Wireless communication method, and communication device

Abstract

Provided are a wireless communication method, and a communication device. The method comprises: sending a sensing signal on a plurality of consecutive time-domain symbols, wherein said plurality of time-domain symbols comprise a first time-domain symbol, and N second time-domain symbols that are located after the first time-domain symbol, signals in the second time-domain symbols comprise the sensing signal, and a cyclic prefix and / or cyclic suffix determined on the basis of the sensing signal, and the signals in said plurality of time-domain symbols are periodic, with a period equal to the length of the sensing signal in each time-domain symbol, N being a positive integer. By means of the design of a cyclic prefix and / or a cyclic suffix, signals in a plurality of time-domain symbols are periodic, with a period equal to the length of a sensing signal in each time-domain symbol. In this way, continuous transmission of the sensing signal is realized, and the periodicity of the sensing signal is ensured.

Description

Method and communication device for wireless communication TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and more particularly, to a method and communication device for wireless communication. BACKGROUND

[0002] Wireless sensing technology realizes the detection and identification of object position, motion state, physiological characteristics and other information by analyzing the interaction relationship between wireless signals and objects. When sensing signals and communication signals coexist in a system, the sensing signals and the communication signals can share hardware and resources. Therefore, how to effectively transmit sensing signals in a communication system is a problem to be solved. SUMMARY

[0003] The present application provides a method and communication device for wireless communication. The various aspects involved in the present application are introduced below.

[0004] In a first aspect, a method for wireless communication is provided, comprising: transmitting a sensing signal on a plurality of continuous time domain symbols, the plurality of time domain symbols comprising a first time domain symbol and N second time domain symbols located after the first time domain symbol, the signal in the second time domain symbol comprising the sensing signal and a cyclic prefix and / or a cyclic suffix determined based on the sensing signal, the signals in the plurality of time domain symbols having periodicity and the period being equal to the length of the sensing signal in each time domain symbol, N being a positive integer.

[0005] In a second aspect, a method for wireless communication is provided, comprising: receiving a sensing signal transmitted on a plurality of continuous time domain symbols, the plurality of time domain symbols comprising a first time domain symbol and N second time domain symbols located after the first time domain symbol, the signal in the second time domain symbol comprising the sensing signal and a cyclic prefix and / or a cyclic suffix determined based on the sensing signal, the signals in the plurality of time domain symbols having periodicity and the period being equal to the length of the sensing signal in each time domain symbol, N being a positive integer.

[0006] In a third aspect, a communication device is provided, comprising: a transceiver configured to transmit a sensing signal on a plurality of continuous time domain symbols, the plurality of time domain symbols comprising a first time domain symbol and N second time domain symbols located after the first time domain symbol, the signal in the second time domain symbol comprising the sensing signal and a cyclic prefix and / or a cyclic suffix determined based on the sensing signal, the signals in the plurality of time domain symbols having periodicity and the period being equal to the length of the sensing signal in each time domain symbol, N being a positive integer.

[0007] In a fourth aspect, a communication device is provided, comprising: a transceiver configured to receive a sensing signal transmitted on a plurality of consecutive time domain symbols, the plurality of time domain symbols comprising a first time domain symbol and N second time domain symbols following the first time domain symbol, the signal in the second time domain symbols comprising the sensing signal and a cyclic prefix and / or a cyclic postfix determined based on the sensing signal, the signals in the plurality of time domain symbols having a periodicity and the periodicity being equal to a length of the sensing signal in each time domain symbol, N being a positive integer.

[0008] In a fifth aspect, a communication device is provided, comprising a transceiver, a memory and a processor, the memory configured to store a program, the processor configured to invoke the program in the memory and control the transceiver to receive or transmit signals, so that the communication device performs the method according to the first aspect.

[0009] In a sixth aspect, a communication device is provided, comprising a transceiver, a memory and a processor, the memory configured to store a program, the processor configured to invoke the program in the memory and control the transceiver to receive or transmit signals, so that the communication device performs the method according to the second aspect.

