Perception method and corresponding device

Abstract

A sensing method can be applied to an orthogonal frequency division multiplexing (OFDM) communication sensing integrated system, the method comprises: acquiring at least two sets of parameter configurations, the at least two sets of parameter configurations comprising a first parameter configuration for sensing and a second parameter configuration for sensing, the first parameter configuration comprising a first subcarrier spacing (SCS), and the second parameter configuration comprising a second subcarrier spacing (SCS); the second parameter configuration comprises a second SCS, and the first SCS is larger than the second SCS; and sensing according to the at least two sets of parameter configurations. As the sensing and detecting distance is constrained by the length of the OFDM symbol, and the length of the OFDM symbol is generally the reciprocal of the SCS, the relatively large first SCS can be used for sensing and detecting the minimum distance as small as possible corresponding to the relatively short symbol length, and the relatively small second SCS can be used for sensing and detecting the relatively long symbol length, so that higher symbol energy can be obtained at a receiving side, and the receiving side can be used for receiving the received signal. And a larger distance can be sensed and detected, so that the sensing and detecting range is enlarged.

Description

A sensing method and corresponding device Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a sensing method and corresponding device. Background Art

[0002] With the widespread adoption of internet applications and terminal devices, people's demand for wireless communications has further increased. Communication technology is also constantly evolving. In addition to having stronger communication capabilities, future communication systems will also have perception capabilities. Communication systems are generally integrated with communication and perception.

[0003] Communication and perception integration can use the transmission, reflection, and scattering of radio waves to perceive and characterize the environment, perform high-precision positioning and tracking, and simultaneously image, map, and locate, enhance human senses, and perform gesture and activity recognition.

[0004] Therefore, how to perceive has become an urgent problem to be solved.

[0005] Summary of the Invention

[0006] The present application provides a sensing method for improving the range of sensing ranging. The present application also provides a corresponding communication method, a communication device, a computer-readable storage medium, and a computer program product.

[0007] In a first aspect, the present application provides a perception method, comprising: obtaining at least two sets of parameter configurations, the at least two sets of parameter configurations including a first parameter configuration for perception, and a second parameter configuration for perception, the first parameter configuration including a first subcarrier spacing (SCS), the second parameter configuration including a second SCS, the first SCS being greater than the second SCS; and performing perception according to the at least two sets of parameter configurations.

[0008] The method can be performed by a first device, which can be a communication device or a communication device that can support the communication device to implement the functions required by the perception method, such as a chip. Exemplarily, the first device is a terminal device / access network device, or a chip provided in the terminal device / access network device for implementing the functions of the terminal device / access network device, or other components for implementing the functions of the terminal device / access network device. In the following introduction, the first device is taken as an example of a terminal device / access network device. It should be noted that the first device can also be a dedicated perception device.

[0009] The above method is adopted to perform perception by configuring at least two sets of parameter configurations. In this way, there can be at least two SCSs, and the sizes of at least two SCSs are different. Because the distance of perception detection is constrained by the length of the orthogonal frequency division multiplexing (OFDM) symbol, and the length of the OFDM symbol is usually the reciprocal of the SCS, the larger first SCS corresponds to a shorter symbol length and can be used to perceive and detect the smallest possible minimum distance. The smaller second SCS corresponds to a longer symbol length, which can obtain higher symbol energy on the receiving side and can be used to perceive and detect a larger distance, thereby increasing the range of perception detection.

[0010] In one possible implementation, the first SCS is the largest SCS among the SCSs supported by at least one frequency band in an activated state; or, the first SCS is one of the SCSs supported by a frequency band in an inactivated state.

[0011] In this application, the frequency band may be a carrier or a bandwidth part (Bandwidth part, BWP).

[0012] In this possible implementation, the SCS of the active frequency band and the inactive frequency band may be different. Usually, the communication device will give priority to selecting the largest SCS among the SCSs supported by the active frequency band. If the largest SCS meets the perception requirements, the largest SCS among the SCSs supported by the active frequency band can be used as the first SCS. Because the length of the OFDM symbol is usually the reciprocal of the SCS, the larger the first SCS, the smaller the length of the OFDM symbol. In this way, the smallest possible minimum distance can be perceived, thereby reducing the distance blind spot. The second SCS is smaller than the first SCS. The second parameter configuration can be used to perceive the distance to detect distant targets, or to perceive the maximum detection distance (increase the maximum unambiguous distance), so that the perception detection range can be improved.

[0013] In one possible implementation, the first SCS is one of the SCSs supported by the frequency band in an inactive state, and the SCS supported by the frequency band in an inactive state is larger than the SCS supported by the frequency band in an active state.

[0014] In this possible implementation, if the largest SCS among the SCSs supported by the frequency band in the activated state does not meet the perception requirements, any SCS larger than the SCS supported by the frequency band in the inactivated state can be selected as the first SCS from the SCSs supported by the frequency band in the inactivated state. In order to use the largest possible SCS to reduce the distance blind spot, the largest SCS among the SCSs supported by the frequency band in the inactivated state can be selected as the first SCS. The first SCS can be determined by the communication device used for perception and then used to execute the aforementioned perception process, or it can be determined by other perception management devices and then notified to the communication device used for perception through configuration signaling.

[0015] In one possible implementation, the first parameter configuration also includes a first cyclic prefix (CP), and the second parameter configuration also includes a second CP. The first CP corresponds to the first SCS, the second CP corresponds to the second SCS, and the first CP is smaller than the second CP.

[0016] In this possible implementation, the first CP and the second CP may be used to reduce multipath interference of a return signal of the sent perception signal.

[0017] In a possible implementation, the first CP is a first product, which is the product of a normal CP corresponding to the first SCS and α, where 0≤α<1.

[0018] In this possible implementation, the first CP is obtained by multiplying α by the normal CP. This configuration can shorten the length of the sensing signal as much as possible, so that the sensed detection distance can be as small as possible.

[0019] In one possible implementation, the second CP is a second product, which is: the product of the normal CP corresponding to the second SCS and β, or the product of the physical random access channel (PRACH) CP corresponding to the second SCS and β, β>1.

[0020] In this possible implementation, the second CP is obtained by multiplying β by the normal CP or PRACH CP. This long CP configuration is equivalent to increasing the length of the OFDM symbol. This can be used to eliminate reflected multipath interference and, with the same number of transmissions, the longer symbols can bring greater received energy, thereby supporting a longer perception and detection distance.

[0021] In one possible implementation, the first parameter configuration also includes the length of the first receiving window, where the length of the first receiving window is not less than the sum of the length of the first symbol and twice the length of the first CP, and the length of the first symbol is the reciprocal of the first SCS; or, the length of the first receiving window is N times the length of the first symbol, where N>1.

[0022] In this possible implementation, the length of the receive window (Rx window) refers to the configured time length for receiving return signals, where return signals refer to multipath signals such as reflected and diffracted signals corresponding to the transmitted perception signal. If the time delay difference between different multipath signals is within the first CP range, the length of the first receive window is no less than the sum of the length of the first symbol and twice the length of the first CP. In this way, targets with multipath delays within the first CP can be perceived within the duration of the first receive window. If the time delay difference between different multipath signals is greater than the first symbol length, these multipath signals will not interfere with each other, and the length of the first receive window can be N times the length of the first symbol. This allows for a greater perception and detection range.

[0023] In one possible implementation, the second parameter configuration also includes the length of the second receiving window, and the length of the second receiving window is not less than the sum of the length of the second symbol and twice the length of the second CP, and the length of the second symbol is the reciprocal of the second SCS; or, the length of the second receiving window is not less than the sum of twice the length of the second CP and the length of (M+1) second symbols, where M is an integer and M≥2.

[0024] In this possible implementation, if the arrival delay difference between different multipath signals is within the second CP range, the length of the second receiving window is no less than the sum of the length of the second symbol and twice the length of the second CP. In this way, the multipath delay target within the second CP can be detected within the duration of the second receiving window. If the length of the second receiving window is no less than the sum of twice the length of the second CP and the length of (M+1) second symbols, the detection distance can be increased, meeting the requirements of more different coverage distances.

[0025] In a possible implementation, the length of a transmission symbol of the perception signal obtained by using the second parameter configuration is not greater than the length of the first receiving window, and the first receiving window is the receiving window of the perception signal configured by using the first parameter.

[0026] In this possible implementation, the length of the transmitted symbol of the sensing signal obtained using the second parameter configuration is no longer than the length of the first receiving window. This can be described as follows: With reference to the respective start times of the sensing signals using the two parameter configurations, the start time of the second receiving window of the sensing signal using the second parameter configuration is no later than the end time of the first receiving window of the sensing signal using the first parameter configuration. In this way, the first receiving window and the second receiving window overlap in time, ensuring seamless detection within the target coverage area.

[0027] In a possible implementation, the method further includes: receiving first indication information, where the first indication information is used to indicate a start time of a receiving window of a perception signal configured using the first parameter and / or a start time of a receiving window of a perception signal configured using the second parameter.

[0028] In this possible implementation, a reception window for a perception signal configured using the first parameters is a first reception window, and a reception window for a perception signal configured using the second parameters is a second reception window. The start time of the first reception window and / or the second reception window can be indicated by the first indication information. In this way, the start time of the first reception window and / or the second reception window can be accurately controlled.

[0029] In one possible implementation, the first parameter configuration also includes at least one of a first protection interval GP, a second GP, or a third GP, and the second parameter configuration also includes at least one of a first GP, a second GP, or a third GP; wherein the first GP is a GP between perception resources and communication resources of the same frequency; the second GP is a GP between perception resources and communication resources of different frequencies; or, the second GP is a GP between first perception resources and second perception resources of different frequencies; the third GP is a time interval between a sending symbol of a perception signal and a start time of a corresponding receiving window, and the length of the time interval is greater than a first threshold.

[0030] In this possible implementation, perception resources refer to resources used for perception and detection, and communication resources refer to resources used for communication. For example, in the Internet of Vehicles, resources used to indicate navigation information from access network equipment or other vehicles are considered communication resources, while resources used to detect surrounding vehicles are considered perception resources. Intra-frequency refers to two resources with the same frequency, while hetero-frequency refers to two resources with different frequencies. The first threshold is at least the duration of the third GP. The third GP can be used in long-distance perception scenarios, such as satellite perception scenarios, where the time interval between symbol transmission and the start of the receive window is large. The resources in this time interval can be used to transmit other signals. This improves resource utilization.

