Communication method and communication apparatus

Abstract

Provided in the present application are a communication method and a communication apparatus, which can be applied to the field of communications. In the technical solution provided in the present application, a network device indicates a sequence repetition factor N to a terminal, and a terminal device obtains, on the basis of indication information, N sensing reference signals corresponding to the same reference signal sequence. Therefore, the accuracy of a sensing result can be improved, thereby improving the sensing performance.

Description

Communication methods and communication devices

[0001] This application claims priority to Chinese Patent Application No. 202411060119.8, filed with the State Intellectual Property Office of China on August 2, 2024, entitled "Communication Method and Communication Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communications, and more particularly to a communication method and a communication device. Background Technology

[0003] With the rapid development of wireless communication technology, sensing based on wireless communication devices has become a key research focus both domestically and internationally. Specifically, by utilizing the propagation of wireless signals between the transmitter and receiver and analyzing the characteristics of changes in these signals, information about changes in the environment caused by the target can be obtained, enabling sensing in various scenarios.

[0004] Generally speaking, the more accurate the perception results, the better. Therefore, how to improve the accuracy of perception results has become an urgent technical problem to be solved. Summary of the Invention

[0005] The communication method and communication device provided in this application embodiment can improve the accuracy of sensing results.

[0006] In a first aspect, this application provides a communication method, which includes: receiving first information, the first information indicating a sequence repetition factor N, the sequence repetition factor N being used to determine a reference signal sequence corresponding to a sensing reference signal, wherein the reference signal sequences corresponding to N sensing reference signals are the same, and N is an integer greater than 1; and sending a sensing reference signal according to the first information.

[0007] In this communication method, the N sensing reference signals correspond to the same reference signal sequence, that is, the same reference signal sequence is transmitted through these N sensing reference signals. In this way, when these N sensing reference signals are applied to joint sensing, the accuracy of the sensing results can be improved.

[0008] This communication method can be executed by a communication device, or by a chip, chip system, processor, processor system, circuit unit, or circuit system configured for use in a communication device. For ease of description, the following content in this section will use a communication device as an example. As an example, the communication device is a terminal device.

[0009] In some possible designs, the sensing reference signal is the detection reference signal.

[0010] This design reuses the detection reference signal as the sensing reference signal, which can improve the utilization rate of the reference signal and thus improve the utilization rate of communication resources.

[0011] In some possible designs, the communication device executing this communication method is in a sequence skip enabled state.

[0012] In this design, even if the communication device is in the sequence jump enabled state, the sequence repetition factor can still be used to avoid the reference signal sequence corresponding to the N sensing reference signals from jumping, thereby avoiding the performance degradation of the joint sensing results caused by the jump of the reference signal sequence, and thus ensuring or improving the performance of joint sensing.

[0013] In some possible designs, the group number of the reference signal sequence corresponding to the sensing reference signal and the sequence repetition factor N satisfy the following relationship:

[0014] Where u represents the group number of the reference signal sequence, Indicates according to Generate random numbers. Indicates to Round down, "mod" means modulo, n rs Indicates the index of the sensing reference signal. This represents the cell-related parameters, where M is the number of reference signal sequences.

[0015] In this design, based on this relationship, it is possible to achieve the goal of N sensing reference signals corresponding to the same reference signal sequence.

[0016] In some possible designs, the N sensing reference signals form a first sensing reference signal group. During the coherence time, the reference signal sequence corresponding to the first sensing reference signal group is different from the reference signal sequence corresponding to the second sensing reference signal group. The second sensing reference signal group contains N sensing reference signals.

[0017] In this design, different sensing reference signal groups correspond to different reference signal sequences within the coherence time. In other words, by sending different reference signal sequences through different sensing reference signal groups, the sensing performance can be guaranteed or improved in scenarios with random and diverse interference.

[0018] In some possible designs, this communication method further includes receiving second information, which includes an indication of the coherence time. In this design, having the communication peer indicate the coherence time can improve the accuracy and flexibility of the coherence time information.

[0019] In some possible designs, this communication method further includes: determining a first reference signal sequence group number based on the sequence number of the first sensing reference signal among the N sensing reference signals; if the first reference signal sequence group number has been used by a sensing reference signal other than the N sensing reference signals within the coherent time, then the unused second reference signal sequence group number is used as the group number of the reference signal sequence corresponding to the first sensing reference signal.

[0020] This design can realize different reference signal sequences corresponding to different sensing reference signal groups.

[0021] In some possible designs, N sensing reference signals corresponding to the same reference signal sequence are considered adjacent sensing reference signals. One meaning of "adjacent" here includes: among all sensing reference signals transmitted within a certain time period, after numbering these sensing reference signals, these N sensing reference signals are considered to be N numbered adjacent sensing reference signals.

[0022] Secondly, this application provides a communication method, which includes: sending first information, the first information indicating a sequence repetition factor N, the sequence repetition factor N being used to determine a reference signal sequence corresponding to a sensing reference signal, wherein the reference signal sequences corresponding to N sensing reference signals are the same, and N is an integer greater than 1.

[0023] This communication method can be executed by a communication device, or by a chip, chip system, processor, processor system, circuit unit, or circuit system configured for use in a communication device. For ease of description, the following content in this section will use a communication device as an example. As an example, the communication device is a network device.

[0024] In some possible designs, the sensing reference signal is the detection reference signal.

[0025] In one possible design, the communication device executing this communication method is in a sequence skip enabled state.

[0026] In one possible design, the group number of the reference signal sequence corresponding to the sensing reference signal and the sequence repetition factor N satisfy the following relationship:

[0027] Where u represents the group number of the reference signal sequence, Indicates according to Generate random numbers. Indicates to Round down, "mod" means modulo, n rs Indicates the index of the sensing reference signal. This represents the cell-related parameters, and M represents the number of reference signal sequences.

