Perception method and corresponding device

Abstract

The invention provides a sensing method which can be applied to an MIMO sensing communication system, and the method comprises the steps: a first communication device can determine a signal configuration parameter of a second transmitting port according to a speed measurement demand, a carrier parameter, the number of first transmitting ports, and a first modulation type; wherein the second transmitting port is included in the first transmitting port, and the first modulation type is at least one of signal modulation types supported by the first transmitting port; sending a signal configuration parameter; the transmitting end can transmit a sensing signal according to the signal configuration parameter. According to the scheme, the signal configuration parameter is related to the speed measurement requirement, so that the sensing signal sent based on the signal configuration parameter can well measure the moving sensing target in the speed measurement requirement range, the speed measurement performance can be improved, and the sensing quality is improved.

Description

Technical Field

[0001] This application relates to the field of communication technology, specifically to a sensing method and corresponding device. Background Technology

[0002] Multiple-input multiple-output (MIMO) is a wireless communication technology that uses multiple antennas to transmit and receive signals. Currently, this technology has been applied to radar for sensing, also known as MIMO sensing. MIMO radar systems can achieve better spatial resolution using fewer transmit and receive antenna elements. MIMO sensing refers to sensing using MIMO modes. In MIMO sensing, the signals transmitted by the transmitting antennas are typically orthogonal, allowing the receiving antennas to separate signals from different transmission channels. Moreover, when the number of transmitting antennas is M and the number of receiving antennas is N, the receiver can achieve a signal processing gain of M x N times.

[0003] Current MIMO sensing technology typically struggles to accurately measure moving targets. Therefore, improving velocity measurement performance using MIMO sensing is a pressing issue that needs to be addressed. Summary of the Invention

[0004] This application provides a sensing method for improving the velocity measurement performance of a moving target. This application also provides corresponding apparatus, computer-readable storage media, and computer program products.

[0005] A first aspect of this application provides a sensing method applied to a first communication device. The method includes: determining signal configuration parameters of a second transmission port based on speed measurement requirements, carrier parameters, the number of first transmission ports, and a first modulation type; wherein the second transmission port is included in the first transmission port, and the first modulation type is at least one of the signal modulation types supported by the first transmission port; and transmitting the signal configuration parameters; wherein the signal configuration parameters are used by the second transmission port to transmit a sensing signal.

[0006] In this application, the first communication device can be a central node or a receiving end. The central node can be a node that configures sensing parameters for the transmitting end or the receiving end of the sensing signal, and / or a node that summarizes the sensing results. The central node can be an access network device or a chip in the access network device; of course, the central node can also be other types of devices.

[0007] In this application, the speed measurement requirement may include the maximum and minimum speeds that need to be sensed; or, scene indication information, which is used to indicate the speed range that needs to be sensed.

[0008] In this application, the parameters of the carrier may include the carrier wavelength, frequency, or pulse repetition frequency (PRF).

[0009] In this application, the modulation type can be an orthogonal signal type, which can include the following types: time division multiple access (TDMA), frequency division multiple access (FDMA), code division multiple access (CDMA), doppler diversity multiple access (DDMA), empty-band based DDMA, etc.

[0010] In this application, "the second transmission port is included in the first transmission port" means that the second transmission port is part or all of the first transmission port.

[0011] In this application, the signal configuration parameters refer to the parameters required to generate the sensing signal of the second transmitting port, such as the index of the second transmitting port and the first modulation type.

[0012] In the first aspect mentioned above, the first communication device can determine the signal configuration parameters of the second transmission port based on the speed measurement requirement, the parameters of the carrier, the number of the first transmission ports, and the first modulation type; in this way, the sensing signal transmitted based on the signal configuration parameters can better measure the moving sensing target within the speed measurement requirement range, thereby improving the speed measurement performance and enhancing the sensing quality.

[0013] If the first communication device is a transmitter, the first aspect mentioned above may be: determining the signal configuration parameters of the second transmitter port based on the speed measurement requirements, the parameters of the carrier, the number of the first transmitter ports, and the first modulation type; wherein the second transmitter port is included in the first transmitter port, and the first modulation type is at least one of the signal modulation types supported by the first transmitter port; and transmitting a sensing signal according to the signal configuration parameters.

[0014] In one possible implementation, the first modulation type satisfies the signal-to-noise ratio requirement.

[0015] In this possible implementation, the first modulation type satisfies the signal-to-noise ratio requirement, which can narrow down the range of modulation types for the sensed signal, thereby determining a more suitable modulation type for the sensed signal. This not only saves sensing resources but also improves speed measurement performance.

[0016] In one possible implementation, the above steps, namely: determining the signal configuration parameters of the second transmission port based on the speed measurement requirements, carrier parameters, the number of first transmission ports, and the first modulation type, include: determining the first time domain period based on the speed measurement requirements, carrier parameters, and the number of first transmission ports; and determining the signal configuration parameters of the second transmission port based on the first modulation type, the first time domain period, and the number of first transmission ports.

[0017] In this possible implementation, a first time-domain period can be determined first. Combined with the modulation type, different time-domain periods can have corresponding signal configuration parameters. If pre-configuration is done through the modulation type and time-domain period, only a small amount of signal configuration parameters needs to be transmitted to the transmitter during transmission. The transmitter can then find the signal configuration parameters used to generate the sensing signal. This saves air interface overhead.

[0018] In one possible implementation, the signal configuration parameters include an index of the second transmission port and a first mapping relationship, which includes a mapping relationship between the index of the second transmission port and the configuration information of the sensing signal.

[0019] In this possible implementation, sending the index of the second transmission port and the first mapping relationship to the transmitter helps the transmitter determine the configuration information of the sensing signal corresponding to the second transmission port, thereby improving the speed of transmitting the sensing signal.

[0020] In one possible implementation, the method further includes: an index of the receiving port and a first mapping relationship, the first mapping relationship being used for the receiving port to process the echo signal of the sensed signal.

[0021] In this possible implementation, the first communication device sends the index of the receiving port and the first mapping relationship to the receiving end, which helps the corresponding receiving port of the receiving end to better process the echo signal of the sensed signal.

[0022] In one possible implementation, the configuration information of the sensing signal includes indication information of a first modulation type, retrieval information, and relational information; wherein, the indication information of the first modulation type is used to determine the first modulation type; the retrieval information is used to retrieve basic information of the sensing signal under the first modulation type, the basic information including indication information of the number of sensing signals, and at least one of the following: subcarrier spacing of frequency division multiple access, time interval of time division multiple access, signal coding strategy of code division multiple access, or phase offset of Doppler multiple access; the relational information is used to indicate the correspondence between sensing signals of different second transmission ports, and / or the sequential relationship between different sensing signals corresponding to the same second transmission port.

[0023] In this application, retrieval information is used to retrieve basic information from a table. The retrieval information may include row indexes in the table or a first time-domain period.

[0024] In this possible implementation, the first modulation type can be determined by the indication information of the first modulation type. Then, by retrieving information and combining it with the first modulation type, basic information can be retrieved. Then, by combining it with the relationship information, the accurate correspondence between the second transmitting port and the sensing signal can be achieved, thereby improving the accuracy of the sensing signal.

[0025] In one possible implementation, the indication information of the first modulation type is represented by a first bit and / or a second bit among a plurality of bits, wherein the first bit and the second bit are respectively associated with different first modulation types.

[0026] In this possible implementation, the indication information of the first modulation type can be represented by multiple bits, wherein the first bit can be one or more bits preceding the first bit, and the second bit can be one or more bits following the first bit. Using multiple bits to indicate the first modulation type can concisely indicate one or more modulation types supported by the second transmit port.

[0027] In one possible implementation, the first modulation type satisfies the signal-to-noise ratio requirement by: the first signal-to-noise ratio corresponding to the first modulation type is greater than the signal-to-noise ratio requirement; wherein, the first signal-to-noise ratio is determined based on the transmit power of the first transmit port, the noise energy of the first transmit port, and the first time-domain period, and the first time-domain period is determined based on the velocity measurement requirement, the parameters of the carrier, and the number of the first transmit ports.

[0028] In this possible implementation, the signal-to-noise ratio (SNR) of each modulation type supported by the first transmitting port can be determined based on the transmission power, noise energy, and time period of the first transmitting port. Then, the first modulation type with an SNR greater than the required SNR is selected to generate the sensing signal, which can improve the quality of the sensing signal and thus improve the speed measurement performance.

[0029] In one possible implementation, the speed measurement range of the first modulation type includes the speed measurement requirements.

[0030] In this possible implementation, the first communication device can further narrow the range of the first modulation type based on the speed measurement range of the first modulation type, thereby further improving the quality of the sensed signal.

[0031] In one possible implementation, when the first modulation type is time division multiple access, Doppler multiple access, or binary code division multiple access, the speed measurement range is: V max ≤λ / 4N t Tc V min ≥-λ / 4N t T c ;

[0032] When the first modulation type is based on open-band Doppler multiple access, the velocity measurement range and the number of targets within the resolution cell are related. Related;

[0033] Among them, V max V represents the upper limit of the speed measurement range. min N represents the lower limit of the speed measurement range. t T represents the number of second transmit ports. c λ represents the time-domain period of each signal pulse, and λ represents the wavelength of the carrier wave.

[0034] In this possible implementation, different modulation types have different speed measurement ranges, which is beneficial for selecting the modulation type of the sensing signal with high accuracy.

[0035] In one possible implementation, At that time, V max ≤λ / 4T c V min ≥-λ / 4T c ,when At that time, V max ≤λ / 4(N t +N empty )T c V min ≥; N empty The number of empty bands.

[0036] A second aspect of this application provides a sensing method, which can be applied to a second communication device communicating with a first communication device, the method comprising:

[0037] Receive signal configuration parameters from the second transmitting port of the first communication device; wherein the signal configuration parameters are determined based on speed measurement requirements, carrier parameters, the number of first transmitting ports, and a first modulation type, the second transmitting port is included in the first transmitting port, and the first modulation type is at least one of the signal modulation types supported by the first transmitting port;

[0038] Based on the signal configuration parameters of the second transmission port, a sensing signal is transmitted through the second transmission port.

[0039] In this application, the second communication device can be a transmitter, which can be an access network device, a terminal device, or a chip in the access network device or the terminal device. There can be one or more transmitters, and when there are multiple transmitters, the signal configuration parameters of the different transmitters are different.

[0040] In one possible implementation, the first modulation type satisfies the signal-to-noise ratio requirement.

[0041] In one possible implementation, the signal configuration parameters include an index of the second transmission port and a first mapping relationship, which includes a mapping relationship between the index of the second transmission port and the configuration information of the sensing signal.

[0042] In one possible implementation, the configuration information of the sensing signal includes indication information of a first modulation type, retrieval information, and relational information; wherein, the indication information of the first modulation type is used to determine the first modulation type; the retrieval information is used to retrieve basic information of the sensing signal under the first modulation type, the basic information including indication information of the number of sensing signals, and at least one of the following: subcarrier spacing of frequency division multiple access, time interval of time division multiple access, signal coding strategy of code division multiple access, or phase offset of Doppler multiple access; the relational information is used to indicate the correspondence between sensing signals of different second transmission ports, and / or the sequential relationship between different sensing signals corresponding to the same second transmission port.

