Sensing measurement result feedback method and device based on ultra-bandwidth

Abstract

The invention discloses a UWB (Ultra Wideband)-based sensing measurement result feedback method and a UWB-based sensing measurement result feedback device, which are applied to a UWB-based WPAN (Wireless Personal Area Network) system, such as an 802.15. 4a protocol, an 802.15. 4z protocol or an 802.15. 4ab protocol and the like in 802.15 series protocols. The method can also be applied to a wireless local area network system, a sensing system and the like of an IEEE 802.11 ax next generation Wi-Fi protocol, such as 802.11 be, Wi-Fi 7 or EHT, and a 802.11 series protocol, such as 802.11 be next generation, Wi-Fi 8 and the like. The method comprises the steps that a sending end sends control information, and correspondingly, a receiving end receives the control information. And then the receiving end sends feedback information, and correspondingly, the sending end receives the feedback information. According to the technical scheme provided by the invention, the signaling overhead can be effectively saved.

Description

[0001] This application is a divisional application. The application number of the original application is 202211698165.1, and the original application date is December 28, 2022. The entire contents of the original application are incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a method and device for feedback of perception measurement results based on ultra-wideband. Background Art

[0003] Ultra wideband (UWB) is a wireless carrier communication technology that can transmit data using nanosecond non-sinusoidal narrow pulses, so it occupies a wide spectrum range. Due to its narrow pulses and low radiation spectrum density, UWB has the advantages of strong multipath resolution, low power consumption, and strong confidentiality.

[0004] Based on the characteristics of UWB, UWB pulses can be used for perception. In perception applications, by detecting the echo of the UWB signal on the target, information related to the target such as distance, angle or speed can be extracted. In one scenario of perception application, the perception initiator is the transmitter of the UWB signal, and the perception responder is the receiver of the UWB echo signal. If the perception initiator needs to obtain the perception measurement result, the perception responder needs to feedback the perception measurement result to the perception initiator. For example, the perception responder can feed back all the perception measurement results to the perception initiator.

[0005] However, the signaling overhead of the feedback method shown above can be further reduced. Summary of the invention

[0006] The present application provides a UWB-based perception measurement result feedback method and device, which effectively reduces signaling overhead.

[0007] In a first aspect, an embodiment of the present application provides a method for feedback of perception measurement results based on ultra-wideband, the method comprising:

[0008] Send control information, where the control information includes first control information, where the first control information is used to indicate a threshold-based feedback method for feeding back a perception measurement result; receive feedback information, where the feedback information includes channel impulsive response (CIR) parameter information, where the CIR parameter information is obtained by processing the perception measurement result based on the first control information.

[0009] In a second aspect, an embodiment of the present application provides a method for feedback of perception measurement results based on ultra-wideband, the method comprising:

[0010] Receive control information, where the control information includes first control information, where the first control information is used to indicate a threshold-based feedback method for feeding back a perception measurement result; send feedback information, where the feedback information includes channel impulse response CIR parameter information, where the CIR parameter information is obtained by processing the perception measurement result based on the first control information.

[0011] In an embodiment of the present application, the transmitting end sends control information to the receiving end, so that the receiving end can process the original CIR parameter based on the control information, such as obtaining CIR parameter information based on a threshold feedback method, that is, the CIR parameter information is obtained based on a threshold feedback method. By processing the perception measurement results (such as processing based on a threshold feedback method), obtaining CIR parameter information, and then feeding back the CIR parameter information, the signaling overhead can be effectively reduced. At the same time, the receiving end processes based on the control information sent by the transmitting end, and then the receiving end sends feedback information, which effectively improves the process of perception based on UWB pulses, and also effectively guarantees the communication efficiency of both communicating parties.

[0012] In combination with the first aspect or the second aspect, in a possible implementation manner, the first control information includes information of a first threshold, and the first threshold is used to determine whether to feed back the perception measurement results in one or more non-reference sampling units based on the perception measurement results in the reference sampling unit.

[0013] In combination with the first aspect or the second aspect, in a possible implementation manner, the first threshold is used to determine whether to feed back one or more groups of perception measurement results in each non-reference sampling unit in one or more non-reference sampling units based on the perception measurement results in the reference sampling unit.

[0014] In combination with the first aspect or the second aspect, in a possible implementation manner, the value of the first threshold is proportional to a radar cross section (RCS) of the target.

[0015] In an embodiment of the present application, without affecting the transmitter's acquisition of information related to the target, by updating the value of the first threshold according to the target's RCS, the signaling overhead of the CIR parameter information is effectively saved. For example, when the transmitter does not obtain the target's RCS, the value of the first threshold can be set to be smaller, such as a low threshold or a lower threshold, so that the receiving end can feedback the perception measurement results in a more comprehensive and detailed manner. When the transmitter finds that the RCS of the target is greater than a certain threshold based on the obtained perception measurement results, the first threshold can be set to be larger, such as larger than the low threshold or the lower threshold. Since the value of the first threshold becomes larger, the perception measurement results of some non-reference sampling units may not need to be fed back, thereby effectively reducing the signaling overhead of the CIR parameter information. Correspondingly, after the transmitter receives the feedback information, even if the perception measurement results of some non-reference sampling units are not fed back, the transmitter can still use the perception measurement results of the reference sampling unit as the perception measurement results of the non-reference sampling unit that has not been fed back.

[0016] In combination with the first aspect or the second aspect, in a possible implementation manner, the first control information also includes information on a compression method, where the compression method includes any one of the following: no compression, a compression method based on a fixed number of sampling points (a compression method based on a fixed number of taps), and a compression method based on a variable number of sampling points (a compression method based on a variable number of taps).

[0017] Exemplarily, no compression means that the perception measurement result is directly fed back in the form of taps obtained after sampling, without the need to be judged by the first threshold. The compression method in units of a fixed number of taps or a variable number of taps means that one or more taps obtained after sampling can be divided into a group, and then whether to feed back the perception measurement result of a certain group is judged based on the first threshold.

[0018] In the embodiment of the present application, the compression method with a fixed number of sampling points as a unit is simple to implement, does not affect the sending end to obtain relevant information about the target, and can effectively reduce the signaling overhead of the CIR parameter. The compression method with a variable number of sampling points as a unit has a higher degree of freedom for the receiving end to perform compression processing, does not affect the sending end to obtain relevant information about the target, and can effectively reduce the signaling overhead of the CIR parameter.

[0019] In combination with the first aspect or the second aspect, in a possible implementation manner, the first control information also includes address information of a communication device that receives the control information.

[0020] In the embodiment of the present application, the first control information includes address information of one or more receiving ends, so that each receiving end can clearly know the control information, so that each receiving end processes the perception measurement result according to the control information and then feeds back the perception measurement result obtained by each receiving end, thereby effectively improving communication efficiency.

[0021] In combination with the first aspect or the second aspect, in a possible implementation method, the feedback information also 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 when measuring the perception measurement results, and whether the perception measurement results in the reference sampling unit are stored.

[0022] In the embodiment of the present application, by including the above information in the feedback information, the sending end can clearly know the parsing method of the CIR parameter information, thereby improving the communication efficiency of the communicating parties.

[0023] In combination with the first aspect or the second aspect, in a possible implementation manner, when the compression method includes a compression method with a variable number of sampling points as units, the feedback information also includes the following information: the number of groups of a sampling unit, the starting sampling point and the ending sampling point of each group; or, the feedback information also includes the following information: the number of groups of a sampling unit, the starting sampling point and the number of sampling points of each group.

[0024] In the embodiment of the present application, the feedback information includes the above information, so that when the sending end obtains the feedback information, it can clearly know the grouping situation of the perception measurement result by the receiving end, thereby quickly restoring the original CIR parameter.

[0025] In combination with the first aspect or the second aspect, in a possible implementation manner, the feedback information further includes information of a first bitmap, where each bit in the first bitmap is used to indicate whether to feed back the perception measurement result within the corresponding group.

[0026] In combination with the first aspect or the second aspect, in a possible implementation manner, the CIR parameter information includes at least one of the following information: path loss, delay, horizontal angle of arrival (azimuth angle of arrival, AOA), and vertical angle of arrival (zenith angle of arrival, ZOA).

[0027] In combination with the first aspect or the second aspect, in a possible implementation, the feedback information also includes a data pattern indicating the path loss information, and the data pattern includes a data pattern based on amplitude and phase, or at least one of a data pattern based on an in-phase component and an orthogonal component.

[0028] In the embodiment of the present application, by indicating the data mode of the path loss information, the form of the path loss information is more diversified, and different forms of feedback of the perception information can be effectively selected for different application scenarios. For example, when the bit width of the path loss information is small (i.e., the occupied bit length), the feedback accuracy of the amplitude and phase is higher.

[0029] In combination with the second aspect, in a possible implementation method, the method also includes: grouping the perception measurement results in units of a fixed number of sampling points or a variable number of sampling points to obtain one or more groups of perception measurement results; when the difference between the perception measurement results of a certain group and the perception measurement results of the same delay in the reference sampling unit is less than or equal to a first threshold, determining not to feed back the perception measurement results of the certain group; or, when the difference between the perception measurement results of a certain group and the perception measurement results of the same delay in the reference sampling unit is greater than the first threshold, determining to feed back the perception measurement results of the certain group, and feeding back the perception measurement results of the certain group with the difference.

[0030] In a third aspect, an embodiment of the present application provides a communication device, which is used to execute the method in the first aspect or any possible implementation of the first aspect. The communication device includes a unit having the function of executing the method in the first aspect or any possible implementation of the first aspect.

[0031] In a fourth aspect, an embodiment of the present application provides a communication device, which is used to execute the method in the second aspect or any possible implementation of the second aspect. The communication device includes a unit having the function of executing the method in the second aspect or any possible implementation of the second aspect.

[0032] In the third aspect or the fourth aspect, the above communication device and the communication device may include a transceiver unit and a processing unit. For a detailed description of the transceiver unit and the processing unit, reference may also be made to the device embodiment shown below.

[0033] In a fifth aspect, an embodiment of the present application provides a communication device, the communication device comprising a processor, configured to execute the method described in the first aspect or any possible implementation of the first aspect. Alternatively, the processor is configured to execute a program stored in a memory, and when the program is executed, the method described in the first aspect or any possible implementation of the first aspect is executed.

[0034] In a possible implementation manner, the memory is located outside the above communication device.

[0035] In a possible implementation manner, the memory is located within the above-mentioned communication device.

[0036] In the embodiment of the present application, the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together.

[0037] In a possible implementation manner, the communication device further includes a transceiver, where the transceiver is used to receive a signal or send a signal.

[0038] In a sixth aspect, an embodiment of the present application provides a communication device, the communication device comprising a processor, configured to execute the method described in the second aspect or any possible implementation of the second aspect. Alternatively, the processor is configured to execute a program stored in a memory, and when the program is executed, the method described in the second aspect or any possible implementation of the second aspect is executed.

[0039] In a possible implementation manner, the memory is located outside the above communication device.

[0040] In a possible implementation manner, the memory is located within the above-mentioned communication device.

[0041] In the embodiment of the present application, the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together.

[0042] In a possible implementation manner, the communication device further includes a transceiver, where the transceiver is used to receive a signal or send a signal.

[0043] In a seventh aspect, an embodiment of the present application provides a communication device, which includes a logic circuit and an interface, wherein the logic circuit and the interface are coupled; the logic circuit is used to output control information and input feedback information through the interface.

[0044] It is understandable that the logic circuit is also used to process the feedback information to obtain information related to the target. The information related to the target includes information such as speed, angle or attenuation.

[0045] In an eighth aspect, an embodiment of the present application provides a communication device, which includes a logic circuit and an interface, wherein the logic circuit and the interface are coupled; the logic circuit is used to input control information through the interface and output feedback information.

[0046] It can be understood that the logic circuit is also used to determine feedback information based on the control information.

[0047] In a ninth aspect, an embodiment of the present application provides a computer-readable storage medium, which is used to store a computer program. When the computer-readable storage medium is run on a computer, the method shown in the above-mentioned first aspect or any possible implementation of the first aspect is executed.

[0048] In the tenth aspect, an embodiment of the present application provides a computer-readable storage medium, which is used to store a computer program. When the computer-readable storage medium is run on a computer, the method shown in the above-mentioned second aspect or any possible implementation of the second aspect is executed.

[0049] In the eleventh aspect, an embodiment of the present application provides a computer program product, which includes a computer program or a computer code. When the computer program product is run on a computer, the method shown in the above-mentioned first aspect or any possible implementation of the first aspect is executed.