[0010] In a seventh aspect, an apparatus is provided, comprising a processor configured to invoke a program from a memory, so that the apparatus performs the method according to any one of the first aspect or the second aspect.

[0011] In an eighth aspect, a chip is provided, comprising a processor configured to invoke a program from a memory, so that a device installed with the chip performs the method according to the first aspect or the second aspect.

[0012] In a ninth aspect, a computer readable storage medium is provided, having a program stored thereon, the program causing a computer to perform the method according to the first aspect or the second aspect.

[0013] In a tenth aspect, a computer program product is provided, comprising a program, the program causing a computer to perform the method according to the first aspect or the second aspect.

[0014] In an eleventh aspect, a computer program is provided, the computer program causing a computer to perform the method according to the first aspect or the second aspect.

[0015] In the embodiments of the present application, the sensing signal is transmitted on continuous multiple time domain symbols, the multiple time domain symbols include a first time domain symbol and N second time domain symbols located after the first time domain symbol, the signal in each second time domain symbol includes the sensing signal, and a cyclic prefix and / or a cyclic postfix determined based on the sensing signal, wherein the cyclic prefix and / or the cyclic postfix are designed such that the signals in the multiple time domain symbols have periodicity and the period is equal to the length of the sensing signal in each time domain symbol. In this way, the continuous transmission of the sensing signal is realized, and the periodicity of the sensing signal is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] FIG. 1 is an example of a system architecture of a wireless communication system suitable for the embodiments of the present application.

[0017] FIG. 2 is a schematic diagram of an implementation process of OFDM.

[0018] FIG. 3 is a schematic diagram of adding a traditional CP to a sensing signal.

[0019] FIG. 4 is a flowchart of a wireless communication method according to the embodiments of the present application.

[0020] FIG. 5 is a schematic diagram of adding a head CP and a tail CP to adjacent two time domain symbols respectively according to the embodiments of the present application.

[0021] FIG. 6 is a schematic diagram of an implementation process of OFDM for coexistence of a sensing signal and a communication signal with a head-tail alternating CP according to the embodiments of the present application.

[0022] FIG. 7 is a schematic diagram of an implementation process of OFDM for coexistence of a sensing signal and a communication signal with a cyclic shift CP according to the embodiments of the present application.

[0023] FIG. 8 is a schematic diagram of a structure of a communication device according to the embodiments of the present application.

[0024] FIG. 9 is a schematic diagram of a structure of a communication device according to the embodiments of the present application.

[0025] FIG. 10 is a schematic diagram of an apparatus for communication according to the embodiments of the present application. DETAILED DESCRIPTION

[0026] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0027] Wireless communication system

[0028] FIG. 1 is an example diagram of a system architecture of a wireless communication system 100 to which embodiments of the present application can be applied. The wireless communication system 100 can include a network device 110 and a terminal device 120. The network device 110 can be a device communicating with the terminal device 120. The network device 110 can provide network coverage for a specific geographic area, and can communicate with the terminal device 120 located within the coverage area. The terminal device 120 can access a network, for example, a wireless network, through the network device 110. Optionally, the wireless communication system 100 can further include a network controller, a mobile management entity, and other network entities, for which embodiments of the present application are not limited.

[0029] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, for example, a fifth generation (5G) system or new radio (NR), a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), and the like. The technical solutions provided in the present application can also be applied to future communication systems, for example, a sixth generation mobile communication system, for example, a satellite communication system, and the like.

[0030] In the embodiments of the present application, the terminal device can also be referred to as a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile station (MS), a mobile terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user apparatus. The terminal device in the embodiments of the present application can refer to a device providing voice and / or data connectivity for a user, and can be used to connect people, things and machines, such as handheld devices with wireless connection function, vehicle-mounted devices, etc. The terminal device can also be a mobile phone, a tablet computer (Pad), a notebook computer, a palm computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. Optionally, the terminal device can be used to act as a base station. For example, the terminal device can act as a scheduling entity, which provides sidelink signals between terminal devices in vehicle to everything (V2X) or device to device (D2D), etc. For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and the smart home device communicate with each other without relaying the communication signals through the base station.

