, e.g., compressed CSI, and the specific feedback type, e.g., sensing measurement result, indicated by the aforementioned third field, and may transmit the third feedback after receiving the second feedback one SIFS later.

[0341]

[0355] Decision method 8 Figure 20 is a schematic flowchart 3 of the feedback instruction method in scenario C. As shown in Figure 20, a sensing measurement stage and a sensing report stage are used as an example. The feedback instruction method may include the following steps:

[0342]

[0357] S2001: A first device transmits a sensing request message to a second device, and the second device receives the sensing request message from the first device.

[0343]

[0358] The sensing request message includes a first field and a second field in the first information, and may further include a third field. The first field may indicate a specific feedback type of the first feedback, such as uncompressed CSI. The second field may indicate a specific feedback type of the second feedback, such as compressed CSI. The third field may indicate that the feedback type of the third feedback is determined by the second device. For specific implementation details, please refer to the relevant descriptions in S601 and S602. Details will not be described again here.

[0344]

[0359] Optionally, the sensing request message may further include the aforementioned mode indication information. For specific implementation details, please refer to the relevant description in the first application scenario above. Details will not be described again here.

[0345]

[0360] S2002: The second device transmits a sensing request message to the third device, and the third device receives the sensing request message from the second device.

[0346]

[0361] For the specific implementation of S2002, please refer to the related description in S1902, and the details will not be described again here.

[0347]

[0362] S2003: The third device transmits an NDPA.

[0348]

[0363] S2004: The third device sends an NDP.

[0349]

[0364] S2005: The third device transmits a feedback request message.

[0350]

[0365] S2006: The second device transmits a first feedback to the third device, and the third device receives the first feedback from the second device.

[0351]

[0366] S2007: The third device transmits second feedback to the second device, and the second device receives the second feedback from the third device.

[0352]

[0367] For specific implementation of S2003 to S2007, please refer to the relevant descriptions in S1903 to S1907, and the details will not be described again here.

[0353]

[0368] S2008: The second device determines a specific feedback type of the third feedback based on the first information.

[0354]

[0369] The second device may determine a specific feedback type of the third feedback, e.g., a sensing measurement result, based on the third field in the first information. For specific implementation, please refer to the relevant description in the second application scenario above. Details will not be described again here. In this way, the second device may determine the third feedback, i.e., the sensing measurement result, based on the specific feedback type of the third feedback and the received second feedback, e.g., CSI. Note that the execution order between S2003 to S2007 and S2008 is not limited.

[0355]

[0370] S2009: The second device transmits a third feedback to the first device, and the first device receives the third feedback from the second device.

[0356]

[0371] For the specific implementation of S2009, please refer to the related description in S1908, and the details will not be described again here.

[0357]

[0372] Determination method 9

[0373] Figure 21 is a schematic flowchart 4 of the feedback instruction method in scenario C. As shown in Figure 21, a sensing measurement stage and a sensing report stage are used as an example. The feedback instruction method may include the following steps:

[0358]

[0374] S2101: A first device transmits a sensing request message to a second device, and the second device receives the sensing request message from the first device.

[0359]

[0375] The sensing request message includes a first field and a second field in the first information, and may further include a third field. The first field may indicate a specific feedback type of the first feedback, for example, uncompressed CSI. The second field may indicate that the feedback type of the second feedback is determined by the second device. The third field may indicate a specific feedback type of the third feedback, for example, sensing measurement results. For specific implementation details, please refer to the relevant descriptions in S601 and S602. Details will not be described again here.

[0360]

[0376] Optionally, the sensing request message may further include the aforementioned mode indication information. For specific implementation details, please refer to the relevant description in the first application scenario above. Details will not be described again here.

[0361]

[0377] S2102: The second device determines a specific feedback type of the second feedback based on the first information.

[0362]

[0378] After receiving the sensing request message, the second device may determine a specific feedback type of the second feedback, such as compressed CSI, based on the second field in the first information. For specific implementation, please refer to the related description in the second application scenario above. Details will not be described again here. In this way, the second device may generate second information to indicate that it determines a specific feedback type of the second feedback.

[0363]

[0379] S2103: The second device transmits a sensing request message to the third device, and the third device receives the sensing request message from the second device.

[0364]

[0380] As shown in FIG. 18 , since the second device is a sensing receiver and the third device is a sensing transmitter, the second device needs to forward a sensing request message to the third device. For example, after receiving the sensing request message, the second device transmits a sensing request message one SIFS later. The sensing request message forwarded by the second device may include the second information, or may include only one of the first field, the second field, the third field, the first field and the second field, or the second field in the first information. This is not limited.

[0365]

[0381] S2104: The third device transmits an NDPA.

[0366]

[0382] S2105: The third device sends an NDP.

[0367]

[0383] S2106: The third device transmits a feedback request message.

[0368]

[0384] S2107: The second device transmits a first feedback to the third device, and the third device receives the first feedback from the second device.

[0369]

[0385] It should be understood that the second information may alternatively be carried in the first feedback sent by the second device to the third device, but this is not limited thereto. That is, S2102 is executed before S2107.

[0370]

[0386] S2108: The third device transmits a second feedback to the second device, and the second device receives the second feedback from the third device.

[0371]

[0387] S2109: The second device transmits a third feedback to the first device, and the first device receives the third feedback from the second device.

[0372]

[0388] For specific implementation of S2104 to S2109, please refer to the relevant descriptions in S1903 to S1908, and the details will not be described again here.

[0373]

[0389] Determination method 10

[0390] Figure 22 is a schematic flowchart 5 of the feedback instruction method in scenario C. As shown in Figure 22, a sensing measurement stage and a sensing report stage are used as an example. The feedback instruction method may include the following steps:

[0374]

[0391] S2201: A first device transmits a sensing request message to a second device, and the second device receives the sensing request message from the first device.

[0375]

[0392] The sensing request message includes a first field and a second field in the first information, and may further include a third field. The first field may indicate that the feedback type of the first feedback is determined by the third device. The second field may indicate a specific feedback type of the second feedback, such as compressed CSI. The third field may indicate a specific feedback type of the third feedback, such as sensing measurement results. For specific implementation details, please refer to the relevant descriptions in S601 and S602. Details will not be described again here.