[0028] In some possible designs, the N sensing reference signals form a first sensing reference signal group. During the coherence time, the reference signal sequence corresponding to the first sensing reference signal group is different from the reference signal sequence corresponding to the second sensing reference signal group. The second sensing reference signal group contains N sensing reference signals.

[0029] In one possible design, the communication method further includes sending a second message, the second message including an indication of the coherence time.

[0030] Thirdly, this application provides a communication device. This communication device may include modules corresponding to the methods / operations / steps / actions described in the first aspect or any possible implementation of the first aspect. These modules may be hardware circuits, software, or a combination of hardware circuits and software.

[0031] In one design, the device may include a processing module and a communication module. The communication module is used to perform the sending and receiving actions in the method described in the first aspect or any possible implementation thereof, while the processing module is used to perform the processing actions involved in the method described in the first aspect or any possible implementation thereof.

[0032] In one design, the device can be a terminal device, or a device, module, circuit, or chip configured in the terminal device, or a device that can be used in conjunction with the terminal device.

[0033] In one design, the device can be a network device, or a device, module, circuit, or chip configured in the network device, or a device that can be used in conjunction with the network device.

[0034] Fourthly, this application provides a communication device. This communication device may include modules corresponding to the methods / operations / steps / actions described in the second aspect or any possible implementation thereof.

[0035] In one design, the device may include a processing module and a communication module. The communication module is used to perform the sending and receiving actions in the method described in the second aspect or any possible implementation thereof, while the processing module is used to perform the processing actions involved in the method described in the second aspect or any possible implementation thereof.

[0036] In one design, the device can be a terminal device, or a device, module, circuit, or chip configured in the terminal device, or a device that can be used in conjunction with the terminal device.

[0037] In one design, the device can be a network device, or a device, module, circuit, or chip configured in the network device, or a device that can be used in conjunction with the network device.

[0038] Fifthly, an apparatus is provided, including a processor, wherein instructions, when executed by the processor, cause a method as described in the first aspect or any possible implementation thereof to be implemented.

[0039] Optionally, the device may further include a storage medium that stores the instructions executed by the processor.

[0040] A sixth aspect provides an apparatus including a processor, wherein instructions, when executed by the processor, cause the method as described in the second aspect or any possible implementation thereof to be implemented.

[0041] Optionally, the device may further include a storage medium that stores the instructions executed by the processor.

[0042] In a seventh aspect, a chip is provided, including processing circuitry for running a program or instructions to cause the methods described in the first aspect or any possible implementation thereof to be implemented.

[0043] Optionally, the chip may further include a memory for storing programs or instructions.

[0044] Optionally, the chip may also include the transceiver circuit, or an input / output interface.

[0045] Eighthly, a chip is provided, including processing circuitry for running a program or instructions to implement a method as described in the second aspect or any possible implementation thereof.

[0046] Optionally, the chip may further include a memory for storing programs or instructions.

[0047] Optionally, the chip may also include the transceiver circuit, or an input / output interface.

[0048] A ninth aspect provides a computer-readable storage medium comprising instructions that, when executed by a processor, cause the method as described in the first aspect or any possible implementation thereof to be implemented.

[0049] In a tenth aspect, a computer-readable storage medium is provided, the computer-readable storage medium including instructions that, when executed by a processor, cause the method as described in the second aspect or any possible implementation thereof to be implemented.

[0050] Eleventhly, a computer program product is provided, the computer program product including computer program code or instructions, which, when the computer program code or instructions are run, cause the method as described in the first aspect or any possible implementation thereof to be implemented.

[0051] In a twelfth aspect, a computer program product is provided, the computer program product comprising computer program code or instructions that, when the computer program code or instructions are executed, cause the method as described in the second aspect or any possible implementation thereof to be implemented.

[0052] In a thirteenth aspect, a communication system is provided, comprising: means for performing the first aspect or any possible implementation thereof, and means for performing the second aspect or any possible implementation thereof.

[0053] It is understood that the technical effects of any of the second to thirteenth aspects of this application can be referred to the relevant content in the first aspect, and will not be repeated here. Attached Figure Description

[0054] Figure 1 is an example diagram of a terminal device according to an embodiment of this application;

[0055] Figure 2 is an example diagram of a network device according to an embodiment of this application;

[0056] Figure 3 is a schematic diagram of a communication and sensing integrated application scenario according to an embodiment of this application;

[0057] Figure 4 is an example diagram of a perception mode according to an embodiment of this application;

[0058] Figure 5 is an example diagram of a communication system applicable to the communication method of this application embodiment;

[0059] Figure 6 is an example diagram of a communication method according to an embodiment of this application;

[0060] Figure 7 is a diagram illustrating an example of the transmission of a sensing reference signal according to an embodiment of this application;

[0061] Figure 8 is an example diagram of a communication method according to an embodiment of this application;

[0062] Figure 9 is an example diagram of the transmission of a sensed reference signal within a coherent time according to an embodiment of this application;

[0063] Figure 10 is a schematic diagram of the structure of a communication device according to an embodiment of this application;

[0064] Figure 11 is a schematic diagram of the structure of a communication device according to an embodiment of this application;

[0065] Figure 12 is a flowchart illustrating a terminal device-side communication method according to an embodiment of this application;

[0066] Figure 13 is a flowchart illustrating a terminal device-side communication method according to an embodiment of this application. Detailed Implementation

[0067] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0068] To facilitate a clear description of the technical solutions in the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with essentially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" are not necessarily different.

