WO2023072130A1 - 感知测量方法以及相关装置 - Google Patents
感知测量方法以及相关装置 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present application relates to the field of communication technologies, and in particular to a perception measurement method and a related device.
- Ultra-Wide Band (UWB) technology is a wireless carrier communication technology that uses nanosecond-level non-sine wave narrow pulses to transmit data, so it occupies a wide spectrum. Because the non-sine wave narrow pulse is very narrow, and the radiation spectral density is extremely low. Therefore, the UWB wireless communication system has the advantages of strong multipath resolution capability, low power consumption, and strong confidentiality.
- UWB technology is known as one of the hotly discussed physical layer technologies for short-distance, high-speed wireless networks.
- IEEE has incorporated UWB technology into its IEEE 802 series of wireless standards.
- IEEE has released the high-speed wireless personal area network (Wireless Personal Area Network, WPAN) standard IEEE 802.15.4a and its evolution version IEEE 802.15.4z based on UWB technology.
- WPAN Wireless Personal Area Network
- the formulation of the next-generation UWB wireless personal area network standard 802.15.4ab has also been put on the agenda.
- the bandwidth of the signal used for wireless communication is very large (minimum 500M (megabyte)), so the UWB signal can be used to obtain high-precision ranging results or perception measurement results.
- the UWB wireless communication system how to use ultra-wideband signals to realize the perception of the surrounding environment and the feedback of the perception measurement results is a problem worth considering.
- the present application provides a perception measurement method and a related device, which are used to realize the perception of the target in the surrounding environment by the second device and feed back the corresponding perception measurement result to the first device.
- the first aspect of the present application provides a perception measurement method, the method comprising:
- the first device sends the first physical layer protocol data unit (PHY Protocol Data Unit, PPDU) to the second device, and the first PPDU is used for perception measurement; the first device receives the second PPDU from the second device, and the second PPDU includes the perception
- the measurement result, the sensing measurement result is obtained by the second device performing sensing measurement on the first PPDU.
- PHY Protocol Data Unit PHY Protocol Data Unit
- the above technical solution may be applied to a UWB wireless communication system, and the first device and the second device may be two UWB devices of the UWB wireless communication system.
- the first device sends a first PPDU to the second device, and then the first device may receive a second PPDU from the second device, the second PPDU includes a perceptual measurement result, which is a perceptual measurement performed by the second device on the first PPDU owned.
- the perception of the surrounding environment by the UWB device is realized and the corresponding perception measurement results are fed back.
- the second aspect of the present application provides a perception measurement method, including:
- the second device receives the first PPDU from the first device; the second device performs perception measurement on the first PPDU to obtain a perception measurement result; the second device sends a second PPDU to the first device, and the second PPDU includes the perception measurement result .
- the above technical solution may be applied to a UWB wireless communication system, and the first device and the second device may be two UWB devices of the UWB wireless communication system.
- the second device performs perception measurement on the first PPDU, obtains a perception measurement result, and feeds back the perception measurement result to the first device. In this way, the perception of the surrounding environment by the UWB device is realized and the corresponding perception measurement results are fed back.
- the sensing measurement result includes at least one of the following: transmission path number information, multipath signal component amplitude information, time information, angle Information, location information of the second device;
- the transmission path number information is used to indicate the number of transmission paths between the first device and the second device;
- the multipath signal component amplitude information includes at least one transmission path of the first PPDU between the first device and the second device The corresponding signal amplitude information;
- the time information includes the time information corresponding to the first PPDU on at least one transmission path;
- the angle information includes the angle information corresponding to the arrival of the first PPDU on at least one transmission path to the second device.
- the above implementation manner shows the specific content of the perception measurement result, which specifically includes the signal amplitude information, time information, angle information, and The number of transmission paths between the first device and the second device, the location information of the second device, and the like. It is beneficial for the first device to determine information such as the position and speed of the target in the surrounding environment based on the perception measurement result, so as to realize the perception of the target in the surrounding environment.
- the multipath signal component amplitude information includes in-phase signal amplitude information and quadrature Signal amplitude information
- the in-phase amplitude information includes the amplitude information of the in-phase signal corresponding to the first PPDU on at least one transmission path
- the quadrature amplitude information includes the amplitude information of the quadrature signal corresponding to the first PPDU on at least one transmission path.
- the multipath signal component amplitude information characterizes the signal energy of the first PPDU on each transmission path from two dimensions (the in-phase signal of the first PPDU and the quadrature signal of the first PPDU). Therefore, it is beneficial for the first device to determine the signal amplitude variation and signal phase variation on each transmission path based on the multipath signal component amplitude information. Since the phase change of the signal can represent the moving speed of the target in the environment to a certain extent, the first device can determine information such as the moving speed of the target through the multipath signal component amplitude information.
- the in-phase signal amplitude information includes at least one first An amplitude difference, at least one first amplitude difference corresponds to at least one transmission path, and each first amplitude difference is based on the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path corresponding to the first amplitude difference and the first transmission path Determined by the amplitude of the in-phase signal of the first PPDU transmitted above, the first transmission path is the transmission path with the strongest signal energy of the first PPDU in at least one transmission path;
- the quadrature signal amplitude information includes at least one second amplitude difference, At least one second amplitude difference corresponds to at least one transmission path, and each second amplitude difference is based on the amplitude of the quadrature signal of the first PPDU transmitted on the transmission path corresponding to the second amplitude difference and the amplitude of the first PPDU transmitted on the
- the amplitude information of the in-phase signal may be represented by at least one first amplitude difference
- the amplitude information of the quadrature signal may be represented by at least one second amplitude difference. If the signal amplitude information can be correctly indicated, it is beneficial to reduce the number of bits used to indicate the signal amplitude information in the second PPDU, thereby improving resource utilization.
- each first amplitude difference is equal to the first amplitude difference for the first
- a ratio is logarithmic, the first ratio being the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path corresponding to the first amplitude difference and the amplitude of the in-phase signal of the first PPDU transmitted on the first transmission path
- Each second amplitude difference is equal to the logarithm of the second ratio, and the second ratio is the amplitude of the quadrature signal of the first PPDU transmitted on the transmission path corresponding to the second amplitude difference and the first transmission path The ratio between the amplitudes of the quadrature signals of the first PPDU transmitted.
- a specific calculation method of the first amplitude difference and the second amplitude difference is provided in the above implementation manner, which facilitates the implementation of the solution. It is convenient for the second device to indicate the amplitude information of multipath signal components through at least one first amplitude difference and at least one second amplitude difference, which is beneficial to reduce the number of bits used to indicate signal amplitude information in the second PPDU, thereby improving resource utilization.
- the time information includes at least one delay difference
- At least one delay difference corresponds to at least one transmission path
- each delay difference is the arrival time of the first PPDU transmitted on the transmission path corresponding to the delay difference to the second device and the first PPDU transmitted on the second transmission path.
- the time difference between arrival times of PPDUs arriving at the second device, and the second transmission path is a transmission path with the minimum transmission time of the first PPDU among at least one transmission path.
- the content specifically included in the time information is shown, and the second device uses at least one delay difference to represent the transmission time information of the first PPDU on the at least one transmission path. Therefore, it is convenient for the first device to determine information such as the distance between the target on the transmission path and the first device based on the time information. Secondly, the second device uses at least one delay difference to represent the transmission time information of the first PPDU on the at least one transmission path. In the case that the time information can be correctly indicated, it is beneficial to reduce the time information used to indicate the time information in the second PPDU. The number of bits saves bit overhead.
- the angle information includes at least one incident angle, at least One incident angle corresponds to at least one transmission path, and each incident angle is an incident angle at which the first PPDU transmitted on the transmission path corresponding to the incident angle reaches the second device.
- the above-mentioned embodiment shows what the angle information includes.
- the second device uses at least one incident angle to represent the incident angle at which the first PPDU on the at least one transmission path reaches the second device. Therefore, it is convenient for the first device to determine the specific position of the target on the transmission path based on the angle information.
- the location information of the second device includes at least the following One item: longitude information where the second device is located, latitude information where the second device is located, and altitude information where the second device is located.
- the second device may also feed back location information of the second device to the first device, specifically including longitude, latitude, and altitude information where the second device is located. Therefore, it is convenient for the first device to determine the position of the target in the surrounding environment based on the position information of the second device.
- Methods before the first device sends the first PPDU to the second device, Methods also include:
- the first device sends a sensory measurement request to the second device, and the sensory measurement request is used to request the second device to assist the first device in sensory measurement; the first device receives a sensory measurement consent response from the second device, and the sensory measurement consent response is used to indicate The second device agrees to assist the first device with the perception measurement.
- the first device before the sensory measurement is performed between the first device and the second device, the first device can negotiate with the second device for sensory measurement, so that the second device can assist the first device to perform sensory measurement, and realize Perceive the target of the environment and feed back the corresponding perception measurement result to the first device.
- the method further includes: the first device sends a measurement report request to the second device, where the measurement report request is used to request the second device to feed back the perception measurement result.
- the first device may request the second device to feed back the perception measurement result, so that the second device may feed back the perception measurement result to the first device. Therefore, it is convenient for the first device to determine information such as the location of the target in the surrounding environment based on the perception measurement result.
- the method before the second device receives the first PPDU from the first device , the method further includes: the second device receives a sensory measurement request from the first device, where the sensory measurement request is used to request the second device to assist the first device in performing sensory measurement; the second device sends a sensory measurement consent response to the first device, and the sensory measurement The consent response is used to indicate that the second device agrees to assist the first device in performing the sensing measurement.
- the first device before the perception measurement is performed between the first device and the second device, the first device can negotiate with the second device for perception measurement, so that the second device can assist the first device in performing perception measurement, and realize the awareness of the surrounding environment.
- the target perceives and feeds back the corresponding perception measurement result to the first device.
- the second device receives a measurement report request from the first device to request feedback of the perception measurement result, so that the second device can feed back the perception measurement result to the first device. Therefore, it is convenient for the first device to determine information such as the location of the target in the surrounding environment based on the perception measurement result.
- the second PPDU includes channel measurement feedback elements, and the sensing The measurement result is carried in the channel measurement feedback element.
- a specific field carrying the perception measurement result is provided, so as to facilitate the implementation of the solution.
- the channel measurement feedback element includes at least one of the following fields: Multipath number field, multipath amplitude field, multipath delay field, multipath signal incidence angle field and device location information field; the multipath number field is used to carry the number information of transmission paths, and the multipath amplitude field is used to carry The multipath signal component amplitude information, the multipath delay field is used to carry time information, the multipath signal incident angle field is used to carry angle information, and the device location information field is used to carry location information of the second device.
- the channel measurement feedback element includes a plurality of subfields, which can be used to carry information included in the perception measurement result, respectively. This facilitates the first device to interpret the perception measurement result.
- the third aspect of the present application provides a perception measurement method, including:
- the first device sends a trigger frame to the second device, the trigger frame is used to trigger the second device to send a first PPDU, and the first PPDU is used for perception measurement; the first device receives the first PPDU from the second device; the first device Perception measurement is performed based on the first PPDU to obtain a perception measurement result.
- the above technical solution may be applied to a UWB wireless communication system, and the first device and the second device may be two UWB devices of the UWB wireless communication system.
- the first device sends a trigger frame to the second device, where the trigger frame is used to trigger the second device to send a first PPDU, where the first PPDU is used for perception measurement.
- the first device receives the first PPDU from the second device, and the first device performs sensing measurement based on the first PPDU to obtain a sensing measurement result. In this way, the perception of the surrounding environment by the UWB device is realized to obtain corresponding perception measurement results. No need to feedback sensory measurements.
- the fourth aspect of the present application provides a perception measurement method, including:
- the second device receives a trigger frame from the first device, where the trigger frame is used to trigger the first device to send a first PPDU, and the first PPDU is used for perception measurement; the second device sends the first PPDU to the first device.
- the above technical solution may be applied to a UWB wireless communication system, and the first device and the second device may be two UWB devices of the UWB wireless communication system.
- the first device sends a trigger frame to the second device, where the trigger frame is used to trigger the second device to send a first PPDU, where the first PPDU is used for perception measurement.