[0376]

[0393] Optionally, the sensing request message may further include the aforementioned mode indication information. For specific implementation details, please refer to the relevant description in the first application scenario above. Details will not be described again here.

[0377]

[0394] S2202: The second device transmits a sensing request message to the third device, and the third device receives the sensing request message from the second device.

[0378]

[0395] 18, since the second device is a sensing receiver and the third device is a sensing transmitter, the second device needs to forward a sensing request message to the third device. For example, after receiving the sensing request message, the second device transmits the sensing request message one SIFS later. The sensing request message forwarded by the second device may include only any one of the first field, the second field, the third field, or the first field and the second field. This is not limited.

[0379]

[0396] S2203: The third device determines a specific feedback type of the first feedback based on the first information.

[0380]

[0397] After receiving the sensing request message, the third device may determine a specific feedback type of the first feedback, for example, uncompressed CSI, based on the first field in the first information. For specific implementation, please refer to the related description in the second application scenario above. Details will not be described again here. In this way, the third device may generate second information to indicate that the third device determines a specific feedback type of the first feedback.

[0381]

[0398] S2204: The third device transmits an NDPA.

[0382]

[0399] S2205: The third device transmits an NDP.

[0383]

[0400] S2206: The third device transmits a feedback request message.

[0384]

[0401] The second information may be carried in an NDP (Non-Determining Protocol Address Protocol) sent by the second device to indicate a specific feedback type of the first feedback, but is not limited to this. For example, the second information may be carried in an NDP and a feedback request message sent by the third device. That is, S2203 is performed before S2206.

[0385]

[0402] S2207: The second device transmits a first feedback to the third device, and the third device receives the first feedback from the second device.

[0386]

[0403] S2208: The third device transmits second feedback to the second device, and the second device receives the second feedback from the third device.

[0387]

[0404] S2209: The second device transmits third feedback to the first device, and the first device receives the third feedback from the second device.

[0388]

[0405] For specific implementation of S2204 to S2209, please refer to the relevant descriptions in S1903 to S1908, and the details will not be described again here.

[0389]

[0406] It should be understood that in the above-mentioned Scenario C, in addition to the above-mentioned Determination Methods 7 to 10, there may be other determination methods, for example, the second device determines a specific feedback type of the first feedback, a specific feedback type of the second feedback, and a specific feedback type of the third feedback, the second device determines a specific feedback type of the first feedback, and the third device determines a specific feedback type of the second feedback and a specific feedback type of the third feedback. For specific implementations, please refer to the relevant descriptions in the above-mentioned Determination Methods 7 to 10. Details will not be described again here.

[0390]

[0407] 6 to 22 that in a scenario of multiple devices and multiple interactions, the first information indicates feedback types of multiple feedbacks at different levels, for example, the feedback type of the first feedback and / or the feedback type of the second feedback, which can indicate the feedback types more comprehensively and accurately, thereby improving the applicability of the sensing technology in a scenario of multiple devices and multiple interactions.

[0391]

[0408] Embodiment 2 For example, Figure 23 is a schematic flowchart 2 of a feedback instruction method according to an embodiment of the present application. The feedback instruction method is applicable to communication between two of the three devices shown in Figure 5, for example, communication between the first device and the second device in the first, second, and third devices. The first device may be a sensing initiator, the second device may be a sensing responder of the sensing transmitter, and the third device may be a sensing responder of the sensing receiver.

[0392]

[0409] As shown in FIG. 23, the feedback instruction method may include the following steps:

[0393]

[0410] S2301: The first device transmits fourth information, and the second device receives the fourth information.

[0394]

[0411] The fourth information may indicate that the first device needs to obtain all feedback or part of the feedback, for example, the first feedback and / or the second feedback. For specific implementations of the first feedback and the second feedback, please refer to the first embodiment described above. The details will not be described again here.

[0395]

[0412] Specifically, the fourth information may include multiple bits, for example, 2 bits or 3 bits. In this way, the fourth information may indicate that the first device needs to obtain the first feedback and / or the second feedback based on an index including multiple bits or a bitmap of multiple bits, which will be described separately below.

[0396]

[0413] a. Index instruction

[0414] The bits may form various indexes, and different indexes may indicate that the first device needs to obtain the first feedback and / or the second feedback, as shown in Table 7 below.

[0397] Table 7

[0398] [Table 7]

[0415] It can be seen from Table 7 that the aforementioned index includes two bits and may indicate various feedbacks that the first device needs to obtain. In this way, the first device can traverse Table 7 to determine the index corresponding to the feedback that the first device needs to obtain, and generate fourth information carrying the index to notify that the first device needs to obtain the feedback.

[0399] For example, if the first device needs to obtain the first feedback, the first device traverses table 7 to generate fourth information carrying index 00, thereby specifying that the first device needs to obtain the first feedback.

[0400] In another example, when the first device needs to obtain second feedback, the first device traverses table 7 to generate fourth information carrying index 01, thereby specifying that the first device needs to obtain second feedback.

[0401] In yet another example, when the first device needs to obtain the first feedback and the second feedback, the first device traverses table 7 to generate fourth information carrying index 11, thereby specifying that the first device needs to obtain the first feedback and the second feedback.

[0402]

[0416] b.Bitmap instructions

[0417] The fourth information may include multiple bits, and each bit may indicate whether the first device needs to obtain corresponding feedback, as shown in Table 8 below.

[0403] Table 8

[0404] [Table 8]

[0418] It can be seen from Table 8 that the bitmap in Table 8 may include two bits. In left-to-right order, each of the two bits may indicate whether the first device needs to obtain corresponding feedback. For example, the first bit may indicate whether the first device needs to obtain first feedback. If the first bit is 1, it indicates that the first device needs to obtain first feedback, and if the first bit is 0, it indicates that the first device does not need to obtain first feedback. The second bit may indicate whether the first device needs to obtain second feedback. If the second bit is 1, it indicates that the first device needs to obtain second feedback, and if the second bit is 0, it indicates that the first device does not need to obtain second feedback. Thus, if both the first bit and the second bit are 1, it indicates that the first device needs to obtain first feedback and second feedback.

