Method and apparatus for feeding back sensing measurement results based on ultra-wideband.

Abstract

This provides a method for feeding back sensing measurement results based on UWB. [Solution] The method can be applied to UWB-based WPAN systems (e.g., 802.15.4a, 802.15.4z, or 802.15.4ab protocols within the 802.15 series protocols), or next-generation Wi-Fi protocols of IEEE 802.11ax (e.g., 802.11be, Wi-Fi 7, or EHT) and next-generation protocols of 802.11be (e.g., wireless local area network systems within the 802.11 series protocols, such as Wi-Fi 8), sensing systems, etc. The method includes a transmitter transmitting control information and a receiver correspondingly receiving the control information. The receiver then transmits feedback information and the transmitter correspondingly receives the feedback information. According to the technical solution provided herein, signaling overhead can be effectively reduced.

Description

[Technical Field]

[0001] This application relates to the field of communication technology, particularly to a method and apparatus for feeding back sensing measurement results based on ultra-wideband. [Background technology]

[0002] Ultra-wideband (UWB) is a wireless carrier communication technology that can transmit data using narrow, non-sinusoidal impulses at the nanosecond level. Therefore, ultra-wideband occupies a wide spectral range. Due to its narrow pulses and low radiated spectral density, UWB offers advantages such as strong multipath resolution, low power consumption, and high security.

[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 the UWB signal relative to the target. In a sensing application scenario, the sensing initiator is the transmitter of the UWB signal, and the sensing responder is the receiver of the UWB echo signal. If the sensing initiator needs to acquire 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 method could potentially be further reduced. [Overview of the Initiative]

[0005] This invention provides a method for feeding back sensing measurement results based on UWB in order to effectively reduce signaling overhead.

[0006] According to a first aspect, embodiments of the present application provide a method for feeding back sensing measurement results based on ultra-broadband. The method is: The system transmits control information including first control information, and the first control information instructs the system to feed back the sensing measurement results using a threshold-based feedback method. The system receives feedback information, including channel impulse response (CIR) parameter information, obtained by processing the sensing measurement results based on the first control information. Includes.

[0007] In accordance with a second aspect, embodiments of the present application provide a method for feeding back sensing measurement results based on ultra-broadband. The method is: The system receives control information including first control information, and the first control information instructs the system to feed back the sensing measurement results using a threshold-based feedback method. The system transmits feedback information including channel impulse response CIR parameter information obtained by processing the sensing measurement results based on the first control information. Includes.

[0008] In the embodiments of this invention, the transmitter transmits control information to the receiver, thereby allowing the receiver to process the original CIR parameters based on the control information, for example, to acquire CIR parameter information in a threshold-based feedback manner. In other words, CIR parameter information is acquired in a threshold-based feedback manner. The sensing measurement results are processed to acquire CIR parameter information (for example, processed in a threshold-based feedback manner), and then the CIR parameter information is fed back to effectively reduce signaling overhead. In addition, the receiver performs processing based on the control information transmitted by the transmitter, and then the receiver transmits feedback information. This improves UWB pulse-based sensing procedures and ensures communication efficiency for both communication parties.

[0009] Referring to the first or second aspect, in a possible implementation, the first control information includes information about a first threshold, which is used to determine whether sensing measurement results should be fed back to one or more non-reference sampling units based on sensing measurement results in a reference sampling unit.

[0010] Referencing the first or second aspect, in any possible implementation, the first threshold is used to determine whether one or more groups of sensing measurements should be fed back into each of one or more non-reference sampling units, based on the sensing measurement results in the reference sampling unit.

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

[0012] In embodiments of the present invention, the value of the first threshold is updated based on the target's RCS 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, e.g., a low threshold or a lower threshold, thereby enabling the receiver to feed back the sensing measurement results more comprehensively and in detail. If the transmitter, based on the acquired sensing measurement results, notices that the target's RCS is greater than a particular threshold, the first threshold may be set to a large value, e.g., greater than a low threshold or a lower threshold. Because the value of the first threshold is larger, the 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 the sensing measurement results of some non-reference sampling units have not been fed back, the transmitter can still use the sensing measurement results in the reference sampling units as sensing measurement results in the non-reference sampling units that have not been fed back.

[0013] Referring to the first or second aspect, in a possible implementation, the first control information further includes information relating to a compression mode, the compression mode including one of the following: no compression, a compression mode using a fixed number of sampling points (a compression mode using a fixed number of taps), and a compression mode using a variable number of sampling points (a compression mode using a variable number of taps).

[0014] For example, "no compression" means that the sensing measurement results are directly fed back using the taps acquired by sampling and do not need to be determined based on a first threshold. A compression mode using a fixed number of taps as units, or a compression mode using a variable number of taps as units, means that one or more taps acquired by sampling may be classified into a group, and then it is determined based on a first threshold whether the sensing measurement results of the group should be fed back.

[0015] In the embodiments of this invention, in the compression mode using a fixed number of sampling points as units, the method is easy to implement, and the transmitter is not affected when acquiring target-related information. This effectively reduces the signaling overhead of the CIR parameters. In the compression mode using a variable number of sampling points as units, the receiver has a greater degree of freedom in performing the compression process, and the transmitter is not affected when acquiring target-related information. This effectively reduces the signaling overhead of the CIR parameters.

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

[0017] In the embodiment of the present invention, the first control information includes address information of one or more receivers, thereby allowing each receiver to clearly know the control information, and each receiver processes the sensing measurement results based on the control information in order to feed back the sensing measurement results acquired by each receiver. This effectively improves communication efficiency.

[0018] Referring to the first aspect or the second aspect, in a possible implementation, the feedback information further includes information related to the CIR parameter information, and 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 result, and information indicating whether the sensing measurement result in the reference sampling unit is stored.

[0019] In an 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. This improves the communication efficiency of both communication parties.

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

[0021] In an 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 receiver's sensing measurement results in order to immediately restore the original CIR parameters.

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

[0023] Referring to the first side or the second side, 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] Referring to the first side or the second side, 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 component and quadrature component.

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

[0026] Referring to the second side, in a possible implementation method, the method includes grouping the sensing measurement results in units of a certain amount of sampling points or a variable amount of sampling points to obtain one or more groups of sensing measurement results, and when the difference between the sensing measurement results in the group and the sensing measurement results of the same delay in the reference sampling unit is less than or equal to the first threshold, determining not to feedback the sensing measurement results in that group, or when the difference between the sensing measurement results in the group and the sensing measurement results of the same delay in the reference sampling unit is greater than the first threshold, determining to feedback the sensing measurement results in that group, and further including feedbacking the sensing measurement results in that group by using the difference.

[0027] In accordance with a third aspect, embodiments of the present application provide a communication device configured to implement a method according to either the first aspect or a possible implementation thereof. The communication device includes a unit that implements a method according to either the first aspect or a possible implementation thereof.

[0028] In accordance with the fourth aspect, embodiments of the present application provide a communication device configured to implement a method according to either the second aspect or a possible implementation thereof. The communication device includes a unit that implements a method according to either the second aspect or a possible implementation thereof.

[0029] In a 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 processing unit, please refer to the embodiments of the device provided below.

[0030] In accordance with a fifth aspect, embodiments of the present application provide a communication device. The communication device includes a processor configured to perform a method according to either the first aspect or a possible implementation thereof. Alternatively, the processor is configured to execute a program stored in memory. Once the program is executed, a method according to either the first aspect or a possible implementation thereof is performed.

[0031] In a feasible implementation, the memory is located outside the communication device.

[0032] In possible implementations, the memory is located within the communication device.

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

[0034] In possible implementations, the communication device further includes a transceiver, which is configured to receive or transmit signals.

[0035] In accordance with the sixth aspect, embodiments of the present application provide a communication device. The communication device includes a processor configured to perform a method according to the second aspect or a possible implementation thereof. Alternatively, the processor is configured to execute a program stored in memory. Once the program is executed, a method according to the second aspect or a possible implementation thereof is performed.

[0036] In a feasible implementation, the memory is located outside the communication device.

[0037] In possible implementations, the memory is located within the communication device.

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

[0039] In possible implementations, the communication device further includes a transceiver, which is configured to receive or transmit signals.

[0040] In accordance with a seventh aspect, embodiments of the present application provide a communication device. The communication device includes a logic circuit and an interface, the logic circuit being coupled to the interface, and the logic circuit being configured to output control information and input feedback information through the interface.

[0041] It can be understood that the logic circuit is further configured to perform processing based on feedback information in order to acquire information related to the target. For example, information related to the target may include information such as velocity, angle, or attenuation.

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

[0043] It can be understood that the logic circuit is further configured to determine feedback information based on control information.

[0044] In accordance with the ninth aspect, embodiments of the present application provide a computer-readable storage medium. The computer-readable storage medium is configured to store a computer program, and when the computer program is executed on a computer, a method according to the first aspect or any one of the possible implementations of the first aspect is performed.

[0045] According to the tenth aspect, embodiments of the present application provide a computer-readable storage medium. The computer-readable storage medium is configured to store a computer program, and when the computer program is executed on a computer, a method according to the second aspect or one of the possible implementations of the second aspect is performed.

[0046] In accordance with the eleventh aspect, embodiments of the present application provide a computer program product, which comprises a computer program or computer code, and when the computer program product is executed on a computer, a method according to the first aspect or one of the possible implementations thereof is performed.

[0047] In accordance with the twelfth aspect, embodiments of the present application provide a computer program product. The computer program product comprises a computer program or computer code, and when the computer program product is executed on a computer, a method according to the second aspect or one of the possible implementations of the second aspect is performed.