[0043] In one possible implementation, the above steps, namely: transmitting a sensing signal through the second transmitting port according to the signal configuration parameters of the second transmitting port, include: determining the configuration information of the sensing signal of the second transmitting port from the first mapping relationship according to the index of the second transmitting port; and transmitting the sensing signal through the second transmitting port according to the first modulation type, retrieval information, and relationship information.

[0044] In one possible implementation, the indication information of the first modulation type is represented by a first bit and / or a second bit among a plurality of bits, wherein the first bit and the second bit are respectively associated with different first modulation types.

[0045] In one possible implementation, the first modulation type satisfies the signal-to-noise ratio requirement by: the first signal-to-noise ratio corresponding to the first modulation type is greater than the signal-to-noise ratio requirement; wherein, the first signal-to-noise ratio is determined based on the transmit power of the first transmit port, the noise energy of the first transmit port, and the first time-domain period, and the first time-domain period is determined based on the velocity measurement requirement, the parameters of the carrier, and the number of the first transmit ports.

[0046] In one possible implementation, the speed measurement range of the first modulation type includes the speed measurement requirements.

[0047] In one possible implementation, when the first modulation type is time division multiple access, Doppler multiple access, or binary code division multiple access, the speed measurement range is: V max ≤λ / 4N t T c V min ≥-λ / 4N tT c ;

[0048] When the first modulation type is based on open-band Doppler multiple access, the velocity measurement range and the number of targets within the resolution cell are related. Related;

[0049] Among them, V max V represents the upper limit of the speed measurement range. min N represents the lower limit of the speed measurement range. t T represents the number of second transmit ports. c λ represents the time-domain period of each signal pulse, and λ represents the wavelength of the carrier wave.

[0050] In one possible implementation, At that time, V max ≤λ / 4T c V min ≥-λ / 4T c ,when At that time, V max ≤λ / 4(N t +N empty )T c V min ≥; N empty The number of empty bands.

[0051] The features and beneficial effects of the second aspect or any possible implementation of the second aspect can be understood by referring to the corresponding features and beneficial effects of the first aspect or any possible implementation of the first aspect, and will not be repeated here.

[0052] A third aspect of this application provides a communication device, which can be a first communication device, including: a transceiver module and a processing module;

[0053] The processing module is used to determine the signal configuration parameters of the second transmission port based on the speed measurement requirements, the parameters of the carrier, the number of the first transmission ports, and the first modulation type; wherein the second transmission port is included in the first transmission port, and the first modulation type is at least one of the signal modulation types supported by the first transmission port;

[0054] The transceiver module is used to send signal configuration parameters; among which, the signal configuration parameters are used to send sensing signals through the second transmitting port.

[0055] In one possible implementation, the first modulation type satisfies the signal-to-noise ratio requirement.

[0056] In one possible implementation, the processing module is used to determine a first time-domain period based on the speed measurement requirements, the parameters of the carrier, and the number of first transmission ports; and to determine the signal configuration parameters of the second transmission port based on the first modulation type, the first time-domain period, and the number of first transmission ports.

[0057] In one possible implementation, the signal configuration parameters include an index of the second transmission port and a first mapping relationship, which includes a mapping relationship between the index of the second transmission port and the configuration information of the sensing signal.

[0058] In one possible implementation, the transceiver module is also used to send the index of the receiving port and a first mapping relationship, which is used for the receiving port to process the echo signal of the sensed signal.

[0059] In one possible implementation, the configuration information of the sensing signal includes indication information of a first modulation type, retrieval information, and relational information; wherein, the indication information of the first modulation type is used to determine the first modulation type; the retrieval information is used to retrieve basic information of the sensing signal under the first modulation type, the basic information including indication information of the number of sensing signals, and at least one of the following: subcarrier spacing of frequency division multiple access, time interval of time division multiple access, signal coding strategy of code division multiple access, or phase offset of Doppler multiple access; the relational information is used to indicate the correspondence between sensing signals of different second transmission ports, and / or the sequential relationship between different sensing signals corresponding to the same second transmission port.

[0060] In one possible implementation, the indication information of the first modulation type is represented by a first bit and / or a second bit among a plurality of bits, wherein the first bit and the second bit are respectively associated with different first modulation types.

[0061] In one possible implementation, the first modulation type satisfies the signal-to-noise ratio requirement by: the first signal-to-noise ratio corresponding to the first modulation type is greater than the signal-to-noise ratio requirement; wherein, the first signal-to-noise ratio is determined based on the transmit power of the first transmit port, the noise energy of the first transmit port, and the first time-domain period, and the first time-domain period is determined based on the velocity measurement requirement, the parameters of the carrier, and the number of the first transmit ports.

[0062] In one possible implementation, the speed measurement range of the first modulation type includes the speed measurement requirements.

[0063] In one possible implementation, when the first modulation type is time division multiple access, Doppler multiple access, or binary code division multiple access, the speed measurement range is: V max ≤λ / 4N t T c V min ≥-λ / 4N t Tc ;

[0064] When the first modulation type is based on open-band Doppler multiple access, the velocity measurement range and the number of targets within the resolution cell are related. Related;

[0065] Among them, V max V represents the upper limit of the speed measurement range. min N represents the lower limit of the speed measurement range. t T represents the number of second transmit ports. c λ represents the time-domain period of each signal pulse, and λ represents the wavelength of the carrier wave.

[0066] In one possible implementation, At that time, V max ≤λ / 4T c V min ≥-λ / 4T c ,when At that time, V max ≤λ / 4(N t +N empty )T c V min ≥; N empty The number of empty bands.

[0067] A fourth aspect of this application provides a communication device, which can be a second communication device that communicates with a first communication device, the communication device comprising: a transceiver module and a processing module;

[0068] The transceiver module is used to receive signal configuration parameters from the second transmitting port of the first communication device; wherein the signal configuration parameters are determined based on speed measurement requirements, carrier parameters, the number of first transmitting ports, and a first modulation type, the second transmitting port is included in the first transmitting port, and the first modulation type is at least one of the signal modulation types supported by the first transmitting port;

[0069] The processing module is used to generate the sensing signal of the second transmitting port according to the signal configuration parameters of the second transmitting port;

[0070] The transceiver module is also used to send sensing signals.

[0071] In one possible implementation, the first modulation type satisfies the signal-to-noise ratio requirement.

[0072] In one possible implementation, the signal configuration parameters include an index of the second transmission port and a first mapping relationship, which includes a mapping relationship between the index of the second transmission port and the configuration information of the sensing signal.

[0073] In one possible implementation, the configuration information of the sensing signal includes indication information of a first modulation type, retrieval information, and relational information; wherein, the indication information of the first modulation type is used to determine the first modulation type; the retrieval information is used to retrieve basic information of the sensing signal under the first modulation type, the basic information including indication information of the number of sensing signals, and at least one of the following: subcarrier spacing of frequency division multiple access, time interval of time division multiple access, signal coding strategy of code division multiple access, or phase offset of Doppler multiple access; the relational information is used to indicate the correspondence between sensing signals of different second transmission ports, and / or the sequential relationship between different sensing signals corresponding to the same second transmission port.

[0074] In one possible implementation, the processing module is configured to determine the configuration information of the sensing signal of the second transmitting port from the first mapping relationship based on the index of the second transmitting port; and generate the sensing signal corresponding to the second transmitting port based on the first modulation type, retrieval information and relationship information.

[0075] In one possible implementation, the indication information of the first modulation type is represented by a first bit and / or a second bit among a plurality of bits, wherein the first bit and the second bit are respectively associated with different first modulation types.

[0076] In one possible implementation, the first modulation type satisfies the signal-to-noise ratio requirement by: the first signal-to-noise ratio corresponding to the first modulation type is greater than the signal-to-noise ratio requirement; wherein, the first signal-to-noise ratio is determined based on the transmit power of the first transmit port, the noise energy of the first transmit port, and the first time-domain period, and the first time-domain period is determined based on the velocity measurement requirement, the parameters of the carrier, and the number of the first transmit ports.

[0077] In one possible implementation, the speed measurement range of the first modulation type includes the speed measurement requirements.

[0078] In one possible implementation, when the first modulation type is time division multiple access, Doppler multiple access, or binary code division multiple access, the speed measurement range is: V max ≤λ / 4N t T c V min ≥-λ / 4N t T c ;

[0079] When the first modulation type is based on open-band Doppler multiple access, the velocity measurement range and the number of targets within the resolution cell are related. Related;

[0080] Among them, V max V represents the upper limit of the speed measurement range. min N represents the lower limit of the speed measurement range. tT represents the number of second transmit ports. c λ represents the time-domain period of each signal pulse, and λ represents the wavelength of the carrier wave.

[0081] In one possible implementation, At that time, V max ≤λ / 4T c V min ≥-λ / 4T c ,when At that time, V max ≤λ / 4(N t +N empty )T c V min ≥; N empty The number of empty bands.

[0082] A fifth aspect of this application provides a communication device including a processor. The processor is configured to call and run a computer program stored in a memory, causing the processor to implement as described in the first aspect or any of the implementations of the first aspect.

[0083] Optionally, the communication device also includes a transceiver; the processor is also used to control the transceiver to send and receive signals.

[0084] Optionally, the communication device includes a memory in which a computer program is stored.

[0085] The communication device mentioned in the fifth aspect above can be a device or a chip (system) in a device.

[0086] A sixth aspect of this application provides a communication device including a processor. The processor is configured to invoke and execute a computer program stored in a memory, such that the processor implements as described in the second aspect or any of the implementations in the second aspect.

[0087] Optionally, the communication device also includes a transceiver; the processor is also used to control the transceiver to send and receive signals.

[0088] Optionally, the communication device includes a memory in which a computer program is stored.

[0089] The communication device described in the sixth aspect above can be a device or a chip (system) in a device.

[0090] The seventh aspect of this application provides a communication device, which may be a first communication device or a module or unit (e.g., a chip, a chip system, or a circuit) in the first communication device that corresponds to the execution of the methods / operations / steps / actions described in the first aspect.

[0091] The eighth aspect of this application provides a communication device, which may be a second communication device or a module or unit (e.g., a chip, a chip system, or a circuit) in the second communication device that corresponds to the execution of the methods / operations / steps / actions described in the second aspect.

[0092] The ninth aspect of this application provides a computer-readable storage medium including computer instructions that, when executed on a computer, cause the computer to perform an implementation as described in the first aspect or any of the first aspects.

[0093] The tenth aspect of this application provides a computer-readable storage medium including computer instructions that, when executed on a computer, cause the computer to perform an implementation as described in the second aspect or any of the second aspects.

[0094] The eleventh aspect of this application provides a computer program product including instructions that, when run on a computer, cause the computer to perform an implementation as described in the first aspect or any of the first aspects.

[0095] The twelfth aspect of this application provides a computer program product including instructions that, when run on a computer, cause the computer to perform an implementation as described in the second aspect or any of the second aspects.

[0096] The thirteenth aspect of this application provides a chip device including a processor for calling a program stored in a memory, such that the processor executes the first aspect or any implementation thereof.

[0097] Optionally, the memory may be located inside or outside the chip device.

[0098] The fourteenth aspect of this application provides a chip device including a processor for calling a program stored in a memory, such that the processor executes the second aspect or any implementation thereof described above.