[0405]

[0419] Furthermore, the fourth piece of information is: Signaling during the sensing setup phase, such as the sensing setup request message and the sensing setup reception message, or Signaling during the sensing measurement phase, such as sensing request messages , thereby potentially reusing signaling and thereby reducing communication overhead and improving communication efficiency.

[0406]

[0420] Optionally, when the fourth information indicates that the first device needs to obtain the first feedback, the second device may further transmit the fourth information to the third device (not shown in FIG. 23 ). In this way, when the third device is directly connected to the first device, the third device may directly transmit the first feedback to the first device based on the fourth information, so that the first device can obtain the first feedback more quickly, reducing communication delay and improving communication efficiency.

[0407]

[0421] S2302. The second device transmits the first feedback and / or the second feedback based on the fourth information, and the first device receives the first feedback and / or the second feedback.

[0408]

[0422] After the first device sends the feedback request message, the second device may receive the first feedback from the third device.

[0409] If the fourth information indicates that the first device needs to obtain a portion of the feedback, for example, the first feedback, the second device may send the first feedback to the first device, i.e., forward the first feedback.

[0410] If the fourth information indicates that the first device needs to obtain a portion of the feedback, e.g., the second feedback, the second device may determine the second feedback, e.g., the sensing measurement result, based on the first feedback, e.g., the CSI, and transmit the second feedback to the second device.

[0411] If the fourth information indicates that the first device needs to obtain all feedback, for example, the first feedback and the second feedback, the second device determines the second feedback based on the first feedback, and then transmits the first feedback and the second feedback to the second device, for example, the first feedback and the second feedback may be transmitted in a packaged manner or separately.

[0412]

[0423] The above describes in detail the overall procedure of the feedback instruction method provided in this embodiment of the present application with reference to Fig. 23. Hereinafter, the procedure of the feedback instruction method shown in Fig. 23 in Scenario A to Scenario C will be described in detail with reference to Fig. 24 to Fig. 26.

[0413]

[0424] For example, Figure 24 is a schematic flowchart 5 of the feedback instruction method in scenario A. As shown in Figure 24, the aforementioned determination method 1, sensing measurement stage, and sensing reporting stage are used as an example. The feedback instruction method may include the following steps:

[0414]

[0425] S2401: A first device transmits a sensing request message to a second device, and the second device receives the sensing request message from the first device.

[0415]

[0426] The sensing request message may further carry the aforementioned fourth information. The fourth information may indicate that the first device needs to obtain the first feedback and the second feedback. For specific implementation, please refer to the related descriptions in S2301 and S2302. Details will not be described again here.

[0416]

[0427] S2402: The second device transmits an NDPA.

[0417]

[0428] S2403: The second device sends an NDP.

[0418]

[0429] S2404: The first device transmits a first feedback to the second device, and the second device receives the first feedback from the first device.

[0419]

[0430] S2405: The second device transmits second feedback to the first device, and the first device receives the second feedback from the second device.

[0420]

[0431] For specific implementation of S2401 to S2405, please refer to the relevant descriptions in S901 to S905, and the details will not be described again here.

[0421]

[0432] S2406: The second device transmits a first feedback to the first device, and the first device receives the first feedback from the second device.

[0422]

[0433] Referring to the related description in S2401, it can be known that the second device may send the first feedback to the first device based on the fourth information, for example, send the first feedback and the second feedback in a packaged manner. Note that, if the fourth information indicates 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 based on the fourth information without generating the second feedback.

[0423]

[0434] For example, Figure 25 is a schematic flowchart 5 of the feedback instruction method in scenario B. As shown in Figure 25, the aforementioned determination method 4, sensing measurement stage, and sensing reporting stage are used as an example. The feedback instruction method may include the following steps:

[0424]

[0435] S2501: A first device transmits a sensing request message to a second device, and the second device receives the sensing request message from the first device.

[0425]

[0436] The sensing request message may further carry the aforementioned fourth information. The fourth information may indicate that the first device needs to obtain the first feedback and the second feedback. For specific implementation, please refer to the related descriptions in S2301 and S2302. Details will not be described again here.

[0426]

[0437] S2502: The second device transmits an NDPA.

[0427]

[0438] S2503: The second device sends an NDP.

[0428]

[0439] S2504: The second device transmits a feedback request message.

[0429]

[0440] S2505: The third device transmits the first feedback to the second device, and the third device receives the first feedback from the second device.

[0430]

[0441] S2506: The third device transmits a first feedback to the first device, and the third device receives the first feedback from the first device.

[0431]

[0442] S2507: The second device transmits second feedback to the first device, and the first device receives the second feedback from the second device.

[0432]

[0443] For specific implementation of S2501 to S2507, please refer to the relevant descriptions in S1401 to S1407, and the details will not be described again here.

[0433]

[0444] S2508: The second device transmits a first feedback to the first device, and the first device receives the first feedback from the second device.

[0434]

[0445] Referring to the related description in S2501, it can be known that the second device may send the first feedback to the first device based on the fourth information, for example, may send the first feedback and the second feedback in a packaged manner. It should be noted that if the fourth information indicates that the first device needs to obtain the first feedback, the second device may directly transfer the first feedback from the third device to the first device based on the fourth information without generating the second feedback. It should be noted that if the second device knows that the third device can communicate directly with the first device, the second device may not send the first feedback.

[0435]

[0446] For example, Figure 26 is a schematic flowchart 6 of a feedback instruction method in scenario C. As shown in Figure 26, the aforementioned determination method 7, sensing measurement stage, and sensing reporting stage are used as an example. The feedback instruction method may include the following steps:

[0436]

[0447] S2601: A first device transmits a sensing request message to a second device, and the second device receives the sensing request message from the first device.

[0437]

[0448] The sensing request message may further carry the aforementioned fourth information. The fourth information may indicate that the first device needs to obtain the first feedback, the second feedback, and the third feedback. For specific implementation, please refer to the related descriptions in S2301 and S2302. Details will not be described again here.

[0438]

[0449] S2602: The second device transmits a sensing request message to the third device, and the third device receives the sensing request message from the second device.

[0439]

[0450] S2603: The third device transmits an NDPA.

