WO2023016441A1 - 通信方法以及装置 - Google Patents

通信方法以及装置 Download PDF

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Publication number
WO2023016441A1
WO2023016441A1 PCT/CN2022/111096 CN2022111096W WO2023016441A1 WO 2023016441 A1 WO2023016441 A1 WO 2023016441A1 CN 2022111096 W CN2022111096 W CN 2022111096W WO 2023016441 A1 WO2023016441 A1 WO 2023016441A1
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csi
sensing
ndp
change degree
change
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PCT/CN2022/111096
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English (en)
French (fr)
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狐梦实
韩霄
杜瑞
吕艺
杨讯
刘辰辰
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华为技术有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition

Definitions

  • the present application relates to the technical field of communication, and in particular to a communication method and device.
  • Wireless passive sensing is a technology that can perceive the state of the target without the need for the target to carry a signal source, such as an electronic tag.
  • the devices in the sensing process may include: a sensing sending end and a sensing receiving end.
  • the sensing sender can send a measurement signal, such as a null data packet (NDP).
  • NDP null data packet
  • the sensing receiver can receive the measurement signal interfered by the target, and determine the channel state information (channel state information, CSI) between the preset reference measurement signal and the measurement signal interfered by the target.
  • the sensing sending end may send two NDPs, and correspondingly, the sensing receiving end may determine two CSIs through the two NDPs, and determine the CSI change degree through the two CSIs.
  • the sensing sender sends a feedback request (feedback request) to the sensing receiver.
  • the sensing receiver determines that the CSI change degree meets the threshold condition, the sensing receiver can feed back the CSI change degree to the sensing sender to meet the threshold condition, that is, the CSI change degree is considered relatively small. big. If the sensing receiving end determines that the CSI change degree does not meet the threshold condition, the sensing receiving end may send feedback to the sensing that the CSI change degree does not meet the threshold condition, that is, the CSI change degree is considered small.
  • the sensing receiving end receives multiple NDPs, and the sensing receiving end determines multiple CSI change degrees through multiple NDPs, how the sensing receiving end should feed back the CSI changing degree to the sensing sending end is a problem worth considering.
  • the present application provides a communication method and device, which are used to enable a first device to feed back the CSI change degree to a second device for multiple CSI change degrees, so as to realize effective perception of a wireless environment.
  • the first aspect of the present application provides a communication method, including:
  • the first device receives multiple NDPs from the second device, and one of the multiple NDPs corresponds to one CSI; when the first condition is met, the first device sends first information to the third device, and the first information is used to indicate a change in CSI
  • the ratio of the number of CSI variation degrees of the value to the multiple CSI variation degrees is greater than the second threshold value.
  • the change degrees of the multiple CSIs are determined based on the CSIs corresponding to the multiple NDPs.
  • the first device determines multiple CSI change degrees through multiple NDPs, and feeds back the CSI change degrees, which is beneficial to improve the accuracy of perception.
  • the first condition may be: the first CSI change degree among the multiple CSI change degrees of the first device exceeds a first threshold value. That is to say, if one of the multiple CSI change degrees exceeds the first threshold, the first device may report the first information to the second device to indicate that the CSI change degree is larger.
  • the first device can report the change degree of CSI in time to realize effective sensing of the wireless environment.
  • the first condition may also be: a ratio of the number of CSI change degrees exceeding the first threshold among the multiple CSI change degrees to the multiple CSI change degrees is greater than the second threshold. That is, the first device may feed back the CSI change degree by using the proportion of the CSI change degree exceeding the first threshold value. Since the proportion of the CSI change degree exceeding the first threshold exceeds a certain threshold, it can be understood that the wireless environment has a large change, so the first device can report the CSI change degree in time to realize effective perception of the wireless environment.
  • the second device and the third device are the same device, the first device is a sensing receiving end, and the second device is a sensing sending end.
  • the above implementations illustrate some possible roles of the first device, the second device and the third device in the sensing scene.
  • the second device and the third device are the same device. That is, the sensing sender triggers the sensing receiver to feed back the magnitude of the CSI change.
  • the first device is a first sensing receiving end
  • the second device is a sensing sending end
  • the third device is a sensing initiator or a second sensing receiving end.
  • the third device may be a sensing initiator, and the sensing initiator may trigger the first sensing receiver to feed back the magnitude of the CSI change, so as to know the change of the wireless environment.
  • the third device may also use the second sensing receiving end, which triggers the first sensing receiving end to feed back the magnitude of the CSI change, so as to know the change of the wireless environment.
  • one CSI change degree among the multiple CSI change degrees is a CSI change degree calculated by the first device by using at least two CSIs.
  • the CSI change degree may be a CSI change degree obtained by calculating at least two CSIs.
  • the degree of change of the CSI can indirectly represent the change of the wireless environment.
  • the method further includes: the first device determines multiple CSI change degrees by using CSIs corresponding to multiple NDPs.
  • the foregoing implementation manner shows a possible implementation manner in which the first device acquires multiple CSI variation degrees, so that the solution is more comprehensive.
  • the method further includes: the first device receives a feedback request from the third device, where the feedback request is used to trigger the first device to feed back a perception measurement result.
  • the third device may trigger the first device to feed back the perception measurement result. Therefore, it is convenient for the third device to obtain the sensing measurement result, so as to obtain specific change information of the wireless environment, and realize effective sensing of the wireless environment.
  • the first CSI change degree is the largest CSI change degree among the multiple CSI change degrees.
  • the first CSI change degree is the maximum CSI change degree, and the first device may compare the maximum CSI change degree with the first threshold value to feed back the CSI change degree. Since the maximum CSI change degree can represent the change degree of the wireless environment, the first device can reasonably and effectively feed back the CSI change degree based on the maximum CSI change degree, thereby improving the effectiveness and accuracy of perception; or,
  • the first CSI change degree is the CSI change degree calculated by the first device through the first CSI and the second CSI
  • the first CSI is the CSI determined by the first device through the first NDP
  • the first NDP is the CSI received by the first device
  • the penultimate Y-th empty data packet NDP, Y is an integer greater than or equal to 1
  • the second CSI is the CSI determined by the first device through the pre-indicated NDP, or the second CSI is the first
  • the CSI obtained by determining the wth NDP, w is an integer greater than or equal to 1. In this way, the first device can feed back the magnitude of the CSI change degree in combination with the corresponding CSI change degree.
  • the second CSI may be CSI determined by the first device through the pre-indicated NDP, and usually the CSI corresponding to the pre-indicated NDP is CSI in a static or common wireless environment. Therefore, the degree of change in CSI obtained by the first device through the determination of the first CSI and the second CSI can represent a change in the wireless environment to a certain extent, so as to achieve effective sensing.
  • the second CSI is the CSI determined by the first device through the w-th NDP before the first NDP, and the degree of change in CSI determined by the first device through the first CSI and the second CSI can track changes in the wireless environment in time situation, in order to give reasonable feedback on the degree of CSI change.
  • the third device can be prevented from triggering the first device to feed back the sensing measurement result, thereby reducing resource overhead; or,
  • the first CSI change degree is the CSI change degree calculated by the first device through the first CSI and the CSI in the CSI set.
  • the first CSI is the CSI determined by the first device through the first NDP.
  • the first NDP is the CSI received by the first device.
  • the last Y NDP received, Y is an integer greater than or equal to 1;
  • the CSI set includes X CSIs, and the X CSIs are the CSIs determined by the first device through the first X NDPs of the first NDP, and X is greater than or equal to 1. or an integer equal to 2.
  • the first device combines the first CSI and multiple CSIs to calculate the first CSI change degree, that is to say, the first device combines multiple CSIs to represent the CSI change degree, which is beneficial for the third device to perceive wireless Changes in the environment, thereby improving the effectiveness of perception.
  • the method further includes: the first device sends the largest CSI change degree among the multiple CSI change degrees to the third device.
  • the maximum CSI change degree may represent the change degree of the wireless environment, and the first device feeds back the maximum CSI change degree, which is helpful for the third device to determine the CSI change degree, thereby learning the change of the wireless environment.
  • the i-th CSI change degree among the multiple CSI change degrees is the CSI change degree calculated by the first device through the i+1th CSI and the i-th CSI, and the i+1th CSI
  • the CSI is the CSI determined by the first device through the i+1th NDP received by the first device.
  • the i-th CSI is the CSI determined by the first device through the i-th NDP received by the first device. i is greater than or an integer equal to 1.
  • the calculation method of the degree of CSI change is shown.
  • the first device can calculate the degree of CSI change through the adjacent CSI, so that the first device can know the change of the wireless environment in real time, which is beneficial for the first device to reasonably based on
  • the multiple CSI change degrees feed back the magnitude of the CSI change degree; or,
  • the i-th CSI change degree is the CSI change degree calculated by the first device through the i+1-th CSI and the second CSI, and the i+1-th CSI is the i+1-th CSI received by the first device through the first device.
  • the CSI determined by the NDP, the second CSI is the CSI determined by the first device through the pre-indicated NDP, or the second CSI is the CSI determined by the first device through the wth NDP before the first NDP, the first NDP is the last Y-th empty data packet NDP received by the first device, Y is an integer greater than or equal to 1, w is an integer greater than or equal to 1, and i is an integer greater than or equal to 1.
  • the second CSI may be CSI determined by the first device through the pre-indicated NDP, and usually the CSI corresponding to the pre-indicated NDP is CSI in a static or common wireless environment. Therefore, the degree of change in CSI determined by the first device through the (i+1)th CSI and the second CSI can represent a change in the wireless environment to a certain extent, so as to achieve effective sensing.
  • the second CSI is the CSI determined by the first device through the w-th NDP before the first NDP, and the degree of change in CSI determined by the first device through the first CSI and the second CSI can track changes in the wireless environment in time situation, in order to give reasonable feedback on the degree of CSI change; or,
  • the i-th CSI change degree is the CSI change degree calculated by the first device through the i+1-th CSI and the i-Q-th CSI, and the i+1-th CSI is the i+1-th CSI received by the first device through the first device.
  • the CSI determined by the first NDP, the i-Qth CSI is the CSI determined by the first device through the i-Qth NDP received by the first device, i is an integer greater than or equal to 1, Q is an integer greater than or equal to 1, i greater than Q.
  • the first device calculates the CSI change degree obtained by calculating the i+1th CSI and the i-Qth CSI. This is beneficial for the first device to know the change of the wireless environment within a period of time, so as to realize effective perception, and help the first device to feed back the degree of CSI change in a more reasonable manner; or,
  • the i-th CSI change degree is the CSI change degree calculated by the first device through the i+1-th CSI and the first Z CSI of the i+1-th CSI
  • the i+1-th CSI is the first device's CSI obtained by determining the i+1th NDP received by a device, where the first Z CSIs of the i+1th CSI are the first Z NDPs of the i+1th NDP received by the first device through the first device Determine the obtained CSI respectively
  • i is an integer greater than or equal to 1
  • Z is an integer greater than or equal to 1.
  • the first device combines the i+1th CSI and the first Z CSIs of the i+1th CSI to calculate the degree of CSI change, that is to say, the first device synthesizes multiple CSIs to represent the degree of CSI change , which is beneficial for the first device to perceive changes in the wireless environment as a whole, thereby improving the effectiveness of perception.
  • the method also includes:
  • the first device receives first indication information from the second device or the third device, where the first indication information is used to indicate Y, where Y is an integer greater than or equal to 1.
  • the first device receives the first indication information from the second device or the third device to determine that the first NDP is the last Y NDP received by the first device, so that the first device can timely combine the corresponding
  • the CSI change degree feeds back the magnitude of the CSI change degree. It is avoided that the first device cannot feed back the CSI change degree due to the failure to calculate the CSI change degree in time due to the hardware capability or computing capability of the first device.
  • the method also includes:
  • the first device When the first condition is not met, the first device sends second information to the third device, where the second information is used to indicate that the CSI change degree does not exceed the first threshold.
  • the first device may feed back to the third device that the CSI change degree does not exceed the first threshold value. This makes the program more comprehensive.
  • the method also includes:
  • the first device receives at least one of the following information sent by the second device or the third device: second indication information, third indication information;
  • the second indication information is used to indicate multiple CSI change degree calculation methods adopted by the first device, And/or, it is used to instruct the first device to adopt multiple CSI change degree scenarios or a single CSI change degree scenario;
  • the third indication information is used to indicate the first device in the CSI that participates in multiple CSI change degree calculations among the first devices CSI corresponding to the latest received null data packet NDP.
  • the first device may receive the above indication information to determine some relevant indication information for calculating the CSI change degree, so that the first device can calculate the CSI change degree.
  • the second aspect of the present application provides a communication method, including:
  • the third device receives first information from the first device, and the first information is used to indicate that the CSI change degree exceeds the first threshold value;
  • the first condition includes any of the following: Among the CSI change degrees, the first CSI change degree exceeds the first threshold value, and the ratio of the number of CSI change degrees exceeding the first threshold value among the multiple CSI change degrees to the multiple CSI change degrees is greater than the second threshold value.
  • the CSI change degree is determined based on CSI corresponding to multiple NDPs, the multiple NDPs are received by the first device from the second device, and one NDP in the multiple NDPs corresponds to one CSI.
  • the first device determines multiple CSI change degrees through multiple NDPs, which is beneficial to improving perception accuracy.
  • the first condition may be: the first CSI change degree among the multiple CSI change degrees of the first device exceeds a first threshold value. That is to say, if one of the multiple CSI change degrees exceeds the first threshold, the first device may report the first information to the second device to indicate that the CSI change degree is larger.
  • the first device can report the CSI change degree in time to realize effective sensing of the wireless environment.
  • the first condition may also be: the ratio of the number of CSI change degrees exceeding the first threshold among the multiple CSI change degrees to the multiple CSI change degrees is greater than the second threshold. That is, the first device may determine to report the first information based on the proportion of the CSI change degree exceeding the first threshold. Since the proportion of the CSI change degree exceeding the first threshold value exceeds a certain threshold, it can be understood that the wireless environment has a large change, so the first device can report the CSI change degree in time so that the third device can learn the CSI change degree , so as to achieve effective perception of the wireless environment.
  • the second device and the third device are the same device, the first device is a sensing receiving end, and the second device is a sensing sending end.
  • the above implementations illustrate some possible roles of the first device, the second device and the third device in the sensing scene.
  • the second device and the third device are the same device. That is, the sensing sender triggers the sensing receiver to feed back the magnitude of the CSI change.
  • the first device is a first sensing receiving end
  • the second device is a sensing sending end
  • the third device is a sensing initiator or a second sensing receiving end.
  • the third device may be a sensing initiator, and the sensing initiator may trigger the first sensing receiver to feed back the magnitude of the CSI change, so as to know the change of the wireless environment.
  • the third device may also use the second sensing receiving end, which triggers the first sensing receiving end to feed back the magnitude of the CSI change, so as to know the change of the wireless environment.
  • one CSI change degree among the multiple CSI change degrees is a CSI change degree calculated by the first device by using at least two CSIs.
  • the CSI change degree may be a CSI change degree obtained by calculating at least two CSIs.
  • the degree of change of the CSI can indirectly represent the change of the wireless environment.
  • the method further includes: the third device sends a feedback request to the first device, where the feedback request is used to trigger the first device to feed back a perception measurement result.
  • the third device may trigger the first device to feed back the perception measurement result. Therefore, it is convenient for the third device to obtain the sensing measurement result, so as to obtain specific change information of the wireless environment, and realize effective sensing of the wireless environment.
  • the first CSI change degree is the largest CSI change degree among the multiple CSI change degrees.
  • the first CSI change degree is the maximum CSI change degree, and the first device may compare the maximum CSI change degree with the first threshold value to feed back the CSI change degree. Since the maximum CSI change degree can represent the change degree of the wireless environment, the first device can reasonably and effectively feed back the CSI change degree based on the maximum CSI change degree, so that the third device can know the CSI change degree, thereby realizing an effective wireless environment. perception. or,
  • the first CSI change degree is the CSI change degree calculated by the first device through the first CSI and the second CSI
  • the first CSI is the CSI determined by the first device through the first NDP
  • the first NDP is the CSI received by the first device
  • the penultimate Y-th empty data packet NDP, Y is an integer greater than or equal to 1
  • the second CSI is the CSI determined by the first device through the pre-indicated NDP, or the second CSI is the first
  • the CSI obtained by determining the wth NDP, w is an integer greater than or equal to 1. Therefore, it is realized that the first device feeds back the magnitude of the CSI change degree in combination with the corresponding CSI change degree in a timely manner.
  • the second CSI may be CSI determined by the first device through the pre-indicated NDP, and usually the CSI corresponding to the pre-indicated NDP is CSI in a static or common wireless environment. Therefore, the degree of change in CSI obtained by the first device through the determination of the first CSI and the second CSI can represent a change in the wireless environment to a certain extent, so as to achieve effective sensing.
  • the second CSI is the CSI determined by the first device through the w-th NDP before the first NDP, and the degree of change in CSI determined by the first device through the first CSI and the second CSI can track changes in the wireless environment in time situation, in order to give reasonable feedback on the degree of CSI change.
  • the third device In order for the third device to learn the degree of CSI change, thereby realizing effective perception of the wireless environment. For example, in the case of a small change in CSI, the third device can be prevented from triggering the first device to feed back the sensing measurement result, thereby reducing resource overhead. or,
  • the first CSI change degree is the CSI change degree calculated by the first device through the first CSI and the CSI in the CSI set.
  • the first CSI is the CSI determined by the first device through the first NDP.
  • the first NDP is the CSI received by the first device.
  • the last Y NDP received, Y is an integer greater than or equal to 1;
  • the CSI set includes X CSIs, and the X CSIs are the CSIs determined by the first device through the first X NDPs of the first NDP, and X is greater than or equal to 1. or an integer equal to 2.
  • the first device combines the first CSI and multiple CSIs to calculate the first CSI change degree, that is to say, the first device combines multiple CSIs to represent the CSI change degree, which is beneficial for the third device to change the CSI change degree from Perceive changes in the wireless environment as a whole, thereby improving the effectiveness of perception.
  • the method also includes:
  • the third device receives the largest CSI change degree among the multiple CSI change degrees from the first device.
  • the maximum CSI change degree can represent the change degree of the wireless environment, and the first device feeds back the maximum CSI change degree, which is helpful for the third device to determine the CSI change degree, so as to know the change of the wireless environment.
  • the i-th CSI change degree among the multiple CSI change degrees is the CSI change degree calculated by the first device through the i+1th CSI and the i-th CSI, and the i+1th CSI
  • the CSI is the CSI determined by the first device through the i+1th NDP received by the first device.
  • the i-th CSI is the CSI determined by the first device through the i-th NDP received by the first device. i is greater than or an integer equal to 1.
  • the calculation method of the degree of CSI change is shown.
  • the first device can calculate the degree of CSI change based on adjacent CSI, so that the first device can learn the change of the wireless environment in real time, which is beneficial for the first device to Each CSI change degree feeds back the size of the CSI change degree, thereby realizing real-time monitoring of the channel. or,
  • the i-th CSI change degree is the CSI change degree calculated by the first device through the i+1-th CSI and the second CSI
  • the second CSI is the CSI determined by the first device through the pre-indicated NDP
  • the second CSI is the CSI determined by the first device through the first w-th NDP before the first NDP.
  • the first NDP is the last Y-th empty data packet NDP received by the first device.
  • the i+1th CSI is the CSI determined by the first device through the i+1th NDP received by the first device, and i is an integer greater than or equal to 1; in this possible implementation , the second CSI may be the CSI determined by the first device through the pre-indicated NDP, and usually the CSI corresponding to the pre-indicated NDP is CSI in a static or common wireless environment. Therefore, the degree of change in CSI determined by the first device through the (i+1)th CSI and the second CSI can represent a change in the wireless environment to a certain extent, so as to achieve effective sensing.
  • the second CSI is the CSI determined by the first device through the w-th NDP before the first NDP, and the degree of change in CSI determined by the first device through the first CSI and the second CSI can track changes in the wireless environment in time situation, in order to give reasonable feedback on the degree of CSI change.
  • the i-th CSI change degree is the CSI change degree calculated by the first device through the i+1-th CSI and the i-Q-th CSI
  • the i+1-th CSI is the i+1-th CSI received by the first device through the first device
  • the CSI determined by the first NDP, the i-Qth CSI is the CSI determined by the first device through the i-Qth NDP received by the first device, i is an integer greater than or equal to 1
  • Q is an integer greater than or equal to 1, i greater than Q.
  • the first device calculates the CSI change degree obtained by calculating the i+1th CSI and the i-Qth CSI. This is beneficial for the first device to know the change of the wireless environment within a period of time, so as to realize effective perception, and help the first device to feed back the degree of change of the CSI more reasonably. or,
  • the i-th CSI change degree is the CSI change degree calculated by the first device through the i+1-th CSI and the first Z CSI of the i+1-th CSI
  • the i+1-th CSI is the first device's CSI obtained by determining the i+1th NDP received by a device, where the first Z CSIs of the i+1th CSI are the first Z NDPs of the i+1th NDP received by the first device through the first device Determine the obtained CSI respectively
  • i is an integer greater than or equal to 1
  • Z is an integer greater than or equal to 1.
  • the first device combines the i+1th CSI and the first Z CSIs of the i+1th CSI to calculate the CSI change degree, that is to say, the first device synthesizes multiple CSIs to represent the CSI change degree, It is beneficial for the first device to perceive the change of the wireless environment as a whole, thereby improving the effectiveness of perception.
  • the method also includes:
  • the third device sends first indication information to the first device, where the first indication information is used to indicate Y, where Y is an integer greater than or equal to 1.
  • the third device sends the first indication information to the first device, so that the first device can determine that the first NDP is the last Y NDP received by the first device, so that the first device can combine the corresponding CSI in a timely manner.
  • the change degree feeds back the magnitude of the CSI change degree. It is avoided that the first device cannot feed back the CSI change degree due to the failure to calculate the CSI change degree in time due to the hardware capability or computing capability of the first device.
  • the method also includes:
  • the third device receives second information from the first device, where the second information is used to indicate that the CSI change degree does not exceed the first threshold.
  • the third device receives the second information from the first device, and the second information is used to indicate that the CSI change degree does not exceed the first threshold value, so that the solution is more comprehensive .
  • the method also includes:
  • the third device sends at least one of the following information to the first device: second indication information, third indication information;
  • the second indication information is used to indicate multiple CSI change degree calculation methods adopted by the first device, and/or is used to instruct the first device to adopt multiple CSI change degree scenarios or a single CSI change degree scenario;
  • the third indication information is used to indicate the CSI corresponding to the latest null data packet NDP received by the first device among the CSIs participating in the calculation of multiple CSI variation degrees in the first device.
  • the first device may receive the above indication information to determine some relevant indication information for calculating the CSI change degree, so that the first device can calculate the CSI change degree.
  • the third aspect of the present application provides a communication method, including:
  • the sensing initiator generates a first frame, and the first frame is used to establish a first sensing session; the first frame includes at least one user field, at least one user field includes a first user field, and the first user field includes the following indication item: association identification , response end role indication, user threshold indication, first user information, second user information; the first sensing session is the sensing session established between the sensing initiator and the sensing sending end or sensing receiving end, and the associated identifier is the sensing sending end or the sensing receiving end.
  • the identification of the perception receiving end is used to identify the first sensing session, the role of the responding end indicates the role of the sensing sending end or the role of the sensing receiving end; the user threshold indication is used to indicate the user level used in the sensing process of the first sensing session Threshold; the first user information is user information dependent on the role of the responder; the second user information is user information dependent on the session type or measurement establishment type; the perception initiator sends the first frame.
  • the sensing initiator may initiate the first frame to establish the first sensing session. It can be seen from the relevant introduction of the above first frame that the first frame of the sensing initiator may indicate relevant information of the first sensing session, for example, the user level threshold and device role information used in the sensing process of the first sensing session. It can be seen that, through the above technical solution, the establishment of the sensing session and the delivery of the related information of the sensing session can be realized, so that the sensing sending end or the sensing receiving end can obtain the related information of the sensing session, thereby facilitating the execution of the sensing process.
  • the session type or the measurement establishment type includes any of the following: the sensing initiator is the sensing transmitter, the sensing initiator is the sensing receiver, and the sensing initiator is neither the sensing transmitter nor the sensing receiver.
  • the first frame further includes a public field
  • the public field includes at least one of the following: a measurement establishment identifier, an instantaneous or delayed feedback indication, a sensory sender feedback type, a sensory receiver feedback type, a session type, or Measurement establishment type, public threshold indication, threshold variable indication;
  • the measurement establishment identifier is used to indicate the identification number of one or more sensing sessions; the instantaneous or delayed feedback indication is used to indicate the sensing measurement results of one or more sensing sessions with instantaneous feedback or delayed feedback; the sensing sender feedback type includes at least one of the following : Uncompressed channel state information CSI, compressed CSI, empty data packet NDP, sensing measurement result, result of CSI change degree; sensing receiver feedback type includes at least one of the following: uncompressed channel state information CSI, compressed CSI , empty data packet NDP, sensing measurement result, result of CSI change degree; the session type or measurement establishment type includes any of the following: the sensing initiator is the sensing sender, the sensing initiator is the sensing receiver, and the sensing initiator is neither sensing The sending end is not the sensing receiving end; the public threshold indicates the common threshold used in the sensing process of one or more sensing sessions; the variable threshold indication is used to indicate whether the threshold used in the sensing process of one or more sensing sessions can be Change.
  • the first frame further includes a public field
  • the public field may include one or more perception session sharing parameters, so that the perception initiator can send relevant information about multiple perception sessions through the public field, thereby Improve the efficiency of the perception initiator to initiate the perception session.
  • the method further includes: the sensing initiator sends first information; the first information is used to update the threshold used in the sensing process of the first sensing session.
  • the sensing initiator can update the threshold used in the sensing process of the first sensing session, thereby realizing the modification of the threshold used in the sensing process of the first sensing session, and improving the modification of relevant information of the sensing session Flexibility, the perception initiator can dynamically modify the threshold based on actual needs and actual transmission conditions. for more effective perception.
  • the first information is carried in a null data packet announcement (NDPA) or a feedback request; or,
  • NDPA null data packet announcement
  • the sensing initiator also assumes the role of the sensing receiver, the first information is carried in the feedback response; or,
  • the first information is carried in a response frame, and the response frame is used for the sensing initiator to respond to the sensing sending end or the sensing receiving end feeding back information about the first sensing session Perceived measurement results.
  • the bearer of the first information is provided in combination with the role of the perception initiator. Therefore, it is adapted to the current perception process, and there is no need to redefine the message to send an updated threshold, which improves the practicability of the scheme.
  • the method also includes:
  • the sensing initiator sends first indication information; the first indication information is used to indicate that the sensing initiator will send an update frame, and the update frame is used to update the threshold used in the sensing process of the first sensing session; the sensing initiator sends the update frame.
  • the sensing initiation end can update the threshold by updating the frame, so as to realize the dynamic modification of the threshold.
  • the perception initiator can dynamically modify the threshold based on actual needs and actual transmission conditions. for more effective perception.
  • the method also includes:
  • the sensing initiator sends at least one of the following: second indication information, third indication information, fourth indication information, fifth indication information, sixth indication information;
  • the second indication information is used to indicate whether the sensing initiator supports a threshold-based sensing process; the third indication information is used to indicate that the sensing initiator supports the roles of sensing initiator, sensing responder, sensing sender, and/or sensing receiver
  • the fourth indication information is used to indicate the initial threshold; the fifth indication information is used to indicate whether the threshold used in the sensing process of the sensing session is variable; the sixth indication information is used to indicate the sensing measurement results of the instant feedback or delayed feedback sensing session .
  • the sensing initiator can send the above indication information to indicate some capability information of the sensing initiator (for example, whether to support the threshold-based sensing process, supported roles, etc.), so that other devices in the system can learn the sensing
  • the relevant information of the initiator provides preparations for the subsequent establishment of the perception session, so as to facilitate the establishment of the perception session more efficiently.
  • the fourth aspect of the present application provides a communication method, including:
  • the sensing sending end or the sensing receiving end receives the first frame from the sensing initiator, and the first frame is used to establish a first sensing session;
  • the first frame includes at least one user field, and the at least one user field includes a first user field, and the first user field Including the following indication items: association identification, response end role indication, user threshold indication, first user information, second user information;
  • the first sensing session is the sensing session established between the sensing initiation end and the sensing sending end or sensing receiving end ,
  • the association identifier is the identifier of the sensing sender or the sensing receiver, the association identifier is used to identify the first sensing session, the role of the responding end is used to indicate the role of the sensing sender or the role of the sensing receiver;
  • the user threshold indication is used to indicate the role of the first sensing session
  • the first user information is user information that depends on the role of the responder;
  • the second user information is user
  • the sensing initiator may initiate the first frame to establish the first sensing session. It can be seen from the relevant introduction of the above first frame that the first frame of the sensing initiator may indicate relevant information of the first sensing session, for example, the user level threshold and device role information used in the sensing process of the first sensing session. It can be seen that, through the above technical solution, the establishment of the sensing session and the sending of the related information of the sensing session can be realized, so that the sensing sending end or the sensing receiving end can obtain the related information of the first sensing session, thereby facilitating the execution of the sensing process.
  • the session type or the measurement establishment type includes any of the following: the sensing initiator is the sensing transmitter, the sensing initiator is the sensing receiver, and the sensing initiator is neither the sensing transmitter nor the sensing receiver.
  • the first frame further includes a public field
  • the public field includes at least one of the following: a measurement establishment identifier, an instantaneous or delayed feedback indication, a sensory sender feedback type, a sensory receiver feedback type, a session type, or Measurement establishment type, public threshold indication, threshold variable indication;
  • the measurement establishment identifier is used to indicate the identification number of one or more sensing sessions; the instantaneous or delayed feedback indication is used to indicate the sensing measurement results of one or more sensing sessions with instantaneous feedback or delayed feedback; the sensing sender feedback type includes at least one of the following : Uncompressed channel state information CSI, compressed CSI, empty data packet NDP, sensing measurement result, result of CSI change degree; sensing receiver feedback type includes at least one of the following: uncompressed channel state information CSI, compressed CSI , empty data packet NDP, sensing measurement result, result of CSI change degree; the session type or measurement establishment type includes any of the following: the sensing initiator is the sensing sender, the sensing initiator is the sensing receiver, and the sensing initiator is neither sensing The sending end is not the sensing receiving end; the public threshold indication is used to indicate the common threshold used in the sensing process of one or more sensing sessions; the variable threshold indication is used to indicate whether the threshold used in the sensing process of one or more sensing sessions
  • the first frame further includes a public field
  • the public field may include one or more perception session sharing parameters, so that the perception initiator can send relevant information about multiple perception sessions through the public field, thereby Improve the efficiency of the perception initiator to initiate the perception session.
  • the method also includes:
  • the sensing sending end or the sensing receiving end receives first information from the sensing initiator, where the first information is used to update the threshold used in the sensing process of the first sensing session;
  • the sensing sending end or the sensing receiving end determines the updated threshold according to the first information.
  • the sensing sending end or the sensing receiving end receives first information from the sensing initiator, and the first information is used to update the threshold used in the sensing process of the first sensing session.
  • the modification of the threshold used in the sensing process of the first sensing session is realized, and the flexibility of modifying the relevant information of the sensing session is improved, and the sensing initiator can dynamically modify the threshold according to actual needs and actual transmission conditions. for more effective perception.
  • the first information is carried in the NDPA or the feedback request; or,
  • the sensing initiator also assumes the role of the sensing receiver, the first information is carried in the feedback response; or,
  • the first information is carried in the response frame, and the response frame is used for the sensing initiator to respond to the sensing sender or the sensing receiver to feed back the sensing measurement results of the first sensing session.
  • the bearer of the first information is provided in combination with the role of the perception initiator. Therefore, it is adapted to the current perception process, and there is no need to redefine the message to send an updated threshold, which improves the practicability of the scheme.