[0099] Optionally, the memory may be located inside or outside the chip device.

[0100] The fifteenth aspect of this application provides a communication system, which includes a first communication device and a second communication device. The first communication device is used to execute the first aspect or any one of the implementations of the first aspect, and the second communication device is used to execute the second aspect or any one of the implementations of the second aspect.

[0101] The technical effects of the third aspect or any possible implementation of the third aspect, the fifth aspect, the seventh aspect, the ninth aspect, the eleventh aspect, the thirteenth aspect or the fifteenth aspect can be found in the first aspect or the technical effects of different possible implementations of the first aspect, and will not be repeated here.

[0102] The technical effects of the fourth aspect or any possible implementation of the fourth aspect, the sixth aspect, the eighth aspect, the tenth aspect, the twelfth aspect or the fourteenth aspect can be found in the technical effects of the second aspect or different possible implementations of the second aspect, and will not be repeated here. Attached Figure Description

[0103] Figure 1A This is an example schematic diagram of a MIMO scenario provided in an embodiment of this application;

[0104] Figure 1B This is an example schematic diagram of time division multiple access provided in an embodiment of this application;

[0105] Figure 1C This is an example schematic diagram of frequency division multiple access provided in an embodiment of this application;

[0106] Figure 1D This is an example schematic diagram of code division multiple access provided in an embodiment of this application;

[0107] Figure 1E This is an example schematic diagram of Doppler addressing provided in an embodiment of this application;

[0108] Figure 1F This is an example schematic diagram of Doppler addressing based on empty band provided in an embodiment of this application;

[0109] Figure 2A This is an example schematic diagram of a sensing scenario provided in an embodiment of this application;

[0110] Figure 2B This is another example schematic diagram of the perception scenario provided in the embodiments of this application;

[0111] Figure 3 This is a schematic diagram of an embodiment of the sensing method provided in this application;

[0112] Figure 4 This is a schematic diagram of another embodiment of the sensing method provided in this application;

[0113] Figure 5 This is a schematic diagram of another embodiment of the sensing method provided in this application;

[0114] Figure 6 This is a schematic diagram of another embodiment of the sensing method provided in this application;

[0115] Figure 7 This is a schematic diagram of another embodiment of the sensing method provided in this application;

[0116] Figure 8 This is a schematic diagram of another embodiment of the sensing method provided in this application;

[0117] Figure 9 This is a schematic diagram of the structure of the communication device provided in an embodiment of this application;

[0118] Figure 10 This is another structural schematic diagram of the communication device provided in the embodiments of this application;

[0119] Figure 11 This is another structural schematic diagram of the communication device provided in the embodiments of this application. Detailed Implementation

[0120] The embodiments of this application are described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. As those skilled in the art will understand, with the development of technology and the emergence of new scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0121] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0122] This application provides a sensing method to improve the speed measurement performance of a moving target. This application also provides corresponding devices, computer-readable storage media, and computer program products. These will be described in detail below.

[0123] The technical solutions of this application can be applied to various communication systems, such as: satellite communication, 5th generation (5G) systems or new radio (NR), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, universal mobile telecommunication systems (UMTS), mobile communication systems after 5G networks (e.g., 6G mobile communication systems), vehicle-to-everything (V2X) communication systems, etc.

[0124] In addition to having stronger communication capabilities, the aforementioned communication system also possesses sensing capabilities, making it a communication system with integrated sensing and communication (ISAC). An integrated sensing and communication system means that the communication system can communicate through communication signals (which can also be described as communication channels) and perform sensing and measurement through sensing signals (which can also be described as sensing channels).

[0125] In this application, "perception" refers to using the transmission, reflection, and scattering of radio waves (radio frequency signals) to sense the surrounding environment and detect targets. For example, in vehicle-to-everything (V2X) systems, sensing signals are used to detect other vehicles or objects around vehicles; in imaging systems, sensing signals are used to image target points (buildings, vehicles, and other tangible objects) in the environment. Of course, the communication system in this application can also be an industrial automation system or other communication systems that require sensing.

[0126] The communication system described in this application can be a communication system based on orthogonal frequency division multiplexing (OFDM) and / or time division multiplexing (TDM), or a communication system or communication and sensing system based on frequency modulated continuous waveform (FMCW).

[0127] For ease of understanding, the technical terms involved in the embodiments of this application are briefly introduced below:

[0128] 1. Multiple-Input Multiple-Output (MIMO): This is a wireless communication technology that uses multiple antennas to transmit and receive signals. This technology has been introduced into the radar field for sensing. MIMO radar systems can achieve better spatial resolution using fewer transmit and receive antennas. The transmit antennas are also called transmit ports, and the receive antennas are also called receive ports. MIMO communication systems typically include network devices and terminal devices; there can be one or more network devices and one or more terminal devices. An example of the structure of a MIMO communication system can be found in [reference needed]. Figure 1A To understand, such as Figure 1A As shown, a MIMO communication system includes multiple network devices and multiple terminal devices, such as... Figure 1A The network devices are 1 and 2, and the terminal devices are 1, 2, and 3. Network device 1 and 2 can communicate in MIMO mode, and network device 1 can also communicate with terminal devices 1, 2, and 3 in MIMO mode. MIMO communication involves multiple transmitting antennas sending signals and multiple receiving antennas receiving signals. Under MIMO sensing, the signals transmitted by the transmitting antennas are typically orthogonal signals, allowing for the separation of different transmission channels during signal processing. Furthermore, when the number of transmitting antennas is M and the number of receiving antennas is N, a signal processing gain of M x N times can be obtained through processing at the receiving end.

[0129] 2. Orthogonal signals: These are a special type of signal whose autocorrelation function has the form of an ideal impulse function, and whose cross-correlation function is zero. However, such ideal signals do not exist; only quasi-orthogonal signals can be designed, aiming to minimize the autocorrelation sidelobes and cross-correlation of the signal. This application no longer distinguishes between quasi-orthogonal and orthogonal signals, and uses the term "orthogonal signal" uniformly. Common methods for implementing orthogonal signals include: Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Code Division Multiple Access (CDMA), Doppler Diversity Multiple Access (DDMA), and empty-band DDMA. Therefore, TDMA, FDMA, CDMA, DDMA, and empty-band DDMA can also be considered types of orthogonal signals. Different types of orthogonal signals have certain limitations and applicable scenarios; in practical applications, it is necessary to select the appropriate orthogonal signal based on the specific requirements.

[0130] 3. TDMA: This is the most intuitive way to achieve signal orthogonality, where the transmitting antennas alternately transmit their own signals, with no time overlap between any two transmissions. For example... Figure 1B As shown, signals 1 and 2 are transmitted alternately at different times within the same frequency band (freq). The period between signals 1 and 2 is one time-domain period Tc. Signals 1 and 2 can be a block, which can be a resource block (RB). A frame can include multiple blocks. TDMA can achieve relatively ideal orthogonality, and the separation of transmission channels is simple and easy to implement. However, TDMA does not fully utilize transmission resources, has no signal gain, and therefore has a low signal-to-noise ratio (SNR).

[0131] 4. FDMA: This refers to transmitting different signals at different frequencies simultaneously. For example... Figure 1C In this method, signals 1, 2, 3, and 4 are transmitted simultaneously on different frequency bands using FDMA, which can make better use of transmission resources and achieve a higher SNR.

[0132] 5. CDMA: This refers to the use of different encoding strategies to encode signals transmitted by different antennas, so that these signals can be separated and decoded at the receiver. For example... Figure 1D As shown, signal 1 transmitted by transmit antenna TX1 is encoded using coding strategy 1 (code1), and signal 2 transmitted by transmit antenna TX2 is encoded using coding strategy 2 (code2). CDMA can achieve generally low orthogonal performance, but it can utilize all transmission resources and has a high SNR.

[0133] 6. DDMA: DDMA has several forms. It can achieve separation by setting differences in transmission frequency or phase. Figure 1E This paper demonstrates a method for implementing phase setting differences. Signals A, B, C, and D transmitted by four TX antennas are initially in phase 0, but each antenna has a specific phase offset between its preceding and following chirps, allowing the signals from different antennas to be separated in the Doppler domain. Similarly, DDMA utilizes all transmission resources and has a high SNR, but requires high precision in phase modulation.

[0134] 7. Empty-band based DDMA: While inheriting the advantages of DDMA, empty-band based DDMA can further extend the maximum unambiguous speed measurement range, provided the requirements are met, such as... Figure 1F As shown, empty bands are inserted between multiple transmitting antennas, such as... Figure 1E B and C in the equation represent empty bands. The velocity can be de-ambigued by determining the location of the empty bands, but this requires high precision in phase modulation.

[0135] 8. Sensing Node: A communication device used for sensing, which may include a transmitter (Tx), a receiver (Rx), or a transceiver integrated communication device.

[0136] 9. Transmitter: A communication device that transmits communication signals and / or sensing signals (SS), also known as a transmitting node or transmitting device.

[0137] 10. Receiver: A communication device that receives the echo signal of communication signals and / or sensing signals; it may also be called a receiving node or receiving device.

[0138] 11. Sensing Signal: This refers to the radio frequency signal used to sense the environment or target. SS can be a sensing reference signal (SERS), a positioning reference signal (PRS), or a sounding reference signal (SRS), etc. Sensing signals can be transmitted in the form of beams.

[0139] 12. Echo signal (ES): refers to the signal after the sensing signal has been transmitted, reflected or scattered. The sensing result can be determined by measuring the echo signal. The echo signal can be received by beamforming.

[0140] 13. Perceived target: refers to target objects in the environment, such as drones, cars, mobile phones, buildings, etc.

[0141] The sensing method provided in this application can be applied to either dual-base joint sensing scenarios or single-base joint sensing scenarios. A dual-base joint sensing scenario refers to a joint sensing scenario where the transmitter and receiver are separate, meaning the transmitter of the sensing signal and the receiver of the echo signal are not the same communication device. A single-base joint sensing scenario refers to a joint sensing scenario where the transmitter and receiver are integrated, meaning the transmitter of the sensing signal and the receiver of the echo signal belong to the same communication device. A single-base joint sensing scenario can also be called a self-sensing scenario.

[0142] For examples of dual-base joint sensing scenarios, please refer to [link / reference]. Figure 2A To understand. For example Figure 2AAs shown, this dual-base joint sensing scenario includes two transmitters, two receivers, a sensing target, and a central node. The two transmitters are transmitter Tx201 and transmitter Tx202; the two receivers are receiver Rx203 and receiver Rx204; the sensing target can be in motion, such as... Figure 2A The target of perception is 1, 2, and 3. Of course, the target of perception can also be a stationary object, such as a building.

[0143] The central node 205 can determine signal configuration parameter 1 and signal configuration parameter 2, and send signal configuration parameter 1 to the transmitting end Tx201 and signal configuration parameter 2 to the transmitting end Tx202. Of course, the central node 205 can also determine reception parameter 1 and reception parameter 2, and send reception parameter 1 to the receiving end Rx203 and reception parameter 2 to the receiving end Rx204.

[0144] The central node 205 is a node that configures sensing parameters for the transmitting end or receiving end of the sensing signal, and / or summarizes the sensing results. This central node can be an access network device or a chip within the access network device; of course, it can also be other types of devices.