[0031] In embodiments of the present application, the network device can be a device for communicating with the terminal device. The network device can be an access network device or a radio access network device. For example, the network device can be a base station. The base station can broadly cover various names in the following or can be replaced by the following names, for example: Node B (Node B), evolved Node B (eNB), next generation Node B (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master station (MeNB), secondary station (SeNB), multi-standard radio (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), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. The base station can also refer to a communication module, modem, or chip configured to be disposed in the foregoing devices or apparatuses. The base station can also be a mobile switching center and a device that assumes a base station function in device-to-device (D2D), vehicle-to-everything (V2X), machine-to-machine (M2M) communication, a network side device in a 6G network, a device that assumes a base station function in a future communication system, etc. The base station can support networks of the same or different access technologies. Embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. The base station can support networks of the same or different access technologies. Embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0032] In addition, the base station can be fixed or mobile. For example, a helicopter or a drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, the helicopter or the drone can be configured to act as a device that communicates with another base station.

[0033] The network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water surface; and can also be deployed on airplanes, balloons and satellites in the air. The scenarios in which the network devices and the terminal devices are located are not limited in the embodiments of the present application.

[0034] It should be understood that all or part of the functions of the communication device in the present application can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform, such as a cloud platform.

[0035] Wireless sensing is a technology developed independently, and has no obvious intersection with the development of mobile communication systems. Sensing services are provided by various specialized sensing devices, such as ordinary radar, laser radar, computer tomography, magnetic resonance imaging, etc. In 5G and earlier communication systems, positioning is the earliest sensing service that can be provided by a mobile communication system.

[0036] In the future, mobile communication systems will cross people and things, and move towards a new era of wisdom of all things. For example, the future mobile communication system can include 6 main application scenarios, 3 of which are communication scenarios enhanced on the basis of the 5G system, and the other 3 are new scenarios beyond communication, which include integrated sensing and communication (also referred to as integrated sensing and communication, ISAC). Therefore, the future communication system has the characteristics of full frequency band, large bandwidth, large-scale antenna array, multi-node cooperation, etc. Because the future communication system has such characteristics, ISAC can be realized in the same system, so that the communication and sensing functions complement each other.

[0037] In the 6G system, general sensing services in addition to positioning will be integrated into the communication system to become a new function, thus opening up a new service. ISAC can help mobile operators provide many new services, such as high-precision positioning, tracking, biomedical and security imaging, simultaneous localization and mapping for complex indoor and outdoor environment mapping, pollution and natural disaster monitoring, gesture and motion recognition, defect and material detection, etc. These new services will in turn create new business scenarios for future consumers and various vertical industries. ISAC systems can support new services, and different industry (e.g., vertical industry, consumer, public service) application scenarios are divided into the following four categories according to function: high-precision positioning and tracking; simultaneous imaging, mapping and positioning; human sensory enhancement; gesture and motion recognition.

[0038] In addition to providing the above new services and new businesses, sensing can assist communication and positioning, and sub-centimeter-level positioning solutions are needed in 6G systems to meet various types of application scenarios in the future. In order to achieve such positioning accuracy, a more in-depth understanding of the propagation environment of wireless signals is needed. By obtaining the radio frequency map of the propagation environment, the position of the corresponding terminal device is obtained. In this way, the multipath characteristics of the propagation channel will play a certain auxiliary role. The high-frequency channel is more sparse, and the number of main reflection paths is less, and the mapping between the position of the terminal device and its propagation channel is easier, which is more conducive to the sensing-assisted positioning of this way.