[0050] In a twelfth aspect, an embodiment of the present application provides a computer program product, which includes a computer program or a computer code. When the computer program product runs on a computer, the method shown in the above-mentioned second aspect or any possible implementation of the second aspect is executed.

[0051] In a thirteenth aspect, an embodiment of the present application provides a computer program. When the computer program runs on a computer, the method shown in the above-mentioned first aspect or any possible implementation of the first aspect is executed.

[0052] In a fourteenth aspect, an embodiment of the present application provides a computer program. When the computer program runs on a computer, the method shown in the above-mentioned second aspect or any possible implementation of the second aspect is executed.

[0053] In the fifteenth aspect, an embodiment of the present application provides a wireless communication system, which includes a transmitting end and a receiving end, the transmitting end is used to execute the method shown in the above-mentioned first aspect or any possible implementation of the first aspect, and the receiving end is used to execute the method shown in the above-mentioned second aspect or any possible implementation of the second aspect.

[0054] The technical effects achieved by the third to fifteenth aspects mentioned above can refer to the technical effects of the first or second aspect or the beneficial effects in the method embodiments shown below, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1a It is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application;

[0056] Figure 1b It is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application;

[0057] Figure 2a It is a schematic diagram of a perception scenario based on a perception respondent provided in an embodiment of the present application;

[0058] Figure 2bIt is a schematic diagram of a perception scenario based on a perception respondent provided in an embodiment of the present application;

[0059] Figure 2c It is a schematic diagram of a perception scenario based on multiple perception respondents provided in an embodiment of the present application;

[0060] Figure 2d It is a schematic diagram of a perception scenario based on multiple perception respondents provided in an embodiment of the present application;

[0061] Figure 2e It is a schematic diagram of a perception scenario based on a perception requester provided in an embodiment of the present application;

[0062] Figure 2f It is a schematic diagram of a perception scenario based on a perception requester provided in an embodiment of the present application;

[0063] Figure 3 It is a flowchart of a UWB-based perception measurement result feedback method provided in an embodiment of the present application;

[0064] Figure 4 This is a sampling schematic diagram provided in an embodiment of the present application;

[0065] Figure 5 It is a schematic diagram of the relationship between the time block, time unit and time sub-unit provided in the embodiment of the present application;

[0066] Figure 6 is a schematic diagram of the relationship between the sensing blocks, sensing rounds and sensing time slots provided in an embodiment of the present application;

[0067] Figure 7a This is a schematic diagram of a perception process provided by an embodiment of the present application;

[0068] Figure 7b This is a schematic diagram of a perception process provided by an embodiment of the present application;

[0069] Figure 7c This is a schematic diagram of a perception process provided by an embodiment of the present application;

[0070] Figure 8 It is a schematic diagram of a simulation result provided in an embodiment of the present application;

[0071] Fig. 9 is a structural diagram of a communication device provided in an embodiment of the present application;

[0072] Fig.10 is a structural diagram of a communication device provided in an embodiment of the present application;

[0073] Fig.11 is a structural diagram of a communication device provided in an embodiment of the present application;

[0074] Fig.12a This is a schematic diagram of providing feedback based on the earliest arrival path as a reference, provided in an embodiment of the present application;

[0075] Figure 12b This is a schematic diagram of providing feedback based on the earliest arrival path as a reference, provided in an embodiment of the present application;

[0076] Fig.12c is a schematic diagram of providing feedback based on the strongest arrival path as a reference, provided in an embodiment of the present application;

[0077] Fig.12d This is a schematic diagram of providing feedback based on the earliest arrival path as a reference, provided in an embodiment of the present application. DETAILED DESCRIPTION

[0078] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described below in conjunction with the accompanying drawings.

[0079] The terms "first" and "second" in the specification, claims and drawings of this application are only used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0080] The "embodiment" mentioned in this article means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0081] In the present application, "at least one (item)" means one or more, "more than one" means two or more, "at least two (items)" means two or three and more than three, and "and / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c".

[0082] The technical solution provided in the present application can be applied to wireless personal area networks (WPAN) based on UWB technology. For example, the method provided in the present application can be applied to the IEEE 802.15 series protocols, such as the 802.15.4a protocol, the 802.15.4z protocol or the 802.15.4ab protocol, or a future generation of UWB WPAN standards, which are not listed here one by one. The method provided in the present application can also be applied to various communication systems, for example, the Internet of Things (IoT) system, the Vehicle to X (V2X), the narrowband Internet of Things (NB-IoT) system, the devices in the Internet of Things, the Internet of Things (IoT) nodes, sensors, etc., the smart cameras in smart homes, smart remote controls, smart water meters and electric meters, and sensors in smart cities, etc. It can also be applicable to LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, long term evolution (LTE) system, and can also be fifth-generation (5G) communication system, sixth-generation (6G) communication system, etc.

[0083] UWB technology is a new type of wireless communication technology. It uses nanosecond non-sinusoidal narrow pulses to transmit data. By modulating impulse pulses with very steep rise and fall times, the spectrum range it occupies is very wide, making the signal have a bandwidth of the order of GHz. The bandwidth used by UWB is usually above 1GHz. Because the UWB system does not need to generate a sinusoidal carrier signal and can directly transmit an impulse sequence, the UWB system has a very wide spectrum and very low average power. The UWB wireless communication system has the advantages of strong multipath resolution, low power consumption, and strong confidentiality, which is conducive to coexistence with other systems, thereby improving spectrum utilization and system capacity. In addition, in short-distance communication applications, the transmission power of the UWB transmitter can usually be less than 1mW (milliwatt). Theoretically, the interference generated by the UWB signal is only equivalent to a wideband white noise. This helps the good coexistence between ultra-wideband and existing narrowband communications. Therefore, the UWB system can work simultaneously with the narrowband (NB) communication system without interfering with each other. The method provided in the present application can be implemented by a communication device in a wireless communication system. In a communication device, a module that implements the UWB system function can be called a UWB module (such as being used to send UWB pulses), and a module that implements the narrowband communication system function can be called a narrowband communication module. The UWB module and the narrowband communication module can be different devices or chips, etc., and the embodiments of the present application do not limit this. Of course, the UWB module and the narrowband communication module can also be integrated into one device or chip, and the embodiments of the present application do not limit the implementation of the UWB module and the narrowband communication module in the communication device.

[0084] Although the embodiments of the present application are mainly described by taking WPAN as an example, especially the network applied to the IEEE 802.15 series standard as an example. However, it is easy for those skilled in the art to understand that the various aspects involved in the present application can be extended to other networks using various standards or protocols. For example, wireless local area networks (WLAN), Bluetooth (BLUETOOTH), high performance wireless LAN (HIPERLAN) (a wireless standard similar to the IEEE802.11 standard, mainly used in Europe) and wide area network (WAN) or other networks known now or developed later. Therefore, regardless of the coverage range and wireless access protocol used, the various aspects provided by the present application can be applied to any suitable wireless network.

[0085] The method provided in the present application can be implemented by a communication device in a wireless communication system. The communication device can be a device involved in a UWB system. For example, the communication device may include but is not limited to a communication server, a router, a switch, a bridge, a computer, a mobile phone, etc. For another example, the communication device may include a central control point, such as a personal area network (PAN) or a PAN coordinator, etc. For another example, the communication device may include a user equipment (UE), and the user equipment may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, Internet of Things (IoT) devices, computing devices, or other processing devices connected to a wireless modem, etc., which are not listed here one by one. For another example, the communication device may include a chip, which may be set in a communication server, a router, a switch, or a user terminal, etc., which are not listed here one by one.

[0086] As an example, Figure 1a and Figure 1b It is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application. Figure 1a It is a star topology structure provided in the embodiment of the present application. Figure 1b This is a point-to-point topology structure provided by the embodiment of the present application. Figure 1a As shown in Figure 1, in a star topology, a central control node can communicate data with one or more other devices. Figure 1b As shown, in a point-to-point topology, data communication can be performed between different devices. Figure 1a and Figure 1b In the present application, both the full function device and the reduced function device can be understood as the communication device shown in this application. The full function device and the reduced function device are relative, such as the reduced function device cannot be a PAN coordinator. For example, compared with the full function device, the reduced function device may not have coordination capability or the communication rate is lower than that of the full function device. It can be understood that Figure 1b The PAN coordinator shown is an example only. Figure 1b The other three full-function devices shown can also serve as PAN coordinators, which are not shown one by one here.

[0087] It is understandable that the full-function device and low-function device shown in this application are only examples of communication devices. Any communication device that can implement the UWB-based perception measurement result feedback method provided in this application belongs to the protection scope of this application. The perception initiator and perception responder shown below can be a full-function device or a low-function device, and this application does not limit this.

[0088] As an example, the communication device shown in the embodiment of the present application may include a perception initiator, a perception responder, or a perception requester (or a perception requesting device). The perception initiator and the perception responder are relative. For example, the perception initiator is the party that initiates the perception process, and the perception responder can be the party that responds according to the party that initiates the perception process. For example, the perception initiator can be the transmitter of the UWB signal, and the perception responder is the receiver of the UWB echo signal. For another example, the perception initiator can be the receiver of the UWB echo signal, and the perception responder is the transmitter of the UWB signal. The perception requester can be understood as the party that initiates the perception request to the perception initiator. It can be understood that since the UWB signal sent by the perception initiator needs to reach the target first and then reach the perception responder (such as the UWB signal reaches the perception responder after being reflected or scattered by the target), the signal received by the perception responder can be called a UWB echo signal relative to the UWB signal sent by the perception initiator. It is understandable that, for ease of description, the UWB signal and the UWB echo signal may be collectively referred to as the UWB signal below without distinction. The UWB signal shown in the present application may also be referred to as a perception signal or a UWB pulse, etc. It is understandable that a perception packet shown below may include one or more UWB pulses (or UWB signals).

[0089] Based on the above-mentioned perception initiator, perception responder and perception requester, the present application embodiment provides the following six scenarios. It can be understood that: Figure 2a and Figure 2b It can be understood as a sensing scenario based on a sensing responder, such as bi-static sensing. Figure 2c and Figure 2d It can be understood as a sensing scenario based on multiple sensing responders, such as multi-static sensing. Figure 2a and Figure 2c In the example, the sensing initiator is the receiver of the UWB echo signal, and the sensing responder is the transmitter of the UWB signal. Figure 2b and Figure 2d In the UWB system, the sensing initiator is the transmitter of the UWB signal, and the sensing responder is the receiver of the UWB signal. Figure 2e and Figure 2f It can be understood as a perception scenario based on the participation of a perception initiator, a perception responder, and a perception requester, such as sensing by proxy.

[0090] like Figure 2a As shown in FIG, since the perception initiator is the receiving end of the UWB echo signal, the perception initiator can obtain the perception measurement result and relevant information about the target according to the UWB echo signal. Therefore, there is no need to transmit feedback information between the perception initiator and the perception responder through the air interface. Figure 2b As shown in , since the sensing initiator is the transmitter of the UWB signal and the sensing responder is the receiver of the UWB echo signal, the sensing initiator needs to obtain information related to the target through the feedback information sent by the sensing responder. Figure 2c As shown, multiple sensing responders are all transmitters of UWB signals. Similarly, there is no need to transmit feedback information between the sensing initiator and the multiple sensing responders through the air interface. Figure 2d In the scenario shown, the perception initiator needs to obtain feedback information from multiple perception respondents. Figure 2e As shown in the figure, the perception requester can send a perception request to the initiator. The perception responder is the transmitter of the UWB signal, and the perception initiator is the receiver of the UWB echo signal. After the perception initiator receives the feedback information, it needs to transmit the feedback to the perception requester via the air interface. Figure 2f As shown, the perception requester sends a perception request to the perception initiator. The perception initiator is the transmitter of the UWB signal, and the perception responder is the receiver of the UWB echo. After the perception responder receives the feedback information, it needs to transmit the feedback to the perception initiator via the air interface first, and then the perception initiator transmits the feedback to the perception requester via the air interface.

[0091] In general, Figure 2b and Figure 2d In the process, the sensing responder needs to send feedback information to the sensing initiator. Figure 2e In the process, the perception initiator needs to send feedback information to the perception requester. Figure 2f In the process, 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.

[0092] Figure 2a to Figure 2e The sensing packet shown in can be understood as a UWB signal, and a device that receives the sensing packet can obtain a sensing measurement result based on the sensing packet. Optionally, the device that receives the sensing packet can also feed back the sensing measurement result through feedback information.