[0069] It should be noted that, in the embodiments of this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design scheme described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0070] In this application embodiment, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and / or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0071] The technical solution of this application is applicable to wireless communication systems with AI training / inference capabilities, such as: 5th generation (5G) or new radio (NR) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, wireless local area network (WLAN) systems, satellite communication systems, future mobile communication systems, or integrated systems of multiple systems, etc.

[0072] The technical solutions provided in this application can also be applied to device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), and Internet of Things (IoT) communication systems or other communication systems.

[0073] In a communication system, one network element can send signals to or receive signals from another network element. These signals can include information, signaling, or data. The term "network element" can also be replaced by an entity, network entity, device, communication equipment, communication module, node, communication node, etc. This application uses a device as an example. For instance, a communication system can include at least one terminal device and at least one network device. The network device can send downlink signals to the terminal device, and / or the terminal device can send uplink signals to the network device.

[0074] In the embodiments of this application, the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user apparatus.

[0075] Terminal devices can be devices that provide voice / data, such as handheld devices with wireless connectivity, in-vehicle devices, etc. Currently, examples of terminals include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving vehicles, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, wearable devices, terminal devices in 5G networks, or future public land mobile communication networks. Terminal devices in a network (PLMN), etc., are not limited to this in the embodiments of this application.

[0076] By way of example and not limitation, in this embodiment, the terminal device can also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0077] In this embodiment, the device for implementing the functions of the terminal device can be the terminal device itself, or it can be any device capable of supporting the terminal device in implementing those functions, such as a chip system. This device can be installed in or used in conjunction with the terminal device. In this embodiment, the chip system can consist of chips or include chips and other discrete components. This embodiment only uses the terminal device as an example to illustrate the device for implementing the functions of the terminal device, and does not constitute a limitation on the solutions of this embodiment.

[0078] Figure 1 is an example diagram of a terminal device according to an embodiment of this application. The terminal device 100 includes a processor, a memory, a control circuit, an antenna, and an input / output device.

[0079] The processor is mainly used to process communication protocols and communication data, control the entire terminal, execute software programs, and process the data of the software programs, such as to support the terminal in performing the actions described in the above method embodiments.

[0080] The processor is mainly used to process communication protocols and communication data, control the entire terminal, execute software programs, and process the data of the software programs, such as to support the terminal in performing the actions described in the above method embodiments.

[0081] Memory is mainly used to store software programs and data.

[0082] The control circuit is mainly used for the conversion between baseband signals and radio frequency signals, as well as the processing of radio frequency signals.

[0083] The control circuit and antenna together can also be called a transceiver, which is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves.

[0084] Input / output devices, such as touchscreens, displays, and keyboards, are primarily used to receive user input data and output data to the user.

[0085] When the terminal is powered on, the processor can read the software program from the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When it is necessary to transmit data wirelessly, the processor performs baseband processing on the data to be transmitted and outputs the baseband signal to the radio frequency (RF) circuit. The RF circuit then performs RF processing on the baseband signal and transmits the RF signal outward in the form of electromagnetic waves through the antenna.

[0086] When data is sent to the terminal, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

[0087] Those skilled in the art will understand that, for ease of explanation, Figure 1 only shows one memory and one processor. In actual terminal devices, multiple processors and memories may exist. Memory may also be referred to as storage medium or storage device, etc., and the embodiments of this application do not impose such limitations.

[0088] For example, a processor may include a baseband processor and a central processing unit (CPU). The baseband processor is mainly used to process communication protocols and communication data, while the CPU is mainly used to control the entire terminal, execute software programs, and process the data of the software programs.

[0089] The processor shown in the figure integrates the functions of a baseband processor and a central processing unit (CPU). Those skilled in the art will understand that the baseband processor and CPU can also be independent processors interconnected via technologies such as buses. It will also be understood that a terminal can include multiple baseband processors to adapt to different network standards, and multiple CPUs to enhance its processing capabilities. The various components of the terminal can be connected via various buses. The baseband processor can also be described as a baseband processing circuit or a baseband processing chip. Similarly, the CPU can be described as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data can be built into the processor or stored as software programs in a storage unit, with the processor executing the software programs to implement the baseband processing function.

[0090] For example, in the embodiments of this application, the antenna and control circuit with transceiver function can be regarded as the transceiver unit 110 of the terminal 100, and the processor with processing function can be regarded as the processing unit 120 of the terminal 100.

[0091] As shown in Figure 1, the terminal 100 includes a transceiver unit 110 and a processing unit 120. The transceiver unit can also be referred to as a transceiver, transceiver device, or transceiver unit.

[0092] Optionally, the device in transceiver unit 110 used to implement the receiving function can be regarded as a receiving unit, and the device in transceiver unit 110 used to implement the transmitting function can be regarded as a transmitting unit. That is, transceiver unit 110 includes a receiving unit and a transmitting unit. For example, the receiving unit can also be called a receiver, receiver circuit, etc., and the transmitting unit can be called a transmitter, transmitter, or transmitting circuit, etc.

[0093] In some implementations, the transceiver unit 110 is used to implement the sending and receiving operations performed by the terminal device in the embodiments of FIG6 or FIG8, and the processing unit 120 is used to implement the processing-related operations performed by the terminal device in FIG6 or FIG8, such as determination and calculation operations.

[0094] The network device in this application embodiment can be a device used to communicate with a terminal device. This network device can also be called an access network device or a wireless access network device, such as a base station. In this application embodiment, the network device can refer to a radio access network (RAN) node (or device) that connects the terminal device to the wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master station, auxiliary station, motor slide retainer (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), radio unit (RU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or similar entities, or combinations thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. A base station can also be a mobile switching center, equipment performing base station functions in D2D, V2X, and M2M communications, network equipment in future communication networks, or equipment performing base station functions in future communication systems. A base station can support networks using the same or different access technologies. Optionally, a RAN node can also be a server, wearable device, vehicle, or in-vehicle equipment. For example, the access network equipment in vehicle-to-everything (V2X) technology can be a roadside unit (RSU). The embodiments of this application do not limit the specific technologies or equipment forms used in the network equipment.