[0039] For the ISAC scenario, on the one hand, the entire communication network can serve as a huge sensor, and the network elements send and receive wireless signals, and use the transmission, reflection and scattering of radio waves to better perceive and understand the physical world. By obtaining distance, speed, angle and other information from wireless signals, high-precision positioning, gesture capture, motion recognition, detection and tracking of passive objects, imaging and environment reconstruction and other wide range of new services can be provided, realizing "network as a sensor" and providing ultra-high resolution detection and tracking, environment target reconstruction and imaging, target motion recognition and other capabilities, realizing network service scenarios such as smart home, smart factory, smart medical care, and ultimate autonomous driving. On the other hand, the high-precision positioning, imaging and environment reconstruction capabilities provided by sensing can help improve communication performance, for example, beamforming is more accurate, beam failure recovery is faster, terminal channel state information (CSI) tracking overhead is lower, and "sensing-assisted communication" is realized. Sensing is also an observation and sampling of the physical world and the biological world, making it a "new channel" connecting the digital world. For this reason, real-time network sensing can replicate a parallel digital world for the physical world, which is extremely important for the realization of the concept of "digital twin" in the future. As a strategic emerging industry, the low-altitude economy plays an increasingly important role in promoting economic development and strengthening social security. Therefore, future communication networks need to provide more three-dimensional coverage for communication and sensing.

[0040] In the case where sensing and communication coexist in the same system, the sensing signal and the communication signal can share hardware and resources (e.g., spectrum resources). Hardware sharing can effectively reduce costs, simplify deployment, and reduce maintenance problems, enabling sensing to benefit from the economies of scale of mobile communication networks; spectrum sharing is more efficient in spectrum utilization than using independent spectrum for each. Further, from the perspective of waveforms and signal processing, time-domain, frequency-domain, and spatial-domain waveforms and signal processing techniques can be combined to serve both sensing and communication functions. Furthermore, communication and sensing information can be shared across layers, modules, and nodes, and communication and sensing are fully integrated, significantly improving system performance, greatly reducing the overall cost and energy consumption of the network system, and making the system smaller in scale. Other technical innovations such as large-scale coordination between base stations and terminal devices, communication-sensing waveform joint design, advanced interference cancellation techniques, and native artificial intelligence (AI) techniques can further improve the processing capacity of sensing data.

[0041] Embodiments of the present application relate to the design of a communication system in which communication and sensing coexist, and the core of the design is joint signal design. There are differences between the sensing signal and the communication signal. For the communication signal, the focus of the design is on improving spectral efficiency, while for the sensing signal, the focus is on improving sensing resolution and accuracy. Therefore, the underlying signal needs to be designed according to the requirements of the communication signal and the sensing signal, so as to seek a balance between the performance of the communication signal and the sensing signal. The cyclic prefix-orthogonal frequency division multiplexing (CP-OFDM) waveform is suitable for the transmission of the communication signal, and in some studies, the CP-OFDM waveform is also considered to be applied to the sensing signal.

[0042] Although the cyclic prefix (CP) affects autocorrelation, the CP-OFDM-based parameters can be efficiently estimated by a frequency-domain processing method, and the processing gain can be maximized. Therefore, it can be considered to realize the coexistence of the communication signal and the sensing signal on the basis of the OFDM waveform, for example, the communication signal and the sensing signal can share the OFDM symbol, that is, the same OFDM symbol can be used to transmit the communication signal and the sensing signal. In this case, in order to ensure the performance of the sensing signal, the sensing signal needs to be continuously transmitted on multiple OFDM symbols, that is, the sensing signal can span the duration of adjacent OFDM symbols.

[0043] As an example, FIG. 2 shows an implementation process of OFDM. In which, the signal processing flow of the upper row corresponds to the sending end, and the signal processing flow of the lower row corresponds to the receiving end. The OFDM processing of the sending end includes inverse fast flourier transform (IFFT) on the signal obtained after mapping and serial-parallel conversion, and then, after CP addition, windowing, parallel-serial conversion, digital-to-analog conversion (DAC), etc., the radio frequency signal to be sent can be formed. Similarly, the receiving end obtains the actual data content carried in the signal after performing the corresponding inverse operation on the received radio frequency signal, for example, for the OFDM processing of the receiving end, fast Fourier transform (FFT) is required on the OFDM signal. In the case of coexistence of communication signals and sensing signals, taking the sending end as an example, the communication signals and the sensing signals are loaded at the input end of IFFT, and after IFFT, at the output end of IFFT, each tap has the signal after mixing of the communication signals and the sensing signals, and it may not be possible to add CP to the mixed communication signals and sensing signals respectively.