  • the method also includes:
  • the sensing sending end or the sensing receiving end receives first indication information from the sensing initiator, where the first indication information is used to indicate that the sensing initiation will send an update frame, and the update frame is used to update the threshold used in the sensing process of the first sensing session;
  • the sensing sending end or the sensing receiving end determines the updated threshold according to the first indication information
  • the sensing sender or the sensing receiver receives the update frame from the sensing initiator
  • the sensing sender or the sensing receiver determines the updated threshold according to the update frame.
  • the sensing sending end or the sensing receiving end receives an update frame from the sensing initiator to implement dynamic modification of the threshold.
  • the perception initiator can dynamically modify the threshold based on actual needs and actual transmission conditions. for more effective perception.
  • the method also includes:
  • the sensing sending end or the sensing receiving end receives at least one of the following from the sensing initiator: second indication information, third indication information, fourth indication information, fifth indication information, sixth indication information;
  • the second indication information is used to indicate whether the sensing initiator supports a threshold-based sensing process; the third indication information is used to indicate that the sensing initiator supports the roles of sensing initiator, sensing responder, sensing sender and/or sensing receiver; the second The fourth indication information is used to indicate the initial threshold; the fifth indication information is used to indicate whether the threshold used in the sensing process of the sensing session is variable; the sixth indication information is used to indicate the sensing measurement result of the instant feedback or delayed feedback sensing session.
  • the sensing sending end or the sensing receiving end receives at least one of the following from the sensing initiator: second indication information, third indication information, fourth indication information, fifth indication information, sixth indication information, these indication information Indicates some capability information of the sensing initiator (for example, whether to support the threshold-based sensing process, supported roles, etc.), so that other devices in the system can learn the relevant information of the sensing initiator and provide preparation for the subsequent establishment of the sensing session, so that In order to establish a perception session more efficiently.
  • a fifth aspect of the present application provides a communications device, configured to implement the foregoing various methods.
  • the communication device may be the first device in the first aspect above, or a device including the first device above, or a device included in the first device above, such as a chip; or, the communication device may be the device in the second aspect above A third device, or a device including the above-mentioned third device, or a device included in the above-mentioned third device.
  • the communication device includes a corresponding module, unit, or means (means) for implementing the above method, and the module, unit, or means may be implemented by hardware, software, or by executing corresponding software on hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • a sixth aspect of the present application provides a communications device, configured to implement the foregoing various methods.
  • the communication device may be the sensing initiator in the above third aspect, or a device including the aforementioned sensing initiator, or a device included in the aforementioned sensing initiator, such as a chip; or, the communication device may be the sensing device in the fourth aspect above
  • the communication device includes a corresponding module, unit, or means (means) for implementing the above method, and the module, unit, or means can be implemented by hardware, software, or by executing corresponding software on hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • the seventh aspect of the present application provides a communication device, including: a processor and an interface circuit, the interface circuit is used to communicate with modules other than the communication device; the processor is used to run computer programs or instructions to perform any of the above-mentioned described method.
  • the communication device may be the first device in the first aspect above, or a device including the first device above, or a device included in the first device above, such as a chip; or, the communication device may be the device in the second aspect above
  • the interface circuit may be a code/data read/write interface circuit, which is used to receive computer-executable instructions (computer-executable instructions are stored in the memory, may be directly read from the memory, or may pass through other devices) and transmit to the A processor, so that the processor executes computer-executed instructions to perform the method described in any one of the above aspects.
  • the communication device may be a chip or a chip system.
  • the eighth aspect of the present application provides a communication device, including: a processor; the processor is configured to be coupled to a memory, and after reading an instruction in the memory, execute the method according to any one of the above aspects according to the instruction.
  • the communication device may be the first device in the first aspect above, or a device including the first device above, or a device included in the first device above, such as a chip; or, the communication device may be the device in the second aspect above
  • a ninth aspect of the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is run on a communication device, the communication device can execute the method described in any aspect above.
  • the communication device may be the first device in the first aspect above, or a device including the first device above, or a device included in the first device above, such as a chip; or, the communication device may be the device in the second aspect above.
  • the tenth aspect of the present application provides a computer program product including instructions, which, when run on a communication device, enables the communication device to execute the method described in any one of the above aspects.
  • the communication device may be the first device in the first aspect above, or a device including the first device above, or a device included in the first device above, such as a chip; or, the communication device may be the device in the second aspect above.
  • the eleventh aspect of the present application provides a communication device (for example, the communication device may be a chip or a chip system), and the communication device includes a processor configured to implement the functions involved in any one of the above aspects.
  • the communication device further includes a memory, and the memory is used for storing necessary program instructions and data.
  • the communication device is a system-on-a-chip, it may consist of chips, or may include chips and other discrete devices.
  • a twelfth aspect of the present application provides a communication system, the communication system includes the first device described in the first aspect above and the third device described in the second aspect above; or,
  • the communication system includes the sensing initiator described in the third aspect and the sensing sending end or sensing receiving end described in the fourth aspect.
  • the technical effects brought by any one of the design methods from the fifth aspect to the twelfth aspect can refer to the technical effects brought about by the different design methods in the first aspect or the second aspect or the third aspect or the fourth aspect , which will not be repeated here.
  • the first device receives multiple NDPs from the second device, and one NDP in the multiple NDPs corresponds to one CSI; when the first condition is met, the first device sends the first information to the third device, and the first The information is used to indicate that the CSI change degree exceeds the first threshold value; the first condition includes any of the following: among the multiple CSI change degrees of the first device, the first CSI change degree exceeds the first threshold value, and the multiple CSI change degrees The ratio of the number of CSI change degrees exceeding the first threshold to the multiple CSI change degrees is greater than the second threshold.
  • the change degrees of the multiple CSIs are determined based on the CSIs corresponding to the multiple NDPs.
  • the above technical solution aims at the way that the first device feeds back the CSI change degree to the second device when the first device obtains multiple CSI change degrees through CSI determinations corresponding to multiple NDPs.
  • the first device sends first information to the third device, where the first information is used to indicate that a change degree of the CSI exceeds a first threshold.
  • FIG. 1A is a schematic diagram of the stages included in the perception process of the perception session in the embodiment of the present application;
  • FIG. 1B is a schematic diagram of the sensing process of the embodiment of the present application.
  • Fig. 2 is a schematic diagram of the perception system of the embodiment of the present application.
  • FIG. 3 is a schematic diagram of a communication system according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a communication method in an embodiment of the present application.
  • FIG. 5A is a schematic diagram of a sensing process of a communication method in an embodiment of the present application.
  • FIG. 5B is another schematic diagram of the sensing process of the communication method in the embodiment of the present application.
  • FIG. 5C is another schematic diagram of the sensing process of the communication method in the embodiment of the present application.
  • FIG. 6A is a schematic diagram of roles of the first device, the second device, and the third device according to the embodiment of the present application;
  • FIG. 6B is a schematic diagram of another role of the first device, the second device, and the third device according to the embodiment of the present application;
  • FIG. 6C is a schematic diagram of another role of the first device, the second device, and the third device according to the embodiment of the present application;
  • FIG. 7 is another schematic diagram of a communication method in an embodiment of the present application.
  • FIG. 8A is a schematic structural diagram of the first frame of the embodiment of the present application.
  • FIG. 8B is a schematic structural diagram of the first user field in the first frame of the embodiment of the present application.
  • FIG. 8C is a schematic structural diagram of the common field in the first frame of the embodiment of the present application.
  • FIG. 9 is another schematic diagram of the stages included in the perception process of the perception session in the embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 11 is another schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 12 is another schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 13 is another schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 14 is another schematic structural diagram of a communication device according to an embodiment of the present application.
  • Embodiments of the present application provide a communication method and apparatus, used for a first device to send first information to a third device when a first condition is met, where the first information is used to indicate that a CSI change degree exceeds a first threshold.
  • the present application presents various aspects, embodiments or features in terms of a system that can include a number of devices, components, modules and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules etc. discussed in connection with the figures. In addition, combinations of these schemes can also be used.
  • the network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.
  • the embodiment of the present application can be applied to a wireless local area network (wireless local area network, WLAN) scenario, and can be applied to the Institute of Electrical and Electronics Engineers (Institute of Electrical and Electronics Engineers, IEEE) 802.11 system standard, such as 802.11a/b/g, 802.11n, 802.11ac, 802.11ax, or its next generation, such as 802.11be or the next generation standard. Or can also be adapted for 802.11bf. Alternatively, the embodiments of the present application may also be applicable to wireless local area network systems such as Internet of Things (Internet of Things, IoT) networks or Vehicle to X (Vehicle to X, V2X) networks.
  • IoT Internet of Things
  • V2X Vehicle to X
  • LTE system LTE frequency division duplex (frequency division duplex, FDD) system
  • LTE time division duplex time division duplex, TDD
  • universal mobile communication System universal mobile telecommunications system, UMTS
  • global interconnection microwave access worldwide interoperability for microwave access, WiMAX
  • Wireless passive perception a technology that uses the influence of objects on radio waves to perceive the existence, movement, and movement of objects.
  • Wireless communication devices may include mobile phones, computers, wireless routers, smart home devices, wireless sensors, and wireless routers.
  • wireless communication devices may include mobile phones, computers, wireless routers, smart home devices, wireless sensors, and wireless routers.
  • these wireless communication devices are very close to users and objects such as furniture in the home environment.
  • these wireless communication devices will perceive the interference of human body/object to radio waves, so the human body/object can be sensed by using such interference, which is the working principle of wireless passive sensing technology.
  • wireless passive sensing technology uses a principle similar to "human body radar" to sense surrounding human bodies/objects.
  • the wireless passive sensing technology may be a WLAN sensing (Sensing) technology.
  • the following description mainly takes a scenario where the embodiment of the present application is applied to a WLAN as an example.
  • Sensing Transmitter A device that sends signals for sensing measurements during the sensing process.
  • the perception sending end may also be called a signal sending end, or a sending end, or a master control node.
  • the sensing sending end may be a wireless access point (access point, AP) or a station (station, STA).
  • Sensing Receiver (Sensing Receiver): During the sensing process, it receives the signal for sensing measurement and the device for sensing measurement.
  • the perception receiving end may also be called a signal receiving end, or a receiving end, or a measurement node.
  • the sensing receiver can be an AP or an STA.
  • Sensing initiator used to establish a sensing session.
  • the sensing initiator can be an AP or an STA.
  • Perception responder participate in the perception session initiated by the perception initiator.
  • the sensing responder can be an AP or an STA.
  • the STAs involved in this embodiment of the present application may be various user terminals, user devices, access devices, subscriber stations, subscriber units, mobile stations, user agents, user equipment or other names that have wireless communication functions.
  • the user Terminals may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of user equipment (user equipment, UE), mobile station (mobile station, MS), terminal, terminal equipment, portable communication device, handset, portable computing device, entertainment device, gaming device or system, GPS device or configured for network communication via a wireless medium any other suitable equipment, etc.
  • an STA may be a communication server, a router, a switch, and a network bridge.
  • the above-mentioned devices are collectively referred to as a station or an STA.
  • the APs and STAs involved in the embodiments of the present application may be APs and STAs applicable to IEEE 802.11 system standards.
  • An AP is a device deployed in a wireless communication network to provide wireless communication functions for its associated STAs.
  • the AP can be used as the center of the communication system, usually supporting the 802.11 system standard media access control (media access control, MAC) and
  • a network-side product of a physical layer (physical, PHY), for example, may be a communication device such as a base station, a router, a gateway, a repeater, a communication server, a switch, or a network bridge, wherein the base station may include various forms of macro base stations, Micro base station, relay station, etc.
  • the STA is usually a terminal product that supports the MAC and PHY of the 802.11 system standard, such as a mobile phone, a notebook computer, and the like.
  • CSI refers to the channel measurement result obtained after the sensing receiving end measures the training packets sent by the sensing sending end, which can be used to reflect the status of the (wireless) channel of the link between the sensing receiving end and the sensing sending end.
  • the channel state information is measured for each orthogonal frequency division multiplexing (OFDM) subcarrier group, and the CSI matrix corresponding to the obtained subcarrier group is obtained.
  • the size of the full-dimensional CSI matrix is the number of transmit antennas multiplied by the number of receive antennas, and each matrix element is a complex number containing real and imaginary parts.
  • the sending end When measuring the channel, the sending end includes training symbols in the training packet.
  • the sensing receiver performs channel measurement according to the structure of these training symbols.
  • training symbols may not be included in the training group.
  • a plurality referred to in this application refers to two or more than two.
  • the plurality of CSI variation degrees includes at least two CSI variation degrees. Excess mentioned in this application refers to greater than, or greater than or equal to.
  • the CSI change degree exceeds the first threshold value means that the CSI change degree is greater than the first threshold value, or means that the CSI change degree is greater than or equal to the first threshold value.
  • the sensing process of a sensing session includes an establishment phase, a measurement phase, a reporting phase and a termination phase.
  • the sending phase is not unique to the perception process of all perception sessions.
  • the discovery phase the devices in the system are associated with each other, mainly to exchange some perception-related information between devices.
  • the establishment phase is the establishment phase of the sensing session, and the sensing initiator initiates the sensing session in the establishing phase.
  • the measurement phase is the phase in which perceptual measurements are made.
  • the reporting phase is the phase in which perception reporting takes place.
  • the termination phase is the termination phase of the perception session.
  • a sensing session includes an establishment phase, a measurement phase, a reporting phase and a termination phase. These stages can occur one or more times during a perception session.
  • the sensing session is initiated by the sensing initiator, and the sensing session is the sensing interaction between the sensing initiator and another device. If the sensing initiator needs to interact with multiple devices, the sensing initiator may respectively establish sensing sessions with the multiple devices. That is, the sensing initiator can establish multiple sensing sessions.
  • Sensing Transmitter sends a feedback request (Feedback request)
  • Sensing Receiver1 determines the degree of CSI change through the NDP sent by Sensing Transmitter, if the degree of CSI change determined by Sensing Receiver1 meets the threshold condition, Sensing Receiver1 sends a feedback response 1 (Feedback response)
  • Feedback Response 1 includes met (Met) information to indicate that the degree of change of the CSI is large.
  • Sensing Receiver2 determines the degree of CSI change through the NDP sent by Sensing Transmitter.
  • Sensing Receiver2 sends a feedback response 2 (Feedback response), and the feedback response 2 includes Not Satisfied (Not Met) information. Indicates a small degree of change in CSI. In this way, if the Sensing Transmitter receives the feedback response 1, it can be determined that the CSI measured by the Sensing Receiver1 has a large change degree, and if the Sensing Transmitter receives the feedback response 2, it can be determined that the CSI measured by the Sensing Receiver2 has a small change degree.
  • the above example shown in Figure 1B uses the sensing initiator as the sensing sender, and the sensing sender sends NPDA and NDP to realize the perception of the wireless environment by the sensing receiver as an example to introduce the technical solution of this application .
  • the measurement process shown in FIG. 1B above may be referred to as a non-trigger-based (Non-TB) measurement process for short.
  • the sensing initiator may trigger the sensing sender to send an NDP so that the sensing receiver can perceive the wireless environment, which is not specifically limited.
  • the sensing initiator can trigger the sensing sender to send the NDP by triggering (Trigger) or polling (Polling).
  • the measurement process in which the sensing initiator triggers the sensing sender to send an NDP to facilitate the sensing of the wireless environment by the sensing receiver may be referred to as a trigger-based (Trigger-based, TB) measurement process.
  • Trigger-based, TB Trigger-based
  • FIG. 2 is a schematic diagram of a perception system applicable to an embodiment of the present application.
  • the perception system includes one or more sending ends (such as the sending end 101 in FIG. 2 ), and one or more receiving ends (such as the receiving end 102 in FIG. 2 ).
  • the sending end and the receiving end may be set in the same physical device, or in different physical devices.
  • the sending end 101 sends a signal
  • the receiving end 102 receives the signal.
  • the signal received by the receiving end 102 may include a direct signal 104 (a signal not affected by the detection target 103 ), and an affected signal 105 (a signal affected by the detection target 103 ).
  • the affected signal 105 will change.
  • the superimposed wireless signal of the direct signal 104 and the affected signal 105 received by the receiving end 102 will also change accordingly, so that the receiving end 103 will detect that the wireless channel has changed.
  • the wireless channel is quantized as CSI, and the CSI can be used to reflect the status of the wireless channel.
  • the change of the wireless channel is manifested as the change of the amplitude and phase of CSI.
  • the receiving end 102 can determine the magnitude of the CSI variation, that is, the magnitude of the channel variation. For example, when the change degree of CSI satisfies the threshold condition, the receiving end 102 determines that the change degree of CSI is relatively large. When the change degree of CSI does not meet the threshold condition, the receiving end 102 determines that the change degree of CSI is small. When the CSI varies greatly, the receiving end 101 can further interact with the receiving end 102 to achieve more accurate perception.
  • wireless passive sensing does not require additional hardware costs, and users do not need to wear devices, which is convenient for monitoring the elderly and children, and can also detect possible thieves intrusion.
  • wireless passive sensing technology has little impact on user privacy, and can monitor areas such as bedrooms and bathrooms, which can achieve more comprehensive protection; in addition, wireless passive sensing technology can be used in poor lighting conditions and occlusions (such as curtains, wood It can also perform effective sensing under conditions such as making furniture, etc., and can also perform multi-room sensing across walls; and the sensing accuracy of wireless passive wireless sensing is very high, and it can perform gesture recognition and monitoring of breathing and sleep.
  • FIG. 3 is a schematic diagram of a communication system according to an embodiment of the present application.
  • the communication system includes at least two devices, such as a first device, a second device and a third device.
  • the second device and the third device are the same device, the first device may be a sensing receiving end, and the second device may be a sensing sending end. In this implementation manner, optionally, the second device may also be a perception initiator at the same time.
  • the first device may be a first sensing receiver
  • the second device may be a sensing sender
  • the third device may be a second sensing receiver or a sensing initiator.
  • Any device in the communication system may be a network device or a terminal device, which is not limited.
  • the above-mentioned network device is a device located on the network side of the above-mentioned communication system and having a wireless transceiver function or a chip or a chip system that can be provided in the device.
  • the network equipment includes but not limited to: access point (access point, AP) in wireless fidelity (wireless fidelity, WiFi) system, such as home gateway, router, server, switch, bridge, etc., evolved node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home Base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit, BBU), wireless relay node, wireless backhaul node, transmission point (transmission and reception point, TRP or transmission point, TP) etc., can also be 5G, such as gNB in the new air
  • the above-mentioned terminal device is a terminal that accesses the above-mentioned communication system and has a wireless transceiver function, or a chip or a chip system that can be installed in the terminal.
  • the terminal equipment may also be referred to as user equipment, access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device.
  • the terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal Equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety ( Wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, vehicle-mounted terminals, RSUs with terminal functions, etc.
  • a virtual reality virtual reality
  • AR augmented reality
  • wireless terminals in industrial control wireless terminals in self driving
  • wireless terminals in remote medical wireless terminals in smart grid
  • transportation safety Wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, vehicle-mounted terminals, RSUs with terminal functions, etc.
  • FIG. 3 is only a simplified schematic diagram for easy understanding, and the communication system may also include other network devices and/or other terminal devices, which are not shown in FIG. 3 .
  • FIG. 4 is a schematic diagram of an embodiment of a communication method according to an embodiment of the present application.
  • communication methods include:
  • the second device sends multiple NDPs to the first device.
  • the first device receives multiple NDPs from the second device.
  • One NDP among multiple NDPs corresponds to one CSI.
  • the first device is a sensing receiver, and the second device is a sensing sender.
  • the multiple NDPs include at least three NDPs.
  • the second device obtains the CSI corresponding to the multiple NDPs by measuring the multiple NDPs.
  • the plurality of NDPs include NDP1, NDP2, and NDP3.
  • the sensing receiver 1 can measure NDP1, NDP2, and NDP3 respectively, and obtain CSI1 corresponding to NDP1, CSI2 corresponding to NDP2, and CSI3 corresponding to NDP3.
  • the plurality of NDPs include NDP3, NDP4, and NDP5.
  • the sensing receiver 1 can measure NDP3, NDP4, and NDP5 respectively, and obtain CSI3 corresponding to NDP3, CSI4 corresponding to NDP4, and CSI5 corresponding to NDP5.
  • Step 401a may be performed before step 402 .
  • the first device determines multiple CSI change degrees by using CSIs corresponding to multiple NDPs.
  • one CSI change degree among the multiple CSI change degrees is a CSI change degree calculated by the first device through at least two CSI changes.
  • the plurality of degrees of CSI variation includes at least two degrees of CSI variation.
  • the i-th CSI change degree among the multiple CSI change degrees is the CSI change degree calculated by the first device through the i+1-th CSI and the i-th CSI, and i is an integer greater than or equal to 1.
  • the i+1th CSI is the CSI determined by the first device through the i+1th NDP received by the first device.
  • the i-th CSI is the CSI determined by the first device through the i-th NDP received by the first device.
  • the sensing receiving end may measure NDP1, NDP2, and NDP3 respectively to obtain CSI1 corresponding to NDP1, CSI2 corresponding to NDP2, and CSI3 corresponding to NDP3. Therefore, the multiple degrees of CSI change include two degrees of CSI change.
  • the first CSI change degree is the CSI change degree calculated by the sensing receiving end through CSI1 and CSI2.
  • the second CSI change degree is the CSI change degree calculated by the sensing receiver through CSI2 and CSI3.
  • the i-th CSI change degree among the multiple CSI change degrees is the CSI change degree calculated by the first device through the i+1-th CSI and the second CSI, and i is an integer greater than or equal to 1.
  • the i+1th CSI is the CSI determined by the first device through the i+1th NDP received by the first device.
  • the second CSI is the CSI determined by the first device through the pre-indicated NDP, or the second CSI is the CSI determined by the first device through the wth NDP before the first NDP, and the first NDP is received by the first device
  • the Y-th NDP from the bottom of , Y is an integer greater than or equal to 1
  • w is an integer greater than or equal to 1.
  • the first device is the sensing receiver 1, and the sensing receiver 1 can measure NDP1, NDP2, and NDP3 respectively to obtain CSI1 corresponding to NDP1, CSI2 corresponding to NDP2, and CSI3 corresponding to NDP3.
  • the sensing receiver 1 can measure NDP1, NDP2, and NDP3 respectively to obtain CSI1 corresponding to NDP1, CSI2 corresponding to NDP2, and CSI3 corresponding to NDP3.
  • the first NDP is the penultimate NDP received by the sensing receiver 1, the first NDP is NDP3, and w is 1, so the second CSI is the CSI2 determined by the sensing receiver 1 through NDP2. Therefore, the multiple degrees of CSI change include two degrees of CSI change.
  • the first CSI change degree is the CSI change degree calculated by the sensing receiving end 1 through CSI1 and CSI2.
  • the second CSI change degree is the CSI change degree calculated by the sensing receiver 1 through CSI2 and CSI3.
  • the first device is the sensing receiver 1, and the sensing receiver 1 can measure NDP3, NDP4, and NDP5 respectively to obtain CSI3 corresponding to NDP3, CSI4 corresponding to NDP4, and CSI5 corresponding to NSP5.
  • the first NDP is a pre-indicated NDP, for example, the first NDP is NDP3, and the second CSI is the CSI determined by the sensing receiver 1 through NDP3. Therefore, the multiple degrees of CSI change include two degrees of CSI change.
  • the first CSI change degree is the CSI change degree calculated by the sensing receiver 1 through CSI4 and CSI3.
  • the second CSI change degree is the CSI change degree calculated by the sensing receiver 1 through CSI5 and CSI3.
  • the i-th CSI change degree is the CSI change degree calculated by the first device through the i+1-th CSI and the i-Q-th CSI, and the i+1-th CSI is the first device received by the first device.
  • the CSI determined by the i+1 NDP, the i-Qth CSI is the CSI determined by the first device through the i-Qth NDP received by the first device, i is an integer greater than or equal to 1, and Q is greater than or equal to 1 Integer, i is greater than Q.
  • the first device is the sensing receiver 1, and the sensing receiver 1 can measure NDP1, NDP2, NDP3, and NDP4 respectively, and obtain the CSI1 corresponding to NDP1, the CSI2 corresponding to NDP2, the CSI3 corresponding to NDP3, and the corresponding NDP4
  • the CSI4. Q 2, so it can be seen that the multiple CSI variation degrees include two CSI variation degrees.
  • the first CSI change degree is the CSI change degree calculated by the sensing receiver 1 through CSI3 and CSI1
  • the second CSI change degree is the CSI change degree calculated by the sensing receiver 1 through CSI4 and CSI2.
  • the i-th CSI change degree is the CSI change degree calculated by the first device through the i+1-th CSI and the first Z CSI of the i+1-th CSI, and the i+1-th CSI is the first device’s
  • the CSI determined by the i+1th NDP received by the first device, and the first Z CSIs of the i+1th CSI are the first Z NDPs of the i+1th NDP received by the first device through the first device, respectively
  • i is an integer greater than or equal to 1
  • Z is an integer greater than or equal to 1.
  • the first device is the sensing receiver 1, and the sensing receiver 1 can measure NDP1, NDP2, NDP3, and NDP4 respectively, and obtain the CSI1 corresponding to NDP1, the CSI2 corresponding to NDP2, the CSI3 corresponding to NDP3, and the corresponding NDP4
  • the CSI4. Z 2, therefore, it can be seen that the multiple CSI change degrees include four CSI change degrees.
  • the sensing receiver 1 can calculate the first CSI change degree through CSI3 and CSI1.
  • the sensing receiver 1 can calculate the second CSI change degree through CSI3 and CSI2.
  • the perception receiver 1 can calculate the third CSI change degree through CSI4 and CSI2.
  • the sensing receiver 1 can calculate the fourth CSI change degree through CSI4 and CSI3.
  • the NDP may be the last Y NDP received by the first device.
  • the receiving end 1 perceives the degree of change in CSI obtained by calculating the CSI3 corresponding to NDP3 and the CSI2 corresponding to NDP2, and at this time, the receiving end 1 perceives that NDP4 is received.
  • NDP3 is the penultimate NDP received by sensing receiver 1.
  • NDP4 is the penultimate NDP received by sensing receiver 1. That is to say, the receiving time of an NDP may be used as the time of the CSI change degree calculated by the first device through the CSI3 corresponding to the NDP3 and the CSI2 corresponding to the NDP2. In this way, it is ensured that the first device can obtain the CSI change degree by calculating the CSI3 corresponding to the NDP3 and the CSI2 corresponding to the NDP2.
  • step 401 and step 401a may be performed in the measurement phase of the sensing process shown in FIG. 1A above, or in the time interval between the measurement phase and the reporting phase.
  • the first device sends first information to the third device.
  • the first information is used to indicate that the degree of change of the CSI exceeds the first threshold.
  • the third device receives the first information from the first device.
  • the size of the first threshold may be determined by the first device.
  • the first device may set the first threshold according to the perception measurement result fed back by the third device, environmental changes, and the like.
  • the perception initiation end may indicate a lower threshold as the initial threshold for the first device, and during the feedback process, the first device may adjust the initial threshold in combination with the fed back perception measurement results, environmental changes, etc., to obtain the first threshold.
  • the second device and the third device are the same device, the first device is the sensing receiver, the second device is the sensing sender, and the second device also assumes the role of the sensing initiator. Please refer to FIG. 6A for details.
  • the second device acts as a sensing initiator to initiate a sensing session, and the second device acts as a sensing sender and sends multiple NDPs to the first device (a sensing receiver).
  • the second device as the sensing initiator, triggers the first device to feed back the magnitude of the change degree of the CSI.
  • the first device is the sensing receiver
  • the second device is the sensing sender
  • the third device is the sensing initiator.
  • the third device acts as a sensing initiator to initiate a sensing session
  • the second device acts as a sensing sender to send multiple NDPs to the first device (a sensing receiver).
  • the third device as the sensing initiator, triggers the first device to feed back the magnitude of the change degree of the CSI.
  • the first device is the first sensing receiving end
  • the second device is the sensing sending end
  • the third device is the second sensing receiving end.
  • the second device as the sensing sender, sends multiple NDPs to the first device (the first sensing receiver).
  • Another sensing receiver (second sensing receiver) in the system triggers the first device to feed back the magnitude of the CSI variation.
  • FIG. 6A to FIG. 6C are schematic diagrams of role relationships among the first device, the second device, and the third device.
  • the connection relationship among the first device, the second device and the third device is not limited. If there is a direct connection between the first device and the second device, the first device can communicate directly with the second device; if there is no direct connection between the first device and the second device, the first device can pass through an intermediate device A communication transmission is performed with the second device. If there is a direct connection between the first device and the third device, the first device can directly communicate with the third device. If there is no direct connection between the first device and the third device, the first device may communicate with the third device through an intermediate device.
  • the first condition includes any of the following:
  • the first CSI change degree exceeds the first threshold value
  • the change degrees of multiple CSIs are determined based on CSIs corresponding to multiple NDPs.
  • the relevant introduction of the aforementioned step 401a For the calculation method of the degree of change of CSI, please refer to the related introduction mentioned above, and will not repeat them here.
  • Mode a the first CSI change degree is the largest CSI change degree among the multiple CSI change degrees.
  • the multiple CSI change degrees include two CSI change degrees
  • the first CSI change degree is the CSI change degree calculated by the sensing receiver 1 through CSI1 and CSI2.
  • the second CSI change degree is the CSI change degree calculated by the sensing receiver 1 through CSI2 and CSI3.
  • the first CSI change degree is greater than the second CSI change degree, so the first CSI change degree is the first CSI change degree among the multiple CSI change degrees.
  • the first CSI change degree is the CSI change degree calculated by the first device through the first CSI and the second CSI.
  • the first CSI is the CSI determined by the first device through the first NDP
  • the first NDP is the last Y-th NDP received by the first device, where Y is an integer greater than or equal to 1.
  • the second CSI is the CSI determined by the first device through the pre-indicated NDP, or the second CSI is the CSI determined by the first device through the wth NDP before the first NDP, where w is an integer greater than or equal to 1.
  • w is an integer greater than or equal to 1.
  • the first device is the sensing receiver 1, and the sensing receiver 1 can measure NDP1, NDP2, and NDP3 respectively to obtain CSI1 corresponding to NDP1, CSI2 corresponding to NDP2, and CSI3 corresponding to NDP3.
  • the first NDP is the penultimate NDP received by the sensing receiving end 1, and the first NDP is NDP3, so the first CSI is the CSI3 determined by the sensing receiving end 1 through NDP3.
  • the pre-indicated NDP is NDP1, so the second CSI is the CSI1 determined by the sensing receiving end 1 through NDP1. Therefore, the first CSI change degree is the CSI change degree calculated by the sensing receiver 1 through CSI1 and CSI3.
  • the first device is the sensing receiver 1, and the sensing receiver 1 receives NDP1, NDP2, NDP3, and NDP4 sent by the sensing sender.
  • the first CSI change degree is the CSI change degree calculated by the first device through the first CSI and the CSI in the CSI set.
  • the first CSI is the CSI determined by the first device through the first NDP.
  • the first NDP It is the last Y NDP received by the first device, Y is an integer greater than or equal to 1;
  • the CSI set includes X CSIs, and the X CSIs are determined by the first device through the first X NDPs of the first NDP respectively CSI, X is an integer greater than or equal to 2.
  • the j-th CSI among the X CSIs is determined by the first device through the j-th NDP before the first NDP, and j is an integer greater than or equal to 1 and less than or equal to X.
  • the first device calculates the degree of CSI change 1 through the first CSI and the first CSI of the X CSIs, and the first device calculates the degree of CSI change 2 through the calculation of the first CSI and the second CSI of the X CSIs.
