Method and apparatus for ultra-wideband based sensing measurement feedback

Abstract

The method and apparatus for feeding back sensing measurement results based on UWB may be applied to a UWB-based WPAN system, such as 802.15.4a protocol, 802.15.4z protocol, or 802.15.4ab protocol in the 802.15 series of protocols, or may be applied to a wireless local area network system, sensing system, etc. in the 802.11 series of protocols, such as the next generation Wi-Fi protocol of IEEE 802.11ax, such as 802.11be, Wi-Fi 7, or EHT, and the next generation protocol of 802.11be, such as Wi-Fi 8. The method includes a transmitter transmitting control information, and a receiver receiving the control information accordingly. Then, the receiver transmits feedback information, and the transmitter receives the feedback information accordingly. According to the technical solution provided in this application, the signaling overhead can be significantly reduced.

Description

[Technical Field]

[0001] The present application relates to the field of communication technology, and in particular to a method and apparatus for feedback of sensing measurements based on ultra-wideband. [Background technology]

[0002] Ultra wideband (UWB) is a radio carrier communication technology that can transmit data using narrow, non-sinusoidal impulses at the nanosecond level. Therefore, UWB occupies a wide spectrum range. Due to UWB's narrow pulses and low radiation spectral density, UWB has advantages such as strong multipath resolution, low power consumption, and high secrecy.

[0003] Based on the characteristics of UWB, UWB pulses can be used for sensing. In sensing applications, information related to a target, such as distance, angle, or velocity, can be extracted by detecting echoes of UWB signals to the target. In a sensing application scenario, a sensing initiator is a transmitter of a UWB signal, and a sensing responder is a receiver of the UWB echo signal. When the sensing initiator needs to obtain sensing measurement results, the sensing responder needs to feed back the sensing measurement results to the sensing initiator. For example, the sensing responder may feed back all sensing measurement results to the sensing initiator.

[0004] However, the signaling overhead of the above feedback scheme can be further reduced. Summary of the Invention

[0005] This application provides a method for feeding back sensing measurement results based on UWB, so as to effectively reduce signaling overhead.

[0006] According to a first aspect, an embodiment of the present application provides a method for feeding back sensing measurements based on ultra-wideband, the method comprising: Transmitting control information including first control information, the first control information instructing feedback of the sensing measurement result in a threshold-based feedback manner; A channel impulse response (channel impulse response) obtained by processing the sensing measurement result based on the first control information. Impulse receiving feedback information including (CIR, response, CIR) parameter information; Includes:

[0007] According to a second aspect, an embodiment of the present application provides a method for feeding back sensing measurement results based on ultra-wideband, the method comprising: receiving control information including first control information, the first control information instructing feedback of the sensing measurement result in a threshold-based feedback manner; transmitting feedback information including channel impulse response (CIR) parameter information obtained by processing the sensing measurement result based on the first control information; Includes:

[0008] In an embodiment of the present application, the transmitter transmits control information to the receiver, thereby allowing the receiver to process the original CIR parameter based on the control information, for example, to obtain the CIR parameter information using a threshold-based feedback method. In other words, the CIR parameter information is obtained using a threshold-based feedback method. The sensing measurement results are processed (for example, processed using a threshold-based feedback method) to obtain the CIR parameter information, and then the CIR parameter information is fed back, effectively reducing signaling overhead. In addition, the receiver performs processing based on the control information transmitted by the transmitter, and then transmits feedback information. This improves the UWB pulse-based sensing procedure and ensures communication efficiency for both communication parties.

[0009] With reference to the first aspect or the second aspect, in a possible implementation, the first control information includes information regarding a first threshold value, and the first threshold value is used to determine whether to feed back sensing measurement results in one or more non-reference sampling units based on sensing measurement results in the reference sampling unit.

[0010] With reference to the first or second aspect, in a possible implementation, a first threshold is used to determine whether to feed back one or more groups of sensing measurement results in each of one or more non-reference sampling units based on sensing measurement results in the reference sampling unit.

[0011] With reference to the first or second aspect, in a possible implementation the value of the first threshold is directly proportional to the radar cross section (RCS) of the target.

[0012] In an embodiment of the present application, the value of the first threshold is updated based on the RCS of the target without affecting the transmitter's acquisition of target-related information. This effectively reduces the signaling overhead of CIR parameter information. For example, if the transmitter does not acquire the target's RCS, the value of the first threshold may be set to a small value, such as a low threshold or a lower threshold, thereby allowing the receiver to feedback sensing measurement results more comprehensively and in detail. If the transmitter finds, based on the acquired sensing measurement results, that the target's RCS is greater than a certain threshold, the first threshold may be set to a large value, such as a value greater than the low threshold or a lower threshold. Because the value of the first threshold is larger, sensing measurement results of some non-reference sampling units may not need to be fed back. This effectively reduces the signaling overhead of CIR parameter information. Accordingly, after the transmitter receives feedback information, even if sensing measurement results of some non-reference sampling units have not been fed back, the transmitter can still use the sensing measurement results of the reference sampling unit as the sensing measurement results of the non-reference sampling units that have not been fed back.

[0013] With reference to the first or second aspect, in a possible implementation, the first control information further includes information regarding a compression mode, and the compression mode includes any one of the following: no compression, a compression mode using a fixed amount of sampling points as a unit (a compression mode using a fixed amount of taps as a unit), and a compression mode using a variable amount of sampling points as a unit (a compression mode using a variable amount of taps as a unit).

[0014] For example, no compression means that the sensing measurement result is directly fed back by using the taps obtained by sampling and does not need to be determined based on the first threshold. The compression mode using a fixed amount of taps as a unit or the compression mode using a variable amount of taps as a unit means that one or more taps obtained by sampling can be classified into one group, and then whether to feed back the sensing measurement result for each group is determined based on the first threshold.

[0015] In the embodiment of the present application, in the compressed mode using a fixed amount of sampling points as a unit, the method is easy to implement, and the transmitter is not affected when acquiring information related to the target, which can effectively reduce the signaling overhead of the CIR parameter. In the compressed mode using a variable amount of sampling points as a unit, the receiver has more freedom to perform compression processing, and the transmitter is not affected when acquiring information related to the target, which can effectively reduce the signaling overhead of the CIR parameter.

[0016] With reference to the first or second aspect, in a possible implementation, the first control information further includes address information of a communication device that receives the control information.

[0017] In an embodiment of the present application, the first control information includes address information of one or more receivers, so that each receiver can clearly know the control information, and each receiver processes the sensing measurement results according to the control information to feed back the sensing measurement results obtained by each receiver, which effectively improves communication efficiency.

[0018] With reference to the first or second aspect, in a possible implementation, the feedback information further includes information related to the CIR parameter information, where the information related to the CIR parameter information includes at least one of the following: the number of sampling units corresponding to the CIR parameter information, the number of sampling points included in each sampling unit, the number of antennas used to measure the sensing measurement results, and information indicating whether the sensing measurement results in the reference sampling unit are stored.

[0019] In the embodiment of the present application, the feedback information includes the above information, so that the transmitter can clearly know how to parse the CIR parameter information, which improves the communication efficiency of both communication parties.

[0020] With reference to the first or second aspect, in a possible implementation, when the compression mode includes a compression mode using a variable amount of sampling points as a unit, the feedback information further includes the following information: the number of groups in one sampling unit, and the start sampling point and the end sampling point in each group. Alternatively, the feedback information further includes the following information: the number of groups in one sampling unit, the start sampling point in each group, and the number of sampling points.

[0021] In the embodiment of the present application, the feedback information includes the above information, so that when obtaining the feedback information, the transmitter can clearly know the grouping information of the sensing measurement results of the receiver, so as to immediately restore the original CIR parameters.

[0022] With reference to the first or second aspect, in a possible implementation, the feedback information further includes information regarding a first bitmap, and each bit in the first bitmap indicates whether the sensing measurement result should be fed back in the corresponding group.

[0023] With reference to the first or second aspect, in a possible implementation, the CIR parameter information includes at least one of the following information: path loss, delay, azimuth angle of arrival (AOA), or zenith angle of arrival (ZOA).

[0024] With reference to the first or second aspect, in a possible implementation, the feedback information further includes a data mode including path loss information, and the data mode includes at least one of a data mode based on amplitude and phase, or a data mode based on in-phase and quadrature components.

[0025] In the embodiment of the present application, a data mode is used to indicate path loss information, so that the form of path loss information is more diversified, and different feedback forms of sensing information can be effectively selected for different application scenarios. For example, when the bit width (i.e., occupied bit length) of the path loss information is small, the accuracy of feedback based on amplitude and phase is higher.

[0026] With reference to the second aspect, in a possible implementation, the method comprises: Grouping the sensing measurement results by a fixed amount of sampling points or a variable amount of sampling points to obtain one or more sensing measurement result groups; The method further includes determining not to feed back the sensing measurement results in the group when the difference between the sensing measurement results in the group and the sensing measurement results with the same delay in the reference sampling unit is less than or equal to a first threshold, or determining to feed back the sensing measurement results in the group when the difference between the sensing measurement results in the group and the sensing measurement results with the same delay in the reference sampling unit is greater than the first threshold, and feeding back the sensing measurement results in the group by using the difference.

[0027] According to a third aspect, an embodiment of the present application provides a communication device configured to perform a method according to the first aspect or any one of the possible implementations of the first aspect, the communication device comprising a unit for performing the method according to the first aspect or any one of the possible implementations of the first aspect.

[0028] According to a fourth aspect, an embodiment of the present application provides a communication device configured to perform the method according to the second aspect or any one of the possible implementations of the second aspect, the communication device comprising a unit for performing the method according to the second aspect or any one of the possible implementations of the second aspect.

[0029] In the third or fourth aspect, the communication device may include a transceiver unit and a processing unit. For a specific description of the transceiver unit and the processing unit, please refer to the device embodiments provided below.

[0030] According to a fifth aspect, an embodiment of the present application provides a communications device. The communications device includes a processor configured to execute a method according to the first aspect or any one of its possible implementations. Alternatively, the processor is configured to execute a program stored in a memory. When the program is executed, the method according to the first aspect or any one of its possible implementations is performed.

[0031] In a possible implementation, the memory is located external to the communication device.

[0032] In a possible implementation, the memory is located in the communication device.

[0033] In this embodiment of the present application, the processor and the memory may alternatively be incorporated into one device, in other words, the processor and the memory may alternatively be integrated.

[0034] In a possible implementation, the communication device further comprises a transceiver, the transceiver being configured to receive signals or to transmit signals.

[0035] According to a sixth aspect, an embodiment of the present application provides a communications device. The communications device includes a processor configured to execute a method according to the second aspect or any one of its possible implementations. Alternatively, the processor is configured to execute a program stored in a memory. When the program is executed, the method according to the second aspect or any one of its possible implementations is performed.

[0036] In a possible implementation, the memory is located external to the communication device.

[0037] In a possible implementation, the memory is located in the communication device.

[0038] In this embodiment of the present application, the processor and the memory may alternatively be incorporated into one device, in other words, the processor and the memory may alternatively be integrated.

[0039] In a possible implementation, the communication device further comprises a transceiver, the transceiver being configured to receive signals or to transmit signals.

[0040] According to a seventh aspect, an embodiment of the present application provides a communication device, the communication device including a logic circuit and an interface, the logic circuit coupled to the interface, the logic circuit configured to output control information and input feedback information through the interface.

[0041] It may be appreciated that the logic circuitry is further configured to perform processing based on the feedback information to obtain target-related information, such as information about velocity, angle, or attenuation.

[0042] According to an eighth aspect, an embodiment of the present application provides a communication device, the communication device including a logic circuit and an interface, the logic circuit coupled to the interface, the logic circuit configured to input control information and output feedback information through the interface.

[0043] It may be appreciated that the logic circuitry is further configured to determine the feedback information based on the control information.

[0044] According to a ninth aspect, an embodiment of the present application provides a computer-readable storage medium configured to store a computer program which, when run on a computer, performs the method according to the first aspect or any one of the possible implementations of the first aspect.

[0045] According to a tenth aspect, an embodiment of the present application provides a computer-readable storage medium configured to store a computer program which, when run on a computer, performs a method according to the second aspect or any one of the possible implementations of the second aspect.

[0046] According to an eleventh aspect, an embodiment of the present application provides a computer program product, comprising a computer program or computer code, which, when run on a computer, performs the method according to the first aspect or any one of the possible implementations of the first aspect.

[0047] According to a twelfth aspect, an embodiment of the present application provides a computer program product, comprising a computer program or computer code, which, when run on a computer, performs a method according to the second aspect or any one of the possible implementations of the second aspect.

[0048] According to a thirteenth aspect, an embodiment of the present application provides a computer program which, when run on a computer, performs the method according to the first aspect or any one of the possible implementations of the first aspect.

[0049] According to a fourteenth aspect, an embodiment of the present application provides a computer program which, when run on a computer, performs the method according to the second aspect or any one of the possible implementations of the second aspect.