[0031] In a possible implementation, the method further includes: receiving second indication information, where the second indication information is used to indicate the length of the time interval.

[0032] In this possible implementation, the time interval may be indicated by the second indication information, which is conducive to reasonable planning of the transmission of other perception signals or communication signals.

[0033] In one possible implementation, the first parameter configuration also includes a first repetition transmission interval, the second parameter configuration also includes a second repetition transmission interval, and the first repetition transmission interval is smaller than the second repetition transmission interval; wherein the first repetition transmission interval is used to indicate the transmission interval of the perception signal or channel using the first parameter configuration, and the second repetition transmission interval is used to indicate the transmission interval of the perception signal or channel using the second parameter configuration.

[0034] In this possible implementation, because the repetition transmission interval affects the maximum unambiguous distance of perception detection and also affects the accumulated energy over a period of time, the repetition transmission intervals of the two sets of parameter configurations are different, which is conducive to measuring targets at different distances.

[0035] In a possible implementation, the second repetition transmission interval is an integer multiple of the first repetition transmission interval.

[0036] In this possible implementation, the second repetition transmission interval is an integer multiple of the first repetition transmission interval, so that the perception signal of the first parameter configuration can be interspersed in the second repetition transmission interval, which is beneficial to improving resource utilization. Moreover, when at least two sets of parameter configurations are used for perception on the same frequency band, the second repetition transmission interval is an integer multiple of the first repetition transmission interval, which is beneficial to staggering the resources used for perception with each set of parameter configurations and avoiding perception conflicts.

[0037] In one possible implementation, the perception signal determined by the first parameter configuration is transmitted through the first beam, and the perception signal determined by the second parameter configuration is transmitted through the second beam; or, the perception signal determined by the first parameter configuration and the perception signal determined by the second parameter configuration are transmitted on the first beam in a first time period and on the second beam in a second time period, and the first time period and the second time period do not overlap.

[0038] In this possible implementation, by transmitting perception signals with different parameter configurations through different beams, or by transmitting perception signals with two parameter configurations on different beams in different time periods, targets at long and short distances in different directions can be perceived, thereby improving the range of perception detection.

[0039] In one possible implementation, the first parameter configuration also includes information on time domain resources and frequency domain resources used for perception, the information on time domain resources is used to indicate the time domain resources used to transmit the perception signal, and the information on frequency domain resources is used to indicate the frequency domain resources for transmitting the perception signal.

[0040] In this possible implementation, the parameter configuration may further indicate the time domain resources and frequency domain resources used for perception, which is helpful for quickly determining the time and frequency resources used for perception and then sending or receiving the perception signal.

[0041] In a possible implementation, the above step of: performing perception according to at least two sets of parameter configurations includes: performing perception on a first frequency band according to a first parameter configuration; and performing perception on a second frequency band according to a second parameter configuration.

[0042] In this possible implementation, the sensing process may be performed on multiple frequency bands, and parameter configurations on different frequency bands may be different, so that different distances may be detected through different frequency bands.

[0043] In one possible implementation, the above-mentioned step of: perceiving according to at least two sets of parameter configurations includes: perceiving on a first frequency band according to at least two sets of parameters; the method also includes: obtaining at least one set of parameter configurations for perceiving on a second frequency band, at least one set of parameter configurations being included in at least two sets of parameter configurations, or at least one set of parameter configurations being different from at least two sets of parameter configurations; perceiving on a second frequency band according to at least one set of parameter configurations.

[0044] In this possible implementation, the values ​​of each parameter in at least one parameter configuration set can be completely different from the values ​​of each parameter in at least two parameter configuration sets, or they can be partially identical, as long as the values ​​of each parameter in each parameter configuration set in at least one parameter configuration set are not completely identical to the values ​​of each parameter in each parameter configuration set in at least two parameter configuration sets. This solution indicates that one or more parameter configuration sets can be used for sensing on different frequency bands, so that each frequency band can measure targets at different distances.

[0045] In one possible implementation, the third perception signal transmitted on the first frequency band and the fourth perception signal transmitted on the second frequency band are transmitted in a time division multiplexing manner, and the receiving window of the third perception signal overlaps with the receiving window of the fourth perception signal; or, the receiving window of the third perception signal transmitted on the first frequency band overlaps with the receiving window of the fourth perception signal transmitted on the second frequency band, and the sending time of the third perception signal overlaps with the sending time of the fourth perception signal.

[0046] In this possible implementation, when multi-band sensing is performed, multiple bands may share a power amplifier (PA), or multiple bands may not share a PA. If the PA is shared, the third perception signal transmitted on the first frequency band and the fourth perception signal transmitted on the second frequency band are transmitted using time division multiplexing, and the receiving window of the third perception signal overlaps with the receiving window of the fourth perception signal. If the PA is not shared, the receiving window of the third perception signal transmitted on the first frequency band overlaps with the receiving window of the fourth perception signal transmitted on the second frequency band, and the sending time of the third perception signal overlaps with the sending time of the fourth perception signal. In this way, compared with the non-overlapping case, the perception transmission and reception delay can be reduced.

[0047] In one possible implementation, obtaining at least two sets of parameter configurations includes: receiving at least two sets of parameter configurations through a target interface, the target interface is a new radio positioning protocol (NRPPa) or a long term evolution positioning protocol (LPP); or, the target interface is a Uu interface; or, the target interface is a sidelink interface.

[0048] In a possible implementation, receiving the first parameter configuration and the second parameter configuration through the target interface includes: receiving the first parameter configuration and the second parameter configuration from the perception management functional unit through the target interface.

[0049] A second aspect of the present application provides a communication device, which includes a transceiver module and a processing module, wherein:

[0050] The transceiver module is used to obtain at least two sets of parameter configurations, wherein the at least two sets of parameter configurations include a first parameter configuration for perception and a second parameter configuration for perception, wherein the first parameter configuration includes a first subcarrier spacing SCS, and the second parameter configuration includes a second SCS, and the first SCS is greater than the second SCS.

[0051] A processing module is configured to perform perception based on at least two sets of parameter configurations.

[0052] In one possible implementation, the first SCS is the largest SCS among the SCSs supported by at least one frequency band in an activated state.

[0053] In one possible implementation, the first SCS is one of the SCSs supported by the frequency band in an inactive state, and the SCS supported by the frequency band in an inactive state is larger than the SCS supported by the frequency band in an active state.

[0054] In one possible implementation, the first parameter configuration also includes a first cyclic prefix CP, and the second parameter configuration also includes a second CP. The first CP corresponds to the first SCS, the second CP corresponds to the second SCS, and the first CP is smaller than the second CP.

[0055] In a possible implementation, the first CP is a first product, which is the product of a normal CP corresponding to the first SCS and α, where 0≤α<1.

[0056] In one possible implementation, the second CP is a second product, which is: the product of the normal CP corresponding to the second SCS and β, or the product of the physical random access channel PRACH CP corresponding to the second SCS and β, β>1.

[0057] In one possible implementation, the first parameter configuration also includes the length of the first receiving window, where the length of the first receiving window is not less than the sum of the length of the first symbol and twice the length of the first CP, and the length of the first symbol is the reciprocal of the first SCS; or, the length of the first receiving window is N times the length of the first symbol, where N>1.

[0058] In one possible implementation, the second parameter configuration also includes the length of the second receiving window, and the length of the second receiving window is not less than the sum of the length of the second symbol and twice the length of the second CP, and the length of the second symbol is the reciprocal of the second SCS; or, the length of the second receiving window is not less than the sum of twice the length of the second CP and the length of (M+1) second symbols, where M is an integer and M≥2.

[0059] In a possible implementation, the length of a transmission symbol of the perception signal obtained by using the second parameter configuration is not greater than the length of the first receiving window, and the first receiving window is the receiving window of the perception signal configured by using the first parameter.

[0060] In one possible implementation, the transceiver module is further used to receive first indication information, where the first indication information is used to indicate the start time of the receiving window of the perception signal configured using the first parameter and / or the start time of the receiving window of the perception signal configured using the second parameter.

[0061] In one possible implementation, the first parameter configuration also includes at least one of a first protection interval GP, a second GP, or a third GP, and the second parameter configuration also includes at least one of a first GP, a second GP, or a third GP; wherein the first GP is a GP between perception resources and communication resources of the same frequency; the second GP is a GP between perception resources and communication resources of different frequencies; or, the second GP is a GP between first perception resources and second perception resources of different frequencies; the third GP is a time interval between a sending symbol of a perception signal and a start time of a corresponding receiving window, and the length of the time interval is greater than a first threshold.

[0062] In a possible implementation, the transceiver module is further configured to receive second indication information, where the second indication information is used to indicate the length of the time interval.

[0063] In one possible implementation, the perception resources of the first perception signal within the time range of the third GP are used to transmit a communication signal or channel, or the perception resources of the first perception signal within the time range of the third GP are used to transmit a second perception signal or channel.

[0064] In one possible implementation, the first parameter configuration also includes a first repetition transmission interval, the second parameter configuration also includes a second repetition transmission interval, and the first repetition transmission interval is smaller than the second repetition transmission interval; wherein the first repetition transmission interval is used to indicate the transmission interval of the perception signal or channel using the first parameter configuration, and the second repetition transmission interval is used to indicate the transmission interval of the perception signal or channel using the second parameter configuration.

[0065] In a possible implementation, the second repetition transmission interval is an integer multiple of the first repetition transmission interval.

[0066] In one possible implementation, the perception signal determined by the first parameter configuration is transmitted through the first beam, and the perception signal determined by the second parameter configuration is transmitted through the second beam; or, the perception signal determined by the first parameter configuration and the perception signal determined by the second parameter configuration are transmitted on the first beam in a first time period and on the second beam in a second time period, and the first time period and the second time period do not overlap.

[0067] In one possible implementation, the first parameter configuration also includes information on time domain resources and frequency domain resources used for perception, the information on time domain resources is used to indicate the time domain resources used to transmit the perception signal, and the information on frequency domain resources is used to indicate the frequency domain resources for transmitting the perception signal.