[0093] In a UWB-based perception measurement result feedback method, the format of the feedback information may be as shown in Table 1.

[0094] Table 1

[0095]

[0096]

[0097] According to the feedback information shown in Table 1, the signaling overhead of the feedback information is relatively large, and the feedback information cannot effectively utilize the temporal similarity and spatial correlation.

[0098] In view of this, the present application provides a UWB-based measurement result feedback method and device, which can not only reduce the signaling overhead of the feedback information as much as possible, but also effectively utilize the temporal similarity and spatial correlation of the parameters in the feedback information. Figure 3 It is a flow chart of a UWB-based perception measurement result feedback method provided in an embodiment of the present application.

[0099] Figure 3 The method shown can be applied to a transmitting end and a receiving end. The transmitting end can be understood as an end that sends control information, and the receiving end can be understood as an end that receives control information; or, the transmitting end can be understood as an end that receives feedback information, and the receiving end can be understood as an end that sends feedback information. Exemplarily, the transmitting end can include a full-function device, and the receiving end can include a low-function device; another example is that the transmitting end can include a low-function device, and the receiving end can include a low-function device; another example is that the transmitting end includes a low-function device, and the receiving end includes a full-function device; another example is that both the transmitting end and the receiving end are full-function devices. Exemplarily, the transmitting end can include Figure 2b and Figure 2d As shown in the sensing initiator, the receiving end may include Figure 2b and Figure 2d The sensing responder shown, the provider of CIR parameters is Figure 2b and Figure 2d As another example, the sending end may include Figure 2e As shown in the sensing requester, the receiving end may include Figure 2e The perception initiator shown, the provider of CIR parameters is Figure 2e As another example, the sending end may include Figure 2f As shown in the sensing initiator, the receiving end may include Figure 2f The sensing responder shown, the provider of CIR parameters is Figure 2f As another example, the sending end may include: Figure 2f As shown in the sensing requester, the receiving end may include Figure 2f The perception initiator shown, the provider of CIR parameters is Figure 2fAs another example, the sending end may include: Figure 2f As shown in the sensing requester, the receiving end may include Figure 2f The sensing responder shown, the provider of CIR parameters is Figure 2f The perceived respondent shown. Understandably, based on Figure 2b , Figure 2d , Figure 2e and Figure 2f The listed transmitting end and receiving end are only examples, and any device that can implement the method provided by the embodiment of the present application belongs to the protection scope of the present application, so the transmitting end and receiving end shown in the above list should not be understood as a limitation on the embodiment of the present application. It can be understood that the present application describes the method provided by the embodiment of the present application on both sides of the transmitting end and the receiving end, but the transmitting end and the receiving end may also have other devices in the process of transmitting information, such as forwarding information between the transmitting end and the receiving end through a forwarding device. Therefore, the mutual transmission of information in the present application can be realized by technical means that can be completed by those skilled in the art, and the present application does not limit other devices other than the transmitting end and the receiving end.

[0100] In the introduction Figure 3 Before describing the method shown, the sampling unit and sampling points involved in the embodiments of the present application are described in detail below.

[0101] Figure 4 This is a sampling schematic diagram provided in an embodiment of the present application. Figure 4 Shown are different taps sampled based on a perceptual snapshot. Figure 4 The horizontal axis shown can be understood as the delay from the transmission time to the reception time, and the unit of the delay is nanoseconds (ns). The vertical axis can be understood as the path loss information, and the unit of the path loss information is decibel (dB). The path loss information can be understood as the information obtained according to the attenuation of the UWB signal during the transmission process from transmission to reception, or the information obtained according to the attenuation of the transmission power of the UWB signal. For example, Figure 4 The path loss information shown is determined based on the sum of the square of the real part and the square of the imaginary part of the path loss, such as Figure 4 The calculation method of the vertical coordinate can be 10*log10(Re 2 +Im 2)-the power of the transmitted signal, 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. It should not be understood as a limitation on the embodiments of the present application. The tap shown in the embodiments of the present application can carry delay and path loss information, or the tap can correspond to path loss information and delay at the same time. In general, the relationship between snapshot and tap can be understood as follows: the provider of feedback information (or the generator of feedback information, or understood as a communication device that generates feedback information) can perform sampling based on the parameters obtained in a snapshot, thereby obtaining multiple taps. It can be understood that Figure 4 The tap is shown to carry delay and path loss information only as an example. Optionally, a tap may also carry ZOA and / or AOA, etc. ( Figure 4 not shown).

[0102] For example, a sensing packet may correspond to a snapshot. Figure 2b and Figure 2d After receiving a perception packet, the parameters obtained based on the perception packet can be determined as the parameters of a snapshot. Alternatively, a snapshot can also be understood as a set of taps obtained by sampling a perception packet. When sampling the parameters in a perception snapshot, the sampling can be performed based on a certain threshold. Figure 4 The sampling is performed by taking the value greater than -160dB as an example, so as to obtain different taps within a perception snapshot. Figure 4 The sampling thresholds shown are only examples and should not be understood as limitations on the embodiments of the present application. It is understandable that the embodiments of the present application are described by taking one perception packet corresponding to one snapshot as an example, but the present application can also be applied to the case where one perception packet corresponds to multiple snapshots, or multiple perception packets correspond to one snapshot. That is, according to the case where one perception packet corresponds to one snapshot shown in the embodiments of the present application, those skilled in the art can adaptively change the relationship between the perception packet and the snapshot.

[0103] Optionally, the number of taps included in a snapshot can be based on a sampling threshold (such as Figure 4-160dB as shown). Optionally, when the sampling threshold is not set, the duration corresponding to a tap can also be determined based on the sampling frequency. For example, when the sampling frequency is 500MHz, a snapshot is sampled, and the interval between two taps is 2ns. The embodiment of the present application does not limit the number of taps included in a snapshot. Similarly, the embodiment of the present application does not limit the number of perception packets sent by the perception initiator, or the number of perception packets sent by the perception responder. Exemplarily, the number of perception packets refers to the perception packets obtained from the provider of the CIR parameter after obtaining the control information and before obtaining the feedback information according to the control information. The embodiment of the present application does not limit the number of snapshots corresponding to the CIR parameter information fed back in the feedback information. That is to say, the embodiment of the present application does not limit the number of non-reference sampling units shown below.

[0104] A snapshot shown above can be called a sampling unit, and a tap can be called a sampling point, a sampling node or a perception sampling point, etc. The above names are used in the following introduction of this application, but should not be understood as a limitation on the embodiments of the present application.

[0105] like Figure 3 As shown, the method includes:

[0106] 301. A transmitting end sends control information, and correspondingly, a receiving end receives the control information.

[0107] The control information includes first control information, and the first control information is used to indicate a threshold-based feedback method for feeding back the perception measurement result. The control information can be used to control the feedback method of the perception measurement result. Optionally, the control information can also be used to control the feedback cycle of the perception measurement result. Alternatively, the control information can be understood as control information related to the perception process. The receiving end can feed back the perception measurement result based on the control information, such as the perception measurement result is fed back in the form of CIR parameter information. Exemplarily, the control information can be included in a physical layer (physical layer, PHY) protocol data unit (PHYprotocol data unit, PPDU). For example, the control information can be carried in a physical layer service data unit (PHY service data unit, PSDU) in the PPDU. The embodiment of the present application does not limit the specific location of the control information.

[0108] The perception measurement result can be understood as the original CIR parameter (or uncompressed CIR parameter, or one or more taps obtained by using the snapshot) obtained based on the perception packet (such as the CIR parameter shown in Table 8a below shows the uncompressed CIR parameter), and the perception packet may include one or more UWB pulses (or called UWB signals or perception signals, etc.). In other words, based on the perception packet, the provider of the CIR parameter (such as the receiving end) can obtain the perception measurement result, such as the path loss, delay, ZOA, AOA, etc. of the target. It can be understood that the delay can be the delay relative to the UWB pulse transmission time, etc., and the embodiment of the present application does not limit the reference standard for the delay.

[0109] In a possible implementation, the first control information includes information of a first threshold, and the first threshold is used to determine whether to feed back the perceptual measurement results in one or more non-reference sampling units based on the perceptual measurement results in the reference sampling unit. In other words, the first threshold is a threshold used to measure whether to feed back the perceptual measurement results in one or more non-reference sampling units. For an explanation of the first threshold, please refer to the description of the compression method below, which will not be described in detail here.

[0110] Exemplarily, the first threshold shown in the embodiment of the present application may include any one of the high threshold, normal threshold, low threshold, and lower threshold as shown in Table 2. As shown in Table 2, when the value of the field where the first threshold is located is 00, it means that the first threshold is a high threshold; when the value of the field where the first threshold is located is 01, it means that the first threshold is a normal threshold; if the value of the field where the first threshold is located is 10, it means that the first threshold is a low threshold; if the value of the field where the first threshold is located is 11, it means that the first threshold is a lower threshold. It can be understood that the correspondence between the field value and the description of the first threshold shown in Table 2 is only an example and should not be understood as a limitation on the embodiments of the present application. The high threshold, low threshold and lower threshold shown in Table 2 are relative to the normal threshold. The high threshold, normal threshold, low threshold and lower threshold are only one way of division. For example, they can also be divided into threshold 1, threshold 2, threshold 3 and threshold 4; or, first threshold a, first threshold b, first threshold c and first threshold d; or, first threshold, second threshold, third threshold and fourth threshold, etc., which are not listed one by one here.

[0111] Table 2

[0112] The value of the field where the first threshold is located describe 00 High threshold, for example, Threshold = 2*amacCirDifferenceThres 01 Normal threshold, for example, Threshold = amacCirDifferenceThres 10 Low threshold, for example, Threshold = 1 / 2*amacCirDifferenceThres 11 Lower threshold, for example, Threshold = 1 / 4 * amacCirDifferenceThres

[0113] It should be noted that amacCirDifferenceThres shown in Table 2 can be understood as a MAC constant. The specific value of the MAC constant can be defined by the standard or indicated by the sender, etc., and the embodiment of the present application does not limit this. For example, the MAC constant can be equal to 5*10 -4 It is understandable that the MAC constants shown in the embodiments of the present application may be the same for all targets, or different targets may have different MAC constants, and the embodiments of the present application are not limited to this.

[0114] In one possible implementation, the value of the first threshold may be proportional to the radar cross section (RCS) of the target. For example, when the RCS of the target is large, the first threshold may be set larger (such as the high threshold or normal threshold shown in Table 2), and when the RCS of the target is small, the first threshold may be set smaller (such as the low threshold or lower threshold shown in Table 2). It can be understood that the above larger and smaller are relative. For example, when the transmitting end does not obtain the RCS of the target, the value of the first threshold may be set smaller, such as the low threshold or the lower threshold, so that the receiving end can feedback the perception measurement results in a more comprehensive and detailed manner. When the transmitting end finds that the RCS of the target is greater than a certain threshold based on the perception measurement results obtained, the first threshold may be set larger, such as larger than the low threshold or the lower threshold. Exemplarily, the RCS of an adult may be 1 square meter, and the RCS of a pet may be 0.1 square meter, so the first threshold of an adult is larger than the first threshold of a pet. Since the value of the first threshold becomes larger, the perception measurement results of some non-reference sampling units may not need to be fed back, thereby effectively reducing the signaling overhead of the CIR parameter information. Correspondingly, after the transmitter receives the feedback information, even if the perception measurement results of some non-reference sampling units are not fed back, the transmitter can still use the perception measurement results of the reference sampling unit as the perception measurement results of the non-reference sampling unit that has not been fed back. In other words, without affecting the transmitter's acquisition of relevant information about the target, by updating the value of the first threshold according to the target's RCS, the signaling overhead of the CIR parameter information is effectively saved.

[0115] In a possible implementation manner, the first control information further includes information on a compression method, where the compression method includes any one of the following: no compression, a compression method using a fixed number of sampling points as a unit, and a compression method using a variable number of sampling points as a unit.