  • the device calculates the degree of CSI change 3 by calculating the second CSI and the third CSI of X CSIs, and so on, and the first device calculates the degree of CSI change by calculating the X-1th CSI and the Xth CSI of X CSIs X. That is, the first device can calculate and obtain X CSI change degrees (including CSI change degree 1 to CSI change degree X). The first device averages the X CSI change degrees, and uses the obtained average CSI change degree as the first CSI change degree.
  • the first device is the sensing receiver 1, and the sensing receiver 1 receives NDP1, NDP2, NDP3, and NDP4 sent by the sensing sender.
  • the first NDP is the penultimate NDP received by the sensing receiving end 1, that is, NDP3.
  • the sensing receiver 1 can respectively determine the CSI1 corresponding to the NDP1, the CSI2 corresponding to the NDP2, the CSI3 corresponding to the NDP3 and the CSI4 corresponding to the NDP4 through the NDP1, NDP2, NDP3 and NDP4.
  • the CSI set includes two CSIs, and the two CSIs are CSI1 corresponding to NDP1 and CSI2 corresponding to NDP2.
  • the receiving end 1 perceives the degree of CSI change 1 obtained through the calculation of CSI3 and CSI2, and the degree of change 2 of CSI obtained through the calculation of CSI2 and CSI1. Then, the sensing receiving end 1 averages the CSI change degree 1 and the CSI change degree 2, and the obtained average CSI change degree is used as the first CSI change degree.
  • a ratio of the number of CSI change degrees exceeding the first threshold among the multiple CSI change degrees to the total number of CSI change degrees included in the multiple CSI change degrees is greater than the second threshold.
  • the second threshold may be set by the first device.
  • the first device may refer to the sensing measurement result, the movement situation of the terminal device in the wireless environment, and the like.
  • the first device sets the second threshold value to a larger threshold value, which means that the first device needs to perform detailed perception of channel information that has always had a large degree of CSI variation; otherwise, the second threshold value can be Set to a smaller threshold value.
  • the first device is a sensing receiving end 1, and the sensing receiving end 1 receives NDP1, NDP2, NDP3, and NDP4 from the sensing sending end.
  • the sensing receiver 1 can respectively determine the CSI1 corresponding to the NDP1, the CSI2 corresponding to the NDP2, the CSI3 corresponding to the NDP3 and the CSI4 corresponding to the NDP4 through the NDP1, NDP2, NDP3 and NDP4.
  • the sensing receiving end 1 calculates the CSI change degree 1 through CSI1 and CSI2, calculates the CSI change degree 2 through CSI2 and CSI3, and obtains the CSI change degree 4 through the calculation of CSI3 and CSI4. That is, the multiple CSI change degrees include 3 CSI change degrees, and the second threshold value is 2/3. If 2 CSI change degrees among the 3 CSI change degrees exceed the first threshold value, the first device sends The third device sends the first information.
  • At least one CSI change degree among the multiple CSI change degrees exceeds the first threshold value, or, among the multiple CSI change degrees, the ratio of the number of CSI change degrees exceeding the third threshold to the multiple CSI change degrees is greater than the first Two thresholds.
  • the above step 401 specifically includes: when at least one CSI change degree among the multiple CSI change degrees exceeds the first threshold value, the first device sends the first information to the third device, and the first information is used to indicate the CSI The change degree exceeds the first threshold value; or, when the ratio of the number of CSI change degrees exceeding the third threshold among the multiple CSI change degrees to the multiple CSI change degrees exceeds the second threshold value, the first device sends the The three devices send first information, where the first information is used to indicate that the CSI change degree exceeds a third threshold.
  • the first threshold, the second threshold and the third threshold are set by the first device.
  • the first threshold value and the second threshold value please refer to the relevant introduction mentioned above.
  • the third threshold value is smaller than the first threshold value, the first threshold value is larger, and the CSI change degree exceeds the first threshold value, which indicates that the CSI change degree is greater.
  • the third threshold value may be smaller, if the ratio of the number of CSI change degrees exceeding the third threshold value to the multiple CSI change degrees among the multiple CSI change degrees is greater than the second threshold value , which means that the degree of CSI change is relatively large, that is, the degree of change of CSI is compared with the third threshold value and the ratio of the degree of change of CSI exceeding the third threshold value is used to represent the overall degree of change of CSI.
  • the multiple CSI change degrees include 6 CSI change degrees, and if one of the 6 CSI change degrees exceeds the first threshold value, the first device sends first information to the third device to indicate The CSI change degree exceeds the third threshold.
  • the multiple CSI change degrees include 6 CSI change degrees, and if 2 CSI change degrees among the 6 CSI change degrees exceed the first threshold value.
  • the first device sends first information to the third device, which is used to indicate that the degree of change of the CSI exceeds a first threshold.
  • the second threshold value is 2/3, and if 4 of the 6 CSI change degrees exceed the third threshold value, the first device sends first information to the third device to indicate the CSI change degree exceeds the third threshold.
  • the first device may also feed back the result of the CSI change degree to the third device. For example, specific values for the degree of change in CSI.
  • the first device may not feed back information to the third device; or, the first device ignores the multiple NDPs; or, the first device feeds back third information to the third device.
  • the embodiment shown in FIG. 4 further includes step 403 .
  • the first device sends second information to the third device.
  • the second information is used to indicate that the degree of change of the CSI does not exceed the first threshold.
  • the third device receives the second information from the first device.
  • the first device is the sensing receiving end 2, and the sensing receiving end 2 obtains two degrees of CSI variation through NDP1, NDP2, and NDP3.
  • the sensing receiving end 2 determines that the first condition is not met through the two CSI change degrees, and the sensing receiving end 1 feeds back second information to the sensing sending end, which is used to indicate that the CSI change degree does not exceed the first threshold.
  • the first device executes step 402, and if the first condition is not satisfied, the first device executes step 403.
  • step 404 the embodiment shown in FIG. 4 further includes step 404, and step 404 may be performed after step 402.
  • the first device sends the largest CSI change degree among the multiple CSI change degrees to the third device.
  • the third device receives the largest CSI change degree among the multiple CSI change degrees from the first device.
  • the first device is the sensing receiver 1, and the second device is the sensing sender.
  • the multiple CSI change degrees include two CSI change degrees, and the first CSI change degree is the CSI change degree calculated by the sensing receiving end 1 through CSI1 and CSI2.
  • the second CSI change degree is the CSI change degree calculated by the sensing receiver 1 through CSI2 and CSI3.
  • the first CSI change degree is greater than the second CSI change degree, and the sensing receiver 1 sends the first CSI change degree among the multiple CSI change degrees to the sensing sender 1 .
  • the embodiment shown in FIG. 4 further includes step 405 and step 406 .
  • the third device sends a feedback trigger to the first device.
  • the first device receives the feedback trigger from the third device.
  • the feedback trigger is used to trigger the first device to feed back the perception measurement result.
  • the perception measurement result includes at least one of the following: the amount of change in CSI, and the information that the degree of change in CSI exceeds the first threshold.
  • the first device is the sensing receiver 1
  • the third device is the sensing sender.
  • the sensing sender sends a feedback trigger (Feedback Trigger) to the sensing receiver 1.
  • the feedback trigger is used to trigger the sensing receiver 1 to feed back the sensing measurement result.
  • the first device sends the perception measurement result to the third device.
  • the third device receives the perception measurement result from the first device.
  • the first device is the sensing receiver 1
  • the third device is the sensing sender.
  • the sensing receiving end 1 sends the sensing measurement result to the sensing sending end.
  • the above steps 402 to 406 may be performed in the reporting phase shown in FIG. 1A above.
  • the embodiment shown in FIG. 4 further includes step 401b.
  • the first device receives at least one of the following: first indication information, second indication information, and third indication information.
  • the first indication information is used to indicate Y, where Y is an integer greater than or equal to 1.
  • the first NDP is the last Y-th NDP received by the first device. That is, the first indication information includes a time offset, which is used to indicate the value of Y.
  • the sensing receiving end 1 receives NDP1, and the sensing receiving end 1 determines and obtains the CSI1 corresponding to the NDP1 through the NDP1. After the sensing receiving end 1 receives the NDP2, the sensing receiving end determines to obtain the CSI2 corresponding to the NDP2 through the NPD2.
  • the sensing receiving end 1 receives the NDP2, and the sensing receiving end 1 obtains the CSI1 corresponding to the NDP1 through NDP1.
  • the sensing receiving end 1 determines to obtain the CSI2 corresponding to the NDP2 through the NDP2.
  • the sensing receiving end 1 calculates the CSI change degree 1 through the CSI1 and CSI2
  • the second indication information is used to instruct the first device to adopt multiple CSI change degree scenarios or a single CSI change degree scenario, and/or to indicate multiple CSI change degree calculation methods adopted by the first device.
  • the calculation method of multiple CSI change degrees adopted by the first device reference may be made to the relevant introduction about the aforementioned calculation methods of multiple CSI change degrees, which will not be repeated here.
  • the multi-CSI change degree scenario means that the number of times the first device feeds back information about whether the first threshold value is met is less than the number of CSI change degrees calculated by the first device.
  • a single CSI change degree scenario means that, for each CSI change degree, the first device will feed back information about whether the CSI change degree satisfies the first threshold.
  • the multiple CSI change degrees include two CSI change degrees, but the sensing receiving end 1 only feeds back information about whether the CSI change degree exceeds the first threshold for the two CSI change degrees once. Then it can be said that the perception receiving end 1 adopts multiple CSI change degree scenarios.
  • the third indication information is used to indicate the CSI corresponding to the latest NDP received by the first device among the CSIs participating in the calculation of multiple CSI variation degrees in the first device.
  • the first device is a sensing receiver 1, and the sensing receiver 1 receives NDP1, NDP2, NDP3, and NDP4.
  • the sensing receiving end 1 can respectively determine the CSI1 corresponding to the NDP1, the CSI2 corresponding to the NPD2, the CSI3 corresponding to the NDP3 and the CSI4 corresponding to the NDP4 through the NDP1, NDP2, NDP3 and NDP4.
  • the third indication information indicates the CSI3 corresponding to the NDP3.
  • the first device can obtain the CSI change degree 1 by calculating the CSI3 corresponding to the NDP3 and the CSI2 corresponding to the NDP2, and obtain the CSI change degree 2 by calculating the CSI2 corresponding to the NDP2 and the CSI1 corresponding to the NDP1. That is, the first device determines to obtain multiple CSI change degrees, specifically including CSI change degree 1 and CSI change degree 2.
  • step 401b may be performed before step 401.
  • the first device may receive at least one of the following from the second device or the third device: first indication information, second indication information, and third indication information.
  • the second device is a sensing sender
  • the sensing sender may send the first indication information and the second indication information in the establishment phase or the measurement phase shown in FIG. 1A above.
  • the sensing sending end may send the third indication information in the reporting phase shown in FIG. 1A above.
  • the third device is a sensing initiator
  • the sensing initiator may send the first indication information and the second indication information in the establishment phase or the measurement phase shown in FIG. 1A above.
  • the sensing initiator may send the third indication information in the reporting phase shown in FIG. 1A above.
  • the above-mentioned first device receiving the first indication information and/or the second indication information from the second device or the third device may be performed in the establishment phase or the measurement phase shown in FIG. 1A , which is not specifically described in this application. limited.
  • the receiving of the third indication information from the second device or the third device by the first device may be performed in the reporting phase shown in FIG. 1A , which is not limited in this application.
  • the first device, the second device, and the third device may exchange respective multi-CSI change degree support indications.
  • the multi-CSI change degree support indication is used to indicate whether the corresponding device supports the multi-CSI change degree scenario.
  • the first device sends multiple CSI change degree support indications to the second device and the third device, to indicate that the first device supports multiple CSI change degree scenarios.
  • the third device is the sensing initiator, the third device may select the first device as the sensing receiver, and establish a sensing session between the third device and the first device.
  • the process in which the first device, the second device, and the third device can exchange respective multi-CSI change degree support indications may be performed in the discovery phase shown in FIG. 1A above, or may be performed in the Execution in other stages, which is not limited in this application.
  • the embodiment shown in FIG. 4 further includes step 401c.
  • Step 401c and step 401d may be performed before step 401 .
  • the fourth device sends the first frame to the first device.
  • the first frame is used to establish a perception session.
  • the first device receives the first frame from the fourth device.
  • the fourth device may be a sensing initiator, and the first device may be a sensing receiver.
  • the first frame is used to establish one or more awareness sessions. For the relevant introduction of the first frame, you can refer to the relevant introduction of Figure 7 later, and will not repeat it here.
  • the second device, the third device, and the fourth device may be the same device, or may be different devices, which are not limited in this application.
  • the second device, the third device, and the fourth device are the same device, and this device serves as both a sensing sender and a sensing initiator.
  • the first device determines information about the perception session according to the first frame.
  • the first device determines information about the perception session established between the fourth device and the first device according to the first frame.
  • Step 401c and step 401d are similar to step 702 and step 703 in the embodiment shown in FIG. 7 .
  • Step 401c and step 401d are similar to step 702 and step 703 in the embodiment shown in FIG. 7 .
  • step 401c and step 401d may be performed in the establishment phase shown in FIG. 1A , or may be performed in other phases, which are not limited in this application.
  • step 401c There is no fixed order of execution between step 401c, step 401d and step 401b, step 401c and step 401d can be executed first, and then step 401b is executed; or, step 401b is executed first, and then step 401c and step 401d are executed; or, depending on the situation, at the same time Execute step 401c, step 401d, and step 401b, which are not limited in this application.
  • the first device receives multiple NDPs from the second device, and one NDP in the multiple NDPs corresponds to one CSI; when the first condition is met, the first device sends the first information to the third device, and the first The information is used to indicate that the CSI change degree exceeds the first threshold value; the first condition includes any of the following: among the multiple CSI change degrees of the first device, the first CSI change degree exceeds the first threshold value, and the multiple CSI change degrees The ratio of the number of CSI change degrees exceeding the first threshold to the multiple CSI change degrees is greater than the second threshold.
  • the change degrees of the multiple CSIs are determined based on the CSIs corresponding to the multiple NDPs.
  • the above technical solution provides a way for the first device to feed back the CSI change degree to the third device for multiple CSI change degrees of the first device.
  • the first device sends the third device to the third device.
  • One piece of information the first piece of information is used to indicate that the degree of change of the CSI exceeds the first threshold. In this way, the effective perception of the wireless environment can be realized.
  • FIG. 7 is a schematic diagram of another embodiment of a communication method according to an embodiment of the present application.
  • communication methods include:
  • the perception initiator generates a first frame.
  • the first frame is used to establish one or more awareness sessions.
  • the first frame may be called a sensing request frame, or a sensing initiation frame, or a sensing establishment frame, and this application does not specifically limit the name of the first frame.
  • the first frame includes at least one user field, and one user field may include user-level information corresponding to one awareness session.
  • the first frame is used to establish a first sensing session
  • the first sensing session is a sensing session established between a sensing initiator and a sensing receiver or a sensing sender.
  • the at least one user field includes a first user field.
  • the first user field includes one of the following indications: association identifier (or unassociation identifier), responder role indication, user threshold indication, first user information, and second user information.
  • the first user field includes user-level information for the first awareness session.
  • the content included in the first user field is introduced below.
  • An association identifier is an identifier of the sensing receiver or the sensing sender, and is used to identify the first sensing session.
  • the association identifier is used as an example for introduction here.
  • the first user field may also include an unassociated identifier (UID), which indicates an identification number of an unassociated user.
  • UID unassociated identifier
  • other parts of the first user field include related information based on the unassociated user.
  • the technical solution of the present application will be introduced by taking the first user field including the association identifier as an example.
  • the responder role indication is used to indicate the role of the perception receiver or the role of the perception sender. That is, it indicates whether the first sensing session is established between the sensing initiator and the sensing sender, or whether the first sensing session is established between the sensing initiator and the sensing receiver.
  • the user threshold indication is used to indicate the threshold of the user level used in the sensing process of the first sensing session. That is, it indicates that the sensing process of the first sensing session adopts the threshold value of the user level.
  • the following describes the correspondence between the indication value of the user threshold indication and the threshold of the user level in combination with Table 1.
  • the user threshold is 0.1, that is, the sensing process of the first sensing session uses 0.1 as the threshold.
  • an indicated value of 11 indicates that threshold-based awareness processes are not used. That is to say, the sensing process of the first sensing session does not execute the process A in the reporting phase shown in FIG. 1A , but executes the process B in the reporting phase shown in FIG. 1A . It should be noted that, optionally, the sensing initiator may also add an indication information in the first user field to indicate that the first sensing session does not use the threshold-based sensing process, which is not limited in this application.
  • the first user information is user information dependent on the role of the responder.
  • the role of the responder is the sensing receiver
  • the first user information includes a feedback type that the sensing receiver feeds back to the sensing initiator.
  • the type of feedback that the sensing receiving end feeds back to the sensing initiator may include at least one of the following: uncompressed CSI, compressed CSI, NDP, sensing measurement results, and results of CSI change degrees.
  • the first user field may not include the first user information.
  • the role of the responder is the perception sender
  • the first user information includes at least one of the following: information about the perception receiver of the first perception session, and NDPA configuration information.
  • the information of the sensing receiving end of the first sensing session may include an identifier of the sensing receiving end of the first sensing session, so as to be used by the sensing sending end to determine which sensing receiving end to perform sensing interaction with.
  • the NDPA configuration information is used to perceive the sender to send NDPA.
  • the configuration information of NDPA includes resources for sending NPDA, through which the sensing sender can send NDPA and so on.
  • the first user field may not include the first user information.
  • the second user information is user information depending on the session type or the measurement establishment type.
  • the session type or measurement establishment type includes any of the following: the sensing initiator is the sensing transmitter, the sensing initiator is the sensing receiver, and the sensing initiator is neither the sensing transmitter nor the sensing receiver.
  • the foregoing second user information refers to some additional information that the sensing sending end or the sensing receiving end needs to know depending on the session type or the measurement establishment type.
  • the sensing initiator is the sensing receiving end
  • the second user information may include at least one of the following: the type of feedback fed back from the sensing receiving end to the sensing sending end, and a trigger indication, and the trigger indication is used to indicate whether the sensing sending end Trigger the feedback of the sensing receiver as the sensing initiator.
  • the type of feedback that the sensing receiving end feeds back to the sensing initiator may include at least one of the following: uncompressed CSI, compressed CSI, NDP, sensing measurement results, and results of CSI change degrees.
  • the sensing initiator is neither the sensing sending end nor the sensing receiving end, and the sensing receiving end feeds back a feedback type to the sensing sending end.
  • the first user field may not include the second user information.
  • the first frame is used to establish the first perception session and the first user field.
  • the first frame may also be used to establish one or more sensing sessions, and each sensing session may correspond to a user field, which is not limited in this application.
  • the above is only an illustration by taking the first perception session and the first user field as examples, and does not limit this application.
  • the user field in the first frame is introduced with the first user field above, and the formats of other user fields in the first frame are also similar, and details will not be introduced here one by one.
  • the first frame also includes a public field.
  • the first frame includes a public field and at least one user field.
  • the public field includes at least one of the following: measurement establishment identifier, measurement time identifier, instantaneous or delayed feedback indication, sensory sender feedback type, sensory receiver feedback type, session type or measurement establishment type, public threshold indication, threshold variable Instructions, Public Information.
  • the measurement establishment identifier is used to indicate the identification number of one or more sensing sessions.
  • the one or more sensing sessions may share some parameters, so the common field indicates the one or more sensing sessions through the measurement establishment identifier, so that the one or more sensing sessions share the information included in the common field.
  • the sensing initiator establishes a sensing session in the establishment phase.
  • the sensing initiator may use the measurement establishment identifier to mark one or more sensing sessions established by the sensing initiator. so that the one or more awareness sessions share the information in the common field.
  • the one or more sensing sessions may include the first sensing session described above. That is to say, the first sensing session can share the information in the common field.
  • the measurement time identifier is used to indicate a certain NDP of each sensing session in the one or more sensing sessions.
  • the measurement time identifier is used to indicate the NDP based on which the CSI change degree is fed back or sent in the one or more sensing sessions. That is, the NDP feedback based on the indication or the degree of change of the sent CSI.
  • the instantaneous or delayed feedback indication is used to indicate instantaneous feedback or delayed feedback of the sensing measurement results of one or more sensing sessions.
  • the sensing initiator indicates immediate feedback or delayed feedback of the sensing measurement results of one or more sensing sessions through the instant or delayed feedback indication. For example, the sensing initiator instructs to delay feeding back the sensing measurement results of one or more sensing sessions. In this way, the sensing receiver can have enough time to calculate the corresponding CSI change degree, so that the sensing receiver can feed back whether the CSI change degree exceeds the threshold.
  • the feedback type of the sensing sender includes at least one of the following: uncompressed channel state information CSI, compressed CSI, empty data packet NDP, sensing measurement results, CSI change degree feedback (for example, met information or Not met in the feedback response information).
  • the feedback type of the sensing receiver includes at least one of the following: uncompressed channel state information CSI, compressed CSI, empty data packet NDP, sensing measurement results, CSI change degree feedback (for example, met information or Not met in the feedback response information).
  • Session type or measurement establishment type For the session type or measurement establishment type, please refer to the related introduction mentioned above, and will not repeat them here.
  • the common threshold indication is used to indicate the common threshold adopted by the sensing process of one or more sensing sessions. That is, the common threshold is a threshold used in the sensing processes of the one or more sensing sessions, and may be called a common threshold.
  • the way of indicating the public threshold is similar to the way of indicating the aforementioned user threshold.
  • the sensing receiving end may ignore the public threshold and perform sensing measurement based on a user-level threshold.
  • variable threshold indication is used to indicate whether the threshold used in the sensing process of one or more sensing sessions is variable.
  • Common information is common information that depends on the session type or measurement establishment type.
  • the session type or measurement establishment type includes any of the following: the sensing initiator is the sensing transmitter, the sensing initiator is the sensing receiver, and the sensing initiator is neither the sensing transmitter nor the sensing receiver.
  • the above public information refers to some additional information that the sensing sender or the sensing receiver needs to know depending on the session type or the measurement establishment type.
  • the second user information may include at least one of the following: the type of feedback fed back from the sensing receiver to the sensing sender, a trigger indication, and the trigger indication is used to indicate Whether the sensing sender triggers the feedback of the sensing receiver as the sensing initiator.
  • the type of feedback that the sensing receiving end feeds back to the sensing initiator may include at least one of the following: uncompressed CSI, compressed CSI, NDP, sensing measurement results, and results of CSI change degrees.
  • the sensing initiator is neither the sensing sending end nor the sensing receiving end, and the sensing receiving end feeds back the type of feedback to the sensing sending end.
  • the public field does not include public information.
  • the format of the first frame, the user field and the common field shown in FIG. 8A to FIG. 8C is just an example. In practical applications, some fields of the public field in the first frame may also be moved to the user field, and some fields of the user field may also be moved to the public field, which is not limited in this application.
  • the first frame When the first frame is used to establish a perception session, the first frame may only include the user field.
  • the sensing initiator establishes one or more sensing sessions through the first frame and establishes sensing measurements based on these sensing sessions (that is, based on the sensing measurements established by one or more sensing sessions identified by the measurement establishment identification number in the public field).
  • the sensing initiator may also establish the one or more sensing sessions through multiple frames, and establish sensing measurements based on the one or more sensing sessions. For example, the sensing initiator may first establish the one or more sensing sessions in one frame, and then establish sensing measurements based on the one or more sensing sessions in another frame. Alternatively, the sensing initiator may first establish the sensing measurement through one frame, and then establish one or more sensing sessions based on the sensing measurement through another frame, which is not limited in this application.
  • the sensing initiator sends the first frame.
  • the sensing initiation end may send the first frame, and correspondingly, the sensing sending end or the sensing receiving end may receive the first frame.
  • the sensing sending end or the sensing receiving end determines information of the first sensing session according to the first frame.
  • the first sensing session is a sensing session established between the sensing initiator and the sensing sending end, and for the sensing sending end, the sensing sending end determines information of the first sensing session according to the first frame.
  • the sensing sender is the device corresponding to the association identifier in the first user field.
  • the sensing sending end may determine the information of the first sensing session according to the first frame.
  • the sensing sending end may read the user level threshold used in the sensing process of the first sensing session, information of the sensing receiving end, and resources for sending NPDA from the first user field.
  • the determining the information of the first sensing session by the sensing sending end according to the first frame further includes: the sensing sending end reads the public information of the first sensing session from a public field in the first frame.
  • the sensing sending end reads the public information of the first sensing session from a public field in the first frame.
  • the feedback type of the sensing receiver, the session type of the first sensing session, and the like For example, the feedback type of the sensing receiver, the session type of the first sensing session, and the like.
  • the first sensing session is a sensing session established between the sensing initiator and the sensing receiver.
  • the sensing sender may determine the information of the first sensing session according to the first frame.
  • the perception receiver may read the feedback type of the perception receiver from the first user field.
  • the sensing sending end may determine the information of the first sensing session according to the first frame, including: the sensing sending end may read the public information of the first sensing session from a public field. For example, instantaneous feedback or delayed feedback of the sensing measurement results of the first sensing session.
  • steps 701 to 703 may be performed during the establishment phase of the perception process of the perception session, or may be performed in other phases of the perception process of the perception session, which is not limited in this application.
  • the sensing initiator may update the threshold used in the sensing process of the sensing session.
  • update methods There are many specific update methods, and two possible update methods are introduced below by taking the threshold used by the sensing initiator to update the sensing process of the first sensing session as an example.
  • Method 1 is introduced below in conjunction with step 704 and step 705 .
  • the embodiment shown in FIG. 7 further includes step 704 and step 705 .
  • the sensing initiator sends the first information.
  • the first information is used to update the threshold used in the sensing process of the first sensing session.
  • the first information includes updated thresholds.
  • the sensing sending end or the sensing receiving end determines an updated threshold according to the first information.
  • a first sensing session is established between the sensing initiator and the sensing receiver.
  • the sensing initiator sends the first information to the sensing receiver, and the first information may be carried in the NPDA or the feedback request.
  • the sensing receiver receives the first information sent by the sensing initiator, and determines an updated threshold according to the first information.
  • a first sensing session is established between the sensing initiator and the sensing sender.
  • the sensing initiator sends the first information to the sensing sending end.
  • the first information may be carried in a feedback response or sensory feedback.
  • the sensing sending end receives the first information sent by the sensing initiating end, and determines the updated threshold according to the first information.
  • a first sensing session is established between the sensing initiator and the sensing receiver, and the sensing initiator sends the first information to the sensing receiver.
  • the first information may be carried in a response frame, and the response frame is used for the sensing receiver to respond to the sensing initiator to feed back the sensing measurement result of the first sensing session.
  • the sensing receiver receives the first information sent by the sensing initiator, and determines an updated threshold according to the first information.
  • step 704 and step 705 may be performed in the measurement phase or the reporting phase of the sensing process of the first sensing session, or in other phases of the sensing process of the first sensing session. Applications are not limited.
  • Mode 2 will be described below in combination with steps 706 to 709 .
  • the embodiment shown in FIG. 7 further includes steps 706 to 709.
  • the sensing initiator sends first indication information.
  • the first indication information is used to indicate that the sensing initiation will send an update frame, and the update frame is used to update the threshold used in the sensing process of the first sensing session.
  • the sensing initiator sends the first indication information, indicating that an update frame is sent to update the information in the first sensing session.
  • the first indication information indicating that an update frame is sent to update the information in the first sensing session.
  • the threshold used in the sensing process of the first sensing session For example, the threshold used in the sensing process of the first sensing session.
  • the first indication information may be carried in the NDP or the feedback request.
  • the sensing initiator sends the first indication information to the sensing receiving end.
  • the sensing receiver receives the first indication information from the sensing initiator.
  • the first indication information may be carried in the feedback response or the sensing feedback.
  • the sensing initiating end sends the first indication information to the sensing sending end, and correspondingly, the sensing sending end receives the first indication information from the sensing initiating end.
  • the sensing initiator if the sensing initiator is neither the sensing sender nor the sensing receiver, the first information is carried in a response frame, and the response frame is used for the sensing receiver to respond to the sensing initiator feeding back the sensing measurement of the first sensing session result.
  • the sensing initiator sends the first indication information to the sensing receiver, and correspondingly, the sensing receiver receives the first indication information from the sensing initiator.
  • the sensing sending end or the sensing receiving end determines an updated threshold according to the first information.
  • the sensing initiator sends an update frame.
  • the sensing sender or the sensing receiver determines the updated threshold according to the update frame.
  • the foregoing steps 706 to 709 may be performed in the establishment phase, measurement phase or reporting phase of the sensing process of the first sensing session.
  • the above step 706 to step 709 may also be performed in an update phase added in the sensing process of the first sensing session.
  • an update phase is added to the sensing process of the first sensing session, and the updating phase may be used for the sensing initiator to update the threshold used in the sensing process of the first sensing session.
  • the specific application is not limited.
  • the location of the update stage shown in FIG. 9 is an example. In practical applications, there is no limitation on the location of the update stage in the sensing process.
  • the update phase may be between the measurement phase and the report phase, or the update phase may also be between the establishment phase and the measurement phase, which is not limited in this application.
  • the sensing initiator may not send the first indication information, but directly send the update frame, which is not limited in this application. It should be noted that, when the sensing initiator is the sensing receiver, the sensing initiator may not send the first indication information and the update frame.
  • step 701a may be performed before step 701.
  • the sensing initiator sends at least one of the following: second indication information, third indication information, fourth indication information, fifth indication information, and sixth indication information.
  • the second indication information is used to indicate whether the sensing initiator supports threshold-based sensing process.
  • the threshold-based sensing process can be understood as the sensing process in the measurement phase shown in FIG. 1B .
  • the third indication information is used to indicate that the sensing initiator supports the roles of the sensing initiator, the sensing responder, the sensing sender, and/or the sensing receiver.
  • the sensing initiator indicates which roles the sensing initiator supports through the third indication information.
  • the third indication information is a bitmap, and the bitmap includes four bits, which respectively correspond to the sensing initiator, the sensing responder, the sensing receiving end, and the sensing sending end.
  • the bitmap is "1101", which means that the support is called the perception initiator, perception responder and perception sender.
  • the third indication information includes an index, and when the index is 1, it means that it only supports being a sensing initiator, and when the index is 2, it means that it supports being a sensing sender and a sensing initiator.
  • the fourth indication information is used to indicate the initial threshold. For example, if the sensing initiator supports a threshold-based sensing process, the sensing initiator sends fourth indication information to indicate the initial threshold.
  • the fifth indication information is used to indicate whether the threshold used in the sensing process of the sensing session is variable.
  • the sixth indication information is used to indicate the sensing measurement result of the instant feedback or delayed feedback sensing session.
  • the sensing initiator uses the third indication information to indicate the role that the sensing initiator can assume.
  • the sensing initiator can also indicate whether the sensing initiator supports becoming a sensing initiator through the seventh indication information, indicate whether the sensing initiator supports becoming a sensing responding end through the eighth indication information, and indicate whether the sensing initiator supports becoming a sensing responding end through the ninth indication information.
  • Support becoming the sensing sender and indicate whether the sensing initiator supports becoming the sensing receiver through the tenth indication information. That is, the perception initiation end indicates whether it supports the corresponding role through four indication information, which is not limited in this application.
  • the fourth indication information indicates the initial threshold.
  • the device may send corresponding indication information indicating that there is no initial threshold. That is, the device does not support being a perception initiator and does not have the ability to set an initial threshold.
  • the fourth indication information includes the indication value "1", which means that the initial threshold value is 0.1.
  • multiple initial thresholds may be indicated in the fourth indication information.
  • the perception receiving end determines multiple CSI change degrees through multiple NDPs. If one of the multiple CSI change degrees exceeds the threshold 1, the sensing receiving end feeds back that the CSI change degree exceeds the threshold 1. Or, if a certain proportion of the CSI change degrees among the multiple CSI change degrees exceeds the threshold value 2, then the perception receiving end feedbacks that the CSI change degree exceeds the threshold value 2. Therefore, the above-mentioned fourth indication information may indicate multiple initial thresholds, so as to perceive the degree of CSI change fed back by the receiving end.