[0048] In accordance with the thirteenth aspect, embodiments of the present application provide a computer program. When the computer program is executed on a computer, a method according to the first aspect or one of the possible implementations of the first aspect is performed.

[0049] In accordance with the fourteenth aspect, embodiments of the present application provide a computer program. When the computer program is executed on a computer, a method is performed according to the second aspect or one of the possible implementations of the second aspect.

[0050] In accordance with the fifteenth aspect, embodiments of the present application provide 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 one of possible implementations thereof, and the receiver is configured to perform a method according to the second aspect or one of possible implementations thereof.

[0051] For the technical effects achieved in Aspects 3 through 15, please refer to the technical effects of Aspect 1 or 2 or the advantageous effects of the subsequent embodiments of the method. Details are not provided here. [Brief explanation of the drawing]

[0052] [Figure 1a] This is a diagram showing the architecture of a communication system according to an embodiment of the present invention. [Figure 1b] This is a diagram showing the architecture of a communication system according to an embodiment of the present invention. [Figure 2a] This is a diagram of a sensing scenario based on a single sensing responder according to an embodiment of the present invention. [Figure 2b] This is a diagram of a sensing scenario based on a single sensing responder according to an embodiment of the present invention. [Figure 2c] This is a diagram of a sensing scenario based on multiple sensing responders according to an embodiment of the present invention. [Figure 2d]This is a diagram of a sensing scenario based on multiple sensing responders according to an embodiment of the present invention. [Figure 2e] This is a diagram of a sensing scenario based on a sensing requester according to an embodiment of the present invention. [Figure 2f] This is a diagram of a sensing scenario based on a sensing requester according to an embodiment of the present invention. [Figure 3] This is a schematic flowchart of a method for feeding back sensing measurement results based on UWB according to an embodiment of the present invention. [Figure 4] This is a diagram of sampling according to an embodiment of the present application. [Figure 5] This is a diagram illustrating the relationships between time blocks, time units, and time subunits according to an embodiment of the present invention. [Figure 6] This diagram shows the relationship between a sensing block, a sensing ground, and a sensing slot according to an embodiment of the present invention. [Figure 7a] This is a diagram of a sensing procedure according to an embodiment of the present invention. [Figure 7b] This is a diagram of a sensing procedure according to an embodiment of the present invention. [Figure 7c] This is a diagram of a sensing procedure according to an embodiment of the present invention. [Figure 8] This figure shows the simulation results according to the embodiment of the present application. [Figure 9] This is a diagram showing the structure of a communication device according to an embodiment of the present invention. [Figure 10] This is a diagram showing the structure of a communication device according to an embodiment of the present invention. [Figure 11] This is a diagram showing the structure of a communication device according to an embodiment of the present invention. [Figure 12a] This figure illustrates the execution of feedback by using the earliest arrival route as the reference, according to an embodiment of the present invention. [Figure 12b] This figure illustrates the execution of feedback by using the earliest arrival route as the reference, according to an embodiment of the present invention. [Figure 12c]This figure illustrates the implementation of feedback by using the strongest arrival path as a reference, according to an embodiment of the present invention. [Figure 12d] This figure illustrates the execution of feedback by using the earliest arrival route as the reference, according to an embodiment of the present invention. [Modes for carrying out the invention]

[0053] To further clarify the purpose, technical solution, and advantages of this application, this application is described further with reference to the attached drawings.

[0054] The terms “first,” “second,” and so on in the specification, claims, and accompanying drawings of this application are used solely to distinguish between different objects and not to indicate a particular order. Furthermore, terms such as “includes,” “has,” and any other variations thereof are intended to cover non-inclusive inclusions. For example, a process, method, system, product, or device comprising a series of steps or units may, instead, optionally include further steps or units not listed, or may optionally include other steps or units specific to those processes, methods, products, or devices.

[0055] The “embodiments” described herein mean that certain features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The phrase “embodiments” appearing in various places in the specification does not necessarily refer to the same embodiment, nor are they exclusive, independent, or arbitrary embodiments. The embodiments described herein may be combined with other embodiments, as can be explicitly and implicitly understood by those skilled in the art.

[0056] In this application, “at least one (item)” means one or more, “multiple” means two or more, “at least two (items)” means two or three or more, and “and / or” is used to indicate an association between related objects, indicating that three relationships may exist. For example, “A and / or B” could mean that only A exists, only B exists, or both A and B exist. A and B may be singular or plural. The letter “ / ” 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 could mean 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 protocols, such as the 802.15.4a protocol, the 802.15.4z protocol, the 802.15.4ab protocol, or future generations of the UWB WPAN standard. The method provided herein may further 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, and is applicable to devices in Vehicle to X, nodes in the Internet of Things, and sensors in the Internet of Things (IoT), such as smart cameras, smart remote controls, and smart water meters in smart homes, and sensors in smart cities. The method provided in this application is also applicable to LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, universal mobile telecommunications systems (UMTS), worldwide interoperability for microwave access (WiMAX) communication systems, long-term evolution (LTE) systems, 5th-generation (5G) communication systems, 6th-generation (6G) communication systems, and the like.

[0058] UWB is a new communication technology that transmits data using narrow, non-sinusoidal impulses at the nanosecond level. Because modulation is performed on impulses with very sharp rise and fall times, UWB occupies a wide spectral range, resulting in signals with a bandwidth of gigahertz (GHz). The bandwidth used by UWB generally exceeds 1 GHz. UWB systems do not need to generate a sinusoidal carrier signal and can transmit impulse sequences directly. Therefore, UWB systems have a wide spectrum and low average power. UWB wireless communication systems have advantages such as strong multipath resolution, low power consumption, and high security. This helps coexist with other systems, thereby improving spectral utilization and system capacity. Also, for short-range communication applications, the transmission power of UWB transmitters is generally lower than 1 mW (milliwatt). Theoretically, the interference generated by UWB signals is equivalent to white noise with only one broadband. This promotes excellent coexistence between ultra-wideband communication and existing narrowband communication. Therefore, UWB systems and narrowband (NB) communication systems can operate simultaneously without interfering with each other. The method provided herein can be implemented by communication devices within a wireless communication system. In a communication system, a module implementing UWB system functionality may be called a UWB module (for example, it may be configured to transmit UWB pulses), and a module implementing a narrowband communication system may be called a narrowband communication module. The UWB module and the narrowband communication module may be different devices, chips, etc. This is not limited to embodiments of the present application. Indeed, the UWB module and the narrowband communication module may, alternatively, be integrated into a single device or chip. Implementation of the UWB module and the narrowband communication module in a communication device is not limited to embodiments of the present application.

[0059] Embodiments of this application are described primarily by using WPAN as an example, and in particular by using the network used in the IEEE 802.15 series of standards as an example. However, as will be understood by those skilled in the art, various aspects of this application may be extended to other networks using various standards or protocols, such as wireless local area networks (WLAN), Bluetooth, high-performance radio LAN (HIPERLAN) (a wireless standard similar to the IEEE 802.11 standard and mainly used in Europe), wide area networks (WAN), or other networks currently known or to be developed in the future. Accordingly, various aspects provided in this application are applicable to any suitable wireless network, regardless of the coverage used and the wireless access protocol used.

[0060] The methods provided herein may be implemented by communication devices within a wireless communication system. These communication devices may be devices within a UWB system. For example, communication devices may include, but are not limited to, communication servers, routers, switches, bridges, computers, mobile phones, etc. Other examples include a central control point, such as a personal area network (PAN) or PAN coordinator. Still other examples 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 similar devices with wireless communication capabilities. Examples are not listed herein. Still other examples include a chip, which may be located in communication servers, routers, switches, user terminals, etc. Examples are not listed herein.

[0061] For example, Figures 1a and 1b are diagrams of the architecture of a communication system according to an embodiment of the present invention. Figure 1a shows a star topology structure according to an embodiment of the present invention, and Figure 1b shows a point-to-point topology structure according to an embodiment of the present invention. As shown in Figure 1a, in a star topology, one central control mode can communicate data with one or more other devices. As shown in Figure 1b, in a point-to-point topology structure, data communication can occur between different devices. In Figures 1a and 1b, both full-function devices and reduced-function devices may be understood as communication devices as shown in the present invention. 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 either does not have a coordinating function or has a lower communication rate than a full-function device. The PAN coordinator shown in Figure 1b is just one example, and it is understood that the remaining three fully functional devices shown in Figure 1b can also be used as PAN coordinators, but these are not shown individually here.

[0062] The full-function and reduced-function devices described herein are merely examples of communication devices, and it should be understood that any communication device capable of implementing the method of feeding back sensing measurement results based on UWB provided herein falls within the scope of protection of this application. Sensing initiators, sensing responders, etc., described below may be full-function devices or reduced-function devices, but are not limited thereto.

[0063] For example, the communication device shown in the embodiments of the present application may include a sensing initiator, a sensing responder, or a sensing requester (or 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 avoids the sensing procedure, the sensing responder may be a party that responds to a party that initiates the sensing procedure. For example, the sensing initiator may be the transmitter of a UWB signal, and the sensing responder may be the receiver of a UWB echo signal. In another example, the sensing initiator may be the receiver of a UWB echo signal, and the sensing responder may be the transmitter of a UWB signal. The sensing requester can be understood as a party that initiates a sensing request to the sensing initiator. Since a UWB transmitted by a sensing initiator must first arrive at the target and then at the sensing responder (for example, a UWB signal arrives at the sensing responder after being reflected or scattered by the target), it can be understood that if a UWB signal is transmitted by a sensing initiator, the signal received by the sensing responder may be called a UWB echo signal. For simplicity of description, it can be understood that UWB signals and UWB echo signals may be collectively referred to as UWB signals below and will not be distinguished. The UWB signals shown in this application may be collectively referred to as sensing signals, UWB pulses, etc. It can be understood that a single sensing packet shown below may contain one or more UWB pulses (or UWB signals).