[0116] Table 3

[0117]

[0118] As shown in Table 3, the fixed number of sampling points as a unit, or the variable number of sampling points as a unit, means that when determining whether to feed back the perceptual measurement result in the non-reference sampling unit according to the first threshold, the fixed number of sampling points (or the variable number of sampling points) can be used as a unit to measure whether to feed back the perceptual measurement result in one unit. As shown in Table 4, if the perceptual measurement result in the one unit is fed back, the perceptual measurement result in the one unit can be compressed by the perceptual measurement result in the reference sampling unit, such as based on the perceptual measurement result in the reference sampling unit (such as a certain parameter) and the perceptual measurement result of the corresponding delay in the one unit (such as the same parameter) are differentiated (referring to the difference of the same parameter), and the differential perceptual measurement result is obtained (which can also be understood as the difference between the perceptual measurement result in the one unit and the perceptual measurement result of the same delay in the reference sampling unit), so as to be included in the CIR parameter information. It can be understood that Table 4 and Table 3 can be understood as tables of compression methods described in different ways, and Table 4 can be understood as further describing the compression method in detail on the basis of Table 3.

[0119] Table 4

[0120]

[0121] For ease of description, the following will refer to the perception measurement results within a unit as a group of perception measurement results, that is, the perception measurement results within a sampling unit can be grouped in units of a fixed number of sampling points to obtain multiple groups of perception measurement results. If the perception measurement results include path loss information and delay, the multiple groups of perception measurement results can also be referred to as multiple groups of taps, and the number of taps in each group of taps can be fixed or variable. Of course, the perception measurement results can also include AOA and ZOA (the number of antennas used to measure the perception measurement results is two or more). In this case, even if the multiple groups of perception measurement results include path loss information, delay, AOA and ZOA, tap (that is, delay and path loss) can still be used to measure whether to feed back all parameters in this group.

[0122] It can be understood that, since the perception measurement result in the non-reference sampling unit may be greater than the perception measurement result of the corresponding delay in the reference sampling unit, or may be less than the perception measurement result of the corresponding delay in the reference sampling unit, the differential perception measurement result may include positive and negative points. Thus, the transmitting end can accurately restore the perception measurement result in the non-reference sampling unit based on the differential perception measurement result and the perception measurement result in the reference sampling unit.

[0123] The following is an explanation in combination with the first threshold and the compression method.

[0124] As an example, if the difference between each tap in a certain group and the tap with the same delay in the reference sampling unit is less than the first threshold, then all taps in the certain group are not fed back, or all perception measurement results in the certain group (such as including path loss information and delay, or may also include AOA and ZOA) are not fed back, or it can be called that the difference between each tap in the certain group and the tap with the same delay in the reference sampling unit is not fed back. That is to say, when it is determined not to feed back the perception measurement result in the certain group, even if the CIR parameter information does not include the information of the perception measurement result in the certain group, the transmitter can still estimate the perception measurement result in the certain group through the perception measurement result in the reference sampling unit (such as the perception measurement result in the reference sampling unit can be used to replace the perception measurement result in the certain group), thereby not only effectively reducing the signaling overhead, but also not affecting the transmitter to obtain information related to the target.

[0125] It can be understood that the "difference" in the difference between each tap in a certain group shown in the embodiment of the present application and the tap with the same delay in the reference sampling unit can refer to the difference in path loss, or can be the difference between the real parts of the path loss, or can be the difference between the imaginary parts of the path loss, or can be based on Re 2 +Im 2 Determine the difference (such as Figure 4 ), which will not be listed here one by one. The specific calculation method of this difference is not limited in the embodiment of the present application.

[0126] It should be noted that although the transmitter estimates the perception measurement results in a certain group by referring to the perception measurement results in the sampling unit, it will not affect the accuracy of the transmitter in obtaining information related to the target. The reason is that even if the perception measurement results are fed back in an uncompressed manner, there will be data quantization processing. In this case, the CIR parameter information obtained by the transmitter is the data after quantization processing. Through the determination of the first threshold shown in the embodiment of the present application, the error caused by replacing the perception measurement results in a certain group shown above with the perception measurement results in the reference sampling unit will be smaller than the error caused by the quantization processing, thereby not reducing the accuracy of the transmitter in obtaining information related to the target, and can also achieve the purpose of signaling overhead.

[0127] As another example, if the difference between a certain tap in a certain group and a tap with the same delay in a reference sampling unit is greater than a first threshold, the difference between all taps in the certain group and the tap with the same delay in the reference sampling unit is fed back, or the difference between all perception measurement results in the certain group (i.e., the difference between a certain tap in the above-mentioned certain group and the tap with the same delay in the reference sampling unit) is fed back. That is, as long as there is a tap in a group and the difference between it and the tap with the same delay in the reference sampling unit is greater than the first threshold, it can be determined that all perception measurement results in this group are fed back. Feedback of the perception measurement results that need to be fed back by means of differences can effectively save signaling overhead.

[0128] As another example, if only a small number of taps in a group have a difference greater than the first threshold with the taps with the same delay in the reference sampling unit, then only the small number of taps in this group can be fed back. If the number of taps in a group whose difference is greater than the first threshold as shown above is less than or equal to 5, then only these 5 taps can be fed back, and other taps in the group may not be fed back. When determining to feed back the perception measurement results in a group, a small number of taps in the group (or the perception measurement results corresponding to a small number of taps) can be fed back in the form of differences, thereby effectively reducing the signaling overhead of the CIR parameter information.

[0129] For example, if Figure 4 Assume that the sampling unit shown in the figure is Figure 4 The sampling unit shown is a non-reference sampling unit. For example, the difference between the path loss at the horizontal coordinate 31ns and the path loss at the horizontal coordinate 31ns in the reference sampling unit is compared with the first threshold. If the difference is less than or equal to the first threshold, all taps in the group where the horizontal coordinate 31ns is located may not be fed back (that is, when the perceived measurement result includes path loss and delay, path loss and delay are not fed back), or the perceived measurement result corresponding to each tap in the group where the horizontal coordinate 31ns is located is not fed back (that is, when the perceived measurement result includes path loss, delay, AOA and ZOA, path loss, delay, AOA and ZOA are not fed back), etc.

[0130] It is understandable that the specific value of the number of taps included in a group is not limited in the embodiments of the present application. The embodiments of the present application do not limit whether to feed back the perception measurement results in a certain group when the difference shown above is equal to the first threshold. In other words, if the difference between a tap in a certain group and a tap with the same delay in the reference sampling unit is equal to the first threshold, the difference between all taps in the certain group and the taps with the same delay in the reference sampling unit may not be fed back, or the difference between all taps in the certain group and the taps with the same delay in the reference sampling unit may be fed back.

[0131] In a possible implementation manner, the first control information further includes address information of a communication device that receives the control information.

[0132] In the embodiment of the present application, the number of communication devices that receive the control information, i.e., receiving terminals, may be one or more. By including the address information of one or more receiving terminals in the first control information, each receiving terminal can clearly know the control information, so that each receiving terminal processes the perception measurement result according to the control information, and then feeds back the perception measurement result obtained by each receiving terminal, which effectively improves the communication efficiency.

[0133] For example, Table 5 is a schematic diagram of the content of a control information provided by an embodiment of the present application. The content shown in Table 5 can also be understood as an information element (IE) in the control information. Whether the control information includes other IEs is not limited in the embodiment of the present application. Exemplarily, the IE shown in Table 5 can be called a sensing CIR feedback control IE. As shown in Table 5, the sensing CIR feedback control IE may include a unit identifier (also referred to as an element ID), an address size specifier, a responder number, and a first control information. The first control information can also be referred to as a CIR feedback control parameter. The content in the first control information can be shown in Table 6. As shown in Table 6, the device address can be understood as the address of the receiving end shown above; the field where the CIR feedback threshold is located can be understood as the field where the first threshold is located shown above, such as Table 2; the field where the compression method is located can be understood as the field shown in Table 3 or Table 5 above.

[0134] Table 5

[0135]

[0136] Table 6

[0137]

[0138] Exemplarily, as shown in Table 5, the unit ID can be used to indicate the ID of the perceived CIR feedback control IE. The address size indication can be used to indicate the number of bytes indicated by the device address. If the value of the field where the address size indication is located is 0, it can indicate that the device address uses a 2-byte short address. If the value of the field where the address size indication is located is 1, it can indicate that the device address uses an 8-byte extended address. The number of responders can indicate the number of receiving ends, such as for Figure 2b and Figure 2d For , the number of respondents refers to the number of perceptual respondents who participate in the perceptual process; Figure 2e For , the number of responders refers to the number of sensing initiators; Figure 2f For example, the responder can be the number of perception initiators or the number of perception responders. The first control information may include the parameters of CIR feedback control required by each responder, that is, the first control information may include the first threshold, compression mode and other control parameters required by each responder. Exemplarily, as shown in Table 6, the device address can be used to indicate the address of the responder device, and the value of the CIR feedback threshold can refer to Table 2. The CIR reference information request can be understood as a request for the perception measurement result in the reference sampling unit shown above. If the value of the field where the CIR reference information request is located is 0, it means that the responder does not need to feedback the perception measurement result in the reference sampling unit (also called CIR reference information). If the value of the field where the CIR reference information request is located is 1, it means that the responder needs to feedback the perception measurement result in the reference sampling unit. The value of the compression mode can refer to Table 3 or Table 4, which will not be described in detail here.

[0139] It should be noted that when the target's movement speed is relatively high, the perception measurement results in the reference sampling unit can be updated more frequently, and when the target's movement speed is relatively slow, the update frequency of the perception measurement results in the reference sampling unit can be reduced. That is, when the transmitting end finds that the target's movement speed is greater than a certain threshold, the transmitting end can set the value of the CIR reference information request to 1, thereby requesting the receiving end to update the perception measurement results in the reference sampling unit; when the target's movement speed is less than a certain threshold, the transmitting end can set the value of the CIR reference information request to 0, thereby indicating that the receiving end does not need to update the perception measurement results in the reference sampling unit. It can be understood that when the target's movement speed is relatively high, the change in the original CIR parameter is also relatively large. By updating the perception measurement results in the reference sampling unit, namely the CIR reference information, more frequently, the dynamic range of the difference, namely the differential information, shown in the embodiment of the present application can be reduced, thereby achieving the purpose of expressing the differential information with fewer bits.

[0140] 302. The receiving end sends feedback information, and correspondingly, the sending end receives the feedback information.

[0141] The feedback information includes CIR parameter information, and the CIR parameter information is obtained by processing the perception measurement result based on the first control information. The CIR parameter information refers to information obtained by processing the original CIR parameter based on the first control information. For example, the CIR parameter information may be information obtained by quantizing the original CIR parameter based on the first control information. For another example, the CIR parameter information may be information obtained by quantizing and compressing the original CIR parameter based on the first control information.

[0142] It is understandable that after the receiving end receives the feedback information, it can obtain information such as the distance, speed or attenuation of the target based on the feedback information. The feedback information can be information for one target or for multiple targets, which is not limited in the embodiments of the present application. For example, after the receiving end receives the feedback information, it can parse parameters related to the target to obtain information of one or more targets.

[0143] In a possible implementation manner, 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:

[0144] 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 when measuring the perception measurement results, and whether the perception measurement results in the reference sampling unit are stored.

[0145] Exemplarily, by including the number of sampling units corresponding to the CIR parameter information and the number of sampling points included in each sampling unit, the transmitting end can be informed of the total number of sampling points corresponding to the CIR parameter information obtained. Optionally, if grouping is performed in units of a fixed number of sampling points, the transmitting end can also obtain the total number of groups. Exemplarily, by including the number of antennas used when measuring the perception measurement results, the transmitting end can accurately distinguish the perception measurement results obtained by different antennas from the CIR parameter information. Exemplarily, by including whether the perception measurement results in the reference sampling unit (also referred to as reference information or CIR reference information, etc.) are stored, the transmitting end can combine this information in the next control information to indicate the update of the perception measurement results in the reference sampling unit (or indicate the update of the CIR reference information).

[0146] Exemplarily, each of the information shown above may be present in the feedback information in the form of fields. The content shown in Table 7 may be included in the CIR feedback report IE in the feedback information. Whether the feedback information includes other IEs is not limited in the embodiment of the present application.

[0147] Table 7

[0148]

[0149] Understandably, for Figure 2b , Figure 2d and Figure 2f For Figure 2e For , the provider refers to the initiator of perception. Figure 2b and Figure 2d For Figure 2e For Figure 2f For example, when the perception responder has learned the address of the perception requester, the requester can be the perception requester; when the perception responder does not know the address of the perception requester, the requester can be the perception initiator.

[0150] It should be noted that the value of the local CIR reference status shown in Table 7 will affect the value of the CIR reference information request in the next control information. For example, when the local CIR reference status is 0, the CIR reference information request in the next control information can only be 1, which means that the receiving end is requested to update the CIR reference information. When the local CIR reference status is 1, the CIR reference information request in the next control information can be set to 0 or 1 according to actual needs. In the embodiment of the present application, by adding the CIR reference information request field and the local CIR reference status field in the form of "handshake", the reliability of communication can be enhanced and the communication efficiency of both communicating parties can be improved.