[0044] If the CP is added to the sensing signal according to the CP addition mode of OFDM, the time domain periodicity of the sensing signal sequence cannot be guaranteed, so that better sequence autocorrelation cannot be obtained. For example, as shown in FIG. 3, assuming that the complete sequence of the sensing signal includes (1, 2), after adding CP based on the sequence (1, 2) in OFDM symbol 1 and OFDM symbol 2 respectively, the sequence in OFDM symbol 1 and OFDM symbol 2 becomes (2, 1, 2), that is, the signal transmitted in OFDM symbol 1 and OFDM symbol 2 is (2, 1, 2, 2, 1, 2), which greatly changes the sequence of the sensing signal, and the sensing signal cannot be periodically transmitted.

[0045] Therefore, in the embodiments of the present application, the sensing signal is transmitted on a plurality of continuous time domain symbols, the plurality of time domain symbols include a first time domain symbol and N second time domain symbols located after the first time domain symbol, the signal in each second time domain symbol includes a sensing signal and a cyclic prefix and / or cyclic suffix determined based on the sensing signal, wherein the design of the cyclic prefix and / or cyclic suffix makes the signals in the plurality of time domain symbols have periodicity and the period is equal to the length of the sensing signal in each time domain symbol, thus realizing continuous transmission of the sensing signal and guaranteeing the periodicity of the sensing signal.

[0046] The embodiments of the present application will be described in detail below in conjunction with FIG. 4.

[0047] FIG. 4 is a flow diagram of a wireless communication method according to an embodiment of the present application. The method 400 shown in FIG. 4 can be performed by a transmitting end and a receiving end. The transmitting end and the receiving end are communication devices, for example, the transmitting end is a terminal device and the receiving end is a network device, or the receiving end is a terminal device and the transmitting end is a network device. The terminal device can be, for example, the terminal device 120 shown in FIG. 1, and the network device can be, for example, the network device 110 shown in FIG. 1.

[0048] Referring to FIG. 4, in step 410, the transmitting end transmits the sensing signal on a plurality of continuous time domain symbols.

[0049] Correspondingly, in step 420, the receiving end receives the sensing signal transmitted on the plurality of continuous time domain symbols.

[0050] The time domain symbol can be, for example, the aforementioned OFDM symbol or other types of time domain symbols based on the OFDM symbol.

[0051] The plurality of time domain symbols include a first time domain symbol and N second time domain symbols located after the first time domain symbol, where N is a positive integer. The signal in the second time domain symbol can include the sensing signal and a cyclic prefix and / or cyclic postfix (CPost) determined based on the sensing signal. The signals in the plurality of time domain symbols have periodicity and the period is equal to the length of the sensing signal in one time domain symbol.

[0052] The cyclic prefix can be, for example, the tail signal of the sensing signal copied to the head of the sensing signal to form. The cyclic postfix can be, for example, the head signal of the sensing signal copied to the tail of the sensing signal to form. The cyclic postfix can also be referred to as the cyclic prefix of the tail.

[0053] Embodiments of the present application are applicable to the scenario where the sensing signal and the communication signal coexist in the same system, and for this purpose, different processing methods can be used for the communication signal and the sensing signal. The communication signal and the sensing signal can be transmitted in the same OFDM symbol, for example, can be transmitted through different subcarriers in the same OFDM symbol.

[0054] First, for the first time domain symbol, in some implementations, the first time domain symbol can include the sensing signal and the cyclic prefix determined based on the sensing signal in the first time domain symbol.

[0055] Second, for the second time domain symbol, in some implementations, the second time domain symbol can include the sensing signal and the cyclic postfix determined based on the sensing signal in the second time domain symbol; in other implementations, the second time domain symbol can include the cyclically shifted sensing signal and the cyclic prefix determined based on the cyclically shifted sensing signal.