[0064] Based on the sensing initiator, sensing responder, and sensing requester shown above, embodiments of the present invention provide the following six scenarios. Figures 2a and 2b can be understood as sensing scenarios based on one sensing responder, for example, called bistatic sensing. Figures 2c and 2d can be understood as sensing scenarios based on multiple sensing responders, for example, called multistatic 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. Figures 2e and 2f can be understood, for example, as sensing scenarios based on the participation of a sensing initiator, a sensing responder, and a sensing requester, which are referred to as sensing by proxy.

[0065] As shown in Figure 2a, the sensing initiator is the receiver of the UWB echo signal, so the sensing initiator can obtain sensing measurement results and target-related information based on the UWB echo signal. Therefore, feedback information does not need to be transmitted between the sensing initiator and the sensing responder via the air interface. As shown in Figure 2b, the sensing initiator is the transmitter of the UWB signal, and the sensing responder is the receiver of the UWB echo signal, so the sensing initiator needs to obtain target-related information from the feedback information transmitted by the sensing responder. As shown in Figure 2c, all of the multiple sensing responders are transmitters of the UWB signal. Similarly, feedback information does not need to be transmitted between the sensing initiator and the multiple sensing responders via the air interface. However, in the scenario shown in Figure 2d, the sensing initiator needs to obtain feedback information from multiple sensing responders. As shown in Figure 2e, a sensing requester can send a sensing request to an initiator, the sensing responder is the sender of the UWB signal, and the sensing initiator is the receiver of the UWB echo signal. After receiving feedback information, the sensing initiator needs to send feedback to the sensing requester via the air interface. As shown in Figure 2f, a sensing requester sends a sensing request to a sensing initiator, the sensing initiator is the sender of the UWB signal, and the sensing responder is the receiver of the UWB echo signal. After receiving the feedback signal, the sensing responder first needs to send feedback to the sensing initiator via the air interface. Then, the sensing initiator sends feedback to the sensing requester via 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. 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 a method of feeding back sensing measurement results based on UWB, the format of the feedback information may 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 temporal similarity and spatial interlayers.

[0070] In view of this, the present invention 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 interlayers of parameters within 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 invention.

[0071] The method shown in Figure 3 can be applied to transmitters and receivers. A transmitter can be understood as the end that transmits control information, and a receiver can be understood as the end that receives control information. Alternatively, a transmitter can be understood as the end that receives feedback information, and a receiver can be understood as the end that transmits feedback information. For example, a transmitter may include a full-function device, and a receiver may include a reduced-function device. Another example is a transmitter including a reduced-function device, and a receiver including a reduced-function device. Another example is a transmitter including a reduced-function device, and a receiver including a full-function device. Another example is a transmitter and receiver both being full-function devices. For example, a transmitter may include a sensing initiator shown in Figures 2b and 2d, a receiver may include a sensing responder shown in Figures 2b and 2d, and a CIR parameter provider is a sensing responder shown in Figures 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 yet 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 yet 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 Figure 2f, the receiver may include a sensing responder shown in Figure 2f, and the CIR parameter provider is a sensing responder shown in Figure 2f. The transmitters and receivers listed based on Figures 2b, 2d, 2e, and 2f are merely examples, and it should be understood that any apparatus capable of carrying out the methods provided in the embodiments of this application is within the scope of protection.Accordingly, the transmitters and receivers described above should not be construed as limitations on the embodiments of this application. It can be understood that the methods provided in the embodiments of this application are described by using transmitters and receivers. However, other devices may be present in the information transmission process of the transmitters and receivers. For example, a transfer device may be used to transfer information between the transmitters and receivers. Thus, the mutual transfer of information in this application may be carried out by using technical means that can be completed by those skilled in the art, and other devices other than transmitters and receivers are not limited in this application.

[0072] Before describing the method shown in Figure 3, the sampling unit and sampling points in the embodiment of this application will be described in detail below.

[0073] Figure 4 is a diagram of sampling according to an embodiment of the present invention. Figure 4 shows different taps obtained by performing sampling based on one sensing snapshot. In Figure 4, the horizontal coordinate can be understood as the delay from transmission time to reception time, with the unit of delay being nanoseconds (ns). The vertical coordinate can be understood as path loss information, with the unit of path loss information being decibels (dB). Path loss information can be understood as information obtained based on the attenuation of the UWV 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 Figure 4 is determined based on the sum of the squares of the real and imaginary parts of the path loss. As shown in Figure 4, the method for calculating the vertical coordinate is 10 × log10(Re 2 +Im 2) - may be the transmitted signal power, where Re can be understood as the real part of the received signal (the received signal is sampled to form a tap), and Im can be understood as the imaginary part of the received signal. This should not be construed as a limitation to embodiments of the present application. Taps shown in embodiments of the present application may carry delay and path loss information, or taps may correspond to both path loss information and delay. In general, the relationship between snapshots and taps can be understood as follows: a provider of feedback information (or a generator of feedback information, i.e., a communication device that generates feedback information) may perform sampling based on parameters acquired in a snapshot to acquire multiple taps. It should be understood that Figure 4 merely shows an example in which a tap carries delay and path loss information. Optionally, one type may further carry ZOA, AOA, and / or similar (not shown in Figure 4).

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

[0075] Optionally, the number of taps included in a single snapshot may be determined based on a sampling threshold (e.g., -160 dB as shown in Figure 4). Optionally, if no sampling threshold is set, the duration corresponding to a single tap may be determined alternatively 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 a single snapshot is not limited in the embodiments of this application. Similarly, the number of sensing packets transmitted by a sensing initiator or sensing responder is not limited in the embodiments of this 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 CIR parameter information fed back in the feedback information is not limited in the embodiments of this application. In other words, the number of non-reference sampling units shown below is not limited in the embodiments of this 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 illustrative purposes in the following descriptions of this application, but should not be construed as limitations on embodiments of this application.

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

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

[0079] The control information includes first control information, which instructs the sensing measurement results to be fed back in a threshold-based feedback manner. The control information may be used to control how the sensing measurement results are fed back. Optionally, the control information may be further used to control the feedback period of the sensing measurement results. Alternatively, the control information can 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 may be fed back in the form of CIR parameter information. For example, the control information may be contained 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 in the embodiments of this application.

[0080] The sensing measurement results can be understood as the original CIR parameters (or uncompressed CIR parameters, or one or more taps obtained by sampling a snapshot) obtained based on the sensing packet (the CIR parameters shown in Table 8a below refer to uncompressed CIR parameters). The sensing packet may contain one or more UWB pulses (or referred to as UWB signals, sensing signals, etc.). In other words, based on the sensing packet, a 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. The delay may be the delay relative to the UWB pulse transmission time, etc. Reference standards for delay are not limited in the embodiments of this application.

[0081] In possible implementations, the first control information includes information about a first threshold, which is used to determine whether the sensing measurement results should be fed back to one or more non-reference sampling units, based on the sensing measurement results at the reference sampling unit. In other words, the first threshold is a threshold used to determine whether the sensing measurement results should be fed back to one or more non-reference sampling units. For a description of the first threshold, see the following description of the compression mode. Further details are not provided here.

[0082] For example, the first threshold shown in the embodiments of this application may include any one of the high threshold, normal threshold, low threshold, and lower threshold shown in Table 2. As shown in Table 2, when the value of the field in which the first threshold is located is 00, it indicates that the first threshold is a high threshold; when the value of the field in which the first threshold is located is 01, it indicates that the first threshold is a normal threshold; when the value of the field in which the first threshold is located is 10, it indicates that the first threshold is a low threshold; or when the value of the field in which the first threshold is located is 11, it indicates that the first threshold is a lower threshold. It should be understood that the correspondence between the value of the field in which the first threshold is located and the description shown in Table 2 is merely an example and should not be interpreted as a limitation to the embodiments of this application. The high threshold, low threshold, and lower threshold shown in Figure 2 are relative to the normal threshold. The high threshold, normal threshold, low threshold, and lower threshold are simply classifications. The thresholds may be further classified, for example, into 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] Note that the amacCirDifferenceThres shown in Table 2 can be understood as the MAC constant. The specific value of the MAC constant may be defined by a standard, indicated by the transmitter, etc. This is not limited to the embodiments of this application. For example, the MAC constant may be 5 × 10⁻⁶ -4 This is equivalent to [the given expression]. It can be understood that the MAC information shown in the embodiments of the present application may be the same for all targets, or different targets may have different MAC information. This is not limited to the embodiments of the present application.

[0084] In possible implementations, the value of the first threshold may be directly proportional to the target's radar cross-section (RCS). For example, if the target's RCS 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 target's RCS 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 should be understood that large and small are relative to each other. 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, e.g., the low threshold or lower threshold, so that the receiver can feed back the sensing measurement results more comprehensively and in detail. If the transmitter, based on the acquired sensing measurement results, determines that the target's RCS is greater than a certain threshold, the first threshold may be set to a large value, e.g., greater 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 for adults is greater than that for pets. Because the first threshold value is greater, the sensing results from 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 the sensing results from some non-reference sampling units are not fed back, the transmitter can still use the sensing results from the reference sampling unit as the unfeedback sensing results from the non-reference sampling unit. In other words, the first threshold value is updated based on the target's RCS without affecting the transmitter's acquisition of target-related information. This effectively reduces the signaling overhead of CIR parameter information.