[0151] For the description of the CIR feedback report parameters, please refer to Tables 8a to 8d. It can be understood that Tables 8a to 8d are shown using path loss information as an example, but when the CIR parameter information is fed back at the receiving end, it can also include delay, AOA, and ZOA, etc., which are not shown one by one below. For example, the CIR of sampling point 1 in sampling unit 1 can also include delay (i.e., the time domain relative to the sending time), the differential AOA of tap1 in snapshot1, and the differential ZOA of tap1 in snapshot1, which are not listed one by one here.

[0152] It is understandable that the description between the values ​​of each field shown in Table 7 and the meanings corresponding to the values ​​of each field are only examples and should not be understood as limiting the embodiments of the present application. For example, the provider address size indication field and the requester address size indication field may also be described as follows: if it is 1, it indicates that a 2-byte short address is used; if it is 0, it indicates that an 8-byte extended address is used. At the same time, the relationship between the value of the field where the compression method is located and the compression method corresponding to each value may also be different from Table 3 or Table 4, and will not be listed here one by one.

[0153] In a possible implementation, when the compression mode is set to 00, the CIR parameter information may be as shown in Table 8a. That is, Table 8a is shown as an example of non-compression, and the CIR parameter information in Table 8a is a tap obtained by sampling the parameters obtained in the snapshot, and the tap does not need to be judged by the first threshold.

[0154] Table 8a

[0155]

[0156] The parameters and bit lengths shown in Table 8a are only examples and should not be construed as limiting the embodiments of the present application. It is understood that N_snapshot and N_tap shown above are both positive integers.

[0157] In a possible implementation, the feedback information also includes information of a first bitmap, and each bit in the first bitmap is used to indicate whether the perception measurement results in the corresponding group are fed back. That is to say, after the perception measurement results are grouped, whether the perception measurement results of the corresponding group are fed back can be indicated in the form of a bitmap. For example, if the value of a certain bit in the first bitmap is 1, it means that the perception measurement results in the group corresponding to the certain bit are not fed back, and at the same time, the difference between the perception measurement results in the corresponding group and the perception measurement results with the same delay in the reference sampling unit is less than the first threshold. For another example, if the value of a certain bit in the first bitmap is 0, it means that the perception measurement results in the group corresponding to the certain bit are fed back, and at the same time, the difference between at least one tap in the corresponding group and the tap with the same delay in the reference sampling unit is greater than the first threshold (it can also be called that the difference between at least one tap in the corresponding group and the corresponding tap of the reference sampling unit is greater than the first threshold).

[0158] Exemplarily, when the compression mode value is 01, the CIR parameter information may be as shown in Table 8b.

[0159] Table 8b

[0160]

[0161] It can be understood that the bit length of the first bit map shown in Table 8b can be determined according to the number of taps in each snapshot shown in Table 7 and the number of taps in each group shown in Table 8b, such as the bit length of the first bit map = the number of taps in each snapshot / the number of taps in each group.

[0162] It can be understood that the reference sampling unit shown in Table 8b is shown by taking snapshot1 as an example, but it should not be understood as a limitation on the embodiments of the present application. For example, the reference sampling unit can also be snapshot2 or snapshot3, that is, the CIR reference information can be the CIR parameter of snapshot1 or the CIR parameter of other snapshots. Optionally, the N_tap taps included in snapshot1 shown in Table 8b can be grouped in units of a fixed number of taps or not, and the embodiments of the present application do not limit this. The CIR parameters of snapshot1 shown in Table 8b are shown by taking non-grouping as an example, so Table 8b shows the N_tap taps in snapshot1 respectively, and the CIR parameters of snapshot2 shown in Table 8b need to be grouped in units of a fixed number of taps, so Table 8b does not show the N_tap taps included in snapshot2 one by one.

[0163] The CIR parameter information shown in Table 8b is shown as an example including CIR reference information (i.e., the perceptual measurement result of the reference sampling unit). Exemplarily, the CIR parameter information shown in Table 8b may not include CIR reference information. In this case, the CIR reference information in the previous feedback information with CIR reference information may be used as the CIR reference information in this feedback information. If this feedback does not require CIR reference information (i.e., the CIR parameter information does not include CIR parameter information), snapshot 1 also feeds back the perceptual measurement result in the same manner as other snapshots, i.e., the perceptual measurement result in snapshot 1 is fed back in the form of a difference. It can be understood that the description of the CIR reference information is also applicable to Tables 8c and 8d, and will not be repeated below.

[0164] In a possible implementation, when the compression method includes a compression method with a variable number of sampling points as units, the feedback information also includes the following information: the number of groups of a sampling unit, the starting sampling point and the ending sampling point of each group; or, the feedback information also includes the following information: the number of groups of a sampling unit, the starting sampling point of each group and the number of sampling points of each group. That is, by including the above information, the transmitting end can clearly know the grouping of the perception measurement result by the receiving end when obtaining the feedback information, so as to quickly restore the original CIR parameter.

[0165] Exemplarily, when the compression mode value is 10, the CIR parameter information may be as shown in Table 8c.

[0166] Table 8c

[0167]

[0168]

[0169] It should be noted that Table 8c is shown by taking a snapshot being divided into M groups as an example, where M is a positive integer. When sampling the snapshot, since the sampling frequency applicable to the receiving end is fixed, the delay of each tap in the snapshot is determined. Therefore, the difference shown in the above text of the present application can be generally understood as: the difference between a delayed Tap and the Tap of the delay in the snapshot serving as the CIR reference information. The grouping method of snapshot1 shown in Table 8c is also applicable to the grouping method of the remaining M-1 snapshots. That is, it is assumed that in a feedback information, the tap grouping method of all snapshots remains unchanged. Alternatively, the tap grouping method of the snapshot in this feedback information may be the same as the tap grouping method of the CIR reference information in the previous feedback information with CIR reference information.

[0170] Optionally, the feedback information also includes information of a second bitmap, and each bit in the second bitmap is used to indicate whether the perception measurement result of the corresponding tap is fed back. In the relevant description of step 301, there is the following method: if only a small number of taps in a certain group have a difference with the taps with the same delay in the reference sampling unit that is greater than the first threshold, then only a small number of taps in this group can be fed back. In this case, the value of the bit corresponding to the certain group in the first bitmap can be 1, that is, at least one of the differences between all taps in the certain group and the corresponding Tap in the reference sampling unit is greater than the first threshold. Each bit in the second bitmap can be used to indicate whether the perception measurement result of the corresponding tap in the certain group. The bit length of the above-mentioned first bitmap is determined based on the total number of groups, or the bit length of the above-mentioned first bitmap can be determined based on the number of sampling points in each sampling unit and the number of taps in each group. The bit length of the second bitmap can be determined based on the compression method: for example, when the compression method is based on a fixed number of sampling points, the bit length of the second bitmap can be a fixed number; for example, when the compression method is based on a variable number of sampling points, the bit length of the second bitmap can be determined based on the number of taps in each group when each snapshot is grouped. By adding a second bitmap, the bits occupied by the CIR parameter information in each snapshot can be simplified with a small number of bits of the second bitmap, thereby further reducing the signaling overhead. It can be understood that the second bitmap shown in the embodiment of the present application can be applied to Table 8b and Table 8c, but the second bitmap is exemplarily shown below using Table 8c as an example, but it should not be understood as a limitation on the embodiment of the present application. For example, according to Table 8b, the second bitmap can be added after adaptive modification, and it will not be shown one by one here.

[0171] For example, when the compression mode value is 10, the CIR parameter information may be as shown in Table 8d. For the description of Table 8d, please refer to Table 8c, etc., which will not be described in detail here.

[0172] Table 8d

[0173]

[0174]

[0175]

[0176] It can be understood that the group corresponding to the bit with a bit value of 1 in the first bit map can have a second bit map. Therefore, Table 8d is only exemplarily shown as group 1 and group M in snapshot 2 with the corresponding bit value of 1 in the first bit map. However, it should not be understood as a limitation on the embodiments of the present application.

[0177] It can be understood that the CIR parameter information shown in Tables 8a to 8d of the present application can indicate the path loss information in the form of amplitude and phase, or indicate the path loss information in the form of in-phase components and orthogonal components, and the embodiments of the present application are not limited. Optionally, the feedback information may also include information indicating the data mode of the path loss information. For example, if the value of the field where the data mode indicating the path loss information is located is 0, it means that the path loss information is fed back in the form of in-phase components and orthogonal components (it can also be called the path loss information is fed back in the form of real and imaginary parts), and if the value of the field where the data mode indicating the path loss information is located is 1, it means that the path loss information is fed back in the form of amplitude and phase.

[0178] By including information indicating the data mode of the path loss information in the feedback information, the form of the path loss information can be made more diverse, and different forms of feedback of perception information can be effectively selected for different application scenarios. For example, when the bit width of the path loss information is small (i.e., the occupied bit length), the feedback accuracy of amplitude and phase is higher.

[0179] It should be noted that when the second bitmap is included in the feedback information, the first bitmap may not be included in the feedback information. Exemplarily, when all the bits in the second bitmap have a value of 0, it may indicate that the perception measurement result of the group corresponding to the second bitmap has not been fed back. If all the bits of a second bitmap have a value of 0, the transmitter may continue to read the second bitmap corresponding to the subsequent group. Exemplarily, when one or more bits in the second bitmap have a value of 1, it indicates that the perception measurement result of the group corresponding to the second bitmap is fed back. In other words, the transmitter can know whether the group corresponding to each second bitmap has fed back the perception measurement result based on the second bitmap.

[0180] Of course, in order to facilitate the sending end to know whether the feedback information includes the first bitmap and the second bitmap, the feedback information may optionally include information for indicating the bitmap included in the feedback information, that is, the information may indicate that the feedback information includes the first bitmap; or includes the second bitmap; or includes the first bitmap and the second bitmap. They are not shown one by one here.

[0181] Table 9 is a comparative diagram provided by an embodiment of the present application when the compression method includes no compression and a compression method with a fixed number of sampling points as the unit. In an office environment, a moving chair is selected as the perception target. The perception measurement results of 10 snapshots are reported using the above two compression methods. As shown in Table 9, when the compression method is no compression, the perception measurement results in these 10 snapshots require a length of 3000 bytes (the real and imaginary parts of each Tap are represented by 12 bits), and the compression rate is 1, that is, no compression. When the compression method is a compression method with a fixed number of sampling points as units (each group of Taps in this simulation contains only 1, the real and imaginary parts of the reference Tap are both represented by 12 bits, and the real and imaginary differences of the differential information are both represented by 8 bits), when the first threshold is 10-5 (ie 1e-5), the perception measurement results within these 10 snapshots require a length of 985 bytes, and the compression rate is 0.3283; when the first threshold is 5*10-5 (ie 5e-5), the perception measurement results within these 10 snapshots require a length of 550 bytes, and the compression rate is 0.1833. The lower the compression rate, the smaller the bit overhead used when feeding back the CIR parameters. As can be seen from Table 9, the method provided in the present application effectively reduces the signaling overhead of the CIR parameters.

[0182] Table 9

[0183]

[0184] Figure 8is a schematic diagram of a simulation result provided by an embodiment of the present application. In this simulation diagram (the simulation conditions are consistent with Table 9), the black circle line indicates no compression (such as Figure 8 In the case of No compression, the black asterisk line represents the compression method of sampling a fixed number of sampling points, such as the number of taps in each group is 1 and the threshold is 1e-5. Figure 8 The perceptual measurement results shown are obtained by single antenna measurement. When the compression method is no compression, the horizontal axis represents the bit width of the real and imaginary parts, which can also be understood as the bit width of the in-phase component and the quadrature component (IQ bitwidth). When the compression method of sampling a fixed number of sampling points is adopted, the horizontal axis represents the bit width of the real and imaginary parts of the differential information, or the bit width of the in-phase component and the quadrature component of the differential information (such as Figure 8 The reference information in this solution uses 12 bits. The ordinate represents the maximum quantization error. Figure 8 It can be seen that when 12 bits are used for quantization, the maximum quantization error of the uncompressed scheme is 2e-5, while when this scheme uses 8 bits to represent the real and imaginary parts of the differential information, the maximum quantization error is 1.6e-5. Therefore, this scheme significantly reduces the feedback overhead without increasing the quantization error.