[0056] The multiple time domain symbols for continuous transmission of the sensing signal include a first time domain symbol and N second time domain symbols after the first time domain symbol. In the case of N = 1, the first time domain symbol and the second time domain symbol can be regarded as two adjacent time domain symbols in the multiple time domain symbols for transmission of the sensing signal, that is, the multiple time domain symbols for transmission of the sensing signal can include multiple groups of "first time domain symbol + second time domain symbol". As an example, taking 4 time domain symbols as an example, the sensing signal includes time domain symbol 1, time domain symbol 2, time domain symbol 3, and time domain symbol 4 in sequence in the continuous time domain symbols, wherein time domain symbol 1 and time domain symbol 3 are the first time domain symbol, and time domain symbol 2 and time domain symbol 4 are the second time domain symbol. Hereinafter, only one group of "first time domain symbol + second time domain symbol" is described as an example.

[0057] In the case of N > 1, the first time domain symbol can be regarded as the starting time domain symbol of the sensing signal. That is, the sensing signal is transmitted through N + 1 continuous time domain symbols (i.e., 1 first time domain symbol + N second time domain symbols).

[0058] Hereinafter, two implementation manners of the second time domain symbol are described respectively.

[0059] Implementation manner 1

[0060] In this implementation manner, in the case of N = 1, the signal in the second time domain symbol can include the sensing signal and the cyclic postfix determined based on the sensing signal. For example, the time domain symbols for continuous transmission of the sensing signal include a first time domain symbol and a second time domain symbol after the first time domain symbol, wherein the signal in the first time domain symbol includes the sensing signal and the cyclic prefix determined based on the sensing signal, and the second time domain symbol includes the sensing signal and the cyclic postfix determined based on the sensing signal.

[0061] The network device can perform frequency division scheduling when scheduling resources for users with communication needs and sensing needs, like in the LTE system and the NR system, without allocating separate resource pools for the communication signals and the sensing signals, to save scheduling complexity and improve resource utilization, to achieve compatibility with traditional terminal devices. As an example, as shown in FIG. 5, when the sensing signals and the communication signals are multiplexed in OFDM symbols, the sensing signals and the communication signals can be multiplexed in the frequency domain, share a set of subcarriers, and the allocation of the subcarriers can be continuous or discontinuous. In the time domain, the sensing signals are repeated between two adjacent symbols (i.e., OFDM symbol 1 and OFDM symbol 2). Among them, the communication signals in the OFDM symbol 1 are provided with a CP before them, and the sensing signals in the OFDM symbol 1 are provided with a CP before them; the communication signals in the OFDM symbol 2 are provided with a CP before them, and the sensing signals in the OFDM symbol 2 are provided with a cyclic postfix after them. That is, the sensing signals use the cyclic prefix and the cyclic postfix alternately between the OFDM symbols.

[0062] For example, assuming that the sensing signals include a sequence (1, 2), the tail of the sequence (1, 2) is added to the head of the OFDM symbol 1 as a cyclic prefix, resulting in a sequence (2, 1, 2) in the OFDM symbol 1, and the head of the sequence (1, 2) is added to the tail of the OFDM symbol 2 as a cyclic postfix, resulting in a sequence (1, 2, 1) in the OFDM symbol 2. In this way, the signals transmitted on the OFDM symbol 1 and the OFDM symbol 2 include (2, 1, 2, 1, 2, 1), which has periodicity with a period of the length of the sequence (2, 1).

[0063] For another example, assuming that the sensing signals include a sequence (1, 2, 3, 4), the tail of the sequence (1, 2, 3, 4) is added to the head of the OFDM symbol 1 as a cyclic prefix, resulting in a sequence (3, 4, 1, 2, 3, 4) in the OFDM symbol 1, and the head of the sequence (1, 2, 3, 4) is added to the tail of the OFDM symbol 2 as a cyclic postfix, resulting in a sequence (1, 2, 3, 4, 1, 2) in the OFDM symbol 2. In this way, the signals transmitted on the OFDM symbol 1 and the OFDM symbol 2 include (3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2), which has periodicity with a period of the length of the sequence (3, 4, 1, 2).