[0440]

[0451] S2604: The third device sends an NDP.

[0441]

[0452] S2605: A third device sends a feedback request message

[0453] S2606: The second device transmits a first feedback to the third device, and the third device receives the first feedback from the second device.

[0442]

[0454] S2607: The third device transmits a second feedback to the second device, and the second device receives the second feedback from the third device.

[0443]

[0455] For specific implementation of S2601 to S2607, please refer to the relevant descriptions in S1901 to S1907. The details will not be described again here.

[0444]

[0456] S2608: The third device transmits the first feedback to the second device, and the second device receives the first feedback from the third device.

[0445]

[0457]

[0043] Referring to the related description in S2601, it can be seen that the third device may send the first feedback to the second device based on the fourth information, for example, send the first feedback and the second feedback in a packaged manner. It should be noted that if the fourth information indicates that the first device only needs to obtain the first feedback, the third device may directly forward the first feedback from the second device to the second device based on the fourth information without generating the second feedback.

[0446]

[0458] S2609: The second device transmits third feedback to the first device, and the first device receives the third feedback from the second device.

[0447]

[0459] For the specific implementation of S2609, please refer to the relevant description in S1909, and the details will not be described again here.

[0448]

[0460] S2610: The second device transmits 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.

[0449]

[0461] Referring to the related description in S2601, it can be known that the second device may send the first feedback and the second feedback to the first device based on the fourth information, for example, send the first feedback, the second feedback, and the third feedback in a packaged manner. It should be noted that if the fourth information indicates that the first device only needs to obtain the first feedback and / or the second feedback, the second device may directly transfer the first feedback and / or the second feedback from the second device to the first device based on the fourth information without generating the second feedback.

[0450]

[0462] 23 to 26 that the first device may transmit the fourth information to the second device based on actual requirements, such as service requirements. In this way, the second device can transmit feedback that is actually required to the first device based on the fourth information, and will not transmit feedback that is actually not required, thereby avoiding transmitting redundant information, reducing communication overhead, and improving communication efficiency.

[0451]

[0463] It should be noted that in the embodiments of the present application, the first embodiment and the second embodiment described above may be implemented independently or in combination, and this is not limited thereto.

[0452]

[0464] Embodiment 3 For example, Figure 27 is a schematic flowchart 3 of a feedback instruction method according to an embodiment of the present application. The feedback instruction method is applicable to communication between two of the three devices shown in Figure 5, for example, communication between the first device and the second device in the first, second, and third devices. The first device may be a sensing initiator, the second device may be a sensing responder of the sensing transmitter, and the third device may be a sensing responder of the sensing receiver.

[0453]

[0465] As shown in FIG. 27, the feedback instruction method may include the following steps:

[0454]

[0466] S2701: The first device generates fifth information.

[0455]

[0467] The fifth information may instruct the second device to determine all of the NDPA configuration parameters, or may instruct some of the NDPA configuration parameters, with other parts of the NDPA configuration parameters being determined by the second device. For example, all of the NDPA configuration parameters may include the NDPA physical layer protocol data unit (PPDU) type, LTF size, target user, feedback time limit, configuration parameters for determining sensing receivers to participate in the sensing process, configuration parameters for determining the number of sensing processes or the number of sensing sessions, or configuration parameters for determining frequency band information and resource information for the sensing process. The feedback time limit indicates that the first device, such as the sensing initiator, will trigger feedback within a predetermined subsequent period, thereby causing the second device to prepare for feedback. Thus, some configuration parameters determined by the second device may include one or more of: a configuration parameter for determining sensing receivers to participate in the sensing process, a configuration parameter for determining the number of sensing processes or the number of sensing sessions, a configuration parameter for determining frequency band information and resource information for the sensing process, etc.

[0456]

[0468] Additionally, the first device may determine the fifth information based on one or more of, but not limited to, the status of the first device, the status of the second device, the status of the third device, the service requirements of the first device, the service requirements of the second device, or the service requirements of the third device.

[0457]

[0469] S2702: The first device transmits the fifth information, and the second device receives the fifth information.

[0458]

[0470] The fifth piece of information is: Signaling during the sensing setup phase, such as the sensing setup request message and the sensing setup reception message, or Signaling during the sensing measurement phase, such as sensing request messages , and signaling may be reused to reduce communication overhead and improve communication efficiency.

[0459]

[0471] S2703: The second device analyzes the fifth information.

[0460]

[0472] The second device may determine all configuration parameters of the NDPA by analyzing the fifth information.

[0461]

[0473] It can be seen from the method shown in FIG. 27 that the configuration parameters of the NDPA may be determined through collaboration between the first device and the second device. In this way, the configuration parameters of the NDPA may be flexibly determined based on service requirements, so that the configuration parameters of the NDPA can meet the service requirements. For example, if a service of the first device requires configuration parameters of the NDPA, the first device determines the configuration parameters of the NDPA. However, if a service of the second device requires configuration parameters of the NDPA, the first device instructs the second device to determine at least some of the configuration parameters of the NDPA to meet the service requirements of the second device.

[0462]

[0474] It should be noted that in the embodiments of the present application, the above-mentioned first embodiment, the above-mentioned second embodiment, and the above-mentioned third embodiment may be implemented independently, or may be implemented in combination of any two or three embodiments, and this is not limited thereto.

[0463]

[0475] The above describes a feedback instruction method in an embodiment of the present application. The following describes a feedback instruction device in an embodiment of the present application. The feedback instruction device in the embodiment of the present application includes a feedback instruction device applied to a transmitter and a feedback instruction device applied to a receiver, which will be described separately below.

[0464]

[0476] In some embodiments, the feedback instruction device applied to the transmitter may be applied to the communication system shown in Figure 5 and has the function of the first device in the feedback instruction method shown in Figure 6. The feedback instruction device applied to the receiver may be applied to the communication system shown in Figure 5 and has some function of the second device in the feedback instruction method shown in Figure 6.

[0465]

[0477] For example, Figure 28 is a schematic diagram of the structure of a feedback instruction device 2800 applied to a transmitter. As shown in Figure 28, the feedback instruction device 2800 includes units configured to perform the functions of the first device in the feedback instruction method shown in Figure 6, such as a transceiver unit 2801 and a processing unit 2802.