  • step 701a may be performed in the discovery phase shown in FIG. 1A , or may be performed in other phases, which is not limited in this application.
  • the above step 701a uses the sensing initiator as an example to introduce the process of exchanging information between devices in the sensing system.
  • the information shown in step 701a above may be exchanged between different devices of the perception system. In this way, the devices in the perception system can obtain the capability information of other devices and the like.
  • FIG. 7 all take the sensing initiator as an example to introduce the technical solution of the present application. In practical applications, it can also be executed by other devices (for example, the sensing sending end or the sensing receiving end). Specifically, this application does not limited.
  • the sensing initiator may initiate a first frame, and the first frame is used to establish a first sensing session.
  • the first frame of the sensing initiator may indicate relevant information of the first sensing session, for example, the user level threshold and device role information used in the sensing process of the first sensing session. It can be seen that the establishment of a sensing session and the sending of related information of the sensing session can be realized through the above technical solution, so that the sensing sending end and the sensing receiving end can obtain the related information of the sensing session, and facilitate the execution of the sensing process.
  • the above describes the communication method provided by the present application.
  • the present application also provides a communication device.
  • the communications apparatus 1000 is configured to implement the method performed by the first device in the embodiment shown in FIG. 4 above.
  • the communication apparatus 1000 is applied to a first device, and the first device may be a sensing receiving end, and the sensing receiving end may be an AP or an STA.
  • the transceiver unit 1001 is configured to receive multiple NDPs from the second device, one NDP in the multiple NDPs corresponds to one CSI; when the first condition is met, send first information to the third device, the first information is used to indicate the change of CSI
  • the ratio of the number of CSI variation degrees of the value to the multiple CSI variation degrees is greater than the second threshold value.
  • the change degrees of the multiple CSIs are determined based on the CSIs corresponding to the multiple NDPs.
  • the second device and the third device are the same device, the communication apparatus 1000 is a sensing receiving end, and the second device is a sensing sending end.
  • the communication apparatus 1000 is the first sensing receiving end, the second device is the sensing sending end, and the third device is the sensing initiator or the second sensing receiving end.
  • one CSI change degree among the multiple CSI change degrees is a CSI change degree calculated by the communication apparatus 1000 through at least two CSIs.
  • the processing unit 1002 is configured to determine multiple CSI change degrees by using CSIs corresponding to multiple NDPs.
  • the transceiver unit 1001 is configured to receive a feedback request from a third device, and the feedback request is used to trigger the communication apparatus 1000 to feed back a perception measurement result.
  • the first CSI change degree is the largest CSI change degree among multiple CSI change degrees.
  • the first CSI change degree is the CSI change degree calculated by the communication device 1000 through the first CSI and the second CSI, the first CSI is the CSI determined by the communication device 1000 through the first NDP, and the first NDP is the CSI received by the communication device 1000
  • the penultimate Y-th empty data packet NDP, Y is an integer greater than or equal to 1; the second CSI is the CSI determined by the communication device 1000 through the pre-indicated NDP, or the second CSI is the previous CSI of the communication device 1000 through the first NDP
  • the CSI determined by the wth NDP, w is an integer greater than or equal to 1; or,
  • the first CSI change degree is the CSI change degree calculated by the communication device 1000 through the first CSI and the CSI in the CSI set.
  • the first CSI is the CSI determined by the communication device 1000 through the first NDP.
  • the last Yth NDP received, Y is an integer greater than or equal to 1;
  • the CSI set includes X CSIs, and the X CSIs are the CSIs determined by the communication device 1000 through the first X NDPs of the first NDP, and X is greater than or an integer equal to 2.
  • the transceiving unit 1001 is further configured to send the largest CSI variation degree among the multiple CSI variation degrees to the third device.
  • the i-th CSI change degree among the multiple CSI change degrees is the CSI change degree calculated by the communication device 1000 through the i+1-th CSI and the i-th CSI, and the i+1-th CSI
  • the CSI is the CSI determined by the communication device 1000 through the i+1th NDP received by the communication device 1000.
  • the i-th CSI is the CSI determined by the communication device 1000 through the i-th NDP received by the communication device 1000. i is greater than or an integer equal to 1; or,
  • the i-th CSI change degree is the CSI change degree calculated by the communication device 1000 through the i+1-th CSI and the second CSI
  • the second CSI is the CSI determined by the communication device 1000 through the pre-indicated NDP
  • the second CSI is the CSI determined by the communication device 1000 through the wth NDP before the first NDP
  • the first NDP is the Yth empty data packet NDP from the bottom received by the communication device 1000
  • Y is an integer greater than or equal to 1
  • w is greater than or an integer equal to 1
  • the i+1th CSI is the CSI determined by the communication device 1000 through the i+1th NDP received by the communication device 1000
  • i is an integer greater than or equal to 1;
  • the i-th CSI change degree is the CSI change degree calculated by the communication device 1000 through the i+1-th CSI and the i-Q-th CSI, and the i+1-th CSI is the i+1-th CSI received by the communication device 1000 through the communication device 1000
  • the CSI obtained by determining the i-Qth NDP, the i-Qth CSI is the CSI determined by the i-Qth NDP received by the communication device 1000 through the communication device 1000, i is an integer greater than or equal to 1, Q is an integer greater than or equal to 1, i greater than Q;
  • the i-th CSI change degree is the CSI change degree calculated by the communication device 1000 through the i+1-th CSI and the first Z CSI of the i+1-th CSI
  • the i+1-th CSI is the CSI change degree calculated by the communication device 1000 through communication
  • the transceiver unit 1001 is also used to:
  • the transceiver unit 1001 is also used to:
  • the transceiver unit 1001 is also used to:
  • the second indication information is used to indicate multiple CSI change degree calculation methods adopted by the communication device 1000, and/or, used to instruct the communication device 1000 to adopt multiple CSI change degree scenarios or a single CSI change degree scenario;
  • the third indication information is used to Indicate the CSI corresponding to the null data packet NDP received by the communication device 1000 latest among the CSIs involved in the calculation of multiple CSI variation degrees in the communication device 1000 .
  • the present application also provides a communication device.
  • the communication device 1100 includes a transceiver unit 1101 , and optionally, the communication device 1100 further includes a processing unit 1102 .
  • the communication apparatus 1100 is configured to implement the method performed by the third device in the embodiment shown in FIG. 4 above. In some implementation manners, the communication apparatus 1100 is applied to a third device, and the third device may be a sensing initiator, a sensing sending end, or a second sensing receiving end.
  • the transceiver unit 1101 is configured to receive first information from the first device when the first condition is met, and the first information is used to indicate that the CSI change degree exceeds a first threshold value;
  • the first condition includes any of the following: first Among the multiple CSI change degrees of the device, the first CSI change degree exceeds the first threshold value, and the ratio of the number of CSI change degrees exceeding the first threshold value to the multiple CSI change degrees is greater than the second threshold value, the degree of change of the multiple CSIs is determined based on the CSI corresponding to the multiple NDPs, the multiple NDPs are received by the first device from the second device, and one NDP in the multiple NDPs corresponds to one CSI.
  • the second device is the same device as the communication apparatus 1100, the first device is a sensing receiving end, and the second device is a sensing sending end.
  • the first device is a first sensing receiving end
  • the second device is a sensing sending end
  • the communication device 1100 is a sensing initiator or a second sensing receiving end.
  • one CSI change degree among the multiple CSI change degrees is a CSI change degree calculated by the first device by using at least two CSIs.
  • the transceiving unit 1101 is further configured to send a feedback request to the first device, where the feedback request is used to trigger the first device to feed back the perception measurement result.
  • the first CSI change degree is the largest CSI change degree among multiple CSI change degrees.
  • the first CSI change degree is the CSI change degree calculated by the first device through the first CSI and the second CSI
  • the first CSI is the CSI determined by the first device through the first NDP
  • the first NDP is the CSI received by the first device
  • the penultimate Y-th empty data packet NDP, Y is an integer greater than or equal to 1
  • the second CSI is the CSI determined by the first device through the pre-indicated NDP, or the second CSI is the first
  • the CSI determined by the wth NDP, w is an integer greater than or equal to 1; or,
  • the first CSI change degree is the CSI change degree calculated by the first device through the first CSI and the CSI in the CSI set.
  • the first CSI is the CSI determined by the first device through the first NDP.
  • the first NDP is the CSI received by the first device.
  • the last Y NDP received, Y is an integer greater than or equal to 1;
  • the CSI set includes X CSIs, and the X CSIs are the CSIs determined by the first device through the first X NDPs of the first NDP, and X is greater than or equal to 1. or an integer equal to 2.
  • the transceiver unit 1101 is also configured to:
  • the i-th CSI change degree among the multiple CSI change degrees is the CSI change degree calculated by the first device through the i+1th CSI and the i-th CSI, and the i+1th CSI
  • the CSI is the CSI determined by the first device through the i+1th NDP received by the first device.
  • the i-th CSI is the CSI determined by the first device through the i-th NDP received by the first device. i is greater than or an integer equal to 1;
  • the i-th CSI change degree is the CSI change degree calculated by the first device through the i+1-th CSI and the second CSI, and the i+1-th CSI is the i+1-th CSI received by the first device through the first device
  • the CSI determined by NDP, i is an integer greater than or equal to 1;
  • the second CSI is the CSI determined by the first device through the pre-indicated NDP, or the second CSI is the first wth CSI obtained by the first device through the first NDP
  • the CSI determined by the NDP, the first NDP is the last Y empty data packet NDP received by the first device, Y is an integer greater than or equal to 1, and w is an integer greater than or equal to 1;
  • the i-th CSI change degree is the CSI change degree calculated by the first device through the i+1-th CSI and the i-Q-th CSI, and the i+1-th CSI is the i+1-th CSI received by the first device through the first device.
  • the CSI determined by the first NDP, the i-Qth CSI is the CSI determined by the first device through the i-Qth NDP received by the first device, i is an integer greater than or equal to 1, Q is an integer greater than or equal to 1, i greater than Q;
  • the i-th CSI change degree is the CSI change degree calculated by the first device through the i+1-th CSI and the first Z CSI of the i+1-th CSI
  • the i+1-th CSI is the first device's CSI obtained by determining the i+1th NDP received by a device, where the first Z CSIs of the i+1th CSI are the first Z NDPs of the i+1th NDP received by the first device through the first device Determine the obtained CSI respectively
  • i is an integer greater than or equal to 1
  • Z is an integer greater than or equal to 1.
  • the transceiver unit 1101 is also configured to:
  • the transceiver unit 1101 is also configured to:
  • the transceiver unit 1101 is also configured to:
  • the second indication information is used to indicate multiple CSI change degree calculation methods adopted by the first device, and/or is used to instruct the first device to adopt multiple CSI change degree scenarios or a single CSI change degree scenario;
  • the third indication information is used to indicate the CSI corresponding to the latest null data packet NDP received by the first device among the CSIs participating in the calculation of multiple CSI variation degrees in the first device.
  • the present application also provides a communication device.
  • the communication device 1200 includes a processing unit 1201 and a transceiver unit 1202 .
  • the communication device 1200 is configured to implement the method performed by the sensing initiator in the embodiment shown in FIG. 7 above.
  • the processing unit 1201 is configured to generate a first frame, the first frame is used to establish a first perception session; the first frame includes at least one user field, the at least one user field includes a first user field, and the first user field includes the following indication item : association identifier, response end role indication, user threshold indication, first user information, second user information; the first sensing session is the sensing session established between the communication device 1200 and the sensing sending end or sensing receiving end, and the association identity is sensing The identifier of the sending end or the perception receiving end, the association identifier is used to identify the first sensing session, the role of the responding end is used to indicate the role of the sensing sender or the role of the sensing receiver; the user threshold indication is used to indicate the sensing process adopted by the first sensing session The threshold of the user level; the first user information is user information dependent on the role of the responder; the second user information is user information dependent on the session type or measurement establishment type;
  • the transceiver unit 1202 is configured to send the first frame.
  • the session type or the measurement establishment type includes any of the following: the communication device 1200 is a sensory sender, the communication device 1200 is a sensory receiver, and the communication device 1200 is neither a sensory transmitter nor a sensory receiver.
  • the first frame further includes a public field
  • the public field includes at least one of the following: a measurement establishment identifier, an instantaneous or delayed feedback indication, a sensory sender feedback type, a sensory receiver feedback type, a session type, or Measurement establishment type, public threshold indication, threshold variable indication;
  • the measurement establishment identifier is used to indicate the identification number of one or more sensing sessions; the instantaneous or delayed feedback indication is used to indicate the sensing measurement results of one or more sensing sessions with instantaneous feedback or delayed feedback; the sensing sender feedback type includes at least one of the following : Uncompressed channel state information CSI, compressed CSI, empty data packet NDP, sensing measurement result, result of CSI change degree; sensing receiver feedback type includes at least one of the following: uncompressed channel state information CSI, compressed CSI , empty data packet NDP, sensing measurement result, result of CSI change degree; the session type or measurement establishment type includes any of the following: the communication device 1200 is the sensing sending end, the communication device 1200 is the sensing receiving end, and the communication device 1200 is neither sensing The sending end is not the sensing receiving end; the public threshold indication is used to indicate the common threshold used in the sensing process of one or more sensing sessions; the variable threshold indication is used to indicate whether the threshold used in the sensing process of one or more sensing
  • the transceiver unit 1202 is also configured to:
  • the first information is used to update the threshold used in the sensing process of the first sensing session.
  • the first information is carried in the NDPA or the feedback request; or,
  • the communication device 1200 also assumes the role of a sensing receiver, the first information is carried in the feedback response; or,
  • the first information is carried in a response frame, and the response frame is used for the communication device 1200 to respond to the sensing sending end or the sensing receiving end feeding back the first sensing session. Perceived measurement results.
  • the transceiver unit 1202 is also configured to:
  • the first indication information is used to indicate that the communication device 1200 will send an update frame, and the update frame is used to update the threshold used in the sensing process of the first sensing session;
  • the transceiver unit 1202 is also configured to:
  • Second indication information Send at least one of the following: second indication information, third indication information, fourth indication information, fifth indication information, sixth indication information;
  • the second indication information is used to indicate whether the communication device 1200 supports a threshold-based sensing process; the third indication information is used to indicate that the communication device 1200 supports the role of becoming a sensing initiator, a sensing responder, a sensing sender, and/or a sensing receiver;
  • the fourth indication information is used to indicate the initial threshold; the fifth indication information is used to indicate whether the threshold used in the sensing process of the sensing session is variable; the sixth indication information is used to indicate the sensing measurement result of the instant feedback or delayed feedback sensing session.
  • the present application also provides a communication device.
  • the communication device 1300 includes a transceiver unit 1301 and a processing unit 1302 .
  • the communication device 1300 is configured to implement the method performed by the sensing sending end or the sensing receiving end in the embodiment shown in FIG. 7 above.
  • the transceiver unit 1301 is configured to receive a first frame from the sensing initiator, the first frame is used to establish a first sensing session; the first frame includes at least one user field, the at least one user field includes a first user field, and the first user field includes One of the following indications: association identification, response end role indication, user threshold indication, first user information, second user information; the first sensing session is a sensing session established between the sensing initiator and the sensing sending end or sensing receiving end,
  • the association identifier is the identifier of the sensing sender or the sensing receiver, the association identifier is used to identify the first sensing session, the role of the responding end is used to indicate the role of the sensing sender or the role of the sensing receiver;
  • the user threshold indication is used to indicate the sensing of the first sensing session
  • the threshold of the user level used in the process; the first user information is user information dependent on the role of the responder; the second user information is user information dependent on the session type or measurement establishment type;
  • the processing unit 1302 is configured to determine information of the first perception session according to the first frame.
  • the session type or the measurement establishment type includes any of the following: the sensing initiator is the sensing transmitter, the sensing initiator is the sensing receiver, and the sensing initiator is neither the sensing transmitter nor the sensing receiver.
  • the first frame further includes a public field
  • the public field includes at least one of the following: a measurement establishment identifier, an instantaneous or delayed feedback indication, a sensory sender feedback type, a sensory receiver feedback type, a session type, or Measurement establishment type, public threshold indication, threshold variable indication;
  • the measurement establishment identifier is used to indicate the identification number of one or more sensing sessions; the instantaneous or delayed feedback indication is used to indicate the sensing measurement results of one or more sensing sessions with instantaneous feedback or delayed feedback; the sensing sender feedback type includes at least one of the following : Uncompressed channel state information CSI, compressed CSI, empty data packet NDP, sensing measurement result, result of CSI change degree; sensing receiver feedback type includes at least one of the following: uncompressed channel state information CSI, compressed CSI , empty data packet NDP, sensing measurement result, result of CSI change degree; the session type or measurement establishment type includes any of the following: the sensing initiator is the sensing sender, the sensing initiator is the sensing receiver, and the sensing initiator is neither sensing The sending end is not the sensing receiving end either; the public threshold indication is used to indicate the common threshold used in the sensing process of one or more sensing sessions; the variable threshold indication is used to indicate whether the threshold used in the sensing process of one or more sensing
  • the transceiver unit 1301 is also used to:
  • the processing unit 1302 is also used for:
  • An updated threshold is determined according to the first information.
  • the first information is carried in the NDPA or the feedback request; or,
  • the sensing initiator also assumes the role of the sensing receiver, the first information is carried in the feedback response; or,
  • the first information is carried in the response frame, and the response frame is used for the sensing initiator to respond to the sensing sender or the sensing receiver to feed back the sensing measurement results of the first sensing session.
  • the transceiver unit 1301 is also used to:
  • first indication information from the sensing initiator, where the first indication information is used to indicate that the sensing initiator will send an update frame, and the update frame is used to update the threshold used in the sensing process of the first sensing session;
  • the processing unit 1302 is also used for:
  • the transceiver unit 1301 is also used for:
  • the processing unit 1302 is also used for:
  • the transceiver unit 1301 is also used to:
  • Second indication information Receive at least one of the following from the sensing initiator: second indication information, third indication information, fourth indication information, fifth indication information, sixth indication information;
  • the second indication information is used to indicate whether the sensing initiator supports a threshold-based sensing process; the third indication information is used to indicate that the sensing initiator supports the roles of sensing initiator, sensing responder, sensing sender and/or sensing receiver; the second The fourth indication information is used to indicate the initial threshold; the fifth indication information is used to indicate whether the threshold used in the sensing process of the sensing session is variable; the sixth indication information is used to indicate the sensing measurement result of the instant feedback or delayed feedback sensing session.
  • each functional unit in each embodiment of the present application It can be integrated in one processing unit, or physically exist separately, or two or more units can be integrated in one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
  • the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or part of the contribution to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .
  • the embodiment of the present application also provides a schematic structural diagram of a communication device 1400 .
  • the communication device 1400 may be used to implement the methods described in the foregoing method embodiments.
  • the communication device 1400 includes one or more processors 1401 .
  • the processor 1401 may be a general-purpose processor or a special-purpose processor. For example, it may be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processing unit can be used to control communication devices (such as base stations, terminals, or chips, etc.), execute software programs, and process data of software programs.
  • the communication device may include a transceiver unit to implement signal input (reception) and output (transmission).
  • the transceiver unit may be a transceiver, a radio frequency chip and the like.
  • the communication device 1400 includes one or more processors 1401, and the one or more processors 1401 can implement the methods described in the above-mentioned embodiments.
  • processor 1401 may also implement other functions in addition to implementing the methods in the foregoing embodiments.
  • the processor 1401 may execute instructions, so that the communication device 1400 executes the methods described in the foregoing method embodiments.
  • the instruction may be stored in whole or in part in the processor, such as instruction 1403, or may be stored in whole or in part in the memory 1402 coupled to the processor, such as instruction 1404, or may be jointly made by instructions 1403 and 1404
  • the communication device 1400 executes the methods described in the foregoing method embodiments.
  • the communication device 1400 may also include a logic circuit, and the logic circuit may implement the methods described in the foregoing method embodiments.
  • the communication device 1400 may include one or more memories 1402, on which are stored instructions 1404, the instructions can be executed on the processor, so that the communication device 1400 executes The method described in the method example above.
  • data may also be stored in the memory.
  • Instructions and/or data may also be stored in the optional processor.
  • the one or more memories 1402 may store the corresponding relationships described in the above embodiments, or related parameters or tables involved in the above embodiments.
  • the processor and memory can be set separately or integrated together.
  • the communication device 1400 may further include a transceiver 1405 and an antenna 1406 .
  • the processor 1401 may be called a processing unit, and controls the device (terminal or base station).
  • the transceiver 1405 may be called a transceiver, a transceiver circuit, an input-output interface circuit, or a transceiver unit, etc., and is used to realize the transceiver function of the device through the antenna 1406 .
  • the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash.
  • the volatile memory can be Random Access Memory (RAM), which acts as external cache memory.
  • RAM Static Random Access Memory
  • SRAM Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • Synchronous Dynamic Random Access Memory Synchronous Dynamic Random Access Memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM, DDR SDRAM enhanced synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM synchronous connection dynamic random access memory
  • Synchlink DRAM, SLDRAM Direct Memory Bus Random Access Memory
  • Direct Rambus RAM Direct Rambus RAM
  • the embodiment of the present application also provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, the method described in the above-mentioned method embodiment is implemented.
  • the embodiment of the present application also provides a computer program product, which implements the method described in the foregoing method embodiments when the computer program product is executed by a computer.
  • An embodiment of the present application further provides a communication system, where the communication system includes a first device, a second device, and a third device.
  • the first device can implement the steps performed by the first device in the embodiment shown in FIG. 4 above
  • the second device can implement the steps performed by the second device in the embodiment shown in FIG. 4 above
  • the third device can implement the above steps. Steps performed by the third device in the embodiment shown in FIG. 4 .
  • the communication system further includes a fourth device, and the fourth device is configured to perform the steps performed by the fourth device in the above embodiment shown in FIG. 4; or, the communication system includes a sensing initiator and a sensing sending end, or the sensing initiator terminal and sensing receiver.
  • the sensing initiator is configured to execute the steps performed by the sensing initiator in the embodiment shown in FIG. 7 above.
  • the sensing sending end is configured to execute the steps performed by the sensing sending end in the embodiment shown in FIG. 7 above
  • the sensing receiving end is configured to execute the steps executed by the sensing receiving end in the embodiment shown in FIG. 7 above.
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server or data center via wired (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media.
  • the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (Digital Video Disc, DVD)), or a semiconductor medium (for example, a solid state hard drive (Solid State Disk, SSD)) etc.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a high-density digital video disc (Digital Video Disc, DVD)
  • a semiconductor medium for example, a solid state hard drive (Solid State Disk, SSD)
  • the embodiment of the present application also provides a processing device, including a processor and an interface; the processor is configured to execute the method described in the above method embodiment.
  • the above-mentioned processing device may be a chip, and the processor may be implemented by hardware or by software.
  • the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software
  • the processor may be a general-purpose processor, which is implemented by reading software codes stored in the memory, and the memory may be integrated in the processor, or may be located outside the processor and exist independently.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or integrated. to another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.
  • a unit described as a separate component may or may not be physically separated, and a component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present application.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage media may be any available media that can be accessed by a computer.
  • computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage media or other magnetic storage devices, or may be used to carry or store information in the form of instructions or data structures desired program code and any other medium that can be accessed by a computer.
  • Any connection can suitably be a computer-readable medium.
  • the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave
  • coaxial cable , fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwave
  • disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disc, and blu-ray disc, where discs usually reproduce data magnetically, and discs Lasers are used to optically reproduce the data. Combinations of the above should also be included within the scope of computer-readable media.