[0068] In a possible implementation, the processing module is configured to perform perception on a first frequency band according to a first parameter configuration; and to perform perception on a second frequency band according to a second parameter configuration.

[0069] In a possible implementation, the processing module is configured to perform sensing on a first frequency band based on at least two sets of parameters.

[0070] The transceiver module is further used to obtain at least one set of parameter configurations for sensing on the second frequency band, where the at least one set of parameter configurations is included in the at least two sets of parameter configurations, or the at least one set of parameter configurations is different from the at least two sets of parameter configurations.

[0071] The processing module is further configured to perform sensing on the second frequency band according to at least one set of parameter configurations.

[0072] In one possible implementation, the third perception signal transmitted on the first frequency band and the fourth perception signal transmitted on the second frequency band are transmitted in a time division multiplexing manner, and the receiving window of the third perception signal overlaps with the receiving window of the fourth perception signal; or, the receiving window of the third perception signal transmitted on the first frequency band overlaps with the receiving window of the fourth perception signal transmitted on the second frequency band, and the sending time of the third perception signal overlaps with the sending time of the fourth perception signal.

[0073] In one possible implementation, the transceiver module is used to receive at least two sets of parameter configurations through a target interface, where the target interface is NRPPa or Long Term Evolution Positioning Protocol LPP; or, the target interface is a Uu interface; or, the target interface is a sidelink interface.

[0074] In one possible implementation, the transceiver module is used to receive the first parameter configuration and the second parameter configuration from the perception management functional unit through the target interface.

[0075] A third aspect of the present application provides a communication device, comprising a processor, wherein the processor is configured to call and execute a computer program stored in a memory, so that the processor implements the first aspect or any one of the implementations of the first aspect.

[0076] Optionally, the communication device further includes a transceiver; the processor is further configured to control the transceiver to transmit and receive signals.

[0077] Optionally, the communication device includes a memory in which a computer program is stored.

[0078] The communication device described in the third aspect above may be a device or a chip (system) in the device.

[0079] The fourth aspect of the present application provides a communication device, which may be a first device, or a module or unit (for example, a chip, or a chip system, or a circuit) in the first device that corresponds one-to-one to the method / operation / step / action described in the first aspect / second aspect, or a device that can be used in combination with the first device.

[0080] A fifth aspect of the present application provides a computer program product comprising instructions, characterized in that when the computer program product is run on a computer, the computer is caused to execute the first aspect or any one of the implementation methods of the first aspect.

[0081] In a sixth aspect, the present application provides a computer-readable storage medium comprising computer instructions. When the computer instructions are executed on a computer, the computer executes the first aspect or any one of the implementation methods of the first aspect.

[0082] In a seventh aspect, the present application provides a chip device, comprising a processor, which is connected to a memory and calls a program stored in the memory so that the processor executes the above-mentioned first aspect or any one of the implementation methods of the first aspect.

[0083] In an eighth aspect, the present application provides a communication system, which includes a communication device, and the communication device is used to execute the above-mentioned first aspect or any one of the implementation methods of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0084] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0085] FIG1A is a schematic structural diagram of a communication system provided in an embodiment of the present application;

[0086] FIG1B is another schematic structural diagram of a communication system provided in an embodiment of the present application;

[0087] FIG1C is another schematic diagram of the structure of the communication system provided in an embodiment of the present application;

[0088] FIG2 is a schematic diagram of an embodiment of a sensing method provided in an embodiment of the present application;

[0089] FIG3 is a schematic diagram of a perception example provided by an embodiment of the present application;

[0090] 4A to 4D are schematic diagrams of several examples of receiving windows provided by the present application;

[0091] 5A to 5D are schematic diagrams of several examples of the guard interval GP provided by the present application;

[0092] FIG6 is a schematic diagram of repeated transmission intervals of sensing signals with different parameter configurations provided in an embodiment of the present application;

[0093] 7A and 7B are schematic diagrams of a combination of a beam and a repeated transmission interval provided in an embodiment of the present application;

[0094] 8A and 8B are schematic diagrams of sidelink configurations provided in an embodiment of the present application;

[0095] 9A to 9C are schematic diagrams of several examples of multi-band transmission provided by embodiments of the present application;

[0096] FIG10A is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0097] FIG10B is another schematic structural diagram of a communication device provided in an embodiment of the present application;

[0098] FIG11 is another schematic structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0099] The present application provides a sensing method for maximizing the range of sensing distance measurement. The present application also provides a corresponding communication method, a communication device, a computer-readable storage medium, and a computer program product. These are described in detail below.

[0100] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0101] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: satellite communication, fifth generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), mobile communication systems after 5G networks (for example, 6G mobile communication systems), vehicle to everything (V2X) communication systems, etc.

[0102] In addition to having stronger communication capabilities, the above-mentioned communication system also has perception capabilities. It is a communication system with integrated communication and perception. A communication system with integrated perception and communication means that the communication system can communicate through communication signals (communication signals can also be described as communication channels) and can also perform perception measurements through perception signals (perception signals can also be described as perception channels).

[0103] In this application, "perception" refers to the use of radio wave transmission, reflection, and scattering to perceive the surrounding environment and detect targets, such as sensing other vehicles or objects around them through sensing signals in the vehicle-to-everything (V2X) network. Of course, the communication system of this application can also be an industrial automation system or other communication system that involves perception.

[0104] The communication system of the present application may be a communication system based on orthogonal frequency division multiplexing (OFDM) and time division multiplexing (TDM).

[0105] The communication system provided in this application can be understood by referring to Figures 1A to 1C.

[0106] As shown in Figure 1A, the communication system shown in Figure 1A includes a core network, access network equipment and terminal equipment. The core network includes a sensing management function (SEMF) module. The SEMF module can be integrated into the existing equipment of the core network or can be an independent device. The SEMF module can manage the parameter configuration for perception and can also perform perception calculations based on the perception measurement results.

[0107] The SEMF module can send the parameter configuration used for perception to the access network device or the terminal device through the target interface. For example, the perception parameter configuration can be sent to the access network device through the new radio positioning protocol (NRPPa) and sent to the terminal device through the long term evolution positioning protocol (LPP).

[0108] The access network device or terminal device can perform perception based on the received parameter configuration and obtain the perception result.

[0109] As shown in Figure 1B, the communication system includes an access network device and a terminal device, wherein the access network device is integrated with a SEMF module. The access network device transmits parameter configurations to the terminal device via the Uu interface between the access network device and the terminal device. The terminal device can sense the received parameter configurations and obtain a sensed result.

[0110] As shown in FIG1C , the communication system includes multiple terminal devices (a vehicle is used as an example in FIG1C ), and a SEMF module may be integrated into a terminal device. The terminal device integrated with the SEMF module sends parameter configurations to other terminal devices via a sidelink. These terminal devices can sense the received parameter configurations and obtain sensing results.

[0111] The perception results in this application can be used for target identification and positioning, etc. The process of processing the perception results to achieve target identification and positioning can be completed by the device that measures the perception results, or the device that measures the perception results can send the corresponding perception results to the SEMF module, and the SEMF module performs calculations based on the perception results to identify the target or locate, etc.

[0112] The communication systems introduced in Figures 1A to 1C above are each configured with only one SEMF module. It should be noted that multiple SEMF modules may also be configured in the communication system. For example, in Figure 1A, not only is a SEMF module configured in the core network device, but a SEMF module may also be configured in the access network device and / or terminal device, or a special device for configuring the SEMF module may be deployed in the communication system. Only one of these SEMF modules may be started for perception management, or different SEMF modules may be started at different times for perception management, or the SEMF module used for perception management may be determined by other means, for example, the SEMF module used for perception management may be determined by the device in the core network or the access network device.

[0113] The following is an introduction to the terminal equipment and access network equipment of this application.

[0114] A terminal device may be a wireless terminal device capable of receiving scheduling and instruction information from devices in the core network or access network. A wireless terminal device may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection capabilities, or other processing devices connected to a wireless modem or a device with sensing capabilities.

[0115] Terminal devices, also known as user equipment (UE), mobile stations (MS), or mobile terminals (MT), are devices that include wireless communication capabilities and / or sensing capabilities (providing voice / data connectivity to users), such as handheld devices or in-vehicle devices with wireless connectivity. Currently, some examples of terminal devices 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 the Internet of Vehicles, 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 devices, complete vehicle equipment, in-vehicle modules, and vehicles. Wireless terminals in industrial control can be cameras and robots. Wireless terminals in smart homes can be televisions, air conditioners, sweepers, speakers, and set-top boxes.

[0116] Access network equipment is deployed in a radio access network to provide wireless communication and / or sensing functions for terminal devices. For example, an access network equipment can be a radio access network (RAN) node that connects the terminal device to a wireless network.

[0117] 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 (for example, home evolved NodeB, or home Node B, HNB), baseband unit (BBU), access point (AP) in wireless fidelity (WIFI) system, wireless relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP), etc., and can also be access network equipment in 5G mobile communication system. For example, a next-generation NodeB (gNB), a transmission reception point (TRP), or a 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 a network node that constitutes a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DU).

[0118] In some deployments, a gNB may include a centralized unit (CU) and a DU. The gNB may also include an active antenna unit (AAU). The CU implements some gNB functions, while the DU implements some gNB functions. For example, the CU is responsible for processing non-real-time protocols and services, implementing the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers. The DU is responsible for processing physical layer protocols and real-time services, implementing the functions of the radio link control (RLC), media access control (MAC), and physical (PHY) layers. The AAU implements some physical layer processing functions, RF processing, and active antenna-related functions. RRC layer information ultimately becomes PHY layer information, or is converted from PHY layer information. Therefore, in this architecture, higher-layer signaling (such as RRC layer signaling) can also be considered to be sent by the DU, or by both the DU and the AAU. It is understood that the access network equipment can include one or more of a CU node, a DU node, or an AAU node. In addition, the CU may be classified as an access network device in an access network (radio access network, RAN), or the CU may be classified as an access network device in a core network (core network, CN), which is not limited in this application.