- the second device sends a first PPDU to the first device. Therefore, it is convenient for the first device to perform perception measurement based on the first PPDU, and obtain a perception measurement result. In this way, the perception of the surrounding environment by the UWB device is realized to obtain corresponding perception measurement results. No need to feedback sensory measurements.
- the trigger frame includes first indication information, and the first indication information is used to instruct the second device to send a format of the first PPDU.
- the first device may indicate the format of the first PPDU to the second device through the trigger frame, so that the second device can send the first PPDU in the format indicated by the first PPDU. It is beneficial for the first device to parse the first PPDU, and perform perception measurement on the first PPDU to obtain a corresponding perception measurement result. No need to feedback sensory measurements.
- the first indication information includes at least one of the following: scrambled time stamp sequence (scrambled timestamp sequence, STS) secret key, signal time length, STS sequence repetition times.
- the first indication information may indicate to the second device the STS key, the signal duration, and the number of repetitions of the STS sequence.
- the second device can generate the first PPDU based on these information.
- the first PPDU includes an STS
- the STS is generated based on the STS key
- the length of the STS is the signal time length
- the STS is placed repeatedly in the first PPDU.
- the first device may perform a correlation operation on the locally determined STS and the STS of the first PPDU to obtain some corresponding sensing measurement quantities.
- the first device parses the first PPDU through the STS, which is beneficial to improving the security of the first device parsing the first PPDU and time measurement.
- the sensory measurement results include at least one of the following Items: information on the number of transmission paths, amplitude information of multipath signal components, time information, and angle information.
- the transmission path number information is used to indicate the number of transmission paths between the first device and the second device;
- the multipath signal component amplitude information includes at least one transmission path of the first PPDU between the first device and the second device The corresponding signal amplitude information;
- the time information includes the time information corresponding to the first PPDU on the at least one transmission path;
- the angle information includes the angle information corresponding to the arrival of the first PPDU on the at least one transmission path to the first device.
- the above implementation manner shows the specific content of the perception measurement result, which specifically includes the signal amplitude information, time information, angle information, and The number of transmission paths between the first device and the second device, etc. It is beneficial for the first device to determine information such as the position and speed of the target in the surrounding environment based on the perception measurement result, so as to realize the perception of the target in the surrounding environment.
- the multipath signal component amplitude information includes In-phase signal amplitude information and quadrature signal amplitude information
- the in-phase amplitude information includes the amplitude information of the in-phase signal corresponding to the first PPDU on at least one transmission path
- the quadrature amplitude information includes the amplitude information of the first PPDU on at least one transmission path Amplitude information of the quadrature signal.
- the multipath signal component amplitude information characterizes the signal energy of the first PPDU on each transmission path from two dimensions (the in-phase signal of the first PPDU and the quadrature signal of the first PPDU). Therefore, it is convenient for the first device to determine the signal amplitude variation and signal phase variation on each transmission path based on the multipath signal component amplitude information. Since the phase change of the signal can represent the moving speed of the target in the environment to a certain extent, the first device can determine information such as the moving speed of the target through the multipath signal component amplitude information.
- the in-phase signal amplitude information includes at least A first amplitude difference, at least one first amplitude difference corresponds to at least one transmission path, and each first amplitude difference is based on the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path corresponding to the first amplitude difference and the first Determined by the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path, the first transmission path is the transmission path with the strongest signal capability of the first PPDU in at least one transmission path;
- the orthogonal signal amplitude information includes at least one second amplitude At least one second amplitude difference corresponds to at least one transmission path, and each second amplitude difference is based on the magnitude of the quadrature signal of the first PPDU transmitted on the transmission path corresponding to the second amplitude difference and the amplitude of the quadrature signal transmitted on
- the amplitude information of the in-phase signal may be represented by at least one first amplitude difference
- the amplitude information of the quadrature signal may be represented by at least one second amplitude difference.
- the first device may determine signal amplitude information of the first PPDU on each transmission path based on the at least one first amplitude difference and the at least one second amplitude difference.
- each first amplitude difference is equal to Taking the logarithm for the first ratio, the first ratio is the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path corresponding to the first amplitude difference and the amplitude of the in-phase signal of the first PPDU transmitted on the first transmission path The ratio between the amplitudes; each second amplitude difference is equal to the logarithm of the second ratio, and the second ratio is the amplitude of the quadrature signal of the first PPDU transmitted on the transmission path corresponding to the second amplitude difference and the first transmission The ratio between the amplitudes of the quadrature signals of the first PPDU transmitted on the path.
- a specific calculation method of the first amplitude difference and the second amplitude difference is provided in the above implementation manner, which facilitates the implementation of the solution. It is convenient for the first device to determine the signal amplitude information of the first PPDU on each transmission path by using at least one first amplitude difference and at least one second amplitude difference.
- the time information includes at least one time delay At least one delay difference corresponds to at least one transmission path, and each delay difference is the difference between the arrival time of the first PPDU transmitted on the transmission path corresponding to the delay difference and the arrival time of the first PPDU transmitted on the second transmission path.
- the time difference between arrival times of the first PPDU at the first device, and the second transmission path is a transmission path with the smallest transmission time of the first PPDU among at least one transmission path.
- the above-mentioned embodiment shows what the time information specifically includes, and the first device uses at least one delay difference to represent the transmission time information of the first PPDU on the at least one transmission path. Therefore, it is convenient for the first device to determine information such as the distance between the target on the transmission path and the first device based on the time information.
- the angle information includes at least one incident angle , at least one incident angle corresponds to at least one transmission path, and each incident angle is an incident angle at which the first PPDU transmitted on the transmission path corresponding to the incident angle reaches the first device.
- the above-mentioned embodiment shows what the angle information includes.
- the first device uses at least one incident angle to represent the incident angle at which the first PPDU on the at least one transmission path arrives at the first device. Therefore, it is convenient for the first device to determine the specific position of the target on the at least one transmission path based on the angle information.
- a fifth aspect of the present application provides a first communication device, including:
- a sending unit configured to send a first PPDU to the second communication device, where the first PPDU is used for perception measurement
- the receiving unit is configured to receive a second PPDU from the second communication device, the second PPDU includes a sensing measurement result, and the sensing measurement result is obtained by the second communication device performing sensing measurement on the first PPDU.
- a sixth aspect of the present application provides a second communication device, including:
- a receiving unit configured to receive a first PPDU from the first communication device
- a processing unit configured to perform perceptual measurement on the first PPDU to obtain a perceptual measurement result
- a sending unit configured to send a second PPDU to the first communication device, where the second PPDU includes a perception measurement result.
- the sensing measurement result includes at least one of the following: transmission path number information, multipath signal component amplitude information, time information, angle information, location information of the second communication device;
- the transmission path number information is used to indicate the number of transmission paths between the first communication device and the second communication device;
- the multipath signal component amplitude information includes the first PPDU between the first communication device and the second communication device The corresponding signal amplitude information on at least one transmission path;
- the time information includes the time information corresponding to the first PPDU on at least one transmission path;
- the angle information includes the angle information corresponding to the arrival of the first PPDU on the at least one transmission path to the second communication device.
- the multipath signal component amplitude information includes in-phase signal amplitude information and quadrature Signal amplitude information
- the in-phase amplitude information includes the amplitude information of the in-phase signal corresponding to the first PPDU on at least one transmission path
- the quadrature amplitude information includes the amplitude information of the quadrature signal corresponding to the first PPDU on at least one transmission path.
- the in-phase signal amplitude information includes at least one first An amplitude difference, at least one first amplitude difference corresponds to at least one transmission path, and each first amplitude difference is based on the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path corresponding to the first amplitude difference and the first transmission path Determined by the amplitude of the in-phase signal of the first PPDU transmitted above, the first transmission path is the transmission path with the strongest signal energy of the first PPDU in at least one transmission path;
- the quadrature signal amplitude information includes at least one second amplitude difference, At least one second amplitude difference corresponds to at least one transmission path, and each second amplitude difference is based on the amplitude of the quadrature signal of the first PPDU transmitted on the transmission path corresponding to the second amplitude difference and the amplitude of the first PPDU transmitted on the
- each first amplitude difference is equal to the first amplitude difference for the first
- a ratio is logarithmic, the first ratio being the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path corresponding to the first amplitude difference and the amplitude of the in-phase signal of the first PPDU transmitted on the first transmission path
- Each second amplitude difference is equal to the logarithm of the second ratio, and the second ratio is the amplitude of the quadrature signal of the first PPDU transmitted on the transmission path corresponding to the second amplitude difference and the first transmission path The ratio between the amplitudes of the quadrature signals of the first PPDU transmitted.
- the time information includes at least one delay difference
- At least one delay difference corresponds to at least one transmission path
- each delay difference is the arrival time of the first PPDU transmitted on the transmission path corresponding to the delay difference to the second communication device and the first PPDU transmitted on the second transmission path
- the time difference between arrival times of a PPDU at the second communication device, the second transmission path is the transmission path with the minimum transmission time of the first PPDU among at least one transmission path.
- the angle information includes at least one incident angle, at least One incident angle corresponds to at least one transmission path, and each incident angle is an incident angle at which the first PPDU transmitted on the transmission path corresponding to the incident angle reaches the second communication device.
- the location information of the second communication device includes the following At least one item: longitude information where the second communication device is located, latitude information where the second communication device is located, and altitude information where the second communication device is located.
- the sending unit is also used for:
- sensing measurement request is used to request the second communication device to assist the first communication device in performing sensing measurement
- the receiving unit is also used for:
- a sensing measurement consent response from the second communication device is received, where the sensing measurement consent response is used to indicate that the second communication device agrees to assist the first communication device in performing sensing measurement.
- the sending unit is also used for:
- the receiving unit is also used for:
- the sending unit is also used for:
- sensing measurement consent response to the first communication device, where the sensing measurement consent response is used to indicate that the second communication device agrees to assist the first communication device in performing sensing measurement.
- a measurement report request from the first communication device is received, where the measurement report request is used to request the second communication device to feed back a sensing measurement result.
- the second PPDU includes channel measurement feedback elements, and the sensing The measurement result is carried in the channel measurement feedback element.
- the channel measurement feedback element includes at least one of the following fields: Multipath number field, multipath amplitude field, multipath delay field, multipath signal incidence angle field and device location information field; the multipath number field is used to carry the number information of transmission paths, and the multipath amplitude field is used to carry The multipath signal component amplitude information, the multipath delay field is used to carry time information, the multipath signal incident angle field is used to carry angle information, and the device location information field is used to carry location information of the second communication device.
- the multipath number field is used to carry the number information of transmission paths
- the multipath amplitude field is used to carry The multipath signal component amplitude information
- the multipath delay field is used to carry time information
- the multipath signal incident angle field is used to carry angle information
- the device location information field is used to carry location information of the second communication device.
- a seventh aspect of the present application provides a first communication device, including:
- a sending unit configured to send a trigger frame to the second communication device, the trigger frame is used to trigger the second communication device to send a first PPDU, and the first PPDU is used for perception measurement;
- a receiving unit configured to receive the first PPDU from the second communication device
- a processing unit configured to perform perception measurement based on the first PPDU, and obtain a perception measurement result.
- the eighth aspect of the present application provides a second communication device, including:
- a receiving unit configured to receive a trigger frame from the first communication device, the trigger frame is used to trigger the first communication device to send a first PPDU, and the first PPDU is used for perception measurement;
- a sending unit configured to send the first PPDU to the first communication device.
- the trigger frame includes first indication information, and the first indication information is used to instruct the second communication apparatus to send the format of the first PPDU.
- the first indication information includes at least one of the following: STS key, signal time Length, number of STS sequence repeats.
- the sensory measurement results include at least one of the following Items: information on the number of transmission paths, amplitude information of multipath signal components, time information, and angle information.
- the transmission path number information is used to indicate the number of transmission paths between the first communication device and the second communication device;
- the multipath signal component amplitude information includes the first PPDU between the first communication device and the second communication device The corresponding signal amplitude information on at least one transmission path;
- the time information includes the time information corresponding to the first PPDU on the at least one transmission path;
- the angle information includes the corresponding angle at which the first PPDU arrives at the first communication device on at least one transmission path information.