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Abstract

本申请公开了一种通信方法以及装置，本申请提供的通信方法包括：第一设备接收来自第二设备的多个空数据分组NDP，多个NDP中一个NDP对应一个信道状态信息CSI；当满足第一条件时，第一设备向第三设备发送第一信息，第一信息用于指示CSI变化程度超过第一门限值；第一条件包括以下任一项：第一设备的多个CSI变化程度中第一CSI变化程度超过第一门限值、多个CSI变化程度中超过第一门限值的CSI变化程度数目占多个CSI变化程度的比值大于第二门限值；多个CSI变化程度是基于多个NDP对应的CSI确定得到的。上述提供针对第一设备的多个CSI变化程度的情况，第一设备向第三设备反馈CSI变化程度的具体方案，以实现对无线环境的有效感知。

Description

通信方法以及装置
本申请要求于2021年8月11日提交中国专利局，申请号为202110921247.7，发明名称为“通信方法以及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种通信方法以及装置。
背景技术
无线无源感知(以下简称感知)是一种不需要目标物携带信号源，如电子标签，即可感知目标物状态的技术。
具体而言，感知过程中的设备可以包括：感知发送端以及感知接收端。感知发送端可以发送测量信号，如空数据分组(null data packet，NDP)。相应地，感知接收端可接收到受目标物干扰的测量信号，并确定预设的参考测量信号与受目标物干扰的测量信号之间的信道状态信息(channel state information，CSI)。具体的，感知发送端可以发送两个NDP，相应的，感知接收端可以通过该两个NDP确定两个CSI，并通过该两个CSI确定CSI变化程度。感知发送端向感知接收端发送反馈请求(feedback request)，若感知接收端确定得到CSI变化程度满足阈值条件，感知接收端可以向感知发送端反馈CSI变化程度满足阈值条件，即认为CSI变化程度较大。若感知接收端确定得到CSI变化程度不满足阈值条件，感知接收端可以向感知发送反馈CSI变化程度不满足阈值条件，即认为CSI变化程度较小。
但是，当感知接收端接收到多个NDP，感知接收端通过多个NDP确定得到多个CSI变化程度，感知接收端应当如何向感知发送端反馈CSI变化程度，是值得考虑的问题。
发明内容
本申请提供了一种通信方法以及装置，用于实现第一设备针对多个CSI变化程度向第二设备反馈CSI变化程度的大小，实现对无线环境的有效感知。
本申请第一方面提供一种通信方法，包括：
第一设备接收来自第二设备的多个NDP，多个NDP中一个NDP对应一个CSI；当满足第一条件时，第一设备向第三设备发送第一信息，第一信息用于指示CSI变化程度超过第一门限值；第一条件包括以下任一项：第一设备的多个CSI变化程度中第一CSI变化程度超过第一门限值、多个CSI变化程度中超过第一门限值的CSI变化程度数目占多个CSI变化程度的比值大于第二门限值。该多个CSI变化程度是基于多个NDP对应的CSI确定得到的。
上述技术方案中，针对第一设备的多个CSI变化程度的情况，提供了第一设备向第三设备反馈CSI变化程度的多种可能的条件，从而实现第一设备针对多个CSI变化程度向第三设备反馈CSI变化程度的大小。第一设备通过多个NDP确定多个CSI变化程度，并反馈 CSI变化程度，有利于提高感知的精度。第一条件可以为：第一设备的多个CSI变化程度中第一CSI变化程度超过第一门限值。也就是说如果多个CSI变化程度存在一个CSI变化程度超过第一门限值，则可以第一设备可以向第二设备上报第一信息，以指示CSI变化程度较大。实现感知过程中第一设备可以及时上报CSI变化程度实现对无线环境的有效感知。第一条件也可以为：多个CSI变化程度中超过第一门限值的CSI变化程度数目占多个CSI变化程度的比值大于第二门限值。也就是第一设备可以通过超过第一门限值的CSI变化程度的占比反馈CSI变化程度。由于超过第一门限值的CSI变化程度的占比超过一定阈值，那么可以理解的是无线环境有较大的变动，因此第一设备可以及时上报CSI变化程度实现对无线环境的有效感知。
一种可能的实现方式中，第二设备与所述第三设备为同一设备，第一设备为感知接收端，第二设备为感知发送端。
上述实现方式示出了感知场景中，第一设备、第二设备和第三设备的一些可能的角色。该实现方式中，第二设备与所述第三设备为同一设备。也就是感知发送端触发感知接收端反馈CSI变化程度的大小。
另一种可能的实现方式中，第一设备为第一感知接收端，第二设备为感知发送端，第三设备为感知发起端、或第二感知接收端。
上述实现方式中示出了感知场景中，第一设备、第二设备和第三设备的另一种可能的角色。该实现方式中，第三设备可以为感知发起端，感知发起端可以触发第一感知接收端反馈CSI变化程度的大小，从而获知无线环境的变化情况。而第三设备也可以第二感知接收端，第二感知接收端触发第一感知接收端反馈CSI变化程度的大小，从而获知无线环境的变化情况。
另一种可能的实现方式中，多个CSI变化程度中的一个CSI变化程度是第一设备通过至少两个CSI计算得到的CSI变化程度。
上述实现方式中示出了CSI变化程度的一种可能的计算方式，CSI变化程度可以是通过至少两个CSI计算得到的CSI变化程度。CSI变化程度的大小可以间接表征无线环境的变化情况。
另一种可能的实现方式中，方法还包括：第一设备通过多个NDP对应的CSI确定多个CSI变化程度。上述实现方式示出了第一设备获取多个CSI变化程度的一种可能的实现方式，从而使得方案更为全面。
另一种可能的实现方式中，方法还包括：第一设备接收来自第三设备的反馈请求，反馈请求用于触发第一设备反馈感知测量结果。
上述实现方式中，第三设备可以触发第一设备反馈感知测量结果。从而便于第三设备获取到感知测量结果，以获知无线环境的具体变化信息，实现对无线环境的有效感知。
另一种可能的实现方式中，第一CSI变化程度为多个CSI变化程度中最大的CSI变化程度。在该实现方式中，第一CSI变化程度是最大的CSI变化程度，第一设备可以通过最大的CSI变化程度与第一门限值对比，以反馈CSI变化程度的大小。由于最大的CSI变化程度可以代表无线环境的变化程度，使得第一设备能够基于最大的CSI变化程度合理有效 的反馈CSI变化程度，从而提高感知的有效性和精度；或者，
第一CSI变化程度为第一设备通过第一CSI与第二CSI计算得到的CSI变化程度，第一CSI为第一设备通过第一NDP确定得到的CSI，第一NDP为第一设备接收到的倒数第Y个空数据分组NDP，Y为大于或等于1的整数；第二CSI是第一设备通过预指示的NDP确定得到的CSI，或者，第二CSI是第一设备通过第一NDP的前第w个NDP确定得到的CSI，w为大于或等于1的整数。从而实现第一设备可以结合相应的CSI变化程度反馈CSI变化程度的大小。避免由于第一设备的硬件能力或计算能力导致无法及时计算CSI变化程度导致第一设备无法反馈CSI变化程度。第二CSI可以是第一设备通过预指示的NDP确定得到的CSI，通常预指示的NDP对应的CSI是静态或常见的无线环境的CSI。因此第一设备通过第一CSI与该第二CSI确定得到的CSI变化程度可以一定程度上表征无线环境的变化情况，从而实现有效的感知。或者，第二CSI是第一设备通过第一NDP的前第w个NDP确定得到的CSI，第一设备通过第一CSI与该第二CSI确定得到的CSI变化程度可以及时的跟踪无线环境的变化情况，以便于合理的反馈CSI变化程度的大小。例如，在CSI变化程度较小的情况下，可以避免第三设备触发第一设备反馈感知测量结果，从而减少资源开销；或者，
第一CSI变化程度是第一设备通过第一CSI与CSI集合中的CSI计算得到的CSI变化程度，第一CSI为第一设备通过第一NDP确定得到的CSI，第一NDP为第一设备接收到的倒数第Y个NDP，Y为大于或等于1的整数；CSI集合中包括X个CSI，X个CSI是第一设备通过第一NDP的前X个NDP分别确定得到的CSI，X为大于或等于2的整数。该实现方式中第一设备结合第一CSI和多个CSI计算得到第一CSI变化程度，也就是说第一设备综合了多个CSI来表征CSI变化程度，有利于第三设备从整体上感知无线环境的变化情况，从而提高感知的有效性。
另一种可能的实现方式中，方法还包括：第一设备向第三设备发送多个CSI变化程度中最大的CSI变化程度。
在该实现方式中，最大的CSI变化程度可以代表无线环境的变化程度，第一设备反馈最大的CSI变化程度，有利于第三设备确定CSI变化程度的大小，从而获知无线环境的变化。
另一种可能的实现方式中，多个CSI变化程度中的第i个CSI变化程度是第一设备通过第i+1个CSI与第i个CSI计算得到的CSI变化程度，第i+1个CSI是第一设备通过第一设备接收到的第i+1个NDP确定得到的CSI，第i个CSI是第一设备通过第一设备接收到的第i个NDP确定得到的CSI，i为大于或等于1的整数。在该实现方式中，示出了CSI变化程度的计算方式，第一设备可以通过相邻的CSI计算CSI变化程度，这样第一设备可以实时获知无线环境的变化，有利于第一设备合理的基于该多个CSI变化程度反馈CSI变化程度的大小；或者，
第i个CSI变化程度是第一设备通过第i+1个CSI与第二CSI计算得到的CSI变化程度，第i+1个CSI是第一设备通过第一设备接收到的第i+1个NDP确定得到的CSI，第二CSI是第一设备通过预指示的NDP确定得到的CSI，或者，第二CSI是第一设备通过第一NDP的前第w个NDP确定得到的CSI，第一NDP为第一设备接收到的倒数第Y个空数据分组 NDP，Y为大于或等于1的整数，w为大于或等于1的整数，i为大于或等于1的整数。在该可能的实现方式中，第二CSI可以是第一设备通过预指示的NDP确定得到的CSI，通常预指示的NDP对应的CSI是静态或常见的无线环境的CSI。因此第一设备通过第i+1个CSI与该第二CSI确定得到的CSI变化程度可以一定程度上表征无线环境的变化情况，从而实现有效的感知。或者，第二CSI是第一设备通过第一NDP的前第w个NDP确定得到的CSI，第一设备通过第一CSI与该第二CSI确定得到的CSI变化程度可以及时的跟踪无线环境的变化情况，以便于合理的反馈CSI变化程度的大小；或者，
第i个CSI变化程度是第一设备通过第i+1个CSI与第i-Q个CSI计算得到的CSI变化程度，第i+1个CSI是第一设备通过第一设备接收到的第i+1个NDP确定得到的CSI，第i-Q个CSI是第一设备通过第一设备接收到的第i-Q个NDP确定得到的CSI，i为大于或等于1的整数，Q为大于或等于1的整数，i大于Q。该实现方式中，第一设备通过第i+1个CSI与第i-Q个CSI计算得到的CSI变化程度。这样有利于第一设备获知一段时间内无线环境的变化情况，从而实现有效的感知，帮助第一设备更合理的反馈CSI变化程度的大小；或者，
第i个CSI变化程度是第一设备通过第i+1个CSI与所述第i+1个CSI的前Z个CSI计算得到的CSI变化程度，第i+1个CSI是第一设备通过第一设备接收到的第i+1个NDP确定得到的CSI，所述第i+1个CSI的前Z个CSI是第一设备通过第一设备接收到第i+1个NDP的前Z个NDP分别确定得到的CSI，i为大于或等于1的整数，Z为大于或等于1的整数。该实现方式中第一设备结合第i+1个CSI与所述第i+1个CSI的前Z个CSI计算得到CSI变化程度，也就是说第一设备综合了多个CSI来表征CSI变化程度，有利于第一设备从整体上感知无线环境的变化情况，从而提高感知的有效性。
另一种可能的实现方式中，方法还包括：
第一设备接收来自第二设备或第三设备的第一指示信息，第一指示信息用于指示Y，Y为大于或等于1的整数。
由此可知，第一设备接收来自第二设备或第三设备的第一指示信息，以确定第一NDP是第一设备接收到的倒数第Y个NDP，从而实现第一设备及时地结合相应的CSI变化程度反馈CSI变化程度的大小。避免由于第一设备的硬件能力或计算能力导致无法及时计算CSI变化程度导致第一设备无法反馈CSI变化程度。
另一种可能的实现方式中，方法还包括：
当不满足第一条件时，第一设备向第三设备发送第二信息，第二信息用于指示CSI变化程度未超过第一门限值。
上述实现方式中，针对不满足第一条件的情况，第一设备可以向第三设备反馈CSI变化程度未超过第一门限值。从而使得方案更为全面。
另一种可能的实现方式中，方法还包括：
第一设备接收来自第二设备或第三设备发送的以下至少一项信息：第二指示信息、第三指示信息；第二指示信息用于指示第一设备采用的多个CSI变化程度计算方式，和/或，用于指示第一设备采用多个CSI变化程度场景或单个CSI变化程度场景；第三指示信息用 于指示所述第一设备中参与多个CSI变化程度计算的CSI中第一设备最晚接收到的空数据分组NDP对应的CSI。
上述实现方式中，第一设备可以接收上述指示信息以确定CSI变化程度计算的一些相关的指示信息，以便于第一设备计算CSI变化程度。
本申请第二方面提供一种通信方法，包括：
当满足第一条件时，第三设备接收来自第一设备的第一信息，第一信息用于指示CSI变化程度超过第一门限值；第一条件包括以下任一项：第一设备的多个CSI变化程度中第一CSI变化程度超过第一门限值、多个CSI变化程度中超过第一门限值的CSI变化程度数目占多个CSI变化程度的比值大于第二门限值，多个CSI变化程度是基于多个NDP对应的CSI确定得到的，多个NDP是第一设备从第二设备接收的，多个NDP中一个NDP对应一个CSI。
上述技术方案中，针对第一设备的多个CSI变化程度的情况，提供了第一设备向第三设备反馈CSI变化程度的多种可能的条件，从而实现第一设备针对多个CSI变化程度向第三设备反馈CSI变化程度的大小。第一设备通过多个NDP确定多个CSI变化程度，有利于提高感知的精度。第一条件可以为：第一设备的多个CSI变化程度中第一CSI变化程度超过第一门限值。也就是说如果多个CSI变化程度存在一个CSI变化程度超过第一门限值，则可以第一设备可以向第二设备上报第一信息，以指示CSI变化程度较大。从而实现感知过程中第一设备可以及时上报CSI变化程度实现对无线环境的有效感知。而第一条件也可以为：多个CSI变化程度中超过第一门限值的CSI变化程度数目占多个CSI变化程度的比值大于第二门限值。也就是第一设备可以通过超过第一门限值的CSI变化程度的占比确定上报第一信息。由于超过第一门限值的CSI变化程度的占比超过一定阈值，那么可以理解的是无线环境有较大的变动，因此第一设备可以及时上报CSI变化程度以便于第三设备获知CSI变化程度，从而实现对无线环境的有效感知。
一种可能的实现方式中，第二设备与所述第三设备为同一设备，第一设备为感知接收端，第二设备为感知发送端。
上述实现方式示出了感知场景中，第一设备、第二设备和第三设备的一些可能的角色。该实现方式中，第二设备与所述第三设备为同一设备。也就是感知发送端触发感知接收端反馈CSI变化程度的大小。
另一种可能的实现方式中，第一设备为第一感知接收端，第二设备为感知发送端，第三设备为感知发起端、或第二感知接收端。
上述实现方式中示出了感知场景中，第一设备、第二设备和第三设备的另一种可能的角色。该实现方式中，第三设备可以为感知发起端，感知发起端可以触发第一感知接收端反馈CSI变化程度的大小，从而获知无线环境的变化情况。而第三设备也可以第二感知接收端，第二感知接收端触发第一感知接收端反馈CSI变化程度的大小，从而获知无线环境的变化情况。
另一种可能的实现方式中，多个CSI变化程度中的一个CSI变化程度是第一设备通过至少两个CSI计算得到的CSI变化程度。
上述实现方式中示出了CSI变化程度的一种可能的计算方式，CSI变化程度可以是通过至少两个CSI计算得到的CSI变化程度。CSI变化程度的大小可以间接表征无线环境的变化情况。
另一种可能的实现方式中，方法还包括：第三设备向第一设备发送反馈请求，反馈请求用于触发第一设备反馈感知测量结果。
上述实现方式中，第三设备可以触发第一设备反馈感知测量结果。从而便于第三设备获取到感知测量结果，以获知无线环境的具体变化信息，实现对无线环境的有效感知。
另一种可能的实现方式中，第一CSI变化程度为多个CSI变化程度中最大的CSI变化程度。在该实现方式中，第一CSI变化程度是最大的CSI变化程度，第一设备可以通过最大的CSI变化程度与第一门限值对比，以反馈CSI变化程度的大小。由于最大的CSI变化程度可以代表无线环境的变化程度，使得第一设备能够基于最大的CSI变化程度合理有效的反馈CSI变化程度，以便于第三设备获知CSI变化程度，从而实现对无线环境的有效感知。或者，
第一CSI变化程度为第一设备通过第一CSI与第二CSI计算得到的CSI变化程度，第一CSI为第一设备通过第一NDP确定得到的CSI，第一NDP为第一设备接收到的倒数第Y个空数据分组NDP，Y为大于或等于1的整数；第二CSI是第一设备通过预指示的NDP确定得到的CSI，或者，第二CSI是第一设备通过第一NDP的前第w个NDP确定得到的CSI，w为大于或等于1的整数。从而实现第一设备及时地结合相应的CSI变化程度反馈CSI变化程度的大小。避免由于第一设备的硬件能力或计算能力导致无法及时计算CSI变化程度导致第一设备无法准确反馈CSI变化程度。第二CSI可以是第一设备通过预指示的NDP确定得到的CSI，通常预指示的NDP对应的CSI是静态或常见的无线环境的CSI。因此第一设备通过第一CSI与该第二CSI确定得到的CSI变化程度可以一定程度上表征无线环境的变化情况，从而实现有效的感知。或者，第二CSI是第一设备通过第一NDP的前第w个NDP确定得到的CSI，第一设备通过第一CSI与该第二CSI确定得到的CSI变化程度可以及时的跟踪无线环境的变化情况，以便于合理的反馈CSI变化程度的大小。以便于第三设备获知CSI变化程度，从而实现对无线环境的有效感知。例如，在CSI变化程度较小的情况下，可以避免第三设备触发第一设备反馈感知测量结果，从而减少资源开销。或者，
第一CSI变化程度是第一设备通过第一CSI与CSI集合中的CSI计算得到的CSI变化程度，第一CSI为第一设备通过第一NDP确定得到的CSI，第一NDP为第一设备接收到的倒数第Y个NDP，Y为大于或等于1的整数；CSI集合中包括X个CSI，X个CSI是第一设备通过第一NDP的前X个NDP分别确定得到的CSI，X为大于或等于2的整数。该实现方式中第一设备结合第一CSI和多个CSI计算得到第一CSI变化程度，也就是说第一设备综合了多个CSI来表征CSI变化程度，有利于第三设备通过CSI变化程度从整体上感知无线环境的变化情况，从而提高感知的有效性。
另一种可能的实现方式中，方法还包括：
第三设备接收来自第一设备的多个CSI变化程度中最大的CSI变化程度。
在该实现方式中，最大的CSI变化程度可以代表无线环境的变化程度，第一设备反馈 最大的CSI变化程度，有利于第三设备确定CSI变化程度的大小，从而获知无线环境的变化。
另一种可能的实现方式中，多个CSI变化程度中的第i个CSI变化程度是第一设备通过第i+1个CSI与第i个CSI计算得到的CSI变化程度，第i+1个CSI是第一设备通过第一设备接收到的第i+1个NDP确定得到的CSI，第i个CSI是第一设备通过第一设备接收到的第i个NDP确定得到的CSI，i为大于或等于1的整数。在该实现方式中，示出了CSI变化程度的计算方式，第一设备可以通过相邻的CSI计算CSI变化程度，这样第一设备可以实时获知无线环境的变化，有利于第一设备基于该多个CSI变化程度反馈CSI变化程度的大小，从而实现对信道的实时监测。或者，
第i个CSI变化程度是第一设备通过第i+1个CSI与第二CSI计算得到的CSI变化程度，第二CSI是第一设备通过预指示的NDP确定得到的CSI，或者，第二CSI是第一设备通过第一NDP的前第w个NDP确定得到的CSI，第一NDP为第一设备接收到的倒数第Y个空数据分组NDP，Y为大于或等于1的整数，w为大于或等于1的整数；第i+1个CSI是第一设备通过第一设备接收到的第i+1个NDP确定得到的CSI，i为大于或等于1的整数；在该可能的实现方式中，第二CSI可以是第一设备通过预指示的NDP确定得到的CSI，通常预指示的NDP对应的CSI是静态或常见的无线环境的CSI。因此第一设备通过第i+1个CSI与该第二CSI确定得到的CSI变化程度可以一定程度上表征无线环境的变化情况，从而实现有效的感知。或者，第二CSI是第一设备通过第一NDP的前第w个NDP确定得到的CSI，第一设备通过第一CSI与该第二CSI确定得到的CSI变化程度可以及时的跟踪无线环境的变化情况，以便于合理的反馈CSI变化程度的大小。或者，
第i个CSI变化程度是第一设备通过第i+1个CSI与第i-Q个CSI计算得到的CSI变化程度，第i+1个CSI是第一设备通过第一设备接收到的第i+1个NDP确定得到的CSI，第i-Q个CSI是第一设备通过第一设备接收到的第i-Q个NDP确定得到的CSI，i为大于或等于1的整数，Q为大于或等于1的整数，i大于Q。该实现方式中，第一设备通过第i+1个CSI与第i-Q个CSI计算得到的CSI变化程度。这样有利于第一设备获知一段时间内无线环境的变化情况，从而实现有效的感知，帮助第一设备更合理的反馈CSI变化程度的大小。或者，
第i个CSI变化程度是第一设备通过第i+1个CSI与所述第i+1个CSI的前Z个CSI计算得到的CSI变化程度，第i+1个CSI是第一设备通过第一设备接收到的第i+1个NDP确定得到的CSI，所述第i+1个CSI的前Z个CSI是第一设备通过第一设备接收到第i+1个NDP的前Z个NDP分别确定得到的CSI，i为大于或等于1的整数，Z为大于或等于1的整数。该实现方式中第一设备结合第i+1个CSI与所述第i+1个CSI的前Z个CSI计算得到CSI变化程度，也就是说第一设备综合多个CSI来表征CSI变化程度，有利于第一设备从整体上感知无线环境的变化情况，从而提高感知的有效性。
另一种可能的实现方式中，方法还包括：
第三设备向第一设备发送第一指示信息，第一指示信息用于指示Y，Y为大于或等于1的整数。
由此可知，第三设备向第一设备发送第一指示信息，以便于第一设备确定第一NDP是第一设备接收到的倒数第Y个NDP，从而实现第一设备及时地结合相应的CSI变化程度反馈CSI变化程度的大小。避免由于第一设备的硬件能力或计算能力导致无法及时计算CSI变化程度导致第一设备无法反馈CSI变化程度。
另一种可能的实现方式中，方法还包括：
当不满足第一条件时，第三设备接收来自第一设备的第二信息，第二信息用于指示CSI变化程度未超过第一门限值。
上述实现方式中，针对不满足第一条件的情况，第三设备接收来自第一设备的第二信息，第二信息用于指示CSI变化程度未超过第一门限值，从而使得方案更为全面。
另一种可能的实现方式中，方法还包括：
所述第三设备向所述第一设备发送以下至少一项信息：第二指示信息、第三指示信息；
第二指示信息用于指示第一设备采用的多个CSI变化程度计算方式，和/或，用于指示第一设备采用多个CSI变化程度场景或单个CSI变化程度场景；
第三指示信息用于指示所述第一设备中参与多个CSI变化程度计算的CSI中第一设备最晚接收到的空数据分组NDP对应的CSI。
上述实现方式中，第一设备可以接收上述指示信息以确定CSI变化程度计算的一些相关的指示信息，以便于第一设备计算CSI变化程度。
本申请第三方面提供一种通信方法，包括：
感知发起端生成第一帧，第一帧用于建立第一感知会话；第一帧包括至少一个用户字段，至少一个用户字段包括第一用户字段，第一用户字段包括以下指示一项：关联标识、响应端角色指示、用户阈值指示、第一用户信息、第二用户信息；第一感知会话为感知发起端与感知发送端或感知接收端之间建立的感知会话，关联标识为感知发送端或感知接收端的标识，关联标识用于标识第一感知会话，响应端角色指示用于感知发送端的角色或感知接收端的角色；用户阈值指示用于指示第一感知会话的感知过程所采用的用户级别的阈值；第一用户信息是依赖响应端角色的用户信息；第二用户信息是依赖于会话类型或测量建立类型的用户信息；感知发起端发送第一帧。
上述技术方案中，感知发起端可以发起第一帧，以建立第一感知会话。由上述第一帧的相关介绍可知，感知发起端的第一帧可以指示第一感知会话的相关信息，例如，第一感知会话的感知过程所采用的用户级别的阈值、设备的角色信息等。由此可知，通过上述技术方案可以实现对感知会话的建立、感知会话的相关信息的下发，以便于感知发送端或感知接收端获取感知会话的相关信息，从而便于感知过程的执行。
一种可能的实现方式中，会话类型或测量建立类型包括以下任一种：感知发起端为感知发送端、感知发起端为感知接收端、感知发起端既不是感知发送端也不是感知接收端。
上述技术方案中示出了会话类型的几种可能的实现方式，以感知发起端可能承担的角色来区分感知会话的会话类型。
另一种可能的实现方式中，第一帧还包括公共字段，公共字段包括以下至少一项：测量建立标识、瞬时或延迟反馈指示、感知发送端反馈类型、感知接收端反馈类型、会话类 型或测量建立类型、公共阈值指示、阈值可变指示；
测量建立标识用于指示一个或多个感知会话的识别号；瞬时或延迟反馈指示用于指示瞬时反馈或延迟反馈一个或多个感知会话的感知测量结果；感知发送端反馈类型包括以下至少一项：非压缩的信道状态信息CSI、压缩的CSI、空数据分组NDP、感知测量结果、CSI变化程度的结果；感知接收端反馈类型包括以下至少一项：非压缩的信道状态信息CSI、压缩的CSI、空数据分组NDP、感知测量结果、CSI变化程度的结果；会话类型或测量建立类型包括以下任一种：感知发起端为感知发送端、感知发起端为感知接收端、感知发起端既不是感知发送端也不是感知接收端；公共阈值指示用于一个或多个感知会话的感知过程所采用的公共阈值；阈值可变指示用于指示一个或多个感知会话的感知过程中采用的阈值是否可变。
在该可能的实现方式中，第一帧还包括公共字段，公共字段可以包括一个或多个感知会话共享部分参数，从而实现感知发起端可以通过公共字段发送关于多个感知会话的相关信息，从而提高感知发起端发起感知会话的效率。
另一种可能的实现方式中，方法还包括：感知发起端发送第一信息；第一信息用于更新第一感知会话的感知过程中采用的阈值。
在该可能的实现方式中，感知发起端可以更新第一感知会话的感知过程中采用的阈值，从而实现对第一感知会话的感知过程中采用的阈值的修改，提高感知会话的相关信息的修改灵活性，感知发起端可以结合实际需求和实际传输情况动态修改阈值。以实现更有效的感知。
另一种可能的实现方式中，若感知发起端还承担感知接收端的角色，第一信息承载于空数据分组通告(null data packet announcement，NDPA)或反馈请求中；或者，
若感知发起端还承担感知接收端的角色，第一信息承载于反馈响应中；或者，
若感知发起端既不是感知发送端也不是感知接收端，则所述第一信息承载于响应帧中，所述响应帧用于感知发起端响应感知发送端或感知接收端反馈第一感知会话的感知测量结果。
上述技术方案中，结合感知发起端的角色提供了第一信息的承载载体。从而与目前的感知过程适配，无需重新定义消息以发送更新的阈值，提高了方案的实用性。
另一种可能的实现方式中，方法还包括：
感知发起端发送第一指示信息；第一指示信息用于指示感知发起将发送更新帧，更新帧用于更新第一感知会话的感知过程中采用的阈值；感知发起端发送更新帧。
上述技术方案中，提供了另一种更新阈值的方式，感知发起端可以通过更新帧更新阈值，实现对阈值的动态修改。感知发起端可以结合实际需求和实际传输情况动态修改阈值。以实现更有效的感知。
另一种可能的实现方式中，方法还包括：
感知发起端发送以下至少一项：第二指示信息、第三指示信息、第四指示信息、第五指示信息、第六指示信息；
第二指示信息用于指示感知发起端是否支持基于阈值的感知流程；第三指示信息用于 指示感知发起端支持成为感知发起端、感知响应端、感知发送端、和/或、感知接收端的角色；第四指示信息用于指示初始阈值；第五指示信息用于指示感知会话的感知过程中所采用的阈值是否可变；第六指示信息用于指示瞬时反馈或延迟反馈感知会话的感知测量结果。
上述技术方案中，感知发起端可以发送上述指示信息，以指示感知发起端的一些能力信息(例如，是否支持基于阈值的感知流程、支持成为的角色等信息)，从而便于系统中的其他设备获知感知发起端的相关信息，为后续建立感知会话提供准备，以便于更高效的建立感知会话。
本申请第四方面提供一种通信方法，包括：
感知发送端或感知接收端接收来自感知发起端的第一帧，第一帧用于建立第一感知会话；第一帧包括至少一个用户字段，至少一个用户字段包括第一用户字段，第一用户字段包括以下指示一项：关联标识、响应端角色指示、用户阈值指示、第一用户信息、第二用户信息；第一感知会话为感知发起端与感知发送端或感知接收端之间建立的感知会话，关联标识为感知发送端或感知接收端的标识，关联标识用于标识第一感知会话，响应端角色指示用于感知发送端的角色或感知接收端的角色；用户阈值指示用于指示第一感知会话的感知过程所采用的用户级别的阈值；第一用户信息是依赖响应端角色的用户信息；第二用户信息是依赖于会话类型或测量建立类型的用户信息；感知发送端或感知接收端根据第一帧确定第一感知会话的信息。
上述技术方案中，感知发起端可以发起第一帧，以建立第一感知会话。由上述第一帧的相关介绍可知，感知发起端的第一帧可以指示第一感知会话的相关信息，例如，第一感知会话的感知过程所采用的用户级别的阈值、设备的角色信息等。由此可知，通过上述技术方案可以实现对感知会话的建立、感知会话的相关信息的发送，以便于感知发送端或感知接收端获取第一感知会话的相关信息，从而便于感知流程的执行。
一种可能的实现方式中，会话类型或测量建立类型包括以下任一种：感知发起端为感知发送端、感知发起端为感知接收端、感知发起端既不是感知发送端也不是感知接收端。
上述技术方案中示出了会话类型的几种可能的实现方式，以感知发起端可能承担的角色来区分感知会话的会话类型。
另一种可能的实现方式中，第一帧还包括公共字段，公共字段包括以下至少一项：测量建立标识、瞬时或延迟反馈指示、感知发送端反馈类型、感知接收端反馈类型、会话类型或测量建立类型、公共阈值指示、阈值可变指示；
测量建立标识用于指示一个或多个感知会话的识别号；瞬时或延迟反馈指示用于指示瞬时反馈或延迟反馈一个或多个感知会话的感知测量结果；感知发送端反馈类型包括以下至少一项：非压缩的信道状态信息CSI、压缩的CSI、空数据分组NDP、感知测量结果、CSI变化程度的结果；感知接收端反馈类型包括以下至少一项：非压缩的信道状态信息CSI、压缩的CSI、空数据分组NDP、感知测量结果、CSI变化程度的结果；会话类型或测量建立类型包括以下任一种：感知发起端为感知发送端、感知发起端为感知接收端、感知发起端既不是感知发送端也不是感知接收端；公共阈值指示用于指示一个或多个感知会话的感知过程所采用的公共阈值；阈值可变指示用于指示一个或多个感知会话的感知过程中采用的 阈值是否可变。
在该可能的实现方式中，第一帧还包括公共字段，公共字段可以包括一个或多个感知会话共享部分参数，从而实现感知发起端可以通过公共字段发送关于多个感知会话的相关信息，从而提高感知发起端发起感知会话的效率。
另一种可能的实现方式中，方法还包括：
感知发送端或感知接收端接收来自感知发起端第一信息，第一信息用于更新第一感知会话的感知过程中采用的阈值；
感知发送端或感知接收端根据第一信息确定更新后的阈值。
在该可能的实现方式中，感知发送端或感知接收端接收来自感知发起端第一信息，第一信息用于更新第一感知会话的感知过程中采用的阈值。从而实现对第一感知会话的感知过程中采用的阈值的修改，提高感知会话的相关信息的修改灵活性，感知发起端可以结合实际需求和实际传输情况动态修改阈值。以实现更有效的感知。
另一种可能的实现方式中，若感知发起端还承担感知接收端的角色，第一信息承载于NDPA或反馈请求中；或者，
若感知发起端还承担感知接收端的角色，第一信息承载于反馈响应中；或者，
若感知发起端既不是感知发送端也不是感知接收端，则第一信息承载于响应帧中，响应帧用于感知发起端响应感知发送端或感知接收端反馈第一感知会话的感知测量结果。
上述技术方案中，结合感知发起端的角色提供了第一信息的承载载体。从而与目前的感知过程适配，无需重新定义消息以发送更新的阈值，提高了方案的实用性。
另一种可能的实现方式中，方法还包括：
感知发送端或感知接收端接收来自感知发起端的第一指示信息，第一指示信息用于指示感知发起将发送更新帧，更新帧用于更新第一感知会话的感知过程中采用的阈值；
感知发送端或感知接收端根据第一指示信息确定更新后的阈值；
感知发送端或感知接收端接收来自感知发起端的更新帧；
感知发送端或感知接收端根据更新帧确定更新后的阈值。
上述技术方案中，提供了另一种更新阈值的方式，感知发送端或感知接收端接收来自感知发起端的更新帧，实现对阈值的动态修改。感知发起端可以结合实际需求和实际传输情况动态修改阈值。以实现更有效的感知。
另一种可能的实现方式中，方法还包括：
感知发送端或感知接收端接收来自感知发起端的以下至少一项：第二指示信息、第三指示信息、第四指示信息、第五指示信息、第六指示信息；
第二指示信息用于指示感知发起端是否支持基于阈值的感知流程；第三指示信息用于指示感知发起端支持成为感知发起端、感知响应端、感知发送端和/或感知接收端的角色；第四指示信息用于指示初始阈值；第五指示信息用于指示感知会话的感知过程中所采用的阈值是否可变；第六指示信息用于指示瞬时反馈或延迟反馈感知会话的感知测量结果。
上述技术方案中，感知发送端或感知接收端接收来自感知发起端的以下至少一项：第二指示信息、第三指示信息、第四指示信息、第五指示信息、第六指示信息，这些指示信 息指示了感知发起端的一些能力信息(例如，是否支持基于阈值的感知流程、支持成为的角色等信息)，从而便于系统中的其他设备获知感知发起端的相关信息，为后续建立感知会话提供准备，以便于更高效的建立感知会话。