[0185] In an embodiment of the present application, the transmitting end sends control information to the receiving end, so that the receiving end can process the original CIR parameter based on the control information, such as obtaining CIR parameter information based on a threshold feedback method, that is, the CIR parameter information is obtained based on a threshold feedback method. By processing the perception measurement results (such as processing based on a threshold feedback method), obtaining CIR parameter information, and then feeding back the CIR parameter information, the signaling overhead can be effectively reduced. At the same time, the receiving end processes based on the control information sent by the transmitting end, and then the receiving end sends feedback information, which effectively improves the process of perception based on UWB pulses, and also effectively guarantees the communication efficiency of both communicating parties.

[0186] Figure 3In the method shown, in a possible implementation, the control information also includes second control information, and the second control information may include information indicating the number of time sub-units included in a time unit. The one time unit can be understood as the interaction duration of a control information and a feedback information. Alternatively, the process of the receiving end completing an independent perception measurement and reporting of feedback information can be called a time unit. Alternatively, a time unit can be understood as a period of time for the sending end to initiate a perception process and obtain feedback information. Exemplarily, a time unit may include multiple time sub-units. That is, multiple time sub-units may form a time unit. For example, a time unit may include T time sub-units, where T is a positive integer.

[0187] As an example, the number of time subunits can be used to indicate the period of feedback information, such as the number of time subunits is proportional to the period of feedback information. As an example, the number of time subunits can also be used to indicate the sending time of feedback information, such as the sending time of feedback information can be located in the last one or more time subunits in a time unit. As an example, the number of time subunits can also be used to indicate the period of the perception process performed by the transmitter and the receiver. For example, the time unit can also be called a sensing time unit or a sensing round, and the time subunit can also be called a sensing time subunit or a sensing slot. The embodiments of the present application do not limit the specific names of the time unit and the time subunit. It can be understood that the following description of the sensing round also applies to the sensing time unit, and the description of the sensing slot also applies to the sensing time subunit.

[0188] Since the transmitting end and the receiving end can perform multiple sensing processes, a time block is also provided in the embodiment of the present application. Figure 5 As shown in FIG. 1 , a time block may include N time units, where N is a positive integer, and a time unit may include M time subunits. It is understood that a time block may also be referred to as a sensing time block or a UWB-based sensing time block or a sensing block, etc. The specific name of the time block is not limited in the embodiment of the present application. For ease of description, the following will be referred to as Figure 6 The sensing block, sensing round and sensing time slot shown in the figure are used as examples to illustrate the method provided by the embodiment of the present application. Figure 6 For instructions, please refer to Figure 5 .

[0189] Exemplarily, a perception block can be a period of time specifically used for perception, and each perception block can be divided into several perception rounds, each of which can be used to complete an independent perception measurement and report the results. And each perception round can be divided into several perception time slots, and each perception time slot can be used to transmit at least one perception packet (for perception). A perception time slot can correspond to one or more perception packets, so that the receiving end can perceive the target multiple times in one perception round. Based on the perception packet, the receiving end can obtain path loss information, delay, AOZ, AOA and other information. It can be understood that each perception packet can include one or more UWB pulses.

[0190] Exemplarily, the content of the second control information may be as shown in Table 10a. As shown in Table 10a, the second control information may include the duration of the perception block, the duration of the perception round, the duration of the perception time slot, and the pulse repetition frequency (PRF). The duration of each perception time slot may be the same, and the duration of each perception round may be the same. The duration shown in the embodiment of the present application may also be referred to as duration or duration or time length, etc. The number of perception blocks included in a perception round may be known through the duration of the perception block and the duration of the perception round, such as Figure 6 As shown, a sensing block may include N sensing rounds, where N is a positive integer. The number of sensing time slots included in a sensing round can be obtained by the duration of the sensing round and the duration of the sensing time slot, such as Figure 6 As shown, one sensing round may include T sensing time slots, where T is a positive integer.

[0191] Table 10a

[0192]

[0193]

[0194] Combination Figure 3 In the method shown, the perception measurement result fed back by the above feedback information may be the perception measurement result obtained by the receiving end perceiving the target in a perception round. That is, the feedback information fed back may be the perception measurement result obtained in this perception round. The feedback information fed back in this perception round may include the perception measurement result in the reference sampling unit in this perception round, such as the perception measurement result in snapshot1 may be used as reference information for the perception measurement result fed back in this perception round. Alternatively, the feedback information fed back in this perception round may not include the perception measurement result in the reference sampling unit, such as using the perception measurement result in the reference sampling unit included in the feedback information fed back in the previous round of perception as the reference information for the perception measurement result fed back in this perception round.

[0195] Combination Figure 3 In the method shown, the perception measurement result fed back by the above feedback information may also be the perception measurement result obtained by the receiving end in multiple perception rounds of perception of the target. That is, the receiving end may feed back the perception measurement results in multiple perception rounds through one feedback information. In this case, the feedback information may also include reference information or may not include reference information, which will not be described in detail here.

[0196] Since the transmitter sends control information in each perception round, the second control information may also include information indicating whether the perception measurement result is fed back in this perception round. By indicating whether the perception measurement result is fed back in this perception round, the receiving end can effectively know whether the perception measurement result is fed back in this perception round. If the perception measurement result does not need to be fed back in this perception round, the receiving end may first cache the perception measurement result of this perception round, and when receiving an indication that the perception measurement result needs to be fed back, the perception measurement result that has not been fed back is fed back to the transmitter in a feedback information. Therefore, in Tables 8a to 8d, the indication of the perception round may also be added, such as the leftmost in Tables 8a to 8d may be replaced by: snapshot of perception round N_round, tap of N_snapshot, CIR of N_tap, Num_round represents the number of perception rounds, N_snapshot represents the number of snapshots in each perception round, and N_tap represents the number of taps in each snapshot. Assume that the number of snapshots included in each perception round is the same, and the number of taps included in each snapshot is the same.

[0197] Exemplarily, in combination with Table 10a and the above information indicating whether the current perception round feeds back the perception measurement result, the second control information may be as shown in Table 10b.

[0198] Table 10b

[0199]

[0200] It can be understood that the last two rows in Table 10b are parallel schemes. Only one of the schemes can be used in a certain feedback information, which does not mean that both schemes must exist. For example, when the value of the field where the CIR update indication is located is 00, both schemes indicate the differential information of the feedback CIR, that is, the feedback information does not need to include the perceived measurement results of the reference sampling unit, that is, the reference information in the previous feedback information with reference information is the reference information of this feedback information. When the CIR update indication is 00, the measurement report stage is as follows Figure 7bThe feedback information indicates the perception measurement result obtained by the receiving end through differential information, such as the CIR parameter information is determined based on the reference information and the original CIR parameter in the feedback information before the feedback information.

[0201] For example, when the value of the CIR update indication field is 01, both schemes indicate feedback of CIR difference information and difference value. Figure 7c The feedback information indicates the perception measurement result obtained by the receiving end through the difference information and the reference information, such as the CIR parameter information is determined based on the reference information and the original CIR parameter in the feedback information.

[0202] When the value of the field where the CIR update indication is located is 00 or 01, the corresponding compression method may include any one of a threshold-based compression method, a snapshot-based compression method, or a clustering-based compression method. At the same time, the first control information shown in Table 6 may also be added with information indicating any one of a threshold-based compression method, a snapshot-based compression method, or a clustering-based compression method. If the added information indicates a threshold-based compression method, the first control information may be as shown in Table 6; if the added information indicates a snapshot-based compression method or a cluster-based compression method, the embodiment of the present application does not limit other contents of the first control information. For example, when the value of the field where the CIR update indication is located is 10, both schemes indicate that the CIR is not fed back in this perception round, that is, the perception measurement result may not be fed back in the perception round where the control information is located. For example, when the value of the field where the CIR update indication is located is 11, the first scheme may be reserved, and the second scheme indicates that the compression method used in this perception round is a threshold-based compression method. Therefore, the corresponding first control information may be as shown in Table 6.

[0203] For example, the snapshot-based compression method is described as follows:

[0204] For example, a snapshot in any perception round of one or more perception rounds that needs to be fed back by one of the one or more antennas can be used as a reference sampling unit (such as snapshot 1 of the first antenna in the antenna used when measuring the perception measurement result), and the parameter information in the reference sampling unit is used as reference information. For example, the receiving end receives UWB signals through multiple antennas, and it needs to feed back the perception measurement results in this perception round (such as a perception round). Therefore, the receiving end can use the perception measurement results in the first snapshot in the local perception round that needs to be fed back by a certain antenna as reference information. The difference between the perception measurement results in other snapshots and the reference information is used as differential information.

[0205] An exemplary cluster-based compression method is described as follows:

[0206] The CIRs of all snapshots are clustered, for example, the path loss information can be clustered according to the dynamic range, K-means (K-mean) or density-based spatial clustering of applications with noise (DBSCAN) in a noisy environment. The specific implementation method of clustering is not limited in the embodiment of the present application. Then, a tap (i.e., reference Tap) is selected in each cluster as a reference sampling unit, and the perceptual measurement results in the reference sampling unit are used as reference information. The difference between the remaining taps (i.e., NormalTap) in each cluster and the tap used as reference information (referring to the difference in the parameters of the corresponding tap) is used as differential information. For example, a tap can be selected in cluster 1 as the reference information of cluster 1, so that the other taps in cluster 1 are differentiated from the reference tap, and a tap can be selected in cluster 2 as the reference information of cluster 2, so that the other taps in cluster 2 are differentiated from the reference tap. They are not listed one by one here.

[0207] Figure 7a Schematic diagram of a perception process performed in a perception wheel provided in an embodiment of the present application. Figure 7aAs shown, in the sensing control phase, the transmitter can send control information (also referred to as sensing control message) to the receiver; in the sensing phase, the transmitter can send multiple sensing packets to the receiver; in the measurement report phase, the receiver can send feedback information (also referred to as measurement information or measurement report information, etc.) to the transmitter. The sensing control phase can correspond to one or more sensing time slots, the sensing phase can correspond to multiple sensing time slots, and the measurement report phase can correspond to one or more sensing time slots. Figure 7a Where 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.

[0208] In a possible implementation, when the target moves faster, the receiving end can provide feedback more frequently to facilitate the sending end to obtain information related to the target in a timely manner. When the target moves slower, the feedback frequency of the perception measurement results can be reduced. Since the feedback information needs to be fed back in the last or last multiple perception time slots in a perception round, the number of perception time slots included in a perception round in the control information can indicate the period of the feedback information or the feedback frequency of the feedback information. The number of perception time slots is proportional to the period of the feedback information, and the number of perception time slots is inversely proportional to the feedback frequency of the feedback information. The more the number of perception time slots, the longer the period of the feedback information, or the lower the feedback frequency of the feedback information.

[0209] For example, when the transmitting end requires the receiving end to feed back the sensing measurement results more frequently, the number of sensing time slots included in a sensing round indicated in the control information can be reduced, so that the period of the feedback information becomes shorter or the feedback frequency of the feedback information increases. Exemplarily, the transmitting end can obtain the relationship between the period of the feedback information and the change frequency of the target through a certain detection algorithm, so that after receiving the feedback information, it determines the feedback period of the subsequent feedback information according to the detection algorithm.

[0210] In the above-mentioned various implementations, where one of the implementations is not described in detail, reference can be made to other implementations, and they will not be described in detail here.

[0211] As can be seen from the above, the feedback information in the embodiment of the present application includes the first bitmap and / or the second bitmap, so the first control information can also be understood as being used to indicate that the perception measurement result is fed back in a bitmap-based manner. Feedback of the perception measurement result based on the bitmap shown in the embodiment of the present application may include: feedback of differential perception measurement results based on a bitmap (such as feedback of the original CIR parameter based on a bitmap and reference information), or feedback of non-differential perception measurement results based on a bitmap (i.e., feedback of the original CIR parameter based on a bitmap).

[0212] As an example, the first control information may include indication information, where the indication information is used to indicate whether to feed back the perception measurement result based on a bitmap.

[0213] Exemplarily, as shown in Table 11, the first control information may include indication information.

[0214] Table 11

[0215] Indication value describe 0 CIR feedback is not performed using bitmaps 1 CIR feedback using bitmap

[0216] For example, when the value of the indication information is 0, it means that the perception measurement result is not fed back in the form of a bit map (or the CIR feedback is not performed in the form of a bit map); for example, when the value of the indication information is 1, it means that the perception measurement result is fed back in the form of a bit map (or the CIR feedback is performed in the form of a bit map).