[0050] According to a fifteenth aspect, an embodiment of the present application provides a wireless communication system. The wireless communication system includes a transmitter and a receiver. The transmitter is configured to perform a method according to the first aspect or any one of the possible implementations of the first aspect, and the receiver is configured to perform a method according to the second aspect or any one of the possible implementations of the second aspect.

[0051] For the technical effects achieved in the third to fifteenth aspects, please refer to the technical effects of the first or second aspect or the advantageous effects of the subsequent method embodiments, which will not be described in detail here. [Brief explanation of the drawings]

[0052] [Figure 1a] 1 is a diagram of an architecture of a communication system according to an embodiment of the present application; [Figure 1b] 1 is a diagram of an architecture of a communication system according to an embodiment of the present application; [Figure 2a] FIG. 2 is a diagram of a sensing scenario based on one sensing responder, according to an embodiment of the present application. [Figure 2b] FIG. 2 is a diagram of a sensing scenario based on one sensing responder, according to an embodiment of the present application. [Figure 2c] FIG. 2 is a diagram of a sensing scenario based on multiple sensing responders, according to an embodiment of the present application. [Figure 2d]FIG. 2 is a diagram of a sensing scenario based on multiple sensing responders, according to an embodiment of the present application. [Figure 2e] FIG. 2 is a diagram of a sensing scenario based on a sensing requestor, according to an embodiment of the present application. [Figure 2f] FIG. 2 is a diagram of a sensing scenario based on a sensing requestor, according to an embodiment of the present application. [Figure 3] 3 is a schematic flowchart of a method for feeding back sensing measurement results based on UWB according to an embodiment of the present application; [Figure 4] FIG. 1 is a diagram of sampling according to an embodiment of the present application. [Figure 5] 2 is a diagram of the relationship between time blocks, time units, and time subunits according to an embodiment of the present application. [Figure 6] 3 is a diagram of the relationship between sensing blocks, sensing rounds, and sensing slots according to an embodiment of the present application. FIG. [Figure 7a] FIG. 2 is a diagram of a sensing procedure according to an embodiment of the present application. [Figure 7b] FIG. 2 is a diagram of a sensing procedure according to an embodiment of the present application. [Figure 7c] FIG. 2 is a diagram of a sensing procedure according to an embodiment of the present application. [Figure 8] 10A-10C are diagrams of simulation results according to embodiments of the present application. [Figure 9] 1 is a diagram of the structure of a communication device according to an embodiment of the present application; [Figure 10] 1 is a diagram of the structure of a communication device according to an embodiment of the present application; [Figure 11] 1 is a diagram of the structure of a communication device according to an embodiment of the present application; [Figure 12a] FIG. 10 is a diagram of implementing feedback by using the earliest arriving path as a criterion, according to an embodiment of the present application. [Figure 12b] FIG. 10 is a diagram of implementing feedback by using the earliest arriving path as a criterion, according to an embodiment of the present application. [Figure 12c]FIG. 10 is a diagram of implementing feedback by using the strongest arriving path as a criterion, according to an embodiment of the present application. [Figure 12d] FIG. 10 is a diagram of implementing feedback by using the earliest arriving path as a criterion, according to an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0053] To make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described with reference to the accompanying drawings.

[0054] In the present specification, claims, and accompanying drawings, terms such as "first," "second," etc. are used merely to distinguish between different objects and not to indicate a particular order. Furthermore, terms such as "comprise," "have," and any other variations thereof are intended to cover non-exhaustive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but instead may optionally further include unlisted steps or units, or may optionally further include other steps or units inherent to the process, method, product, or device.

[0055] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present application. The appearance of such a phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or optional embodiment exclusive of other embodiments. As can be explicitly and implicitly understood by those skilled in the art, the embodiments described herein may be combined with other embodiments.

[0056] As used herein, "at least one item" means one or more, "multiple" means two or more, "at least two items" means two or more, and "and / or" is used to indicate an association relationship between related objects, indicating that three relationships may exist. For example, "A and / or B" can indicate that only A is present, only B is present, or both A and B are present. A and B may be singular or plural. The character " / " generally indicates an "or" relationship between related objects. "At least one of the following items" or similar expressions means any combination of these items. For example, at least one of a, b, or c can represent a, b, c, a and b, a and c, b and c, or a, b, and c.

[0057] The technical solution provided herein is applicable to UWB-based wireless personal area networks (WPANs). For example, the method provided herein is applicable to the Institute of Electrical and Electronics Engineers (IEEE) 802.15 series of protocols, such as the 802.15.4a protocol, the 802.15.4z protocol, and the 802.15.4ab protocol, or future generations of UWB WPAN standards. The method provided herein may also be applied to various communication systems, such as Internet of Things (IoT) systems, Vehicle to X (V2X), and Narrowband Internet of Things (NB-IoT) systems, including devices in Vehicle to X, Internet of Things nodes, and Internet of Things (IoT) sensors, such as smart cameras, smart remote controls, and smart water meters in smart homes, and sensors in smart cities. The methods provided herein may also be applicable to LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, universal mobile telecommunications system (UMTS), worldwide interoperability for microwave access (WiMAX) communication systems, long term evolution (LTE) systems, fifth-generation (5G) communication systems, sixth-generation (6G) communication systems, etc.

[0058] UWB is a new communications technology that transmits data using narrow, non-sinusoidal impulses at the nanosecond level. Because modulation is performed on impulses with very steep rise and fall times, UWB occupies a wide spectral range, resulting in signals with gigahertz (GHz) bandwidths. The bandwidth used by UWB is typically greater than 1 GHz. UWB systems can directly transmit impulse sequences without generating a sinusoidal carrier signal. Therefore, UWB systems have a wide spectrum and low average power. UWB wireless communication systems offer advantages such as strong multipath resolution, low power consumption, and high confidentiality, which aid in coexistence with other systems and thereby improve spectrum utilization and system capacity. Furthermore, for short-range communication applications, the transmission power of a UWB transmitter is typically less than 1 mW (milliwatt). Theoretically, the interference generated by a UWB signal is equivalent to white noise with only one broadband signal. This facilitates excellent coexistence between ultra-wideband communications and existing narrowband communications. Therefore, a UWB system and a narrowband (NB) communication system can operate simultaneously without interfering with each other. The methods provided herein may be implemented by a communication device in a wireless communication system. In the communication system, a module implementing UWB system functions may be referred to as a UWB module (e.g., may be configured to transmit UWB pulses), and a module implementing a narrowband communication system may be referred to as a narrowband communication module. The UWB module and the narrowband communication module may be different devices, chips, etc. This is not a limitation of the embodiments of the present application. Indeed, the UWB module and the narrowband communication module may alternatively be integrated into one device or chip. The implementation of the UWB module and the narrowband communication module in the communication device is not a limitation of the embodiments of the present application.

[0059] Embodiments of the present application are primarily described using WPANs as examples, and in particular networks used in the IEEE 802.15 series of standards. However, as will be appreciated by those skilled in the art, various aspects of the present application may be extended to other networks using various standards or protocols, such as wireless local area networks (WLANs), Bluetooth, high performance radio LANs (HIPERLANs) (a wireless standard similar to the IEEE 802.11 standard and primarily used in Europe), wide area networks (WANs), or other networks now known or developed in the future. Therefore, various aspects provided herein are applicable to any suitable wireless network, regardless of the coverage area and wireless access protocol used.

[0060] The methods provided herein may be implemented by a communication device in a wireless communication system. The communication device may be a device in a UWB system. For example, the communication device may include, but is not limited to, a communication server, a router, a switch, a bridge, a computer, a mobile phone, etc. As another example, the communication device may include a central control point, such as a personal area network (PAN) or PAN coordinator. As another example, the communication device may include user equipment (UE). User equipment may include various handheld devices, in-vehicle devices, wearable devices, Internet of Things (IoT) devices, computing devices, other processing devices connected to wireless modems, or the like with wireless communication capabilities. Examples are not listed here. As another example, the communication device may include a chip, which may be located in a communication server, a router, a switch, a user terminal, etc. Examples are not listed here.

[0061] For example, FIGS. 1a and 1b are diagrams of architectures of communication systems according to embodiments of the present application. FIG. 1a illustrates a star topology structure according to an embodiment of the present application, and FIG. 1b illustrates a point-to-point topology structure according to an embodiment of the present application. As shown in FIG. 1a, in the star topology, one central control mode can perform data communication with one or more other devices. As shown in FIG. 1b, in the point-to-point topology structure, data communication can be performed between different devices. In FIGS. 1a and 1b, both full-function devices and reduced-function devices may be understood as communication devices described herein. The full-function devices and reduced-function devices are relative to each other. For example, a reduced-function device cannot be a PAN coordinator. As another example, compared to a full-function device, a reduced-function device does not have a coordination function or has a lower communication rate than a full-function device. It is understood that the PAN coordinator shown in FIG. 1b is just an example, and the remaining three full-function devices shown in FIG. 1b may also be used as PAN coordinators, but they are not shown one by one here.

[0062] It can be understood that the full-function device and the reduced-function device described in this application are merely examples of communication devices, and any communication device capable of implementing the method for feeding back sensing measurement results based on UWB provided in this application falls within the scope of protection of this application. The sensing initiator, sensing responder, etc. described below may be full-function devices or reduced-function devices, but this is not limited in this application.

[0063] For example, the communication device illustrated in the embodiments of the present application may include a sensing initiator, a sensing responder, or a sensing requester (alternatively referred to as a sensing requesting device). The sensing initiator and the sensing responder are relative to each other. For example, if the sensing initiator is a party that bypasses the sensing procedure, the sensing responder may be a party that responds to the party that initiates the sensing procedure. For example, the sensing initiator may be a sender of a UWB signal, and the sensing responder is a receiver of a UWB echo signal. As another example, the sensing initiator may be a receiver of a UWB echo signal, and the sensing responder is a sender of a UWB signal. The sensing requester may be understood as a party that initiates a sensing request to the sensing initiator. It may be understood that if a UWB signal transmitted by a sensing initiator first reaches the target and then reaches the sensing responder (e.g., the UWB signal reaches the sensing responder after being reflected or scattered by the target), the signal received by the sensing responder may be referred to as a UWB echo signal if the UWB signal is transmitted by the sensing initiator. For ease of description, it may be understood that a UWB signal and a UWB echo signal may alternatively be collectively referred to as a UWB signal hereinafter and are not distinguished. A UWB signal referred to in this application may alternatively be referred to as a sensing signal, a UWB pulse, etc. It may be understood that one sensing packet referred to below may include one or more UWB pulses (or UWB signals).

[0064] Based on the sensing initiator, sensing responder, and sensing requester shown above, the embodiments of the present application provide the following six scenarios. It can be understood that Figures 2a and 2b can be understood as sensing scenarios based on one sensing responder, for example, called bi-static sensing. Figures 2c and 2d can be understood as sensing scenarios based on multiple sensing responders, for example, called multi-static sensing. Also, in Figures 2a and 2c, the sensing initiator is the receiver of the UWB echo signal, and the sensing responder is the transmitter of the UWB signal. In Figures 2b and 2d, the sensing initiator is the transmitter of the UWB signal, and the sensing responder is the receiver of the UWB echo signal. 2e and 2f can be understood as a sensing scenario based on the participation of a sensing initiator, a sensing responder, and a sensing requester, for example, called sensing by proxy.

[0065] As shown in FIG. 2a, the sensing initiator is a receiver of UWB echo signals, so the sensing initiator can obtain sensing measurement results and target-related information based on the UWB echo signals. Therefore, feedback information does not need to be transmitted between the sensing initiator and the sensing responder over the air interface. As shown in FIG. 2b, the sensing initiator is a transmitter of UWB signals, and the sensing responder is a receiver of UWB echo signals, so the sensing initiator needs to obtain target-related information through feedback information transmitted by the sensing responder. As shown in FIG. 2c, multiple sensing responders are all transmitters of UWB signals. Similarly, feedback information does not need to be transmitted between the sensing initiator and multiple sensing responders over the air interface. However, in the scenario shown in FIG. 2d, the sensing initiator needs to obtain feedback information from multiple sensing responders. As shown in Figure 2e, the sensing requester can send a sensing request to the initiator, where the sensing responder is the sender of the UWB signal and the sensing initiator is the receiver of the UWB echo signal. After obtaining the feedback information, the sensing initiator needs to send feedback to the sensing requester through the air interface. As shown in Figure 2f, the sensing requester sends a sensing request to the sensing initiator, where the sensing initiator is the sender of the UWB signal and the sensing responder is the receiver of the UWB echo signal. After obtaining the feedback signal, the sensing responder first needs to send feedback to the sensing initiator through the air interface. Then, the sensing initiator sends feedback to the sensing requester through the air interface.

[0066] Generally, in Figures 2b and 2d, the sensing responder needs to send feedback information to the sensing initiator, in Figure 2e, the sensing initiator needs to send feedback information to the sensing requester, and in Figure 2f, the sensing responder needs to send feedback information to the sensing initiator, and the sensing initiator needs to send feedback information to the sensing requester.

[0067] The sensing packets shown in Figures 2a to 2e may be understood as UWB signals. A device receiving the sensing packets may obtain sensing measurement results based on the sensing packets. Optionally, the device receiving the sensing packets may further feed back the sensing measurement results by using feedback information.