[0095] Network equipment can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of that mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0096] In this embodiment, the apparatus for implementing the functions of a network device can be a network device itself; it can also be an apparatus capable of supporting the network device in implementing those functions, such as a chip system, hardware circuit, software module, or a hardware circuit plus a software module. This apparatus can be installed in the network device or used in conjunction with the network device. In this embodiment, the example of a network device being used to implement the functions of a network device is provided only and does not constitute a limitation on the solutions described in this embodiment.

[0097] Network devices and / or terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located. Furthermore, terminal devices and network devices can be hardware devices, or software functions running on dedicated hardware or general-purpose hardware, such as virtualization functions instantiated on a platform (e.g., a cloud platform), or entities that include dedicated or general-purpose hardware devices and software functions. This application does not limit the specific form of the terminal devices and network devices.

[0098] Figure 2 is an example diagram of a network device 200 according to an embodiment of this application. As shown in Figure 2, the network device 200 may include one or more DU 210s and one or more CU 220s. The CU 220 can communicate with the NG core (Next Generation Core, NC).

[0099] The DU 210 may include at least one antenna 211, at least one radio frequency unit 212, at least one processor 213, and at least one memory 214. The DU 210 is mainly used for transmitting and receiving radio frequency signals, converting radio frequency signals to baseband signals, and performing some baseband processing.

[0100] CU 220 may include at least one processor 222 and at least one memory 221. CU 220 and DU 210 may communicate via an interface, wherein the control plane (CP) interface may be Fs-C, such as F1-C, and the user plane (UP) interface may be Fs-U, such as F1-U.

[0101] The CU 220 is mainly used for baseband processing and controlling the network device 200. The DU 210 and CU 220 can be physically installed together or separately, i.e., a distributed base station. The CU 220 is the control center of the network device 200, also known as a processing unit, and is mainly used to complete baseband processing functions. For example, the CU 220 can be used to control the network device 200 to execute the operation procedures related to the network device in the method embodiment.

[0102] Specifically, baseband processing on the CU and DU can be divided according to the protocol layers of the wireless network. For example, the functions of the Packet Data Convergence Protocol (PDCP) layer and above are set in the CU, while the functions of protocol layers below PDCP, such as the Radio Link Control (RLC) layer and the Medium Access Control (MAC) layer, are set in the DU. Alternatively, the CU may implement the functions of the RRC and PDCP layers, while the DU may implement the functions of the RLC, MAC, and PHY layers.

[0103] Alternatively, the network device 200 may include one or more radio frequency units (RUs), one or more DUs, and one or more CUs. A DU may include at least one processor 213 and at least one memory 214, an RU may include at least one antenna 211 and at least one radio frequency unit 212, and a CU may include at least one processor 222 and at least one memory 221.

[0104] In one example, the CU 220 may consist of one or more boards. Multiple boards may jointly support a single access indication radio access network (such as a 5G network), or they may support radio access networks with different access standards (such as LTE networks, 5G networks, or other networks).

[0105] The memory 221 and processor 222 can serve one or more single boards. That is, each single board can have its own memory and processor, or multiple single boards can share the same memory and processor. In addition, each single board can also have the necessary circuitry.

[0106] The DU 210 can be composed of one or more single boards. Multiple single boards can jointly support a wireless access network with a single access indication (such as a 5G network), or they can support wireless access networks with different access standards (such as LTE networks, 5G networks, or other networks).

[0107] The memory 214 and processor 213 can serve one or more single boards. That is, each single board can have its own memory and processor, or multiple single boards can share the same memory and processor. In addition, each single board can also have the necessary circuitry.

[0108] In some implementations, the CU is used to implement the sending and receiving operations performed by the network device in the embodiments of Figure 6 or Figure 8, and the DU is used to implement the processing-related operations performed by the network device in Figure 6 or Figure 8, such as determination and calculation operations.

[0109] Figure 3 is a schematic diagram of a communication sensing integrated application scenario according to an embodiment of this application. As shown in Figure 3, application scenario 300 includes at least one network device, such as network device 310 shown in Figure 3; the network device can transmit and receive information through an antenna and a radio frequency unit.

[0110] In some application scenarios, at least one terminal device is also included, such as terminal device 320 shown in Figure 3. Terminal device 320 and network device 310 can communicate wirelessly via a link. The various communication devices in this application scenario, for example, network device 310 and terminal device 320, can communicate using multi-antenna technology.

[0111] In some application scenarios, this also includes the sensed object. For example, the sensed object 330 shown in Figure 3. The sensed object 330 can reflect the reference signal sent by the network device 310, and the network device 310 can receive the reference signal reflected by the sensed object 330 and process the received reference signal.

[0112] In some application scenarios, at least one terminal device and at least one sensed object are also included. For example, terminal device 320 and sensed object 330 are shown in Figure 3. Sensed object 330 can reflect reference signals sent by network device 310, or reference signals sent by terminal device 320. Network device 310 can receive the reference signals reflected by sensed object 330 and process the received reflected reference signals, or terminal device 320 can receive the reference signals reflected by sensed object 330 and process the received reflected reference signals.

[0113] Figure 4 is an example diagram of a sensing mode according to an embodiment of this application. As shown in Figure 4, the sensing scene includes at least one communication device, such as network device 410 or terminal device 420 in Figure 4; the sensing scene also includes at least one sensed object, such as sensed object 430 shown in Figure 4.

[0114] As shown in Figure 4(a), the network device 410 sends a reference signal, which is reflected by the sensed object 430 and received by the network device 410 itself.