- the multipath signal component amplitude information includes In-phase signal amplitude information and quadrature signal amplitude information
- the in-phase amplitude information includes the amplitude information of the in-phase signal corresponding to the first PPDU on at least one transmission path
- the quadrature amplitude information includes the amplitude information of the first PPDU on at least one transmission path Amplitude information of the quadrature signal.
- the in-phase signal amplitude information includes at least A first amplitude difference, at least one first amplitude difference corresponds to at least one transmission path, and each first amplitude difference is based on the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path corresponding to the first amplitude difference and the first Determined by the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path, the first transmission path is the transmission path with the strongest signal capability of the first PPDU in at least one transmission path;
- the orthogonal signal amplitude information includes at least one second amplitude At least one second amplitude difference corresponds to at least one transmission path, and each second amplitude difference is based on the magnitude of the quadrature signal of the first PPDU transmitted on the transmission path corresponding to the second amplitude difference and the amplitude of the quadrature signal transmitted on
- each first amplitude difference is equal to Taking the logarithm for the first ratio, the first ratio is the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path corresponding to the first amplitude difference and the amplitude of the in-phase signal of the first PPDU transmitted on the first transmission path The ratio between the amplitudes; each second amplitude difference is equal to the logarithm of the second ratio, and the second ratio is the amplitude of the quadrature signal of the first PPDU transmitted on the transmission path corresponding to the second amplitude difference and the first transmission The ratio between the amplitudes of the quadrature signals of the first PPDU transmitted on the path.
- the time information includes at least one time delay At least one delay difference corresponds to at least one transmission path, and each delay difference is the difference between the arrival time of the first PPDU transmitted on the transmission path corresponding to the delay difference and the arrival time of the first PPDU transmitted on the second transmission path.
- the time difference between arrival times of the first PPDU at the first communication device, and the second transmission path is the transmission path with the smallest transmission time of the first PPDU among at least one transmission path.
- the angle information includes at least one incident angle , at least one incident angle corresponds to at least one transmission path, and each incident angle is an incident angle at which the first PPDU transmitted on the transmission path corresponding to the incident angle reaches the first communication device.
- a ninth aspect of the present application provides a communication device, where the communication device includes: a processor and a memory.
- the memory stores computer programs or computer instructions
- the processor is used to invoke and execute the computer programs or computer instructions stored in the memory, so that any implementation manner of any one of the first aspect to the fourth aspect is executed.
- the communication device further includes a transceiver, and the processor is used to control the transceiver to send and receive signals.
- a tenth aspect of the present application provides a communication device, where the communication device includes a processor.
- the processor is used for invoking a stored computer program or computer instruction, so that any implementation manner of any one of the first aspect to the fourth aspect is executed.
- the communication device further includes a transceiver, and the processor is used to control the transceiver to send and receive signals.
- An eleventh aspect of the present application provides a communication device, where the communication device includes a processor configured to execute any implementation manner of any one of the first aspect to the fourth aspect.
- the twelfth aspect of the present application provides a computer program product including instructions, which is characterized in that, when it is run on a computer, the implementation of any one of the aspects from the first aspect to the fourth aspect is executed .
- a thirteenth aspect of the present application provides a computer-readable storage medium, including computer instructions. When the instructions are run on a computer, any implementation method in any one of the first to fourth aspects is executed. .
- the fourteenth aspect of the present application provides a chip device, including a processor, which is used to call a computer program or computer instruction in the memory, so that any implementation method in any one of the above-mentioned first to fourth aspects is executed .
- the chip device further includes a memory, which is used to store computer programs or computer instructions.
- the chip device is composed of chips, and may also include chips and other discrete devices.
- the processor is coupled with the memory through an interface.
- a fifteenth aspect of the present application provides a communication system, the communication system includes the first communication device according to the fifth aspect and the second communication device according to the sixth aspect; or, the communication system includes the first communication device according to the seventh aspect An apparatus and the second communication device according to the eighth aspect.
- the first device sends the first PPDU to the second device, and the first PPDU is used for perception measurement; then, the first device receives the second PPDU from the second device, and the second PPDU includes the perception measurement result, which The sensing measurement result is obtained by the second device performing sensing measurement on the first PPDU. It can be seen that, in the technical solution of the present application, the first device receives the second PPDU from the second device, and the second PPDU includes a sensing measurement result obtained by the second device performing sensing measurement on the first PPDU. In this way, the second device can perceive the objects in the surrounding environment and feed back the corresponding perception measurement results to the first device.
- FIG. 1 is a schematic structural diagram of a wireless communication system provided by an embodiment of the present application.
- FIG. 2 is a schematic diagram of another architecture of a wireless communication system provided by an embodiment of the present application.
- FIG. 3 is a schematic structural diagram of a PPDU provided by an embodiment of the present application.
- Fig. 4 (a) is another schematic structural diagram of the PPDU provided by the embodiment of the present application.
- Fig. 4 (b) is another schematic structural diagram of the PPDU provided by the embodiment of the present application.
- Fig. 4 (c) is another schematic structural diagram of the PPDU provided by the embodiment of the present application.
- FIG. 5 is a schematic diagram of the distance between device A and device B obtained in the ranging process of the embodiment of the present application;
- FIG. 6 is a schematic diagram of an embodiment of a perception measurement method according to an embodiment of the present application.
- FIG. 7 is a schematic flowchart of a perception measurement method according to an embodiment of the present application.
- FIG. 8 is a schematic diagram of a scenario of a perception measurement method according to an embodiment of the present application.
- FIG. 9 is a schematic diagram of another embodiment of the perception measurement method of the embodiment of the present application.
- FIG. 10 is another schematic flowchart of a perception measurement method according to an embodiment of the present application.
- FIG. 11 is a schematic structural diagram of a first communication device according to an embodiment of the present application.
- FIG. 12 is a schematic structural diagram of a second communication device according to an embodiment of the present application.
- FIG. 13 is another schematic structural diagram of the first communication device according to the embodiment of the present application.
- FIG. 14 is another schematic structural diagram of a second communication device according to an embodiment of the present application.
- FIG. 15 is another schematic structural diagram of the first communication device according to the embodiment of the present application.
- FIG. 16 is another schematic structural diagram of a second communication device according to an embodiment of the present application.
- Embodiments of the present application provide a perception measurement method and a related device, which are used to realize a second device's perception of an object in a surrounding environment and feed back a corresponding perception measurement result to the first device.
- At least one item (unit) of a, b, or c may represent: a, b, c; a and b; a and c; b and c; or a and b and c.
- a, b, c can be single or multiple.
- words such as “exemplary” or “for example” are used to mean an example, illustration or description. Any embodiment or design described in this application as “exemplary”, “for example” or “such as” is not to be construed as preferred or advantageous over other embodiments or designs. Rather, use of words such as “exemplary,” “for example,” or “such as” is intended to present related concepts in a specific manner.
- system architecture of the method provided in the embodiment of the present application will be described below. It can be understood that the system architecture described in the embodiments of the present application is for more clearly illustrating the technical solutions of the embodiments of the present application, and does not constitute a limitation on the technical solutions provided by the embodiments of the present application.
- the technical solution provided by this application can be applied to a wireless personal area network (Wireless Personal Area Network, WPAN) based on ultra-wideband (Ultra-Wide Band, UWB) technology.
- WPAN Wireless Personal Area Network
- UWB Ultra-wideband
- the technical solutions provided in this application can be applied to IEEE 802.15 series standards.
- IEEE 802.15.4a standard, IEEE 802.15.4z standard, IEEE 802.15.4ab standard, or a future generation of UWB WPAN standard for example, IEEE 802.15.4a standard, IEEE 802.15.4z standard, IEEE 802.15.4ab standard, or a future generation of UWB WPAN standard.
- WPAN Wireless Local Area Networks
- Bluetooth BLUETOOTH
- High Performance Wireless LAN High Performance Radio LAN, HIPERLAN
- WAN wide area networks
- the embodiments of the present application may also be applicable to wireless local area network systems such as an Internet of Things (Internet of Things, IoT) network or a vehicle networking (Vehicle to X, V2X).
- IoT Internet of Things
- V2X vehicle networking
- the embodiment of the present application can also be applicable to other possible communication systems, for example, Long Term Evolution (Long Term Evolution, LTE) system, LTE Frequency Division Duplex (Frequency Division Duplex, FDD) system, LTE Time Division Duplex (Time Division) Duplex, TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability For Microwave Access (WiMAX) communication system, fifth generation (5th Generation, 5G) communication system, and future The sixth generation (6th Generation, 6G) communication system, etc.
- LTE Long Term Evolution
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- UMTS Universal Mobile Telecommunication System
- WiMAX Worldwide Interoperability For Microwave Access
- 5G fifth generation
- FIG. 1 is a schematic structural diagram of a wireless communication system provided by an embodiment of the present application.
- the wireless communication system adopts a star topology.
- a star topology includes a central control device and one or more distribution devices. Communication transmission can be performed between the central control device and the one or more distribution devices.
- the network shown in FIG. 1 may be a WPAN, and the central control device may be the WPAN coordinator, that is, act as the coordinator in the WPAN.
- the central control device and the distribution device realize the perception of objects in the surrounding environment and obtain corresponding sensing measurement results.
- the wireless communication system includes two types of devices, which are full function devices (Full Function Device) and reduced function devices (Reduce Function Device).
- FIG. 2 is another schematic structural diagram of a wireless communication system provided by an embodiment of the present application.
- the wireless communication system adopts a point-to-point topology.
- the network shown in FIG. 2 may be a WPAN, and the device a shown in FIG. 2 may serve as a WPAN coordinator, that is, act as a coordinator in the WPAN.
- the different devices in FIG. 2 realize the perception of objects in the surrounding environment and obtain corresponding perception measurement results through the technical solution of the present application.
- the wireless communication system includes two types of devices, which are full-function devices and reduced-function devices.
- a wireless communication system to which the present application is applicable includes a first device and a second device.
- the first device includes a communication server, a router, a switch, a bridge, a computer device, a terminal device, a PAN coordinator, and the like.
- the second equipment includes communication servers, routers, switches, bridges, computer equipment, terminal equipment, and the like.
- the frame structure of the physical layer protocol data unit in the UWB 802.15.4 standard.
- the PPDU includes a synchronization header (Synchronization Header, SHR), a physical header (PHY Header, PHR) and a physical layer payload (PHY Payload).
- the SHR includes a standard pre-defined preamble sequence (Preamble Sequence), which is used for PPDU detection and synchronization by the receiving end device.
- the PHR carries some indication information of the physical layer, such as modulation and coding information, PPDU length, etc., and is used to assist the receiving end device to correctly demodulate the data.
- the receiver device refers to the device that receives the PPDU.
- the receiver device can use the pre-defined preamble sequence to perform correlation calculation with the preamble sequence in the PPDU (that is, the received signal), and use information such as the peak position in the result obtained by the correlation operation to determine the arrival time of the PPDU to the receiver device.
- the time of arrival usually referred to refers to the time relative to the ranging marker (Ranging Marker, RMARKER), where the ranging marker refers to the frame start delimiter (Start-of-Frame Delimiter, SFD) immediately following the SHR The time at which the first pulse of ⁇ reaches the local antenna of the receiving device.
- the 802.15.4z standard introduces a scrambled timestamp sequence (Scrambled Timestamp Sequence, STS).
- STS is a pseudo-random sequence, and only a specific receiving device can know the STS.
- the receiving end device uses the STS and the PPDU (that is, the received signal) to perform a correlation calculation, and estimates the arrival time information of the PPDU to the receiving end device according to the peak position in the correlation result obtained by the correlation operation.
- the PPDU includes an STS, and the STS can be placed before or after the PHY Payload, or can exist independently instead of the PHY Payload.
- the STS is before the PHR and PHY Payload.
- the STS is after the PHY Payload.
- the PPDU includes the STS and does not include the PHY Payload.
- the ranging process using ultra-wideband signals is recorded in the UWB wireless standard, and the ranging process is introduced below.
- device A sends a ranging PPDU to device B, and records the sending time of the ranging PPDU.
- the device B determines the arrival time of the ranging PPDU to the device B according to the preamble sequence or the STS sequence in the ranging PPDU.
- Device B sends a response PPDU to device A, and records the sending time of the response PPDU.