[0068] In the method of feeding back the sensing measurement results based on UWB, the format of the feedback information can be shown in Table 1. [Table 1]

[0069] According to the feedback information shown in Table 1, the signaling overhead of the feedback information is high, and the feedback information cannot effectively utilize the temporal similarity and spatial inter-layer similarity.

[0070] In view of this, the present application provides a method and apparatus for feeding back measurement results based on UWB, not only to reduce the signaling overhead of feedback information as much as possible, but also to effectively utilize the temporal similarity and spatial inter-layer similarity of parameters in the feedback information. Figure 3 is a schematic flowchart of a method for feeding back sensing measurement results based on UWB according to an embodiment of the present application.

[0071] The method shown in FIG. 3 can be applied to a transmitter and a receiver. The transmitter can be understood as an end that transmits control information, and the receiver can be understood as an end that receives control information. Alternatively, the transmitter can be understood as an end that receives feedback information, and the receiver can be understood as an end that transmits feedback information. For example, the transmitter may include a full-function device, and the receiver may include a reduced-function device. As another example, the transmitter may include a reduced-function device, and the receiver may include a reduced-function device. As another example, the transmitter includes a reduced-function device, and the receiver includes a full-function device. As another example, both the transmitter and the receiver are full-function devices. For example, the transmitter may include the sensing initiator shown in FIGS. 2b and 2d, the receiver may include the sensing responder shown in FIGS. 2b and 2d, and the CIR parameter provider is the sensing responder shown in FIGS. 2b and 2d. As another example, the transmitter may include the sensing requester shown in Figure 2e, the receiver may include the sensing initiator shown in Figure 2e, and the CIR parameter provider is the sensing initiator shown in Figure 2e. As another example, the transmitter may include the sensing initiator shown in Figure 2f, the receiver may include the sensing responder shown in Figure 2f, and the CIR parameter provider is the sensing responder or sensing initiator shown in Figure 2f. As another example, the transmitter may include the sensing requester shown in Figure 2f, the receiver may include the sensing initiator shown in Figure 2f, and the CIR parameter provider is the sensing responder or sensing initiator shown in Figure 2f. As another example, the transmitter may include a sensing requester shown in Fig. 2f, the receiver may include a sensing responder shown in Fig. 2f, and the CIR parameter provider is the sensing responder shown in Fig. 2f. It can be understood that the transmitters and receivers listed based on Fig. 2b, Fig. 2d, Fig. 2e, and Fig. 2f are only examples, and any device capable of implementing the methods provided in the embodiments of the present application falls within the protection scope of the present application.Therefore, the transmitter and receiver shown above should not be construed as limitations on the embodiments of the present application. It can be understood that the methods provided in the embodiments of the present application are described by using a transmitter and a receiver. However, other devices may be involved in the information transmission process of the transmitter and the receiver. For example, a transfer device may be used to transfer information between the transmitter and the receiver. Therefore, the mutual transfer of information in the present application may be implemented by using technical means that can be completed by a person skilled in the art, and devices other than the transmitter and the receiver are not limited in the present application.

[0072] Before describing the method shown in FIG. 3, the following will describe in detail the sampling units and sampling points in the embodiment of the present application.

[0073] FIG. 4 is a diagram of sampling according to an embodiment of the present application. FIG. 4 shows different taps obtained by performing sampling based on one sensing snapshot. In FIG. 4, the abscissa can be understood as the delay from the transmission time to the reception time, and the unit of the delay is nanoseconds (ns). The ordinate can be understood as path loss information, and the unit of the path loss information is decibels (dB). The path loss information can be understood as information obtained based on the attenuation of the UWB signal during transmission from transmission to reception, or information obtained based on the attenuation of the transmission power of the UWB signal. For example, the path loss information shown in FIG. 4 is determined based on the sum of the squares of the real part and the imaginary part of the path loss. As shown in FIG. 4, the method of calculating the ordinate is 10×log10(Re 2 +Im 2)—transmission signal power, where Re can be understood as the real part of the received signal (the received signal is sampled to form taps), and Im can be understood as the imaginary part of the received signal. This should not be construed as a limitation on the embodiments of the present application. The taps shown in the embodiments of the present application can carry delay and path loss information, or the taps may correspond to both path loss information and delay. In general, the relationship between snapshots and taps can be understood as follows: a feedback information provider (or a feedback information generator, i.e., understood as a communication device that generates feedback information) can perform sampling based on parameters acquired in snapshots to obtain multiple taps. It can be understood that FIG. 4 only shows an example in which taps carry delay and path loss information. Optionally, one type may further carry ZOA, AOA, and / or the like (not shown in FIG. 4 ).

[0074] For example, one sensing packet may correspond to one snapshot. For example, after receiving the sensing packet, a receiver (e.g., the sensing responder shown in FIGS. 2b and 2d) may determine parameters acquired based on the sensing packet as parameters of the snapshot. Alternatively, the snapshot can be understood as a set of taps acquired by sampling the sensing packet. When parameters in the sensing snapshot are sampled, the sampling may be performed based on a specific threshold. As shown in FIG. 4, the sampling is performed by using an example in which a value greater than −160 dB is used to acquire different taps in the sensing snapshot. It may be understood that the sampling threshold shown in FIG. 4 is merely an example and should not be construed as a limitation on the embodiments of the present application. It may be understood that the embodiments of the present application are described by using an example in which one sensing packet corresponds to one snapshot. However, the present application is also applicable to cases in which one sensing packet corresponds to multiple snapshots or multiple sensing packets correspond to one snapshot. In other words, based on the case where one sensing packet corresponds to one snapshot as shown in the embodiment of the present application, those skilled in the art can adaptively change the relationship between the sensing packet and the snapshot.

[0075] Optionally, the number of taps included in one snapshot may be determined based on a sampling threshold (e.g., −160 dB shown in FIG. 4 ). Optionally, if the sampling threshold is not set, the duration corresponding to one tap may alternatively be determined based on the sampling frequency. For example, when the sampling frequency is 500 MHz, the snapshot is sampled, and the interval between two taps is 2 ns. The number of taps included in one snapshot is not limited in the embodiment of the present application. Similarly, the number of sensing packets transmitted by the sensing initiator or the number of sensing packets transmitted by the sensing responder is not limited in the embodiment of the present application. For example, the number of sensing packets refers to the number of sensing packets acquired after the CIR parameter provider acquires control information and before the CIR parameter provider acquires feedback information based on the control information. The number of snapshots corresponding to the CIR parameter information fed back in the feedback information is not limited in the embodiment of the present application. In other words, the number of non-reference sampling units shown below is not limited in the embodiment of the present application.

[0076] The snapshots shown above may be referred to as sampling units, and the taps may be referred to as sampling points, sampling nodes, sensing sampling points, etc. The above names are used for explanation purposes in the following description of this application, but should not be construed as limitations on the embodiments of this application.

[0077] As shown in FIG. 3, the method includes the following steps:

[0078] 301: A transmitter transmits control information, and a receiver receives the control information accordingly.

[0079] The control information includes first control information, which instructs feeding back the sensing measurement results using a threshold-based feedback scheme. The control information may be used to control a method of feeding back the sensing measurement results. Optionally, the control information may further be used to control a feedback period of the sensing measurement results. Alternatively, the control information may be understood as control information related to a sensing procedure. The receiver may feed back the sensing measurement results based on the control information. For example, the sensing measurement results are fed back in the form of CIR parameter information. For example, the control information may be included in a physical layer (PHY) protocol data unit (PPDU). For example, the control information may be carried in a physical layer service data unit (PSDU) within the PPDU. The specific location of the control information is not limited by the embodiments of the present application.

[0080] The sensing measurement result can be understood as the original CIR parameter (or the uncompressed CIR parameter, or one or more taps obtained by sampling a snapshot) obtained based on the sensing packet (the CIR parameter shown in Table 8a below indicates the uncompressed CIR parameter). The sensing packet may include one or more UWB pulses (alternatively referred to as a UWB signal, a sensing signal, etc.). In other words, based on the sensing packet, the CIR parameter provider (which may be, for example, a receiver) may obtain sensing measurement results including, for example, the path loss, delay, ZOA, and AOA of the target. It may be understood that the delay may be a delay relative to the UWB pulse transmission time, etc. The reference standard for the delay is not limited in the embodiments of the present application.

[0081] In a possible implementation, the first control information includes information about a first threshold value, which is used to determine whether to feed back sensing measurement results from one or more non-reference sampling units based on sensing measurement results from the reference sampling unit. In other words, the first threshold value is a threshold value used to determine whether to feed back sensing measurement results from one or more non-reference sampling units. For a description of the first threshold value, please refer to the following description of the compressed mode. Details will not be described here.

[0082] For example, the first threshold value shown in the embodiment of the present application may include any one of the high threshold value, normal threshold value, low threshold value, and lower threshold value shown in Table 2. As shown in Table 2, when the value of the field in which the first threshold value is located is 00, it indicates that the first threshold value is a high threshold value; when the value of the field in which the first threshold value is located is 01, it indicates that the first threshold value is a normal threshold value; when the value of the field in which the first threshold value is located is 10, it indicates that the first threshold value is a low threshold value; or when the value of the field in which the first threshold value is located is 11, it indicates that the first threshold value is a lower threshold value. It may be understood that the correspondence between the value of the field in which the first threshold value is located and the description shown in Table 2 is merely an example and should not be construed as a limitation on the embodiment of the present application. The high threshold value, low threshold value, and lower threshold value shown in FIG. 2 are relative to the normal threshold value. The high threshold value, normal threshold value, low threshold value, and lower threshold value are merely classification methods. The thresholds may be further classified into, for example, threshold 1, threshold 2, threshold 3, and threshold 4; first threshold a, first threshold b, first threshold c, and first threshold d; or first threshold, second threshold, third threshold, and fourth threshold. Examples are not listed here. [Table 2]

[0083] It should be noted that the amacCirDifferenceThres shown in Table 2 can be understood as a MAC constant. The specific value of the MAC constant may be defined in a standard, or may be specified by the transmitter. This is not limited by the embodiment of the present application. For example, the MAC constant is 5×10 -4 It can be understood that the MAC information shown in the embodiment of the present application may be the same for all targets, or different targets may have different MAC information, which is not limited in the embodiment of the present application.

[0084] In a possible implementation, the value of the first threshold may be directly proportional to the radar cross section (RCS) of the target. For example, if the RCS of the target is large, the first threshold may be set to a large value (e.g., the high threshold or normal threshold shown in Table 2), or if the RCS of the target is small, the first threshold may be set to a small value (e.g., the low threshold or lower threshold shown in Table 2). It may be understood that large and small are relative to each other. For example, if the transmitter does not acquire the RCS of the target, the value of the first threshold may be set to a small value, e.g., the low threshold or lower threshold, so that the receiver can feedback the sensing measurement results more comprehensively and in detail. If the transmitter determines, based on the acquired sensing measurement results, that the RCS of the target is larger than a certain threshold, the first threshold may be set to a large value, e.g., a value larger than the low threshold or lower threshold. For example, the RCS of an adult may be 1 square meter, and the RCS of a pet may be 0.1 square meters. Therefore, the first threshold value for adults is greater than the first threshold value for pets. Because the value of the first threshold value is greater, it is possible that the sensing measurement results of some non-reference sampling units do not need to be fed back. This effectively reduces the signaling overhead of the CIR parameter information. Accordingly, after the transmitter receives the feedback information, even if the sensing measurement results of some non-reference sampling units are not fed back, the transmitter can still use the sensing measurement results of the reference sampling unit as the sensing measurement results of the non-reference sampling units that have not been fed back. In other words, the value of the first threshold value is updated based on the RCS of the target without affecting the transmitter's acquisition of information related to the target. This effectively reduces the signaling overhead of the CIR parameter information.

[0085] In a possible implementation, the first control information further includes information regarding a compression mode, which includes any one of the following: no compression, a compression mode using a fixed amount of sampling points as a unit, and a compression mode using a variable amount of sampling points as a unit. [Table 3]

[0086] As shown in Table 3, using a fixed amount of sampling points as a unit or using a variable amount of sampling points as a unit means that when determining whether to feed back the sensing measurement results at the non-reference sampling unit based on the first threshold, a fixed amount of sampling points (or a variable amount of sampling points) can be used as a unit to determine whether to feed back the sensing measurement results at the unit. As shown in Table 4, when the sensing measurement results at the unit are fed back, the sensing measurement results at the unit can be compressed by using the sensing measurement results in the reference sampling unit. For example, to obtain a differential sensing measurement result (which can also be understood as the difference between the sensing measurement result of the unit and the sensing measurement result at the same delay in the reference sampling unit), discrimination (differentiation of the same parameter) is performed on the sensing measurement result (e.g., parameter) at the reference sampling unit and the sensing measurement result (e.g., the same parameter) at the corresponding delay at the unit, and the differential sensing measurement result is included in the CIR parameter information. Table 4 and Table 3 can be understood as tables of compression modes described in different ways, and Table 4 can be understood as a more detailed description of the compression mode based on Table 3. [Table 4]

[0087] For simplicity, the sensing measurement results at the unit are hereinafter referred to as a group of sensing measurements. In other words, a certain amount of sampling points is used as a unit, and the sensing measurement results at the sampling unit can be grouped to obtain multiple groups of sensing measurements. When the sensing measurement results include path loss information and delay, the multiple groups of sensing measurements can also be referred to as multiple groups of taps, and the number of taps in each group of taps can be fixed or variable. Indeed, the sensing measurement results may further include AOA and ZOA (when two or more antennas are used when measuring the sensing measurement results). In this case, even if the multiple groups of sensing measurements include path loss information, delay, AOA, and ZOA, the taps (i.e., delay and path loss) can still be used to determine whether all parameters in this group should be fed back.