[0115] As shown in Figure 4(b), the terminal device 420 sends a reference signal, which is reflected by the sensed object 430 and received by the terminal device 420 itself.

[0116] As shown in Figure 4(c), network device 410 sends a reference signal, which is reflected by the perceived object 430 and received by another network device 410 in the scene.

[0117] As shown in Figure 4(d), the terminal device 420 sends a reference signal, which is reflected by the perceived object 430 and received by another terminal device 420 in the scene.

[0118] As shown in Figure 4(e), network device 410 sends a reference signal, which is reflected by the sensed object 430 and received by terminal device 420.

[0119] As shown in Figure 4(f), the terminal device 420 sends a reference signal, which is reflected by the sensed object 430 and received by the network device 410.

[0120] Figure 5 is an example diagram of a communication system applicable to the communication method of this application embodiment. As shown in Figure 5, the communication system 500 may include at least one network device, such as network device 510 shown in Figure 5; the communication system 500 may also include at least one terminal device, such as terminal device 520 shown in Figure 5. Network device 510 and terminal device 520 can communicate via a wireless link. The communication devices in this communication system, for example, network device 510 and terminal device 520, can communicate via multi-antenna technology.

[0121] In practical applications, this communication system may include multiple network devices or multiple terminal devices. This application does not limit the number of network devices and terminal devices included in the communication system.

[0122] The transmitting end transmits wireless communication signals; during the propagation process, the wireless communication signals are affected by the environment, causing changes in signal amplitude, phase and other characteristics; after receiving the wireless communication signals whose propagation has been affected by the environment, the receiving end can extract target feature information in the environment through signal processing, thereby realizing wireless sensing.

[0123] As an example, the sending end is the terminal device, the receiving end is the network device, and the wireless communication signal is the reference signal.

[0124] To improve the accuracy and performance of sensing results, this application proposes a novel communication method. In this method, every N sensing reference signals are grouped together, and the same set of sensing reference signals is generated using the same reference signal sequence.

[0125] In some implementations, different sets of sensing reference signals are generated using different reference signal sequences.

[0126] In some implementations, different groups of sensing reference signals are generated using different reference signal sequences during the coherence time, while outside the coherence time, different groups of sensing reference signals can be generated using the same or different reference signal sequences.

[0127] In some implementations, N can be indicated by the network device to the terminal device.

[0128] In some implementations, N equals the number of analog beams supported by the network device.

[0129] Figure 6 is an example diagram of a communication method according to an embodiment of this application. As shown in Figure 6, this communication method may include steps S610 and S620.

[0130] S610, the network device sends first information, which indicates a sequence repetition factor N. The sequence repetition factor N is used to determine the reference signal sequence corresponding to the sensing reference signal, wherein the reference signal sequences corresponding to the N sensing reference signals determined based on the sequence repetition factor N are the same, and N is an integer greater than 1. Correspondingly, the terminal device receives the first information.

[0131] It is understood that in this application, the sequence repeat factor is merely a naming example for N and does not constitute a functional limitation on N.

[0132] In this application, the reference signal sequence corresponding to the sensing reference signal can be understood as: the reference signal sequence carried in the sensing reference signal, or the sensing reference signal generated based on the reference signal sequence.

[0133] In some implementations, the first information is transmitted via radio resource control (RRC), medium access control element (MAC CE), or downlink control information (DCI).

[0134] In some implementations, N can be understood as the reference signal sequence group number used to determine the sensing reference signal. In this implementation, the reference signal sequences corresponding to the N sensing reference signals determined based on N are the same, which can be understood as: the reference signal sequence group numbers corresponding to the N sensing reference signals determined based on N are the same. In this application, the reference signal sequence group number can be called the reference signal sequence index.

[0135] In some implementations, the reference signal sequences corresponding to the N sensing reference signals determined based on N are the same. This can be understood as: the N sensing reference signals determined based on N correspond to the same reference signal sequence, or the reference signal sequence group number corresponding to the N sensing reference signals determined based on N is the same.

[0136] In some implementations, the sensing reference signal is a sound reference signal (SRS).

[0137] In some implementations, these N sensing reference signals are N adjacent sensing reference signals. For example, these N sensing reference signals are N sensing reference signals with adjacent or consecutive sequence numbers. In this application, the sequence number of the sensing reference signal can be referred to as the index or number of the sensing reference signal.

[0138] In some implementations, the network device is an analog beamforming architecture, or a hybrid beamforming (HBF) architecture.

[0139] When a network device uses an analog beamforming architecture or an HBF architecture, in some implementations, N equals the number of analog beams corresponding to the network device.

[0140] S620, the terminal device sends a sensing reference signal based on the first information. Correspondingly, the network device receives the sensing reference signal.

[0141] For example, the terminal device determines the corresponding reference signal sequence for N sensing reference signals based on the first information, and the corresponding reference signal sequences determined for the N sensing reference signals are the same.

[0142] For example, a corresponding reference signal sequence group number is determined for each sensing reference signal based on N, wherein the reference signal sequence group numbers determined for N sensing reference signals are equal, thereby achieving the same reference signal sequence for these N sensing reference signals.

[0143] In some implementations, the reference signal sequence group number corresponding to the sensing reference signal is generated based on N and the index of the sensing reference signal.

[0144] In some implementations, N, the index of the sensing reference signal, and the group number of the reference signal sequence satisfy the following relationship:

[0145] Where u represents the reference signal group number, Indicates according to Generate random numbers. Indicates to Round down, "mod" means modulo, n rsIndicates the index of the sensing reference signal. This represents the cell-related parameters, where M is the number of reference signal sequences.

[0146] For example, the reference signal sequence group number corresponding to the sensing reference signal can be calculated based on N and the index of the sensing reference signal using the above relationship.