- Device A determines the arrival time of the response PPDU according to the preamble sequence or the STA sequence of the first response PPDU.
- device A can determine the round-trip time T round of this interaction according to the sending time of the ranging PPDU and the arrival time of the response PPDU.
- device B can determine the time of receiving the ranging PPDU and the time of sending the response PPDU A reply time interval T reply is determined. Therefore, the transmission time T prop between device A and device B can be calculated according to the following formula 1.
- device B may send the calculated reply time interval T reply to device A.
- the convenience device A calculates the transmission time T prop of the ranging PPDU according to the above formula 1.
- the distance between device A and device B is equal to the transit time T prop multiplied by the speed of light c.
- the distance measurement process described above realizes distance measurement between two devices.
- UWB technology only attention is paid to the determination of the arrival time of the line-of-sight signal to determine the distance between device A and device B. It cannot support the perception of other targets in the surrounding environment.
- the present application proposes a corresponding technical solution to realize the perception of other objects in the surrounding environment in the UWB wireless communication system and obtain corresponding perception measurement results.
- the sensing measurement result may also be referred to as a channel impulse response measurement (Channel Impulse Response, CIR) result.
- CIR Channel Impulse Response
- the first device can perform perception measurement with one or more second devices, and receive the perception measurement results respectively obtained by the one or more second devices. No limit.
- the technical solution of the present application is introduced by taking the perception measurement process between the first device and the second device as an example.
- Fig. 6 is a schematic diagram of an embodiment of a perception measurement method according to an embodiment of the present application.
- perception measurement methods include:
- the first device sends a first PPDU to a second device.
- the second device receives the first PPDU from the first device.
- the first PPDU is used for perception measurement.
- the first PPDU includes a preamble sequence, and the preamble sequence is carried in the SHR field of the first PPDU.
- the preamble sequence is carried in the SHR field of the first PPDU.
- the first PPDU further includes an STS.
- the STS is carried in the STS field of the first PPDU.
- device A sends a sensing PPDU to device B and device C, so that device B and device C perform sensing measurement based on the sensing PPDU.
- the technical solution of the present application may be applied to a UWB wireless communication system, and the first device and the second device may be two UWB devices of the UWB wireless communication system.
- the first PPDU may also be referred to as a perception PPDU, and the perception measurement of the surrounding environment is implemented between two UWB devices through the perception PPDU.
- the embodiment shown in Fig. 6 further includes step 600a and step 600b. Step 600a and step 600b may be performed before step 601 .
- the first device sends a perception measurement request to the second device.
- the second device receives the perception measurement request from the first device.
- the perception measurement request is used to request the second device to assist the first device in performing perception measurement.
- the second device sends a perception measurement consent response to the first device.
- the first device receives the perception measurement consent response from the second device.
- the perception measurement consent response is used to indicate that the second device agrees to assist the first device in performing the perception measurement.
- device A may send a sensing measurement request to device B and device C before sending the sensing PPDU. If the device B and the device C agree to assist the device A to perform the sensing measurement, the device B and the device C respectively feed back a sensing measurement agreement response to the device A, to indicate that they agree to assist the device to perform the sensing measurement.
- the second device feeds back a sensing measurement rejection response to indicate that the second device refuses to assist the first device in performing the sensing measurement. Then, in an implementation manner, the first device cannot perform perception measurement with the second device, and the first device may select other devices to perform perception measurement.
- the second device performs sensing measurement on the first PPDU to obtain a sensing measurement result.
- the perception measurement result includes at least one of the following: information about the number of transmission paths, amplitude information of multipath signal components, time information, angle information, and location information of the second device.
- the information about the number of transmission paths is used to indicate the number of transmission paths between the first device and the second device. That is, the number of transmission paths used for communication transmission between the first device and the second device. Specifically, at least one transmission path is included between the first device and the second device, and the at least one transmission path is used for communication transmission between the first device and the second device.
- the second device may perform a correlation operation on the predefined preamble sequence or STS with the first PPDU.
- the correlation operation if the second device passes the The number of peak locations determines the number of transmission paths between the first device and the second device. For example, during a perception PPDU interaction process, if the correlation result includes three peak positions, it means that there are three transmission paths between the first device and the second device.
- the multipath signal component amplitude information includes signal amplitude information corresponding to the first PPDU on the at least one transmission path.
- the multipath signal component amplitude information includes in-phase signal amplitude information and quadrature signal amplitude information.
- the amplitude information of the in-phase signal includes amplitude information of the in-phase signal corresponding to the first PPDU on at least one transmission path.
- the quadrature signal amplitude information includes an amplitude signal of the quadrature signal corresponding to the first PPDU on at least one transmission path.
- the second device determines the amplitude information of the in-phase signal and the amplitude information of the quadrature signal of the first PPDU transmitted on each transmission path, and carries it in the sensing measurement result. That is, the amplitude information of the in-phase signal and the amplitude information of the quadrature signal of the first PPDU transmitted on each transmission path represent the signal amplitude of the first PPDU transmitted on each transmission path.
- the second device may perform a correlation operation on the predefined preamble sequence and the preamble sequence in the first PPDU to obtain a correlation result.
- the second device may perform a correlation operation on the locally determined STS and the STS in the first PPDU to obtain a correlation result.
- Correlation results include peak positions corresponding to each transmission path.
- the signal X of the first PPDU transmitted on each transmission path can be expressed as
- the real part a represents the amplitude of the in-phase signal of the first PPDU
- b represents the amplitude of the quadrature signal of the first PPDU.
- the absolute value of the amplitude of the signal of the first PPDU is expressed as
- the phase of the signal of the first PPDU is expressed as
- the in-phase signal amplitude information includes at least one first amplitude difference, and the at least one first amplitude difference corresponds to the at least one transmission path. That is, the at least one first amplitude difference corresponds to the at least one transmission path one by one, and each first amplitude difference corresponds to one transmission path.
- Each first amplitude difference is determined based on the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path corresponding to the first amplitude difference and the amplitude of the in-phase signal of the first PPDU transmitted on the first transmission path.
- the first transmission path is a transmission path with the strongest signal energy of the first PPDU among the at least one transmission path.
- each first amplitude difference is equal to the logarithm of the first ratio
- the first ratio is the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path corresponding to the first amplitude difference and the amplitude of the in-phase signal on the first transmission path The ratio between the amplitudes of the in-phase signal on the first PPDU transmitted.
- Transmission path 1 is the direct line of sight between equipment A and equipment B.
- Transmission path 2 is the transmission path between device A to target 1 and then to device B.
- Transmission path 3 is the transmission path between device A to target 2 and then to device B.
- Target 1 and target 2 may be understood as targets (for example, passive targets) in the surrounding environment of device A and device B.
- Device B measures the signal energy of the first PPDU on each transmission path, and determines that the signal energy of the first PPDU on transmission path 1 is the largest. This is just an example.
- the transmission path with larger signal energy may also be other transmission paths, not necessarily the direct line-of-sight path.
- the first PPDU transmitted by each transmission path includes two parts of signals, namely an in-phase (In-phase) signal and a quadrature (Quadrature) signal.
- the second device may determine three first amplitude differences, D1, D2 and D3 respectively.
- D1 corresponds to transmission path 1, because the signal energy of the first PPDU on transmission path 1 is the largest, and D1 is equal to 0.
- D2 log 2 (P), log 2 (P) refers to taking the logarithm to P, and P is the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path 2 and the amplitude of the first PPDU transmitted on the transmission path 1 The ratio between the amplitudes of the in-phase signals.
- D3 log 2 (Q), log 2 (Q) refers to taking the logarithm to Q, and Q is that the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path 3 is the same as that of the first PPDU transmitted on the transmission path 1 The ratio between the amplitudes of the phase signals.
- the first transmission path is used as the transmission path with the strongest signal energy of the first PPDU among the at least one transmission path.
- the first transmission path may be any transmission path in the at least one transmission path.
- the first transmission path may also be a transmission path in which the signal energy of the first PPDU in the at least one transmission path is moderate.
- the quadrature signal amplitude information includes at least one second amplitude difference, and the at least one second amplitude difference corresponds to the at least one transmission path. That is, the at least second amplitude difference corresponds to the at least one transmission path one by one, and each second amplitude difference corresponds to one transmission path.
- Each second amplitude difference is determined based on the amplitude of the quadrature signal of the first PPDU transmitted on the transmission path corresponding to the second amplitude difference and the amplitude of the quadrature signal of the first PPDU transmitted on the first transmission path.
- first transmission path please refer to the related introduction mentioned above.
- each second amplitude difference is equal to the logarithm of the second ratio
- the second ratio is the amplitude of the quadrature signal of the first PPDU transmitted on the transmission path corresponding to the second amplitude difference and the amplitude of the first transmission path The ratio between the amplitudes of the quadrature signals on the first PPDU transmitted.
- Transmission path 1 is the direct line of sight between equipment A and equipment B.
- Transmission path 2 is the transmission path between device A to target 1 and then to device B.
- Transmission path 3 is the transmission path between device A to target 2 and then to device B.
- Target 1 and target 2 may be understood as targets (for example, passive targets) in the surrounding environment of device A and device B.
- the second device measures the signal energy of the first PPDU on each transmission path, and determines that the signal energy of the first PPDU on transmission path 1 is the largest.
- the first PPDU transmitted by each transmission path includes two parts of signals, which are in-phase signals and quadrature signals respectively.
- the second device may determine three second amplitude differences, E1, E2 and E3 respectively.
- E1 corresponds to transmission path 1, because the signal energy of the first PPDU on transmission path 1 is the largest, and E1 is equal to 0.
- E2 log 2 (R)
- log 2 (R) refers to taking the logarithm to R
- R is the magnitude of the orthogonal signal of the first PPDU transmitted on the transmission path 2 and the amplitude of the first PPDU transmitted on the transmission path 1
- E3 log 2 (S), log 2 (S) refers to taking the logarithm to S, and S is the magnitude of the orthogonal signal of the first PPDU transmitted on the transmission path 3 and the magnitude of the first PPDU transmitted on the transmission path 1 The ratio between the amplitudes of cross signals.
- the second device represents the signal amplitude and signal phase of the first PPDU on each transmission path by using the at least one first amplitude difference and the at least one second amplitude difference.
- the time information includes time information corresponding to the first PPDU on the at least one transmission path.
- the time information includes at least one delay difference, and the at least one delay difference corresponds to at least one transmission path. That is, one delay difference corresponds to one transmission path, that is, the at least one delay difference is in one-to-one correspondence with the at least one transmission path.
- Each delay difference is the difference between the arrival time of the first PPDU transmitted on the transmission path corresponding to the delay difference to the second device and the arrival time of the first PPDU transmitted on the second transmission path to the second device Time difference.
- the second transmission path is a transmission path with the shortest transmission time of the first PPDU among the at least one transmission path. That is to say, the transmission time of the first PPDU on each transmission path may be represented by a time difference between arrival times of the first PPDU on different transmission paths to the second device.
- Transmission path 1 is the direct line of sight between equipment A and equipment B.
- Transmission path 2 is the transmission path between device A to target 1 and then to device B.
- Transmission path 3 is the transmission path between device A to target 2 and then to device B.
- Device B measures the arrival time of the first PPDU on each transmission path to device B.
- device B can perform a correlation operation on the pre-defined preamble sequence and the preamble sequence included in the first PPDU on a certain transmission path to obtain the correlation result, and the abscissa corresponding to the peak position in the correlation result is in the transmission path The arrival time at which the first PPDU arrives at device B.
- device B can perform a correlation operation on the STS and the STS included in the first PPDU on a certain transmission path to obtain a correlation result, and the abscissa corresponding to the peak position in the correlation result is the arrival device of the first PPDU on the transmission path B's arrival time.
- Device B determines that the arrival time of the first PPDU on transmission path 1 to device B is the earliest, so it can be understood that transmission path 1 is a transmission path with the shortest transmission time of the first PPDU.
- Device B can determine three delay differences, which are F1, F2 and F3 respectively.
- F1 is equal to 0 because the signal energy of the first PPDU on transmission path 1 is the largest.
- F2 is equal to the time difference between the arrival time of the first PPDU transmitted on transmission path 2 to device B and the arrival time of the first PPDU transmitted on transmission path 1 to device B.