[0145] Transmitter Tx201 transmits sensing signal SS1 according to signal configuration parameter 1. The echo signal ES1 generated by SS1 after passing through sensing target 1 is received by receiver Rx203. Transmitter Tx201 transmits SS2 according to signal configuration parameter 1. The echo signal ES2 generated by SS2 after passing through sensing target 2 is received by receiver Rx203.

[0146] The transmitter Tx202 transmits SS3 according to signal configuration parameter 2. SS3 is received by the receiver Rx204 after passing through the sensing target 2 and generating ES3. The transmitter Tx202 transmits SS4 according to signal configuration parameter 2. SS4 is received by the receiver Rx204 after passing through the sensing target 3 and generating ES4.

[0147] It should be noted that SS1 and SS2, or SS3 and SS4, can be sensing signals emitted from the same transmitting beam. However, sensing signals within the range of this transmitting beam will generate echo signals in different directions when encountering sensing targets at different locations, such as ES1, ES2, ES3, and ES4. These echo signals in different directions can be received by different receiving terminals. Of course, SS1 and SS2 can also be sensing signals from different beams of the transmitting terminal Tx201, and SS3 and SS4 can also be sensing signals from different beams of the transmitting terminal Tx202.

[0148] In a dual-base joint sensing scenario, the echo signals generated by sensing signals transmitted from the same transmitter can be received by different receivers, such as ES2 being received by receiver Rx203 and ES3 being received by receiver Rx204. Echo signals generated by sensing signals transmitted from different transmitters can also be received by the same receiver, such as ES2 and ES3 being received by receiver Rx203. Of course, the echo signals generated by sensing signals transmitted from the same transmitter can also be received by only one receiver. This application does not limit the correspondence between transmitters and receivers; it is related to the number of transmitters or receivers within a certain area. In either case, the receiver can determine the sensing result based on its received echo signals. Alternatively, the receiver can send relevant data from the received echo signals to other communication devices for them to determine the sensing result.

[0149] It should be noted that the above process may also be possible without the participation of the central node 205, with the receiving end Rx203 or Rx204 performing the function of the central node determining and sending signal configuration parameter 1 or signal configuration parameter 2. Alternatively, the transmitting end Tx201 can determine signal configuration parameter 1, and the transmitting end Tx202 can determine signal configuration parameter 2. Then, the transmitting end Tx201 transmits sensing signals SS1 and SS2 according to signal configuration parameter 1, and the transmitting end Tx202 transmits sensing signals SS3 and SS4 according to signal configuration parameter 2.

[0150] For single-base joint sensing scenarios, please refer to Figure 2B To understand. For example Figure 2B As shown, this single-base joint sensing scenario can include two measurement nodes, a central node, and a sensing target. The two measurement nodes are measurement node 211 and measurement node 212, which can both transmit sensing signals and receive echo signals.

[0151] When a measurement node senses a target in a measurement environment, it can transmit one or more beams. The sensing signals SS on these beams can detect different locations of the target. The measurement node then receives the corresponding echo signals ES, and can determine the sensing result based on the ES. Alternatively, the measurement node can also send relevant data from the received echo signals to other communication devices, which can then determine the sensing result.

[0152] like Figure 2B As shown, the central node 205 determines signal configuration parameter 1 and reception parameter 1 for the measurement node 211, and sends the signal configuration parameter 1 and reception parameter 1 to the measurement node 211. The measurement node 211 generates and transmits SS1 and SS2 according to the signal configuration parameter 1, and then receives ES1 and ES2; the measurement node 112 generates and transmits SS3 and SS4 according to the signal configuration parameter 2, and receives ES3 and ES4.

[0153] It should be noted that the above Figure 2A or Figure 2B In this context, SS1 and SS2 can be sensing signals transmitted through different transmission ports of the transmitter Tx201 or the measurement node 211, or sensing signals transmitted through the same transmission port at different times. Similarly, SS3 and SS4 can be sensing signals transmitted through different transmission ports of the transmitter Tx202 or the measurement node 212, or sensing signals transmitted through the same transmission port at different times.

[0154] The above Figure 2A and Figure 2B In the described scenario, there are multiple receivers, transmitters, or measurement nodes. In reality, there can be only one receiver, transmitter, or measurement node. The measurement of different positions of the sensing target can be achieved by adjusting the angle of the receiver, transmitter, or measurement node. Therefore, this application does not limit the number of receivers, transmitters, or measurement nodes, and there can be one or more.

[0155] The above Figure 2A and Figure 2B In the described scenario, the receiving end, transmitting end, or measuring node can all be referred to as a sensing node. The receiving end, transmitting end, and measuring node can all be terminal devices or access network devices, and the central node can also be a terminal device or access network device. This application does not limit the scope of these claims. Figure 2A and Figure 2B The specific forms of the receiver, transmitter, measurement node, and central node are shown.

[0156] The terminal equipment and access network equipment of this application are described below.

[0157] The terminal device can be a wireless terminal device capable of receiving scheduling and instruction information from access network devices. The wireless terminal device can be a device that provides voice and / or data connectivity to the user, a handheld device with wireless connectivity, another processing device connected to a wireless modem, or a device with sensing capabilities.

[0158] Terminal equipment, also known as user equipment (UE), mobile station (MS), or mobile terminal (MT), is a device that includes wireless communication and / or sensing functions (providing voice or data connectivity to the user). Examples include handheld devices with wireless connectivity or in-vehicle devices. Currently, some examples of terminal equipment include: mobile phones, tablets, laptops, PDAs, drones, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in vehicle-to-everything (V2X) communication, wireless terminals in self-driving cars, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, and wireless terminals in smart homes. For example, wireless terminals in the Internet of Vehicles (IoV) can be in-vehicle equipment, vehicle-mounted equipment, in-vehicle modules, and vehicles themselves. Wireless terminals in industrial control can be cameras, robots, etc. Wireless terminals in smart homes can be televisions, air conditioners, robot vacuums, speakers, set-top boxes, etc.

[0159] Access network equipment is a device deployed in a radio access network (RAN) that provides wireless communication and / or sensing functions to terminal devices. For example, an access network device can be a RAN node that connects terminal devices to a wireless network. Access network equipment can also be a device deployed in a RAN that can communicate with other access network devices and provide wireless communication and / or sensing functions between access network devices.

[0160] Access network equipment includes, but is not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home-evolved Node B, or home Node B, HNB), baseband unit (BBU), access point (AP), wireless relay node, wireless backhaul node, transmission point (TP), or transmission and reception point (TRP) in a wireless fidelity (WIFI) system, and can also be access network equipment in a 5G mobile communication system. For example, a next-generation NodeB (gNB), transmission reception point (TRP), or transmission point (TP) in a new radio (NR) system; or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G mobile communication system; or, access network equipment can also be network nodes constituting a gNB or transmission point. For example, a baseband unit (BBU) or a distributed unit (DU), etc.

[0161] In some deployments, a gNB may include a centralized unit (CU) and a dedicated unit (DU). The gNB may also include an active antenna unit (AAU). The CU implements some of the gNB's functions, and the DU implements others. For example, the CU handles non-real-time protocols and services, implementing radio resource control (RRC) and packet data convergence protocol (PDCP) layer functions. The DU handles physical layer protocols and real-time services, implementing radio link control (RLC), media access control (MAC), and physical (PHY) layer functions. The AAU implements some physical layer processing functions, radio frequency processing, and active antenna-related functions. Information from the RRC layer ultimately becomes information from the PHY layer, or is derived from PHY layer information. Therefore, in this architecture, higher-layer signaling (such as RRC layer signaling) can be considered to be sent by the DU, or by both the DU and AAU. It is understood that access network equipment can be one or more of the following: CU nodes, DU nodes, and AAU nodes. In addition, the CU can be classified as an access network device in the radio access network (RAN) or as an access network device in the core network (CN), and this application does not limit this.

[0162] The communication system and application scenarios have been introduced above. The sensing method provided in the embodiments of this application will be described below in conjunction with the interaction process of the first communication device and the second communication device.

[0163] In this application, the first communication device can be the central node in the aforementioned sensing scenario. The second communication device can be a transmitter of sensing signals, or a transceiver integrated measurement node, etc. The second communication device can be an access network device, a terminal device, or a chip in the access network device or a chip in the terminal device. There can be one or more second communication devices.

[0164] like Figure 3 As shown, the sensing method provided in this application includes:

[0165] S301. The first communication device determines the signal configuration parameters of the second transmission port based on the speed measurement requirements, the parameters of the carrier wave, the number of the first transmission ports, and the first modulation type.

[0166] The second transmission port is included in the first transmission port, and the first modulation type is at least one of the signal modulation types supported by the first transmission port.

[0167] In this application, the speed measurement requirement may include the maximum and minimum speeds that need to be sensed; or, scene indication information, which is used to indicate the speed range that needs to be sensed.

[0168] In this application, the parameters of the carrier may include the carrier wavelength, frequency, or pulse repetition frequency (PRF).

[0169] In this application, the modulation type can be a type of quadrature signal, such as TDMA, FDMA, CDMA, DDMA, and empty-band-based DDMA as described above.

[0170] In this application, "the second transmission port is included in the first transmission port" means that the second transmission port is part or all of the first transmission port.

[0171] In this application, the signal configuration parameters refer to the parameters required to generate the sensing signal of the second transmitting port, such as the index of the second transmitting port and the first modulation type.

[0172] S302. The first communication device sends signal configuration parameters to the second communication device. Correspondingly, the second communication device receives the signal configuration parameters.

[0173] S303. The second communication device generates a sensing signal corresponding to the second transmission port according to the signal configuration parameters.

[0174] S304. The second communication device transmits a sensing signal through the second transmission port.

[0175] The solution provided in this application embodiment allows the first communication device to determine the signal configuration parameters of the second transmission port based on the speed measurement requirement, the carrier parameters, the number of the first transmission ports, and the first modulation type. In this way, the sensing signal transmitted based on the signal configuration parameters can better measure the moving sensing target within the speed measurement requirement range, thereby improving the speed measurement performance and enhancing the sensing quality.

[0176] Optionally, S301 may include S301a and S301b.

[0177] S301a. The first communication device determines the first time domain period based on the speed measurement requirements, the parameters of the carrier wave, and the number of the first transmission ports.

[0178] In this application, the process of determining the first time-domain period can be implemented in the following different ways:

[0179] Method 1:

[0180] In this application, the first communication device can be based on the relation T. c =λ / (N) t ΔV) determines the first time-domain period; where λ represents the wavelength of the carrier wave, and N t ΔV represents the number of the first transmitting ports, and ΔV represents the speed measurement range.

[0181] If the speed measurement requirement is the maximum speed V that needs to be sensed... max and minimum speed V min Then ΔV passes through V max and V min Determined, that is: ΔV = (V max -V min ).

[0182] If the speed measurement requirement is given through scene indication information, then ΔV can be determined using this information. Scene indication information can indicate stationary scenes, low-speed scenes, high-speed scenes, etc. For example, a stationary scene is one where stationary targets such as buildings are being sensed; a low-speed scene is one where pedestrians / bicycles are being sensed at relatively low speeds; and a high-speed scene is one where cars / trains / drones are being sensed at relatively high speeds. Different sensing scenes typically have corresponding speed measurement ranges, thus allowing the determination of ΔV for the corresponding scene.