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

[0086] As shown in Table 3, using a fixed or variable number of sampling points as a unit means that, when it is determined based on a first threshold whether sensing measurement results should be fed back in a non-reference sampling unit, a fixed number of sampling points (or a variable number of sampling points) can be used as a unit to measure whether sensing measurement results should be fed back in a unit. As shown in Table 4, when sensing measurement results in a unit are fed back, the sensing measurement results in 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 in the unit and the sensing measurement result for the same delay in the reference sampling unit), discrimination (differentiation of the same parameter) is performed on the sensing measurement result in the reference sampling unit (e.g., a parameter) and the sensing measurement result for the corresponding delay in the unit (e.g., the same parameter), and the differential sensing measurement result is included in the CIR parameter information. Tables 4 and 3 can be understood as tables of compression modes described in different ways, with Table 4 being a more detailed description of the compression modes based on Table 3. [Table 4]

[0087] For simplicity, the sensing measurement results at a unit will be referred to as a group of sensing measurement results below. In other words, a certain number of sampling points are used as the unit, and the sensing measurement results at a sampling unit may be grouped to obtain multiple groups of sensing measurement results. If the sensing measurement results include path loss information and delay, multiple groups of sensing measurement results may also be referred to as multiple groups of taps, and the number of taps in each group of taps may be constant or variable. Indeed, the sensing measurement results may further include AOA and ZOA (if two or more antennas are used when the sensing measurement results are measured). In this case, even if multiple groups of sensing measurement results 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] Since the sensing measurement results at the non-reference sampling unit may be greater than, or less than, the sensing measurement results at the reference sampling unit for the corresponding delay, the differential sensing measurement results may include both positive and negative values. Therefore, the transmitter can accurately restore the sensing measurement results at the non-reference sampling unit based on the differential sensing measurement results and the sensing measurement results at the reference sampling unit.

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

[0090] In the example, if the difference between each tap in the group and the tap with the same delay in the reference sampling unit is less than the first threshold, then none of the taps in the group are fed back, or none of the sensing results in the group (e.g., sensing results include path loss information and delay, or may further include AOA and ZOA) are fed back, or none of the differences between each tap in the group and the tap with the same delay in the reference sampling unit are fed back. In other words, if it is decided not to feed back the sensing results in a group, the transmitter can still estimate the sensing results in the group by using the sensing results in the reference sampling unit, even if the CIR parameter information does not contain information about the sensing results in the group (e.g., the sensing results in the group can be replaced by the sensing results in the reference sampling unit). This effectively reduces signaling overhead without affecting the transmitter's acquisition of target-related information.

[0091] In embodiments of the present application, the “difference” described as the difference between each tap in a group and a tap of the same delay in the reference sampling unit may be the difference between path losses, or the difference between the real parts of path losses, or the difference between the imaginary parts of path losses, or Re 2 +Im 2 It can be understood that the difference may be determined based on (as shown in Figure 4). Examples are not listed here. Specific methods for calculating the difference are not limited to the embodiments of this application.

[0092] It should be noted that while the transmitter estimates the group sensing measurement results by using the sensing measurement results from the reference sampling unit, the accuracy of the information acquired by the transmitter related to the target is not affected. The reason for this is as follows: even if the sensing measurement results are fed back in 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 this application, and the error resulting from replacing the group sensing measurement results with the sensing measurement results from the reference sampling unit is smaller than the error that occurs during the quantization process. Therefore, the accuracy of the information acquired by the transmitter related to the target is not reduced, and the signaling overhead can be further reduced.

[0093] In other examples, if the difference between a tap in a group and a tap with the same delay in the reference sampling unit is greater than a first threshold, then the differences between all taps in the group and taps with the same delay in the reference sampling unit are fed back, or the differences between all sensing measurements in the group (i.e., the differences between taps in the group and taps with the same delay in the reference sampling unit) are fed back. In other words, if the difference between a tap in a group and a tap with the same delay in the reference sampling unit is greater than a first threshold, it may be decided that all sensing measurements in the group are fed back. Since the sensing measurements that need to be fed back are fed back using the finite difference method, signaling overhead can be effectively reduced.

[0094] In further embodiments, if the difference between a small number of taps in a group and a tap with the same delay in the reference sampling unit is greater than a first threshold, only a small number of taps in the group may be fed back. For example, if the number of taps in a group whose difference is greater than the first threshold is 5 or less, only 5 taps may be fed back, and the other taps in the group may not be fed back. If it is decided to feed back the sensing measurement results in a group, a small number of taps in that group (or the sensing measurement results corresponding to a small number of taps) are fed back using the difference method, effectively reducing the signaling overhead of the CIR parameter information.

[0095] For example, the sampling unit shown in Figure 4 is used as an example. It is assumed that the sampling unit shown in Figure 4 is a non-reference sampling unit. For example, the difference between the path loss at horizontal coordinate 31ns and the path loss at horizontal coordinate 31ns in the reference sampling unit is compared to a first threshold, and if the difference is less than or equal to the first threshold, then all taps in the group where horizontal coordinate 31ns is located do not need to be fed back (i.e., path loss and delay are not fed back if the sensing measurement results include path loss and delay), or the sensing measurement results corresponding to each tap in the group where horizontal coordinate 31ns is located are not fed back (i.e., path loss, delay, AOA, and ZOA are not fed back if the sensing measurement results include path loss, delay, AOA, and ZOA), and so on.

[0096] It can be understood that the specific number of taps included in a group is not limited in the embodiments of the present application. In the embodiments of the present application, if the difference shown above is equal to the first threshold, it is not limited whether the sensing measurement results in a group are fed back. In other words, if the difference between a tap in a group and a tap of the same delay in the reference sampling unit is equal to the first threshold, then the difference between all taps in the group and taps of the same delay in the reference sampling unit may or may not be fed back, or the difference between all taps in the group and taps of 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 a communication device that receives the control information.

[0098] In the embodiments of this invention, there may be one or more communication devices, i.e., receivers, that receive 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 based on the control information in order to feed back the sensing measurement results acquired by each receiver. This effectively improves communication efficiency.

[0099] For example, Table 5 shows the contents of control information according to embodiments of the present application. The contents shown in Table 5 can be understood as information elements (IEs) within the control information. Whether the control information includes other IEs is not limited in embodiments of the present application. For example, the IEs shown in Table 5 may be called sensing CIR feedback control IEs. As shown in Table 5, sensing CIR feedback control IEs may include an element ID (also called an element ID), an address size specifier, a responder number, and first control information. The first control information may also be called a CIR feedback control parameter. The contents of the first control information may be shown in Table 6. As shown in Table 6, the device address can be understood as the receiver address, 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 compression 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 in which the address size specifier is located is 0, it may indicate that the device address uses a short 2-byte address, or if the value of the field in which the address size specifier is located is 1, it may indicate that the device address uses an extended 8-byte 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 the 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 the first threshold and compression mode. For example, as shown in Table 6, the device address may represent the address of the responder device. See Table 2 for the CIR feedback threshold values. The CIR reference information request can be understood as a request for the 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 feed back the sensing measurement results (which may also be called 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 feed back the sensing measurement results at the reference sampling unit. See Table 3 or Table 4 for the compression mode values. Further details are not provided here again.

[0101] It should be noted that if the target is moving at a high speed, the sensing measurement results at the reference sampling unit may be updated more frequently, and if the target is moving at a low speed, the frequency of updating the sensing measurement results at the reference sampling unit may be reduced. Specifically, if the transmitter recognizes that the target is moving at a speed 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 is moving at a speed slower than a 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 is moving at a high speed, the original CIR parameters also change significantly. Since 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., differential information, as shown in the embodiments of this application, becomes smaller. In this way, the differential information is represented by using a small number of bits.

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

[0103] Feedback information includes CIR parameter information, which is obtained by processing sensing measurement results based on first control information. CIR parameter information refers to information obtained by processing the original CIR parameters based on first control information. For example, CIR parameter information may be information obtained by performing quantization processing on the original CIR parameters based on first control information. As another example, CIR parameter information may be information obtained by performing quantization and compression processing on the original CIR parameters based on first control information.

[0104] After receiving feedback information, the receiver may obtain information such as the distance, 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 embodiments of the present application. For example, after receiving feedback information, the receiver may parse target-related parameters to obtain information about one or more targets.

[0105] In possible implementations, the feedback information further includes information related to the CIR parameter information, which is as follows: The system 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 at the reference sampling unit are stored.

[0106] For example, the transmitter can know the total number of sampling points corresponding to the CIR parameter information obtained by the transmitter, as it includes the number of sampling units corresponding to the CIR parameter information and the number of sampling points contained in each sampling unit. Optionally, if grouping is performed in units of a certain number of sampling points, the transmitter can further obtain the total number of groups. For example, the transmitter can accurately distinguish sensing measurement results obtained by different antennas from the CIR parameter information, as it includes the number of antennas used to measure sensing measurement results. For example, the transmitter can refer to the information indicating whether sensing measurement results at a reference sampling unit (which may also be called reference information, CIR reference information, etc.) are stored, and in subsequent control information, it can instruct the transmitter to update the sensing measurement results at the reference sampling unit (or to update the CIR reference information) by referring to this information.