- F3 is equal to the time difference between the arrival time of the first PPDU transmitted on transmission path 3 to device B and the arrival time of the first PPDU transmitted on transmission path 1 to device B.
- the angle information includes angle information corresponding to the first PPDU arriving at the second device on at least one transmission path.
- the angle information includes at least one incident angle, and the at least one incident angle corresponds to the at least one transmission path.
- Each incident angle is an incident angle at which the first PPDU transmitted on the transmission path corresponding to the incident angle reaches the second device.
- multiple antennas are deployed on the second device, and the second device respectively receives the first PPDU transmitted on each transmission path through the multiple antennas.
- the second device may determine the incident angle by using a time difference between receiving times of the multiple antennas receiving the first PPDU on the transmission path.
- the time difference between the receiving times of the multiple antennas receiving the first PPDU on the transmission path may be determined according to the signal phase difference of the multiple antennas receiving the first PPDU on the transmission path.
- angle information including an incident angle at which the first PPDU on each transmission path arrives at the second device as an example.
- the angle information may also include an incident angle of each antenna among multiple antennas where the first PPDU arrives at the second device on each transmission path, which is not limited in this application. That is, the angle of incidence of the first PPDU incident on each antenna of the second device on each transmission path.
- the location information of the second device includes at least one of the following items: longitude information where the second device is located, latitude information where the second device is located, and altitude information where the second device is located.
- the second device sends a second PPDU to the first device, where the second PPDU includes a perception measurement result.
- the first device receives the second PPDU from the second device.
- device B and device C respectively perform sensing measurement (also called channel impulse response measurement) based on the sensing PPDU, and obtain CIR results 1 and CIR results2.
- Device B sends CIR feedback 1 to device A, where the CIR feedback 1 includes the CIR result 1 .
- Device C sends CIR feedback 2 to device A, where the CIR feedback 2 includes the CIR result 2 .
- the second PPDU includes a channel measurement feedback element (The Channel Measurement Feedback Element), and the sensing measurement result is carried in the channel measurement feedback element.
- the Channel Measurement Feedback Element may be included in the physical layer payload of the second PPDU.
- the channel measurement feedback element includes at least one of the following fields: a multipath number field, a multipath amplitude field, a multipath delay field, a multipath signal incident angle field, and a device location information field.
- the transmission path number information is carried in the multipath number field
- the multipath signal component amplitude information is carried in the multipath amplitude field
- the time information is carried in the multipath delay field
- the multipath signal incident angle field is carried in In the multipath signal incident angle field
- the location information of the second device is carried in the device location information field.
- Table 1 shows a specific format of the channel measurement feedback element and a possible example of the channel measurement feedback element carrying the sensing measurement result.
- the above table 1 shows the fields included in the channel measurement feedback elements, the length of each field and the meaning indicated by each field.
- bit size of each field shown in Table 1 above is just an example, and is not specifically limited in this application.
- the amplitude corresponding to each transmission path in Table 1 above may occupy 10 bits, 11 bits, or 12 bits, etc.
- the bits occupied by the relative delay corresponding to each transmission path in the multipath delay field in Table 1 may be 6 bits, 7 bits, or 9 bits.
- the bits occupied by the incident angle corresponding to each transmission path in the multipath signal incident angle field shown in Table 1 above may be 6 bits, 7 bits, or 9 bits.
- bit lengths of the fields in the above examples may be different.
- the order of the fields included in the channel measurement feedback element is not limited, and the above Table 1 is just an example.
- the channel measurement feedback element includes at least one of the following fields: a multipath number field, a field corresponding to at least one transmission path, and a device location information field.
- Table 2 shows the specific format of the channel measurement feedback element and another possible example of the channel measurement feedback element carrying the sensing measurement result.
- the amplitude information, time information and angle information corresponding to each transmission path are respectively carried in the fields corresponding to each transmission path.
- bit size of each field shown in the above Table 2 is just an example, and the specific application is not limited.
- the amplitude corresponding to each transmission path in Table 2 above may occupy 10 bits, 12 bits, or 14 bits, etc.
- the bits occupied by the relative time delay corresponding to each transmission path in Table 2 above may be 6 bits, 7 bits, or 9 bits.
- the bits occupied by the incident angle corresponding to each transmission path in Table 2 above may be 6 bits, 7 bits, or 9 bits.
- the order of the fields included in the channel measurement feedback element is not limited, and the above Table 2 is just an example.
- step 603a may be performed before step 603.
- the first device sends a measurement report request to the second device.
- the second device receives the measurement report request from the first device.
- the measurement report request is used to instruct the second device to feed back the sensing measurement result.
- device B and device C may send CIR feedback 1 to device A, and device C may send CIR feedback 2 to device A.
- the following introduces information such as the distance between the object in the surrounding environment and the first device, the position and the moving speed of the object in the surrounding environment determined by the first device based on the content of the perception measurement result.
- the perception measurement result includes information about the number of transmission paths.
- Device A can preliminarily determine the number of objects in the surrounding environment through the transmission path number information.
- the information on the number of transmission paths indicates three transmission paths, and device A may preliminarily determine that there are two targets.
- Device A already knows the distance of transmission path 1 (direct sight path) between device A and device B. Specifically, it can be obtained through the ranging process described above. Device A determines the time difference between the arrival time of the first PPDU on transmission path 2 at device B and the arrival time of the first PPDU on transmission path 1 at device B through the time information. And the distance between the direct-sight diameters of equipment A and equipment B is known. Therefore, device A can determine the distance of the transmission path 2 according to the distance and the time difference. Therefore, device A can determine that the distance from target 1 to device A plus the distance from target 1 to device B is equal to the distance of the transmission path 2 .
- the target 1 is located on the ellipse shown in FIG. 8 , and device A and device B are the two foci of the ellipse.
- Device A may determine the incident angle at which the first PPDU of transmission path 2 arrives at device B according to the angle information. Since the target 1 is located on the ellipse, the angle ⁇ 1 between the target 1 and the device B can be approximately equal to the incident angle of the first PPDU of the transmission path 2 arriving at the device B, so starting from the device B along the opposite direction of the incident angle direction The intersection of the ray and the ellipse is the position of target 1.
- device A can determine the distance L between target 1 and device B, and device A can subtract the distance L between target 1 and device B from the distance of transmission path 2 to obtain the distance K between target 1 and device A.
- the location of the device A is known, and the device A can determine the location of the target 1 through the distance K between the target 1 and the device A and the location of the device A.
- the above-mentioned process shown in FIG. 6 may be performed multiple times.
- Device A can determine the moving speed of target 1 based on the magnitude information of multipath signal components reported multiple times. Specifically, in a short period of time, the absolute value of the signal amplitude of the first PPDU on the transmission path 2 can be considered to be constant, but due to the Doppler effect generated by the movement of the target 1, in multiple adjacent measurements, The phase of the signal of the first PPDU on the transmission path 2 will change.
- Device A may determine the phase variation of the signal of the first PPDU on the transmission path 2 by using the amplitude information of the multipath signal components reported multiple times.
- Device A obtains the Doppler frequency by dividing the amount of phase change by the measurement time of multiple measurements. Then, device A determines the moving speed of the target 1 according to the Doppler frequency and the signal wavelength of the first PPDU transmitted on the transmission path.
- the process of determining the distance, position and moving speed between the target 2 and the device A is also similar.
- the technical solution of the present application can be applied to a UWB wireless communication system, and the first device and the second device can be two UWB devices of the UWB wireless communication system.
- the second device uses the preamble sequence or STS of the first PPDU to measure the channel impulse response, and feeds back the multipath signal component amplitude information, time information, angle information, transmission path number information, etc. corresponding to at least one transmission path. It is realized that the second device performs perception measurement on objects in the surrounding environment (for example, passive objects) through the UWB signal.
- the first device sends a first PPDU to the second device, and the first PPDU is used for sensing measurement; then, the first device receives a second PPDU from the second device, and the second PPDU includes the sensing measurement result.
- the sensing measurement result is obtained by the second device performing sensing measurement on the first PPDU.
- FIG. 9 is a schematic diagram of another embodiment of the perception measurement method of the embodiment of the present application.
- perception measurement methods include:
- the first device sends a trigger frame to the second device, where the trigger frame is used to trigger the second device to send the first PPDU.
- the second device receives the trigger frame from the first device.
- the first PPDU is used for perception measurement.
- the trigger frame may also be called a perception measurement trigger frame
- the first PPDU may also be called a perception PPDU.
- the trigger frame further includes first indication information, where the first indication information is used to instruct the second device to send the format of the first PPDU.
- the first indication message includes at least one of the following: STS key, signal time length, and STS sequence repetition times.
- the STS key is used by the second device to generate the STS.
- the signal duration is used to indicate the length of the STS.
- the number of repetitions of the STS sequence is used to indicate the number of repetitions of the STS contained in the first PPDU. That is, the STS is repeatedly placed in the first PPDU, which is beneficial for the first device to parse the STS. In this way, the second device can determine the STS through the STS key, and perform a correlation operation between the determined STS and the STS of the first PPDU to obtain a sensing measurement result. Thereby, it is beneficial to improve the security of the perception measurement.
- the second device sends the first PPDU to the first device.
- the first device receives the first PPDU from the second device.
- the second device sends the first PPDU according to the format of the first PPDU indicated by the trigger frame in step 901 above.
- the first PPDU includes a preamble sequence and an STS.
- the length of the STS is the length indicated by the above-mentioned signal time length, and the STS is generated by the above-mentioned STS key.
- device A sends a perception measurement trigger frame to device B to trigger device B to send a perception PPDU.
- Device B sends a perception PPDU to device A based on the perception measurement trigger frame.
- the technical solution of the present application may be applied to a UWB wireless communication system, and the first device and the second device may be two UWB devices of the UWB wireless communication system.
- the first PPDU may also be referred to as a perception PPDU, and the perception measurement of the surrounding environment is implemented between two UWB devices through the perception PPDU.
- the first device performs perception measurement based on the first PPDU, and obtains a perception measurement result.
- the first device uses the preamble sequence or the STS of the first PPDU to perform sensing measurement to obtain a sensing measurement result.
- the first device can use the locally determined STS to perform a correlation operation with the STS of the first PPDU to obtain a correlation result, and determine the arrival time of the first PPDU to the first device and the amplitude information of the first PPDU through the peak position of the correlation result wait.
- the perception measurement result includes at least one of the following: information on the number of transmission paths, amplitude information on multipath signal components, time information, and angle information.
- the information about the number of transmission paths is used to indicate the number of transmission paths between the first device and the second device. That is, the number of transmission paths used for communication transmission between the first device and the second device. Specifically, at least one transmission path is included between the first device and the second device, and the at least one transmission path is used for communication transmission between the first device and the second device.
- the determination of the information about the number of transmission paths is similar to step 602 in the embodiment shown in FIG. 6 , for details, please refer to the relevant introduction mentioned above.
- the multipath signal component amplitude information includes signal amplitude information corresponding to the first PPDU on the at least one transmission path.
- the multipath signal component amplitude information includes in-phase signal amplitude information and quadrature signal amplitude information.
- the amplitude information of the in-phase signal includes amplitude information of the in-phase signal corresponding to the first PPDU on at least one transmission path.
- the quadrature signal amplitude information includes an amplitude signal of the quadrature signal corresponding to the first PPDU on at least one transmission path.
- the first device determines the amplitude information of the in-phase signal and the amplitude information of the quadrature signal of the first PPDU transmitted on each transmission path, and carries them in the sensing measurement result. That is, the amplitude information of the in-phase signal and the amplitude information of the quadrature signal of the first PPDU transmitted on each transmission path represent the signal amplitude of the first PPDU transmitted on each transmission path.
- the in-phase signal amplitude information includes at least one first amplitude difference, and the at least one first amplitude difference corresponds to the at least one transmission path. That is, the at least one first amplitude difference corresponds to the at least one transmission path one by one, and each first amplitude difference corresponds to one transmission path.
- Each first amplitude difference is determined based on the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path corresponding to the first amplitude difference and the amplitude of the in-phase signal of the first PPDU transmitted on the first transmission path.
- the first transmission path is a transmission path with the strongest signal energy of the first PPDU among the at least one transmission path.