[0088] The differential sensing measurement result may include positive and negative values ​​because the sensing measurement result at the non-reference sampling unit may be greater than or less than the sensing measurement result at the corresponding delay at the reference sampling unit, and thus the transmitter can accurately restore the sensing measurement result at the non-reference sampling unit based on the differential sensing measurement result and the sensing measurement result at the reference sampling unit.

[0089] The following will be described with reference to the first threshold and the compression mode.

[0090] In an example, if the difference between each tap in the group and the tap with the same delay in the reference sampling unit is smaller than a first threshold, all taps in the group are not fed back, or all sensing measurement results in the group (e.g., the sensing measurement results include path loss information and delay, or may further include AOA and ZOA) are not fed back, or the difference between each tap in the group and the tap with the same delay in the reference sampling unit is not fed back. In other words, if it is determined not to feed back the sensing measurement results in the group, even if the CIR parameter information does not include information about the sensing measurement results in the group, the transmitter can still estimate the sensing measurement results in the group by using the sensing measurement results in the reference sampling unit (e.g., the sensing measurement results in the group can be replaced with the sensing measurement results in the reference sampling unit). This can effectively reduce signaling overhead without affecting the transmitter's acquisition of target-related information.

[0091] In the embodiment of the present application, the "difference" in the description of the difference between each tap in the group and the tap of the same delay in the reference sampling unit may be the difference between the path losses, or the difference between the real parts of the path losses, or the difference between the imaginary parts of the path losses, or the difference between the Re 2 +Im 2 It can be understood that the difference may be determined based on (as shown in FIG. 4). Examples are not listed here. The specific method for calculating the difference is not limited to the embodiments of the present application.

[0092] It should be noted that although the transmitter estimates the sensing measurement results at the group by using the sensing measurement results at the reference sampling unit, the accuracy of the information related to the target acquired by the transmitter is not affected. The reason is as follows: even if the sensing measurement results are fed back in the uncompressed mode, the data is quantized. In this case, the CIR parameter information acquired by the transmitter is data acquired through quantization. The first threshold is determined in the embodiment of the present application, and the error caused by replacing the sensing measurement results at the group with the sensing measurement results at the reference sampling unit is smaller than the error generated during the quantization process. Therefore, the accuracy of the information related to the target acquired by the transmitter is not reduced, and the signaling overhead can be further reduced.

[0093] In another example, if the difference between the taps in the group and the taps with the same delay in the reference sampling unit is greater than a first threshold, the differences between all the taps in the group and the taps with the same delay in the reference sampling unit are fed back, or the differences between all the sensing measurement results in the group (i.e., the differences between the taps in the group and the taps with the same delay in the reference sampling unit) are fed back. In other words, if the difference between the taps in the group and the taps with the same delay in the reference sampling unit is greater than a first threshold, it may be determined that all the sensing measurement results in the group are fed back. Since the sensing measurement results that need to be fed back are fed back in a differential manner, signaling overhead can be effectively reduced.

[0094] In yet another embodiment, if the difference between only the minority taps in a group and the taps of the same delay at the reference sampling unit is greater than a first threshold, only the minority taps in a group may be fed back. For example, if the number of taps in a group whose difference is greater than the first threshold is five or less, only five taps may be fed back, and the other taps in the group may not be fed back. When it is determined to feed back the sensing measurement results in a group, the minority taps in the group (or the sensing measurement results corresponding to the minority taps) are fed back in a differential manner, which effectively reduces the signaling overhead of CIR parameter information.

[0095] For example, the sampling unit shown in Fig. 4 is used as an example. It is assumed that the sampling unit shown in Fig. 4 is a non-reference sampling unit. For example, the difference between the path loss at abscissa 31ns and the path loss at abscissa 31ns in the reference sampling unit is compared with a first threshold, and if the difference is less than or equal to the first threshold, all taps in the group in which abscissa 31ns is located may not be fed back (i.e., the path loss and delay are not fed back when the sensing measurement result includes the path loss and delay), or the sensing measurement result corresponding to each tap in the group in which abscissa 31ns is located is not fed back (i.e., the path loss, delay, AOA, and ZOA are not fed back when the sensing measurement result includes the path loss, delay, AOA, and ZOA), etc.

[0096] It may be understood that the specific value of the number of taps included in the group is not limited in the embodiment of the present application. In the embodiment of the present application, when the difference shown above is equal to the first threshold, whether the sensing measurement results in the group are fed back is not limited. In other words, when the difference between the taps in the group and the taps with the same delay in the reference sampling unit is equal to the first threshold, the difference between all the taps in the group and the taps with the same delay in the reference sampling unit may not be fed back, or the difference between all the taps in the group and the taps with the same delay in the reference sampling unit may be fed back.

[0097] In a possible implementation, the first control information further includes address information of the communication device that receives the control information.

[0098] In an embodiment of the present application, there may be one or more communication devices, i.e., receivers, that receive the control information. The first control information includes address information of one or more receivers, so that each receiver can clearly know the control information, and each receiver processes the sensing measurement results according to the control information to feed back the sensing measurement results obtained by each receiver, which effectively improves communication efficiency.

[0099] For example, Table 5 shows the content of control information according to an embodiment of the present application. The content shown in Table 5 can be understood as information elements (IEs) in the control information. Whether the control information includes other IEs is not limited in the embodiment of the present application. For example, the IE shown in Table 5 can be referred to as a sensing CIR feedback control IE. As shown in Table 5, the sensing CIR feedback control IE can include an element identifier (also referred to as an element ID), an address size specifier, a responder number, and first control information. The first control information can also be referred to as a CIR feedback control parameter. The content of the first control information can be shown in Table 6. As shown in Table 6, the device address can be understood as the address of the receiver, the field where the CIR feedback threshold is located can be understood as the field where the first threshold is located as shown in Table 2, and the field where the compressed mode is located can be understood as the field shown in Table 3 or Table 5. [Table 5] [Table 6]

[0100] For example, as shown in Table 5, the element ID may indicate the ID of the sensing CIR feedback control IE. The address size specifier may indicate the number of bytes indicated by the device address. If the value of the field where the address size specifier is located is 0, it may indicate that the device address uses a 2-byte short address, or if the value of the field where the address size specifier is located is 1, it may indicate that the device address uses an 8-byte extended address. The number of responders may indicate the number of receivers. For example, in Figures 2b and 2d, the number of responders refers to the number of sensing responders participating in the sensing process, in Figure 2e, the number of responders refers to the number of sensing initiators, and in Figure 2f, the number of responders may be the number of sensing initiators or sensing responders. The first control information may include CIR feedback control parameters required by each responder. In other words, the first control information may include control parameters required by each responder, such as a first threshold and a compression mode. For example, as shown in Table 6, the device address may indicate the address of the responder device. For the value of the CIR feedback threshold, please refer to Table 2. The CIR reference information request can be understood as a request for sensing measurement results at the reference sampling unit. For example, if the value of the field where the CIR reference information request is located is 0, it indicates that the responder does not need to feedback the sensing measurement results (also referred to as CIR reference information) at the reference sampling unit, or if the value of the field where the CIR reference information request is located is 1, it indicates that the responder needs to feedback the sensing measurement results at the reference sampling unit. For the value of the compression mode, please refer to Table 3 or Table 4. The details will not be described again here.

[0101] It should be noted that if the target's moving speed is fast, the sensing measurement results at the reference sampling unit may be updated more frequently, and if the target's moving speed is slow, the frequency of updating the sensing measurement results at the reference sampling unit may be reduced. Specifically, if the transmitter recognizes that the target's moving speed is faster than a threshold, the transmitter may set the value of the CIR reference information request to 1 to request the receiver to update the sensing measurement results at the reference sampling unit. If the target's moving speed is slower than the threshold, the transmitter may set the value of the CIR reference information request to 0, indicating that the receiver does not need to update the sensing measurement results at the reference sampling unit. It can be understood that if the target's moving speed is fast, the original CIR parameter will also change significantly. Because the sensing measurement results at the reference sampling unit, i.e., the CIR reference information, are updated more frequently, the dynamic range of the difference, i.e., the differential information, shown in the embodiment of the present application is smaller. In this way, the differential information is represented using a small number of bits.

[0102] 302: The receiver transmits feedback information, and the transmitter receives the feedback information accordingly.

[0103] The feedback information includes CIR parameter information, and the CIR parameter information is obtained by processing the sensing measurement result based on the first control information. The CIR parameter information refers to information obtained by processing the original CIR parameter based on the first control information. For example, the CIR parameter information may be information obtained by performing a quantization process on the original CIR parameter based on the first control information. As another example, the CIR parameter information may be information obtained by performing a quantization and compression process on the original CIR parameter based on the first control information.

[0104] After receiving the feedback information, the receiver may obtain information such as the range, velocity, or attenuation of the target based on the feedback information. The feedback information may be information about one target or information about multiple targets. This is not limited to the embodiments of the present application. For example, after receiving the feedback information, the receiver may parse parameters related to the target to obtain information about one or more targets.

[0105] In a possible implementation, the feedback information further comprises information related to CIR parameter information, wherein the information related to CIR parameter information is: The CIR parameter information includes at least one of the number of sampling units corresponding to the CIR parameter information, the number of sampling points included in each sampling unit, the number of antennas used to measure the sensing measurement results, and information indicating whether the sensing measurement results at the reference sampling unit are stored.

[0106] For example, the number of sampling units corresponding to the CIR parameter information and the number of sampling points included in each sampling unit are included, so that the transmitter can know the total number of sampling points corresponding to the CIR parameter information acquired by the transmitter. Optionally, if grouping is performed in units of a certain amount of sampling points, the transmitter may further acquire the total number of groups. For example, the number of antennas used to measure the sensing measurement results is included, so that the transmitter can accurately distinguish sensing measurement results acquired by different antennas from the CIR parameter information. For example, the information indicating whether the sensing measurement results at the reference sampling unit (which may also be referred to as reference information, CIR reference information, etc.) are stored is included, so that the transmitter can refer to the information in the next control information to instruct the transmitter to update the sensing measurement results at the reference sampling unit (or to instruct the transmitter to update the CIR reference information).

[0107] For example, each piece of information shown above may be present in the feedback information in the form of a field. The contents shown in Table 7 may be included in a CIR feedback report IE (CIR feedback report IR) in the feedback information. Whether the feedback information includes other IEs is not limited by the embodiment of the present application. [Table 7-1] [Table 7-2]

[0108] It can be understood that in Figures 2b, 2d, and 2f, the provider refers to the sensing responder, and in Figure 2e, the provider refers to the sensing initiator. In Figures 2b and 2d, the requester refers to the sensing initiator, and in Figure 2e, the requester refers to the sensing requester, and in Figure 2f, the requester can be the sensing initiator or the sensing requester. For example, if the sensing responder already knows the address of the sensing requester, the requester can be the sensing requester, or if the sensing responder does not know the address of the sensing requester, the requester can be the sensing initiator.

[0109] It should be noted that the value of the local CIR reference status shown in Table 7 affects the value of the CIR reference information request in the next control information. For example, when the local CIR reference status is 0, the value of the CIR reference information request in the next control information can only be 1, which indicates that the receiver is requested to update the CIR reference information. When the local CIR reference status is 1, the value of the CIR reference information request in the next control information can be set to 0 or 1 based on actual requirements. In the embodiment of the present application, the CIR reference information request field and the local CIR reference status field are added in a "handshake" format, which can improve communication reliability and communication efficiency of both communication parties.

[0110] For a description of the CIR feedback direction parameters, please refer to Tables 8a to 8d. It can be understood that Tables 8a to 8d are illustrated by using path loss information as an example. However, when the receiver feedbacks CIR parameter information, delay, AOA, ZOA, etc. may further be included, which are not shown one by one below. For example, the CIR of sampling point 1 in sampling unit 1 may further include delay (i.e., time domain relative to sensing time), differential AOA of tap 1 in snapshot 1, and differential ZOA of tap 1 in snapshot 1. Examples are not listed here.

[0111] It may be understood that the description of the field values ​​and meanings corresponding to the field values ​​shown in Table 7 are merely examples and should not be construed as limitations on the embodiments of the present application. For example, the provider address size specifier field and the requester address size specifier field may be written as follows: if the value is 1, it indicates that a 2-byte short address is used, and if the value is 0, it indicates that an 8-byte extended address is used. Furthermore, the relationship between the value of the field in which the compression mode is located and the compression mode corresponding to each value may alternatively be different from that of Table 3 or Table 4. Examples will not be listed here.