[0119] To facilitate understanding of the embodiments of the present application, the following first briefly introduces the terms involved in the present application.

[0120] 1. Orthogonal Frequency Division Multiplexing (OFDM): OFDM is a type of multicarrier modulation. Its main concept is to divide the channel into several orthogonal subchannels, converting high-speed data signals into parallel, low-speed sub-data streams, which are modulated and transmitted on each subchannel. Orthogonal signals can be separated by using correlation techniques at the receiver, which reduces mutual interference (ISI) between subchannels. The signal bandwidth on each subchannel is smaller than the correlation bandwidth of the channel, so each subchannel can be viewed as flat fading, eliminating inter-symbol interference (ISI). Moreover, since the bandwidth of each subchannel is only a fraction of the original channel bandwidth, channel equalization becomes relatively easy.

[0121] 2. Time Division Multiplexing (TDM): TDM is a working mode in communication systems where a resource can be used for different purposes at different times, such as sending signals for a period of time and receiving signals for another period of time.

[0122] 3. Carrier: Carrier refers to radio waves of a specific frequency band that are modulated to transmit signals, or electromagnetic waves of a certain bandwidth.

[0123] 3. Subcarrier: In the OFDM system, a subcarrier is obtained by dividing a carrier of a certain bandwidth.

[0124] 4. Subcarrier spacing (SCS): SCS is the width of a subcarrier, usually 15kHz or multiples of 15kHz, where kHz stands for kilohertz.

[0125] 5. Symbol length: refers to the length of the OFDM symbol. The symbol length is usually the reciprocal of the subcarrier spacing. For example, the symbol length corresponding to a 15kHz SCS is 66.7 microseconds (us).

[0126] 6. Cyclic Prefix (CP): The CP is formed by copying the signal at the end of an OFDM symbol to the beginning. There are two main CP lengths: normal CP and extended CP. The normal CP is 4.7µs long, and the extended CP is 16.67µs long. The CP can be correlated with other multipath component information to obtain complete information. It also enables time estimation and frequency synchronization. In the physical random access channel (PRACH), there is also a PRACH CP, which is usually larger than the normal CP.

[0127] 7. Receive window (Rx window): This refers to the configured length of time for receiving return signals. Return signals refer to multipath signals such as reflected signals and diffracted signals corresponding to the transmitted perception signals.

[0128] 8. Retransmission Interval: refers to the time interval between the start times of two signals, or the interval between the end time of the previous signal and the start time of the next signal.

[0129] 9. Frequency band: Frequency band refers to a frequency domain resource of a certain width, which can be a carrier or a bandwidth part (BWP).

[0130] 10. Beam: A beam is a communication resource. A beam can be a wide beam, a narrow beam, or other types of beams. The technology used to form the beam can be beamforming technology or other technical means. Beamforming technology can specifically include digital beamforming technology, analog beamforming technology, and hybrid digital / analog beamforming technology. Different beams can be considered different resources. The beam used to send signals can be called a transmission beam (Tx beam), and the beam used to receive signals can be called a reception beam (Rx beam). The transmission beam can refer to the distribution of signal strength in different directions in space after the signal is transmitted by the antenna, and the reception beam can refer to the signal strength distribution of the wireless signal received from the antenna in different directions in space.

[0131] The perception method provided in the embodiment of the present application can be executed by the above-mentioned access network device or terminal device, or it can be executed by the chip in the above-mentioned access network device or terminal device. The perception method of the present application is introduced below in conjunction with the accompanying drawings.

[0132] As shown in FIG2 , an embodiment of the sensing method provided in the embodiment of the present application includes:

[0133] 201. Obtain at least two sets of parameter configurations, the at least two sets of parameter configurations include a first parameter configuration for perception, and a second parameter configuration for perception, the first parameter configuration includes a first SCS, the second parameter configuration includes a second SCS, and the first SCS is greater than the second SCS.

[0134] In this application, each set of parameter configurations can be understood as a perception format. Thus, at least two sets of parameter configurations are at least two perception formats.

[0135] The first SCS and the second SCS can be configured as 2 u *15KHz, as long as the value of u when configuring the first SCS is greater than the value of u when configuring the second SCS, u can be a natural number such as 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, etc. The second SCS can also be the SCS configured by PRACH, such as 1.25KHz or 5KHz.

[0136] 202.Perform perception based on at least two sets of parameter configurations.

[0137] In an embodiment of the present application, when performing perception detection, if the perception detection is to cover as large a distance range as possible, it can be achieved by perceiving the smallest possible minimum distance (reducing the distance blind spot) and perceiving the largest possible maximum distance (increasing the maximum unambiguous distance) or reaching the target distance.

[0138] The minimum distance is constrained by the length of the OFDM symbol:

[0139] When the transmitting and receiving antennas are integrated (or co-located), they correspond to the monostatic mode. To prevent the transmitted sensing signal from interfering with the received return signal, the transceiver must wait until the sensing signal is transmitted before starting reception. Therefore, the return signal of the sensing signal can only come from a distance greater than 1 / 2*Tsym*c, where Tsym is the symbol length of the sensing signal and c is the speed of light. The minimum distance can be the detection distance of target 1 corresponding to t1-t0 as shown in Figure 3, where t0 is the start time of the sensing signal and t1 is the end time of the sensing signal.

[0140] When the transmit and receive antennas are separated, the bistatic mode is used. This minimum distance is also constrained by the distance and position of the transmit (Tx) and receive (Rx) antennas. When the receive antenna receives both the direct path sent sensing signal and the reflected sensing signal, interference from the transmit signal to the receive signal can occur. For example, the return signal of the sensing signal can only originate from a distance greater than 1 / 2*(Tsym*c+Dtxrx), where Dtxrx is the distance between the Tx and Rx antennas. Including the distance Dtxrx between the Tx and Rx antennas in the calculation process can reduce line-of-sight interference between the transmitted sensing signal and the received return signal. When the transmit and receive antennas are separated, the transmit and receive antennas can also be located on separate devices. In beam-based transmission systems, beam pointing can be used to prevent interference from the direct signal from the transmit antenna on the received signal at the receive antenna.

[0141] The maximum distance is limited by the maximum transmit power and signal duration, as well as channel conditions, external interference, target distance, and the maximum unambiguous distance. Unambiguous ranging for adjacent sensing signals is typically determined by the distance corresponding to the time interval between the transmissions of adjacent sensing signals. This time interval can be seen as t3-t0 in Figure 3. The maximum unambiguous distance sensed during this time interval is the distance to target 2 in Figure 3. The next sensing signal can be sent starting at t3.

[0142] In this application, in the case of integrated transmission and reception, the sensing detection distance is constrained by the length of the OFDM symbol. It can also be extended to the case of separate transmission and reception with direct signal interference. The sensing detection distance is also constrained by the length of the OFDM symbol, and the length of the OFDM symbol is usually the reciprocal of the SCS. Therefore, the SCS in the parameter configuration will affect the sensing detection distance.

[0143] In the present application, perception is performed by configuring at least two sets of parameter configurations. In this way, there can be at least two SCSs, and the sizes of at least two SCSs are different. Among them, the larger first SCS corresponds to a shorter symbol length and can be used to perceive and detect the smallest possible minimum distance. The smaller second SCS corresponds to a longer symbol length, which can obtain higher symbol energy on the receiving side and can be used to perceive and detect a larger distance, thereby increasing the range of perception and detection.

[0144] The above-mentioned first SCS is the largest SCS among the SCSs supported by at least one frequency band in an activated state; or, the first SCS is one of the SCSs supported by a frequency band in an inactivated state.

[0145] In an embodiment of the present application, the SCS of the active frequency band and the inactive frequency band may be different. Usually, the communication device will give priority to selecting the largest SCS among the SCSs supported by the active frequency band. If the largest SCS meets the perception requirements, the largest SCS among the SCSs supported by the active frequency band can be used as the first SCS. The larger the first SCS is, the smaller the length of the OFDM symbol is, so that the smallest possible minimum distance can be perceived, thereby reducing the distance blind spot. The second SCS is smaller than the first SCS. Under the same number of transmissions, the longer OFDM symbol can bring greater receiving energy to support a longer perception detection distance. The second parameter can be used to configure the perception detection distance of a distant target, or to perceive the maximum detection distance (increase the maximum unambiguous distance), so that the perception detection range can be improved.

[0146] The above-mentioned first SCS is one of the SCSs supported by the frequency band in the inactive state, and the SCS supported by the frequency band in the inactive state is larger than the SCS supported by the frequency band in the active state.

[0147] In an embodiment of the present application, if the largest SCS among the SCSs supported by the activated frequency band does not meet the perception requirements, an SCS larger than the SCS supported by the activated frequency band can be selected as the first SCS from the SCSs supported by the inactivated frequency band. In this way, the largest possible SCS can be used to reduce the distance blind spot.

[0148] In the embodiment of the present application, the frequency band with a certain frequency range may correspond to a carrier or bandwidth portion, which may be located in a specific frequency band, or may be the entire frequency band FR1 (410 MHz to 7125 MHz) and FR2-1 (24250 MHz to 52600 MHz) supported by the sensing device; or FR1, FR2-1, FR2-2 (52600 to 71000). When an inactive frequency band is used, corresponding indication information may be sent through signaling to indicate the inactive frequency band.

[0149] In addition to SCS, each set of parameter configurations in the embodiment of the present application may also include at least one of CP, receiving window, starting time of the receiving window, guard period (GP), repeated transmission interval, number of repeated transmissions, beam, time domain resource information, frequency domain resource information, etc. The roles of these parameters in the perception process are introduced below.

[0150] 1. CP;

[0151] The first parameter configuration also includes a first CP, and the second parameter configuration also includes a second CP. The first CP corresponds to the first SCS, the second CP corresponds to the second SCS, and the first CP is smaller than the second CP.

[0152] 1. First CP;

[0153] In the first parameter configuration, in order to detect the smallest possible distance, the length of the OFDM symbol can be reduced as much as possible. In this way, the length of the first CP also needs to be reduced as much as possible. The first CP can be 0. Usually, the first CP is configured as the first product. The first product is the product of the normal CP corresponding to the first SCS and α, 0≤α<1. Among them, α can usually be the reciprocal of a natural number or 2 (-n) , n is a natural number.