[0183] Method 2:

[0184] In this application, the first communication device can determine the first time domain period by looking up a table, as shown in Table 1:

[0185] Table 1: Time Domain Period and Corresponding Maximum Velocity Measurement Range

[0186]

[0187]

[0188] In Table 1, N t Indicates the number of the first transmit ports, (V max -V minThe value () represents the speed measurement range, which can be determined according to the speed measurement requirements, and f represents the carrier frequency. Different frequencies correspond to different maximum speed measurement ranges for different time-domain periods. For example, for f = 3.5 GHz and Tc = 0.001 s, the maximum speed measurement range is 42.8 / 21.4, where 42.8 is the speed measurement range for one-way reception and 24.1 is the speed measurement range for round-trip transmission. Similarly, if f is known, after determining the maximum speed measurement range, the corresponding time-domain period can be determined using Table 1. For example, if f = 3.5 GHz and the determined maximum speed measurement range is 42.8 / 21.4, then the first time-domain period can be determined to be 0.001 s.

[0189] Method 3:

[0190] In this application, the first communication device can be represented by the relation PRF = 1 / (N) T *T c Determine the first time-domain period T c Where PRF represents the pulse repetition frequency, N t This indicates the number of the first transmit ports. Thus, given the PRF and N... t Then, it can be done by PRF = 1 / (N) T *T c Determine T c .

[0191] S301b. The first communication device determines the signal configuration parameters of the second transmission port based on the first modulation type, the first time domain period, and the number of the first transmission ports.

[0192] In this application, the first communication device can also determine a first modulation type that meets the signal-to-noise ratio requirement based on the signal-to-noise ratio requirement and the signal modulation type supported by the first transmitting port. This narrows the range of modulation types for the sensed signal, thereby determining a more suitable modulation type for the sensed signal. This not only saves sensing resources but also improves speed measurement performance.

[0193] The process of determining the first modulation type that meets the signal-to-noise ratio requirement can be as follows: first calculate the signal-to-noise ratio of each signal modulation type supported by the first transmit port, and then compare it with the signal-to-noise ratio threshold given by the signal-to-noise ratio requirement.

[0194] The process of calculating the signal-to-noise ratio for various signal modulation types can be as follows:

[0195] According to the relation Calculate the signal-to-noise ratio (SNR) for various signal modulation types. Where P... port T represents the transmit power of the first transmit port. c E represents the first time-domain period. noise This represents the noise energy at the first transmit port; via Pport T c and E noise According to this relationship, SNR0 can be calculated.

[0196] If the signal modulation type is TDMA, then SNR all =SNR0, that is: the signal-to-noise ratio (SNR) corresponding to TDMA. all It is equal to SNR0.

[0197] If the signal modulation type is CDMA, FDMA, DDMA, or DDMA based on empty band, then the SNR all =SNR0 + 10 * logN t That is, the signal-to-noise ratio (SNR) corresponding to CDMA, FDMA, DDMA, or DDMA based on empty band. all Based on SNR0, add 10*logN. t N t This represents the number of the first transmission ports.

[0198] If the signal modulation type is a mixture of TDMA and CDMA, FDMA, DDMA, or DDMA based on empty band, then the SNR all =SNR0 + 10 * log n t That is, the signal-to-noise ratio (SNR) of TDMA mixed with CDMA, FDMA, DDMA, or DDMA based on empty band. all Based on SNR0, add 10*log n t , where n t This represents the number of transmission ports that can transmit signals simultaneously.

[0199] Determine SNR all Then, the SNR can be determined based on the required signal-to-noise ratio (SNR). all The modulation type with an SNR ≥ 1 is the first modulation type.

[0200] In addition, in the embodiments of this application, the range of the first modulation type can be reduced based on the speed measurement range of the first modulation type or further reduced based on the signal-to-noise ratio requirement, so as to further improve the quality of the sensing signal.

[0201] One approach to narrowing the range of the first modulation type by using the speed measurement range is to determine whether the speed measurement requirement falls within the speed measurement range of the first modulation type.

[0202] When the first modulation type is binary code division multiple access in TDMA, DDMA, or CDMA, the speed measurement range is: V max ≤λ / 4N t T c V min≥-λ / 4N t T c ;

[0203] When the first modulation type is based on open-band Doppler multiple access, the velocity measurement range and the number of targets within the resolution cell are related. Related;

[0204] Among them, V max V represents the upper limit of the speed measurement range. min N represents the lower limit of the speed measurement range. t T represents the number of second transmit ports. c λ represents the time-domain period of each signal pulse, and λ represents the wavelength of the carrier wave.

[0205] in, At that time, V max ≤λ / 4T c V min ≥-λ / 4T c ,when At that time, V max ≤λ / 4(N t +N empty )T c V min ≥; N empty The number of empty bands.

[0206] In this embodiment, different modulation types have different speed measurement ranges, which is beneficial for accurately selecting the first modulation type of the sensing signal.

[0207] In this embodiment, the first communication device can determine a second transmission port for transmitting sensing signals from the first transmission ports. For example, if there are 16 first transmission ports, 8 can be selected for transmitting sensing signals; these 8 transmission ports are then the second transmission ports. Of course, this is just an example; the first communication device can select fewer than 8 or more transmission ports as second transmission ports based on the requirements for transmitting sensing signals. Alternatively, all 16 first transmission ports can be designated as second transmission ports.

[0208] Each first transmit port has an index, which can be represented in binary form. For example, if there are 16 first transmit ports, their indices can be: 0000, 0001, 0010, 0011, 0100, 0101, 0110, 0111, 1000, 1001, 1010, 1011, 1100, 1101, 1110, 1111.

[0209] Of course, the indices of these 16 first transmission ports can also be represented in other forms, such as 0, 1, 2, ... 15; or other forms. This application does not limit this.

[0210] If the first communication device selects the first four transmission ports from the 16 first transmission ports as the second transmission ports, then the indices of these four second transmission ports can be 0000, 0001, 0010 and 0011.

[0211] In this embodiment of the application, corresponding signal configuration parameters can be pre-configured for different time-domain periods of various modulation types, as shown in Tables 2 to 6, which illustrate the signal configuration parameter tables for TDMA, FDMA, CDMA, DDMA, and DDMA based on empty band.

[0212] Table 2: TDMA Signal Configuration Parameters Table

[0213] row index Time interval (µs) <![CDATA[Time domain period T c (s)]]> <![CDATA[Number of sensing signals (2 n )]]> H01 Time interval 1 (e.g., 80us) Time domain period 1 (e.g., 0.001s) n＝1～10 H02 Time interval 2 (e.g., 40us) Time domain period 2 (e.g., 0.0005s) n＝1～10 H03 Time interval 3 (e.g., 20us) Time domain period 3 (e.g., 0.00025s) n＝1～10

[0214] In Table 2, T c When the value is 0.001, the corresponding time interval is 80µs. The value of n can be determined by the number of second transmission ports. For example, if the number of second transmission ports is 4, then n = 2; if the number of second transmission ports is 8, then n = 3. Here, n represents the quantity of sensed signals. Of course, if the number of second transmission ports is not 2... n The quantity of the sensed signal can then be indicated in other ways.

[0215] After determining the first time-domain period and the first modulation type as TDMA, the first communication device can determine the corresponding signal configuration parameters through Table 2. For example, if the first time-domain period = 0.001s, the time interval for transmitting the sensing signal can be determined to be 80us, that is, the second transmission port transmits a sensing signal every 80us.

[0216] Table 3: FDMA Signal Configuration Parameters Table

[0217] row index Subcarrier spacing (kHz) <![CDATA[Time domain period T c (s)]]> <![CDATA[Number of sensing signals (2 n )]]> H01 Subcarrier spacing 1 (e.g., 15kHz) Time domain period 1 (e.g., 0.001s) n＝1～10 H02 Subcarrier spacing 2 (e.g., 30kHz) Time domain period 2 (e.g., 0.0005s) n＝1～10 H03 Subcarrier spacing 3 (e.g., 60kHz) Time domain period 3 (e.g., 0.00025s) n＝1～10

[0218] In Table 3, T c When n = 0.001, the corresponding subcarrier spacing is 15kHz. The value of n can be understood by referring to the introduction in Table 2.

[0219] After determining the first time-domain period and the first modulation type as FDMA, the first communication device can determine the corresponding signal configuration parameters through Table 3. For example, if the first time-domain period = 0.001s, the subcarrier spacing of the sensing signal transmission can be determined to be 15kHz. That is, if sensing signal 1 and sensing signal 2 are two adjacent signals in the frequency domain, the subcarrier spacing between sensing signal 1 and sensing signal 2 is 15kHz; if sensing signal 3 and sensing signal 2 are two adjacent signals in the frequency domain, the subcarrier spacing between sensing signal 2 and sensing signal 3 is 15kHz; in this case, the subcarrier spacing between sensing signal 1 and sensing signal 3 may be 30kHz.

[0220] Table 4: CDMA Signal Configuration Parameters Table

[0221] row index Signal coding strategy <![CDATA[Time domain period T c (s)]]> <![CDATA[Number of sensing signals (2 n )]]> H01 Encoding Strategy 1 Time domain period 1 (e.g., 0.001s) n＝1～10 H02 Encoding Strategy 2 Time domain period 2 (e.g., 0.0005s) n＝1～10 H03 Encoding Strategy 3 Time domain period 3 (e.g., 0.00025s) n＝1～10

[0222] In Table 4, T c When n = 0.001, the corresponding signal encoding strategy is encoding strategy 1. The value of n can be understood by referring to the introduction in Table 2.

[0223] After determining the first time-domain period and the first modulation type as CDMA, the first communication device can determine the corresponding signal configuration parameters through Table 4. For example, if the first time-domain period = 0.001s, then the signal encoding strategy of the sensing signal can be determined as encoding strategy 1. That is, the sensing signal is encoded using encoding strategy 1.

[0224] Table 5: DDMA Signal Configuration Parameters

[0225] row index Phase shift <![CDATA[Time domain period T c (s)]]> <![CDATA[Number of sensing signals (2 n )]]> H01 Phase offset 1 Time domain period 1 (e.g., 0.001s) n＝1～10 H02 Phase offset 2 Time domain period 2 (e.g., 0.0005s) n＝1～10 H03 Phase offset 3 Time domain period 3 (e.g., 0.00025s) n＝1～10

[0226] In Table 5, T c When n = 0.001, the corresponding signal phase shift is phase shift 1. The value of n can be understood by referring to the introduction in Table 2.

[0227] After determining the first time-domain period and the first modulation type as DDMA, the first communication device can determine the corresponding signal configuration parameters through Table 5. For example, if the first time-domain period = 0.001s, the phase offset of the sensing signal can be determined to be phase offset 1. That is, the phase offset between adjacent sensing signals is phase offset 1. The principle of subcarrier spacing can be referred to for understanding the phase offset.

[0228] Additionally, DDMA based on empty bands can be understood by referring to Table 5. It's possible that in DDMA based on empty bands, the number of empty bands N will be added to the signal configuration parameters. empty The instruction information.

[0229] It should be noted that each row index in Tables 2 to 5 above is associated with one row of data. Of course, Tables 2 to 5 may also exclude the row index of the first column.