[0217] As another example, the first control information may not include indication information. For example, the first control information may be used to indicate that the perception measurement result is fed back in a bitmap-based manner.

[0218] As shown above, the first control information may include information about the first threshold. Exemplarily, the first control information may include multiple first thresholds. After receiving the first control information, the receiving end may select a first threshold from the multiple first thresholds. In this case, the feedback information may include the first threshold selected by the receiving end. Exemplarily, the first threshold may be included in the first control information or may be determined by the receiving end. For example, the value of the first threshold may also be related to the thermal noise P at the receiving end. n=kTB is proportional, where k represents the Boltzmann constant, T represents the Kelvin temperature (generally 290K at room temperature), and B represents the signal bandwidth. For example, when the bandwidth B is large or the temperature T is high, the first threshold value can be set larger, and when the bandwidth B is small or the temperature T is low, the first threshold value can be set smaller. In the case where the first threshold is determined by the receiving end, the feedback information may include information about the first threshold. Of course, the first control information may also include a first threshold. The first threshold shown in the embodiment of the present application may be greater than or equal to 0.

[0219] Exemplarily, in addition to determining whether to feed back the perceptual measurement results in one or more non-reference sampling units based on the perceptual measurement results in the reference sampling unit, the first threshold can also be used to determine whether to feed back the perceptual measurement results of a certain group of sampling points in a sampling unit. The perceptual measurement results of a certain group of sampling points can be the original CIR parameter information or the CIR parameter information obtained based on the difference. Alternatively, the first threshold can also be used to determine whether to feed back the perceptual measurement results of certain sampling points corresponding to the reference path (as described below). Figures 12a to 12d ).

[0220] Exemplarily, since the feedback information can feed back the perception measurement result based on the bitmap, the first control information can also include the length information of the bitmap and the position information of the corresponding sampling point. Exemplarily, the length information of the bitmap can include the window length (W length ), the corresponding sampling point position information includes: reference path (or referred to as the position of the reference path, reference sampling point, etc.), the window offset (W) of the starting position of the window relative to the reference path offset ) (or referred to as offset). Optionally, the first control information may also include a sampling rate fs. The sampling rate may be used to determine the time interval Ts between adjacent sampling points, such as Ts=1 / fs. For example, Fig.12a , Figure 12b and Fig.12d As shown, the location of the reference sampling point may include the location of the earliest arriving path, or, as Fig.12cAs shown, the position of the reference sampling point may include the position of the strongest arrival path. It is understandable that the position of the strongest arrival path may be within the window or outside the window, and the embodiment of the present application does not limit this. In the embodiment of the present application, the method for obtaining the strongest arrival path or the earliest arrival path is used as a feasible example, as shown below: when the communicating parties perform the perception measurement for the first time, the length of the window may be greater than or equal to a certain value, so that the receiving end can know the approximate position of the strongest arrival path or the earliest arrival path (or the approximate range of the target can also be known), that is, the prior information is known. Then, based on the prior information, the subsequent window can continue to be adjusted, such as being less than the above value. The embodiment of the present application does not limit the specific value of the length of the window. For example, the length of the window may be a fixed value, such as a compression method with a fixed number of sampling points as a unit (or a fixed number of sampling points as feedback). For example, the length of the window may be a variable value, such as a compression method with a variable number of sampling points as a unit (or a variable number of sampling points as feedback). For the specific description of the feedback method, please refer to the above, which will not be described in detail here.

[0221] Exemplarily, when the perception measurement result is fed back in a windowed manner, as an example, when the first control information includes the length of the bitmap and the position information of the corresponding sampling points, the feedback information may not include the length information. As another example, when the first control information does not include the length of the bitmap and the position information of the corresponding sampling points, the feedback information may include the length of the bitmap and the position information of the corresponding sampling points. As yet another example, regardless of whether the first control information includes the above information, the feedback information may include the length of the bitmap and the position information of the corresponding sampling points.

[0222] Exemplarily, since the feedback information may include two bitmaps, the first control information may also include N and P, where N may be the total number of taps that need to be fed back (when feedback is provided in a windowed manner, N is equal to the window length), and P is the number of groups. For example, the receiving end may divide N taps into P groups based on the first control information, each group containing M taps. When P cannot be divided by N, N may be padded with an integer multiple of the value P (i.e., in the bitmap corresponding to the last group, the bits representing the last PQ Taps are 0, and Q is N modulo P), and then divided into P groups. Exemplarily, when the first control information includes information about N and P, the feedback information may not include information about N and P, or, when the first control information does not include information about N and P, the feedback information may include information about N and P, or, regardless of whether the first control information includes information about N and P, the feedback information may include information about N and P.

[0223] As shown above, the first control information may include information on the compression method, and based on the above Table 4, Table 12 may be further obtained.

[0224] Table 12

[0225]

[0226] The set 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 the set of taps can be equal to the length of the window, that is, N=W. length Exemplarily, all taps in the group of taps may be included in one snapshot.

[0227] As an example, if a tap in a snapshot (which may be a windowed CIR (such as a CIR determined based on the window length and window offset shown above) or an unwindowed CIR) is less than the first threshold, the corresponding tap will not be fed back, or the perception measurement result corresponding to the tap (such as path loss information and delay, or may also include AOA and ZOA) will not be fed back. In other words, when it is determined not to feed back the perception measurement result of a certain tap, it means that the amplitude corresponding to the tap is too small and has almost no effect on the perception result, so it can be not fed back, effectively reducing the signaling overhead, and does not affect the transmitter's acquisition of target-related information. It can be understood that the description of the tap being less than the first threshold shown in the embodiment of the present application can be understood as: the CIR parameter corresponding to the tap is less than the first threshold.

[0228] As another example, the taps in a snapshot (which can be a windowed CIR or a non-windowed CIR) are divided into P groups, each group containing M taps. If T taps in a group are smaller than the first threshold, the taps of the corresponding group will not be fed back, or the perception measurement results corresponding to this group (such as path loss information and delay, or AOA and ZOA) will not be fed back. In other words, when it is determined not to feed back the perception measurement results of the taps in a certain group, it means that the amplitude corresponding to the taps in this group is too small and has almost no effect on the perception results, so it can be not fed back, effectively reducing the signaling overhead, and it does not affect the transmitter to obtain information related to the target. The above T can be a positive integer less than or equal to M.

[0229] For example, Fig.12a and Figure 12b As shown, the feedback information may include a first bitmap, which may be used to indicate whether to feed back the perception measurement result of the corresponding tap in the group. For example, the receiving end may determine the starting position of the 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 length of the window and the starting position of the window. The tap in the window is the tap in the group. Fig.12aAs shown in , the first tap, the second tap, the third tap, the fourth tap, the seventh tap, the ninth tap and the tenth tap in the window are all greater than the first threshold, so the value of the first bitmap can be 1111 001011. Figure 12b As shown, after the receiving end determines the position of the window, it can also group the taps in the window, such as grouping two taps into one group (just an example). For example, the first group of taps, the second group of taps, and the fifth group of taps are all greater than the first threshold, so the value of the first bitmap can be 11001.

[0230] As another example, the taps in a snapshot (which can be a windowed CIR or an unwindowed CIR) are divided into P groups, each group containing M taps. A two-bit bitmap is used to indicate CIR parameter information. When any tap in a group is greater than the first threshold, the corresponding group is fed back; further, it is determined which specific tap in the group is greater than the first threshold, and the corresponding tap in the group is fed back. In other words, when it is determined not to feed back the perception measurement results of the taps in a certain group, it means that the amplitude corresponding to the taps in this group is too small and has almost no effect on the perception results, so it can be not fed back, effectively reducing the signaling overhead, and it does not affect the transmitter to obtain information related to the target.

[0231] For example, Fig.12d As shown, the value of the first bitmap is 10011, indicating that the receiving end feeds back the taps in the first, fourth and fifth groups, and the value of the second bitmap is 11 10 11, indicating whether the taos in the first, fourth and fifth groups are fed back respectively.

[0232] Exemplarily, since the same parameters of CIR corresponding to different taps (such as path loss, phase, or orthogonal component and in-phase component of CIR corresponding to different taps) are quantized with the same bit width, but their corresponding amplitude ranges are different, they can be normalized with a scaling factor β, and the scaling factor is related to the transceiver antenna pair, and each transceiver antenna pair requires a scaling factor. Based on this, the table corresponding to Table 8a above can be adaptively modified as shown in Table 13a.

[0233] Table 13a

[0234]

[0235] Exemplarily, the table corresponding to the above Table 8b can be adaptively modified as shown in Table 13b.

[0236] Table 13b

[0237]

[0238]

[0239]

[0240] Exemplarily, the table corresponding to the above Table 8c can be adaptively modified as shown in Table 13c.

[0241] Table 13c

[0242]

[0243]

[0244]

[0245] Exemplarily, the table corresponding to Table 8d above can be adaptively modified as shown in Table 13d.

[0246] Table 13d

[0247]

[0248]

[0249]

[0250] The following is an introduction to the communication device provided in the embodiments of the present application.

[0251] The present application divides the functional modules of the communication device according to the above method embodiment. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. Figures 9 to 11 The communication device according to the embodiment of the present application is described in detail.

[0252] Fig. 9 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application, such as Fig. 9 As shown, the communication device includes a processing unit 901 and a transceiver unit 902 .

[0253] In some embodiments of the present application, the communication device may be the transmitting end or chip shown above, and the chip may be applied to the transmitting end, etc. That is, the communication device may be used to execute the steps or functions executed by the transmitting end in the above method embodiments, etc.

[0254] The transceiver unit 902 is used to output control information and input feedback information.

[0255] Exemplarily, the processing unit 901 is used to determine control information; and output the control information through the transceiver unit 902 and input feedback information.

[0256] It is understandable that the processing unit 901 can also process according to the feedback information to obtain information such as the speed, distance or attenuation of the target.

[0257] It can be understood that the specific description of the transceiver unit and the processing unit shown in the embodiment of the present application is only an example. For the specific functions or execution steps of the transceiver unit and the processing unit, reference can be made to the above-mentioned method embodiment, which will not be described in detail here.

[0258] Reuse Fig. 9 In some other embodiments of the present application, the communication device may be the receiving end shown above or a chip in the receiving end, etc. That is, the communication device may be used to execute the steps or functions executed by the receiving end in the above method embodiment.

[0259] For example, the transceiver unit 902 is used to input control information; the transceiver unit 902 is also used to output feedback information.

[0260] Exemplarily, the processing unit 901 is configured to determine feedback information according to the control information.

[0261] It can be understood that the specific description of the transceiver unit and the processing unit shown in the embodiment of the present application is only an example. For the specific functions or execution steps of the transceiver unit and the processing unit, reference can be made to the above-mentioned method embodiment, which will not be described in detail here.

[0262] In the above embodiments, descriptions of control information, feedback information, first control information, second control information, first bit map, second bit map, reference sampling unit, etc. can also be referred to the introduction in the above method embodiments, and will not be described in detail here.

[0263] The above describes the transmitting end and receiving end of the embodiment of the present application. The following describes possible product forms of the transmitting end and receiving end. Fig. 9 Any product having the functions of the transmitter described above, or any product having the functions of the transmitter described above Fig. 9 Any form of product with the functions of the receiving end described above falls within the protection scope of the embodiments of the present application. It should also be understood that the following description is only an example and does not limit the product forms of the transmitting end and the receiving end of the embodiments of the present application to this.

[0264] In one possible implementation, Fig. 9In the communication device shown, the processing unit 901 may be one or more processors, the transceiver unit 902 may be a transceiver, or the transceiver unit 902 may also be a sending unit and a receiving unit, the sending unit may be a transmitter, the receiving unit may be a receiver, and the sending unit and the receiving unit are integrated into one device, such as a transceiver. In the embodiment of the present application, the processor and the transceiver may be coupled, etc., and the embodiment of the present application does not limit the connection mode of the processor and the transceiver. In the process of executing the above method, the process of sending information in the above method can be understood as the process of outputting the above information by the processor. When outputting the above information, the processor outputs the above information to the transceiver so that it is transmitted by the transceiver. After the above information is output by the processor, it may also need to be processed in other ways before it reaches the transceiver. Similarly, the process of receiving information in the above method can be understood as the process of the processor receiving the input information. When the processor receives the input information, the transceiver receives the above information and inputs it into the processor. Furthermore, after the transceiver receives the above information, the above information may need to be processed in other ways before it is input into the processor.