[0466]

[0478] The processing unit 2802 is configured to generate a first frame, the first frame including first information indicating a feedback type of the first feedback and / or a feedback type of the second feedback, the first feedback and the second feedback being feedback at different levels.

[0467]

[0479] The transceiver unit 2801 is configured to transmit a first frame.

[0468]

[0480] In a possible design solution, the first frame may further include mode indication information, wherein the mode indication information is such that the first information: Feedback type of the first feedback, Feedback type of the second feedback, or Feedback Type of First Feedback and Feedback Type of Second Feedback It is possible to notify that the

[0469]

[0481] In possible design solutions, the feedback types of the first feedback are: Uncompressed channel state information CSI, Compressed CSI, Null Data Packet NDP, Sensing measurement results, The feedback type determined by the sensing initiator, the feedback type determined by the sensing responder, Feedback type determined by the sensing transmitter, or Feedback type determined by the sensing receiver The sensing initiator is the first device.

[0470]

[0482] Possible design solutions include: Uncompressed CSI, Compressed CSI, NDP, Sensing measurement results, The feedback type determined by the sensing initiator, the feedback type determined by the sensing responder, Feedback type determined by the sensing transmitter, or Feedback type determined by the sensing receiver The sensing initiator is the first device.

[0471]

[0483] In a possible design solution, the first information may be carried in at least one of: signaling in a sensing setup phase, or a sensing request message in a sensing measurement phase.

[0472]

[0484] In a possible design solution, the first feedback and the second feedback being feedback at different levels may mean that the transmission occasion of the first feedback is different from the second transmission occasion of the second feedback, or that the transmission target of the first feedback is different from the transmission target of the second feedback.

[0473]

[0485] In a possible design solution, the first information may include a first field and / or a second field, where the first field may indicate a feedback type of the first feedback and the second field may indicate a feedback type of the second feedback.

[0474]

[0486] Optionally, the feedback instruction device 2800 may further include a storage unit (not shown in FIG. 28 ) for storing programs or instructions. When the processing unit 2802 executes the programs or instructions, the feedback instruction device 2800 can implement the function of the first device in the feedback instruction method shown in FIG.

[0475]

[0487] It should be understood that the processing unit 2802 in the feedback indication device 2800 may be implemented by a processor or circuit elements related to a processor, and the transceiver unit 2801 may be implemented by a transceiver or circuit elements related to a transceiver.

[0476]

[0488] It should be noted that the feedback indication device 2800 may be a terminal device or a network device, a chip (system) or another part or element that may be disposed in a terminal device or a network device, or a device that includes a terminal device or a network device, which is not limited in the present application.

[0477]

[0489] For a specific implementation of the feedback instruction device 2800, please refer to the relevant description of the feedback instruction method shown in Figure 6. The details will not be described again here.

[0478]

[0490] For example, Figure 29 is a schematic diagram of the structure of a feedback instruction device 2900 applied to a receiver. As shown in Figure 29, the feedback instruction device 2900 includes units configured to perform the functions of the second device in the feedback instruction method shown in Figure 6, such as a transceiver unit 2901 and a processing unit 2902.

[0479]

[0491] The transceiver unit 2901 is configured to receive a first frame, the first frame including first information, the first information indicating a feedback type of a first feedback and / or a feedback type of a second feedback, the first feedback and the second feedback being feedback at different levels.

[0480]

[0492] The processing unit 2902 is configured to analyze the first frame.

[0481]

[0493] In a possible design solution, the first frame may further include mode indication information, where the first information: Feedback type of the first feedback, Feedback type of the second feedback, or Feedback Type of First Feedback and Feedback Type of Second Feedback It may indicate any one of the following:

[0482]

[0494] In possible design solutions, the feedback types of the first feedback are: Uncompressed CSI, Compressed CSI, NDP, Sensing measurement results, The feedback type determined by the sensing initiator, the feedback type determined by the sensing responder, Feedback type determined by the sensing transmitter, Feedback type determined by the sensing receiver and the sensing initiator may be a second device.

[0483]

[0495] Possible design solutions include the following feedback types for the second feedback: Uncompressed CSI, Compressed CSI, NDP, Sensing measurement results, The feedback type determined by the sensing initiator, the feedback type determined by the sensing responder, Feedback type determined by the sensing transmitter, Feedback type determined by the sensing receiver and the sensing initiator may be a second device.

[0484]

[0496] In a possible design solution, the first feedback and the second feedback being feedback at different levels may mean that the transmission occasion of the first feedback is different from the second transmission occasion of the second feedback, or that the transmission target of the first feedback is different from the transmission target of the second feedback.

[0485]

[0497] In a possible design solution, the first information does not indicate a feedback type of the first feedback, or indicates that the feedback type of the first feedback may include a feedback type determined by a sensing transmitter, where the sensing transmitter may be a second device. Thus, after analyzing the first frame, the processing unit 2902 is further configured to control the transceiver unit 2901 to transmit second information to the third device. The second information indicates that the feedback type of the first feedback is: Uncompressed CSI, Compressed CSI, NDP, Sensing measurement results, Feedback type determined by the sensing receiver and the sensing receiver may be a third device.

[0486]

[0498] Optionally, the second information may be carried in signaling during the sensing measurement phase.

[0487]

[0499] In a possible design solution, the first information may include a first field and a second field, where the first field may indicate a feedback type of the first feedback and the second field may indicate a feedback type of the second feedback.

[0488]

[0500] Optionally, the first field is the feedback type of the first feedback: Uncompressed CSI, Compressed CSI, NDP, Sensing measurement results, or Feedback type determined by the sensing receiver and the sensing receiver may be a third device. After analyzing the first frame, the processing unit 2902 is further configured to control the transceiver unit 2901 to transmit only the first field to the third device.

[0489]

[0501] Optionally, the second field may indicate that the feedback type of the second feedback includes a feedback type determined by a sensing receiver, which may be a third device. After analyzing the first frame, the processing unit 2902 is further configured to control the transceiver unit 2901 to transmit only the second field to the third device.