[0112] In a possible implementation, when the value of the compression mode is 00, the CIR parameter information may be shown in Table 8a. In other words, Table 8a shows an example where no compression is performed. The CIR parameter information in Table 8a is taps obtained by sampling parameters obtained in a snapshot, and the taps do not need to be determined by using the first threshold. [Table 8a]

[0113] The parameters and bit lengths in Figure 8a are examples only and should not be construed as limitations on the embodiments of the present application. It can be understood that N_snapshot and N_tap shown above are positive integers.

[0114] In a possible implementation, the feedback information further includes information about a first bitmap, and each bit in the first bitmap indicates whether the sensing measurement results for the corresponding group should be fed back. In other words, after the sensing measurement results are grouped, whether the sensing measurement results for the corresponding group should be fed back can be indicated by the bitmap mode. For example, if a bit in the first bitmap has a value of 1, it indicates that the sensing measurement results for the group corresponding to that bit are not fed back. Also, the difference between the sensing measurement results for the corresponding group and the sensing measurement results for the same delay in the reference sampling unit is smaller than a first threshold. As another example, if a bit in the first bitmap has a value of 0, it indicates that the sensing measurement results for the group corresponding to that bit are fed back. Also, the difference between at least one tap in the corresponding group and the tap for the same delay in the reference sampling unit is larger than a first threshold (which can also be said to be "the difference between at least one tap in the corresponding group and the corresponding tap in the reference sampling unit is larger than a first threshold").

[0115] For example, when the value of compressed mode is 01, the CIR parameter information may be shown in Table 8b. [Table 8b-1] [Table 8b-2]

[0116] It can be understood that the bit length of the first bitmap shown in Table 8b can be determined based on the number of taps in each snapshot shown in Table 7 and the number of taps in each group shown in Table 8b. For example, the bit length of the first bitmap = number of taps in each snapshot / number of taps in each group.

[0117] It can be understood that the reference sampling unit shown in Table 8b is illustrated by using snapshot 1 as an example, but should not be construed as a limitation on the embodiment of the present application. For example, the reference sampling unit may alternatively be snapshot 2, snapshot 3, etc., i.e., the CIR reference information may be the CIR parameter of snapshot 1 or the CIR parameter of another snapshot. Optionally, the N_tap taps included in snapshot 1 shown in Table 8b may be grouped in units of a certain number of taps, or may not be grouped. This is not a limitation on the embodiment of the present application. The CIR parameters of snapshot 1 shown in Table 8b are illustrated by using an example in which no grouping is performed. Therefore, Table 8b shows the N_tap taps in snapshot 1 separately. For the CIR parameters of snapshot 2 shown in Table 8b, grouping must be performed in units of a certain number of taps. Therefore, Table 8b does not show the N_tap taps included in snapshot 2 one by one.

[0118] The CIR parameter information shown in Table 8b is illustrated by using an example in which CIR reference information (i.e., sensing measurement results at the reference sampling unit) is included. For example, the CIR parameter information shown in Table 8b may alternatively not include CIR reference information. In this case, the CIR reference information in the previous feedback information having CIR reference information may be used as the CIR reference information in the current feedback information. When the current feedback does not require CIR reference information (i.e., the CIR parameter information does not include CIR reference information), snapshot 1 also feeds back the sensing measurement results in the manner of other snapshots, that is, feeds back the sensing measurement results in the snapshots in a different manner. It may be understood that the description of the CIR reference information is also applicable to Tables 8c and 8d, and the details will not be described again below.

[0119] In a possible implementation, when the compressed mode includes a compressed mode using a variable amount of sampling points as a unit, the feedback information further includes the following information: the number of groups in one sampling unit, and the start sampling point and the end sampling point in each group. Alternatively, the feedback information further includes the following information: the number of groups in one sampling unit, the start sampling point in each group, and the number of sampling points in each group. In other words, the above information is included so that when obtaining the feedback information, the transmitter can clearly know the grouping information of the sensing measurement results of the receiver and can immediately restore the original CIR parameters.

[0120] For example, when the value of compressed mode is 10, the CIR parameter information may be shown in Table 8c. [Table 8c-1] [Table 8c-2]

[0121] Note that Table 8c is illustrated by using an example in which one snapshot is divided into M groups, where M is a positive integer. When a snapshot is sampled, the delay of each tap in the snapshot is constant because the sampling frequency applicable to the receiver is constant. Therefore, the difference shown above in this application can generally be understood as the difference between the delay tap and the delay tap in the snapshot used as the CIR reference information. The grouping method for snapshot 1 shown in Table 8c can also be applied to the grouping methods for the remaining M-1 snapshots. In other words, it is assumed that the grouping methods for all snapshots in one feedback information remain unchanged. Alternatively, the tap grouping method for the snapshot in the current feedback information may be the same as the tap grouping method for the CIR reference information in the previous feedback information with the CIR reference information.

[0122] Optionally, the feedback information further includes information about a second bitmap, where each bit in the second bitmap indicates whether the sensing measurement result of the corresponding tap should be fed back. The following method is included in the relevant description of step 301: if the difference between only a small number of taps in a group and a tap with the same delay in a reference sampling unit is greater than a first threshold, only the small number of taps in the group can be fed back. In this case, the value of the bit in the first bitmap corresponding to the group is 1, that is, at least one difference between all taps in the group and the corresponding tap in the reference sampling unit is greater than the first threshold. Each bit in the second bitmap can indicate whether the sensing measurement result of the corresponding tap in the group should be fed back. The bit length of the first bitmap can be determined based on the total number of groups. Alternatively, the bit length of the first bitmap can be determined based on the number of sampling points in each sampling unit and the number of taps in each group. The bit length of the second bitmap can be determined based on the compression mode. For example, in a compression mode using a fixed amount of sampling points as a unit, the bit length of the second bitmap can be a fixed amount. As another example, in a compressed mode using a variable amount of sampling points as a unit, the bit length of the second bitmap can be determined based on the number of taps in each group during grouping of each snapshot. The second bitmap can be added so that the bits occupied by the CIR parameter information in each snapshot can be simplified by using two or three bits in the second bitmap, further reducing signaling overhead. It can be understood that the second bitmap shown in the embodiment of the present application is applicable to Table 8b and Table 8c. Table 8c is used below only as an example to illustrate the second bitmap and should not be construed as a limitation on the embodiment of the present application. For example, the second bitmap can be added after adaptive modification according to Table 8b. Details will not be described here.

[0123] For example, when the value of the compressed mode is 10, the CIR parameter information may be shown in Table 8d. For the explanation of Table 8d, please refer to Table 8c, etc. The details will not be described again here. [Table 8d-1] [Table 8d-2] [Table 8d-3]

[0124] It can be understood that a group corresponding to a bit whose bit value is 1 in the first bitmap can have a second bitmap. Thus, Table 8d is merely an example where the value of the bit corresponding to Group 1 and Group M in Snapshot 2 in the first bitmap is 1. However, this should not be construed as a limitation on the embodiments of the present application.

[0125] It can be understood that the CIR parameter information shown in Tables 8a to 8d herein can indicate path loss information in the form of amplitude and phase, or path loss in the form of in-phase and quadrature components. This is not limited to the embodiment of the present application. Optionally, the feedback information may further include information regarding a data mode indicating the path loss information. For example, if the value of the field in which the data mode indicating the path loss information is located is 0, it indicates that the path loss information is fed back in the form of in-phase and quadrature components (which can also be said to be fed back in the form of real and imaginary parts). If the value of the field in which the data mode indicating the path loss information is located is 1, it indicates that the path loss information is fed back in the form of amplitude and phase.

[0126] The feedback information includes information about the data mode indicating the path loss information, so that the format of the path loss information is more diversified, and different feedback formats of the sensing information can be effectively selected for different application scenarios. For example, when the bit width (i.e., the occupied bit length) of the path loss information is small, the accuracy of the feedback based on the amplitude and phase is higher.

[0127] It should be noted that when the feedback information includes the second bitmap, the feedback information may alternatively not include the first bitmap. For example, if all bits in the second bitmap have a value of 0, this may indicate that the sensing measurement results for the group corresponding to the second bitmap are not fed back. If all bits in the second bitmap have a value of 0, the transmitter may continue to read second bitmaps corresponding to subsequent groups. For example, if one or more bits in the second bitmap have a value of 1, this indicates that the sensing measurement results for the group corresponding to the second bitmap are fed back. In other words, the transmitter may know, based on the second bitmap, whether the group corresponding to each second bitmap will feed back the sensing measurement results.

[0128] Indeed, to help the transmitter know that the feedback information includes the first bitmap and the second bitmap, optionally, the feedback information may further include information indicating the bitmaps included in the feedback information, that is, the information may indicate that the feedback information includes the first bitmap, the second bitmap, or the first bitmap and the second bitmap. Details will not be described here.

[0129] Table 9 shows a comparison between the no compression mode and the compression mode using a fixed amount of sampling points as a unit, according to an embodiment of the present application. In an office environment, a moving chair is selected as the sensing target. The above two compression modes are used to report the sensing measurement results in 10 snapshots. As shown in Table 9, when the compression mode is no compression, the sensing measurement results in 10 snapshots require a length of 3000 bytes (the real and imaginary parts of each tap are represented by 12 bits), and the compression ratio is 1, that is, no compression is performed. When the compression mode is the compression mode using a fixed amount of sampling points as a unit (in this simulation, each group of taps contains only one tap, both the real and imaginary parts of the reference tap are represented by 12 bits, and the real part difference and imaginary part difference of the difference information are represented by 8 bits), and the first threshold is 10 -5 (i.e., 1e -5 ), the sensing measurement results with 10 snapshots require a length of 985 bytes, and the compression ratio is 0.3283. Alternatively, the first threshold is 5 × 10 -5 (i.e. 5e -1 ), the sensing measurement results for 10 snapshots require a length of 550 bytes, and the compression ratio is 0.1833. The lower the compression ratio, the lower the bit overhead used to feed back the CIR parameter. From Table 9, it can be seen that the signaling overhead of the CIR parameter can be effectively reduced according to the method provided in this application. [Table 9]

[0130] 8 is a diagram of a simulation result according to an embodiment of the present application. In the simulation diagram (the simulation conditions are the same as those in Table 9), the line with open circles indicates that no compression is performed (No compression shown in FIG. 8), and the line with black asterisks indicates a compression mode in which a fixed amount of sampling points is sampled. For example, the number of taps in each group is 1, and the threshold is 1e -5 The sensing measurement results shown in Figure 8 are obtained by single antenna measurement. When the compression mode is no compression, the abscissa represents the bit width of the real and imaginary parts, which can also be understood as the bit width of the in-phase and quadrature components (IQ bit width). When a compression mode that samples a fixed amount of sampling points is used, the abscissa represents the bit width of the real and imaginary parts of the difference information, or the bit width of the in-phase and quadrature components of the difference information (reference IQ bit width shown in Figure 8). The reference information in this solution uses 12 bits. The ordinate represents the maximum quantization error. From Figure 8, it can be seen that when 12-bit quantization is used, the maximum quantization error in the no compression solution is 2e -5 Meanwhile, in this solution, when 8 bits are used to represent the bit width of the real and imaginary parts of the difference information, the maximum quantization error is 1.6e -5 Therefore, in this solution, the feedback overhead is significantly reduced without increasing the quantization error.

[0131] In an embodiment of the present application, the transmitter transmits control information to the receiver, allowing the receiver to process the original CIR parameter based on the control information, for example, to obtain the CIR parameter information using a threshold-based feedback method. In other words, the CIR parameter information is obtained using a threshold-based feedback method. The sensing measurement result is processed (for example, processed using a threshold-based feedback method) to obtain the CIR parameter information, and then the CIR parameter information is fed back, thereby effectively reducing signaling overhead. Furthermore, the receiver performs processing based on the control information sent by the transmitter, and then the receiver transmits feedback information. This effectively improves the sensing procedure based on UWB pulses, and ensures communication efficiency for both communication parties.

[0132] In the method shown in FIG. 3, in a possible implementation, the control information may further include second control information, which may include information indicating the number of time subunits included in one time unit. A time unit may be understood as the duration of interaction between one control information and one feedback information. Alternatively, a process in which a receiver completes one independent sensing measurement and feedback information report may be referred to as a time unit. Alternatively, a time unit may be understood as the duration in which a transmitter initiates a sensing procedure and obtains feedback information. For example, one time unit may include multiple time subunits. In other words, multiple time subunits may form one time unit. For example, one time unit may include T time subunits, where T is a positive integer.

[0133] In an example, the number of time subunits may indicate a period of the feedback information. For example, the number of time subunits is directly proportional to the period of the feedback information. In an example, the number of time subunits may further indicate a transmission time of the feedback information. For example, the transmission time of the feedback information may be located at the last one or more time subunits within one time unit. In an example, the number of time subunits may further indicate a period of a sensing procedure performed by the transmitter and the receiver. For example, a time unit may also be referred to as a sensing time unit or a sensing round, and a time subunit may also be referred to as a sensing time subunit or a sensing slot. The specific names of the time unit and the time subunit are not limited in the embodiments of the present application. It may be understood that the following description of a sensing round is also applicable to a sensing time unit, and the following description of a sensing slot is also applicable to a sensing time subunit.