[0154] Among them, the typical normal CP value is 144*K*2 (-u) +16*K*Tc, or 144*K*2 (-u) *Tc, where u corresponds to the subcarrier spacing parameter configuration, K = 64, Tc = 1 / (480*10 3 *4096), the denominator of Tc corresponds to Hz.

[0155] In the embodiment of the present application, the coefficient α can be configured through signaling, and the SEMF module or the access network device or the terminal device can configure the coefficient α for the sensing device through signaling.

[0156] The embodiment of the present application can more flexibly adjust the first CP by configuring the coefficient α. In this way, flexible adjustment of the first CP can flexibly control the length of the OFDM symbol, thereby covering targets with different distance detection requirements.

[0157] 2. Second CP;

[0158] In the second parameter configuration, in order to support a longer sensing detection distance, the length of the second CP can be increased, which can suppress multipath interference caused by reflected signals from a longer distance.

[0159] In an embodiment of the present application, the second CP is a second product, which is: the product of the normal CP corresponding to the second SCS and β, or the product of the physical random access channel PRACH CP corresponding to the second SCS and β, β>1.

[0160] Where β can be an integer greater than 0, usually β = 2 n , n is a natural number. If only the maximum sensing detection distance is considered, the length of the PRACH CP and the symbol length can be used as the sensing signal. The PRACH CP lengths are {288, 576, 864, 216, 360, 504, 936, 1240, 2048} * K * 2 (-u) *Tc or {3168, 4688, 21024}*K*Tc; the symbol length corresponds to 1, 2, 4, 6, or 8 OFDM symbol lengths. For sensing detection, the supported sensing distance range is more flexible than that of PRACH. When considering supporting the minimum sensing detection range, the symbol length cannot be too long. Considering that the multipath delay of the return signal of the sensing signal may be greater than the second CP length, the PRACH CP length plus the normal symbol length can be considered as the sensing signal symbol.

[0161] 2. Receive window (Rx window);

[0162] 1. First receiving window;

[0163] The first parameter configuration also includes the length of the first receiving window, where the length of the first receiving window is not less than the sum of the length of the first symbol and twice the length of the first CP, and the length of the first symbol is the inverse of the first SCS; or, the length of the first receiving window is N times the length of the first symbol, where N>1.

[0164] Among them, if the delay difference between the arrival of different multipath signals is within the first CP range, the length of the first receiving window is not less than the sum of the length of the first symbol and twice the length of the first CP. In this way, the multipath delay target within the first CP can be perceived within the duration of the first receiving window.

[0165] For an understanding of this situation, refer to Figure 4A. As shown in Figure 4A, within the length of the first receive window (Rx window), the arrival delay difference between different return signals (multipath signals) corresponding to the sensing signal is within the first CP range. The transmitted symbol of the sensing signal and the received symbol of the return signal are the same length. The aforementioned first symbol can be the received symbol, and both the sensing signal and the return signal use the first CP. The window length of the first Rx window must be no less than the sum of the length of the received symbol and twice the length of the first CP. This allows for sensing and detecting targets within the first CP within the first Rx window, such as the targets within the detection range shown in Figure 4A.

[0166] If the time delay difference between arrivals of different multipath signals is greater than the first symbol length, these multipath signals will not interfere with each other, and the length of the first receiving window can be N times the length of the first symbol, so that a larger perception detection distance can be supported.

[0167] For more information about this situation, refer to Figure 4B . As shown in Figure 4B , within the second Rx window, the transmitted symbol of the sensing signal and the received symbol of the return signal are the same length, and the difference in arrival delays between the different return signals is greater than the length of the received symbol. For example, the first Rx window length should be greater than or equal to a multiple of the received symbol length. This allows for detection of targets at greater distances, such as the target within the detection range shown in Figure 4B .

[0168] 2. Second receiving window;

[0169] The second parameter configuration also includes the length of the second receiving window, which is not less than the sum of the length of the second symbol and twice the length of the second CP, and the length of the second symbol is the inverse of the second SCS; or, the length of the second receiving window is not less than the sum of twice the length of the second CP and the length of (M+1) second symbols, where M is an integer and M≥2.

[0170] If the delay difference between the arrival of different multipath signals is within the second CP range, the length of the second receiving window is not less than the sum of the length of the second symbol and twice the length of the second CP. In this way, the multipath delay target within the second CP can be perceived within the duration of the second receiving window.

[0171] In this embodiment of the present application, if the arrival delay difference between different multipath signals is within the second CP range, the length of the second receiving window can be understood with reference to the description of FIG4A . If the length of the second receiving window is not less than twice the length of the second CP plus the length of (M+1) second symbols, it can be understood with reference to FIG4C . The aforementioned second symbol is a transmitted symbol or a received symbol in FIG4C . In FIG4C , the second CP + two repeated transmitted symbols serve as the sensing signal. The distance corresponding to the length of the second CP within the second Rx window plus the first received symbol can be used as the maximum detection distance (detection range). When the received symbol is repeated, the length of the second receiving window is greater than or equal to the length of the multiple repeated received symbols plus the length of the second CP. As shown in FIG4C , the length of the second receiving window is equal to the length of the second CP plus the length of three received symbols. In FIG4C , a repeated transmitted symbol in the sensing signal can also be understood as an extended CP, with the original CP plus one transmitted symbol serving as the second CP. This configuration can increase the sensing detection distance and meet the requirements of more diverse coverage distances.

[0172] In addition, in the embodiment of the present application, when the two sets of parameter configurations are used as complementary perception configurations, they must be able to support a minimum perception detection distance and a reasonable maximum perception detection distance. To ensure that perception detection within the target coverage area is seamlessly connected, the first time window and the second time window must meet the following requirements: the length of the transmitted symbol of the perception signal obtained using the second parameter configuration is no longer than the length of the first receiving window. Alternatively, the perception signals of the two parameter configurations are referenced by their respective start times, and the start time of the second receiving window of the perception signal of the second parameter configuration is no later than the end time of the first receiving window of the perception signal of the first parameter configuration. The process of perception using the first parameter configuration and the second parameter configuration can be understood with reference to Figure 4D.

[0173] As shown in Figure 4D , the end time of the first receiving window is the end time of the received symbol configured using the first parameter. The start time of the second receiving window is the start time of the received symbol configured using the second parameter. The sensing signals of the two parameter configurations use the start time of their respective sensing signals as a reference. The start time of the second receiving window is after the start time of the first receiving window and before the end time of the first receiving window.

[0174] In the embodiment of the present application, the relationship between the minimum distance of perception detection and the target distance of perception detection (maximum unambiguous distance) and SCS, CP and receiving window can be understood by referring to Table 1.

[0175] Table 1: Relationship between perceived detection range and SCS, CP, and receiving window

[0176] Table 1 above uses a dual-symbol sensing signal containing a CP as an example. Table 1 shows the SCS corresponding to u ranging from 0 to 10 and the corresponding normal CP length, including the single-symbol time T1 containing the CP, the dual-symbol time T2 containing the CP, the duration of the second Rx window, the minimum sensing detection distance, and the sensing detection target distance. In this application, the duration of the second Rx window can be adjusted and configured based on the target coverage distance, or adapted based on the actual number of symbols or time slot length, such as typically taking an integer number of symbols. Furthermore, when configuring a repeated transmission sensing format, since the received return signal energy can accumulate, the configured second Rx window length can be greater than the value shown in Table 1. The second Rx window length can be further configured based on the target sensing distance, the number of repeated transmissions, and the delay range. The second Rx window length is generally greater than or equal to the length of the received symbol plus the length of the CP. When the received symbol is repeated, the second Rx window length is greater than or equal to the length of the CP plus the length of the first received symbol and the length of the repeated received symbol.

[0177] In an embodiment of the present application, first indication information may be received, where the first indication information is used to indicate a start time of a reception window for a perception signal configured using first parameters and / or a start time of a reception window for a perception signal configured using second parameters. In this way, the start time of the first reception window and / or the second reception window can be accurately controlled.

[0178] 3. GP;

[0179] The first parameter configuration further includes at least one of a first GP, a second GP, or a third GP, and the second parameter configuration further includes at least one of the first GP, the second GP, or the third GP.

[0180] 1. First GP;

[0181] The first GP is the GP between the sensing resources and the communication resources of the same frequency.

[0182] Perception resources refer to those used for sensing and detection, while communication resources refer to those used for communication. For example, in the Internet of Vehicles, resources used to indicate navigation information from access network equipment or other vehicles are communication resources, while resources used to detect surrounding vehicles are perception resources. Co-frequency refers to the fact that perception resources and communication resources have the same frequency.

[0183] For more information about the first GP, refer to Figure 5A. As shown in Figure 5A, the first GP includes: one time interval between transmitted and received symbols in the sensing resource; another time interval between transmitted and received symbols between the sensing resource and the communication resource. In Figure 5A, the frequency of the sensing resource is the same as the frequency of the communication resource. This first GP is typically the time interval used for RF conversion, and can be the time interval from receiving a communication signal to sending a sensing signal, or from receiving a sensing signal to sending a communication signal, or from sending a communication signal to sending a sensing signal.

[0184] 2. Second GP;

[0185] The second GP is the GP between the perception resources and communication resources of different frequencies; or, the second GP is the GP between the first perception resources and the second perception resources of different frequencies; different frequencies means that the frequencies of the perception resources and the communication resources are different, or the frequencies of the first perception resources and the second perception resources are different.

[0186] For more information about the second GP, see Figure 5B . As shown in Figure 5B , the second GP is the time used for inter-frequency handover. For example, when the communication signal uses an active frequency band and the perception signal uses an inactive frequency band, the communication resources and the perception signal are resources of different frequencies. Thus, the time intervals between sending the communication signal and sending the perception signal, and between receiving the communication signal and sending the perception signal, can both be the second GP.

[0187] 3. Third GP;

[0188] The third GP is a time interval between a sending symbol of the perception signal and a start time of a corresponding receiving window, and a length of the time interval is greater than a first threshold.

[0189] The first threshold is at least the time of the third GP. The third GP can be applied to long-distance perception scenarios.