[0490]

[0502] Furthermore, after transmitting the second field to the third device, the transceiver unit 2901 is further configured to receive third information from the third device, where the third information may indicate that a feedback type of the second feedback includes at least one of uncompressed CSI, compressed CSI, NDP, and sensing measurement results.

[0491]

[0503] In a possible design solution, the first information is carried in at least one of: signaling in the sensing setup phase or signaling in the sensing measurement phase, potentially reusing the signaling to reduce communication overhead and improve communication efficiency.

[0492]

[0504] Optionally, the feedback instruction device 2900 may further include a storage unit (not shown in FIG. 29) for storing programs or instructions. When the processing unit 2902 executes the programs or instructions, the feedback instruction device 2900 can implement the function of the second device in the feedback instruction method shown in FIG.

[0493]

[0505] It should be understood that the processing unit 2902 in the feedback indication device 2900 may be implemented by a processor or circuit elements related to a processor, and the transceiver unit 2901 may be implemented by a transceiver or circuit elements related to a transceiver.

[0494]

[0506] It should be noted that the feedback indication device 2900 may be a terminal device or a network device, a chip (system) or another part or element that may be disposed in a terminal device or a network device, or a device that includes a terminal device or a network device, which is not limited in the present application.

[0495]

[0507] For a specific implementation of the feedback instruction device 2900, please refer to the relevant description of the feedback instruction method shown in Fig. 6. The details will not be described again here.

[0496]

[0508] In some other embodiments, the feedback instruction device applied to the transmitter may be applied to the communication system shown in Figure 5 and has the function of the first device in the feedback instruction method shown in Figure 23. The feedback instruction device applied to the receiver may be applied to the communication system shown in Figure 5 and has any function of the second device in the feedback instruction method shown in Figure 23.

[0497]

[0509] For example, Fig. 30 is a schematic diagram of the structure of a feedback instruction apparatus 3000 applied to a transmitter. As shown in Fig. 28, the feedback instruction apparatus 3000 includes units configured to perform the functions of the first device in the feedback instruction method shown in Fig. 23, such as a transceiver unit 3001 and a processing unit 3002.

[0498]

[0510] The sending unit 3001 is configured to send fourth information, which indicates that the first device needs to obtain first feedback and / or second feedback, where the first feedback and the second feedback are feedbacks at different levels.

[0499]

[0511] The receiving unit 3002 is configured to receive the first feedback and / or the second feedback.

[0500]

[0512] In a possible design solution, the first feedback and the second feedback being feedback at different levels may mean that the transmission occasion of the first feedback is different from the second transmission occasion of the second feedback, or that the transmission target of the first feedback is different from the transmission target of the second feedback.

[0501]

[0513] In a possible design solution, the fourth information can be carried in at least one of: signaling in the sensing setup phase or a sensing request message in the sensing measurement phase, thereby reusing the signaling and thereby reducing communication overhead and improving communication efficiency.

[0502]

[0514] Optionally, the transmitting unit 3001 and the receiving unit 3002 may alternatively be integrated into one unit, e.g., a transceiver unit (not shown in FIG. 30), configured to implement the transmitting and receiving functions of the feedback indication device 3000.

[0503]

[0515] Optionally, the feedback indication device 3000 may further include a processing unit 3003 (shown in a dashed box in FIG. 30 ), which is configured to implement the processing functions of the feedback indication device 3000.

[0504]

[0516] Optionally, the feedback instruction device 3000 may further include a storage unit (not shown in FIG. 30) for storing programs or instructions. When the processing unit 3003 executes the programs or instructions, the feedback instruction device 3000 can implement the function of the first device in the feedback instruction method shown in FIG.

[0505]

[0517] It should be understood that the processing unit 3001 in the feedback indication device 3000 may be implemented by a processor or circuit elements related to a processor, and may also be a processor or a processing unit, and the transceiver unit may be implemented by a transceiver or circuit elements related to a transceiver.

[0506]

[0518] It should be noted that the feedback indication device 3000 may be a terminal device or a network device, a chip (system) or another part or element that may be disposed in a terminal device or a network device, or a device that includes a terminal device or a network device, which is not limited in the present application.

[0507]

[0519] For a specific implementation of the feedback instruction device 3000, please refer to the relevant description of the feedback instruction method shown in Fig. 23. The details will not be described again here.

[0508]

[0520] For example, Figure 31 is a schematic diagram of the structure of a feedback instruction device 3100 applied to a receiver. As shown in Figure 31, the feedback instruction device 3100 includes units configured to perform the functions of the second device in the feedback instruction method shown in Figure 23, such as a transceiver unit 3101 and a processing unit 3102.

[0509]

[0521] The transceiver unit 3101 is configured to receive fourth information, the fourth information indicating that the first device needs to obtain first feedback and / or second feedback, the first feedback and the second feedback being feedback at different levels.

[0510]

[0522] The processing unit 3102 is configured to control the transceiver unit 3102 to transmit the first feedback and / or the second feedback based on the fourth information.

[0511]

[0523] In a possible design solution, the first feedback and the second feedback being feedback at different levels may mean that the transmission occasion of the first feedback is different from the second transmission occasion of the second feedback, or that the transmission target of the first feedback is different from the transmission target of the second feedback.

[0512]

[0524] In a possible design solution, the fourth information may be carried in at least one of: signaling in the sensing setup phase, or a sensing request message in the sensing measurement phase.

[0513]

[0525] Optionally, the feedback instruction device 3100 may further include a storage unit (not shown in FIG. 31 ), which stores a program or instruction. When the processing unit 3102 executes the program or instruction, the feedback instruction device 3100 can implement the function of the second device in the feedback instruction method shown in FIG.

[0514]

[0526] It should be understood that the processing unit 3102 in the feedback indication device 3100 may be implemented by a processor or circuit elements related to a processor, and may also be a processor, and the transceiver unit 3101 may be implemented by a transceiver or circuit elements related to a transceiver.

[0515]

[0527] It should be noted that the feedback indication device 3100 may be a terminal device or a network device, a chip (system) or another part or element that may be disposed in a terminal device or a network device, or a device that includes a terminal device or a network device, which is not limited in the present application.

[0516]

[0528] For specific implementation of the feedback instruction device 3100, please refer to the relevant description of the feedback instruction method shown in Fig. 23. The details will not be described again here.