[0134] Because the transmitter and receiver may perform multiple sensing procedures, time blocks are further provided in the embodiments of the present application. As shown in FIG. 5, one time block may include N time units, where N is a positive integer, and one time unit may include M time subunits. It may be understood that the time block may also be referred to as a sensing time block, a UWB-based sensing time block, a sensing block, etc. The specific name of the time block is not limited in the embodiments of the present application. For ease of description, the following uses the sensing block, sensing round, and sensing slot shown in FIG. 6 as an example to describe the method provided in the embodiments of the present application. It may be understood that the description of FIG. 6 should refer to FIG. 5.

[0135] For example, a sensing block may be a period specifically used for sensing, and each sensing block may be divided into several sensing rounds, each of which may be used to complete an independent sensing measurement and result report. Each sensing round may be divided into several sensing slots, and each sensing slot may be used to transmit at least one sensing packet (used for sensing). One sensing slot may correspond to one or more sensing packets. Thus, the receiver may perform sensing on a target multiple times in one sensing round. Based on the sensing packets, the receiver may obtain information such as path loss information, delay, AOZ, and AOA. It may be understood that each sensing packet may include one or more UWB pulses.

[0136] For example, the content of the second control information may be shown in Table 10a. As shown in Table 10a, the second control information may include a sensing block duration, a sensing round duration, a sensing slot duration, and a pulse repetition frequency (PRF). The duration of each sensing slot may be the same, and the duration of each sensing round may be the same. The duration shown in the embodiment of the present application may also be referred to as a period, a time length, etc. The number of sensing blocks included in one sensing round can be determined by using the sensing block duration and the sensing round duration. As shown in FIG. 6, one sensing block may include N sensing rounds, where N is a positive integer. The number of sensing slots included in one sensing round can be determined by using the sensing round duration and the sensing slot duration. As shown in FIG. 6, one sensing round may include T sensing slots, where T is a positive integer. [Table 10a]

[0137] Referring to the method shown in FIG. 3 , the sensing measurement results fed back using the feedback information may be sensing measurement results obtained by the receiver sensing the target in one sensing round. In other words, what is fed back using the feedback information may be sensing measurement results obtained in the current sensing round. The feedback information fed back in the current sensing round may include sensing measurement results in a reference sampling unit in the current sensing round. For example, the sensing measurement results in snapshot 1 may be used as reference information for the sensing measurement results fed back in the current sensing round. Alternatively, the feedback information fed back in the current sensing round may not include sensing measurement results in the reference sampling unit. For example, the sensing measurement results in the reference sampling unit included in the feedback information fed back in the previous sensing round may be used as reference information for the sensing measurement results fed back in the current sensing round.

[0138] Referring to the method shown in FIG. 3, the sensing measurement results fed back by using feedback information may alternatively be sensing measurement results obtained by the receiver performing sensing on the target in multiple sensing rounds. In other words, the receiver may feed back sensing measurement results in multiple sensing rounds by using one feedback information. In this case, the feedback information may also include reference information, or may not include reference information. Details will not be described again here.

[0139] Since the transmitter transmits control information in each sensing round, the second control information may further include information indicating whether the sensing measurement results are fed back in the current sensing round. Whether the sensing measurement results are fed back in the current sensing round is indicated, so the receiver can effectively know whether the sensing measurement results are fed back in the current sensing round. If the sensing measurement results do not need to be fed back in the current sensing round, the receiver may first buffer the sensing measurement results in the current sensing round, and upon receiving an indication that the sensing measurement results need to be fed back, feedback the sensing measurement results that have not been fed back to the transmitter in one piece of feedback information. Therefore, an indication of the sensing round may be further added in Tables 8a to 8d, and the leftmost portions of Tables 8a to 8d may be replaced with the tap N_tap of the CIR in the snapshot N_snapshot in the sensing round N_round, where: N_round denotes the number of sensing rounds, N_snapshot denotes the number of snapshots in each sensing round, and N_tap denotes the number of taps in each snapshot. It is assumed that each sensing round contains the same number of snapshots, and each snapshot contains the same number of taps.

[0140] For example, with reference to Table 10a and information indicating whether the sensing measurement result is fed back in the current sensing round, the second control information may be shown in Table 10b. [Table 10b]

[0141] The last two rows of Table 10b are parallel solutions, and only one solution may be used in the determined feedback; the two solutions do not need to coexist. For example, if the value of the field where the CIR update indicator is located is 00, both of the two solutions indicate that CIR differential information is fed back. In other words, the feedback information does not need to include the sensing measurement result in the reference sampling unit; that is, the reference information in the previous feedback information with the reference information is the reference information of the current feedback information. Figure 7b shows the measurement reporting phase when the CIR update indicator is 00. In the feedback information, the differential information indicates the sensing measurement result obtained by the receiver. For example, the CIR parameter information is determined based on the original CIR parameter and the reference information in the feedback information that precedes the feedback information.

[0142] For example, if the value of the field where the CIR update indicator is located is 01, both of the two solutions indicate that the CIR difference information and the difference are fed back. Figure 7c shows the measurement reporting phase when the CIR update indicator is 01. In the feedback information, the difference information and reference information indicate the sensing measurement results obtained by the receiver. For example, the CIR parameter information is determined based on the reference information in the feedback information and the original CIR parameter.

[0143] If the value of the field in which the CIR update indicator is located is 00 or 01, the corresponding compression mode may include any one of a threshold-based compression mode, a snapshot-based compression mode, or a clustering-based compression mode. Furthermore, information indicating any one of the threshold-based compression mode, the snapshot-based compression mode, or the clustering-based compression mode may be further added to the first control information shown in Table 6. If the added information indicates the threshold-based compression mode, the first control information may be as shown in Table 6. If the added information indicates the snapshot-based compression mode or the clustering-based compression mode, other contents of the first control information are not limited by the embodiments of the present application. For example, if the value of the field in which the CIR update indicator is located is 10, both of the two solutions indicate that the CIR is not fed back in the current sensing round, that is, it indicates that the sensing measurement results may not be fed back in the sensing round in which the control information is located. For example, if the value of the field in which the CIR update indicator is located is 11, the first solution may be reserved, and the second solution indicates that the compression mode used in the current sensing round is the threshold-based compression mode. Therefore, the corresponding first control information may be shown in Table 6.

[0144] For example, a snapshot-based compression mode is described as follows:

[0145] For example, a snapshot in any one of one or more sensing rounds that needs to be fed back by an antenna among one or more antennas (snapshot 1 of a first antenna among the antennas used when the sensing measurement result is measured) may be used as a reference sampling unit, and parameter information in the reference sampling unit is used as reference information. For example, a receiver receives UWB signals by multiple antennas and needs to feed back sensing measurement results in a current sensing round (e.g., one sensing round). Therefore, the receiver may use sensing measurement results in a first snapshot in a local sensing round that needs to be fed back by an antenna as reference information. The difference between the sensing measurement results in other snapshots and the reference information is used as difference information.

[0146] For example, a clustering-based compression mode is described as follows:

[0147] The CIRs of all snapshots are clustered. For example, the path loss information may be clustered based on dynamic range, K-means, or Density-Based Spatial Clustering of Applications with Noise (DBSCAN), and the specific implementation of the clustering is not limited by the embodiments of the present application. Then, a tap (i.e., a reference tap) is selected from each cluster as a reference sampling unit, the sensing measurement result in the reference sampling unit is used as reference information, and the difference (referring to the difference between the parameters of the corresponding taps) between other taps (i.e., normal taps) in each cluster and the tap used as reference information is used as difference information. For example, a tap may be selected from cluster 1 as reference information for cluster 1, thereby distinguishing other taps in cluster 1 from the reference tap, and a tap may be selected from cluster 2 as reference information for cluster 2, thereby distinguishing other taps in cluster 2 from the reference tap. Examples are not listed here.

[0148] FIG. 7a is a diagram illustrating a sensing procedure performed in the sensing round according to an embodiment of the present application. As shown in FIG. 7a, in a sensing control phase, a transmitter may transmit control information (which may also be referred to as sensing control information) to a receiver; in a sensing phase, the transmitter may transmit multiple sensing packets to the receiver; and in a measurement report phase, the receiver may transmit feedback information (which may also be referred to as measurement information, measurement report information, etc.) to the transmitter. The transmission control phase may correspond to one or more sensing slots, the sensing phase may correspond to multiple sensing slots, and the measurement report phase may correspond to one or more sensing slots. In FIG. 7a, P is a positive integer less than Q, and Q is a positive integer less than M. For example, P+1 is less than Q, and Q+1 is less than or equal to M-1.

[0149] In a possible implementation, if the target's moving speed is fast, the receiver may perform feedback more frequently, so that the transmitter can obtain information about the target in a timely manner. If the target's moving speed is slow, the frequency of feeding back sensing measurement results can be reduced. Since feedback information needs to be fed back in the last one or more sensing slots in one sensing round, the period or feedback frequency of the feedback information is indicated by using the number of sensing slots included in one or more sensing rounds in the control information. The number of sensing slots is directly proportional to the period of the feedback information, and the number of sensing slots is inversely proportional to the feedback frequency of the feedback information. The greater the number of sensing slots, the longer the period of the feedback information or the lower the feedback frequency of the feedback information.

[0150] For example, if the transmitter requires the receiver to feedback the sensing measurement results more frequently, the number of sensing slots included in one sensing round indicated in the control information will be reduced, thereby shortening the period of the feedback information or increasing the feedback frequency of the feedback information. For example, the transmitter may obtain a relationship between the period of the feedback information and the change frequency of the target according to a specific detection algorithm, so that after receiving the feedback information, the transmitter determines the feedback period of the subsequent feedback information according to the detection algorithm.

[0151] For the parts not described in detail in one of the above implementations, please refer to other implementations, and the details will not be described again here. In addition, the above implementations may be combined with each other.

[0152] From the above, it can be seen that the feedback information in the embodiment of the present application includes a first bitmap and / or a second bitmap. Therefore, the first control information can be further understood as indicating feeding back the sensing measurement results in bitmap mode. The feeding back of the sensing measurement results in bitmap mode shown in the embodiment of the present application may include feeding back differential sensing measurement results in bitmap mode (i.e., feeding back the original CIR parameters and reference information in bitmap mode) or feeding back non-differential sensing measurement results in bitmap mode (i.e., feeding back the original CIR parameters in bitmap mode).

[0153] In an example, the first control information may include instruction information, where the instruction information indicates whether to feed back the sensing measurement result in a bitmap mode (bitmap).

[0154] For example, as shown in Table 11, the first control information may include indication information. [Table 11]

[0155] For example, if the value of the indication information is 0, it indicates that the sensing measurement result is not fed back in bitmap mode (or CIR feedback is not performed in bitmap mode). As another example, if the value of the indication information is 1, it indicates that the sensing measurement result is fed back in bitmap mode (or CIR feedback is performed in bitmap mode).

[0156] In another example, the first control information may not include instruction information, for example, the first control information may instruct to feed back the sensing measurement result in a bitmap mode.

[0157] As indicated above, the first control information may include information regarding the first threshold. For example, the first control information may include a plurality of first thresholds, and after receiving the first control information, the receiver may select one first threshold from the plurality of first thresholds. In this case, the feedback information may include the first threshold selected by the receiver. For example, in addition to being included in the first control information, the first threshold may be further determined by the receiver. For example, the value of the first threshold may be determined based on the thermal noise P n =kTB, where k represents the Boltzmann constant, T represents the temperature in Kelvin (typically 290K at room temperature), and B represents the signal bandwidth. For example, if the bandwidth B is large or the temperature T is high, the first threshold may be set to a large value, or if the bandwidth B is small or the temperature T is low, the first threshold may be set to a small value. If the first threshold is determined by the receiver, the feedback information may include information about the first threshold. Indeed, the first control information may further include one first threshold. The first threshold shown in the embodiments of the present application may be equal to or greater than 0.

[0158] For example, the first threshold may be used to determine whether to feed back sensing measurement results of one or more non-reference sampling units based on sensing measurement results in a reference sampling unit, and the first threshold may be further used to determine whether to feed back sensing measurement results of a group of sampling points in the sampling unit. The sensing measurement results of the group of sampling points may be original CIR parameter information or CIR parameter information obtained based on a difference. Alternatively, the first threshold may be further used to determine whether to feed back sensing measurement results of some sampling points corresponding to a reference path (shown in Figures 12a to 12d below).