[0230] Regardless of whether the first modulation type belongs to one or a combination of TDMA, FDMA, CDMA, DDMA, or DDMA based on empty band, the signal configuration parameters may include the index of the second transmit port and a first mapping relationship, which includes the mapping relationship between the index of the second transmit port and the configuration information of the sensed signal.

[0231] Taking the first communication device determining four second transmission ports as an example, the first mapping relationship can include:

[0232] <Configuration information of sensing signal 1 for second transmission port 1 (e.g., 0000);

[0233] <Configuration information of sensing signal 2 for second transmission port 2 (e.g., 0001);

[0234] <Configuration information of sensing signal 3 for second transmission port 3 (e.g., 0010);

[0235] <Configuration information of the second transmission port 4 (e.g., 0011), sensing signal 4>.

[0236] The first mapping relationship can be understood as a combination of multiple key-value pairs. Using the index of the second transmission port as the key, the configuration information of the corresponding sensing signal can be determined.

[0237] Therefore, S303 may optionally include S303a.

[0238] S303a. The second communication device determines the configuration information of the sensing signal of the second transmission port from the first mapping relationship based on the index of the second transmission port.

[0239] For example, after the first communication device sends the indices of the four second transmission ports, such as 0000, 0001, 0010, and 0011, and the four key-value pairs in the aforementioned first mapping relationship to the second communication device, the second communication device can determine the configuration information of the corresponding sensing signal as the configuration information of sensing signal 1 based on the index 0000 of the second transmission port. Similarly, it can determine the configuration information of sensing signal 2 based on the index 0001 of the second transmission port, the configuration information of sensing signal 3 based on the index 0010 of the second transmission port, and the configuration information of sensing signal 4 based on the index 0011 of the second transmission port.

[0240] In this embodiment, the configuration information of the sensing signal may include indication information of the first modulation type, retrieval information, and relationship information. These will be described below:

[0241] 1. Indication information for the first modulation type;

[0242] The indication information of the first modulation type is used by the second communication device to determine the first modulation type;

[0243] The indication information of the first modulation type can be represented in binary form, such as: the indication information of the first modulation type is represented by the first bit and / or the second bit among multiple bits, and the first bit and the second bit are respectively associated with different first modulation types.

[0244] In this configuration, the first bit can be one or more bits preceding the first bit, and the second bit can be one or more bits following the first bit. For example, if the first modulation type is represented by two bits, such as XY, where X can be the first bit and Y can be the second bit, X can be associated with one modulation type, such as FDMA, and Y can be associated with another modulation type, such as TDMA. If XY is 10, it indicates that the first modulation type is FDMA; if XY is 01, it indicates that the first modulation type is TDMA; if XY is 11, it indicates that the first modulation type is FDMA+TDMA. Of course, the indication information of the first modulation type can also be represented by more bits to represent more modulation types, such as XYZWQ, where X, Y, Z, W, and Q can be associated with different modulation types respectively.

[0245] In addition, in the embodiments of this application, the number of bits of the indication information of the first modulation type can also be related to the number of second transmission ports. For example, if there are 16 second transmission ports, an 8-bit data mapping modulation type can be used, 11110000, where the first 4 bits 1111 can be associated with FDMA and the last 4 bits 0000 can be associated with TDMA.

[0246] Furthermore, if the indices of the 16 second transmit ports are represented by an 8-bit data mapping, if the index of the second transmit port is mapped to the first 4 bits, it indicates that the first modulation type of the sensed signal of the second transmit port is FDMA; if the index of the second transmit port is mapped to the last 4 bits, it indicates that the first modulation type of the sensed signal of the second transmit port is TDMA. If the index of the second transmit port is mapped to both the first 4 bits and the last 4 bits, it indicates that the first modulation type of the sensed signal of the second transmit port is FDMA+TDMA. Representing the first modulation type in this way reduces the amount of data transmission.

[0247] It should be noted that the modulation types associated with the different bits mentioned above are only for FDMA and TDMA as examples. In fact, the bits represented by X or Y can also be associated with CDMA, DDMA, etc. This application does not limit this.

[0248] 2. Information retrieval;

[0249] The retrieval information is used by the second communication device to retrieve basic information about the sensed signal under the first modulation type. For example, the retrieval information is used to retrieve basic information from a table. The retrieval information may include the row index in the table, or the first time domain period.

[0250] The basic information includes information indicating the quantity of sensed signals, and at least one of the following: subcarrier spacing of frequency division multiple access, time interval of time division multiple access, signal coding strategy of code division multiple access, or phase offset of Doppler multiple access.

[0251] The second communication device will also be pre-configured with the above-mentioned Tables 2 to 5.

[0252] If the first modulation type is TDMA, the retrieval information is the first time domain period T. c T c When T = 0.001, the second communication device can determine the use of T. c =0.001. The corresponding time interval is determined to be 80µs from Table 2.

[0253] If the first modulation type is FDMA, the retrieval information is the first time domain period T. c T c When T = 0.001, the second communication device can determine the use of T. c =0.001. The corresponding subcarrier spacing of 15KHz is determined from Table 3.

[0254] If the first modulation type is CDMA, the retrieval information is the first time domain period T. c T c When T = 0.001, the second communication device can determine the use of T. c =0.001. The corresponding encoding strategy is determined from Table 4 as encoding strategy 1.

[0255] If the first modulation type is DDMA, the retrieval information is the first time domain period T. c T c When T = 0.001, the second communication device can determine the use of T. c =0.001. The corresponding phase offset is determined from Table 5 as phase offset 1.

[0256] 3. Relationship information;

[0257] Relationship information is used to indicate the correspondence between sensing signals from different second transmitting ports, or / and the sequential relationship between different sensing signals corresponding to the same second transmitting port.

[0258] If the first modulation type is TDMA, or if multiple sensing signals are transmitted through a second transmit port, the relationship information can indicate the sequential relationship between the multiple sensing signals. For example, if sensing signal 1, sensing signal 4, sensing signal 2 and sensing signal 3 are transmitted through a second transmit port, then the second transmit port will transmit sensing signal 1, sensing signal 4, sensing signal 2 and sensing signal 3 sequentially at 80us time intervals.

[0259] If the first modulation type is FDMA, this second relationship can indicate the correspondence between sensed signals from different transmit ports. For example:

[0260] The correspondence is as follows: Sensing signal 1 (sensing signal at transmit port 0000), Sensing signal 2 (sensing signal at transmit port 0001), Sensing signal 3 (sensing signal at transmit port 0010), and Sensing signal 4 (sensing signal at transmit port 0011). This correspondence indicates that the subcarrier spacing between Sensing signal 2 and Sensing signal 1 is 15 kHz; the subcarrier spacing between Sensing signal 3 and Sensing signal 2 is 15 kHz, and the subcarrier spacing between Sensing signal 3 and Sensing signal 1 is 30 kHz; the subcarrier spacing between Sensing signal 4 and Sensing signal 3 is 15 kHz; the subcarrier spacing between Sensing signal 4 and Sensing signal 2 is 30 kHz, and the subcarrier spacing between Sensing signal 4 and Sensing signal 1 is 45 kHz.

[0261] If the correspondence is as follows: Sensing signal 1 (sensing signal at transmit port 0000), Sensing signal 4 (sensing signal at transmit port 0011), Sensing signal 2 (sensing signal at transmit port 0001), and Sensing signal 3 (sensing signal at transmit port 0010), then this correspondence indicates that the subcarrier spacing between sensing signal 4 and sensing signal 1 is 15 kHz; the subcarrier spacing between sensing signal 2 and sensing signal 4 is 15 kHz, and the subcarrier spacing between sensing signal 2 and sensing signal 1 is 30 kHz; the subcarrier spacing between sensing signal 3 and sensing signal 2 is 15 kHz, the subcarrier spacing between sensing signal 3 and sensing signal 4 is 30 kHz, and the subcarrier spacing between sensing signal 3 and sensing signal 1 is 45 kHz.

[0262] The principle of phase offset in DDMA can also be understood by referring to the principle of subcarrier spacing in FDMA.

[0263] If the index of a second transmit port is associated with both TDMA and FDMA, taking the four second transmit ports described above as an example, if the time interval associated with the indices of the four second transmit ports is 80µs, then all four second transmit ports will transmit the aforementioned sensing signal with a subcarrier spacing of 15kHz at 80µs intervals. Specifically, transmit port 0000 can transmit a sensing signal 1 every 80µs, transmit port 0001 can transmit a sensing signal 2 every 80µs, transmit port 0010 can transmit a sensing signal 3 every 80µs, and transmit port 0011 can transmit a sensing signal 4 every 80µs. The subcarrier spacing between the sensing signals transmitted by these four second transmit ports can be understood according to the description in the previous correspondence section.

[0264] The above-described solution provided in this application embodiment can determine the first modulation type through the indication information of the first modulation type, and then retrieve basic information by combining the retrieval information with the first modulation type. Then, by combining the relationship information, the accurate correspondence between the second transmitting port and the sensing signal can be achieved, thereby improving the accuracy of the sensing signal.

[0265] In the scheme described above, both the first and second communication devices are pre-configured with Tables 2 to 5. Thus, during transmission, only a small amount of signal configuration parameters needs to be transmitted to the second communication device, which can then locate the signal configuration parameters used to generate the sensing signal. This saves air interface overhead.

[0266] Optionally, the above sensing method may further include: the first communication device transmitting an index of the receiving port and a first mapping relationship, the first mapping relationship being used by the receiving port to process the echo signal of the sensing signal.

[0267] The index of the receiving port refers to the port for receiving the echo signal of the sensing signal determined by the first communication device for the receiving end. Sending the first mapping relationship to the receiving end helps the corresponding receiving port of the receiving end to better process the echo signal of the sensing signal.

[0268] The above combination Figure 3 The proposed solution can be applied to different sensing scenarios, which will be described below with reference to the accompanying diagrams.

[0269] like Figure 4 As shown, taking the first communication device as the central node and the second communication device as the transmitting end as an example, the sensing method includes:

[0270] S401. The receiving end sends the sensing area, resolution performance requirements, and speed measurement requirements to the central node.

[0271] Among them, speed measurement requirements are characterized by speed settings or scene settings, such as

[0272] Speed ​​setting: {V min V max Optionally, in DDMA scenarios based on unused bands, the speed settings may also include... about The function of this can be understood by referring to the introduction of the speed measurement range corresponding to different modulation types in the previous section.

[0273] Scene settings: Set scene indication information to indicate the sensing scene. The sensing scene can include a stationary scene, a low-speed scene, or a high-speed scene. The stationary scene, low-speed scene, or high-speed scene can correspond to different speed measurement ranges.

[0274] S402. Central node broadcasts joint sensing request.

[0275] S403. The transmitter and receiver respond to the joint sensing request and report the antenna panel configuration to the central node.

[0276] The antenna panel configuration can include the number of first transmitting ports, the number of receiving ports, etc. The transmitting and receiving ends can also report the movement trajectory of the transmitting or receiving ports, which is beneficial for more accurate selection of the transmitting port used to transmit the sensing signal, and the receiving port used to receive the echo signal of the sensing signal.

[0277] S404. The transmitter sends performance information to the central node.