[0190] The third GP can be understood with reference to Figures 5C and 5D . As shown in Figures 5C and 5D , the time interval between the transmitted symbol and the corresponding received symbol of the perception signal is relatively large, and can be used to transmit communication signals or other perception signals. The difference is that in Figure 5C , the perception resources of the perception signal and the communication resources of the intermediate communication signal are co-frequency resources, while in Figure 5D , the perception resources of the perception signal and the communication resources of the intermediate communication signal are inter-frequency resources.

[0191] In Figures 5C and 5D, the configurable length between the transmit symbol (Tx) and the receive symbol (Rx) of the perception signal corresponding to the third GP can also be described as being used for communication transmission or other perception operations. The end time of the third GP is the start time of the receive window of the perception signal, and the start time of the receive window is configurable. One scenario in which the third GP is applicable may be when a target at a specified distance or distance range needs to be detected. Another scenario is when the perception signal transmission time is long, and the round-trip delay to the target far exceeds the perception symbol time, such as perception detection between satellites, or when a large SCS is used, and the distance corresponding to the symbol length is far less than the detection target distance range. In both cases, it may be necessary to configure a certain time interval after the transmit symbol (Tx) as the start time of the receive time window. In this application, the time interval between the transmit symbol and the start time of the receive window is large, and the resources of this time interval can be used to transmit other signals. In this way, resource utilization can be improved.

[0192] The time interval between the transmission symbol of the third GP and the start time of the corresponding receiving window can be achieved by receiving second indication information, where the second indication information is used to indicate the length of the time interval. This is conducive to the reasonable planning of the transmission of other perception signals or communication signals.

[0193] 4. Repeat transmission interval, number of repeat transmissions, and beam;

[0194] 1. Repeat transmission interval, number of repeated transmissions;

[0195] In the embodiments of the present application, the sensing signal can be sent periodically for sensing detection, or it can be aperiodic, triggered, or requested sensing detection. Whether periodic or aperiodic sensing, sensing signals are typically sent multiple times to accumulate energy, thereby increasing sensing coverage or improving measurement accuracy. Wireless sensing performance can be described in terms of sensing resolution, unambiguous accuracy range, and sensing accuracy. The factors influencing these performance factors can be understood by referring to Tables 2 to 4 below.

[0196] Table 2: Factors affecting wireless sensing resolution

[0197] Table 3: Factors affecting the unambiguous accuracy range of wireless sensing

[0198] Table 4: Factors affecting wireless sensing accuracy

[0199] In Tables 2 through 4 above, c is the speed of light, B is the signal bandwidth, M is the number of repeated sensing signals or sensing format repetitions separated by the receive window (the number of repetitions varies depending on the parameter configuration), Tr is the sensing signal repetition period or interval, Lamda is the wavelength, D is the antenna array aperture, d is the antenna element spacing, and theta represents the beamwidth. SNR is the signal-to-noise ratio or signal-to-interference-plus-noise ratio.

[0200] Wireless sensing resolution indicates the closest proximity between two adjacent objects that can be distinguished by the system. The lower the wireless sensing resolution value, the better the distinction.

[0201] The wireless sensing unambiguous range means that there will be no confusion or ambiguity within this range, such as no more than one measurement quantity will appear for the same target. The larger the unambiguous range, the more conducive it is to target identification.

[0202] Wireless sensing accuracy represents the difference between the measured value and the true value, usually expressed as root mean square error. The smaller the error, the better the performance.

[0203] Combining the three tables in Tables 2 to 4 above, we can find the following contradictions regarding the repeated perceptual symbol spacing Tr:

[0204] Increasing the sensing symbol pulse spacing is beneficial to increasing the maximum unambiguous ranging distance, improving the velocity resolution, and reducing the overhead, but it leads to a decrease in the unambiguous velocity measurement range.

[0205] Reducing the pulse spacing of the sensing symbol will reduce the maximum unambiguous ranging distance and reduce the velocity resolution, but it will help increase the unambiguous velocity measurement range. In addition, reducing the pulse spacing and increasing the number of retransmissions will help improve the SNR, thereby improving the accuracy of ranging and velocity measurements.

[0206] Taking the above points into consideration, the embodiments of the present application configure at least two complementary sets of parameter configurations, each corresponding to a different sensing signal spacing. The first parameter configuration also includes a first repetition transmission interval, and the second parameter configuration also includes a second repetition transmission interval, where the first repetition transmission interval is smaller than the second repetition transmission interval; wherein the first repetition transmission interval is used to indicate the transmission interval of the sensing signal or channel using the first parameter configuration, and the second repetition transmission interval is used to indicate the transmission interval of the sensing signal or channel using the second parameter configuration. The different repetition transmission intervals of the two sets of parameter configurations are beneficial for measuring targets at different distances.

[0207] For example, for a large SCS parameter in a first parameter configuration (capable of covering the shortest distance), a reduced perception signal repetition transmission interval of 1 and / or a repetition count of 1 is configured. For a small SCS parameter in a second parameter configuration (capable of covering the farthest distance), an increased perception signal repetition transmission interval of 2 and / or a repetition count of 2 is configured. The first parameter configuration and the second parameter configuration may be configured separately or in combination.

[0208] For details about the retransmission interval and the number of retransmissions, please refer to Table 5.

[0209] Table 5: Retransmission interval and number of repeated transmissions

[0210] In Table 5, T11 represents the repetition transmission interval in the first parameter configuration for combination 1, R11 represents the number of repetition transmissions in the first parameter configuration for combination 1, T21 represents the repetition transmission interval in the second parameter configuration for combination 1, and R21 represents the number of repetition transmissions in the second parameter configuration for combination 1; similarly, T12 and R12 represent the repetition transmission interval and the number of repetition transmissions in the first parameter configuration for combination 2, and T22 and R22 represent the repetition transmission interval and the number of repetition transmissions in the second parameter configuration for combination 2; T13 and R13 represent the repetition transmission interval and the number of repetition transmissions in the first parameter configuration for combination 3, and T23 and R23 represent the repetition transmission interval and the number of repetition transmissions in the second parameter configuration for combination 3; T14 and R14 represent the repetition transmission interval and the number of repetition transmissions in the first parameter configuration for combination 4, and T24 and R24 represent the repetition transmission interval and the number of repetition transmissions in the second parameter configuration for combination 4.

[0211] In the embodiment of the present application, the second repetition transmission interval may be an integer multiple of the first repetition transmission interval. In this way, the perception signal configured with the first parameter may be interspersed with the second repetition transmission interval for transmission, which is beneficial to improving resource utilization.

[0212] For an understanding of the second repetition interval being an integer multiple of the first repetition interval, refer to Figure 6. As shown in Figure 6, A1, A2, B1, B2, and C1 are perception signals generated using the first parameter configuration, while A3 and B3 are perception signals generated using the second parameter configuration. The intervals between A1 and A2, A2 and B1, B1 and B2, and B2 and C1 are the first repetition interval, and the interval between A3 and B3 is the second repetition interval. As can be seen from Figure 6, B1 and B2 are also transmitted between A3 and B3, meaning that the second repetition interval can include the first repetition interval. Furthermore, Figure 6 also shows that the perception signal generated using the first parameter configuration is retransmitted more times than the perception signal generated using the second parameter configuration: for every two perception signals generated using the first parameter configuration, one perception signal generated using the second parameter configuration is transmitted.

[0213] 2. Repeat transmission interval + beam;

[0214] In the embodiment of the present application, the combination of the repetitive transmission interval and the beam may be:

[0215] 2.1. A perception signal determined by a first parameter configuration is transmitted through a first beam, and a perception signal determined by a second parameter configuration is transmitted through a second beam.

[0216] This combination can be understood with reference to FIG7A . As shown in FIG7A , taking the perception signals A1, A2, A3, B1, B2, B3, and C1 in FIG6 as an example, FIG7A includes a first beam and a second beam. The perception signals A1, A2, B1, B2, and C1 generated using the first parameter configuration are transmitted on the first beam, and the perception signals A3 and B3 generated using the second parameter configuration are transmitted on the second beam.

[0217] 2.2. The perception signal determined by the first parameter configuration and the perception signal determined by the second parameter configuration are transmitted on the first beam in the first time period and on the second beam in the second time period, and the first time period and the second time period do not overlap.

[0218] This combination can be understood with reference to FIG7B . As shown in FIG7B , taking the sensing signals A1, A2, A3, B1, B2, B3, and C1 in FIG6 as an example, FIG7B includes a first beam and a second beam. Sensing signals A1, A2, B1, B2, and C1 generated using the first parameter configuration, and sensing signals A3 and B3 generated using the second parameter configuration, are transmitted on the first beam during a first time period. Sensing signals A1, A2, B1, B2, and C1 generated using the first parameter configuration, and sensing signals A3 and B3 generated using the second parameter configuration, are transmitted on the second beam during a second time period. In this way, by transmitting sensing signals with different parameter configurations on different beams, or by transmitting sensing signals with two different parameter configurations on different beams at different time periods, targets at near and far distances in different directions can be perceived, thereby improving the range of sensing detection.

[0219] 5. Time domain resources and frequency domain resources;

[0220] In an embodiment of the present application, the first parameter configuration further includes information about time domain resources and frequency domain resources used for sensing. The time domain resource information is used to indicate the time domain resources used for transmitting the sensing signal, and the frequency domain resource information is used to indicate the frequency domain resources used for transmitting the sensing signal. In the present application, the parameter configuration may also indicate the time domain resources and frequency domain resources used for sensing, which facilitates rapid determination of the time and frequency resources used for sensing.

[0221] In an embodiment of the present application, the time-frequency resource configuration of the perception signal of the access network device or the terminal device can be derived from the SEMF configuration. Regarding the time domain resources, the time offset of the start transmission time of the perception signal relative to the frame start time can be configured. The frame start time can be frame 0 or a specified frame number.

[0222] The frequency domain resources of the perception signal are determined according to its bandwidth requirements, such as the perception accuracy requirements.