[0517]

[0529] In some still other embodiments, the feedback instruction device applied to the transmitter may be applied to the communication system shown in Figure 5 and has the function of the first device in the feedback instruction method shown in Figure 27. The feedback instruction device applied to the receiver may be applied to the communication system shown in Figure 5 and has any function of the second device in the feedback instruction method shown in Figure 27.

[0518]

[0530] For example, Fig. 32 is a schematic diagram of the structure of a feedback instruction apparatus 3000 applied to a transmitter. As shown in Fig. 32, the feedback instruction apparatus 3200 includes units configured to perform the functions of the first device in the feedback instruction method shown in Fig. 27, such as a transceiver unit 3201 and a processing unit 3202.

[0519]

[0531] The processing unit 3202 is configured to generate fifth information, the fifth information indicating that the second device determines all configuration parameters of the NDPA, or the fifth information indicating some of the configuration parameters of the NDPA, with other parts of the configuration parameters of the NDPA being determined by the second device.

[0520]

[0532] The transceiver unit 3201 is configured to transmit the fifth information.

[0521]

[0533] In a possible design solution, the fifth information may be carried in one or more of: signaling during the sensing setup phase, or sensing request messages during the sensing measurement phase, reusing signaling and thereby reducing communication overhead and improving communication efficiency.

[0522]

[0534] Optionally, the feedback instruction device 3200 may further include a storage unit (not shown in FIG. 32 ), which stores programs or instructions. When the processing unit 3102 executes the programs or instructions, the feedback instruction device 3200 can implement the function of the first device in the feedback instruction method shown in FIG.

[0523]

[0535] It should be understood that the processing unit 3202 in the feedback indication device 3200 may be implemented by a processor or circuit elements related to a processor, and the transceiver unit 3201 may be implemented by a transceiver or circuit elements related to a transceiver.

[0524]

[0536] It should be noted that the feedback indication device 3200 may be a terminal device or a network device, a chip (system) or another part or element that may be disposed in a terminal device or a network device, or a device that includes a terminal device or a network device, which is not limited in the present application.

[0525]

[0537] For a specific implementation of the feedback instruction device 3200, please refer to the relevant description of the feedback instruction method shown in Figure 27. The details will not be described again here.

[0526]

[0538] For example, Figure 33 is a schematic diagram of the structure of a feedback instruction device 3300 applied to a receiver. As shown in Figure 33, the feedback instruction device 3300 includes units configured to perform the functions of the second device in the feedback instruction method shown in Figure 27, such as a transceiver unit 3301 and a processing unit 3302.

[0527]

[0539] The transceiver unit 3301 is configured to receive fifth information, the fifth information instructing the second device to determine all configuration parameters of the NDPA, or the fifth information indicating some of the configuration parameters of the NDPA, with other parts of the configuration parameters of the NDPA being determined by the second device.

[0528]

[0540] The processing unit 3302 is configured to analyze the fifth information.

[0529]

[0541] In a possible design solution, the fifth information may be carried in at least one of: signaling in the sensing setup phase, or a sensing request message in the sensing measurement phase.

[0530]

[0542] Optionally, the feedback instruction device 3300 may further include a storage unit (not shown in FIG. 33) for storing a program or instruction. When the processing unit 3302 executes the program or instruction, the feedback instruction device 3300 can implement the function of the second device in the feedback instruction method shown in FIG.

[0531]

[0543] It should be understood that the processing unit 3302 in the feedback indication device 3300 may be implemented by a processor or circuit elements related to a processor, and the transceiver unit 3101 may be implemented by a transceiver or circuit elements related to a transceiver.

[0532]

[0544] It should be noted that the feedback indication device 3100 may be a terminal device or a network device, a chip (system) or another part or element that may be disposed in a terminal device or a network device, or a device that includes a terminal device or a network device, which is not limited in the present application.

[0533]

[0545] For a specific implementation of the feedback instruction device 3300, please refer to the relevant description of the feedback instruction method shown in Fig. 27. The details will not be described again here.

[0534]

[0546] The above describes the feedback indication device applied to a transmitter and the feedback indication device applied to a receiver in the embodiments of the present application. Hereinafter, possible product forms of the feedback indication device applied to a transmitter and the feedback indication device applied to a receiver will be described. It should be understood that any product in any form having the features of the feedback indication device applied to a transmitter shown in FIG. 28, FIG. 30, or FIG. 32, and any product in any form having the features of the feedback indication device applied to a receiver shown in FIG. 29, FIG. 31, or FIG. 33, shall fall within the scope of protection of the present application. It should be further understood that the following description is merely an example, and the product forms of the feedback indication device applied to a transmitter and the product forms of the feedback indication device applied to a receiver in the embodiments of the present application are not limited thereto.

[0535]

[0547] In a possible product form, the feedback indication device applied to the transmitter and the feedback indication device applied to the receiver in the embodiments of the present application may be implemented by a common bus architecture.

[0536]

[0548] The feedback instruction apparatus applied to the transmitter includes a processor and a transceiver in internal communication with the processor. The processor is configured to perform the processing functions of the first device in the feedback instruction method shown in Figure 6, Figure 23, or Figure 27. The transceiver is configured to perform the transmitting and receiving functions of the first device in the feedback instruction method shown in Figure 6, Figure 23, or Figure 27. Optionally, the feedback instruction apparatus applied to the transmitter may further include a memory. The memory is configured to store instructions executed by the processor.

[0537]

[0549] The feedback instruction apparatus applied to the receiver includes a processor and a transceiver in internal communication with the processor. The processor is configured to perform the processing functions of the second device in the feedback instruction method shown in Figure 6, Figure 23, or Figure 27. The transceiver is configured to perform the transmitting and receiving functions of the second device in the feedback instruction method shown in Figure 6, Figure 23, or Figure 27. Optionally, the feedback instruction apparatus applied to the receiver may further include a memory. The memory is configured to store instructions executed by the processor.

[0538]

[0550] In a possible product form, the feedback indication device applied to the transmitter and the feedback indication device applied to the receiver in the embodiments of the present application may be implemented by a general-purpose processor.