[0278] This performance information may include the transmit power P supported by the transmit port. port and the types of quadrature signals supported by the transmit port. signal In other words, the type of orthogonal signal is also the type of signal modulation.

[0279] S405. The central node determines the second transmitting port and the receiving port participating in sensing based on the antenna panel configuration of the transmitting end and the antenna panel configuration of the receiving end.

[0280] S406. The central node determines the signal configuration parameters of the second transmission port based on the speed measurement requirements, the carrier parameters, the number of first transmission ports, and the first modulation type.

[0281] This step can be referred to. Figure 3 Understand the corresponding parts of the content.

[0282] S407. The central node sends the index of the second transmission port and the first mapping relationship to the transmitting end.

[0283] S408. The central node sends the index of the receiving port and the first mapping relationship to the receiving end.

[0284] S409. The transmitter transmits sensing signals according to the signal configuration parameters.

[0285] This step can be referred to. Figure 3 Understand the corresponding parts of the content.

[0286] S410. The receiver receives the echo signal.

[0287] The receiving end can use the index of the receiving port participating in the sensing to receive the echo signal. After receiving the echo signal, the receiving end can process the echo signal according to the first mapping relationship to determine the sensing result; or it can forward the echo signal to other nodes, which can process the echo signal to determine the sensing result. This application does not limit this.

[0288] like Figure 5 As shown, the first communication device is the receiving end, that is, the above-mentioned... Figure 4 Taking the central node of the corresponding content as an example, where the receiving end integrates the functions, and the second communication device is the transmitting end, this sensing method includes:

[0289] S501. The receiver acquires the sensing area, resolution performance requirements, and speed measurement requirements.

[0290] This process can be determined by the receiving end itself, including the sensing area, resolution performance requirements, and speed measurement needs; or it can be determined by receiving the sensing area, resolution performance requirements, and speed measurement needs from other nodes.

[0291] S502. The receiving end broadcasts a joint sensing request.

[0292] S503. The transmitter responds to the joint sensing request and reports the antenna panel configuration to the receiver.

[0293] S504. The transmitter sends performance information to the receiver.

[0294] S505. The receiver determines the second transmitting port and the receiving port participating in sensing based on the antenna panel configuration of the transmitter and the antenna panel configuration of the receiver.

[0295] S506. The receiving end determines the signal configuration parameters of the second transmitting port based on the speed measurement requirements, the carrier parameters, the number of the first transmitting ports, and the first modulation type.

[0296] This step can be referred to. Figure 3 Understand the corresponding parts of the content.

[0297] S507. The central node sends the index of the second transmission port and the first mapping relationship to the transmitting end.

[0298] S508. The transmitter transmits sensing signals according to the signal configuration parameters.

[0299] This step can be referred to. Figure 3 Understand the corresponding parts of the content.

[0300] S509. The receiver receives the echo signal.

[0301] like Figure 6 As shown, the first communication device is the transmitter, that is, the aforementioned Figure 4 The functionality of the central node corresponding to the content is integrated at the transmitting end. In this scenario, the transmitting end is also the second communication device. The interaction process between the first and second communication devices can be eliminated. This sensing method includes:

[0302] S601. The receiver sends the sensing area, resolution performance requirements, and speed measurement requirements to the transmitter.

[0303] S602. Transmitter broadcasts a joint sensing request.

[0304] S603. The receiver responds to the joint sensing request and reports the antenna panel configuration to the transmitter.

[0305] S604. The transmitter determines the second transmitting port and the receiving port participating in sensing based on the antenna panel configuration of the transmitter and the antenna panel configuration of the receiver.

[0306] S605. The transmitter determines the signal configuration parameters of the second transmitter port based on the speed measurement requirements, the carrier parameters, the number of first transmitter ports, and the first modulation type.

[0307] This step can be referred to. Figure 3 Understand the corresponding parts of the content.

[0308] S606. The transmitter sends the index of the receiving port and the first mapping relationship to the receiver.

[0309] S607. The transmitter transmits sensing signals according to the signal configuration parameters.

[0310] This step can be referred to. Figure 3 Understand the corresponding parts of the content.

[0311] S608. The receiver receives the echo signal.

[0312] like Figure 7 As shown, taking the first communication device as the central node and the second communication devices as transmitter 1 and transmitter 2 as an example, the sensing method includes:

[0313] S701. The receiving end sends the sensing area, resolution performance requirements, and speed measurement requirements to the central node.

[0314] S702. Central node broadcasts joint sensing request.

[0315] S703. Transmitter 1, Transmitter 2 and Receiver respond to the joint sensing request and report the antenna panel configuration to the central node.

[0316] S704. Transmitter 1 and Transmitter 2 send their respective performance information to the central node.

[0317] S705. The central node determines the second transmitting port and the receiving port participating in sensing based on the antenna panel configuration of transmitting end 1, the antenna panel configuration of transmitting end 2, and the antenna panel configuration of receiving end.

[0318] S706. The central node determines the signal configuration parameters of the second transmission port based on the speed measurement requirements, the carrier parameters, the number of the first transmission ports, and the first modulation type.

[0319] This step can be referred to. Figure 3 Understand the corresponding parts of the content.

[0320] S707. The central node sends the index of the corresponding second transmission port and the first mapping relationship to transmitter 1 and transmitter 2 respectively.

[0321] S708. The central node sends the index of the receiving port and the first mapping relationship to the receiving end.

[0322] S709. Transmitter 1 and transmitter 2 transmit sensing signals according to their respective signal configuration parameters.

[0323] This step can be referred to. Figure 3 Understand the corresponding parts of the content.

[0324] S710. The receiver receives the echo signal.

[0325] like Figure 8 As shown, taking the first communication device as the central node and the second communication device as the measurement node as an example, the sensing method includes:

[0326] S801. The measurement node sends the sensing area, resolution performance requirements, and speed measurement requirements to the central node.

[0327] S802. Central node broadcasts joint sensing request.

[0328] S803. The measurement node responds to the joint sensing request and reports the antenna panel configuration to the central node.

[0329] S804. The measurement node sends performance information to the central node.

[0330] S805. The central node determines the second transmitting port and the receiving port participating in sensing based on the antenna panel configuration of the measurement node.

[0331] S806. The central node determines the signal configuration parameters of the second transmission port based on the speed measurement requirements, the carrier parameters, the number of first transmission ports, and the first modulation type.

[0332] This step can be referred to. Figure 3 Understand the corresponding parts of the content.

[0333] S807. The central node sends the index of the second transmitting port, the index of the receiving port participating in sensing, and the first mapping relationship to the measurement node.

[0334] S808. The measurement node transmits sensing signals according to the signal configuration parameters.

[0335] This step can be referred to. Figure 3 Understand the corresponding parts of the content.

[0336] S809. The receiver receives the echo signal.

[0337] above Figures 4 to 8 Several different scenarios have been illustrated. In fact, this application is not limited to the above scenarios. The sensing method of this application can also be applied to other scenarios with multiple transmitters, multiple receivers, and multiple measurement nodes.

[0338] The communication system and sensing method in the embodiments of this application have been described above. The communication device provided in the embodiments of this application will be described below. Please refer to... Figure 9 , Figure 9 This is a schematic diagram of a communication device according to an embodiment of this application. The communication device 900 can be used to perform... Figures 3 to 8 For details regarding the steps in the embodiments shown, please refer to the relevant descriptions in the above method embodiments.

[0339] The communication device 900 includes a transceiver module 901 and a processing module 902. The transceiver module 901 can implement the corresponding communication functions, and the processing module 902 is used for data processing. The transceiver module 901 can also be referred to as a communication interface or a communication unit.

[0340] Optionally, the communication device 900 may further include a storage unit, which can be used to store instructions and / or data. The processing module 902 can read the instructions and / or data in the storage unit so that the communication device can implement the aforementioned method embodiments.

[0341] The communication device 900 can be used to perform the actions in the method embodiments described above. The communication device 900 can be a terminal device or an access network device, or a component or module configurable in a terminal device or access network device. The transceiver module 901 is used to perform the receiving-related operations in the method embodiments described above, and the processing module 902 is used to perform the processing-related operations in the method embodiments described above.

[0342] Optionally, the transceiver module 901 may include a sending module and a receiving module. The sending module is used to perform the sending operation in the above method embodiments. The receiving module is used to perform the receiving operation in the above method embodiments.

[0343] It should be noted that the communication device 900 may include a transmitting module but not a receiving module. Alternatively, the communication device 900 may include a receiving module but not a transmitting module. Specifically, it depends on whether the above-described scheme executed by the communication device 900 includes both transmitting and receiving actions.

[0344] As an example, the communication device 900 is used to perform the above. Figure 3 The actions in the illustrated embodiment.

[0345] The processing module 902 is used to determine the signal configuration parameters of the second transmission port based on the speed measurement requirements, the parameters of the carrier wave, the number of the first transmission ports, and the first modulation type; wherein the second transmission port is included in the first transmission port, and the first modulation type is at least one of the signal modulation types supported by the first transmission port;

[0346] The transceiver module 901 is used to transmit signal configuration parameters; wherein, the signal configuration parameters are used to transmit sensing signals through the second transmitting port.

[0347] It should be understood that the specific process of each module performing the above-mentioned steps has been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0348] The processing module 902 in the above embodiments can be implemented by at least one processor or processor-related circuitry. The transceiver module 901 can be implemented by a transceiver or transceiver-related circuitry. The transceiver module 901 can also be referred to as a communication unit or communication interface. The storage unit can be implemented by at least one memory.

[0349] This application also provides another communication device 1000. For example... Figure 10 As shown, the communication device 1000 includes a processor 1010, which is coupled to a memory 1020. The memory 1020 is used to store computer programs or instructions and / or data. The processor 1010 is used to execute the computer programs or instructions and / or data stored in the memory 1020, so that the method in the above method embodiment is executed.

[0350] Optionally, the communication device 1000 may include one or more processors 1010.

[0351] Optionally, such as Figure 10 As shown, the communication device 1000 may also include a memory 1020.

[0352] Optionally, the communication device 1000 may include one or more memory 1020.

[0353] Alternatively, the memory 1020 may be integrated with the processor 1010 or set separately.

[0354] Optionally, such as Figure 10 As shown, the communication device 1000 may further include a transceiver 1030, which is used for receiving and / or transmitting signals. For example, the processor 1010 is used to control the transceiver 1030 to receive and / or transmit signals.

[0355] As one option, the communication device 1000 is used to implement the operations described in the above method embodiments.

[0356] For example, processor 1010 is used to implement processing-related operations in the above method embodiments, and transceiver 1030 is used to implement receiving-related operations in the above method embodiments.

[0357] This application also provides a communication device 1000, which can be a terminal device, an access network device, or a chip or module in a core network device. This communication device 1000 can be used to perform the operations described in the above method embodiments.

[0358] When the communication device 1000 is a communication device Figure 11 A simplified schematic diagram of a communication device is shown. Figure 11 As shown, the communication device includes a processor, a memory, and a transceiver. The memory stores computer program code, and the transceiver includes a transmitter 1031, a receiver 1032, an RF circuit (not shown), an antenna 1033, and input / output devices (not shown). The processor is mainly used to process communication protocols and data, control the communication device, execute software programs, and process software program data. The memory is mainly used to store software programs and data. The RF circuit is mainly used for converting baseband signals to RF signals and processing RF signals. The antenna is mainly used for transmitting and receiving RF signals in the form of electromagnetic waves. Input / output devices, such as touchscreens, displays, and keyboards, are mainly used to receive user input data and output data to the user. It should be noted that some types of communication devices may not have input / output devices.