- each first amplitude difference is equal to the logarithm of the first ratio
- the first ratio is the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path corresponding to the first amplitude difference and the amplitude of the in-phase signal on the first transmission path
- the first amplitude difference please refer to the related introduction of step 602 in the embodiment shown in FIG. 6 .
- the first transmission path is used as the transmission path with the strongest signal energy of the first PPDU among the at least one transmission path.
- the first transmission path may be any transmission path in the at least one transmission path.
- the first transmission path may also be a transmission path in which the signal energy of the first PPDU in the at least one transmission path is moderate.
- the quadrature signal amplitude information includes at least one second amplitude difference, and the at least one second amplitude difference corresponds to the at least one transmission path. That is, the at least second amplitude difference corresponds to the at least one transmission path one by one, and each second amplitude difference corresponds to one transmission path.
- Each second amplitude difference is determined based on the amplitude of the quadrature signal of the first PPDU transmitted on the transmission path corresponding to the second amplitude difference and the amplitude of the quadrature signal of the first PPDU transmitted on the first transmission path.
- first transmission path please refer to the related introduction mentioned above.
- each second amplitude difference is equal to the logarithm of the second ratio
- the second ratio is the amplitude of the quadrature signal of the first PPDU transmitted on the transmission path corresponding to the second amplitude difference and the amplitude of the first transmission path The ratio between the amplitudes of the quadrature signals on the first PPDU transmitted.
- the second amplitude difference please refer to the related introduction of step 602 in the embodiment shown in FIG. 6 .
- the time information includes time information corresponding to the first PPDU on the at least one transmission path.
- the time information includes at least one delay difference, and the at least one delay difference corresponds to at least one transmission path. That is, one delay difference corresponds to one transmission path, that is, the at least one delay difference is in one-to-one correspondence with the at least one transmission path.
- Each delay difference is the difference between the arrival time of the first PPDU transmitted on the transmission path corresponding to the delay difference to the first device and the arrival time of the first PPDU transmitted on the second transmission path to the first device Time difference.
- the second transmission path is a transmission path with the shortest transmission time of the first PPDU among the at least one transmission path. That is to say, the transmission time of the first PPDU on each transmission path may be represented by a time difference between arrival times of the first PPDU on different transmission paths to the first device. Please refer to the related introduction of step 602 in the embodiment shown in FIG.
- the angle information includes angle information corresponding to the first PPDU arriving at the first device on at least one transmission path.
- the angle information includes at least one incident angle, and the at least one incident angle corresponds to the at least one transmission path.
- Each incident angle is an incident angle at which the first PPDU transmitted on the transmission path corresponding to the incident angle reaches the first device.
- multiple antennas are deployed on the first device, and the first device respectively receives the first PPDU transmitted on each transmission path through the multiple antennas.
- the first device may determine the incident angle by using a time difference between receiving times of the multiple antennas receiving the first PPDU on the transmission path.
- angle information including an incident angle at which the first PPDU on each transmission path arrives at the first device as an example.
- the angle information may also include an incident angle of each antenna among multiple antennas where the first PPDU on each transmission path arrives at the first device, which is not limited in this application. That is, the angle of incidence of the first PPDU incident on each antenna of the first device on each transmission path.
- the moving speed of the target and other information based on the content included in the perception measurement result please refer to the relevant introduction in step 603 in the embodiment shown in FIG. 6 above. I won't go into details here.
- the technical solution of the present application can be applied to a UWB wireless communication system, and the first device and the second device can be two UWB devices of the UWB wireless communication system.
- the above-mentioned embodiment shown in FIG. 9 shows a process in which the first device initiates the sensing measurement triggering process, and uses the sensing PPDU sent by the second device to perform sensing measurement.
- the second device uses the preamble sequence or STS of the first PPDU to measure the channel impulse response to obtain the multipath signal component amplitude information, time information, angle information, and transmission path corresponding to at least one transmission path between the first device and the second device Path number information, etc.
- This enables the first device to perform perception measurement on objects in the surrounding environment (for example, passive objects) through the UWB signal.
- the first device sends a trigger frame to the second device, where the trigger frame is used to trigger the second device to send a first PPDU, and the first PPDU is used for perception measurement.
- the first device receives the first PPDU from the second device, and the first device performs sensing measurement based on the first PPDU to obtain a sensing measurement result. In this way, the perception of the surrounding environment by the UWB device is realized to obtain corresponding perception measurement results. No need to feedback sensory measurements.
- FIG. 11 is a schematic structural diagram of a first communication device according to an embodiment of the present application.
- the first communication device 1100 may be used to execute the steps performed by the first device in the embodiment shown in FIG. 6 .
- FIG. 6 please refer to the relevant introduction in the embodiment shown in FIG. 6 above.
- the first communication device 1100 includes a sending unit 1101 and a receiving unit 1102 .
- the first communication device 1100 further includes a processing unit 1103 .
- the sending unit 1101 is configured to perform the sending operation of the first device in the method embodiment shown in FIG. 6 above
- the receiving unit 1102 is configured to perform the receiving operation of the first device in the method embodiment shown in FIG. 6 above.
- the processing unit 1103 is configured to execute the processing operations of the first device in the method embodiment shown in FIG. 6 above.
- the first communication device 1100 is used to implement the following solutions:
- a sending unit 1101 configured to send a first PPDU to a second communication device, where the first PPDU is used for perception measurement;
- the receiving unit 1102 is configured to receive a second PPDU from the second communication device, the second PPDU includes a sensing measurement result, and the sensing measurement result is obtained by the second communication device performing sensing measurement on the first PPDU.
- information about the number of transmission paths amplitude information of multipath signal components, time information, angle information, and location information of the second communication device
- the information on the number of transmission paths is used to indicate the number of transmission paths between the first communication device 1100 and the second communication device;
- the time information includes the time information corresponding to the first PPDU on at least one transmission path;
- the angle information includes the corresponding angle at which the first PPDU arrives at the second communication device on at least one transmission path information.
- the multipath signal component amplitude information includes in-phase signal amplitude information and quadrature signal amplitude information
- the in-phase amplitude information includes the amplitude information of the in-phase signal corresponding to the first PPDU on at least one transmission path
- the quadrature amplitude information includes amplitude information of a quadrature signal corresponding to the first PPDU on at least one transmission path.
- the in-phase signal amplitude information includes at least one first amplitude difference, and the at least one first amplitude difference corresponds to at least one transmission path, and each first amplitude difference is based on the transmission path corresponding to the first amplitude difference.
- the amplitude of the in-phase signal of the first PPDU transmitted on the path and the amplitude of the in-phase signal of the first PPDU transmitted on the first transmission path are determined, and the first transmission path is the signal energy of the first PPDU in at least one transmission path.
- the quadrature signal amplitude information includes at least one second amplitude difference, at least one second amplitude difference corresponds to at least one transmission path, and each second amplitude difference is transmitted based on the transmission path corresponding to the second amplitude difference
- the amplitude of the quadrature signal of the first PPDU is determined from the amplitude of the quadrature signal of the first PPDU transmitted on the first transmission path.
- each first amplitude difference is equal to the logarithm of the first ratio
- the first ratio is the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path corresponding to the first amplitude difference and The ratio between the amplitudes of the in-phase signals of the first PPDU transmitted on the first transmission path
- each second amplitude difference is equal to the logarithm of the second ratio
- the second ratio is the transmission path corresponding to the second amplitude difference The ratio between the amplitude of the quadrature signal of the first PPDU transmitted on the network and the amplitude of the quadrature signal of the first PPDU transmitted on the first transmission path.
- the time information includes at least one delay difference, at least one delay difference corresponds to at least one transmission path, and each delay difference is the first PPDU transmitted on the transmission path corresponding to the delay difference the time difference between the time of arrival at the second communication device and the time of arrival at the second communication device of the first PPDU transmitted on the second transmission path, the second transmission path being the transmission time of the first PPDU of at least one transmission path with the minimum transmission path.
- the angle information includes at least one incident angle, and at least one incident angle corresponds to at least one transmission path, and each incident angle is when the first PPDU transmitted on the transmission path corresponding to the incident angle reaches the second communication The angle of incidence of the device.
- the location information of the second communication device includes at least one of the following: longitude information where the second communication device is located, latitude information where the second communication device is located, and altitude information where the second communication device is located.
- the sending unit 1101 is further configured to:
- sensing measurement request is used to request the second communication device to assist the first communication device 1100 in performing sensing measurement
- the receiving unit 1102 is also used for:
- a sensing measurement consent response is received from the second communication device, where the sensing measurement consent response is used to indicate that the second communication device agrees to assist the first communication device 1100 in performing sensing measurement.
- the sending unit 1101 is further configured to:
- the second PPDU includes a channel measurement feedback element, and the sensing measurement result is carried in the channel measurement feedback element.
- the channel measurement feedback element includes at least one of the following fields: multipath number field, multipath amplitude field, multipath delay field, multipath signal incident angle field and device location information field; multipath The number field is used to carry the number information of transmission paths, the multipath amplitude field is used to carry the multipath signal component amplitude information, the multipath delay field is used to carry time information, and the multipath signal incident angle field is used to carry angle information.
- the location information field is used to carry location information of the second communication device.
- FIG. 12 is a schematic structural diagram of a second communication device according to an embodiment of the present application.
- the second communication apparatus 1200 may be configured to execute the steps performed by the second device in the embodiment shown in FIG. 6 .
- relevant introductions in the above embodiment shown in FIG. 6 please refer to relevant introductions in the above embodiment shown in FIG. 6 .
- the second communication device 1200 includes a receiving unit 1201 , a processing unit 1202 and a sending unit 1203 .
- the receiving unit 1202 is configured to execute the receiving operation of the second device in the method embodiment shown in FIG. 6 above
- the processing unit 1202 is configured to execute the processing operation of the second device in the method embodiment shown in FIG. Execute the sending operation of the second device in the method embodiment shown in FIG. 6 above.
- the second communication device 1200 is used to implement the following solutions:
- a receiving unit 1201, configured to receive a first PPDU from a first communication device
- the processing unit 1202 is configured to perform perception measurement on the first PPDU, and obtain a perception measurement result
- a sending unit 1203, configured to send a second PPDU to the first communication device, where the second PPDU includes a perception measurement result.
- information about the number of transmission paths amplitude information of multipath signal components, time information, angle information, and location information of the second communication device 1200;
- the information on the number of transmission paths is used to indicate the number of transmission paths between the first communication device and the second communication device 1200;
- the time information includes the time information corresponding to the first PPDU on at least one transmission path;
- the angle information includes the corresponding time information on the first PPDU arriving at the second communication device 1200 on at least one transmission path angle information.
- the multipath signal component amplitude information includes in-phase signal amplitude information and quadrature signal amplitude information
- the in-phase amplitude information includes the amplitude information of the in-phase signal corresponding to the first PPDU on at least one transmission path
- the quadrature amplitude information includes amplitude information of a quadrature signal corresponding to the first PPDU on at least one transmission path.
- the in-phase signal amplitude information includes at least one first amplitude difference, and the at least one first amplitude difference corresponds to at least one transmission path, and each first amplitude difference is based on the transmission path corresponding to the first amplitude difference.
- the amplitude of the in-phase signal of the first PPDU transmitted on the path and the amplitude of the in-phase signal of the first PPDU transmitted on the first transmission path are determined, and the first transmission path is the signal energy of the first PPDU in at least one transmission path.
- the quadrature signal amplitude information includes at least one second amplitude difference, at least one second amplitude difference corresponds to at least one transmission path, and each second amplitude difference is transmitted based on the transmission path corresponding to the second amplitude difference
- the amplitude of the quadrature signal of the first PPDU is determined from the amplitude of the quadrature signal of the first PPDU transmitted on the first transmission path.
- each first amplitude difference is equal to the logarithm of the first ratio
- the first ratio is the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path corresponding to the first amplitude difference and The ratio between the amplitudes of the in-phase signals of the first PPDU transmitted on the first transmission path
- each second amplitude difference is equal to the logarithm of the second ratio
- the second ratio is the transmission path corresponding to the second amplitude difference The ratio between the amplitude of the quadrature signal of the first PPDU transmitted on the network and the amplitude of the quadrature signal of the first PPDU transmitted on the first transmission path.