[0064] As an example, FIG. 6 shows an OFDM procedure corresponding to the implementation 1, in which different processing is adopted for the communication signal and the sensing signal in the step of adding the cyclic prefix. In the branch corresponding to the sensing signal shown in FIG. 6, the sensing signal in two adjacent symbols is alternately processed by adding the cyclic prefix and the cyclic postfix. For example, for two OFDM symbols repeatedly transmitting the sensing signal, the first OFDM symbol is processed by adding the cyclic prefix and the second OFDM symbol is processed by adding the cyclic postfix. In the branch corresponding to the communication signal shown in FIG. 6, the cyclic prefix is added based on the conventional method. Finally, the communication signal and the sensing signal can be simultaneously transmitted in the same OFDM symbol, for example, the sensing signal and the communication signal are transmitted in different subcarriers in the same OFDM symbol.

[0065] Implementation 2

[0066] In this implementation, in the case of N > 1, the signal in the second time domain symbol includes the cyclically shifted sensing signal and the cyclic prefix determined based on the cyclically shifted sensing signal. For example, the multiple time domain symbols repeatedly transmitting the sensing signal include a first time domain symbol and N second time domain symbols after the first time domain symbol, wherein the signal in the first time domain symbol includes the sensing signal and the cyclic prefix determined based on the sensing signal, and the signal in each of the N second time domain symbols includes the sensing signal in each of the second time domain symbols and the cyclic postfix determined based on the sensing signal. That is, for the multiple time domain symbols repeatedly transmitting the sensing signal, the sensing signal in each of the second time domain symbols after the first time domain symbol needs to be cyclically shifted (or shifted) and then the cyclic prefix is added.

[0067] In some implementations, the cyclic shift amount corresponding to the nth second time domain symbol of the N second time domain symbols is n*I CP , I CP is the length of the cyclic prefix (for example, the length of the cyclic prefix of the first time domain symbol), and n is from 1 to N. For example, when n = 1, the cyclic shift amount corresponding to the first second time domain symbol of the N second time domain symbols is I CP ; when n = 2, the cyclic shift amount corresponding to the second second time domain symbol of the N second time domain symbols is 2*I CP ; …; when n = N-1, the cyclic shift amount corresponding to the (N-1)th second time domain symbol of the N second time domain symbols is (N-1)*I CP ; and when n = N, the cyclic shift amount corresponding to the Nth second time domain symbol of the N second time domain symbols is N*I CP .

[0068] Suppose that the sensing signals include: sequences s(1), s(2), ..., s(M), where M is the length of the sensing signal in each time-domain symbol, and M is a positive integer greater than 1. The cyclically shifted sensing signal within the nth second time-domain symbol may, for example, include: sequence s(n*I CP +1),s(n*I CP +2),…,s(M-1),s(1),s(2),…,s(n*I CP Specifically, for the nth second time-domain symbol, the signal transmitted at the starting point of the nth second time-domain symbol is s(n*I). CP +1), then, in chronological order, s(n*I) CP +1),s(n*I CP +2),……,s(M-1) are sequentially mapped to the corresponding time domain positions within the nth second time domain symbol. After s(M-1) is mapped, starting from s(1), s(1), s(2),……,s(n*I) are mapped in chronological order. CP The values ​​are sequentially mapped to the corresponding time-domain positions within the nth second time-domain symbol, thus completing the cyclic shift. After completing the cyclic shift, the length I of the tail is... CP The part is added to the beginning, thus completing the addition of the loop prefix.