[0159] For example, since the feedback information can be used to feed back the sensing measurement results in a bitmap mode, the first control information may further include length information of the bitmap and position information of the corresponding sampling point. For example, the length information of the bitmap may include a window length (W length ), and the position information of the corresponding sampling point may include a reference path (or a position of the reference path, a reference sampling point, etc.) and a window offset (W offset) (also called offset). Optionally, the first control information may further include a sampling rate fs. The sampling rate may be used to determine a time interval Ts between adjacent sampling points, e.g., Ts = 1 / fs. For example, as shown in Figures 12a, 12b, and 12d, the position of the reference sampling point may include the position of the earliest arriving path, or as shown in Figure 12c, the position of the reference sampling point may include the position of the strongest arriving path. It may be understood that the position of the strongest arriving path may be within or outside the window. This is not limited to the embodiments of the present application. In the embodiments of the present application, a method for obtaining the earliest arriving path or the earliest arriving path is used as a feasible example, and the details are as follows: For example, when two communication parties perform sensing measurements for the first time, the window length may be equal to or greater than a certain value, thereby allowing the receiver to know the approximate position of the strongest arriving path or the earliest arriving path, i.e., to know prior information. The window may then continue to be adjusted based on prior information, for example, it may continue to be less than the above value. The specific value of the window length is not limited in the embodiments of the present application. For example, the window length may be a fixed value, for example, a compressed mode using a fixed amount of sampling points as a unit is used (or a fixed amount of sampling points is used as feedback). As another example, the window length may be a variable value, for example, a compressed mode using a variable amount of sampling points as a unit is used (or a variable amount of sampling points is used as feedback). For a specific description of the feedback method, please refer to the above description. The details will not be described again here.

[0160] For example, when the sensing measurement results are fed back in a windowed manner, in an example, when the first control information includes the length of the bitmap and the position information of the corresponding sampling points, the feedback information may not include the length information. In another example, when the first control information does not include the length of the bitmap and the position information of the corresponding sampling points, the feedback information may include the length of the bitmap and the position information of the corresponding sampling points. In yet another example, regardless of whether the first control information includes the above information, the feedback information may include the length of the bitmap and the position information of the corresponding sampling points.

[0161] For example, since the feedback information may include two bitmaps, the first control information may further include N and P. N may be the total number of taps that need to be fed back (if the feedback is performed in a windowed manner, N is equal to the window length), and P is the number of groups. For example, the receiver groups N taps into P groups based on the first control information, and each group includes M taps. If P is not divisible by N, N may be padded with zeros to an integer multiple of P (i.e., in the bitmap corresponding to the last group, the bits representing the last PQ taps are 0, and Q is a modulo operation performed by N on P), and then P groups are obtained by grouping. For example, if the first control information includes information about N and P, the feedback information may not include information about N and P. Alternatively, if the first control information does not include information about N and P, the feedback information may include information about N and P. Alternatively, the feedback information may include information about N and P regardless of whether the first control information includes information about N and P.

[0162] As shown above, the first control information may include information about the compressed mode, and Table 12 may further be obtained based on Table 4. [Table 12]

[0163] The tap groups shown in Table 12 may be determined based on the length of the bitmap shown above. For example, the number of taps N in a tap group may be equal to the window length, i.e., N=W length For example, all taps in a group of taps can be included in one snapshot.

[0164] In an example, if a tap in a snapshot (which may be a windowed CIR (e.g., a CIR determined based on the window length, window offset, etc. shown above) or a non-windowed CIR) is smaller than the first threshold, the corresponding tap is not fed back, or the sensing measurement result corresponding to the tap (e.g., the sensing measurement result may include path loss information and delay, or may further include AOA and ZOA) is not fed back. In other words, if it is determined not to feed back the sensing measurement result of the tap, it indicates that the amplitude corresponding to the tap is too small and has little impact on the sensing result. Therefore, feedback may not be performed. This effectively reduces signaling overhead without affecting the transmitter's acquisition of information about the target. It may be understood that in the embodiments of the present application, the statement that a tap is smaller than the first threshold can be understood as follows: the CIR parameter corresponding to the tap is smaller than the first threshold.

[0165] In another example, taps in a snapshot (which may be windowed CIR or non-windowed CIR) are grouped into P groups, each of which includes M taps. If T taps in a group are smaller than a first threshold, the taps in the corresponding group are not fed back, or the sensing measurement results corresponding to the group are not fed back (e.g., the sensing measurement results may include path loss information and delay, or may further include AOA and ZOA). In other words, if it is determined not to feed back the sensing measurement results of the taps in a group, it indicates that the amplitude corresponding to the group of taps is too small and has little impact on the sensing results. Therefore, feedback may not be performed. This effectively reduces signaling overhead without affecting the transmitter's acquisition of information about the target. T may be a positive integer less than or equal to M.

[0166] For example, as shown in FIGS. 12a and 12b, the feedback information may include a first bitmap, which may indicate whether to feed back the sensing measurement results of the corresponding taps in the group. For example, the receiver may determine the start position of the window based on the position of the earliest arriving path and the window offset, and then determine the position of the window based on the window length and the start position of the window. The taps in the window are the taps in the group. As shown in FIG. 12a, the first, second, third, fourth, seventh, ninth, and tenth taps in the window are all greater than the first threshold. Therefore, the value of the first bitmap is 1111001011. As shown in FIG. 12b, after determining the position of the window, the receiver may further group the taps in the window. For example, two taps are grouped into one group (just one example). For example, the first group of taps, the second group of taps, and the fourth group of taps are all greater than the first threshold. Therefore, the value of the first bitmap is 11001.

[0167] In yet another example, taps in a snapshot (which may be windowed or non-windowed CIR) are grouped into P groups, each group including M taps. Two bitmaps are used to indicate CIR parameter information. If any tap in a group is greater than a first threshold, the corresponding group is fed back. Further, it is determined which tap in the group is greater than the first threshold, and the corresponding tap in the group is fed back. In other words, if it is determined not to feed back the sensing measurement results of the taps in a group, it indicates that the amplitude corresponding to the group of taps is too small and has little impact on the sensing result. Therefore, feedback may not be performed. This effectively reduces signaling overhead without affecting the transmitter's acquisition of information about the target.

[0168] For example, as shown in FIG. 12d, the value of the first bitmap is 10011, indicating that the receiver will feed back taps in the first, fourth, and fifth groups, and the value of the second bitmap is 111011, indicating whether taps in the first, fourth, and fifth groups are fed back individually.

[0169] For example, the same CIR parameter corresponding to different taps (e.g., the loss path and phase of the CIR or the quadrature and in-phase components of the CIR corresponding to different taps) is quantized by using the same bit width, but the corresponding amplitude range is different. Therefore, a scaling factor β can be used for normalization. The scaling factor is related to the transmit / receive antenna pair, and each transmit / receive antenna pair requires a scaling factor. Based on this, the table corresponding to Table 8a can be adaptively modified as shown in Table 13a. [Table 13a]

[0170] For example, a table corresponding to Table 8b can be adaptively modified as shown in Table 13b. [Table 13b-1] [Table 13b-2] [Table 13b-3]

[0171] For example, a table corresponding to Table 8c can be adaptively modified as shown in Table 13c. [Table 13c-1] [Table 13c-2] [Table 13c-3] [Table 13c-4]

[0172] For example, a table corresponding to Table 8d can be adaptively modified as shown in Table 13d. [Table 13d-1] [Table 13d-2] [Table 13d-3] [Table 13d-4] [Table 13d-5]

[0173] The communication device provided in the embodiment of the present application is described below.

[0174] In the present application, the communication device is divided into functional modules based on the above method embodiment. For example, each functional module may be obtained by dividing it based on its corresponding function, or two or more functions may be integrated into one processing module. The integrated module may be implemented in the form of hardware or in the form of a software functional module. Note that in the present application, the module division is merely an example and represents a logical functional division. In actual implementation, other division methods may be used. The following describes in detail the communication device in the embodiment of the present application with reference to Figures 9 to 11.

[0175] 9 is a diagram of the structure of a communication device according to an embodiment of the present application. As shown in FIG. 9, the communication device includes: a processing unit 901 and a transceiver unit 902.

[0176] In some embodiments of the present application, the communication device may be the transmitter or chip shown above, and the chip may be applied to the transmitter. In other words, the communication device may be configured to perform the steps or functions performed by the transmitter in the above method embodiments.

[0177] The transceiver unit 902 is configured to output control information and to input feedback information.

[0178] For example, the processing unit 901 is configured to determine control information, output the control information by using the transceiver unit 902, and input feedback information.

[0179] It may be understood that the processing unit 901 may further perform processing based on the feedback information to obtain information such as the velocity, distance, or attenuation of the target.

[0180] It can be understood that the specific descriptions of the transceiver unit and the processing unit described in the embodiments of the present application are merely examples. For the specific functions, steps, etc. of the transceiver unit and the processing unit, please refer to the above method embodiments. Details will not be described here.

[0181] 9 is used again. In some other embodiments of the present application, the communication device may be the receiver shown above, a chip within the receiver, etc. In other words, the communication device may be configured to perform the steps or functions performed by the receiver in the above method embodiments.

[0182] For example, the transceiver unit 902 is configured to input control information, and the transceiver unit 902 is further configured to output feedback information.

[0183] For example, the processing unit 901 is configured to determine the feedback information based on the control information.

[0184] It can be understood that the specific descriptions of the transceiver unit and the processing unit described in the embodiments of the present application are merely examples. For the specific functions, steps, etc. of the transceiver unit and the processing unit, please refer to the above method embodiments. Details will not be described here.

[0185] In the above embodiments, for descriptions of the control information, feedback information, first control information, second control information, first bitmap, second bitmap, reference sampling unit, etc., please refer to the descriptions in the above method embodiments, and the details will not be described again here.

[0186] The above describes the transmitter and receiver in the embodiment of the present application. The following describes possible product forms of the transmitter and receiver. It should be understood that any product having the function of the transmitter in FIG. 9 or any product having the function of the receiver in FIG. 9 falls within the scope of protection of the embodiment of the present application. It should be further understood that the following description is merely an example, and the product forms of the transmitter and receiver in the embodiment of the present application are not limited thereto.

[0187] In a possible implementation, in the communication device shown in FIG. 9, the processing unit 901 may be one or more processors. The transceiver unit 902 may be a transceiver, or the transceiver unit 902 may be a transmitting unit and a receiving unit. The transmitting unit may be a transmitter, and the receiving unit may be a receiver. The transmitting unit and the receiving unit may be integrated into one component, such as a transceiver. In the embodiments of the present application, the processor and the transceiver may be combined, etc. The manner in which the processor and the transceiver are connected is not limited to the embodiments of the present application. When the above method is executed, the process of transmitting information in the above method may be understood as a process of outputting the information by the processor. When outputting information, the processor outputs the information to the transceiver, and the transceiver thereby transmits the information. After the information is output by the processor, other processing may need to be performed on the information before it arrives at the transceiver. Similarly, the process of receiving information in the above method may be understood as a process of receiving input information by the processor. When the processor receives input information, the transceiver receives the information and inputs the information to the processor. Additionally, after the transceiver receives the above information, other processing may need to be performed on the information before it is input to the processor.

[0188] As shown in FIG. 10, the communications device 100 includes one or more processors 1020 and a transceiver 1010 .

[0189] For example, when the communications device is configured to perform steps, methods, or functions performed by a transmitter, the processor 1020 is configured to determine control information and the transceiver 1010 is configured to transmit the control information to a receiver and receive feedback information from the receiver.

[0190] For example, when a communication device is configured to perform a step, method, or function performed by a receiver, the transceiver 1010 is configured to receive control information from a transmitter, the processor 1020 is configured to determine feedback information based on the control information, and the transceiver 1010 is further configured to transmit the feedback information to the transmitter.

[0191] In the above embodiments, for descriptions of the control information, feedback information, first control information, second control information, first bitmap, second bitmap, reference sampling unit, etc., please refer to the descriptions in the above method embodiments, and the details will not be described again here.

[0192] In each implementation of the communications apparatus shown in Figure 10, the transceiver may include a receiver and a transmitter, where the receiver is configured to perform receiving functions (or operations), the transmitter is configured to perform transmitting functions (or operations), and the transceiver is configured to communicate with other devices / apparatuses over a transmission medium.

[0193] Optionally, the communication device 100 may further include one or more memories 1030 configured to store program instructions, data, and / or the like. The memory 1030 is coupled to the processor 1020. The coupling in the present embodiment may be an indirect coupling or communication connection between devices, units, or modules in an electrical, mechanical, or other form, used for information exchange between the devices, units, or modules. The processor 1020 may cooperate with the memory 1030. The processor 1020 may execute program instructions stored in the memory 1030. Optionally, at least one of the one or more memories may be included in the processor.

[0194] In the present embodiment, the specific connection medium between the transceiver 1010, the processor 1020, and the memory 1030 is not limited. In the present embodiment, the memory 1030, the processor 1020, and the transceiver 1010 are connected through a bus 1040 in FIG. 10. The bus is represented by a bold line in FIG. 10. The connection method of other components is merely an example for description and is not limited thereto. The bus may be classified as an address bus, a data bus, a control bus, etc. For simplicity of representation, only one bold line is used to represent a bus in FIG. 10, but this does not mean that there is only one bus or only one type of bus.