[0107] For example, each of the pieces of information shown above may exist in the feedback information in the form of fields. The contents shown in Table 7 may be included in the CIR feedback report IE (CIR feedback report IR) within the feedback information. Whether the feedback information includes other IEs is not limited in the embodiments of this application. [Table 7-1] [Table 7-2]

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

[0109] Note that the local CIR reference status value 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 being asked to update its 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 the actual requirements. In the embodiments of this application, the addition of a CIR reference information request field and a local CIR reference status field in a "handshake" format improves communication reliability and improves communication efficiency for both communication parties.

[0110] For a description of the CIR feedback direction parameters, please refer to Tables 8a to 8d. It should be understood that Tables 8a to 8d are illustrated by using path loss information as an example. However, when the receiver feeds back CIR parameter information, delay, AOA, ZOA, etc., may be included as well, but these are not shown individually 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 should be understood that the field values ​​and their meanings shown in Table 7 are illustrative examples and should not be interpreted as limitations on embodiments of the present invention. For example, the provider address size specifier field and the requester address size specifier field may be described as follows: a value of 1 indicates that a 2-byte short address is used, and a value of 0 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, differ from those in Table 3 or Table 4. Examples are not listed here.

[0112] In possible implementations, when the compression mode value 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 a tap obtained by sampling parameters taken in a snapshot, and the tap does not need to be determined by using a first threshold. [Table 8a]

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

[0114] In possible implementations, the feedback information further includes information about the first bitmap, where each bit in the first bitmap indicates whether the sensing measurement result should be fed back in the corresponding group. In other words, after the sensing measurement results are grouped, whether the sensing measurement result should be fed back in the corresponding group can be indicated in bitmap mode. For example, if the value of a bit in the first bitmap is 1, it indicates that the sensing measurement result in the group corresponding to that bit will not be fed back. Also, the difference between the sensing measurement result in the corresponding group and the sensing measurement result of the same delay in the reference sampling unit is less than the first threshold. As another example, if the value of a bit in the first bitmap is 0, it indicates that the sensing measurement result in the group corresponding to that bit will be fed back. Also, the difference between at least one tap in the corresponding group and the tap of the same delay in the reference sampling unit is greater than the first threshold (or, more precisely, the difference between at least one tap in the corresponding group and the corresponding tap in the reference sampling unit is greater than the first threshold).

[0115] For example, if the compression mode value 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 may 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, bit length of the first bitmap = number of taps in each snapshot / number of taps in each group.

[0117] The reference sampling units shown in Table 8b are shown using Snapshot 1 as an example, but it should be understood that this should not be interpreted as a limitation to embodiments of the present application. For example, the reference sampling units may alternatively be Snapshot 2, Snapshot 3, etc., that is, the CIR reference information may be the CIR parameters of Snapshot 1, or the CIR parameters of other snapshots. Optionally, the N_tap taps included in Snapshot 1 shown in Table 8b may or may not be grouped into units of a certain number of taps. This is not limited to embodiments of the present application. The CIR parameters for Snapshot 1 shown in Table 8b are shown using an example where no grouping is performed. Therefore, Table 8b shows the N_tap taps in Snapshot 1 individually. In the CIR parameters for Snapshot 2 shown in Table 8b, grouping must be performed into 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 that includes CIR reference information (i.e., sensing measurement results at the reference sampling unit). 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 that had CIR reference information may be used as the CIR reference information in the current feedback information. If the current feedback does not require CIR reference information (i.e., the CIR parameter information does not include CIR reference information), snapshot 1 will also feed back the sensing measurement results in the manner of other snapshots, that is, it will feed back the sensing measurement results in the snapshot in a different way. It should be understood that the explanation of CIR reference information is also applicable to Tables 8c and 8d, and that further details will not be described again below.

[0119] In possible implementations, if the compression mode includes a compression mode that uses a variable number of sampling points as units, the feedback information further includes: the number of groups in one sampling unit, and the start and end sampling points within each group. Alternatively, the feedback information further includes: the number of groups in one sampling unit, the start sampling point within each group, and the number of sampling points within each group. In other words, the above information is included so that, when the feedback information is acquired, the transmitter is aware of the grouping information of the receiver's sensing measurement results and can immediately restore the original CIR parameters.

[0120] For example, if the compression mode value 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 where one snapshot is divided into M groups, where M is a positive integer. When a snapshot is sampled, the delay of each tap within 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 CIR reference information. The grouping method for snapshot 1 shown in Table 8c is also applicable to the grouping methods for the remaining M-1 snapshots. In other words, it is assumed that the grouping method for all snapshots remains constant within one feedback information. Alternatively, the tap grouping method for snapshots within the current feedback information may be the same as the tap grouping method for CIR reference information within the previous feedback information that had CIR reference information.

[0122] Optionally, the feedback information further includes information about the 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 taps of the same delay in the reference sampling unit is greater than a first threshold, then only that small number of taps in the group may be fed back. In this case, the value of the bit in the first bitmap corresponding to the group is 1, meaning that at least one of the differences between all the taps in the group and the corresponding taps in the reference sampling unit is greater than a first threshold. Each bit in the second bitmap may indicate whether the sensing measurement result of the corresponding tap in the group should be fed back. The bit length of the first bitmap is determined based on the total number of groups, or the bit length of the first bitmap may 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 may be determined based on the compression mode. For example, in a compression mode that uses a fixed number of sampling points as units, the bit length of the second bitmap may be a fixed amount. As another example, in a compression mode that uses a variable number of sampling points as units, the bit length of the second bitmap may be determined based on the number of taps in each group during the grouping of each snapshot. The second bitmap may 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, and the signaling overhead can be further reduced. It should be understood that the second bitmaps shown in the embodiments of this application are applicable to Tables 8b and 8c. Table 8c is used below as an example to illustrate the second bitmap and should not be construed as a limitation to the embodiments of this application, for example, the second bitmap may be added after adaptive modifications according to Table 8b. Further details are not described herein.

[0123] For example, if the compression mode value is 10, the CIR parameter information may be shown in Table 8d. For an explanation of Table 8d, please refer to Table 8c, etc. Further details are not provided here. [Table 8d-1] [Table 8d-2] [Table 8d-3]

[0124] It can be understood that groups corresponding to bits whose bit value is 1 in the first bitmap may have a second bitmap. Thus, Table 8d is simply an example where the bit values ​​corresponding to groups 1 and M in snapshot 2 within the first bitmap are 1. However, this should not be construed as a limitation to embodiments of the present application.

[0125] It can be understood that the CIR parameter information shown in Tables 8a to 8d in this application may indicate path loss information in the form of amplitude and phase, or in the form of in-phase and orthogonal components. This is not limited to the embodiments of this application. Optionally, the feedback information may further include information about the data mode indicating path loss information. For example, if the value of the field where the data mode indicating path loss information is located is 0, it indicates that the path loss information is fed back in the form of in-phase and orthogonal components (which can also be said to mean that the path loss information is fed back in the form of real and imaginary parts). If the value of the field where the data mode indicating 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 path loss information, thereby diversifying the format of path loss information and allowing different feedback formats for sensing information to be effectively selected for different application scenarios. For example, if the bit width (i.e., the length of bits occupied) of the path loss information is small, the accuracy of feedback based on amplitude and phase will be higher.

[0127] Note that if the feedback information includes the second bitmap, it does not necessarily have to include the first bitmap. For example, if all bits in the second bitmap are 0, it may indicate that the sensing measurement results for the group corresponding to the second bitmap will not be fed back. If all bits in the second bitmap are 0, the transmitter can continue to read the second bitmap corresponding to the subsequent group. For example, if one or more bits in the second bitmap are 1, it indicates that the sensing measurement results for the group corresponding to the second bitmap will be fed back. In other words, the transmitter can know, based on the second bitmap, whether the group corresponding to each second bitmap will provide feedback on the sensing measurement results.

[0128] Indeed, to help the transmitter know that the feedback information includes a first bitmap and a second bitmap, the feedback information may optionally include further information indicating the bitmaps contained in the feedback information; that is, the information may indicate that the feedback information includes a first bitmap, a second bitmap, or both the first and second bitmaps. Further details are not provided here.

[0129] Table 9 shows a comparison between the no-compression mode and the compression mode that uses a fixed number of sampling points as a unit according to the embodiments of the present application. A moving chair is selected as the sensing target in an office environment. The above two compression modes are used to report the sensing measurement results at 10 snapshots. As shown in Table 9, when the compression mode is no compression, the sensing measurement results at 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 that uses a fixed number of sampling points as a unit (in this simulation, each group of taps includes only one tap, both the real and imaginary parts of the reference tap are represented by 12 bits, and the real and imaginary differences of the differential information are represented by 8 bits), when the first threshold is 10 -5 (i.e., 1e -5 ), the sensing measurement results at 10 snapshots require a length of 985 bytes, and the compression ratio is 0.3283. Or when the first threshold is 5×10 -5 (i.e., 5e -1 ), the sensing measurement results at 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 feedback the CIR parameter. From Table 9, it can be seen that according to the method provided in the present application, the signaling overhead of the CIR parameter is effectively reduced. [Table 9]

[0130] Figure 8 shows the simulation results according to an embodiment of the present invention. In the simulation diagram (the simulation conditions are the same as those in Table 9), lines containing white circles indicate that no compression was performed (No compression shown in Figure 8), and lines containing black asterisks indicate a compression mode in which a fixed number of sampling points are 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 uncompressed, the x-axis represents the bit width of the real and imaginary parts, and can also be understood as the bit width of the in-phase component and quadrature component (IQ bit width). When a compression mode is used that samples a fixed number of sampling points, the x-axis 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). 12 bits are used for the reference information in this solution. The y-axis represents the maximum quantization error. From Figure 8, when 12-bit quantization is used, the maximum quantization error in the uncompressed solution is 2e -5 On the other hand, 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 It can be seen that this is the case. Therefore, in this solution, the feedback overhead is significantly reduced without increasing the quantization error.