- the time information includes at least one delay difference, at least one delay difference corresponds to at least one transmission path, and each delay difference is the first PPDU transmitted on the transmission path corresponding to the delay difference
- the time difference between the time of arrival at the second communication device 1200 and the time of arrival at the second communication device 1200 of the first PPDU transmitted over a second transmission path, the second transmission path being the transmission of the first PPDU in at least one transmission path The time-minimized transmission path.
- the angle information includes at least one incident angle, and at least one incident angle corresponds to at least one transmission path, and each incident angle is when the first PPDU transmitted on the transmission path corresponding to the incident angle reaches the second communication The angle of incidence of the device 1200.
- the location information of the second communication device 1200 includes at least one of the following: longitude information where the second communication device 1200 is located, latitude information where the second communication device 1200 is located, and location information where the second communication device 1200 is located. Altitude information.
- the receiving unit 1201 is further configured to:
- the sending unit 1203 is also used for:
- a sensing measurement consent response is sent to the first communication device, where the sensing measurement consent response is used to indicate that the second communication device 1200 agrees to assist the first communication device in performing sensing measurement.
- the receiving unit 1201 is further configured to:
- a measurement report request is received from the first communication device, where the measurement report request is used to request the second communication device 1200 to feed back a perception measurement result.
- the second PPDU includes a channel measurement feedback element, and the sensing measurement result is carried in the channel measurement feedback element.
- the channel measurement feedback element includes at least one of the following fields: multipath number field, multipath amplitude field, multipath delay field, multipath signal incident angle field and device location information field; multipath The number field is used to carry the number information of transmission paths, the multipath amplitude field is used to carry the multipath signal component amplitude information, the multipath delay field is used to carry time information, and the multipath signal incident angle field is used to carry angle information.
- the location information field is used to carry location information of the second communication device 1200 .
- FIG. 13 is a schematic structural diagram of a first communication device according to an embodiment of the present application.
- the first communication apparatus 1300 may be configured to execute the steps performed by the first device in the embodiment shown in FIG. 9 .
- FIG. 9 please refer to the related introduction in the embodiment shown in FIG. 9 .
- the first communication device 1300 includes a sending unit 1301 , a receiving unit 1303 and a processing unit 1303 .
- the sending unit 1301 is configured to perform the sending operation of the first device in the method embodiment shown in FIG. 9 above
- the receiving unit 1302 is configured to perform the receiving operation of the first device in the method embodiment shown in FIG. 9 above.
- the processing unit 1303 is configured to execute the processing operations of the first device in the method embodiment shown in FIG. 9 above.
- the first communication device 1300 is used to implement the following solutions:
- a sending unit 1301, configured to send a trigger frame to the second communication device, where the trigger frame is used to trigger the second communication device to send a first PPDU, and the first PPDU is used for perception measurement;
- the processing unit 1303 is configured to perform perception measurement based on the first PPDU, and obtain a perception measurement result.
- the trigger frame includes first indication information, and the first indication information is used to instruct the second communication apparatus to send a format of the first PPDU.
- the first indication information includes at least one of the following: an STS key, a signal time length, and an STS sequence repetition number.
- the perception measurement result includes at least one of the following: information about the number of transmission paths, amplitude information about multipath signal components, time information, and angle information.
- the transmission path number information is used to indicate the number of transmission paths between the first communication device 1300 and the second communication device;
- the multipath signal component amplitude information includes the first PPDU between the first communication device 1300 and the second communication device The corresponding signal amplitude information on at least one transmission path between them;
- the time information includes the time information corresponding to the first PPDU on the at least one transmission path;
- the angle information includes the first PPDU arriving at the first communication device 1300 on at least one transmission path Corresponding angle information.
- the multipath signal component amplitude information includes in-phase signal amplitude information and quadrature signal amplitude information
- the in-phase amplitude information includes the amplitude information of the in-phase signal corresponding to the first PPDU on at least one transmission path
- the quadrature amplitude information includes amplitude information of a quadrature signal corresponding to the first PPDU on at least one transmission path.
- the in-phase signal amplitude information includes at least one first amplitude difference, and the at least one first amplitude difference corresponds to at least one transmission path, and each first amplitude difference is based on the transmission path corresponding to the first amplitude difference.
- the amplitude of the in-phase signal of the first PPDU transmitted on the path and the amplitude of the in-phase signal of the first PPDU transmitted on the first transmission path are determined, and the first transmission path is the signal capability of the first PPDU in at least one transmission path.
- the quadrature signal amplitude information includes at least one second amplitude difference, at least one second amplitude difference corresponds to at least one transmission path, and each second amplitude difference is transmitted based on the transmission path corresponding to the second amplitude difference
- the amplitude of the quadrature signal of the first PPDU is determined from the amplitude of the quadrature signal of the first PPDU transmitted on the first transmission path.
- each first amplitude difference is equal to the logarithm of the first ratio
- the first ratio is the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path corresponding to the first amplitude difference and The ratio between the amplitudes of the in-phase signals of the first PPDU transmitted on the first transmission path
- each second amplitude difference is equal to the logarithm of the second ratio
- the second ratio is the transmission path corresponding to the second amplitude difference The ratio between the amplitude of the quadrature signal of the first PPDU transmitted on the network and the amplitude of the quadrature signal of the first PPDU transmitted on the first transmission path.
- the time information includes at least one delay difference, at least one delay difference corresponds to at least one transmission path, and each delay difference is the first PPDU transmitted on the transmission path corresponding to the delay difference
- the time difference between the arrival time of the first communication device 1300 and the arrival time of the first PPDU transmitted on the second transmission path to the first communication device 1300, the second transmission path being the first PPDU in at least one transmission path The transmission path with the minimum transmission time.
- the angle information includes at least one incident angle, at least one incident angle corresponds to at least one transmission path, and each incident angle is the first PPDU transmitted on the transmission path corresponding to the incident angle to reach the first communication The angle of incidence of the device 1300.
- FIG. 14 is a schematic structural diagram of a second communication device according to an embodiment of the present application.
- the second communication apparatus 1400 may be configured to execute the steps performed by the second device in the embodiment shown in FIG. 9 .
- FIG. 9 please refer to the related introduction in the embodiment shown in FIG. 9 .
- the second communication device 1400 includes a receiving unit 1401 and a sending unit 1402 .
- the second communication device 1400 further includes a processing unit 1403 .
- the receiving unit 1401 is configured to perform the receiving operation of the second device in the method embodiment shown in FIG. 9 above
- the sending unit 1402 is configured to perform the sending operation of the second device in the method embodiment shown in FIG. 9 above.
- the second communication device 1400 is used to implement the following solutions:
- the receiving unit 1401 is configured to receive a trigger frame from the first communication device, the trigger frame is used to trigger the first communication device to send a first PPDU, and the first PPDU is used for perception measurement;
- the sending unit 1402 is configured to send the first PPDU to the first communication device.
- the trigger frame includes first indication information, and the first indication information is used to instruct the second communication apparatus 1400 to send the format of the first PPDU.
- the first indication information includes at least one of the following: an STS key, a signal time length, and an STS sequence repetition number.
- the perception measurement result includes at least one of the following: information about the number of transmission paths, amplitude information about multipath signal components, time information, and angle information.
- the information on the number of transmission paths is used to indicate the number of transmission paths between the first communication device and the second communication device 1400;
- the time information includes the time information corresponding to the first PPDU on the at least one transmission path;
- the angle information includes the first PPDU on at least one transmission path angle information.
- the multipath signal component amplitude information includes in-phase signal amplitude information and quadrature signal amplitude information
- the in-phase amplitude information includes the amplitude information of the in-phase signal corresponding to the first PPDU on at least one transmission path
- the quadrature amplitude information includes amplitude information of a quadrature signal corresponding to the first PPDU on at least one transmission path.
- the in-phase signal amplitude information includes at least one first amplitude difference, and the at least one first amplitude difference corresponds to at least one transmission path, and each first amplitude difference is based on the transmission path corresponding to the first amplitude difference.
- the amplitude of the in-phase signal of the first PPDU transmitted on the path and the amplitude of the in-phase signal of the first PPDU transmitted on the first transmission path are determined, and the first transmission path is the signal capability of the first PPDU in at least one transmission path.
- the quadrature signal amplitude information includes at least one second amplitude difference, at least one second amplitude difference corresponds to at least one transmission path, and each second amplitude difference is transmitted based on the transmission path corresponding to the second amplitude difference
- the amplitude of the quadrature signal of the first PPDU is determined from the amplitude of the quadrature signal of the first PPDU transmitted on the first transmission path.
- each first amplitude difference is equal to the logarithm of the first ratio
- the first ratio is the amplitude of the in-phase signal of the first PPDU transmitted on the transmission path corresponding to the first amplitude difference and The ratio between the amplitudes of the in-phase signals of the first PPDU transmitted on the first transmission path
- each second amplitude difference is equal to the logarithm of the second ratio
- the second ratio is the transmission path corresponding to the second amplitude difference The ratio between the amplitude of the quadrature signal of the first PPDU transmitted on the network and the amplitude of the quadrature signal of the first PPDU transmitted on the first transmission path.
- the time information includes at least one delay difference, at least one delay difference corresponds to at least one transmission path, and each delay difference is the first PPDU transmitted on the transmission path corresponding to the delay difference the time difference between the time of arrival at the first communication device and the time of arrival at the first communication device of the first PPDU transmitted over a second transmission path, the second transmission path being the first PPDU in at least one transmission path The transmission path with the minimum transmission time.
- the angle information includes at least one incident angle, at least one incident angle corresponds to at least one transmission path, and each incident angle is the first PPDU transmitted on the transmission path corresponding to the incident angle to reach the first communication The angle of incidence of the device.
- the embodiment of the present application also provides a first communication device. Please refer to FIG. 15 , which is another schematic structural diagram of the first communication device in the embodiment of the present application.
- the first communication device can be used to execute the For the steps performed by the first device in this embodiment, reference may be made to the relevant descriptions in the foregoing method embodiments.
- the first communication device includes a processor 1501 .
- the first communication device further includes a memory 1502 and a transceiver 1503 .
- the processor 1501, the memory 1502 and the transceiver 1503 are respectively connected through a bus, and computer instructions are stored in the memory.
- the sending unit 1101 and the receiving unit 1102 shown in FIG. 11 may specifically be the transceiver 1503, so the specific implementation of the transceiver 1503 will not be repeated here.
- the aforementioned processing unit 1103 shown in FIG. 11 may specifically be the processor 1501 , so the specific implementation of the processor 1501 will not be repeated here.
- the sending unit 1301 and the receiving unit 1302 shown in FIG. 13 may specifically be the transceiver 1503, so the specific implementation of the transceiver 1503 will not be repeated here.
- the aforementioned processing unit 1303 shown in FIG. 11 may specifically be the processor 1501 , so the specific implementation of the processor 1501 will not be repeated here.
- the embodiment of the present application also provides a second communication device. Please refer to FIG. 16 , which is another schematic structural diagram of the second communication device in the embodiment of the present application.
- the second communication device can be used to implement the For the steps performed by the second device in this embodiment, reference may be made to the relevant descriptions in the foregoing method embodiments.
- the second communication device includes: a processor 1601 .
- the second communication device further includes a memory 1602 and a transceiver 1603 .
- the processor 1601, the memory 1602 and the transceiver 1603 are respectively connected through a bus, and computer instructions are stored in the memory.
- the receiving unit 1201 and the sending unit 1203 shown in FIG. 12 may specifically be the transceiver 1603, so the specific implementation of the transceiver 1603 will not be repeated here.
- the aforementioned processing unit 1202 shown in FIG. 12 may specifically be the processor 1601 , and thus the specific implementation of the processor 1601 will not be repeated here.
- the receiving unit 1401 and the sending unit 1402 shown in FIG. 14 may specifically be the transceiver 1603, so the specific implementation of the transceiver 1603 will not be repeated here.
- the aforementioned processing unit 1402 shown in FIG. 14 may specifically be the processor 1601 , so the specific implementation of the processor 1601 will not be repeated here.