[0195] In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc. The processor may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in connection with the embodiments of the present application may be performed directly by a hardware processor, or may be performed by using a combination of hardware and software modules in a processor, etc.

[0196] In embodiments of the present application, memory may include, but is not limited to, non-volatile memory such as a hard disk drive (HDD) or solid-state drive (SSD), random access memory (RAM), erasable programmable read-only memory (EPROM), read-only memory (ROM), or portable read-only memory (CD-ROM). Memory is any storage medium that can be used to carry or store program code in the form of instructions or data structures and that can be read and / or written by a computer (e.g., a communication device described herein). However, the present application is not limited thereto. Memory in embodiments of the present application may alternatively be a circuit or any other device capable of implementing a storage function and configured to store program instructions and / or data. For example, in the case of a receiver, the memory may store reference information, i.e., sensing measurement results in a sampling unit. Optionally, in case of a transmitter, the memory of the transmitter may also store the reference information, since the transmitter needs to parse the CIR parameter information based on the reference information.

[0197] For example, the processor 1020 is primarily configured to process communication protocols and communication data, control the entire communication device, execute software programs, and process data of the software programs. The memory 1030 is primarily configured to store software programs and data. The transceiver 1010 may include control circuitry and an antenna. The control circuitry is primarily configured to convert between baseband signals and radio frequency signals and process the radio frequency signals. The antenna is primarily configured to receive and transmit radio frequency signals in the form of electromagnetic waves. The input / output device, such as a touch screen, display, or keyboard, is primarily configured to receive data input by a user and output data to a user.

[0198] After the communication device is powered on, the processor 1020 can read the software program in the memory 1030, interpret and execute the instructions of the software program, and process data of the software program. When data needs to be transmitted wirelessly, the processor 1020 performs baseband processing on the data to be transmitted and then outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal through an antenna in the form of electromagnetic waves. When data is transmitted to the communication device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal to a baseband signal, and outputs the baseband signal to the processor 1020. The processor 1020 converts the baseband signal to data and processes the data.

[0199] In other implementations, the radio frequency circuitry and antenna may be located independently from the processor that performs the baseband processing, for example, in a distributed scenario, the radio frequency circuitry and antenna may be located independently and remotely from the communication device.

[0200] The communication device described in the embodiment of the present application may further include more components than those shown in FIG. 10, etc. This is not limited to the embodiment of the present application. The above-described method performed by the processor and the transceiver is merely an example. For specific steps performed by the processor and the transceiver, please refer to the above-described method.

[0201] In another possible implementation, in the communication device shown in FIG. 9, the processing unit 901 may be one or more logic circuits. The transceiver unit 902 may be an input / output interface, also referred to as a communication interface, interface circuit, interface, etc. Alternatively, the transceiver unit 902 may be a transmitting unit and a receiving unit. The transmitting unit may be an output interface, and the receiving unit may be an input interface. The transmitting unit and the receiving unit may be integrated into one unit, such as an input / output interface. As shown in FIG. 11, the communication device shown in FIG. 11 includes a logic circuit 1101 and an interface 1102. In other words, the processing unit 901 may be implemented using the logic circuit 1101, and the transceiver unit 902 may be implemented using the interface 1102. The logic circuit 1101 may be a chip, a processing circuit, an integrated circuit, a system-on-chip (SoC) chip, etc. The interface 1102 may be a communication interface, an input / output interface, a pin, etc. 11 shows an example in which the communication device is a chip. The chip includes a logic circuit 1101 and an interface 1102. This is not limited to the embodiment of the present application. The step of transmitting a sensing packet shown above may be performed by the ultra-bandwidth chip, and whether the remaining steps are performed by the ultra-bandwidth chip is not limited to the embodiment of the present application.

[0202] In the embodiments of the present application, the logic circuit and the interface may be coupled to each other, and the specific method of connecting the logic circuit and the interface is not limited to the embodiments of the present application.

[0203] For example, if the communication device is configured to perform a method, function, or step performed by a transmitter, the logic circuit 1101 is configured to determine control information, and the interface 1102 is configured to output the control information and input feedback information. The logic circuit 1101 is further configured to process the feedback information to obtain information about the target.

[0204] For example, when the communications device is configured to perform a method, function, or step performed by a receiver, the interface 1102 is configured to input control information, the logic circuit 1101 is configured to determine feedback information based on the control information, and the interface 1102 is further configured to output the feedback information.

[0205] It can be understood that the communication device shown in the embodiments of the present application may implement the methods provided in the embodiments of the present application in the form of hardware, or may implement the methods provided in the embodiments of the present application in the form of software, which is not limited to the embodiments of the present application.

[0206] In the above embodiments, for descriptions of the control information, feedback information, first control information, second control information, first bitmap, second bitmap, reference sampling unit, etc., please refer to the descriptions in the above method embodiments, and the details will not be described again here.

[0207] For the specific implementation of the embodiment shown in Figure 11, please refer to the above embodiment, and the details will not be described again here.

[0208] An embodiment of the present application further provides a wireless communication system, which includes a transmitter and a receiver, and the transmitter and the receiver may be configured to perform the method in any one of the above embodiments (shown in FIG. 3).

[0209] Additionally, the present application further provides a computer program, which can be used to implement the actions and / or processes performed by the transmitter in the methods provided herein.

[0210] The present application further provides a computer program, which can be used to implement the actions and / or processes performed by the receiver in the methods provided herein.

[0211] The present application further provides a computer-readable storage medium having computer code stored thereon, which, when executed by a computer, enables the computer to perform the actions and / or processes performed by the transmitter in the methods provided herein.

[0212] The present application further provides a computer-readable storage medium having computer code stored thereon, which, when executed by a computer, enables the computer to perform the actions and / or processes performed by a receiver in the methods provided herein.

[0213] The present application further provides a computer program product, which includes computer code or a computer program that, when executed by a computer, performs the actions and / or processes performed by the transmitter in the methods provided herein.

[0214] The present application further provides a computer program product, which includes computer code or a computer program that, when executed by a computer, performs the operations and / or processes performed by a receiver in the methods provided herein.

[0215] It should be understood that the disclosed systems, devices, and methods in some embodiments provided herein may be implemented in other manners. For example, the device embodiments described are merely examples. For example, the division into units is merely a logical division of function, and other divisions may be used in actual implementation. For example, multiple units or components may be combined or integrated into other systems, or some features may be omitted or not implemented. Furthermore, the shown or discussed mutual couplings or direct couplings or communication connections may be implemented through some interfaces, indirect couplings or communication connections between devices or units, or electrical, mechanical, or other forms of connection.

[0216] The units described as separate parts may or may not be physically separated, and the parts shown as units may or may not be physical units, and may be located in one place or distributed across multiple network units. Some or all of the units may be selected based on actual requirements to implement the technical effects of the solutions provided in the embodiments of the present application.

[0217] Furthermore, the functional units in the embodiments of the present application may be integrated into one processing unit, each unit may exist physically independently, or two or more units may be integrated into one unit. The integrated unit may be implemented in the form of hardware or in the form of a software functional unit.

[0218] When an integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, the integrated unit may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may essentially be implemented in the form of a software product, or the portion contributing to the prior art, or part or all of the technical solution. A computer software product is stored in a readable storage medium and includes a plurality of instructions that instruct a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method described in the embodiments of the present application. The readable medium includes any medium that can store program code, such as a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0219] The above description is merely a specific implementation of the present application and is not intended to limit the scope of protection of the present application. Any modifications or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present application should fall within the scope of protection of the present application. Therefore, the scope of protection of the present application should be governed by the scope of protection of the claims.

[0220] This application claims priority to Chinese Patent Application No. 202210418108.7, filed with the State Intellectual Property Office of China on April 20, 2022, entitled "METHOD FOR FEEDING BACK SENSING MEASUREMENT RESULT BASED ON ULTRA WIDEBAND AND APPARATUS," and Chinese Patent Application No. 202211698165.1, filed with the State Intellectual Property Office of China on December 28, 2022, entitled "METHOD FOR FEEDING BACK SENSING MEASUREMENT RESULT BASED ON ULTRA WIDEBAND AND APPARATUS," both of which are incorporated herein by reference in their entireties.

Claims

1. 1. A method for feeding back sensing measurements in a wireless network, comprising: Transmitting control information including first control information, the first control information instructing to feed back the sensing measurement result in a bitmap mode; receiving feedback information including channel impulse response (CIR) parameter information obtained by processing the sensing measurement results based on the control information; and The feedback information includes a first bitmap, and each bit in the first bitmap indicates whether to feed back the sensing measurement result in the corresponding group. method.

2. the first control information includes information regarding a first threshold, the first threshold instructing processing of the sensing measurement result based on the first threshold; The method of claim 1.

3. The first control information further includes information regarding a compression mode, and the compression mode includes any one of the following: no compression, a compression mode using a fixed amount of sampling points as a unit, and a compression mode using a variable amount of sampling points as a unit. The method of claim 1.

4. the first control information further includes information indicating a length of a bitmap and position information of a corresponding sampling point; 3. The method according to claim 1 or 2.

5. the position information of the corresponding sampling point includes a reference path and an offset of a starting position of the sampling point relative to the reference path; The method of claim 4.

6. The feedback information further includes a second bitmap, and each bit in the second bitmap indicates whether to feed back the sensing measurement result of the sampling point in the corresponding group. The method of claim 4.

7. The feedback information further includes information related to the CIR parameter information, and the information related to the CIR parameter information includes the following: the number of sampling units corresponding to the CIR parameter information, the number of sampling points included in each sampling unit, the number of antennas used to measure the sensing measurement results, and information indicating whether the sensing measurement results in the reference sampling unit are stored; The method of claim 4.

8. A communication device, a transceiver unit configured to transmit control information including first control information, the first control information instructing feedback of sensing measurement results in a bitmap mode; the transceiver unit is further configured to receive feedback information including channel impulse response (CIR) parameter information obtained by processing the sensing measurement results based on the control information; The feedback information includes a first bitmap, and each bit in the first bitmap indicates whether to feed back the sensing measurement result in the corresponding group. Device.

9. the first control information includes information regarding a first threshold, the first threshold instructing processing of the sensing measurement result based on the first threshold; 9. The apparatus of claim 8.

10. The first control information further includes information regarding a compression mode, and the compression mode includes any one of the following: no compression, a compression mode using a fixed amount of sampling points as a unit, and a compression mode using a variable amount of sampling points as a unit.

9. The apparatus of claim 8.

11. the first control information further includes information indicating a length of a bitmap and position information of a corresponding sampling point; 10. Apparatus according to claim 8 or 9.

12. the position information of the corresponding sampling point includes a reference path and an offset of a starting position of the sampling point relative to the reference path; 12. The apparatus of claim 11.

13. 1. A method for feeding back sensing measurements in a wireless network, comprising: receiving control information including first control information, the first control information instructing feedback of the sensing measurement result in a bitmap mode; transmitting feedback information including channel impulse response (CIR) parameter information obtained by processing the sensing measurement result based on the first control information; and The feedback information includes a first bitmap, and each bit in the first bitmap indicates whether to feed back the sensing measurement result in the corresponding group. method.

14. the first control information includes information regarding a first threshold, the first threshold instructing processing of the sensing measurement result based on the first threshold; The method of claim 13.

15. The first control information further includes information regarding a compression mode, and the compression mode includes any one of the following: no compression, a compression mode using a fixed amount of sampling points as a unit, and a compression mode using a variable amount of sampling points as a unit. The method of claim 13.

16. the first control information further includes information indicating a length of a bitmap and position information of a corresponding sampling point; 15. The method of claim 13 or 14.

17. the position information of the corresponding sampling point includes a reference path and an offset of a starting position of the sampling point relative to the reference path; 17. The method of claim 16.

18. The feedback information further includes a second bitmap, and each bit in the second bitmap indicates whether to feed back the sensing measurement result of the sampling point in the corresponding group.

17. The method of claim 16.

19. The feedback information further includes information related to the CIR parameter information, and the information related to the CIR parameter information includes the following: the number of sampling units corresponding to the CIR parameter information, the number of sampling points included in each sampling unit, the number of antennas used to measure the sensing measurement results, and information indicating whether the sensing measurement results in the reference sampling unit are stored; 17. The method of claim 16.

20. A communication device, a transceiver unit configured to receive control information including first control information, the first control information instructing feedback of sensing measurement results in a bitmap mode; The transceiver unit is further configured to transmit feedback information including channel impulse response (CIR) parameter information obtained by processing the sensing measurement result based on the first control information. The feedback information includes a first bitmap, and each bit in the first bitmap indicates whether to feed back the sensing measurement result in the corresponding group. Device.

21. the first control information includes information regarding a first threshold, the first threshold instructing processing of the sensing measurement result based on the first threshold; 21. The apparatus of claim 20.

22. The first control information further includes information regarding a compression mode, and the compression mode includes any one of the following: no compression, a compression mode using a fixed amount of sampling points as a unit, and a compression mode using a variable amount of sampling points as a unit.

21. The apparatus of claim 20.

23. the first control information further includes information indicating a length of a bitmap and position information of a corresponding sampling point; 22. Apparatus according to claim 20 or 21.

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