[0131] In the embodiments of this invention, the transmitter transmits control information to the receiver, thereby allowing the receiver to process the original CIR parameters based on the control information, for example, to acquire CIR parameter information in a threshold-based feedback manner. In other words, CIR parameter information is acquired in a threshold-based feedback manner. The sensing measurement results are processed to acquire CIR parameter information (for example, processed in a threshold-based feedback manner), and then the CIR parameter information is fed back, effectively reducing signaling overhead. The receiver also performs processing based on the control information transmitted 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 Figure 3, in possible implementations, the control information may further include second control information, which may include information indicating the number of time subunits contained in one time unit. A time unit can be understood as the duration of interaction between one control information and one feedback information. Alternatively, the process by which a receiver completes one independent sensing measurement and feedback information reporting may be called a time unit. Alternatively, a time unit may be understood as the duration from when a transmitter initiates a sensing procedure to when it acquires feedback information. For example, one time unit may contain multiple time subunits. In other words, multiple time subunits may form one time unit. For example, one time unit may contain T time subunits, where T is a positive integer.

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

[0134] Since the transmitter and receiver may perform multiple sensing procedures, time blocks are further provided in embodiments of the present application. As shown in Figure 5, one time block may contain N time units, where N is a positive integer, and one time unit may contain M time subunits. It may be understood that a time block may also be called 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 embodiments of the present application. For simplicity of description, the sensing block, sensing ground, and sensing slot shown in Figure 6 are used below as examples to describe the method provided in embodiments of the present application. It may be understood that Figure 5 should be referenced for a description of Figure 6.

[0135] For example, a sensing block may be a period of time specifically used for sensing, and each sensing block may be divided into several sensing grounds, each sensing ground may be used to complete one independent sensing measurement and result reporting. Each sensing ground may be divided into several sensing slots, 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, a receiver may perform sensing on a target multiple times in a single sensing ground. Based on the sensing packets, the receiver can obtain information such as path loss information, delay, AOZ, and AOA. It can be understood that each sensing packet may contain one or more UWB pulses.

[0136] For example, the contents of the second control information may be shown in Table 10a. As shown in Table 10a, the second control information may include sensing block duration, sensing ground duration, sensing slot duration, and pulse repetition frequency (PRF). The duration of each sensing slot may be the same, and the duration of each sensing ground may be the same. The durations shown in the embodiments of this application may also be called periods, durations, etc. The number of sensing blocks contained in one sensing ground can be determined by using the sensing block duration and sensing ground duration. As shown in Figure 6, one sensing block may contain N sensing grounds, where N is a positive integer. The number of sensing slots contained in one sensing ground can be determined by using the sensing ground duration and sensing slot duration. As shown in Figure 6, one sensing ground may contain T sensing slots, where T is a positive integer. [Table 10a]

[0137] Referring to the method shown in Figure 3, the sensing measurement results fed back by using the feedback information may be sensing measurement results obtained by the receiver performing sensing on a target in one sensing ground. In other words, what is fed back by using the feedback information may be sensing measurement results obtained in the current sensing ground. The feedback information fed back in the current sensing ground may include sensing measurement results at a reference sampling unit in the current sensing ground. 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 ground. Alternatively, the feedback information fed back in the current sensing ground does not have to include sensing measurement results at a reference sampling unit; for example, sensing measurement results in a reference sampling unit included in the feedback information fed back in a previous sensing ground may be used as reference information for the sensing measurement results fed back in the current sensing ground.

[0138] Referring to the method shown in Figure 3, the sensing measurement results fed back using feedback information may alternatively be sensing measurement results obtained by the receiver performing sensing on the target in multiple sensing grounds. In other words, the receiver may feed back sensing measurement results from multiple sensing grounds using a single piece of feedback information. In this case, the feedback information may or may not include reference information. Further details are not described here.

[0139] Since the transmitter transmits control information for each sensing ground, the second control information may further include information indicating whether the sensing measurement results are fed back in the current sensing ground. Because it is indicated whether the sensing measurement results are fed back in the current sensing ground, the receiver can effectively know whether the sensing measurement results are fed back in the current sensing ground. If the sensing measurement results do not need to be fed back in the current sensing ground, the receiver first stores the sensing measurement results in the current sensing ground in a buffer, and when it receives an instruction that the sensing measurement results need to be fed back, it may feed back the sensing measurement results that have not been fed back to the transmitter in one feedback piece. Accordingly, in Tables 8a to 8d, further indications of sensing grounds may be added, and the leftmost part of Tables 8a to 8d may be replaced with N_tap of CIRs in snapshots N_snapshot in sensing grounds N_round, where N_round indicates the number of sensing grounds, N_snapshot indicates the number of snapshots in each sensing ground, and N_tap indicates the number of taps in each snapshot. It is assumed that each sensing ground contains the same number of snapshots, and each snapshot contains the same number of taps.

[0140] For example, referring to Table 10a and information indicating whether the sensing measurement results are fed back in the current sensing ground, 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 solutions indicate that CIR difference 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 that has reference information is the reference information for the current feedback information. Figure 7b shows the measurement reporting phase when the CIR update indicator is 00. In the feedback information, the difference information indicates the sensing measurement result acquired by the receiver. For example, the CIR parameter information is determined based on the original CIR parameter and the reference information that is in the feedback information and precedes the feedback information.

[0142] For example, if the value of the field where the CIR update indicator is located is 01, both solutions indicate that CIR difference information and the difference will be 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 acquired by the receiver. For example, the CIR parameter information is determined based on the reference information in the feedback information and the original CIR parameters.

[0143] If the value of the field where the CIR update indicator is located is 00 or 01, the corresponding compression mode may include one of the following: threshold-based compression mode, snapshot-based compression mode, or clustering-based compression mode. Further information indicating one of the threshold-based compression mode, snapshot-based compression mode, or clustering-based compression mode may be added to the first control information shown in Table 6. If the added information indicates a threshold-based compression mode, the first control information may be shown in Table 6. If the added information indicates one of the snapshot-based compression mode or clustering-based compression mode, the other contents of the first control information are not limited in the embodiments of this application. For example, if the value of the field where the CIR update indicator is located is 10, both solutions indicate that the CIR is not fed back in the current sensing ground, meaning that sensing measurement results do not need to be fed back in the sensing ground where the control information is located. For example, if the value of the field where 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 ground is a threshold-based compression mode. Thus, the corresponding first control information may be shown in Table 6.

[0144] For example, the compression modes based on snapshots are described as follows:

[0145] For example, a snapshot in any one of one or more sensing grounds that needs to be fed back by one of the antennas in one or more antennas (snapshot 1 of the first antenna in the antennas used when sensing measurement results are measured) may be used as a reference sampling unit, and the parameter information in the reference sampling unit is used as reference information. For example, a receiver receives a UWB signal with multiple antennas and needs to feed back the sensing measurement results in the current sensing ground (e.g., one sensing ground). Therefore, the receiver may use the sensing measurement results in the first snapshot in the local sensing ground that needs to be fed back by the 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, the clustering-based compression modes are described as follows:

[0147] All snapshot CIRs are clustered. For example, path loss information may be clustered based on dynamic range, K-mean, or Density-Based Spatial Clustering of Applications with Noise (DBSCAN), and the specific implementation of clustering is not limited to the embodiments of this application. A tap (i.e., a reference tap) is then selected from each cluster as a reference sampling unit, the sensing measurement results within the reference sampling unit are used as reference information, and the difference between other taps in each cluster (i.e., normal taps) and the tap used as reference information (referring to the difference between the parameters of the corresponding taps) 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] Figure 7a shows the execution of a sensing procedure in a sensing ground according to an embodiment of the present invention. As shown in Figure 7a, in the sensing control phase, the transmitter may transmit control information (which may also be called a sensing control message) to the receiver; in the sensing phase, the transmitter may transmit multiple sensing packets to the receiver; and in the measurement report phase, the receiver may transmit feedback information (which may also be called 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 Figure 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 possible implementations, if the target is moving at a high speed, the receiver may perform feedback more frequently, allowing the transmitter to obtain information about the target in a timely manner. If the target is moving at a low speed, the frequency of feedback of sensing measurements can be reduced. Since the feedback information must be fed back in the last one or more sensing slots within a single sensing ground, the period or feedback frequency of the feedback information is indicated by using the number of sensing slots contained in one or more sensing grounds within 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 more sensing slots there are, the longer the period of the feedback information, or the lower the feedback frequency of the feedback information.

[0150] For example, if the transmitter requests the receiver to provide more frequent feedback of sensing measurement results, the number of sensing slots included within a single sensing ground indicated in the control information will decrease, 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 target change frequency according to a specific detection algorithm, thereby determining the subsequent feedback period of the feedback information according to the detection algorithm after receiving the feedback information.

[0151] For details not described in one of the above implementations, please refer to the other implementations. Further details are not provided here. Furthermore, the above implementations may be combined with each other.

[0152] From the above, it can be seen that the feedback information of the embodiments of the present application includes a first bitmap and / or a second bitmap. Therefore, the first control information may be further understood as indicating that sensing measurement results are to be fed back in bitmap mode. The feedback of sensing measurement results in bitmap mode as shown in the embodiments of the present application may include feeding back differential sensing measurement results in bitmap mode (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 the example, the first control information may include instruction information, which indicates whether the sensing measurement result should be fed back in bitmap mode.