[0359] When data needs to be transmitted, the processor performs baseband processing on the data to be transmitted and outputs a baseband signal to the radio frequency (RF) circuit. The RF circuit then processes the baseband signal and transmits it outward as electromagnetic waves through the antenna. When data is sent to the communication device, the RF circuit receives the RF signal through the antenna, converts it into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal back into data and processes it. For ease of explanation, Figure 11 Only one memory, processor, and transceiver are shown in the illustration. In actual communication device products, there may be one or more processors and one or more memories. Memory can also be called storage medium or storage device, etc. Memory can be set up independently of the processor or integrated with the processor; this application does not limit this.

[0360] In the embodiments of this application, the antenna and radio frequency circuit with transceiver function can be regarded as the transceiver unit of the communication device, and the processor with processing function can be regarded as the processing unit of the communication device.

[0361] like Figure 11 As shown, the communication device includes a processor 1010, a memory 1020, and a transceiver 1030. The processor 1010 can also be called a processing unit, processing board, processing module, processing device, etc., and the transceiver 1030 can also be called a transceiver unit, transceiver, transceiver device, etc.

[0362] Optionally, the devices in transceiver 1030 used for receiving functions can be considered as receiving units, and the devices in transceiver 1030 used for transmitting functions can be considered as transmitting units. That is, transceiver 1030 includes a receiver and a transmitter. A transceiver may also be called a transceiver unit, transceiver circuit, etc. A receiver may also be called a receiver unit, receiving circuit, etc. A transmitter may also be called a transmitter, transmitting unit, or transmitting circuit, etc.

[0363] For example, in one implementation, processor 1010 is used to execute Figure 3 In the illustrated embodiment, the transceiver 1030 is used to perform the processing actions. Figure 3 Transceiver actions. For example, transceiver 1030 is used to perform... Figure 3 The transmit / receive operation in step S302 of the illustrated embodiment. Processor 1010 is used to execute... Figure 3 The processing operation of step S301 in the illustrated embodiment.

[0364] It should be understood that Figure 11 This is merely an example and not a limitation; the communication device described above, including a transceiver unit and a processing unit, may not rely on... Figure 11The structure shown.

[0365] When the communication device 1000 is a chip, the chip includes a processor, a memory, and a transceiver. The transceiver can be an input / output circuit or a communication interface; the processor can be a processing unit integrated on the chip, a microprocessor, or an integrated circuit. In the above method embodiments, the transmitting operation of the communication device can be understood as the chip's output, and the receiving operation of the communication device in the above method embodiments can be understood as the chip's input.

[0366] This application also provides a computer-readable storage medium storing computer instructions for implementing the methods in the above-described method embodiments.

[0367] For example, when the computer program is executed by a computer, it enables the computer to implement the methods performed in the above method embodiments.

[0368] This application also provides a computer program product containing instructions that, when executed by a computer, cause the computer to perform the method described in the above method embodiments.

[0369] This application also provides a communication system, which includes the access network device and terminal device described in the above embodiments.

[0370] This application also provides a chip device, including a processor, configured to call computer programs or computer instructions stored in a memory, so that the processor executes the above-described... Figures 3 to 8 The method of the embodiment shown.

[0371] In one possible implementation, the input of the chip device corresponds to the above. Figures 3 to 8 The receiving operation in the illustrated embodiment corresponds to the output of the chip device described above. Figures 3 to 8 The sending operation in the illustrated embodiment.

[0372] Optionally, the processor is coupled to the memory via an interface.

[0373] Optionally, the chip device may also include a memory that stores computer programs or computer instructions.

[0374] The processor mentioned above can be a general-purpose central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more devices used to control the above. Figures 3 to 8The illustrated embodiment is an integrated circuit for program execution of the method. The memory mentioned above may be read-only memory (ROM) or other types of static storage devices capable of storing static information and instructions, such as random access memory (RAM).

[0375] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the explanations and beneficial effects of the relevant content in any of the communication devices provided above can be referred to the corresponding method embodiments provided above, and will not be repeated here.

[0376] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0377] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0378] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0379] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0380] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the essential contribution of the technical solution of this application, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a server, or an access network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory, random access memory, magnetic disks, or optical disks.

Claims

1. A sensing method, characterized in that, The method is applied to a first communication device, and the method includes: Based on the speed measurement requirements, carrier parameters, number of first transmission ports, and first modulation type, the signal configuration parameters of the second transmission port are determined; wherein, the second transmission port is included in the first transmission port, and the first modulation type is at least one of the signal modulation types supported by the first transmission port; Send the signal configuration parameters; wherein the signal configuration parameters are used for the second transmitting port to send sensing signals.

2. The method according to claim 1, characterized in that, The first modulation type meets the signal-to-noise ratio requirement.

3. The method according to claim 1 or 2, characterized in that, The step of determining the signal configuration parameters of the second transmission port based on the speed measurement requirements, carrier parameters, the number of first transmission ports, and the first modulation type includes: The first time-domain period is determined based on the speed measurement requirements, the parameters of the carrier, and the number of the first transmission ports; The signal configuration parameters of the second transmission port are determined based on the first modulation type, the first time domain period, and the number of the first transmission ports.

4. The method according to any one of claims 1-3, characterized in that, The signal configuration parameters include the index of the second transmitting port and a first mapping relationship, wherein the first mapping relationship includes the mapping relationship between the index of the second transmitting port and the configuration information of the sensing signal.

5. The method according to claim 4, characterized in that, The method further includes: The index of the receiving port and the first mapping relationship are sent, the first mapping relationship being used by the receiving port to process the echo signal of the sensed signal.

6. The method according to claim 4 or 5, characterized in that, The configuration information of the sensing signal includes indication information of the first modulation type, retrieval information, and relationship information; wherein, The indication information of the first modulation type is used to determine the first modulation type; The retrieval information is used to retrieve basic information of the sensing signal under the first modulation type. The basic information includes quantity indication information of the sensing signal, and at least one of the following: subcarrier spacing of frequency division multiple access, time interval of time division multiple access, signal coding strategy of code division multiple access, or phase offset of Doppler multiple access. The relationship information is used to indicate the correspondence between sensing signals from different second transmitting ports, or / and the sequential relationship between different sensing signals corresponding to the same second transmitting port.

7. The method according to claim 6, characterized in that, The indication information of the first modulation type is represented by a first bit and / or a second bit among a plurality of bits, wherein the first bit and the second bit are respectively associated with different first modulation types.

8. The method according to claim 2, characterized in that, The first modulation type satisfies the signal-to-noise ratio requirement by: the first signal-to-noise ratio corresponding to the first modulation type is greater than the signal-to-noise ratio requirement; wherein, the first signal-to-noise ratio is determined based on the transmit power of the first transmit port, the noise energy of the first transmit port, and the first time domain period, and the first time domain period is determined based on the velocity measurement requirement, the parameters of the carrier, and the number of the first transmit ports.

9. The method according to any one of claims 1-8, characterized in that, The speed measurement range of the first modulation type includes the speed measurement requirement.

10. The method according to claim 9, characterized in that, When the first modulation type is time division multiple access, Doppler multiple access, or binary code division multiple access, the speed measurement range is: V max ≤λ / 4N t T c V min ≥-λ / 4N t T c ; When the first modulation type is a band-free Doppler multiple access, the velocity measurement range is related to the number of targets within the resolution unit. Related; Among them, V max V represents the upper limit of the speed measurement range. min N represents the lower limit of the speed measurement range. t T represents the number of the second transmit ports. c λ represents the time-domain period of each signal pulse, and λ represents the wavelength of the carrier wave.

11. The method according to claim 10, characterized in that, At that time, V max ≤λ / 4T c V min ≥-λ / 4T c ,when At that time, V max ≤λ / 4(N t +N empty )T c V min ≥; N empty The number of empty bands.

12. The method according to any one of claims 1-11, characterized in that, The speed measurement requirements include the maximum and minimum speeds that need to be sensed; or, scene indication information, which indicates the range of speeds that need to be sensed.

13. A sensing method, characterized in that, The method includes: Receive signal configuration parameters from a second transmission port of a first communication device; wherein the signal configuration parameters are determined based on speed measurement requirements, carrier parameters, the number of first transmission ports, and a first modulation type, the second transmission port is included in the first transmission port, and the first modulation type is at least one of the signal modulation types supported by the first transmission port; Based on the signal configuration parameters of the second transmission port, a sensing signal is transmitted through the second transmission port.

14. The method according to claim 13, characterized in that, The first modulation type meets the signal-to-noise ratio requirement.

15. The method according to claim 13 or 14, characterized in that, The signal configuration parameters include the index of the second transmitting port and a first mapping relationship, wherein the first mapping relationship includes the mapping relationship between the index of the second transmitting port and the configuration information of the sensing signal.

16. The method according to claim 13 or 14, characterized in that, The configuration information of the sensing signal includes indication information of the first modulation type, retrieval information, and relationship information; wherein, The indication information of the first modulation type is used to determine the first modulation type; The retrieval information is used to retrieve basic information of the sensing signal under the first modulation type. The basic information includes quantity indication information of the sensing signal, and at least one of the following: subcarrier spacing of frequency division multiple access, time interval of time division multiple access, signal coding strategy of code division multiple access, or phase offset of Doppler multiple access. The relationship information is used to indicate the correspondence between sensing signals from different second transmitting ports, or / and the sequential relationship between different sensing signals corresponding to the same second transmitting port.

17. The method according to claim 16, characterized in that, The step of transmitting a sensing signal through the second transmitting port according to the signal configuration parameters of the second transmitting port includes: Based on the index of the second transmitting port, the configuration information of the sensing signal of the second transmitting port is determined from the first mapping relationship; The sensing signal is transmitted through the second transmission port according to the first modulation type, the retrieval information, and the relationship information.

18. The method according to claim 16 or 17, characterized in that, The indication information of the first modulation type is represented by a first bit and / or a second bit among a plurality of bits, wherein the first bit and the second bit are respectively associated with different first modulation types.

19. A communication device, characterized in that, include: The transceiver module and the processing module, The transceiver module is used to perform the sending step or receiving step in the method according to any one of claims 1-18; The processing module is used to perform steps other than the sending step and the receiving step in the method according to any one of claims 1-18.

20. A communication device, characterized in that, Includes at least one processor coupled to memory; The memory is used to store programs or instructions; The at least one processor is used to execute the program or instructions to cause the apparatus to implement the method as described in any one of claims 1 to 18.

21. A chip device, characterized in that, Includes a processor for invoking a program stored in memory, such that the processor performs the method as described in any one of claims 1 to 18.

22. The chip device according to claim 21, characterized in that, The chip device also includes the memory.

23. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores program instructions that, when executed, cause the method as described in any one of claims 1 to 18 to be performed.

24. A computer program product containing program instructions, characterized in that, When the program instructions are executed on a computer, the computer causes the computer to perform the method as described in any one of claims 1 to 18.

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