[0539]

[0551] A general-purpose processor for implementing a feedback indication device applied to a transmitter includes a processing circuit and an output interface in internal communication with the processing circuit, the processing circuit being configured to control the output interface to perform transmitting and receiving functions, and optionally, the general-purpose processor may further include a storage medium, the storage medium being configured to store instructions executed by the processing circuit.

[0540]

[0552] A general-purpose processor for implementing the feedback indication device applied to a receiver includes a processing circuit and an input interface in internal communication with the processing circuit, the processing circuit configured to control the output interface to perform transmitting and receiving functions, and optionally, the general-purpose processor may further include a storage medium configured to store instructions executed by the processing circuit.

[0541]

[0553] In possible product forms, the feedback indication device applied to the transmitter and the feedback indication device applied to the receiver in the embodiments of this application may further be implemented by one or more FPGAs (Field Programmable Gate Arrays), PLDs (Programmable Logic Devices), controllers, state machines, gate logic, discrete hardware components, any other suitable circuitry, or any combination of circuits capable of performing the various functions described throughout this application.

[0542]

[0554] It should be understood that the feedback indication device applied to the transmitter and the feedback indication device applied to the receiver in the aforementioned product forms have any functions of the transmitter and the receiver in the aforementioned method embodiments, respectively, and the details will not be described again here.

[0543]

[0555] It should be understood that the term "and / or" in this specification merely describes the relationship between related objects and expresses the possibility of three relationships. For example, A and / or B can express the following three cases: only A exists, both A and B exist, and only B exists. Note that the character " / " in this specification generally indicates an "or" relationship between related objects.

[0544]

[0556] Those skilled in the art will recognize that the method steps and units described with reference to the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination thereof. To clearly explain the compatibility between hardware and software, the above generally describes the steps and configurations of each embodiment based on their functions. Whether a function is implemented by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use various methods to implement the described functions for each specific application, but such implementation should not be considered to go beyond the scope of this application.

[0545]

[0557] For the purpose of convenience and concise description, it will be clearly understood by those skilled in the art that for the detailed operation processes of the aforementioned systems, devices and units, please refer to the corresponding processes in the aforementioned method embodiments, and the details will not be described again here.

[0546]

[0558] In some embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the described device embodiments are merely examples. For example, the division into units is merely a logical division of function, and other divisions may occur in actual implementation. For example, multiple units or elements may be combined or integrated into another system, or some features may be ignored or not implemented. It should be noted that the shown or discussed mutual couplings or direct couplings or communication connections may be implemented via some interface. Indirect couplings or communication connections between devices or units may be implemented in electrical, mechanical, or other forms.

[0547]

[0559] The units described as separate parts may or may not be physically separated, and the parts shown as units may or may not be physical units, i.e., they may be located in one place or distributed over multiple network units. All or some of the units may be selected based on actual requirements to achieve the objectives of the solutions in the embodiments of the present application.

[0548]

[0560] The functional units in the embodiments of the present application may be integrated into one processing unit, and each unit may exist physically independently, or two or more units may be integrated into one unit. The integrated unit may be implemented in the form of hardware or in the form of a software functional unit.

[0549]

[0561] When implemented in the form of a software functional unit and sold or used as an independent product, the integrated unit may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may essentially, or a portion of its contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product. A computer software product is stored in a storage medium and includes a plurality of instructions for instructing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method described in the embodiments of the present application. The storage medium includes any medium capable of storing program code, such as a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or a compact disk.

[0550]

[0562] The above description is merely a specific implementation of the present application and is not intended to limit the scope of protection of the present application. Any equivalent modifications or replacements that can be easily grasped by those skilled in the art within the technical scope disclosed in the present application shall fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection of the claims.

Claims

1. 1. A feedback indication method comprising: receiving, by a second device, a sensing request for the second device, the second device being connected to a third device; the second device sending a feedback request message to the third device; receiving, by the second device, a first feedback of the sensing measurement result transmitted from the third device; a step of transmitting, by the second device, second feedback of the sensing measurement results transmitted by the second device, the second feedback being transmitted after the first feedback; A method comprising:

2. 2. The method of claim 1, wherein the sensing request includes information indicating that the first device needs to obtain the first feedback and / or the second feedback of the sensing measurement result.

3. 3. The method of claim 2, wherein the information comprises: The method is carried in at least one of signaling in a sensing setup phase or a sensing request message in a sensing measurement phase.

4. 3. The method of claim 2, wherein the sensing request message includes information indicating that the second device determines all configuration parameters of the NDPA, or information indicating a portion of the configuration parameters of the NDPA.

5. 4. The method of claim 3, wherein the information comprises: The method is carried in one or more of the following: signaling in a sensing setup phase, or a sensing request message in a sensing measurement phase.

6. Prior to the step of sending the feedback request message to the third device, the method may further comprise: the second device transmitting an NDPA; and the second device sending an NDP; A method comprising:

7. 1. A feedback indication method comprising: a first device sending a sensing request to a second device, the second device being connected to a third device; receiving, by the first device, second feedback of the sensing measurement results transmitted by the second device, the second feedback being transmitted after the first feedback, the first feedback of the sensing measurement results being transmitted from the third device to the second device in response to a feedback request message transmitted by the second device; A method comprising:

8. 8. The method of claim 7, wherein the sensing request includes information indicating that the first device needs to obtain the first feedback and / or the second feedback of the sensing measurement result.

9. 9. The method of claim 8, wherein the information comprises: The method is carried in at least one of signaling in a sensing setup phase or a sensing request message in a sensing measurement phase.

10. 8. The method of claim 7, wherein the sensing request message includes information indicating that the second device determines all configuration parameters of the NDPA, or information indicating a portion of the configuration parameters of the NDPA.

11. 11. The method of claim 10, wherein the information comprises: The method is carried in one or more of the following: signaling in a sensing setup phase, or a sensing request message in a sensing measurement phase.

12. A feedback indication device comprising a unit configured to perform the method according to any one of claims 1 to 11.

13. 12. A computer-readable storage medium adapted to store a computer program, the computer program comprising instructions used to perform the method of any one of claims 1 to 11.

14. A computer program comprising instructions used to carry out the method according to any one of claims 1 to 11.

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