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

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

[0156] In other examples, the first control information does not necessarily have to include instruction information. For example, the first control information may instruct the system to feed back the sensing measurement results in bitmap mode.

[0157] As shown above, the first control information may include information about the first threshold. For example, the first control information may include multiple first thresholds, and after receiving the first control information, the receiver may select one first threshold from the multiple 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 is the thermal noise P of the receiver. n = kTB can be directly proportional, where k is the Boltzmann constant, T is the Kelvin temperature (generally 290K at room temperature), and B is 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 0 or greater.

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

[0159] For example, since feedback information can be used to feed back sensing measurement results in bitmap mode, the first control information may further include bitmap length information and corresponding sampling point position information. For example, the bitmap length information may include the window length (W length ) may include the position information of the corresponding sampling point, and the window offset (W) of the starting position of the window relative to the reference path (also called the reference path position, reference sampling point, etc.) may include the reference path, and the position information of the corresponding sampling point may include the reference path (also called the reference path position, reference sampling point, etc.) offset) (or called offset) is included. 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, for example, Ts = 1 / fs. For example, as shown in Figures 12a, 12b, and 12d, the location of the reference sampling point may include the location of the earliest arrival path, or as shown in Figure 12c, the location of the reference sampling point may include the location of the strongest arrival path. It can be understood that the location of the strongest arrival path may be within or outside the window. This is not limited to embodiments of the present application. In embodiments of the present application, a method for obtaining the earliest arrival path or the earliest arrival path is used as a viable example, and the details are as follows: For example, when two communication parties are performing sensing measurements for the first time, the window length may be greater than or equal to a certain value, so that the receiver knows the approximate location of the strongest arrival path or the earliest arrival path, i.e., it knows prior information. The window may then be continuously adjusted based on prior information, for example, remaining below the value mentioned above. The specific value of the window length is not limited in the embodiments of this application. For example, the window length may be a fixed value, for example, a compression mode using a fixed number of sampling points as units is used (or a fixed number of sampling points are used as feedback). In another example, the window length may be a variable value, for example, a compression mode using a variable number of sampling points as units is used (or a variable number of sampling points are used as feedback). For a specific explanation of the feedback method, please refer to the explanation above. Further details are not provided here.

[0160] For example, if the sensing measurement results are fed back using a windowing method, in the example, if the first control information includes the length of the bitmap and the position information of the corresponding sampling point, the feedback information does not need to include the length information. In another example, if the first control information does not include the length of the bitmap and the position information of the corresponding sampling point, the feedback information may include the length of the bitmap and the position information of the corresponding sampling point. 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 point.

[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, with each group containing M taps. If P is not divisible by N, N may be padded with zeros up 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, where Q is the modulo operation performed on P by N), and then the 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; or if the first control information does not include information about N and P, the feedback information may include information about N and P; or whether the first control information includes information about N and P or not, the feedback information may include information about N and P.

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

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

[0164] In the 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 an unwindowed CIR) is smaller than a 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 further may include AOA and ZOA) is not fed back. In other words, if it is decided not to feed back the sensing measurement result of a tap, it indicates that the amplitude corresponding to the tap is excessively small and has little effect 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. In embodiments of the present application, the statement that a tap is smaller than a first threshold can be understood as follows: the CIR parameter corresponding to the tap is smaller than a first threshold.

[0165] In another example, taps within a snapshot (which may be a windowed CIR or an unwindowed CIR) are grouped into P groups, each containing M taps. If T taps within a group are smaller than a first threshold, the corresponding taps within that group are not fed back, or the sensing results corresponding to the group are not fed back (e.g., the sensing results include path loss information and delay, or may further include AOA and ZOA). In other words, if it is decided not to feed back the sensing results of taps within a group, it indicates that the amplitude corresponding to the group of taps is excessively small and has little effect 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. T may be a positive integer less than or equal to M.

[0166] For example, as shown in Figures 12a and 12b, the feedback information may include a first bitmap, which may indicate whether the sensing measurement results of the corresponding taps within a group should be fed back. For example, the receiver may determine the starting position of a window based on the position of the earliest arrival path and the window offset, and then determine the position of the window based on the window length and the starting position of the window. Taps within a window are taps within a group. As shown in Figure 12a, the first, second, third, fourth, seventh, ninth, and tenth taps within the window are all greater than the first threshold. Therefore, the value of the first bitmap is 1111001011. As shown in Figure 12b, after determining the position of the window, the receiver may further group the taps within the window. For example, two taps may be 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 a windowed or unwindowed CIR) are grouped into P groups, each containing M taps. Two bitmaps are used to represent CIR parameter information. If any tap in a group is greater than a first threshold, the corresponding group is fed back. Furthermore, it is determined which taps in that group are greater than the first threshold, and the corresponding taps in that group are fed back. In other words, if it is decided not to feed back the sensing measurement results of taps in a group, it indicates that the amplitude corresponding to the group of taps is excessively small and has little effect 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 Figure 12d, the value of the first bitmap is 10011, indicating that the receiver provides feedback on the taps in the first, fourth, and fifth groups, while the value of the second bitmap is 111011, individually indicating whether the taps in the first, fourth, and fifth groups are provided feedback.

[0169] For example, the same CIR parameters corresponding to different taps (e.g., loss paths and phases of CIRs or orthogonal and in-phase components of CIRs corresponding to different taps) are quantized using the same bit width, but the corresponding amplitude ranges are different. Therefore, a scaling factor β may 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 may be adaptively modified as shown in Table 13a. [Table 13a]

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

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

[0172] For example, the table corresponding to Table 8d may 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 this application is described below.

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

[0175] Figure 9 is a diagram showing the structure of a communication device according to an embodiment of the present invention. As shown in Figure 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 steps or functions performed by the transmitter in the method embodiments described above.

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

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

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

[0180] It should be understood that the specific descriptions of the transceiver unit and processing unit described in the embodiments of this application are for illustrative purposes only. For specific functions, steps, etc., of the transceiver unit and processing unit, please refer to the method embodiments described above. Details are not described here.

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

[0182] For example, the transceiver unit 902 is configured to receive 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 feedback information based on control information.

[0184] It should be understood that the specific descriptions of the transceiver unit and processing unit described in the embodiments of this application are for illustrative purposes only. For specific functions, steps, etc., of the transceiver unit and processing unit, please refer to the method embodiments described above. Details are not described here.

[0185] For descriptions of control information, feedback information, first control information, second control information, first bitmap, second bitmap, reference sampling unit, etc., in the above embodiments, please refer to the description in the above method embodiments. Details are not described again here.

[0186] The above describes the transmitter and receiver in the embodiments of the present application. The following describes the possible product forms of the transmitter and receiver. It should be understood that any product having the functions of the transmitter in Figure 9, or any product having the functions of the receiver in Figure 9, falls within the scope of protection of the embodiments 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 embodiments of the present application are not limited to those shown.

[0187] In possible embodiments, in the communication device shown in Figure 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 are integrated into a single component, for example, a transceiver. In embodiments of the present application, the processor and the transceiver may be coupled, etc. The method of connecting the processor and the transceiver is not limited in embodiments of the present application. When the above method is performed, the process of transmitting information in the above method may be understood as the process of the processor outputting the above information. When outputting information, the processor outputs the information to the transceiver, and the transceiver transmits the information. After the information is output by the processor, other processing may need to be performed on the information before the information arrives at the transceiver. Similarly, the process of receiving information in the above method may be understood as the process of the processor receiving input information. When the processor receives input information, the transceiver receives the information and inputs it to the processor. Furthermore, 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 Figure 10, the communication device 100 includes one or more processors 1020 and transceivers 1010.

[0189] For example, if a communication 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, if a communication device is configured to perform steps, methods, or functions performed by a receiver, the transceiver 1010 is configured to receive control information from the 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] For descriptions of control information, feedback information, first control information, second control information, first bitmap, second bitmap, reference sampling unit, etc., in the above embodiments, please refer to the description in the above method embodiments. Details are not described again here.

[0192] In each implementation of the communication device shown in Figure 10, the transceiver may include a receiver and a transmitter. The receiver is configured to perform a receiving function (or operation), and the transmitter is configured to perform a transmitting function (or operation). The transceiver is also configured to communicate with other devices / devices through 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 memories 1030 are coupled to the processor 1020. The coupling in the embodiments of the present application may be an indirect coupling or communication connection between devices, units, or modules in electrical, mechanical, or other forms, used for information exchange between devices, units, or modules. The processor 1020 may cooperate with the memories 1030. The processor 1020 may execute program instructions stored in the memories 1030. Optionally, at least one of the one or more memories may be included in the processor.

[0194] In embodiments of this application, the specific connection medium between the transceiver 1010, the processor 1020, and the memory 1030 is not limited. In embodiments of this application, the memory 1030, the processor 1020, and the transceiver 1010 are connected via a bus 1040 in Figure 10. The bus is represented by a thick line in Figure 10. The connection methods of other components are merely examples for illustrative purposes and are not limited to them. Buses may be classified as address buses, data buses, control buses, etc. For simplicity of representation, only a single thick line is used to represent buses in Figure 10, but this does not mean that there is only one bus or only one type of bus.

[0195] In 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, and the like. The processor can implement or perform the methods, steps, and logic block diagrams disclosed in embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, and the like. The steps of the methods disclosed in combination with embodiments of the present application may be performed directly by the hardware processor, or by using a combination of hardware and software modules within the processor, and so on.