[0223] In addition, for the sidelink, the transmission resources of the sensing signal can be indicated by the sidelink control information (SCI), as shown in Figures 8A and 8B below. The SCI carried by the physical sidelink control channel (PSCCH) in Figure 8A indicates the time-frequency resources of the sensing signal SERS1 and its corresponding time range of Rx window1, as well as the time-frequency resources of the sensing signal SERS2 and its corresponding time range of Rx window2. The SCI of the PSCCH in Figure 8B indicates the time-frequency resources of the sensing signal SERS1 and the start time and length of the corresponding Rx window1. In this way, in the case of contention-based resource allocation in the sidelink, by obtaining the indication information of the SCI of the PSCCH, adjacent terminal devices can avoid using the resources already configured by the terminal device, thereby avoiding mutual interference.

[0224] The above-described process of perception based on at least two sets of parameter configurations can be completed on one frequency band or on two or more frequency bands. The following is an introduction to the multi-band case using the first frequency band and the second frequency band as an example. Multi-band perception can also be understood as multi-carrier perception.

[0225] The above sensing process may adopt a frequency division multiplexing (FDM) method on different frequency bands, while still adopting a TDM method on each frequency band.

[0226] 1. Perform sensing on a first frequency band according to a first parameter configuration; perform sensing on a second frequency band according to a second parameter configuration.

[0227] In this case, the sensing process may be performed on multiple frequency bands, and the parameter configurations on different frequency bands may be different, so that different distances may be detected through different frequency bands.

[0228] 2. Obtain at least one set of parameter configurations for sensing on the second frequency band, where the at least one set of parameter configurations is included in at least two sets of parameter configurations, or the at least one set of parameter configurations is different from the at least two sets of parameter configurations; and perform sensing on the second frequency band according to the at least one set of parameter configurations.

[0229] In this case, one or more sets of parameter configurations can be used for perception on different frequency bands, so that targets at different distances can be measured on each frequency band.

[0230] For the case of multi-band sensing, it may include a case where multiple bands share one power amplifier (PA), or a case where multiple bands do not share one PA.

[0231] 1. Shared PA;

[0232] When a power amplifier (PA) is shared, a third sensing signal transmitted on the first frequency band and a fourth sensing signal transmitted on the second frequency band are transmitted using time division multiplexing, and the receiving window of the third sensing signal overlaps with the receiving window of the fourth sensing signal. This situation can be understood with reference to FIG9A . As shown in FIG9A , third sensing signals A1 and A2 generated using a first parameter configuration are transmitted or received on the first frequency band, and a fourth sensing signal A3 generated using a second parameter configuration is transmitted or received on the second frequency band. Using time division multiplexing, after transmitting symbols of A3 on the second frequency band, transmitting symbols of A1 and receiving symbols of A1 can be transmitted and received on the first frequency band. Subsequently, transmitting symbols of A2 and receiving symbols of A2 can be transmitted and received on the first frequency band. The receiving symbols (i.e., receiving window) of A3 on the second frequency band overlap with the receiving symbols (i.e., receiving window) of A2 on the first frequency band. In this case, because the PA is shared, in order to avoid power limitation when sending the perception signal, the sending time of the third perception signal and the fourth perception signal does not overlap; while the power of the receiving process can be unlimited and the receiving frequency can be orthogonal, so the receiving windows of the third perception signal and the fourth perception signal can overlap.

[0233] Furthermore, the repetition intervals of the fourth sensing signals A3 and B3 generated using the second parameter configuration in the second frequency band may include the repetition intervals of the third sensing signals A1, A2, B1, B2, and C1 generated using the first parameter configuration in the first frequency band. In this multi-band scenario, combined with the retransmission intervals and retransmission times described above, the first parameter configuration may combine the frequencies of different frequency bands with the retransmission intervals and retransmission times, such as: (f1, retransmission interval, retransmission times {T1, R1})(f2, retransmission interval, retransmission times {T2, R2}), where f1 represents the first frequency band and f2 represents the second frequency band. As shown in Figure 9B, the repetition intervals of the fourth sensing signals A3 and B3 transmitted in the second frequency band may be integer multiples of the retransmission intervals of A1, A2, B1, B2, and C1 transmitted in the first frequency band. This configuration effectively utilizes time-frequency resources.

[0234] 2. No shared PA;

[0235] When the PA is not shared, the receiving window of the third perception signal transmitted on the first frequency band overlaps with the receiving window of the fourth perception signal transmitted on the second frequency band, and the sending time of the third perception signal overlaps with the sending time of the fourth perception signal.

[0236] When the PA is not shared, the perception signals transmitted on the first and second frequency bands are not subject to power limitations. Therefore, the transmission times of the third perception signal on the first frequency band and the fourth perception signal on the second frequency band can overlap, and the receiving windows can also overlap. As shown in FIG9C , both Tx and Rx on the first and second frequency bands can overlap. Of course, they can also not overlap. The repetition interval and number of repetitions on the first and second frequency bands can be configured independently.

[0237] The above describes the communication system and sensing method in the embodiments of the present application. The following describes the communication device provided in the embodiments of the present application. Please refer to Figure 10A, which is a schematic diagram of the structure of the communication device in the embodiments of the present application. Communication device 1000 can be used to perform the steps in the embodiments shown in Figures 2 to 9C. For details, please refer to the relevant description of the above method embodiments.

[0238] The communication device 1000 includes a transceiver module 1001 and a processing module 1002. The transceiver module 1001 can implement corresponding communication functions, and the processing module 1002 is used to process data. The transceiver module 1001 can also be called a communication interface or a communication unit.

[0239] Optionally, the communication device 1000 may further include a storage unit, which may be used to store instructions and / or data. The processing module 1002 may read the instructions and / or data in the storage unit so that the communication device implements the aforementioned method embodiment.

[0240] The communication device 1000 can be used to perform the actions described in the method embodiments described above. The communication device 1000 can be a terminal device / access network device, or a component that can be configured in a terminal device / access network device. The transceiver module 1001 is used to perform the reception-related operations described in the method embodiments described above, and the processing module 1002 is used to perform the processing-related operations described in the method embodiments described above.

[0241] Optionally, the transceiver module 1001 may include a sending module and a receiving module. The sending module is used to perform the sending operation in the above method embodiment. The receiving module is used to perform the receiving operation in the above method embodiment.

[0242] It should be noted that the communication device 1000 may include a sending module but not a receiving module. Alternatively, the communication device 1000 may include a receiving module but not a sending module. The specific implementation depends on whether the above solution executed by the communication device 1000 includes a sending action and a receiving action.

[0243] As an example, the communication device 1000 is used to perform the actions in the embodiment shown in FIG. 2 above.

[0244] The transceiver module 1001 is used to obtain at least two sets of parameter configurations, where the at least two sets of parameter configurations include a first parameter configuration for perception and a second parameter configuration for perception, where the first parameter configuration includes a first subcarrier spacing SCS, and the second parameter configuration includes a second SCS, where the first SCS is greater than the second SCS.

[0245] The processing module 1002 is configured to perform perception according to at least two sets of parameter configurations.

[0246] It should be understood that the specific process of each module executing the above corresponding steps has been described in detail in the above method embodiment, and for the sake of brevity, it will not be repeated here.

[0247] The processing module 1002 in the above embodiment can be implemented by at least one processor or processor-related circuits. The transceiver module 1001 can be implemented by a transceiver or transceiver-related circuits. The transceiver module 1001 can also be referred to as a communication unit or communication interface. The storage unit can be implemented by at least one memory.

[0248] The present application also provides another communication device 1000. As shown in FIG10B , the communication device 1000 includes a processor 1010 coupled to a memory 1020. The memory 1020 is configured to store computer programs, instructions, and / or data. The processor 1010 is configured to execute the computer programs, instructions, and / or data stored in the memory 1020, thereby executing the method described in the above method embodiment.

[0249] Optionally, the communication device 1000 includes one or more processors 1010.

[0250] Optionally, as shown in FIG10B , the communication device 1000 may further include a memory 1020 .

[0251] Optionally, the communication device 1000 may include one or more memories 1020 .

[0252] Optionally, the memory 1020 may be integrated with the processor 1010 or provided separately.

[0253] 10B , the communication device 1000 may further include a transceiver 1030 , which is configured to receive and / or transmit signals. For example, the processor 1010 is configured to control the transceiver 1030 to receive and / or transmit signals.

[0254] As a solution, the communication device 1000 is used to implement the operations in the above method embodiments.

[0255] For example, the processor 1010 is used to implement processing-related operations in the above method embodiments, and the transceiver 1030 is used to implement transmission-related operations in the above method embodiments.

[0256] The present application also provides a communication device 1000, which can be a terminal device / access network device or a chip in the terminal device / access network device. The communication device 1000 can be used to perform the operations in the above method embodiments.

[0257] When the communication device 1000 is a communication device, Figure 11 shows a simplified schematic diagram of the structure of the communication device. As shown in Figure 11, the communication device includes a processor, a memory, and a transceiver. The memory can store computer program code, and the transceiver includes a transmitter 1031, a receiver 1032, a radio frequency circuit (not shown), an antenna 1033, and input / output devices (not shown). The processor is primarily used to process communication protocols and communication data, control the communication device, execute software programs, and process software program data. The memory is primarily used to store software programs and data. The radio frequency circuit is primarily used to convert baseband signals into radio frequency signals and process radio frequency signals. The antenna is primarily used to transmit and receive radio frequency signals in the form of electromagnetic waves. Input / output devices, such as a touch screen, display screen, and keyboard, are primarily used to receive data input by the user and output data to the user. It should be noted that some types of communication devices may not have input / output devices.

[0258] When data needs to be sent, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the RF circuit. The RF circuit performs RF processing on the baseband signal and then sends the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the communication device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For ease of explanation, Figure 11 only shows one memory, processor, and transceiver. In an actual communication device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be set independently of the processor or integrated with the processor, and this is not limited in the embodiments of the present application.

[0259] In the embodiment of the present application, the antenna and the radio frequency circuit with transceiver functions may be regarded as the transceiver unit of the communication device, and the processor with processing function may be regarded as the processing unit of the communication device.

[0260] As shown in Figure 11, the communication device includes a processor 1010, a memory 1020, and a transceiver 1030. The processor 1010 may also be referred to as a processing unit, a processing board, a processing module, a processing device, etc., and the transceiver 1030 may also be referred to as a transceiver unit, a transceiver, a transceiver device, etc.