[0147] For example, the cell-related parameter is the cell identifier (ID).

[0148] For example, M is 30.

[0149] It is understood that the above relation is merely an example, and any modifications made to the above relation that do not affect its essential function should also be included within the scope of protection of this application. For example, the floor function in the above relation can be replaced with the floor function, and the right-hand side of the above relation can be added to, subtracted from, multiplied by, or divided by a numerical value.

[0150] In this step, after the terminal device determines the reference signal sequence group number corresponding to the sensing reference signal based on N, it can generate the sensing reference signal based on the reference signal sequence identified by the reference signal group number and send the sensing reference signal.

[0151] In some implementations of this embodiment, the network device enables sequence hopping.

[0152] In some implementations, this communication method also includes: the network device sending a message to the terminal device indicating that sequence hopping has been enabled.

[0153] The communication method in this embodiment can achieve the following technical effects: the reference signal sequence carried on each N sensing reference signals is the same, thereby improving the accuracy of the joint sensing results when performing joint sensing based on each N sensing reference signals, and thus improving the performance of joint sensing.

[0154] Figure 7 is an example diagram of the transmission of a sensing reference signal according to an embodiment of this application. In Figure 7, a diagonally filled cell represents a sensing reference signal, and a blank cell represents no signal or other types of signal. 1, 2, 3, 4, 5, 6, 7, and 8 are the serial numbers of the sensing reference signals.

[0155] Taking N=2 as an example, the method in this embodiment can achieve the following: Sensing reference signal 1 and sensing reference signal 2 correspond to the same reference signal sequence, denoted as sequence 1; sensing reference signal 3 and sensing reference signal 4 correspond to the same reference signal sequence, denoted as sequence 2; sensing reference signal 5 and sensing reference signal 6 correspond to the same reference signal sequence, denoted as sequence 3; sensing reference signal 7 and sensing reference signal 8 correspond to the same reference signal sequence, denoted as sequence 4.

[0156] N equals the number of analog beams, meaning the network device uses two analog beams to alternately receive the sensing reference signal. For ease of description, these two beams are denoted as Analog Beam 1 and Analog Beam 2, respectively.

[0157] As an example, the network device uses analog beam 1 to receive sensing reference signals numbered 1, 3, 5, and 7, and uses analog beam 2 to receive sensing reference signals numbered 2, 4, 6, and 8.

[0158] In this way, when the network device performs joint sensing of the sensing reference signals received from the two analog beams, the sensing reference signal 1 received by analog beam 1 and the sensing reference signal 2 received by analog beam 2 can be jointly processed, the sensing reference signal 3 received by analog beam 1 and the sensing reference signal 4 received by analog beam 2 can be jointly processed, the sensing reference signal 5 received by analog beam 1 and the sensing reference signal 6 received by analog beam 2 can be jointly processed, and the sensing reference signal 7 received by analog beam 1 and the sensing reference signal 8 received by analog beam 2 can be jointly processed.

[0159] Because sensing reference signal 1 and sensing reference signal 2 correspond to the same reference signal sequence, sensing reference signal 3 and sensing reference signal 4 correspond to the same reference signal sequence, sensing reference signal 5 and sensing reference signal 6 correspond to the same reference signal sequence, and sensing reference signal 7 and sensing reference signal 8 correspond to the same reference signal sequence, the communication method in this embodiment can guarantee sensing performance while ensuring the sequence skipping mechanism.

[0160] Figure 8 is an example diagram of a communication method according to an embodiment of this application. As shown in Figure 8, this communication method may include S810, S820 and S830.

[0161] S810, the network device sends first information, which indicates a sequence repetition factor N. The sequence repetition factor N is used to determine the reference signal sequence corresponding to the sensing reference signal, wherein the reference signal sequences corresponding to the N sensing reference signals determined based on the sequence repetition factor N are the same, and N is an integer greater than 1. Correspondingly, the terminal device receives the first information.

[0162] This step can be referred to in S610, and will not be repeated here.

[0163] In S820, the network device sends a second message indicating the coherence time. Correspondingly, the terminal device receives the coherence time.

[0164] In some implementations, the second message is sent via RRC, MAC CE, or DCI.

[0165] S830, the terminal device sends a sensing reference signal based on the first information and the second information, wherein the coherent time period includes a first sensing reference signal group and a second sensing reference signal group, the first sensing reference signal group includes N sensing reference signals, the second sensing reference signal group includes N sensing reference signals, the first sensing reference signal group corresponds to the same reference signal sequence, the second sensing reference signal group corresponds to the same reference signal sequence, and the first sensing reference signal group and the second sensing reference signal group correspond to different reference signal sequences.

[0166] It is understood that the sensing reference signal group in this embodiment is a logical concept, and the scheme of this embodiment may not necessarily involve the operation of grouping the sensing reference signals. In this embodiment, N sensing reference signals form a group.

[0167] In this step, the sensing reference signal group corresponds to the same reference signal sequence, which can be understood as: N sensing reference signals in this group correspond to the same reference signal sequence.

[0168] In this step, the N sensing reference signals correspond to the same reference signal sequence. The relevant meanings can be found in the relevant content of the embodiment in Figure 6, and will not be repeated here.

[0169] In some implementations, the first sensing reference signal group and the second sensing reference signal group correspond to different reference signal sequences, which can be understood as: different groups of sensing reference signals correspond to different reference signal sequence group numbers.

[0170] In this embodiment, only different sensing reference signal groups within the coherent time period are required to correspond to different reference signal sequences. While ensuring the diversity of sensing reference signals and thus improving sensing performance, the following problem can be avoided: due to an excessive number of sensing reference signal groups, such as redundant reference signal sequences, different sensing reference signal groups may have to correspond to the same reference signal sequence. In other words, the solution in this embodiment can ensure that different sensing reference signal groups can correspond to different reference signal sequences.