[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 ROM (EPROM), read-only memory (ROM), or compact disc read-only memory (CD-ROM). Memory may also be 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 shown in the present application). However, the present application is not limited to such medium. Memory in embodiments of the present application may alternatively be a circuit or any other device that can implement a storage function and is configured to store program instructions and / or data. For example, in the case of a receiver, memory may store reference information, i.e., sensing measurement results in a sampling unit. Optionally, in the case of a transmitter, the transmitter's memory may also store reference information, since the transmitter needs to parse CIR parameter information based on 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 from the software programs. The memory 1030 is primarily configured to store software programs and data. The transceiver 1010 may include a control circuit and an antenna. The control circuit is primarily configured to perform conversions between baseband signals and radio frequency signals and to process radio frequency signals. The antenna is primarily configured to receive and transmit radio frequency signals in the form of electromagnetic waves. Input / output devices, such as a touchscreen, display, or keyboard, are primarily configured to receive data entered by the user and output data to the 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 the data of the software program. If the 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 in the form of electromagnetic waves through the antenna. When the data is transmitted to the communication device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 1020. The processor 1020 converts the baseband signal into data and processes the data.

[0199] In other implementations, the radio frequency circuitry and antennas may be located independently of the processor performing baseband processing. For example, in a distributed scenario, the radio frequency circuitry and antennas may be located remotely, independently of the communication equipment.

[0200] The communication device described in the embodiments of this application may have more components than those shown in Figure 10. This is not limited to the embodiments of this application. The methods performed by the processor and transceiver described above are merely examples. For specific steps performed by the processor and transceiver, please refer to the methods described above.

[0201] In other possible implementations, in the communication device shown in Figure 9, the processing unit 901 may be one or more logic circuits. The transceiver unit 902 may be an input / output interface, also called a communication interface, interface circuit, interface, etc. Alternatively, the transceiver unit 902 may be a transmit unit and a receive unit. The transmit unit may be an output interface, and the receive unit may be an input interface. The transmit unit and the receive unit are integrated into a single unit, for example, an input / output interface. As shown in Figure 11, the communication device shown in Figure 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, processing circuit, integrated circuit, system-on-chip (SoC) chip, etc. The interface 1102 may be a communication interface, input / output interface, pin, etc. For example, Figure 11 shows an example where the communication device is a chip. The chip includes logic circuitry 1101 and interface 1102. This is not limited to embodiments of the present invention. The step of transmitting sensing packets as shown above may be performed by a superbandwidth chip, and whether the remaining steps are performed by a superbandwidth chip is not limited to embodiments of the present invention.

[0202] In the embodiments of this application, logic circuits and interfaces may be coupled to each other. The specific methods for connecting logic circuits and interfaces are not limited in the embodiments of this application.

[0203] For example, if a 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 control information and input feedback information. The logic circuit 1101 is further configured to process the feedback information to obtain information about a target.

[0204] For example, if a communication device is configured to perform a method, function, or step performed by a receiver, the interface 1102 is configured to receive 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 feedback information.

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

[0206] For descriptions of control information, feedback information, first control information, second control information, first bitmap, second bitmap, reference sampling unit, etc., in the above embodiments, please refer to the description in the above method embodiments. Details are not described again here.

[0207] For specific implementations of the embodiment shown in Figure 11, please refer to the embodiments described above. Further details are not provided here.

[0208] Embodiments of the present invention further provide a wireless communication system, which includes a transmitter and a receiver. The transmitter and receiver may be configured to perform the method in any one of the embodiments described above (shown in Figure 3).

[0209] Furthermore, the present application further provides a computer program used to perform operations and / or processes performed by the transmitter in the manner provided in the present application.

[0210] The present application further provides a computer program used to perform operations and / or processes to be performed by a receiver in the manner provided herein.

[0211] The present invention further provides a computer-readable storage medium that stores computer code. When the computer code is executed by a computer, the computer can perform operations and / or processes performed by a transmitter in the manner provided in the present invention.

[0212] The present invention further provides a computer-readable storage medium that stores computer code. When the computer code is executed by a computer, the computer can perform operations and / or processes that are performed by a receiver in the manner provided in the present invention.

[0213] This application further provides a computer program product. The computer program product includes computer code or a computer program. When the computer code or computer program is executed on a computer, the operations and / or processes performed by the transmitter in the manner provided in this application are executed.

[0214] This application further provides a computer program product. The computer program product includes computer code or a computer program. When the computer code or computer program is executed on a computer, the operations and / or processes performed by the receiver in the manner provided in this application are executed.

[0215] In some embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the described device embodiments are merely examples. For example, the division into units is only a logical functional division, and in actual implementation, other divisions may be possible. For example, a plurality of units or components may be coupled or integrated with other systems, or some features may be ignored or not executed. Also, the couplings or direct couplings or communication connections shown or discussed may be implemented through indirect couplings or communication connections, or electrical connections, mechanical connections, or other forms of connections between some interfaces, devices, or units.

[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. They may be located in one place or distributed among 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] Also, the functional units in the embodiments of the present application may be integrated into one processing unit, each unit may exist physically alone, 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 such an understanding, the technical solution of the present application essentially, or the part that contributes to the prior art, or a part or all of the technical solution, may be implemented in the form of a software product. The 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 execute all or part of the steps of the method described in the embodiments of the present application. The above-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 only a specific implementation of the present application and is not intended to limit the protection scope of the present application. Any modification or substitution that can be easily conceived by those skilled in the art within the technical scope disclosed in the present application should be within the protection scope of the present application. Therefore, the protection scope of the present application should follow the protection scope of the claims.

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

Claims

1. A method for feeding back sensing measurement results in a wireless network, Transmitting control information including first control information, the first control information includes information regarding a first threshold, and the first threshold instructs the system to process the sensing measurement results based on the first threshold. The system receives feedback information, including channel impulse response (CIR) parameter information, obtained by processing the sensing measurement results based on the control information. A method of having.

2. The first control information instructs the system to feed back the sensing measurement results in bitmap mode. The method according to claim 1.

3. The first control information further includes information regarding the compression mode, the compression mode being one of the following: no compression, a compression mode using a fixed number of sampling points as units, and a compression mode using a variable number of sampling points as units. The method according to claim 1.

4. The first control information further includes information indicating the length of the bitmap and the position information of the corresponding sampling point. 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 the starting position of the sampling point relative to the reference path. The method according to claim 4.

6. The feedback information includes a first bitmap, where each bit in the first bitmap indicates whether the sensing measurement results should be fed back in the corresponding group. The method according to claim 4.

7. The feedback information further includes a second bitmap, where each bit in the second bitmap indicates whether the sensing measurement results of the sampling points in the corresponding group should be fed back. The method according to claim 6.

8. The feedback information further includes information related to the CIR parameter information, and the information related to the CIR parameter information is 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. The method according to claim 6.

9. A communication device, The transceiver unit is configured to transmit control information including first control information, the first control information includes information about a first threshold, and the first threshold instructs the system to process the sensing measurement results based on the first threshold, 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. Device.

10. The first control information instructs the system to feed back the sensing measurement results in bitmap mode. The apparatus according to claim 9.

11. The first control information further includes information regarding the compression mode, the compression mode being one of the following: no compression, a compression mode using a fixed number of sampling points as units, and a compression mode using a variable number of sampling points as units. The apparatus according to claim 9.

12. The first control information further includes information indicating the length of the bitmap and the position information of the corresponding sampling point. The apparatus according to claim 9 or 10.

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

14. The feedback information includes a first bitmap, where each bit in the first bitmap indicates whether the sensing measurement results should be fed back in the corresponding group. The apparatus according to claim 12.

15. A method for feeding back sensing measurement results in a wireless network, Receiving control information including first control information, the first control information includes information regarding a first threshold, and the first threshold instructs the system to process the sensing measurement results based on the first threshold. The system transmits feedback information including channel impulse response (CIR) parameter information obtained by processing the sensing measurement results based on the first control information. A method of having.

16. The first control information instructs the system to feed back the sensing measurement results in bitmap mode. The method according to claim 15.

17. The first control information further includes information regarding the compression mode, the compression mode being one of the following: no compression, a compression mode using a fixed number of sampling points as units, and a compression mode using a variable number of sampling points as units. The method according to claim 15.

18. The first control information further includes information indicating the length of the bitmap and the position information of the corresponding sampling point. The method according to claim 15 or 16.

19. The position information of the corresponding sampling point includes a reference path and an offset of the starting position of the sampling point relative to the reference path. The method according to claim 18.

20. The feedback information includes a first bitmap, where each bit in the first bitmap indicates whether the sensing measurement results should be fed back in the corresponding group. The method according to claim 18.

21. The feedback information further includes a second bitmap, where each bit in the second bitmap indicates whether the sensing measurement results of the sampling points in the corresponding group should be fed back. The method according to claim 20.

22. The feedback information further includes information related to the CIR parameter information, and the information related to the CIR parameter information is 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. The method according to claim 20.

23. A communication device, A transceiver unit is configured to receive control information including first control information, the first control information includes information regarding a first threshold, and the first threshold instructs the system to process sensing measurement results based on the first threshold. The transceiver unit is further configured to transmit feedback information including channel impulse response (CIR) parameter information obtained by processing the sensing measurement results based on the first control information. Device.

24. The first control information instructs the system to feed back the sensing measurement results in bitmap mode. The apparatus according to claim 23.

25. The first control information further includes information regarding the compression mode, the compression mode being one of the following: no compression, a compression mode using a fixed number of sampling points as units, and a compression mode using a variable number of sampling points as units. The apparatus according to claim 23.

26. The first control information further includes information indicating the length of the bitmap and the position information of the corresponding sampling point. The apparatus according to claim 23 or 24.

Images