本申请第五方面提供一种通信装置，用于实现上述各种方法。该通信装置可以为上述第一方面中的第一设备，或者包含上述第一设备的装置，或者上述第一设备中包含的装置，比如芯片；或者，该通信装置可以为上述第二方面中的第三设备，或者包含上述第三设备的装置，或者上述第三设备中包含的装置。所述通信装置包括实现上述方法相应的模块、单元、或手段(means)，该模块、单元、或means可以通过硬件实现，软件实现，或者通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块或单元。
本申请第六方面提供一种通信装置，用于实现上述各种方法。该通信装置可以为上述第三方面中的感知发起端，或者包含上述感知发起端的装置，或者上述感知发起端中包含的装置，比如芯片；或者，该通信装置可以为上述第四方面中的感知发送端或感知接收端，或者包含上述感知发送端或感知接收端的装置，或者上述感知发送端或感知接收端中包含的装置。所述通信装置包括实现上述方法相应的模块、单元、或手段(means)，该模块、单元、或means可以通过硬件实现，软件实现，或者通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块或单元。
本申请第七方面提供一种通信装置，包括：处理器和接口电路，该接口电路用于与该通信装置之外的模块通信；该处理器用于运行计算机程序或指令以执行上述任一方面所述的方法。该通信装置可以为上述第一方面中的第一设备，或者包含上述第一设备的装置，或者上述第一设备中包含的装置，比如芯片；或者，该通信装置可以为上述第二方面中的第三设备，或者包含上述第三设备的装置，或者上述第三设备中包含的装置；或者，该通信装置可以为上述第三方面中的感知发起端，或者包含上述感知发起端的装置，或者上述感知发起端中包含的装置；或者，该通信装置可以为上述第四方面中的感知发送端或感知接收端，或者包含上述感知发送端或感知接收端的装置，或者上述感知发送端或感知接收端中包含的装置。
或者，该接口电路可以为代码/数据读写接口电路，该接口电路用于接收计算机执行指令(计算机执行指令存储在存储器中，可能直接从存储器读取，或可能经过其他器件)并传输至该处理器，以使该处理器运行计算机执行指令以执行上述任一方面所述的方法。
在一些可能的设计中，该通信装置可以为芯片或芯片系统。
本申请第八方面提供一种通信装置，包括：处理器；所述处理器用于与存储器耦合，并读取存储器中的指令之后，根据所述指令执行如上述任一方面所述的方法。该通信装置可以为上述第一方面中的第一设备，或者包含上述第一设备的装置，或者上述第一设备中包含的装置，比如芯片；或者，该通信装置可以为上述第二方面中的第三设备，或者包含上述第三设备的装置，或者上述第三设备中包含的装置；或者，该通信装置可以为上述第三方面中的感知发起端，或者包含上述感知发起端的装置，或者上述感知发起端中包含的装置；或者，该通信装置可以为上述第四方面中的感知发送端或感知接收端，或者包含上 述感知发送端或感知接收端的装置，或者上述感知发送端或感知接收端中包含的装置。
本申请第九方面提供一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在通信装置上运行时，使得通信装置可以执行上述任一方面所述的方法。该通信装置可以为上述第一方面中的第一设备，或者包含上述第一设备的装置，或者上述第一设备中包含的装置，比如芯片；或者，该通信装置可以为上述第二方面中的第三设备，或者包含上述第三设备的装置，或者上述第三设备中包含的装置；或者，该通信装置可以为上述第三方面中的感知发起端，或者包含上述感知发起端的装置，或者上述感知发起端中包含的装置；或者，该通信装置可以为上述第四方面中的感知发送端或感知接收端，或者包含上述感知发送端或感知接收端的装置，或者上述感知发送端或感知接收端中包含的装置。
本申请第十方面提供一种包含指令的计算机程序产品，当其在通信装置上运行时，使得通信装置可以执行上述任一方面所述的方法。该通信装置可以为上述第一方面中的第一设备，或者包含上述第一设备的装置，或者上述第一设备中包含的装置，比如芯片；或者，该通信装置可以为上述第二方面中的第三设备，或者包含上述第三设备的装置，或者上述第三设备中包含的装置；或者，该通信装置可以为上述第三方面中的感知发起端，或者包含上述感知发起端的装置，或者上述感知发起端中包含的装置；或者，该通信装置可以为上述第四方面中的感知发送端或感知接收端，或者包含上述感知发送端或感知接收端的装置，或者上述感知发送端或感知接收端中包含的装置。
本申请第十一方面提供一种通信装置(例如，该通信装置可以是芯片或芯片系统)，该通信装置包括处理器，用于实现上述任一方面中所涉及的功能。在一种可能的设计中，该通信装置还包括存储器，该存储器，用于保存必要的程序指令和数据。该通信装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件。
本申请第十二方面提供一种通信系统，该通信系统包括上述第一方面所述的第一设备和上述第二方面所述的第三设备；或者，
该通信系统包括上述第三方面所述的感知发起端和上述第四方面所述的感知发送端或感知接收端。
其中，第五方面至第十二方面中任一种设计方式所带来的技术效果可参见上述第一方面或第二方面或第三方面或第四方面中不同设计方式所带来的技术效果，此处不再赘述。
从以上技术方案可以看出，本申请实施例具有以下优点：
经由上述技术方案可知，第一设备接收来自第二设备的多个NDP，多个NDP中一个NDP对应一个CSI；当满足第一条件时，第一设备向第三设备发送第一信息，第一信息用于指示CSI变化程度超过第一门限值；第一条件包括以下任一项：第一设备的多个CSI变化程度中第一CSI变化程度超过第一门限值、多个CSI变化程度中超过第一门限值的CSI变化程度数目占多个CSI变化程度的比值大于第二门限值。该多个CSI变化程度是基于多个NDP对应的CSI确定得到的。由此可知，上述技术方案针对第一设备通过多个NDP对应的CSI确定得到多个CSI变化程度的情况下，第一设备向第二设备反馈CSI变化程度的方式，当满足第一条件时，第一设备向第三设备发送第一信息，第一信息用于指示CSI变化程度超过第一门限值。
附图说明
图1A为本申请实施例感知会话的感知过程包括的阶段一个示意图；
图1B为本申请实施例感知过程的一个示意图；
图2为本申请实施例感知系统的一个示意图；
图3为本申请实施例通信系统的一个示意图；
图4为本申请实施例通信方法的一个示意图；
图5A为本申请实施例通信方法的感知过程的一个示意图；
图5B为本申请实施例通信方法的感知过程的另一个示意图；
图5C为本申请实施例通信方法的感知过程的另一个示意图；
图6A为本申请实施例第一设备、第二设备与第三设备的一个角色示意图；
图6B为本申请实施例第一设备、第二设备与第三设备的另一个角色示意图；
图6C为本申请实施例第一设备、第二设备与第三设备的另一个角色示意图；
图7为本申请实施例通信方法的另一个示意图；
图8A为本申请实施例第一帧的一个结构示意图；
图8B为本申请实施例第一帧中的第一用户字段的一个结构示意图；
图8C为本申请实施例第一帧中的公共字段的一个结构示意图；
图9为本申请实施例感知会话的感知过程包括的阶段的另一个示意图；
图10为本申请实施例通信装置的一个结构示意图；
图11为本申请实施例通信装置的另一个结构示意图；
图12为本申请实施例通信装置的另一个结构示意图；
图13为本申请实施例通信装置的另一个结构示意图；
图14为本申请实施例通信装置的另一个结构示意图。
具体实施方式
本申请实施例提供了一种通信方法以及装置，用于当满足第一条件时，第一设备向第三设备发送第一信息，第一信息用于指示CSI变化程度超过第一门限值。
本申请将围绕可包括多个设备、组件、模块等的系统来呈现各个方面、实施例或特征。应当理解和明白的是，各个系统可以包括另外的设备、组件、模块等，并且/或者可以并不包括结合附图讨论的所有设备、组件、模块等。此外，还可以使用这些方案的组合。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
本申请实施例可以应用于无线局域网(wireless local area network，WLAN)的场景，可以适用于电气与电子工程师协会(institute of electrical and electronics engineers，IEEE)802.11系统标准，例如802.11a/b/g、802.11n、802.11ac、802.11ax，或其下一代，例如802.11be或更下一代的标准中。或者也可以适用于802.11bf。或者本 申请实施例也可以适用于物联网(internet of things，IoT)网络或车联网(Vehicle to X，V2X)网络等无线局域网系统中。当然，本申请实施例还可以应用于其他可能的通信系统，例如，LTE系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunicationsystem，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、第五代移动通信技术(the 5th generation，5G)通信系统以及未来的通信系统等。
以下对本申请实施例的部分用语进行解释说明，以便于本领域技术人员理解。
1、无线无源感知：一种利用物体对无线电波的影响对物体存在、动作、移动等进行感知的技术。
随着WLAN，第四代移动通信技术(the 4th generation，4G)以及5G等通信技术的发展，各类无线通信设备已大量部署在人们的日常生活中。无线通信设备可以包括手机、电脑、无线路由器、智能家居设备、无线传感器及无线路由器等。例如在家庭环境中往往有几个、十几个甚至上百个无线通信设备，这些无线通信设备距离用户以及家庭环境中的家具等物体很近。这些无线通信设备通过无线方式进行通信的过程中，会感知人体/物体对无线电波的干扰，因此利用此类干扰可以对人体/物体进行感知，这就是无线无源感知技术的工作原理。简单来说，无线无源感知技术是使用类似”人体雷达”的原理来感知周围人体/物体的。
在WLAN的场景中，无线无源感知技术可以为WLAN感知(Sensing)技术。下文主要以本申请实施例应用于WLAN的场景为例进行说明。
2、感知发送端(Sensing Transmitter)：在感知过程中发送用于感知测量的信号的设备。感知发送端也可以称为信号发送端，或发送端，或主控节点。感知发送端可以为无线接入点(access point，AP)或站点(station，STA)。
3、感知接收端(Sensing Receiver)：在感知过程中接收用于感知测量的信号，以及进行感知测量的设备。感知接收端也可以称为信号接收端，或接收端，或测量节点。感知接收端可以为AP或STA。
4、感知发起端：用于建立感知会话。感知发起端可以为AP或STA。
5、感知响应端：参与感知发起端发起的感知会话。感知响应端可以为为AP或STA。
6、本申请实施例涉及到的STA可以是各种具有无线通信功能的用户终端、用户装置，接入装置，订户站，订户单元，移动站，用户代理，用户装备或其他名称，其中，用户终端可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备，以及各种形式的用户设备(user equipment，UE)，移动台(mobile station，MS)，终端(terminal)，终端设备(terminal equipment)，便携式通信设备，手持机，便携式计算设备，娱乐设备，游戏设备或系统，全球定位系统设备或被配置为经由无线介质进行网络通信的任何其他合适的设备等。例如STA可以是通信服务器、路由器、交换机和网桥等，在此，为了描述方便，上面提到的设备统称为站点或STA。
7、本申请实施例所涉及到的AP和STA可以为适用于IEEE 802.11系统标准的AP和 STA。AP是部署在无线通信网络中为其关联的STA提供无线通信功能的装置，该AP可用作该通信系统的中枢，通常为支持802.11系统标准的媒体接入控制(media access control，MAC)和物理层(physical，PHY)的网络侧产品，例如可以为基站、路由器、网关、中继器，通信服务器，交换机或网桥等通信设备，其中，所述基站可以包括各种形式的宏基站，微基站，中继站等。在此，为了描述方便，上面提到的设备统称为AP。STA通常为支持802.11系统标准的MAC和PHY的终端产品，例如手机、笔记本电脑等。
8、CSI，指感知接收端对感知发送端发送的训练分组进行测量后得到的信道测量结果，可以用于反映感知接收端与感知发送端之间的链路的(无线)信道的状况。
在WLAN协议中，信道状态信息是针对每个正交频分复用(orthogonal frequency divisionmultiplexing，OFDM)子载波组进行测量，获取的子载波组对应的CSI矩阵。满维度的CSI矩阵的大小是发射天线数乘以接收天线数，每个矩阵元素是一个包含实部与虚部的复数。在天线数量大、子载波数目多的时候，未经压缩的CSI的总体数据量也很大。
其中在对信道进行测量时，发送端在训练分组中包含训练符号。感知接收端根据这些训练符号的结构进行信道测量。可选的，训练分组中可以不包含训练符号。
本申请中的“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本申请中所涉及的多个，是指两个或两个以上。例如，多个CSI变化程度包括至少两个CSI变化程度。本申请中所涉及的超过，是指大于、或者指大于或等于。例如，CSI变化程度超过第一门限值，是指CSI变化程度大于第一门限值，或者，指CSI变化程度大于或等于第一门限值。
另外，需要理解的是，在本申请的描述中，“第一”、“第二”等词汇，仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。
首先，介绍本申请中感知会话的感知过程。请参阅图1A，图1A示出了感知会话的感知过程包括的阶段。如图1A所示，感知会话的感知过程包括建立阶段、测量阶段、报告阶段和终止阶段。发送阶段并不是所有感知会话的感知过程所特有的阶段，在发现阶段中，系统中的设备之间进行关联，主要是设备之间交互一些感知相关的信息。建立阶段是感知会话的建立阶段，感知发起端在建立阶段发起感知会话。测量阶段是进行感知测量的阶段。报告阶段是进行感知报告的阶段。关于测量阶段和测量阶段的感知测量和感知反馈请参阅下述图1B的相关介绍。终止阶段是感知会话的终止阶段。
上述图1A所示的示例中，一个感知会话包括建立阶段、测量阶段、报告阶段和终止阶段。这些阶段在一个感知会话中可以出现一次或多次。感知会话是感知发起端发起的，感知会话由感知发起端与另一个设备的感知交互。如果感知发起端要与多个设备进行交互，感知发起端可以与该多个设备分别建立感知会话。即感知发起端可以建立多个感知会话。
下面结合图1B介绍感知过程。
请参阅图1B，Sensing Transmitter发送反馈请求(Feedback request)，Sensing Receiver1通过Sensing Transmitter发送的NDP确定CSI变化程度，若Sensing Receiver1 确定的CSI变化程度满足阈值条件，Sensing Receiver1发送反馈响应1(Feedback response)，反馈响应1中包括满足(Met)信息，以指示CSI变化程度较大。Sensing Receiver2通过Sensing Transmitter发送的NDP确定CSI变化程度，若Sensing Receiver2确定的CSI变化程度不满足阈值条件，Sensing Receiver2发送反馈响应2(Feedback response)，反馈响应2包括不满足(Not Met)信息，以指示CSI变化程度较小。这样，若Sensing Transmitter接收到反馈响应1，可以确定Sensing Receiver1测量到CSI的变化程度较大，若Sensing Transmitter接收到反馈响应2，可以确定Sensing Receiver2测量到CSI的变化程度较小。
需要说明的是，上述图1B所示的示例是以感知发起端为感知发送端，感知发送端通过发送NPDA和NDP的方式以实现感知接收端对无线环境的感知为例介绍本申请的技术方案。上述图1B所示的测量过程可以简称为非触发(Non trigger-based，Non-TB)的测量过程。若感知发起端不为感知发送端，感知发起端可以触发感知发送端发送NDP，以便于感知接收端对无线环境的感知，具体不做限定。具体的，感知发起端可以通过触发(Trigger)或询问(Polling)等方式触发感知发送端发送NDP。由感知发起端触发感知发送端发送NDP以便于感知接收端对无线环境的感知的测量过程可以称为基于触发(Trigger-based，TB)的测量过程。后文以非触发的测量过程为例介绍本申请的技术方案。
图2为本申请实施例适用的感知系统的一个示意图。请参见图2，感知系统包括一个或多个发送端(如图2中的发送端101)，以及一个或多个接收端(如图2中的接收端102)。发送端和接收端可以设置在同一个物理设备中，也可以设置在不同的物理设备中。
在感知过程中，发送端101发送信号，接收端102接收信号。接收端102接收到的信号可以包括直达信号104(不被检测目标103影响的信号)，以及受影响信号105(被检测目标103影响的信号)。当检测目标103运动时，受影响信号105会发生变化。接收端102接收到的直达信号104和受影响信号105的叠加无线信号也会相应发生变化，这样，接收端103会探测到无线信道发生了变化。
无线信道被量化为CSI，CSI可以用于反映无线信道的状况。无线信道的变化表现为CSI的幅度和相位的变化。
接收端102基于两次CSI的测量结果和一个阈值条件，可以判断CSI变化程度的大小，即信道变化程度的大小。例如在CSI的变化程度满足该阈值条件时，接收端102确定CSI的变化程度较大。在CSI的变化程度不满足该阈值条件时，接收端102确定CSI的变化程度较小。在CSI的变化程度较大时，接收端101可以与接收端102进一步交互，实现更准确的感知。
无线无源感知相比于摄像头或手环等穿戴设备进行感知，无需额外的硬件成本，用户也无需佩戴设备，便于对老人和小孩进行监护，并且对于可能的出现的盗贼入侵等情况也可以检测到；以及无线无源感知技术对用户隐私影响很小，可以监测到卧室和卫生间等区域，可以实现更全面的保护；另外无线无源感知技术可以在光照条件差，存在遮挡(如窗帘，木制家具等)等条件下也可以进行有效感知，也可以跨越墙壁进行多房间感知；并且无线无源无线感知的感知精度非常高，可以进行手势识别和呼吸睡眠等监测。
为了便于理解本申请实施例的技术方案，下面示出本申请实施例通信系统的一个示意图。图3为本申请实施例通信系统的一个示意图。请参阅图3，通信系统包括至少两个设备，如第一设备、第二设备和第三设备。
一种可能的实现方式中，第二设备与第三设备为同一设备，第一设备可以为感知接收端，第二设备可以为感知发送端。在该实现方式中，可选的，第二设备同时还可以为感知发起端。
另一种可能的实现方式中，第一设备可以为第一感知接收端、第二设备可以为感知发送端，第三设备可以为第二感知接收端或感知发起端。通信系统中的任一个设备可以为网络设备或终端设备，对此不做限定。
其中，上述网络设备为位于上述通信系统的网络侧，且具有无线收发功能的设备或可设置于该设备的芯片或芯片系统。该网络设备包括但不限于：无线保真(wireless fidelity，WiFi)系统中的接入点(access point，AP)，如家庭网关、路由器、服务器、交换机、网桥等，演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(baseband unit，BBU)，无线中继节点、无线回传节点、传输点(transmission and reception point，TRP或者transmission point，TP)等，还可以为5G，如，新空口(new radio，NR)系统中的gNB，或，传输点(TRP或TP)，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(distributed unit，DU)、具有基站功能的路边单元(road side unit，RSU)等。
上述终端设备为接入上述通信系统，且具有无线收发功能的终端或可设置于该终端的芯片或芯片系统。该终端设备也可以称为用户装置、接入终端、用户单元、用户站、移动站、移动台、远方站、站点、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。本申请的实施例中的终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、车载终端、具有终端功能的RSU等。
应当指出的是，本申请实施例中的方案还可以应用于其他通信系统中，相应的名称也可以用其他通信系统中的对应功能的名称进行替代。
应理解，图3仅为便于理解而示例的简化示意图，该通信系统中还可以包括其他网络设备，和/或，其他终端设备，图3中未予以画出。
下面结合具体实施例介绍本申请的技术方案。
图4为本申请实施例通信方法的一个实施例示意图。请参阅图4，通信方法包括：
401、第二设备向第一设备发送多个NDP。相应的，第一设备接收来自第二设备的多个NDP。
多个NDP中一个NDP对应一个CSI。第一设备为感知接收端，第二设备为感知发送端。可选的，多个NDP包括至少三个NDP。
具体的，第二设备通过测量多个NDP得到多个NDP对应的CSI。
例如，如图5A所示，多个NDP包括NDP1、NDP2和NDP3。感知接收端1可以分别测量NDP1、NDP2和NDP3，得到NDP1对应的CSI1、NDP2对应的CSI2以及NDP3对应的CSI3。
例如，如图5B所示，多个NDP包括NDP3、NDP4和NDP5。感知接收端1可以分别测量NDP3、NDP4和NDP5，得到NDP3对应的CSI3、NDP4对应的CSI4以及NDP5对应的CSI5。
可选的，图4所示的实施例还包括步骤401a。步骤401a可以在步骤402之前执行。
401a、第一设备通过多个NDP对应的CSI确定多个CSI变化程度。
其中，多个CSI变化程度中一个CSI变化程度是第一设备通过至少两个CSI计算得到的CSI变化程度。多个CSI变化程度包括至少两个CSI变化程度。
下面介绍多个CSI变化程度中的CSI变化程度的一些可能的计算方式。
方式1、多个CSI变化程度中的第i个CSI变化程度是第一设备通过第i+1个CSI与第i个CSI计算得到的CSI变化程度，i为大于或等于1的整数。
第i+1个CSI是第一设备通过第一设备接收到的第i+1个NDP确定得到的CSI。第i个CSI是第一设备通过第一设备接收到的第i个NDP确定得到的CSI。
例如，如图5A所示，感知接收端可以分别测量NDP1、NDP2和NDP3，得到NDP1对应的CSI1、NDP2对应的CSI2以及NDP3对应的CSI3。因此，多个CSI变化程度包括两个CSI变化程度。其中，第1个CSI变化程度是感知接收端通过CSI1与CSI2计算得到的CSI变化程度。第2个CSI变化程度是感知接收端通过CSI2与CSI3计算得到的CSI变化程度。
方式2、多个CSI变化程度中的第i个CSI变化程度是第一设备通过第i+1个CSI与第二CSI计算得到的CSI变化程度，i为大于或等于1的整数。
第i+1个CSI是第一设备通过第一设备接收到的第i+1个NDP确定得到的CSI。
第二CSI是第一设备通过预指示的NDP确定得到的CSI，或者，第二CSI是第一设备通过第一NDP的前第w个NDP确定得到的CSI，第一NDP为第一设备接收到的倒数第Y个NDP，Y为大于或等于1的整数，w为大于或等于1的整数。
例如，如图5A所示，第一设备为感知接收端1，感知接收端1可以分别测量NDP1、NDP2和NDP3，得到NDP1对应的CSI1、NDP2对应的CSI2以及NDP3对应的CSI3。可选的，
第一NDP为感知接收端1接收到的倒数第1个NDP，第一NDP为NDP3，w为1，因此第二CSI是感知接收端1通过NDP2确定得到的CSI2。因此，多个CSI变化程度包括两个CSI变化程度。其中，第1个CSI变化程度是感知接收端1通过CSI1与CSI2计算得到的CSI变化程度。第2个CSI变化程度是感知接收端1通过CSI2与CSI3计算得到的CSI变化程度。
例如，如图5B所示，第一设备为感知接收端1，感知接收端1可以分别测量NDP3、NDP4和NDP5，得到NDP3对应的CSI3、NDP4对应的CSI4和NSP5对应的CSI5。可选的，第一 NDP是预指示的NDP，例如，第一NDP是NDP3，第二CSI是感知接收端1通过NDP3确定得到的CSI。因此，多个CSI变化程度包括两个CSI变化程度。其中，第1个CSI变化程度是感知接收端1通过CSI4与CSI3计算得到的CSI变化程度。第2个CSI变化程度是感知接收端1通过CSI5与CSI3计算得到的CSI变化程度。
方式3、第i个CSI变化程度是第一设备通过第i+1个CSI与第i-Q个CSI计算得到的CSI变化程度，第i+1个CSI是第一设备通过第一设备接收到的第i+1个NDP确定得到的CSI，第i-Q个CSI是第一设备通过第一设备接收到的第i-Q个NDP确定得到的CSI，i为大于或等于1的整数，Q为大于或等于1的整数，i大于Q。
例如，如图5C所示，第一设备为感知接收端1，感知接收端1可以分别测量NDP1、NDP2、NDP3和NDP4，得到NDP1对应的CSI1、NDP2对应的CSI2、NDP3对应的CSI3和NDP4对应的CSI4。Q＝2，因此可知，多个CSI变化程度包括两个CSI变化程度。其中，第1个CSI变化程度是感知接收端1通过CSI3与CSI1计算得到的CSI变化程度，第2个CSI变化程度是感知接收端1通过CSI4与CSI2计算得到的CSI变化程度。
方式4、第i个CSI变化程度是第一设备通过第i+1个CSI与第i+1个CSI的前Z个CSI计算得到的CSI变化程度，第i+1个CSI是第一设备通过第一设备接收到的第i+1个NDP确定得到的CSI，第i+1个CSI的前Z个CSI是第一设备通过第一设备接收到第i+1个NDP的前Z个NDP分别确定得到的CSI，i为大于或等于1的整数，Z为大于或等于1的整数。
例如，如图5C所示，第一设备为感知接收端1，感知接收端1可以分别测量NDP1、NDP2、NDP3和NDP4，得到NDP1对应的CSI1、NDP2对应的CSI2、NDP3对应的CSI3和NDP4对应的CSI4。Z＝2，因此可知，多个CSI变化程度中包括四个CSI变化程度。感知接收端1可以通过CSI3与CSI1计算得到第1个CSI变化程度。感知接收端1可以通过CSI3与CSI2计算得到第2个CSI变化程度。感知接收端1可以通过CSI4与CSI2计算得到第3个CSI变化程度。感知接收端1可以通过CSI4与CSI3计算得到第4个CSI变化程度。
需要说明的是，可选的，第一设备确定一个NDP对应的CSI与其他CSI的CSI变化程度的时刻与第一设备接收到该NDP的时刻可以有一定的时间偏移量。例如，该NDP可以是第一设备接收到倒数第Y个NDP。Y为大于或等于1的整数。当Y＝1时，代表没有时间偏移，当Y＝2时，代表偏移一个NDP的接收时间。
例如，如图5C所示，感知接收端1通过NDP3对应的CSI3与NDP2对应的CSI2计算得到的CSI变化程度，此时感知接收端1接收到NDP4。NDP3是感知接收端1接收到的倒数第2个NDP。NDP4是感知接收端1接收到的倒数第1个NDP。也就是说一个NDP的接收时间可以作为第一设备通过NDP3对应的CSI3与NDP2对应的CSI2计算得到的CSI变化程度的时间。从而保证第一设备可以通过NDP3对应的CSI3与NDP2对应的CSI2计算得到该CSI变化程度。
在一些实施方式中，上述步骤401和步骤401a可以在上述图1A所示的感知过程的测量阶段、或测量阶段与报告阶段之间的时间间隔中执行。
402、当满足第一条件时，第一设备向第三设备发送第一信息。第一信息用于指示CSI 变化程度超过第一门限值。相应的，当满足第一条件时，第三设备接收来自第一设备的第一信息。
可选的，第一门限值的大小可以是第一设备确定的。具体的，第一设备可以根据第三设备反馈的感知测量结果、环境变化情况等设定第一门限值。例如，感知发起端可以为第一设备指示一个较低的阈值作为初始阈值，在反馈过程中，第一设备可以结合反馈的感知测量结果、环境变化情况等调节该初始阈值，以得到该第一阈值。
下面介绍第一设备、第二设备与第三设备在感知过程中承担的角色的几种可能的实现方式。
1、第二设备与第三设备为同一设备，第一设备为感知接收端，第二设备为感知发送端，同时第二设备还承担感知发起端的角色。具体请参阅图6A所示，第二设备作为感知发起端发起感知会话，并且第二设备作为感知发送端，向第一设备(感知接收端)发送多个NDP。第二设备作为感知发起端触发第一设备反馈CSI变化程度的大小。
2、第一设备为感知接收端，第二设备为感知发送端，第三设备为感知发起端。例如，如图6B所示，第三设备作为感知发起端发起感知会话，第二设备作为感知发送端向第一设备(感知接收端)发送多个NDP。第三设备作为感知发起端触发第一设备反馈CSI变化程度的大小。
3、第一设备为第一感知接收端，第二设备为感知发送端，第三设备为第二感知接收端。例如，如图6C所示，第二设备作为感知发送端向第一设备(第一感知接收端)发送多个NDP。而系统中的另一个感知接收端(第二感知接收端)触发第一设备反馈CSI变化程度的大小。
需要说明的是，上述图6A至图6C是第一设备、第二设备和第三设备的角色关系示意图。对于第一设备、第二设备与第三设备之间的连接关系并不做限定。若第一设备与第二设备之间有直接连接，则第一设备可以与第二设备直接进行通信传输，若第一设备与第二设备之间没有直接连接，则第一设备可以通过中间设备与第二设备进行通信传输。若第一设备与第三设备之间有直接连接，则第一设备可以与第三设备直接进行通信传输。若第一设备与第三设备之间没有直接连接，则第一设备可以通过中间设备与第三设备进行通信传输。
可选的，上述步骤401中，第一条件包括以下任一项：
1、第一设备的多个CSI变化程度中第一CSI变化程度超过第一门限值；
其中，多个CSI变化程度是基于多个NDP对应的CSI确定得到的。具体的确定过程可以参阅前述步骤401a的相关介绍。关于CSI变化程度的计算方式可以参阅前述相关介绍，这里不再赘述。
可选的，第一CSI变化程度有多种可能的实现方式，下面介绍几种可能的实现方式。
方式a：第一CSI变化程度是多个CSI变化程度中最大的CSI变化程度。
例如，如图5A所示，多个CSI变化程度包括两个CSI变化程度，第1个CSI变化程度是感知接收端1通过CSI1与CSI2计算得到的CSI变化程度。第2个CSI变化程度是感知接收端1通过CSI2与CSI3计算得到的CSI变化程度。第1个CSI变化程度大于第2个CSI 变化程度，因此第一CSI变化程度为多个CSI变化程度中的第1个CSI变化程度。
方式b：第一CSI变化程度为第一设备通过第一CSI与第二CSI计算得到的CSI变化程度。
其中，第一CSI为第一设备通过第一NDP确定得到的CSI，第一NDP为第一设备接收到的倒数第Y个NDP，所述Y为大于或等于1的整数。
第二CSI是第一设备通过预指示的NDP确定得到的CSI，或者，第二CSI是第一设备通过第一NDP的前第w个NDP确定得到的CSI，w为大于或等于1的整数。关于第二CSI的相关示例介绍可以参阅前述的介绍，这里不再赘述。
例如，如图5A所示，第一设备为感知接收端1，感知接收端1可以分别测量NDP1、NDP2和NDP3，得到NDP1对应的CSI1、NDP2对应的CSI2以及NDP3对应的CSI3。第一NDP为感知接收端1接收到的倒数第1个NDP，第一NDP为NDP3，因此第一CSI为感知接收端1通过NDP3确定得到的CSI3。预指示的NDP是NDP1，因此第二CSI为感知接收端1通过NDP1确定得到的CSI1。因此第一CSI变化程度为感知接收端1通过CSI1与CSI3计算得到的CSI变化程度。
例如，如图5C所示，第一设备为感知接收端1，感知接收端1接收感知发送端发送的的NDP1、NDP2、NDP3和NDP4。第一NDP是感知接收端1接收到的倒数2个NDP，即第一NDP为NDP3。因此，第一CSI是感知接收端1通过NDP3确定得到的CSI3。w＝1，因此第二CSI是感知接收端1通过NDP3的前第1个NDP(即NDP2)确定得到的CSI2。因此，第一CSI变化程度为感知接收端1通过CSI3与CSI3计算得到的CSI变化程度。
方式c：第一CSI变化程度是第一设备通过第一CSI与CSI集合中的CSI计算得到的CSI变化程度，第一CSI为所述第一设备通过第一NDP确定得到的CSI，第一NDP为第一设备接收到的倒数第Y个NDP，Y为大于或等于1的整数；CSI集合中包括X个CSI，X个CSI是第一设备通过第一NDP的前X个NDP分别确定得到的CSI，X为大于或等于2的整数。
在一些实施方式中，X个CSI中的第j个CSI是第一设备通过第一NDP的前第j个NDP确定得到的，j为大于或等于1且小于或等于X的整数。第一设备通过第一CSI与X个CSI中的第一个CSI计算得到CSI变化程度1，第一设备通过X个CSI的第一个CSI与第二个CSI计算得到CSI变化程度2，第一设备通过X个CSI的第二个CSI与第三个CSI计算得到CSI变化程度3，以此类推，第一设备通过X个CSI的第X-1个CSI与第X个CSI计算得到CSI变化程度X。也就是第一设备可以计算得到X个CSI变化程度(包括CSI变化程度1至CSI变化程度X)。第一设备对该X个CSI变化程度进行平均，并将得到的平均CSI变化程度作为第一CSI变化程度。