[0171] In some implementations of this embodiment, for each sensing reference signal within the coherent time, after determining the reference signal sequence group number based on the number of the sensing reference signal and N as the sensing reference signal, the following steps are performed: (1) Determine whether the reference signal sequence group number has been used by the sensing reference signal in other sensing reference signal groups within the same coherent time. If it has not been used, proceed to step (2). If it has been used, proceed to step (3); (2) The reference signal sequence group number is used as the reference signal sequence group number corresponding to the sensing reference signal; (3) Add a value to the reference signal sequence group number to obtain whether the new reference signal sequence group number has been used, and then repeat step (1).

[0172] As an example, the value added in the above implementation is 1.

[0173] This implementation helps ensure that different sensing reference signal groups can correspond to different reference signal sequences within the coherent time.

[0174] Figure 9 is an example diagram of the transmission of a sensed reference signal within a coherent time according to an embodiment of this application.

[0175] As shown in Figure 9, during the first coherent time interval, the sensing reference signal 1 and sensing reference signal 2 correspond to sequence 1; the sensing reference signal 3 and sensing reference signal 4 correspond to sequence 2; the sensing reference signal 5 and sensing reference signal 6 correspond to sequence 3; and the sensing reference signal 7 and sensing reference signal 8 correspond to sequence 4.

[0176] During the second coherent time interval, sensing reference signal 9 and sensing reference signal 10 can still correspond to sequence 1; sensing reference signal 11 and sensing reference signal 12 can still correspond to sequence 2; sensing reference signal 13 and sensing reference signal 14 correspond to sequence 5; and sensing reference signal 15 and sensing reference signal 16 correspond to sequence 6.

[0177] Figure 10 is a schematic diagram of the structure of a communication device according to an embodiment of this application. As shown in Figure 10, the communication device 1000 may include a processing module 1010 and a communication module 1020.

[0178] As a first example, device 1000 can be used to implement the communication method implemented by the first device in the embodiment shown in FIG6 or FIG8. For example, processing module 1010 is used to implement processing-related steps performed by the network device in the embodiment shown in FIG6 or FIG8, and communication module 1020 is used to implement sending and / or receiving steps performed by the network device in the embodiment shown in FIG6 or FIG8.

[0179] As a second example, device 1000 can be used to implement the communication method implemented by the terminal device in the embodiments shown in FIG6 or FIG8. For example, processing module 1010 is used to implement the processing-related steps performed by the terminal device in the embodiments shown in FIG6 or FIG8, and communication module 1020 is used to implement the sending and / or receiving steps performed by the terminal device in the embodiments shown in FIG6 or FIG8.

[0180] Figure 11 is a schematic diagram of a communication device provided in another embodiment of this application. As shown in Figure 11, the communication device 1100 includes a processor 1110 and a communication circuit 1120. The processor 1110 and the communication circuit 1120 are coupled to each other. It is understood that the communication circuit 1120 can be a transceiver or an input / output interface. Optionally, the device 1100 may also include a memory 1130 for storing instructions executed by the processor 1110, or storing input data required by the processor 1110 to execute instructions, or storing data generated after the processor 1110 executes instructions. It is understood that the memory 1130 can be located outside the processor 1110, or inside the processor 1110.

[0181] As an example, processor 1110 is used to implement the functions of the processing module 1010 described above, and communication circuit 1120 is used to implement the functions of the communication module 1020 described above.

[0182] The communication device 1100 can be a network device or a chip used in a network device.

[0183] It is understandable that when the communication device 1100 is a network device, the communication circuit 1120 can be a transceiver. When the communication device 1100 is a chip, the communication circuit 1120 can be an input / output interface.

[0184] The communication device 1100 can be a terminal device or a chip used in a terminal device.

[0185] It is understandable that when the communication device 1100 is a network device, the communication circuit 1120 can be a transceiver. When the communication device 1100 is a chip, the communication circuit 1120 can be an input / output interface.

[0186] Figure 12 is a flowchart illustrating a terminal device-side communication method according to an embodiment of this application. As shown in Figure 12, this communication method may include steps S1210, S1220, S1230, and S1240.

[0187] S1210, the terminal device receives first information sent from the network device through a transceiver. The first information indicates a sequence repetition factor N. The sequence repetition factor N is used to determine the reference signal sequence corresponding to the sensing reference signal. The reference signal sequences corresponding to the N sensing reference signals determined based on the sequence repetition factor N are the same, and N is an integer greater than 1.

[0188] S1220, the terminal device processor determines the group number of the reference signal sequence according to the predefined relationship between the sequence repetition factor N indicated by the first information and the group number of the reference signal sequence.

[0189] This step can be referred to in S620, and will not be repeated here.

[0190] S1230, the terminal device processor determines the reference signal sequence to be transmitted based on the group number of the reference signal sequence and generates the baseband signal.

[0191] In some possible implementations, the determination method is that the terminal device processor reads the corresponding sequence from the terminal device memory according to the group number of the reference signal sequence, or the terminal device processor generates the sequence according to the group number and a predefined formula.

[0192] S1240, the terminal device sends a reference signal through the transceiver.

[0193] Figure 13 is a flowchart illustrating a terminal device-side communication method according to an embodiment of this application. As shown in Figure 13, this communication method may include steps S1310, S1320, S1330, S1340, and S1350.

[0194] S1310, the network device transmits first information through an antenna and a radio frequency unit. The first information indicates a sequence repetition factor N. The sequence repetition factor N is used to determine the reference signal sequence corresponding to the sensing reference signal. The reference signal sequences corresponding to the N sensing reference signals determined based on the sequence repetition factor N are the same, and N is an integer greater than 1.