[0265] like Fig.10 As shown, the communication device 100 includes one or more processors 1020 and a transceiver 1010 .

[0266] Exemplarily, when the communication device is used to execute the steps, methods or functions performed by the above-mentioned transmitting end, the processor 1020 is used to determine control information; the transceiver 1010 is used to send control information to the receiving end, and receive feedback information from the receiving end.

[0267] Exemplarily, when the communication device is used to execute the steps, methods or functions performed by the above-mentioned receiving end, the transceiver 1010 is used to receive control information from the sending end; the processor 1020 is used to determine feedback information based on the control information; the transceiver 1010 is also used to send feedback information to the sending end.

[0268] In the above embodiments, descriptions of control information, feedback information, first control information, second control information, first bit map, second bit map, reference sampling unit, etc. can also be referred to the introduction in the above method embodiments, and will not be described in detail here.

[0269] exist Fig.10 In various implementations of the communication device shown, the transceiver may include a receiver and a transmitter, wherein the receiver is used to perform a receiving function (or operation) and the transmitter is used to perform a transmitting function (or operation). The transceiver is used to communicate with other devices / devices through a transmission medium.

[0270] Optionally, the communication device 100 may further include one or more memories 1030 for storing program instructions and / or data, etc. The memory 1030 is coupled to the processor 1020. The coupling in the embodiment of the present application is an indirect coupling or communication connection between devices, units or modules, which may be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. The processor 1020 may operate in conjunction with the memory 1030. The processor 1020 may execute program instructions stored in the memory 1030. Optionally, at least one of the one or more memories may be included in the processor.

[0271] The specific connection medium between the transceiver 1010, the processor 1020 and the memory 1030 is not limited in the embodiment of the present application. Fig.10 In the embodiment, the memory 1030, the processor 1020 and the transceiver 1010 are connected via a bus 1040. Fig.10 The connections between the other components are shown in bold lines, which are only for illustration and are not intended to be limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig.10 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0272] In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc., and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor, etc.

[0273] In the embodiment of the present application, the memory may include, but is not limited to, non-volatile memory such as a hard disk drive (HDD) or a solid-state drive (SSD), a random access memory (RAM), an erasable programmable read-only memory (EPROM), a read-only memory (ROM) or a portable read-only memory (CD-ROM), etc. The memory is any storage medium that can be used to carry or store program codes in the form of instructions or data structures and can be read and / or written by a computer (such as the communication device shown in the present application), but is not limited thereto. The memory in the embodiment of the present application can also be a circuit or any other device that can realize a storage function, for storing program instructions and / or data. Exemplarily, for the receiving end, reference information, i.e., the perception measurement results in the sampling unit, can be stored in the memory. Optionally, for the sending end, since it needs to parse the CIR parameter information according to the reference information, the reference information can also be stored in its memory.

[0274] Exemplarily, the processor 1020 is mainly used to process the communication protocol and communication data, and to control the entire communication device, execute the software program, and process the data of the software program. The memory 1030 is mainly used to store the software program and data. The transceiver 1010 may include a control circuit and an antenna. The control circuit is mainly used to convert the baseband signal and the radio frequency signal and process the radio frequency signal. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. The input and output devices, such as a touch screen, a display screen, a keyboard, etc., are mainly used to receive data input by the user and output data to the user.

[0275] When the communication device is turned 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. When data needs to be sent wirelessly, the processor 1020 performs baseband processing on the data to be sent, and outputs the baseband signal to the RF circuit. The RF circuit performs RF processing on the baseband signal and then sends the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the communication device, the RF circuit receives the RF signal through the antenna, converts the RF 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.

[0276] In another implementation, the RF circuit and antenna may be arranged independently of the processor performing baseband processing. For example, in a distributed scenario, the RF circuit and antenna may be arranged remotely from the communication device.

[0277] It is understandable that the communication device shown in the embodiment of the present application may also have Fig.10 The embodiments of the present application do not limit the number of components and the like. The methods executed by the processor and the transceiver shown above are only examples, and the specific steps executed by the processor and the transceiver can refer to the methods described above.

[0278] In another possible implementation, Fig. 9 In the communication device shown, the processing unit 901 may be one or more logic circuits, and the transceiver unit 902 may be an input / output interface, or a communication interface, or an interface circuit, or an interface, etc. Alternatively, the transceiver unit 902 may be a sending unit and a receiving unit, the sending unit may be an output interface, the receiving unit may be an input interface, and the sending unit and the receiving unit may be integrated into one unit, such as an input / output interface. Fig.11 As shown, Fig.11 The communication device shown includes a logic circuit 1101 and an interface 1102. That is, the processing unit 901 can be implemented by the logic circuit 1101, and the transceiver unit 902 can be implemented by the interface 1102. The logic circuit 1101 can be a chip, a processing circuit, an integrated circuit or a system on chip (SoC) chip, etc., and the interface 1102 can be a communication interface, an input / output interface, a pin, etc. For example, Fig.11 The above communication device is used as an example of a chip, and the chip includes a logic circuit 1101 and an interface 1102. It can be understood that the chip shown in the embodiment of the present application may include a narrowband chip or an ultra-wideband chip, etc., which is not limited in the embodiment of the present application. The step of sending the perception packet as shown above can be performed by the ultra-wideband chip, and whether the remaining steps are performed by the ultra-wideband chip is not limited in the embodiment of the present application.

[0279] In the embodiment of the present application, the logic circuit and the interface may also be coupled to each other. The embodiment of the present application does not limit the specific connection method between the logic circuit and the interface.

[0280] Exemplarily, when the communication device is used to execute the method, function or step executed by the transmitting end, the logic circuit 1101 is used to determine the control information; the interface 1102 is used to output the control information and input the feedback information. The logic circuit 1101 is also used to process the feedback information to obtain information related to the target.

[0281] Exemplarily, when the communication device is used to execute the method, function or step executed by the above-mentioned receiving end, the interface 1102 is used to input control information; the logic circuit 1101 is used to determine feedback information according to the control information; and the interface 1102 is also used to output the feedback information.

[0282] It can be understood that the communication device shown in the embodiment of the present application can implement the method provided in the embodiment of the present application in the form of hardware, or can implement the method provided in the embodiment of the present application in the form of software, etc., and the embodiment of the present application is not limited to this.

[0283] In the above embodiments, descriptions of control information, feedback information, first control information, second control information, first bit map, second bit map, reference sampling unit, etc. can also be referred to the introduction in the above method embodiments, and will not be described in detail here.

[0284] for Fig.11 The specific implementation methods of the various embodiments shown can also refer to the above embodiments, which will not be described in detail here.

[0285] The present application also provides a wireless communication system, which includes a transmitting end and a receiving end. The transmitting end and the receiving end can be used to execute any of the above embodiments (such as Figure 3 ) in the method.

[0286] In addition, the present application also provides a computer program, which is used to implement the operations and / or processing performed by the sending end in the method provided by the present application.

[0287] The present application also provides a computer program, which is used to implement the operations and / or processing performed by the receiving end in the method provided by the present application.

[0288] The present application also provides a computer-readable storage medium, in which computer codes are stored. When the computer codes are executed on a computer, the computer executes the operations and / or processing performed by the sending end in the method provided by the present application.

[0289] The present application also provides a computer-readable storage medium, in which computer codes are stored. When the computer codes are executed on a computer, the computer executes the operations and / or processing performed by the receiving end in the method provided in the present application.

[0290] The present application also provides a computer program product, which includes a computer code or a computer program. When the computer code or the computer program runs on a computer, the operations and / or processing performed by the sending end in the method provided by the present application are executed.

[0291] The present application also provides a computer program product, which includes a computer code or a computer program. When the computer code or the computer program runs on a computer, the operations and / or processing performed by the receiving end in the method provided by the present application are executed.

[0292] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, or it can be an electrical, mechanical or other form of connection.

[0293] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the technical effects of the solutions provided in the embodiments of the present application.

[0294] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0295] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or partly contributed to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned readable storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc., and other media that can store program codes.

[0296] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for feedback of perception measurement results based on ultra-wideband UWB, characterized in that: The method comprises: Sending control information, where the control information includes first control information, where the first control information is used to instruct to feed back a perception measurement result in a bitmap-based manner; Feedback information is received, where the feedback information includes channel impulse response (CIR) parameter information, where the CIR parameter information is obtained by processing the perception measurement result based on the control information.

2. A method for feedback of perception measurement results based on ultra-wideband UWB, characterized in that: The method comprises: receiving control information, where the control information includes first control information, where the first control information is used to instruct to feed back a perception measurement result in a bitmap-based manner; Feedback information is sent, where the feedback information includes channel impulse response CIR parameter information, where the CIR parameter information is obtained by processing the perception measurement result based on the first control information.

3. The method according to claim 1 or 2, characterized in that: The first control information includes information of a first threshold, where the first threshold is used to instruct to process the perception measurement result based on the first threshold.

4. The method according to any one of claims 1 to 3, characterized in that: The first control information further includes information on a compression method, where the compression method includes any one of the following: no compression, compression using a fixed number of sampling points as a unit, and compression using a variable number of sampling points as a unit.

5. The method according to any one of claims 1 to 4, characterized in that: The first control information also includes information for indicating the length of the bitmap and location information of the corresponding sampling points.

6. The method according to claim 5, characterized in that The position information of the corresponding sampling point includes a reference path and an offset of a starting position of the sampling point relative to the reference path.

7. The method according to any one of claims 1 to 6, characterized in that: The feedback information includes a first bitmap, where each bit in the first bitmap is used to indicate whether to feed back a perception measurement result in a corresponding group.

8. The method according to claim 7, characterized in that The feedback information further includes a second bitmap, where each bit in the second bitmap is used to indicate whether to feed back the perception measurement results of the sampling points in the corresponding group.

9. The method according to claim 7 or 8, characterized in that: 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 when measuring the perception measurement result, and whether the perception measurement result in the reference sampling unit is stored.

10. A communication device, characterized in that: The device comprises: A transceiver unit, configured to send control information, wherein the control information includes first control information, and the first control information is used to indicate feedback of a perception measurement result in a bitmap-based manner; The transceiver unit is further used to receive feedback information, where the feedback information includes channel impulse response CIR parameter information, and the CIR parameter information is obtained by processing the perception measurement result based on the control information.

11. A communication device, characterized in that: The device comprises: A transceiver unit, configured to receive control information, where the control information includes first control information, where the first control information is used to instruct to feed back a perception measurement result in a bitmap-based manner; The transceiver unit is further used to send feedback information, where the feedback information includes channel impulse response CIR parameter information, and the CIR parameter information is obtained by processing the perception measurement result based on the first control information.

12. The device according to claim 10 or 11, characterized in that The first control information includes information of a first threshold, where the first threshold is used to instruct to process the perception measurement result based on the first threshold.

13. The device according to any one of claims 10 to 12, characterized in that: The first control information further includes information on a compression method, where the compression method includes any one of the following: no compression, compression using a fixed number of sampling points as a unit, and compression using a variable number of sampling points as a unit.

14. The device according to any one of claims 10 to 13, characterized in that: The first control information also includes information for indicating the length of the bitmap and location information of the corresponding sampling points.

15. The device according to claim 14, characterized in that The position information of the corresponding sampling point includes a reference path and an offset of a starting position of the sampling point relative to the reference path.

16. The device according to any one of claims 10 to 15, characterized in that: The feedback information includes a first bitmap, where each bit in the first bitmap is used to indicate whether to feed back a perception measurement result in a corresponding group.

17. The device according to claim 16, characterized in that The feedback information further includes a second bitmap, where each bit in the second bitmap is used to indicate whether to feed back the perception measurement results of the sampling points in the corresponding group.

18. The device according to claim 16 or 17, characterized in that 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 when measuring the perception measurement result, and whether the perception measurement result in the reference sampling unit is stored.

19. A communication device, characterized in that: including a processor and a memory; The memory is used to store instructions; The processor is configured to execute the instructions so that the method according to any one of claims 1 to 9 is performed.

20. A communication device, characterized in that: comprising a logic circuit and an interface, wherein the logic circuit and the interface are coupled; The interface is used to input and / or output code instructions, and the logic circuit is used to execute the code instructions so that the method according to any one of claims 1 to 9 is executed.

21. A computer-readable storage medium, characterized in that: The computer-readable storage medium is used to store a computer program. When the computer program is executed, the method according to any one of claims 1 to 9 is executed.

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