- the present application also provides a communication system, the communication system includes a first device and a second device, the first device is used to perform the steps performed by the first device in the embodiment shown in Figure 6 and Figure 9, and the second device is used to Execute the steps performed by the second device in the embodiment shown in FIG. 6 and FIG. 9 .
- An embodiment of the present application provides a computer program product including instructions, which is characterized in that, when it is run on a computer, any implementation manner in the embodiments shown in FIG. 6 and FIG. 9 is executed.
- An embodiment of the present application provides a computer-readable storage medium, including computer instructions. When the instructions are run on a computer, any implementation manner of the embodiments shown in FIG. 6 and FIG. 9 is executed.
- An embodiment of the present application provides a chip device, including a processor, configured to call a computer program or a computer instruction in the memory, so that any implementation manner in the above-mentioned embodiments shown in FIG. 6 and FIG. 9 is executed.
- the chip device further includes a memory, which is used to store computer programs or computer instructions.
- the chip device is composed of chips, and may also include chips and other discrete devices.
- the processor is coupled with the memory through an interface.
- the disclosed system, device and method can be implemented in other ways.
- the device embodiments described above are only illustrative.
- the division of the units is only a logical function division. In actual implementation, there may be other division methods.
- multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
- the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
- the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
- the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
- the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
- the essence of the technical solution of this application or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium.
- a computer device which may be a personal computer, a server, or a network device, etc.
- the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .
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Abstract
Description
Claims (28)
- 一种感知测量方法,其特征在于,所述方法包括:第一设备向第二设备发送第一物理层协议数据单元PPDU,所述第一PPDU用于感知测量;所述第一设备接收来自所述第二设备的第二PPDU,所述第二PPDU包括感知测量结果,所述感知测量结果是所述第二设备对所述第一PPDU进行感知测量得到。
- 一种感知测量方法,其特征在于,所述方法包括:第二设备接收来自第一设备的第一物理层协议数据单元PPDU;所述第二设备对所述第一PPDU进行感知测量,得到感知测量结果;所述第二设备向所述第一设备发送第二PPDU,所述第二PPDU包括所述感知测量结果。
- 根据权利要求1或2所述的方法,其特征在于,所述感知测量结果包括以下至少一项:传输路径个数信息、多径信号分量幅度信息、时间信息、角度信息、所述第二设备的位置信息;其中,所述传输路径个数信息用于指示所述第一设备与所述第二设备之间的传输路径的数目;所述多径信号分量幅度信息包括所述第一PPDU在所述第一设备与所述第二设备之间的至少一条传输路径上对应的信号幅度信息;所述时间信息包括所述第一PPDU在所述至少一条传输路径上对应的时间信息;所述角度信息包括所述第一PPDU在所述至少一条传输路径上到达所述第二设备对应的角度信息。
- 根据权利要求3所述的方法,其特征在于,所述多径信号分量幅度信息包括同相信号幅度信息和正交信号幅度信息,所述同相幅度信息包括所述第一PPDU在所述至少一条传输路径上对应的同相信号的幅度信息,所述正交幅度信息包括所述第一PPDU在所述至少一条传输路径上对应的正交信号的幅度信息。
- 根据权利要求4所述的方法,其特征在于,所述同相信号幅度信息包括至少一个第一幅度差,所述至少一个第一幅度差与所述至少一个传输路径对应,每个第一幅度差是基于所述第一幅度差对应的传输路径上传输的所述第一PPDU的同相信号的幅度和第一传输路径上传输的所述第一PPDU的同相信号的幅度确定的,所述第一传输路径是所述至少一条传输路径中所述第一PPDU的信号能量最强的传输路径;所述正交信号幅度信息包括至少一个第二幅度差,所述至少一个第二幅度差与所述至少一个传输路径对应,每个第二幅度差是基于所述第二幅度差对应的传输路径上传输的所述第一PPDU的正交信号的幅度与所述第一传输路径上传输的所述第一PPDU的正交信号的幅度确定的。
- 根据权利要求5所述的方法,其特征在于,每个第一幅度差等于对第一比值取对数,所述第一比值为在所述第一幅度差对应的传输路径上传输的所述第一PPDU的同相信号的幅度与在所述第一传输路径上传输的第一PPDU的同相信号的幅度之间的比值;每个第二幅度差等于对第二比值取对数,所述第二比值为在所述第二幅度差对应的传输路径上传输的所述第一PPDU的正交信号的幅度与所述第一传输路径上传输的所述第一PPDU的正交信号的幅度之间的比值。
- 根据权利要求2至6中任一项所述的方法,其特征在于,所述时间信息包括至少一个时延差,所述至少一个时延差与所述至少一条传输路径对应,每个时延差是在所述时延差对应的传输路径上传输的所述第一PPDU到达所述第二设备的到达时间与在第二传输路径上传输的所述第一PPDU到达所述第二设备的到达时间之间的时间差,所述第二传输路径是所述至少一条传输路径中所述第一PPDU的传输时间最小的传输路径。
- 根据权利要求2至7中任一项所述的方法,其特征在于,所述角度信息包括至少一个入射角度,所述至少一个入射角度与所述至少一条传输路径对应,每个入射角度是在所述入射角度对应的传输路径上传输的所述第一PPDU到达所述第二设备的入射角度。
- 根据权利要求2至8中任一项所述的方法,其特征在于,所述第二设备的位置信息包括以下至少一项:所述第二设备所在的经度信息、所述第二设备所在的纬度信息、所述第二设备所在的海拔高度信息。
- 根据权利要求1、3至9中任一项所述的方法,其特征在于,所述第一设备向第二设备发送第一物理层协议数据单元PPDU之前,所述方法还包括:所述第一设备向所述第二设备发送感知测量请求,所述感知测量请求用于请求所述第二设备协助所述第一设备进行感知测量;所述第一设备接收来自所述第二设备的感知测量同意响应,所述感知测量同意响应用于指示所述第二设备同意协助所述第一设备进行感知测量。
- 根据权利要求10所述的方法,其特征在于,在所述第一设备向第二设备发送第一物理层协议数据单元PPDU之后,所述第一设备接收来自所述第二设备的第二PPDU之前,所述方法还包括:所述第一设备向所述第二设备的测量报告请求,所述测量报告请求用于请求所述第二设备反馈所述感知测量结果。
- 根据权利要求2、3至9中任一项所述的方法,其特征在于,所述第二设备接收来自第一设备的第一物理层协议数据单元PPDU之前,所述方法还包括:所述第二设备接收来自所述第一设备的感知测量请求,所述感知测量请求用于请求所述第二设备协助所述第一设备进行感知测量;所述第二设备向所述第一设备发送感知测量同意响应,所述感知测量同意响应用于指示所述第二设备同意协助所述第一设备进行感知测量。
- 根据权利要求12所述的方法,其特征在于,在所述第二设备接收来自第一设备的第一物理层协议数据单元PPDU之后,所述第二设备向所述第一设备发送第二PPDU之前,所述方法还包括:所述第二设备接收来自所述第一设备的测量报告请求,所述测量报告请求用于请求所述第二设备反馈所述感知测量结果。
- 一种感知测量方法,其特征在于,所述方法包括:第一设备向第二设备发送触发帧,所述触发帧用于触发所述第二设备发送第一物理层协议数据单元PPDU,所述第一PPDU用于感知测量;所述第一设备接收来自所述第二设备的所述第一PPDU;所述第一设备基于所述第一PPDU进行感知测量,得到感知测量结果。
- 一种感知测量方法,其特征在于,所述方法包括:第二设备接收来自第一设备的触发帧,所述触发帧用于触发所述第一设备发送第一物理层协议数据单元PPDU,所述第一PPDU用于感知测量;所述第二设备向所述第一设备发送所述第一PPDU。
- 根据权利要求14或15所述的方法,其特征在于,所述触发帧包括第一指示信息,所述第一指示信息用于指示所述第二设备发送所述第一PPDU的格式。
- 根据权利要求16所述的方法,其特征在于,所述第一指示信息包括以下至少一项:加扰的时间戳序列STS秘钥、信号时间长度、STS序列重复次数。
- 根据权利要求14至17中任一项所述的方法,其特征在于,所述感知测量结果包括以下至少一项:传输路径个数信息、多径信号分量幅度信息、时间信息、角度信息;其中,所述传输路径个数信息用于指示所述第一设备与所述第二设备之间的传输路径的数目;所述多径信号分量幅度信息包括所述第一PPDU在所述第一设备与所述第二设备之间的至少一条传输路径上对应的信号幅度信息;所述时间信息包括所述第一PPDU在所述至少一条传输路径上对应的时间信息;所述角度信息包括所述第一PPDU在所述至少一条传输路径上到达所述第一设备对应的角度信息。
- 根据权利要求18所述的方法,其特征在于,所述多径信号分量幅度信息包括同相信号幅度信息和正交信号幅度信息,所述同相幅度信息包括所述第一PPDU在所述至少一条传输路径上对应的同相信号的幅度信息,所述正交幅度信息包括所述第一PPDU在所述至少一条传输路径上对应的正交信号的幅度信息。
- 根据权利要求19所述的方法,其特征在于,所述同相信号幅度信息包括至少一个第一幅度差,所述至少一个第一幅度差与所述至少一个传输路径对应,每个第一幅度差是基于所述第一幅度差对应的传输路径上传输的所述第一PPDU的同相信号的幅度和第一传输路径上传输的所述第一PPDU的同相信号的幅度确定的,所述第一传输路径是所述至少一条传输路径中所述第一PPDU的信号能力最强的传输路径;所述正交信号幅度信息包括至少一个第二幅度差,所述至少一个第二幅度差与所述至少一个传输路径对应,每个第二幅度差是基于所述第二幅度差对应的传输路径上传输的所述第一PPDU的正交信号的幅度与所述第一传输路径上传输的所述第一PPDU的正交信号的幅度确定的。
- 根据权利要求20所述的方法,其特征在于,每个第一幅度差等于对第一比值取对数,所述第一比值为在所述第一幅度差对应的传输路径上传输的所述第一PPDU的同相信号的幅度与在所述第一传输路径上传输的第一PPDU的同相信号的幅度之间的比值;每个第二幅度差等于对第二比值取对数,所述第二比值为在所述第二幅度差对应的传输路径上传输的所述第一PPDU的正交信号的幅度与所述第一传输路径上传输的所述第一PPDU的正交信号的幅度之间的比值。
- 根据权利要求18至21中任一项所述的方法,其特征在于,所述时间信息包括至少一个时延差,所述至少一个时延差与所述至少一条传输路径对应,每个时延差是在所述时 延差对应的传输路径上传输的所述第一PPDU到达所述第一设备的到达时间与在第二传输路径上传输的所述第一PPDU到达所述第一设备的到达时间之间的时间差,所述第二传输路径是所述至少一条传输路径中所述第一PPDU的传输时间最小的传输路径。
- 根据权利要求18至22中任一项所述的方法,其特征在于,所述角度信息包括至少一个入射角度,所述至少一个入射角度与所述至少一条传输路径对应,每个入射角度是在所述入射角度对应的传输路径上传输的所述第一PPDU到达所述第一设备的入射角度。
- 一种通信装置,其特征在于,所述通信装置包括:存储器,用于存储计算机指令;处理器,用于执行所述存储器中存储的计算机程序或计算机指令,使得如权利要求1至13中任一项所述的方法被执行,或者,使得如权利要求14至23中任一项所述的方法被执行。
- 一种通信装置,其特征在于,所述通信装置包括处理器,所述处理器用于执行存储器中的计算机程序或计算机指令,使得如权利要求1至13中任一项所述的方法被执行,或者,使得如权利要求14至23中任一项所述的方法被执行。
- 一种通信装置,其特征在于,所述通信装置包括处理器,所述处理器用于执行如权利要求1至13中任一项所述的方法,或者,用于执行如权利要求14至23中任一项所述的方法。
- 一种包含程序指令的计算机程序产品,当所述程序指令在计算机上运行时,使得如权利要求1至13任一项所述的方法被执行,或者,使得如权利要求14至23任一项所述的方法被执行。
- 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质中存储程序指令,当所述程序指令运行时,使得如权利要求1至13任一项所述的方法被执行,或者,使得如权利要求14至23任一项所述的方法被执行。
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CN116074884A (zh) | 2023-05-05 |
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