[0195] S1320, the network device receives reference signals sent by the terminal device through an antenna and a radio frequency unit.

[0196] S1330, the network device processor determines the group number of the reference signal sequence according to the predefined relationship between the sequence repetition factor N indicated by the first information and the group number of the reference signal sequence.

[0197] S1340, the network device processor determines the reference signal sequence to be transmitted based on the group number of the reference signal sequence.

[0198] In some implementations, the determination method involves the network device processor reading the corresponding sequence from the network device memory based on the group number of the reference signal sequence, or the network device processor generating the sequence based on the group number and a predefined formula.

[0199] S1350, the network device processor processes the received reference signal based on the generated reference signal.

[0200] In some implementations, the network device processor is processor 213 or processor 222 as shown in Figure 2.

[0201] In some implementations, the network device memory is memory 214 or memory 221 in Figure 2.

[0202] In some embodiments of this application, a computer program product is also provided. When the computer program product is run on a processor, it can implement the method implemented by the network device in any of the above embodiments, or it can implement the method implemented by the terminal device in any of the above method embodiments.

[0203] In some embodiments of this application, a computer-readable storage medium is also provided, which contains computer instructions that, when executed on a processor, can implement the methods implemented by the network device in any of the above embodiments, or can implement the methods implemented by the terminal device in any of the above method embodiments.

[0204] In some embodiments of this application, a communication system is also provided, which can implement the methods implemented by network devices and terminal devices in any of the above embodiments.

[0205] It is understood that the processor in the embodiments of this application may be any of the following devices or all or part of the circuitry used for processing functions: a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. A general-purpose processor may be a microprocessor or any conventional processor.

[0206] The method steps in the embodiments of this application can be implemented in hardware or by a processor executing software instructions. The software instructions can consist of corresponding software modules, which can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disks, portable hard disks, CD-ROMs, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and storage medium can reside in an ASIC. Additionally, the ASIC can reside in a network device or terminal device. Alternatively, the processor and storage medium can exist as discrete components in the network device or terminal device.

[0207] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are performed entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable device. The computer program or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video optical disc; or it can be a semiconductor medium, such as a solid-state drive.

[0208] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0209] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

Claims

1. A communication method characterized by comprising: The method comprises: receiving first information from a network device, the first information indicating a sequence repetition factor N, the sequence repetition factor N being used to determine a reference signal sequence corresponding to a sensing reference signal, wherein N sensing reference signals correspond to a same reference signal sequence, and N is an integer greater than 1; transmitting a sensing reference signal according to the first information.

2. The method of claim 1, wherein, The sensing reference signal is a sounding reference signal.

3. The method according to claim 1 or 2, characterized in that, N is equal to a number of analog beams supported by the network device.

4. The method according to any one of claims 1 to 3, characterized in that, The reference signal sequence group number corresponding to the perception reference signal satisfies the following relationship with N: wherein u denotes the reference signal sequence group number, indicates according to generating a random number, indicates that the floor, "mod" denotes modulo, n rs denotes a sequence number of the perception reference signal, M represents a cell-related parameter, and M is a number of reference signal sequences.

5. The method according to any one of claims 1 to 4, characterized in that, A first sensing reference signal group and a second sensing reference signal group are contained in a coherence time, the first sensing reference signal group containing N sensing reference signals, the second sensing reference signal group containing N sensing reference signals, the first sensing reference signal group corresponding to a same reference signal sequence, the second sensing reference signal group corresponding to a same reference signal sequence, and the first sensing reference signal group and the second sensing reference signal group corresponding to different reference signal sequences.

6. The method of claim 5, wherein, The method further comprises: receiving second information, the second information indicating the coherence time.

7. The method according to claim 5 or 6, characterized in that, The method further comprises: determining a first reference signal sequence group number according to a sequence number of a sensing reference signal in the first sensing reference signal group; if the first reference signal sequence group number has been used by other sensing reference signal groups in the coherence time, using a second reference signal sequence group number as a reference signal sequence group number corresponding to the sensing reference signal in the first sensing reference signal group.

8. A communication method characterized by comprising: The method comprises: transmitting first information, the first information indicating a sequence repetition factor N, the sequence repetition factor N being used to determine a reference signal sequence corresponding to a sensing reference signal, wherein N sensing reference signals correspond to a same reference signal sequence, and N is an integer greater than 1; receiving a sensing reference signal based on the first information.

9. The method of claim 8, wherein, The sensing reference signal is a sounding reference signal.

10. The method according to claim 8 or 9, characterized in that, N is equal to a number of analog beams supported by the network device.

11. The method according to any one of claims 8 to 10, characterized in that, The reference signal sequence group number corresponding to the perception reference signal satisfies the following relationship with N: wherein u denotes the reference signal sequence group number, denotes according to generating a random number, indicates that the floor, "mod" denotes modulo, n rs denotes a sequence number of the perception reference signal, M represents a cell-related parameter, and M is a number of reference signal sequences.

12. The method according to any one of claims 8 to 11, characterized in that, A first sensing reference signal group and a second sensing reference signal group are contained in a coherence time, the first sensing reference signal group containing N sensing reference signals, the second sensing reference signal group containing N sensing reference signals, the first sensing reference signal group corresponding to a same reference signal sequence, the second sensing reference signal group corresponding to a same reference signal sequence, and the first sensing reference signal group and the second sensing reference signal group corresponding to different reference signal sequences.

13. The method of claim 12, wherein, The method further comprises: transmitting second information, the second information indicating the coherence time.

14. A communications device, characterized by The apparatus comprises a processor configured to execute computer program instructions to implement the method of any one of claims 1 to 7, or configured to execute computer program instructions to implement the method of any one of claims 8 to 13.

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