[0261] Alternatively, the device in transceiver 1030 that implements the receiving function may be considered a receiving unit, and the device in transceiver 1030 that implements the transmitting function may be considered a transmitting unit. That is, transceiver 1030 includes a receiver and a transmitter. A transceiver may also be sometimes referred to as a transceiver, a transceiver unit, or a transceiver circuit. A receiver may also be sometimes referred to as a receiver, a receiving unit, or a receiving circuit. A transmitter may also be sometimes referred to as a transmitter, a transmitting unit, or a transmitting circuit.

[0262] For example, in one implementation, the processor 1010 is configured to perform the processing actions in the embodiment shown in FIG2 , and the transceiver 1030 is configured to perform the transceiver actions in FIG2 . For example, the transceiver 1030 is configured to perform the transceiver operation in step 201 in the embodiment shown in FIG2 . The processor 1010 is configured to perform the processing operation in step 202 in the embodiment shown in FIG2 .

[0263] It should be understood that FIG11 is merely an example and not a limitation, and the above-mentioned communication device including the transceiver unit and the processing unit may not rely on the structure shown in FIG11 .

[0264] When the communication device 1000 is a chip, the chip includes a processor, memory, and a transceiver. The transceiver can be an input / output circuit or a communication interface; the processor can be a processing unit, microprocessor, or integrated circuit integrated on the chip. The transmission operation of the communication device in the above method embodiment can be understood as the chip's output, and the reception operation of the communication device in the above method embodiment can be understood as the chip's input.

[0265] An embodiment of the present application also provides a computer-readable storage medium on which computer instructions for implementing the method in the above method embodiment are stored.

[0266] For example, when the computer program is executed by a computer, the computer can implement the method performed in the above method embodiment.

[0267] An embodiment of the present application further provides a computer program product comprising instructions, which, when executed by a computer, enables the computer to implement the method performed in the above method embodiment.

[0268] An embodiment of the present application also provides a communication system, which includes the access network device and terminal device in the above embodiment.

[0269] An embodiment of the present application further provides a chip device, including a processor, configured to call a computer program or computer instruction stored in the memory so that the processor executes the method of the embodiment shown in FIG. 2 to FIG. 9C .

[0270] In a possible implementation, the input of the chip device corresponds to the receiving operation in the embodiment shown in FIG. 2 to FIG. 9C , and the output of the chip device corresponds to the sending operation in the embodiment shown in FIG. 2 to FIG. 9C .

[0271] Optionally, the processor is coupled to the memory via an interface.

[0272] Optionally, the chip device further includes a memory, in which computer programs or computer instructions are stored.

[0273] The processor mentioned in any of the above may be a general-purpose central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the method of the embodiment shown in Figures 2 to 9C above. The memory mentioned in any of the above may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM), etc.

[0274] Those skilled in the art can clearly understand that, for the sake of convenience and brevity of description, the explanation and beneficial effects of the relevant contents in any of the communication devices provided above can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0275] In an embodiment of the present application, a terminal device or access network device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer may include hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also known as main memory). The operating system of the operating system layer may be any one or more computer operating systems that implement service processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer may include applications such as browsers, address books, word processing software, and instant messaging software.

[0276] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0277] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0278] The units described as separate components may or may not be physically separate, and 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 these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0279] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0280] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the part that essentially contributes to the technical solution of the present application or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or an access network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk.

Claims

1. A sensing method, characterized in that: include: Acquire at least two sets of parameter configurations, the at least two sets of parameter configurations include a first parameter configuration for sensing, and a second parameter configuration for sensing, the first parameter configuration includes a first subcarrier spacing SCS, the second parameter configuration includes a second SCS, and the first SCS is greater than the second SCS; The sensing is performed according to the at least two sets of parameter configurations.

2. The method according to claim 1, characterized in that The first SCS is the largest SCS among the SCSs supported by at least one frequency band in an activated state.

3. The method according to claim 1, characterized in that The first SCS is one of the SCSs supported by the frequency band in an inactive state, and the one SCS supported by the frequency band in the inactive state is greater than the SCS supported by the frequency band in an active state.

4. The method according to any one of claims 1 to 3, characterized in that: The first parameter configuration also includes a first cyclic prefix CP, and the second parameter configuration also includes a second CP, the first CP corresponds to the first SCS, the second CP corresponds to the second SCS, and the first CP is smaller than the second CP.

5. The method according to claim 4, characterized in that The first CP is a first product, which is a product of a normal CP corresponding to the first SCS and α, where 0≤α<1.

6. The method according to claim 4, characterized in that The second CP is a second product, and the second product is: the product of a normal CP corresponding to the second SCS and β, or the product of a physical random access channel PRACH CP corresponding to the second SCS and β, β>1.

7. The method according to any one of claims 4 to 6, characterized in that: The first parameter configuration further includes a length of a first receiving window, the length of the first receiving window is not less than a sum of a length of a first symbol and twice a length of the first CP, the length of the first symbol being the reciprocal of the first SCS; or, The length of the first receiving window is N times the length of the first symbol, where N>1.

8. The method according to any one of claims 4 to 7, characterized in that: The second parameter configuration further includes the length of a second receiving window, the length of the second receiving window is not less than the sum of the length of the second symbol and twice the length of the second CP, and the length of the second symbol is the reciprocal of the second SCS; or, The length of the second receiving window is not less than the sum of twice the length of the second CP and the length of (M+1) second symbols, where M is an integer and M≥2.

9. The method according to any one of claims 1 to 8, characterized in that: The length of a transmission symbol of the perception signal obtained by using the second parameter configuration is not greater than the length of a first receiving window, and the first receiving window is a receiving window of the perception signal configured by using the first parameter.

10. The method according to any one of claims 1 to 9, characterized in that: The method further comprises: First indication information is received, where the first indication information is used to indicate a start time of a receiving window of a perception signal configured using the first parameter and / or a start time of a receiving window of a perception signal configured using the second parameter.

11. The method according to any one of claims 1 to 10, characterized in that The first parameter configuration further includes at least one of a first protection interval GP, a second GP, or a third GP, and the second parameter configuration further includes at least one of the first GP, the second GP, or the third GP; wherein, The first GP is a GP between the sensing resource and the communication resource of the same frequency; The second GP is a GP between a sensing resource and a communication resource of different frequencies; or, the second GP is a GP between a first sensing resource and a second sensing resource of different frequencies; The third GP is a time interval between a sending symbol of the perception signal and a start time of a corresponding receiving window, and a length of the time interval is greater than a first threshold.

12. The method according to claim 11, characterized in that The method further comprises: Second indication information is received, where the second indication information is used to indicate a length of the time interval.

13. The method according to claim 11 or 12, characterized in that: The perception resources of the first perception signal within the time range where the third GP is located are used to transmit a communication signal or channel, or the perception resources of the first perception signal within the time range where the third GP is located are used to transmit a second perception signal or channel.

14. The method according to any one of claims 1 to 13, characterized in that: The first parameter configuration also includes a first repetitive transmission interval, and the second parameter configuration also includes a second repetitive transmission interval, and the first repetitive transmission interval is smaller than the second repetitive transmission interval; wherein the first repetitive transmission interval is used to indicate the transmission interval of the perception signal or channel using the first parameter configuration, and the second repetitive transmission interval is used to indicate the transmission interval of the perception signal or channel using the second parameter configuration.

15. The method according to claim 14, characterized in that The second repetition transmission interval is an integer multiple of the first repetition transmission interval.

16. The method according to any one of claims 1 to 15, characterized in that: The perception signal determined by the first parameter configuration is transmitted through a first beam, and the perception signal determined by the second parameter configuration is transmitted through a second beam; or, The perception signal determined by the first parameter configuration and the perception signal determined by the second parameter configuration are transmitted on the first beam in a first time period and on the second beam in a second time period, and the first time period and the second time period do not overlap.

17. The method according to any one of claims 1 to 16, characterized in that: The first parameter configuration also includes information about time domain resources and frequency domain resources used for perception, wherein the information about the time domain resources is used to indicate the time domain resources used to transmit the perception signal, and the information about the frequency domain resources is used to indicate the frequency domain resources for transmitting the perception signal.

18. The method according to any one of claims 1 to 17, characterized in that: The sensing according to the at least two sets of parameter configurations includes: Performing sensing on a first frequency band according to the first parameter configuration; Sensing is performed on a second frequency band according to the second parameter configuration.

19. The method according to any one of claims 1 to 17, characterized in that: The sensing according to the at least two sets of parameter configurations includes: sensing in a first frequency band according to the at least two sets of parameters; The method further comprises: Acquire at least one set of parameter configurations for sensing on a second frequency band, wherein the at least one set of parameter configurations is included in the at least two sets of parameter configurations, or the at least one set of parameter configurations is different from the at least two sets of parameter configurations; Sensing is performed on the second frequency band according to the at least one set of parameter configurations.

20. The method according to claim 18 or 19, characterized in that The third perception signal transmitted on the first frequency band and the fourth perception signal transmitted on the second frequency band are transmitted in a time division multiplexing manner, and a receiving window of the third perception signal overlaps with a receiving window of the fourth perception signal; or, A receiving window of the third perception signal transmitted on the first frequency band overlaps with a receiving window of the fourth perception signal transmitted on the second frequency band, and a sending time of the third perception signal overlaps with a sending time of the fourth perception signal.

21. A communication device, characterized in that: include: Transceiver module and processing module, The transceiver module is used to perform the sending step or the receiving step in the method described in any one of claims 1 to 20 above; The processing module is used to execute the steps except the sending step and the receiving step in the method described in any one of claims 1 to 20.

22. A communication device, characterized in that: comprising at least one processor coupled to the memory; The memory is used to store programs or instructions; The at least one processor is configured to execute the program or instruction so that the apparatus implements the method according to any one of claims 1 to 20.

23. A computer program product comprising program instructions, characterized in that When the program instructions are executed on a computer, the computer is caused to execute the method according to any one of claims 1 to 20.

24. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores program instructions, and when the program instructions are executed, the method according to any one of claims 1 to 20 is executed.

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