例如，如图5C所示，第一设备为感知接收端1，感知接收端1接收感知发送端发送的的NDP1、NDP2、NDP3和NDP4。第一NDP是感知接收端1接收到的倒数第2个NDP，即NDP3。感知接收端1通过NDP1、NDP2、NDP3和NDP4分别可以确定NDP1对应的CSI1、NDP2对应的CSI2、NDP3对应的CSI3和NDP4对应的CSI4。CSI集合包括两个CSI，两个CSI分别为NDP1对应的CSI1以及NDP2对应的CSI2。因此，感知接收端1通过CSI3与CSI2计算得到的CSI变化程度1，通过CSI2与CSI1计算得到CSI变化程度2。然后，感知接收端1将 CSI变化程度1和CSI变化程度2进行平均，得到的平均CSI变化程度作为第一CSI变化程度。
2、多个CSI变化程度中超过第一门限值的CSI变化程度数目与多个CSI变化程度包括的CSI变化程度总数目的比值大于第二门限值。
可选的，第二门限值可以是第一设备设定的。第一设备设定第二门限值时可以参考感知测量结果、无线环境中终端设备的移动情况等。例如，第一设备将第二门限值设置为较大的门限值，代表第一设备需要对一直有较大的CSI变化程度的信道信息进行细致感知，反之，则第二门限值可以设置为较小的门限值。
例如，如图5C所示，第一设备为感知接收端1，感知接收端1接收来自感知发送端的NDP1、NDP2、NDP3和NDP4。感知接收端1通过NDP1、NDP2、NDP3和NDP4分别可以确定NDP1对应的CSI1、NDP2对应的CSI2、NDP3对应的CSI3和NDP4对应的CSI4。感知接收端1通过CSI1与CSI2计算得到CSI变化程度1，通过CSI2与CSI3计算得到CSI变化程度2，以及通过CSI3与CSI4计算得到CSI变化程度4。也就是多个CSI变化程度包括3个CSI变化程度，第二门限值为2/3，如果这3个CSI变化程度中有2个CSI变化程度超过第一门限值，则第一设备向第三设备发送第一信息。
3、多个CSI变化程度中有至少一个CSI变化程度超过第一门限值，或者，多个CSI变化程度中超过第三门限值的CSI变化程度数目占多个CSI变化程度的比值大于第二门限值。
在该方式中，上述步骤401具体包括：当多个CSI变化程度中有至少一个CSI变化程度超过第一门限值，第一设备向第三设备发送第一信息，第一信息用于指示CSI变化程度超过第一门限值；或者，当多个CSI变化程度中超过第三门限值的CSI变化程度数目占多个CSI变化程度的比值超过第二门限值时，第一设备向第三设备发送第一信息，第一信息用于指示CSI变化程度超过第三门限值。
可选的，第一门限值、第二门限值以及第三门限值是第一设备设定的。关于第一门限值以及第二门限值的设定说明请参阅前述相关介绍。
一种可能的实现方式中，第三门限值小于第一门限值，第一门限值较大，CSI变化程度超过第一门限值，则表示CSI变化程度较大。相比于第一门限值，第三门限值可以较小，若多个CSI变化程度中超过第三门限值的CSI变化程度数目占多个CSI变化程度的比值大于第二门限值，则代表CSI变化程度较大，也就是将CSI变化程度与第三门限值对比以及超过第三门限值的CSI变化程度的比例以表征整体的CSI变化程度情况。
例如，多个CSI变化程度包括6个CSI变化程度，若该6个CSI变化程度中有一个CSI变化程度超过第一门限值，则第一设备向第三设备发送第一信息，用于指示CSI变化程度超过第三门限值。
例如，多个CSI变化程度包括6个CSI变化程度，若该6个CSI变化程度中有2个CSI变化程度超过第一门限值。第一设备向第三设备发送第一信息，用于指示CSI变化程度超过第一门限值。第二门限值为2/3，若该6个CSI变化程度中有4个CSI变化程度超过第三门限值，则第一设备向第三设备发送第一信息，用于指示CSI变化程度超过第三门限值。
需要说明的是，可选的，上述步骤402中，第一设备还可以向第三设备反馈CSI变化 程度的结果。例如，CSI变化程度的具体值。
在一些实施方式中，若不满足第一条件，第一设备可以不向第三设备反馈信息；或者，第一设备忽略该多个NDP；或者，第一设备向第三设备反馈第三信息。
针对第一设备向第三设备反馈第三信息的实现方式，可选的，图4所示的实施例还包括步骤403。
403、当不满足第一条件时，第一设备向第三设备发送第二信息。第二信息用于指示CSI变化程度未超过第一门限值。相应的，当不满足第一条件时，第三设备接收来自第一设备的第二信息。
例如，如图5A所示，第一设备为感知接收端2，感知接收端2通过NDP1、NDP2和NDP3，得到两个CSI变化程度。感知接收端2通过该两个CSI变化程度确定不满足第一条件，感知接收端1向感知发送端反馈第二信息，用于指示CSI变化程度未超过第一门限值。
也就是说，如果满足第一条件，第一设备执行步骤402，如果不满足第一条件，则第一设备执行步骤403。
在一些实施方式中，图4所示的实施例还包括步骤404，步骤404可以在步骤402之后执行。
404、第一设备向第三设备发送多个CSI变化程度中最大的CSI变化程度。相应的，第三设备接收来自第一设备的多个CSI变化程度中最大的CSI变化程度。
例如，如图5A所示，第一设备为感知接收端1，第二设备为感知发送端。多个CSI变化程度包括两个CSI变化程度，第1个CSI变化程度是感知接收端1通过CSI1与CSI2计算得到的CSI变化程度。第2个CSI变化程度是感知接收端1通过CSI2与CSI3计算得到的CSI变化程度。第1个CSI变化程度大于第2个CSI变化程度，感知接收端1向感知发送端1发送多个CSI变化程度中的第1个CSI变化程度。
在一些实施方式中，图4所示的实施例还包括步骤405和步骤406。
405、第三设备向第一设备发送反馈触发。相应的，第一设备接收来自第三设备的反馈触发。反馈触发用于触发第一设备反馈感知测量结果。
可选的，感知测量结果包括以下至少一项：CSI的变化量、CSI变化程度超过第一门限值的信息。
例如，如图5A所示，第一设备为感知接收端1，第三设备为感知发送端。感知发送端向感知接收端1发送反馈触发(Feedback Trigger)。反馈触发用于触发感知接收端1反馈感知测量结果。
406、第一设备向第三设备发送感知测量结果。相应的，第三设备接收来自第一设备的感知测量结果。
例如，如图5A所示，第一设备为感知接收端1，第三设备为感知发送端。感知接收端1向感知发送端发送感知测量结果。
在一些实施方式中，上述步骤402至步骤406可以在上述图1A所示的报告阶段执行。
可选的，图4所示的实施例还包括步骤401b。
401b、第一设备接收以下至少一项：第一指示信息、第二指示信息、第三指示信息。
第一指示信息用于指示Y，Y为大于或等于1的整数。第一NDP为第一设备接收到的倒数第Y个NDP。也就是第一指示信息包括时间偏移量，用于指示Y的取值。
例如，如图5C所示，感知接收端1接收到NDP1，感知接收端1通过NDP1确定得到NDP1对应的CSI1。感知接收端1接收到NDP2之后，感知接收端通过NPD2确定得到NDP2对应的CSI2。感知接收端1通过NDP2对应的CSI2与NDP1对应的CSI1计算得到CSI变化程度1的同时，感知接收端1接收到NDP3。也就是说感知接收端1计算该CSI变化程度1相对于该感知接收端1接收到NDP2的时刻偏移了一个NDP的接收时间。也就是上述时间偏移量为1，Y＝2。
例如，如图5B所示，感知接收端1接收到NDP2，感知接收端1通过NDP1确定得到NDP1对应的CSI1。感知接收端1接收到NDP2之后，感知接收端1通过NDP2确定得到NDP2对应的CSI2。感知接收端1通过CSI1与CSI2计算得到CSI变化程度1的同时，感知接收端1接收到NDP3。也就是说感知接收端1计算该CSI变化程度1相对于该感知接收端1接收到NDP1的时刻偏移了两个NDP的接收时间。也就是说上述时间偏移量为2，Y＝3。
第二指示信息用于指示第一设备采用多CSI变化程度场景或单个CSI变化程度场景，和/或，用于指示第一设备采用的多个CSI变化程度计算方式。对于第一设备采用的多个CSI变化程度计算方式可以参阅前述关于多个CSI变化程度的计算方式的相关介绍，这里不再赘述。
其中，多CSI变化程度场景是指第一设备反馈是否满足第一门限值的信息的次数小于第一设备计算得到的CSI变化程度的数目。单CSI变化程度场景是指第一设备针对每个CSI变化程度，都会反馈该CSI变化程度是否满足第一门限值的信息。
例如，如图5A所示，多个CSI变化程度包括两个CSI变化程度，但是感知接收端1只针对该两个CSI变化程度反馈一次CSI变化程度是否超过第一门限值的信息。那么可以称感知接收端1采用多CSI变化程度场景。
第三指示信息用于指示第一设备中参与多个CSI变化程度计算的CSI中第一设备最晚接收到的NDP对应的CSI。
例如，如图5C所示，第一设备为感知接收端1，感知接收端1接收到NDP1、NDP2、NDP3和NDP4。感知接收端1可以通过NDP1、NDP2、NDP3和NDP4分别确定NDP1对应的CSI1、NPD2对应的CSI2、NDP3对应的CSI3和NDP4对应的CSI4。第三指示信息指示NDP3对应的CSI3。那么第一设备可以通过NDP3对应的CSI3与NDP2对应的CSI2计算得到CSI变化程度1，通过NDP2对应的CSI2与NDP1对应的CSI1计算得到CSI变化程度2。也就是第一设备确定得到多个CSI变化程度，具体包括CSI变化程度1和CSI变化程度2。
可选的，步骤401b可以在步骤401之前执行。
具体的，第一设备可以接收来自第二设备或第三设备的以下至少一项：第一指示信息、第二指示信息、第三指示信息。
一种可能的实现方式中，第二设备为感知发送端，感知发送端可以在上述图1A所示的建立阶段或测量阶段发送第一指示信息和第二指示信息。感知发送端可以在上述图1A所示的报告阶段发送第三指示信息。
另一种可能的实现方式中，第三设备为感知发起端，感知发起端可以在上述图1A所示的建立阶段或测量阶段发送第一指示信息和第二指示信息。感知发起端可以在上述图1A所示的报告阶段发送第三指示信息。
可选的，上述第一设备接收来自第二设备或第三设备的第一指示信息和/或第二指示信息可以是在图1A所示的建立阶段或测量阶段执行的，具体本申请不做限定。第一设备接收来自第二设备或第三设备的第三指示信息可以是在图1A所示的报告阶段执行的，具体本申请不做限定。
需要说明的是，可选的，上述图4所示的实施例中，第一设备、第二设备和第三设备之间可以交互各自的多CSI变化程度支持指示。多CSI变化程度支持指示用于指示对应的设备是否支持多CSI变化程度场景。例如，第一设备向第二设备和第三设备发送多CSI变化程度支持指示，以指示第一设备支持多CSI变化程度场景。若第三设备为感知发起端，第三设备可以选择第一设备作为感知接收端，并建立第三设备与第一设备之间的感知会话。
需要说明的是，可选的，第一设备、第二设备和第三设备之间可以交互各自的多CSI变化程度支持指示的过程可以在上述图1A所示的发现阶段中执行，也可以在其他阶段执行，具体本申请不做限定。
可选的，图4所示的实施例还包括步骤401c。步骤401c和步骤401d可以在步骤401之前执行。
401c、第四设备向第一设备发送第一帧。第一帧用于建立感知会话。相应的，第一设备接收来自第四设备的第一帧。
第四设备可以为感知发起端，第一设备为感知接收端。第一帧用于建立一个或多个感知会话。关于第一帧的相关介绍可以参与后文图7的相关介绍，这里不再赘述。
可选的，第二设备、第三设备和第四设备可以是同一设备，也可以是不同设备，具体本申请不做限定。例如，第二设备、第三设备和第四设备为同一设备，该设备既作为感知发送端还作为感知发起端。
401d、第一设备根据第一帧确定感知会话的信息。
具体的，第一设备根据第一帧确定第四设备与第一设备之间建立的感知会话的信息。
步骤401c和步骤401d与图7所示的实施例步骤702和步骤703类似，具体可以参阅图7所示的实施例步骤702和步骤703的相关介绍，这里不再赘述。
需要说明的是，可选的，步骤401c和步骤401d可以在图1A所示的建立阶段执行，或者，在其他阶段执行，具体本申请不做限定。
步骤401c和步骤401d与步骤401b之间没有固定的执行顺序，可以先执行步骤401c和步骤401d，再执行步骤401b；或者，先执行步骤401b，再执行步骤401c和步骤401d；或者，依据情况同时执行步骤401c和步骤401d与步骤401b，具体本申请不做限定。
本申请实施例中，第一设备接收来自第二设备的多个NDP，多个NDP中一个NDP对应一个CSI；当满足第一条件时，第一设备向第三设备发送第一信息，第一信息用于指示CSI变化程度超过第一门限值；第一条件包括以下任一项：第一设备的多个CSI变化程度中第一CSI变化程度超过第一门限值、多个CSI变化程度中超过第一门限值的CSI变化程度数 目占多个CSI变化程度的比值大于第二门限值。该多个CSI变化程度是基于多个NDP对应的CSI确定得到的。由此可知，上述技术方案提供了针对第一设备的多个CSI变化程度，第一设备向第三设备反馈CSI变化程度的方式，当满足第一条件时，第一设备向第三设备发送第一信息，第一信息用于指示CSI变化程度超过第一门限值。从而实现对无线环境的有效感知。
图7为本申请实施例通信方法的另一个实施例示意图。请参阅图7，通信方法包括：
701、感知发起端生成第一帧。
第一帧用于建立一个或多个感知会话。第一帧可以称为感知请求帧、或感知发起帧、或感知建立帧，具体本申请对第一帧的名称不做限定。
在一些实施方式中，第一帧包括至少一个用户字段，一个用户字段可以包括对应的一个感知会话的用户级别的信息。
可选的，第一帧用于建立第一感知会话，第一感知会话是感知发起端与感知接收端或感知发送端之间建立的感知会话。至少一个用户字段包括第一用户字段。第一用户字段包括以下指示一项：关联标识(或未关联标识)、响应端角色指示、用户阈值指示、第一用户信息、第二用户信息。第一用户字段包括第一感知会话的用户级别的信息。
下面介绍第一用户字段包括的内容。
1、关联标识(association identifier，AID)为该感知接收端或该感知发送端的标识，用于标识该第一感知会话。
需要说明的是，这里以关联标识为例进行介绍。实际应用中，第一用户字段也可以包括的是未关联标识(unassociated identifier，UID)，表示未关联用户的识别号。在该实现方式中，第一用户字段的其他部分则包括基于该未关联用户的相关信息。后文以第一用户字段包括该关联标识为例介绍本申请的技术方案。
2、响应端角色指示用于指示该感知接收端的角色或该感知发送的角色。也就是指示感知发起端是与感知发送端之间建立该第一感知会话，还是感知发起端与感知接收端之间建立该第一感知会话。
3、用户阈值指示用于指示第一感知会话的感知过程中所采用的用户级别的阈值。也就是指示第一感知会话的感知过程采用该用户级别的阈值。
例如，下面结合表1介绍用户阈值指示指示的指示值与用户级别的阈值的对应关系。
表1
指示值 用户级别的阈值
1 0.1
2 0.2
… …
10 10
11 不使用基于阈值的感知流程
… …
例如，指示值为0，则用户阈值为0.1，也就是第一感知会话的感知过程采用0.1作为阈值。
例如，指示值为11，指示不使用基于阈值的感知流程。也就是说第一感知会话的感知过程不执行上述图1A所示的报告阶段中的过程A，而执行上述图1A所示的报告阶段中的过程B。需要说明的是，可选的，感知发起端也可以通过在第一用户字段中增加一个指示信息，以指示该第一感知会话不使用基于阈值的感知流程，具体本申请不做限定。
4、第一用户信息是依赖于响应端角色的用户信息。
一种可能的实现方式中，响应端角色是感知接收端，第一用户信息包括感知接收端反馈给感知发起端的反馈类型。例如，感知接收端反馈给感知发起端的反馈类型可以包括以下至少一项：非压缩的CSI、压缩的CSI、NDP、感知测量结果、CSI变化程度的结果。
需要说明的是，如果感知发起端同时作为感知接收端，则第一用户字段可以不存在第一用户信息。
另一种可能的实现方式中，响应端角色是感知发送端，第一用户信息包括以下至少一项：该第一感知会话的感知接收端的信息、NDPA的配置信息。第一感知会话的感知接收端的信息可以包括第一感知会话的感知接收端的标识，以用于感知发送端确定与哪些感知接收端进行感知交互。NDPA的配置信息用于感知发送端发送NDPA。例如，NDPA的配置信息包括发送NPDA的资源，感知发送端可以通过该资源发送NDPA等。
需要说明的是，如果感知发起端同时作为感知发送端，则第一用户字段可以不存在第一用户信息。
5、第二用户信息是依赖于会话类型或测量建立类型的用户信息。
会话类型或测量建立类型包括以下任一种：感知发起端为感知发送端、感知发起端为感知接收端、感知发起端既不是感知发送端也不是感知接收端。
上述第二用户信息是指依赖于会话类型或测量建立类型，感知发送端或感知接收端需要获知的一些额外的信息。
例如，对于第一感知会话，感知发起端为感知接收端，第二用户信息可以包括以下至少一项：感知接收端反馈给感知发送端的反馈类型、触发指示，触发指示用于指示感知发送端是否触发作为感知发起端的感知接收端反馈。感知接收端反馈给感知发起端的反馈类型可以包括以下至少一项：非压缩的CSI、压缩的CSI、NDP、感知测量结果、CSI变化程度的结果。
例如，对于第一感知会话感知发起端既不是感知发送端也不是感知接收端，感知接收端反馈给感知发送端的反馈类型。
需要说明的是，对于第一感知会话，如果感知发起端为感知发送端，第一用户字段中可以不包括第二用户信息。
上述介绍了第一帧用于建立第一感知会话，以及第一用户字段的方案。实际应用中，第一帧还可以用于建立一个或多个感知会话，每个感知会话可以对应有一个用户字段，具体本申请不做限定。上述仅仅是以第一感知会话和第一用户字段为例进行说明，并不属于 对本申请的限定。
上述以第一用户字段介绍了第一帧中的用户字段，对于第一帧中的其他用户字段的格式同样类似，具体此处不再一一介绍。
在一些实施方式中，第一帧还包括公共字段。例如，如图8A所示，第一帧包括公共字段和至少一个用户字段。
其中，公共字段包括以下至少一项：测量建立标识、测量时刻标识、瞬时或延迟反馈指示、感知发送端反馈类型、感知接收端反馈类型、会话类型或测量建立类型、公共阈值指示、阈值可变指示、公共信息。
下面介绍公共字段包括的内容。
1、测量建立标识用于指示一个或多个感知会话的识别号。
该一个或多个感知会话可以共享部分参数，因此公共字段通过上述测量建立标识指示该一个或多个感知会话，以便于该一个或多个感知会话共享该公共字段包括的信息。
例如，如图1A所示，感知发起端在建立阶段建立感知会话。感知发起端可以通过该测量建立标识标记该感知发起端建立的一个或多个感知会话。以便于该一个或多个感知会话共享该公共字段中的信息。
需要说明的是，可选的，该一个或多个感知会话可以包括前述介绍的第一感知会话。也就是说第一感知会话可以共享该公共字段中的信息。
2、测量时刻标识用于指示该一个或多个感知会话中每个感知会话的某个NDP。
测量时刻标识用于指示该一个或多个感知会话中反馈或发送CSI变化程度时所基于的NDP。也就是基于指示的NDP反馈或发送CSI变化程度。
3、瞬时或延迟反馈指示用于指示瞬时反馈或延迟反馈一个或多个感知会话的感知测量结果。
由此可知，感知发起端通过瞬时或延迟反馈指示指示瞬时反馈或延迟反馈一个或多个感知会话的感知测量结果。例如，感知发起端指示延迟反馈一个或多个感知会话的感知测量结果。这样感知接收端可以有足够的时间计算相应的CSI变化程度，以便于感知接收端反馈CSI变化程度是否超过阈值。
4、感知发送端反馈类型包括以下至少一项：非压缩的信道状态信息CSI、压缩的CSI、空数据分组NDP、感知测量结果、CSI变化程度反馈(例如，反馈响应中的met信息或Not met信息)。
5、感知接收端反馈类型包括以下至少一项：非压缩的信道状态信息CSI、压缩的CSI、空数据分组NDP、感知测量结果、CSI变化程度反馈(例如，反馈响应中的met信息或Not met信息)。
6、会话类型或测量建立类型。关于会话类型或测量建立类型请参阅前述相关介绍，这里不再赘述。
7、公共阈值指示用于指示一个或多个感知会话的感知过程所采用的公共阈值。也就是该公共阈值是该一个或多个感知会话的感知过程都采用的阈值，可以称为公共阈值。
公共阈值指示的方式与前述用户阈值指示的指示方式类似，具体可以参阅前述关于用 户阈值指示的相关介绍，这里不再赘述。
需要说明的是，可选的，如果该一个或多个感知会话包括第一感知会话，感知接收端可以忽略该公共阈值，而基于用户级别的阈值进行感知测量。
8、阈值可变指示用于指示一个或多个感知会话的感知过程中采用的阈值是否可变。
9、公共信息是依赖于会话类型或测量建立类型的公共信息。
会话类型或测量建立类型包括以下任一种：感知发起端为感知发送端、感知发起端为感知接收端、感知发起端既不是感知发送端也不是感知接收端。
上述公共信息是指依赖于会话类型或测量建立类型，感知发送端或感知接收端需要获知的一些额外的信息。
例如，对于该一个或多个感知会话，感知发起端为感知接收端，那么第二用户信息可以包括以下至少一项：感知接收端反馈给感知发送端的反馈类型、触发指示，触发指示用于指示感知发送端是否触发作为感知发起端的感知接收端反馈。感知接收端反馈给感知发起端的反馈类型可以包括以下至少一项：非压缩的CSI、压缩的CSI、NDP、感知测量结果、CSI变化程度的结果。
例如，对于该一个或多个感知会话，感知发起端既不是感知发送端也不是感知接收端，感知接收端反馈给感知发送端的反馈类型。
需要说明的是，对于该一个或多个感知会话，如果感知发起端为感知发送端，公共字段不包括公共信息。
需要说明的是，上述图8A至图8C所示的第一帧、用户字段和公共字段的格式仅仅是一种示例。实际应用中，第一帧中的公共字段的部分字段也可以移动至用户字段中，用户字段的部分字段也可以移动至公共字段中，具体本申请不做限定。当第一帧用于建立一个感知会话时，第一帧可以只包括用户字段。
上述步骤701以感知发起端通过第一帧建立一个或多个感知会话以及基于这些感知会话建立感知测量(即基于公共字段中测量建立识别号标识的一个或多个感知会话建立的感知测量)。实际应用中，感知发起端也可以通过多个帧建立该一个或多个感知会话，以及基于该一个或多个感知会话建立感知测量。例如，感知发起端可以先通过一个帧建立该一个或多个感知会话，再通过另外一个帧基于该一个或多个感知会话建立感知测量。或者，感知发起端可以先通过一个帧建立感知测量，再通过另外一个帧基于该感知测量建立一个或多个感知会话，具体本申请不做限定。
702、感知发起端发送第一帧。
感知发起端可以发送第一帧，相应的，感知发送端或感知接收端可以接收第一帧。
703、感知发送端或感知接收端根据第一帧确定第一感知会话的信息。
一种可能的实现方式中，第一感知会话是感知发起端与感知发送端之间建立的感知会话，对于感知发送端来说，感知发送端根据第一帧确定第一感知会话的信息。例如，感知发送端为第一用户字段中关联标识对应的设备。感知发送端可以根据第一帧确定第一感知会话的信息。例如，感知发送端可以从第一用户字段中读取第一感知会话的感知过程中采用的用户级别的阈值、感知接收端的信息以及发送NPDA的资源。
可选的，感知发送端可以根据第一帧确定第一感知会话的信息还包括：感知发送端从第一帧中的公共字段读取第一感知会话的公共信息。例如，感知接收端反馈类型、第一感知会话的会话类型等。
另一种可能的实现方式中，第一感知会话是感知发起端与感知接收端之间建立的感知会话，对于感知接收端来说，若感知接收端为第一用户字段中关联标识对应的设备，感知发送端可以根据第一帧确定第一感知会话的信息。例如，感知接收端可以从第一用户字段中读取感知接收端反馈类型。
可选的，感知发送端可以根据第一帧确定第一感知会话的信息，包括：感知发送端可以从公共字段读取第一感知会话的公共信息。例如，瞬时反馈或延迟反馈第一感知会话的感知测量结果。
需要说明的是，可选的，上述步骤701至步骤703可以感知会话的感知过程的的建立阶段执行，或者在感知会话的感知过程的其他阶段执行，具体本申请不做限定。
可选的，感知发起端可以更新感知会话的感知过程所采用的阈值。具体的更新方式有多种，下面以感知发起端更新第一感知会话的感知过程所采用的阈值为例介绍两种可能的更新方式。
下面结合步骤704和步骤705介绍方式1。可选的，图7所示的实施例还包括步骤704和步骤705。
704、感知发起端发送第一信息。
第一信息用于更新第一感知会话的感知过程中采用的阈值。例如，第一信息包括更新的阈值。
705、感知发送端或感知接收端根据第一信息确定更新后的阈值。
在一些实施方式中，若感知发起端同时还承担感知发送端的角色，感知发起端与感知接收端之间建立第一感知会话。感知发起端向感知接收端发送第一信息，第一信息可以承载于NPDA或反馈请求中。相应的，感知接收端接收感知发起端发送的第一信息，并根据第一信息确定更新后的阈值。
在一些实施方式中，若感知发起端同时还承担感知接收端的角色，感知发起端与感知发送端之间建立第一感知会话。感知发起端向感知发送端发送第一信息。第一信息可以承载于反馈响应或感知反馈中。相应的，感知发送端接收感知发起端发送的第一信息，并根据第一信息确定更新后的阈值。
在一些实施方式中，若感知发起端既不是感知发送端也不是感知接收端，感知发起端与感知接收端之间建立第一感知会话，感知发起端向感知接收端发送第一信息。第一信息可以承载于响应帧中，响应帧用于感知接收端响应感知发起端反馈第一感知会话的感知测量结果。相应的，感知接收端接收感知发起端发送的第一信息，并根据第一信息确定更新后的阈值。
需要说明的是，可选的，上述步骤704和步骤705可以在第一感知会话的感知过程中的测量阶段或报告阶段执行，或者在第一感知会话的感知过程中的其他阶段执行，具体本申请不做限定。
下面结合步骤706至步骤709介绍方式2。可选的，图7所示的实施例还包括步骤706至步骤709。
706、感知发起端发送第一指示信息。
第一指示信息用于指示感知发起将发送更新帧，更新帧用于更新第一感知会话的感知过程中采用的阈值。
具体的，上述步骤706中，感知发起端发送第一指示信息，表示后面跟随发送一个更新帧，用于更新第一感知会话中的信息。例如，第一感知会话的感知过程中采用的阈值。
在一些实施方式中，若感知发起端为感知发送端，第一指示信息可以承载于NDP或反馈请求等。感知发起端向感知接收端发送第一指示信息。相应的，感知接收端接收来自感知发起端的第一指示信息。
在一些实施方式中，若感知发起端为感知接收端，第一指示信息可以承载于反馈响应或感知反馈中。相应的，感知发起端向感知发送端发送第一指示信息，相应的，感知发送端接收来自感知发起端的第一指示信息。
在一些实施方式中，若感知发起端既不是感知发送端也不是感知接收端，则第一信息承载于响应帧中，响应帧用于感知接收端响应感知发起端反馈第一感知会话的感知测量结果。相应的，感知发起端向感知接收端发送第一指示信息，相应的，感知接收端接收来自感知发起端的第一指示信息。
707、感知发送端或感知接收端根据第一信息确定更新后的阈值。
708、感知发起端发送更新帧。
709、感知发送端或感知接收根据更新帧确定更新后的阈值。
需要说明的是，可选的，上述步骤706至步骤709可以在第一感知会话的感知过程中建立阶段、测量阶段或报告阶段执行。或者，上述步骤706至步骤709也可以第一感知会话的感知过程中增加的更新阶段执行。例如，如图9所示，第一感知会话的感知过程新增更新阶段，该更新阶段可以用于感知发起端更新第一感知会话的感知过程中采用的阈值。具体本申请不做限定。图9所示的更新阶段所在的位置进行是一种示例，实际应用中，本身对更新阶段在感知过程中的位置不做限定。例如，更新阶段可以在测量阶段与报告阶段之间，或者，更新阶段也可以在建立阶段与测量阶段之间，具体本申请不做限定。
需要说明的是，可选的，感知发起端也可以不发送第一指示信息，而直接发送更新帧，具体本申请不做限定。需要说明的是，感知发起端为感知接收端时，感知发起端也可以不发送该第一指示信息和更新帧。
可选的，图7所示的实施例还包括步骤701a。步骤701a可以在步骤701之前执行。
701a、感知发起端发送以下至少一项：第二指示信息、第三指示信息、第四指示信息、第五指示信息、第六指示信息。
第二指示信息用于指示感知发起端是否支持基于阈值的感知流程。例如，基于阈值的感知流程可以理解为图1B所示的测量阶段的感知流程。
第三指示信息用于指示感知发起端支持成为感知发起端、感知响应端、感知发送端和/或感知接收端的角色。
具体的，感知发起端通过第三指示信息指示感知发起端支持哪些角色。
例如，第三指示信息为比特图，该比特图包括四个比特，分别对应感知发起端、感知响应端、感知接收端以及感知发送端。例如，比特图为“1101”，代表支持称为感知发起端、感知响应端和感知发送端。例如，第三指示信息包括索引，索引为1时表示仅支持成为感知发起端，索引为2时表示支持成为感知发送端和感知发起端。
第四指示信息用于指示初始阈值。例如，若感知发起端支持基于阈值的感知流程，感知发起端发送第四指示信息，用于指示初始阈值。
第五指示信息用于指示感知会话的感知过程中所采用的阈值是否可变。
第六指示信息用于指示瞬时反馈或延迟反馈感知会话的感知测量结果。
需要说明的是，上述步骤701a中感知发起端以第三指示信息指示该感知发起端能够承担的角色。实际应用中，感知发起端也可以通过第七指示信息指示感知发起端支持成为感知发起端，通过第八指示信息指示感知发起端是否支持成为感知响应端，通过第九指示信息指示感知发起端是否支持成为感知发送端，以及通过第十指示信息指示感知发起端是否支持成为感知接收端。也就是感知发起端通过四个指示信息分别指示其是否支持相应的角色，具体本申请不做限定。
上述步骤701a是以感知发起端为例介绍本申请的技术方案，由于感知发起端是可以发起感知会话的，因此第四指示信息指示初始阈值。而对于不支持成为感知发起端的设备(例如，感知发送端或感知接收端)，该设备可以发送相应的指示信息，指示无初始阈值。即该设备不支持成为感知发起端，没有设置初始阈值的能力。
例如，下面结合表2介绍第四指示信息指示的指示值与初始阈值的对应关系。
表2
指示值 初始阈值
0 0
1 0.1
2 0.2
… …
10 10
11 无初始阈值或不支持初始阈值
… …
例如，第四指示信息包括指示值“1”，则代表初始阈值为0.1。
需要说明的是，可选的，若感知接收端基于多个阈值反馈CSI变化程度，则上述第四指示信息中可以指示多个初始阈值。例如，感知接收端通过多个NDP确定多个CSI变化程度。若多个CSI变化程度有一个CSI变化程度超过阈值1，则感知接收端反馈CSI变化程度超过阈值1。或者，若多个CSI变化程度中有一定比例的CSI变化程度超过阈值2，则感 知接收端反馈CSI变化程度超过阈值2。因此，上述第四指示信息可以指示多个初始阈值，以便于感知接收端反馈CSI变化程度。
需要说明的是，上述步骤701a可以在图1A所示的发现阶段执行，也可以在其他阶段执行，具体本申请不做限定。上述步骤701a是以感知发起端为例介绍感知系统中的设备之间交互信息的过程。在实际应用中，感知系统的不同设备之间可以交互上述步骤701a示出的信息。从而实现感知系统中的设备获知其他设备的能力信息等。
上述图7所示的实施例都是以感知发起端为例介绍本申请的技术方案，实际应用中，也可以由其他设备(例如，感知发送端或感知接收端)执行，具体本申请不做限定。
本申请实施例中，感知发起端可以发起第一帧，第一帧用于建立第一感知会话。由上述第一帧的相关介绍可知，感知发起端的第一帧可以指示第一感知会话的相关信息，例如，第一感知会话的感知过程所采用的用户级别的阈值、设备的角色信息等。由此可知，通过上述技术方案可以实现对感知会话的建立、感知会话的相关信息的发送，以便于感知发送端和感知接收端获取感知会话的相关信息，便于感知过程的执行。
上述介绍了本申请提供的通信方法，本申请还提供了一种通信装置，如图10所示，通信装置1000包括收发单元1001，可选的，通信装置1000还包括处理单元1002。通信装置1000用于实现方式上述图4所示的实施例中第一设备执行的方法。在一些实施方式中，通信装置1000应用于第一设备，第一设备可以是感知接收端，感知接收端可以是AP或STA。
收发单元1001，用于接收来自第二设备的多个NDP，多个NDP中一个NDP对应一个CSI；当满足第一条件时，向第三设备发送第一信息，第一信息用于指示CSI变化程度超过第一门限值；第一条件包括以下任一项：通信装置1000的多个CSI变化程度中第一CSI变化程度超过第一门限值、多个CSI变化程度中超过第一门限值的CSI变化程度数目占多个CSI变化程度的比值大于第二门限值。该多个CSI变化程度是基于多个NDP对应的CSI确定得到的。
一种可能的实现方式中，第二设备与所述第三设备为同一设备，通信装置1000为感知接收端，第二设备为感知发送端。
另一种可能的实现方式中，通信装置1000为第一感知接收端，第二设备为感知发送端，第三设备为感知发起端、或第二感知接收端。
另一种可能的实现方式中，多个CSI变化程度中的一个CSI变化程度是通信装置1000通过至少两个CSI计算得到的CSI变化程度。
另一种可能的实现方式中，处理单元1002，用于通过多个NDP对应的CSI确定多个CSI变化程度。
另一种可能的实现方式中，收发单元1001，用于接收来自第三设备的反馈请求，反馈请求用于触发通信装置1000反馈感知测量结果。
另一种可能的实现方式中，第一CSI变化程度为多个CSI变化程度中最大的CSI变化程度；或者，
第一CSI变化程度为通信装置1000通过第一CSI与第二CSI计算得到的CSI变化程度，第一CSI为通信装置1000通过第一NDP确定得到的CSI，第一NDP为通信装置1000接收 到的倒数第Y个空数据分组NDP，Y为大于或等于1的整数；第二CSI是通信装置1000通过预指示的NDP确定得到的CSI，或者，第二CSI是通信装置1000通过第一NDP的前第w个NDP确定得到的CSI，w为大于或等于1的整数；或者，
第一CSI变化程度是通信装置1000通过第一CSI与CSI集合中的CSI计算得到的CSI变化程度，第一CSI为通信装置1000通过第一NDP确定得到的CSI，第一NDP为通信装置1000接收到的倒数第Y个NDP，Y为大于或等于1的整数；CSI集合中包括X个CSI，X个CSI是通信装置1000通过第一NDP的前X个NDP分别确定得到的CSI，X为大于或等于2的整数。
另一种可能的实现方式中，收发单元1001，还用于向第三设备发送多个CSI变化程度中最大的CSI变化程度。
另一种可能的实现方式中，多个CSI变化程度中的第i个CSI变化程度是通信装置1000通过第i+1个CSI与第i个CSI计算得到的CSI变化程度，第i+1个CSI是通信装置1000通过通信装置1000接收到的第i+1个NDP确定得到的CSI，第i个CSI是通信装置1000通过通信装置1000接收到的第i个NDP确定得到的CSI，i为大于或等于1的整数；或者，
第i个CSI变化程度是通信装置1000通过第i+1个CSI与第二CSI计算得到的CSI变化程度，第二CSI是通信装置1000通过预指示的NDP确定得到的CSI，或者，第二CSI是通信装置1000通过第一NDP的前第w个NDP确定得到的CSI，第一NDP为通信装置1000接收到的倒数第Y个空数据分组NDP，Y为大于或等于1的整数，w为大于或等于1的整数；第i+1个CSI是通信装置1000通过通信装置1000接收到的第i+1个NDP确定得到的CSI，i为大于或等于1的整数；
或者，
第i个CSI变化程度是通信装置1000通过第i+1个CSI与第i-Q个CSI计算得到的CSI变化程度，第i+1个CSI是通信装置1000通过通信装置1000接收到的第i+1个NDP确定得到的CSI，第i-Q个CSI是通信装置1000通过通信装置1000接收到的第i-Q个NDP确定得到的CSI，i为大于或等于1的整数，Q为大于或等于1的整数，i大于Q；
或者，
第i个CSI变化程度是通信装置1000通过第i+1个CSI与所述第i+1个CSI的前Z个CSI计算得到的CSI变化程度，第i+1个CSI是通信装置1000通过通信装置1000接收到的第i+1个NDP确定得到的CSI，所述第i+1个CSI的前Z个CSI是通信装置1000通过通信装置1000接收到第i+1个NDP的前Z个NDP分别确定得到的CSI，i为大于或等于1的整数，Z为大于或等于1的整数。
另一种可能的实现方式中，收发单元1001还用于：
接收来自第二设备或第三设备的第一指示信息，第一指示信息用于指示Y，Y为大于或等于1的整数。
另一种可能的实现方式中，收发单元1001还用于：
当不满足第一条件时，向第三设备发送第二信息，第二信息用于指示CSI变化程度未超过第一门限值。
另一种可能的实现方式中，收发单元1001还用于：
接收来自第二设备或第三设备发送的以下至少一项信息：第二指示信息、第三指示信息；
第二指示信息用于指示通信装置1000采用的多个CSI变化程度计算方式，和/或，用于指示通信装置1000采用多个CSI变化程度场景或单个CSI变化程度场景；第三指示信息用于指示所述通信装置1000中参与多个CSI变化程度计算的CSI中通信装置1000最晚接收到的空数据分组NDP对应的CSI。
本申请还提供了一种通信装置，如图11所示，通信装置1100包括收发单元1101，可选的，通信装置1100还包括处理单元1102。通信装置1100用于实现方式上述图4所示的实施例中第三设备执行的方法。在一些实施方式中，通信装置1100应用于第三设备，第三设备可以是感知发起端、感知发送端或第二感知接收端。
收发单元1101，用于当满足第一条件时，接收来自第一设备的第一信息，第一信息用于指示CSI变化程度超过第一门限值；第一条件包括以下任一项：第一设备的多个CSI变化程度中第一CSI变化程度超过第一门限值、多个CSI变化程度中超过第一门限值的CSI变化程度数目占多个CSI变化程度的比值大于第二门限值，多个CSI变化程度是基于多个NDP对应的CSI确定得到的，多个NDP是第一设备从第二设备接收的，多个NDP中一个NDP对应一个CSI。
一种可能的实现方式中，第二设备与所述通信装置1100为同一设备，第一设备为感知接收端，第二设备为感知发送端。
另一种可能的实现方式中，第一设备为第一感知接收端，第二设备为感知发送端，通信装置1100为感知发起端、或第二感知接收端。
另一种可能的实现方式中，多个CSI变化程度中的一个CSI变化程度是第一设备通过至少两个CSI计算得到的CSI变化程度。
另一种可能的实现方式中，收发单元1101，还用于向第一设备发送反馈请求，反馈请求用于触发第一设备反馈感知测量结果。
另一种可能的实现方式中，第一CSI变化程度为多个CSI变化程度中最大的CSI变化程度；或者，
第一CSI变化程度为第一设备通过第一CSI与第二CSI计算得到的CSI变化程度，第一CSI为第一设备通过第一NDP确定得到的CSI，第一NDP为第一设备接收到的倒数第Y个空数据分组NDP，Y为大于或等于1的整数；第二CSI是第一设备通过预指示的NDP确定得到的CSI，或者，第二CSI是第一设备通过第一NDP的前第w个NDP确定得到的CSI，w为大于或等于1的整数；或者，
第一CSI变化程度是第一设备通过第一CSI与CSI集合中的CSI计算得到的CSI变化程度，第一CSI为第一设备通过第一NDP确定得到的CSI，第一NDP为第一设备接收到的倒数第Y个NDP，Y为大于或等于1的整数；CSI集合中包括X个CSI，X个CSI是第一设备通过第一NDP的前X个NDP分别确定得到的CSI，X为大于或等于2的整数。
另一种可能的实现方式中，收发单元1101还用于：
接收来自第一设备的多个CSI变化程度中最大的CSI变化程度。
另一种可能的实现方式中，多个CSI变化程度中的第i个CSI变化程度是第一设备通过第i+1个CSI与第i个CSI计算得到的CSI变化程度，第i+1个CSI是第一设备通过第一设备接收到的第i+1个NDP确定得到的CSI，第i个CSI是第一设备通过第一设备接收到的第i个NDP确定得到的CSI，i为大于或等于1的整数；
或者，
第i个CSI变化程度是第一设备通过第i+1个CSI与第二CSI计算得到的CSI变化程度，第i+1个CSI是第一设备通过第一设备接收到的第i+1个NDP确定得到的CSI，i为大于或等于1的整数；第二CSI是第一设备通过预指示的NDP确定得到的CSI，或者，第二CSI是第一设备通过第一NDP的前第w个NDP确定得到的CSI，第一NDP为第一设备接收到的倒数第Y个空数据分组NDP，Y为大于或等于1的整数，w为大于或等于1的整数；
或者，
第i个CSI变化程度是第一设备通过第i+1个CSI与第i-Q个CSI计算得到的CSI变化程度，第i+1个CSI是第一设备通过第一设备接收到的第i+1个NDP确定得到的CSI，第i-Q个CSI是第一设备通过第一设备接收到的第i-Q个NDP确定得到的CSI，i为大于或等于1的整数，Q为大于或等于1的整数，i大于Q；
或者，
第i个CSI变化程度是第一设备通过第i+1个CSI与所述第i+1个CSI的前Z个CSI计算得到的CSI变化程度，第i+1个CSI是第一设备通过第一设备接收到的第i+1个NDP确定得到的CSI，所述第i+1个CSI的前Z个CSI是第一设备通过第一设备接收到第i+1个NDP的前Z个NDP分别确定得到的CSI，i为大于或等于1的整数，Z为大于或等于1的整数。
另一种可能的实现方式中，收发单元1101还用于：
向第一设备发送第一指示信息，第一指示信息用于指示Y，Y为大于或等于1的整数。
另一种可能的实现方式中，收发单元1101还用于：
当不满足第一条件时，接收来自第一设备的第二信息，第二信息用于指示CSI变化程度未超过第一门限值。
另一种可能的实现方式中，收发单元1101还用于：
向所述第一设备发送以下至少一项信息：第二指示信息、第三指示信息；
第二指示信息用于指示第一设备采用的多个CSI变化程度计算方式，和/或，用于指示第一设备采用多个CSI变化程度场景或单个CSI变化程度场景；
第三指示信息用于指示所述第一设备中参与多个CSI变化程度计算的CSI中第一设备最晚接收到的空数据分组NDP对应的CSI。
本申请还提供了一种通信装置，如图12所示，通信装置1200包括处理单元1201和收发单元1202。通信装置1200用于实现方式上述图7所示的实施例中感知发起端执行的方法。
处理单元1201，用于生成第一帧，第一帧用于建立第一感知会话；第一帧包括至少一 个用户字段，至少一个用户字段包括第一用户字段，第一用户字段包括以下指示一项：关联标识、响应端角色指示、用户阈值指示、第一用户信息、第二用户信息；第一感知会话为通信装置1200与感知发送端或感知接收端之间建立的感知会话，关联标识为感知发送端或感知接收端的标识，关联标识用于标识第一感知会话，响应端角色指示用于感知发送端的角色或感知接收端的角色；用户阈值指示用于指示第一感知会话的感知过程所采用的用户级别的阈值；第一用户信息是依赖响应端角色的用户信息；第二用户信息是依赖于会话类型或测量建立类型的用户信息；
收发单元1202，用于发送第一帧。
一种可能的实现方式中，会话类型或测量建立类型包括以下任一种：通信装置1200为感知发送端、通信装置1200为感知接收端、通信装置1200既不是感知发送端也不是感知接收端。
另一种可能的实现方式中，第一帧还包括公共字段，公共字段包括以下至少一项：测量建立标识、瞬时或延迟反馈指示、感知发送端反馈类型、感知接收端反馈类型、会话类型或测量建立类型、公共阈值指示、阈值可变指示；
测量建立标识用于指示一个或多个感知会话的识别号；瞬时或延迟反馈指示用于指示瞬时反馈或延迟反馈一个或多个感知会话的感知测量结果；感知发送端反馈类型包括以下至少一项：非压缩的信道状态信息CSI、压缩的CSI、空数据分组NDP、感知测量结果，CSI变化程度的结果；感知接收端反馈类型包括以下至少一项：非压缩的信道状态信息CSI、压缩的CSI、空数据分组NDP、感知测量结果，CSI变化程度的结果；会话类型或测量建立类型包括以下任一种：通信装置1200为感知发送端、通信装置1200为感知接收端、通信装置1200既不是感知发送端也不是感知接收端；公共阈值指示用于指示一个或多个感知会话的感知过程所采用的公共阈值；阈值可变指示用于指示一个或多个感知会话的感知过程中采用的阈值是否可变。
另一种可能的实现方式中，收发单元1202还用于：
发送第一信息；第一信息用于更新第一感知会话的感知过程中采用的阈值。
另一种可能的实现方式中，若通信装置1200还承担感知接收端的角色，第一信息承载于NDPA或反馈请求中；或者，
若通信装置1200还承担感知接收端的角色，第一信息承载于反馈响应中；或者，
若通信装置1200既不是感知发送端也不是感知接收端，则所述第一信息承载于响应帧中，所述响应帧用于通信装置1200响应感知发送端或感知接收端反馈第一感知会话的感知测量结果。
另一种可能的实现方式中，收发单元1202还用于：
发送第一指示信息；第一指示信息用于指示通信装置1200将发送更新帧，更新帧用于更新第一感知会话的感知过程中采用的阈值；
发送更新帧。
另一种可能的实现方式中，收发单元1202还用于：
发送以下至少一项：第二指示信息、第三指示信息、第四指示信息、第五指示信息、 第六指示信息；
第二指示信息用于指示通信装置1200是否支持基于阈值的感知流程；第三指示信息用于指示通信装置1200支持成为感知发起端、感知响应端、感知发送端和/或感知接收端的角色；第四指示信息用于指示初始阈值；第五指示信息用于指示感知会话的感知过程中所采用的阈值是否可变；第六指示信息用于指示瞬时反馈或延迟反馈感知会话的感知测量结果。
本申请还提供了一种通信装置，如图13所示，通信装置1300包括收发单元1301和处理单元1302。通信装置1300用于实现方式上述图7所示的实施例中感知发送端或感知接收端执行的方法。
收发单元1301，用于接收来自感知发起端的第一帧，第一帧用于建立第一感知会话；第一帧包括至少一个用户字段，至少一个用户字段包括第一用户字段，第一用户字段包括以下指示一项：关联标识、响应端角色指示、用户阈值指示、第一用户信息、第二用户信息；第一感知会话为感知发起端与感知发送端或感知接收端之间建立的感知会话，关联标识为感知发送端或感知接收端的标识，关联标识用于标识第一感知会话，响应端角色指示用于感知发送端的角色或感知接收端的角色；用户阈值指示用于指示第一感知会话的感知过程所采用的用户级别的阈值；第一用户信息是依赖响应端角色的用户信息；第二用户信息是依赖于会话类型或测量建立类型的用户信息；
处理单元1302，用于根据第一帧确定第一感知会话的信息。
一种可能的实现方式中，会话类型或测量建立类型包括以下任一种：感知发起端为感知发送端、感知发起端为感知接收端、感知发起端既不是感知发送端也不是感知接收端。
另一种可能的实现方式中，第一帧还包括公共字段，公共字段包括以下至少一项：测量建立标识、瞬时或延迟反馈指示、感知发送端反馈类型、感知接收端反馈类型、会话类型或测量建立类型、公共阈值指示、阈值可变指示；
测量建立标识用于指示一个或多个感知会话的识别号；瞬时或延迟反馈指示用于指示瞬时反馈或延迟反馈一个或多个感知会话的感知测量结果；感知发送端反馈类型包括以下至少一项：非压缩的信道状态信息CSI、压缩的CSI、空数据分组NDP、感知测量结果，CSI变化程度的结果；感知接收端反馈类型包括以下至少一项：非压缩的信道状态信息CSI、压缩的CSI、空数据分组NDP、感知测量结果，CSI变化程度的结果；会话类型或测量建立类型包括以下任一种：感知发起端为感知发送端、感知发起端为感知接收端、感知发起端既不是感知发送端也不是感知接收端；公共阈值指示用于指示一个或多个感知会话的感知过程所采用的公共阈值；阈值可变指示用于指示一个或多个感知会话的感知过程中采用的阈值是否可变。
另一种可能的实现方式中，收发单元1301还用于：
接收来自感知发起端第一信息，第一信息用于更新第一感知会话的感知过程中采用的阈值；
处理单元1302还用于：
根据第一信息确定更新后的阈值。
另一种可能的实现方式中，若感知发起端还承担感知接收端的角色，第一信息承载于NDPA或反馈请求中；或者，
若感知发起端还承担感知接收端的角色，第一信息承载于反馈响应中；或者，
若感知发起端既不是感知发送端也不是感知接收端，则第一信息承载于响应帧中，响应帧用于感知发起端响应感知发送端或感知接收端反馈第一感知会话的感知测量结果。
另一种可能的实现方式中，收发单元1301还用于：
接收来自感知发起端的第一指示信息，第一指示信息用于指示感知发起将发送更新帧，更新帧用于更新第一感知会话的感知过程中采用的阈值；
处理单元1302还用于：
根据第一指示信息确定感知发起端将发送更新帧；
收发单元1301还用于：
接收来自感知发起端的更新帧；
处理单元1302还用于：
根据更新帧确定更新后的阈值。
另一种可能的实现方式中，收发单元1301还用于：
接收来自感知发起端的以下至少一项：第二指示信息、第三指示信息、第四指示信息、第五指示信息、第六指示信息；
第二指示信息用于指示感知发起端是否支持基于阈值的感知流程；第三指示信息用于指示感知发起端支持成为感知发起端、感知响应端、感知发送端和/或感知接收端的角色；第四指示信息用于指示初始阈值；第五指示信息用于指示感知会话的感知过程中所采用的阈值是否可变；第六指示信息用于指示瞬时反馈或延迟反馈感知会话的感知测量结果。
需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
基于与上述通信方法的同一技术构思，如图14所示，本申请实施例还提供了一种通信装置1400的结构示意图。通信装置1400可用于实现上述方法实施例中描述的方法。
所述通信装置1400包括一个或多个处理器1401。所述处理器1401可以是通用处理器或者专用处理器等。例如可以是基带处理器、或中央处理器。基带处理器可以用于对通信 协议以及通信数据进行处理，中央处理器可以用于对通信装置(如，基站、终端、或芯片等)进行控制，执行软件程序，处理软件程序的数据。所述通信装置可以包括收发单元，用以实现信号的输入(接收)和输出(发送)。例如，所述收发单元可以为收发器，射频芯片等。
所述通信装置1400包括一个或多个所述处理器1401，所述一个或多个处理器1401可实现上述所示的实施例中描述的方法。
可选的，处理器1401除了实现上述所示的实施例的方法，还可以实现其他功能。
可选的，一种设计中，处理器1401可以执行指令，使得所述通信装置1400执行上述方法实施例中描述的方法。所述指令可以全部或部分存储在所述处理器内，如指令1403，也可以全部或部分存储在与所述处理器耦合的存储器1402中，如指令1404，也可以通过指令1403和1404共同使得通信装置1400执行上述方法实施例中描述的方法。
在又一种可能的设计中，通信装置1400也可以包括逻辑电路，所述逻辑电路可以实现前述方法实施例中描述的方法。
在又一种可能的设计中所述通信装置1400中可以包括一个或多个存储器1402，其上存有指令1404，所述指令可在所述处理器上被运行，使得所述通信装置1400执行上述方法实施例中描述的方法。可选的，所述存储器中还可以存储有数据。可选的处理器中也可以存储指令和/或数据。例如，所述一个或多个存储器1402可以存储上述实施例中所描述的对应关系，或者上述实施例中所涉及的相关的参数或表格等。所述处理器和存储器可以单独设置，也可以集成在一起。
在又一种可能的设计中，所述通信装置1400还可以包括收发器1405以及天线1406。所述处理器1401可以称为处理单元，对装置(终端或者基站)进行控制。所述收发器1405可以称为收发机、收发电路、输入输出接口电路或者收发单元等，用于通过天线1406实现装置的收发功能。
应注意，本申请实施例中的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only  Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供一种计算机可读介质，其上存储有计算机程序，该计算机程序被计算机执行时实现上述方法实施例描述的方法。
本申请实施例还提供一种计算机程序产品，该计算机程序产品被计算机执行时实现上述方法实施例描述的方法。
本申请实施例还提供一种通信系统，所述通信系统包括第一设备、第二设备和第三设备。所述第一设备可以实现上述图4所示的实施例中第一设备执行的步骤，第二设备可以实现上述图4所示的实施例中第二设备执行的步骤，第三设备可以实现上述图4所示的实施例中第三设备执行的步骤。可选的，通信系统还包括第四设备，第四设备用于执行上述图4所示的实施例第四设备执行的步骤；或者，通信系统包括感知发起端和感知发送端，或者，感知发起端和感知接收端。感知发起端用于执行上述图7所示的实施例中感知发起端执行的步骤。感知发送端用于执行上述图7所示的实施例中感知发送端执行的步骤，感知接收端用于执行上述图7所示的实施例中感知接收端执行的步骤。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(Digital Subscriber Line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(Digital Video Disc，DVD))、或者半导体介质(例如，固态硬盘(Solid State Disk，SSD))等。
本申请实施例还提供了一种处理装置，包括处理器和接口；所述处理器，用于执行上述方法实施例描述的方法。
应理解，上述处理装置可以是一个芯片，所述处理器可以通过硬件来实现也可以通过软件来实现，当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当通过软件来实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现，改存储器可以集成在处理器中，可以位于所述处理器之外，独立存在。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另外，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或通信连接，也可以是电的，机械的或其它的形式连接。
作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本申请实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到本申请可以用硬件实现，或固件实现，或它们的组合方式来实现。当使用软件实现时，可以将上述功能存储在计算机可读介质中或作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是计算机能够存取的任何可用介质。以此为例但不限于：计算机可读介质可以包括RAM、ROM、EEPROM、CD-ROM或其他光盘存储、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质。此外。任何连接可以适当的成为计算机可读介质。例如，如果软件是使用同轴电缆、光纤光缆、双绞线、数字用户线(DSL)或者诸如红外线、无线电和微波之类的无线技术从网站、服务器或者其他远程源传输的，那么同轴电缆、光纤光缆、双绞线、DSL或者诸如红外线、无线和微波之类的无线技术包括在所属介质的定影中。如本申请所使用的，盘(Disk)和碟(disc)包括压缩光碟(CD)、激光碟、光碟、数字通用光碟(DVD)、软盘和蓝光光碟，其中盘通常磁性的复制数据，而 碟则用激光来光学的复制数据。上面的组合也应当包括在计算机可读介质的保护范围之内。

Claims (28)

  1. 一种通信方法，其特征在于，所述方法包括：
    第一设备接收来自第二设备的多个空数据分组NDP，所述多个NDP中一个NDP对应一个信道状态信息CSI；
    当满足第一条件时，所述第一设备向第三设备发送第一信息，所述第一信息用于指示CSI变化程度超过第一门限值；
    所述第一条件包括以下任一项：所述第一设备的多个CSI变化程度中第一CSI变化程度超过所述第一门限值、所述多个CSI变化程度中超过所述第一门限值的CSI变化程度数目占所述多个CSI变化程度的比值大于第二门限值；所述多个CSI变化程度是基于所述多个NDP对应的CSI确定得到的。
  2. 根据权利要求1所述的方法，其特征在于，所述第二设备与所述第三设备为同一设备，所述第一设备为感知接收端，所述第二设备为感知发送端。
  3. 根据权利要求1所述的方法，其特征在于，所述第一设备为第一感知接收端，所述第二设备为感知发送端，所述第三设备为感知发起端或第二感知接收端。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述多个CSI变化程度中的一个CSI变化程度是所述第一设备通过至少两个CSI计算得到的CSI变化程度。
  5. 根据权利要求1至4中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一设备通过所述多个NDP对应的CSI确定所述多个CSI变化程度。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一设备接收来自所述第三设备的反馈请求，所述反馈请求用于触发所述第一设备反馈感知测量结果。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，所述第一CSI变化程度为所述多个CSI变化程度中最大的CSI变化程度；或者，
    所述第一CSI变化程度为所述第一设备通过第一CSI与第二CSI计算得到的CSI变化程度，所述第一CSI为所述第一设备通过第一空数据分组NDP确定得到的CSI，所述第一NDP为所述第一设备接收到的倒数第Y个空数据分组NDP，所述Y为大于或等于1的整数；所述第二CSI是所述第一设备通过预指示的NDP确定得到的CSI，或者，所述第二CSI是所述第一设备通过所述第一NDP的前第w个NDP确定得到的CSI，所述w为大于或等于1的整数；或者，
    所述第一CSI变化程度是所述第一设备通过所述第一CSI与CSI集合中的CSI计算得到的CSI变化程度，所述第一CSI为所述第一设备通过所述第一NDP确定得到的CSI，所述第一NDP为所述第一设备接收到的倒数第Y个空数据分组NDP，所述Y为大于或等于1的整数；所述CSI集合中包括X个CSI，所述X个CSI是所述第一设备通过所述第一NDP的前X个NDP分别确定得到的CSI，所述X为大于或等于2的整数。
  8. 根据权利要求7所述的方法，其特征在于，所述方法还包括：
    所述第一设备接收来自所述第二设备或所述第三设备的第一指示信息，所述第一指示信息用于指示所述Y。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一设备向所述第三设备发送所述多个CSI变化程度中最大的CSI变化程度。
  10. 根据权利要求1至9中任一项所述的方法，其特征在于，
    所述多个CSI变化程度中的第i个CSI变化程度是所述第一设备通过第i+1个CSI与第i个CSI计算得到的CSI变化程度，所述第i+1个CSI是所述第一设备通过所述第一设备接收到的第i+1个NDP确定得到的CSI，所述第i个CSI是所述第一设备通过所述第一设备接收到的第i个NDP确定得到的CSI，所述i为大于或等于1的整数；
    或者，
    所述第i个CSI变化程度是所述第一设备通过所述第i+1个CSI与第二CSI计算得到的CSI变化程度，所述第i+1个CSI是所述第一设备通过所述第一设备接收到的第i+1个NDP确定得到的CSI，所述i为大于或等于1的整数；所述第二CSI是所述第一设备通过预指示的NDP确定得到的CSI，或者，所述第二CSI是所述第一设备通过第一空数据分组NDP的前第w个NDP确定得到的CSI，所述第一NDP为所述第一设备接收到的倒数第Y个NDP，所述Y为大于或等于1的整数，所述w为大于或等于1的整数；
    或者，
    所述第i个CSI变化程度是所述第一设备通过所述第i+1个CSI与第i-Q个CSI计算得到的CSI变化程度，所述第i+1个CSI是所述第一设备通过所述第一设备接收到的第i+1个NDP确定得到的CSI，所述第i-Q个CSI是所述第一设备通过所述第一设备接收到的第i-Q个NDP确定得到的CSI，所述i为大于或等于1的整数，所述Q为大于或等于1的整数，所述i大于所述Q；
    或者，
    所述第i个CSI变化程度是所述第一设备通过所述第i+1个CSI与所述第i+1个CSI的前Z个CSI计算得到的CSI变化程度，所述第i+1个CSI是所述第一设备通过所述第一设备接收到的第i+1个NDP确定得到的CSI，所述第i+1个CSI的前Z个CSI是所述第一设备通过所述第一设备接收到所述第i+1个NDP的前Z个NDP分别确定得到的CSI，所述i为大于或等于1的整数，所述Z为大于或等于1的整数。
  11. 根据权利要求1至10中任一项所述的方法，其特征在于，所述方法还包括：
    当不满足所述第一条件时，所述第一设备向所述第三设备发送第二信息，所述第二信息用于指示CSI变化程度未超过所述第一门限值。
  12. 一种通信方法，其特征在于，所述方法包括：
    当满足第一条件时，第三设备接收来自第一设备的第一信息，所述第一信息用于指示信道状态信息CSI变化程度超过第一门限值；
    所述第一条件包括以下任一项：所述第一设备的多个CSI变化程度中第一CSI变化程度超过所述第一门限值、所述多个CSI变化程度中超过所述第一门限值的CSI变化程度数目占所述多个CSI变化程度的比值大于第二门限值；
    所述多个CSI变化程度是基于多个空数据分组NDP对应的信道状态信息CSI确定得到的，所述多个NDP是所述第一设备从第二设备接收的，所述多个NDP中一个NDP对应一个 CSI。
  13. 根据权利要求12所述的方法，其特征在于，所述第二设备与所述第三设备为同一设备，所述第一设备为感知接收端，所述第二设备为感知发送端。
  14. 根据权利要求12所述的方法，其特征在于，所述第一设备为第一感知接收端，所述第二设备为感知发送端，所述第三设备为感知发起端或第二感知接收端。
  15. 根据权利要求12至14中任一项所述的方法，其特征在于，所述多个CSI变化程度是中的一个CSI变化程度是所述第一设备通过至少两个CSI计算得到的CSI变化程度。
  16. 根据权利要求12至15中任一项所述的方法，其特征在于，所述方法还包括：
    所述第三设备向所述第一设备发送反馈请求，所述反馈请求用于触发所述第一设备反馈感知测量结果。
  17. 根据权利要求12至16中任一项所述的方法，其特征在于，所述多个CSI变化程度中的一个CSI变化程度是所述第一设备通过至少两个CSI计算得到的CSI变化程度。
  18. 根据权利要求12至17中任一项所述的方法，其特征在于，所述第一CSI变化程度为所述多个CSI变化程度中最大的CSI变化程度；或者，
    所述第一CSI变化程度为所述第一设备通过第一CSI与第二CSI计算得到的CSI变化程度，所述第一CSI为所述第一设备通过第一空数据分组NDP确定得到的CSI，所述第一NDP为所述第一设备接收到的倒数第Y个空数据分组NDP，所述Y为大于或等于1的整数；所述第二CSI是所述第一设备通过预指示的NDP确定得到的CSI，或者，所述第二CSI是所述第一设备通过所述第一NDP的前第w个NDP确定得到的CSI，所述w为大于或等于1的整数；或者，
    所述第一CSI变化程度是所述第一设备所述第一CSI与CSI集合中的CSI计算得到的CSI变化程度，所述第一CSI为所述第一设备通过第一空数据分组NDP确定得到的CSI，所述第一NDP为所述第一设备接收到的倒数第Y个空数据分组NDP，所述Y为大于或等于1的整数；所述CSI集合中包括X个CSI，所述X个CSI是所述第一设备通过所述第一NDP的前X个NDP分别确定得到的CSI，所述X为大于或等于2的整数。
  19. 根据权利要求18所述的方法，其特征在于，所述方法还包括：
    所述第三设备向所述第一设备发送第一指示信息，所述第一指示信息用于指示所述Y。
  20. 根据权利要求12至19中任一项所述的方法，其特征在于，所述方法还包括：
    所述第三设备接收来自所述第一设备的所述多个CSI变化程度中最大的CSI变化程度。
  21. 根据权利要求12至20中任一项所述的方法，其特征在于，所述多个CSI变化程度中的第i个CSI变化程度是所述第一设备通过第i+1个CSI与第i个CSI计算得到的CSI变化程度，所述第i+1个CSI是所述第一设备通过所述第一设备接收到的第i+1个NDP确定得到的CSI，所述第i个CSI是所述第一设备通过所述第一设备接收到的第i个NDP确定得到的CSI，所述i为大于或等于1的整数；
    或者，
    所述第i个CSI变化程度是所述第一设备通过所述第i+1个CSI与第二CSI计算得到的CSI变化程度，所述第i+1个CSI是所述第一设备通过所述第一设备接收到的第i+1个 NDP确定得到的CSI，所述第二CSI是所述第一设备通过预指示的NDP确定得到的CSI，所述i为大于或等于1的整数；
    或者，
    所述第i个CSI变化程度是所述第一设备通过所述第i+1个CSI与第i-Q个CSI计算得到的CSI变化程度，所述第i+1个CSI是所述第一设备通过所述第一设备接收到的第i+1个NDP确定得到的CSI，所述第i-Q个CSI是所述第一设备通过所述第一设备接收到的第i-Q个NDP确定得到的CSI，所述i为大于或等于1的整数，所述Q为大于或等于1的整数，所述i大于所述Q；
    或者，
    所述第i个CSI变化程度是所述第一设备通过所述第i+1个CSI与所述第i+1个CSI的前Z个CSI计算得到的CSI变化程度，所述第i+1个CSI是所述第一设备通过所述第一设备接收到的第i+1个NDP确定得到的CSI，所述第i+1个CSI的前Z个CSI是所述第一设备通过所述第一设备接收到所述第i+1个NDP的前Z个NDP分别确定得到的CSI，所述i为大于或等于1的整数，所述Z为大于或等于1的整数。
  22. 根据权利要求12至21中任一项所述的方法，其特征在于，所述方法还包括：
    当不满足所述第一条件时，所述第三设备接收来自所述第一设备的第二信息，所述第二信息用于指示CSI变化程度未超过所述第一门限值。
  23. 一种通信装置，其特征在于，包括用于执行如权利要求1至11或如权利要求12至22中任一项方法的单元。
  24. 一种通信装置，其特征在于，所述通信装置包括：处理器和存储器，所述处理器与所述存储器耦合；
    所述存储器存储有计算机程序；
    所述处理器，用于执行所述存储器中存储的计算机程序，以使得所述通信装置执行如权利要求1至11中任一项所述的方法，或以使得所述通信装置执行如权利要求12至22中任一项所述的方法。
  25. 一种通信装置，其特征在于，所述通信装置包括：处理器和接口电路；
    所述接口电路，用于与所述通信装置之外的模块通信；
    所述处理器用于执行计算机程序或指令，以使所述通信装置执行如权利要求1至11中任一项所述的方法，或者，以使所述通信装置执行如权利要求12至22中任一项所述的方法。
  26. 根据权利要求25所述的通信装置，其特征在于，所述通信装置为芯片或芯片系统。
  27. 一种计算机可读存储介质，其特征在于，包括计算机程序或指令，当其在计算机上运行时，使得权利要求1至11中任意一项所述的方法被执行，或者，使得权利要求12至22中任一项所述的方法被执行。
  28. 一种计算机程序产品，其特征在于，当其在计算机上运行时，使得权利要求1至11中任意一项所述的方法被执行，或者，使得权利要求12至22中任一项所述的方法被执行。
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