[0069] For example, suppose the sensing signal consists of the sequence (1,2,3,4), and is repeatedly transmitted using consecutive OFDM symbols 1, 2, 3, and 4, while maintaining the periodicity of the sensing signal. First, the tail of the sequence (1,2,3,4) is appended to the head of OFDM symbol 1 as a cyclic prefix, with a cyclic prefix length I. CP =2, resulting in the sequence (3,4,1,2,3,4) of OFDM symbol 1. Next, the sensing signal (1,2,3,4) in OFDM symbol 2 is cyclically shifted. Here, N=3, and OFDM symbol 2 corresponds to n=1. Therefore, the cyclic shift amount corresponding to the sensing signal (1,2,3,4) in OFDM symbol 2 is 1*I. CP =2, resulting in the sequence (3,4,1,2). Then, CP is added based on the sequence (3,4,1,2), resulting in the signal (1,2,3,4,1,2) in OFDM symbol 2. Next, the sensing signal (1,2,3,4) in OFDM symbol 3 is cyclically shifted. OFDM symbol 3 corresponds to n=2; therefore, the cyclic shift amount corresponding to the sensing signal (1,2,3,4) in OFDM symbol 3 is 2*I. CP=2*2=4, resulting in the sequence (1,2,3,4). Then, CP is added based on the sequence (1,2,3,4), resulting in the signal in OFDM symbol 3 as (3,4,1,2,3,4). Finally, the sensing signal (1,2,3,4) in OFDM symbol 4 is cyclically shifted. OFDM symbol 4 corresponds to n=3; therefore, the cyclic shift amount corresponding to the sensing signal (1,2,3,4) in OFDM symbol 4 is 3*I. CP =3*2=6, resulting in the sequence (3,4,1,2). Then, a CP is added based on the sequence (3,4,1,2), resulting in the signal (1,2,3,4,1,2) in OFDM symbol 4. Thus, the signals transmitted on consecutive OFDM symbols 1, 2, and 3 include (3,4,1,2,3,4,1,2,3,4,1,2,3,4,1,2,3,4,1,2,3,4,1,2,3,4,1,2,3,4,1,2). This sequence is periodic, with a period equal to the length of the sequence (3,4,1,2).

[0070] For example, suppose the sensing signal consists of the sequence (1,2,3,4,5,6), and is repeatedly transmitted using consecutive OFDM symbols 1, 2, and 3, while maintaining the periodicity of the sensing signal. First, the tail of the sequence (1,2,3,4,5,6) is appended to the head of OFDM symbol 1 as a cyclic prefix (CP), with a cyclic prefix length of I. CP =2, resulting in the sequence (5,6,1,2,3,4,5,6) in OFDM symbol 1. Next, the sensing signal (1,2,3,4,5,6) in OFDM symbol 2 is cyclically shifted. Here, N=2, and OFDM symbol 2 corresponds to n=1. Therefore, the cyclic shift amount corresponding to the sensing signal (1,2,3,4,5,6) in OFDM symbol 2 is 1*I. CP =2, resulting in the sequence (3,4,5,6,1,2). Then, CP is added based on the sequence (3,4,5,6,1,2), resulting in the signal in OFDM symbol 2 as (1,2,3,4,5,6,1,2). Finally, the sensing signal (1,2,3,4,5,6) in OFDM symbol 3 is cyclically shifted. OFDM symbol 3 corresponds to n=2; therefore, the cyclic shift amount corresponding to the sensing signal (1,2,3,4,5,6) in OFDM symbol 3 is 2*I. CP=2*2=4, resulting in the sequence (5,6,1,2,3,4). Then, a CP is added based on the sequence (5,6,1,2,3,4), resulting in the signal in OFDM symbol 3 as (3,4,5,6,1,2,3,4). Thus, the signals transmitted on consecutive OFDM symbols 1, 2, and 3 include (5,6,1,2,3,4,5,6,1,2,3,4,5,6,1,2,3,4,5,6,1,2,3,4,5,6,1,2,3,4). This sequence is periodic, and the period is the length of the sequence (5,6,1,2,3,4).

[0071] As an example, Figure 7 illustrates the OFDM flow corresponding to Implementation Method 2. In the step of adding the cyclic prefix, different processing methods are used for the communication signal and the sensing signal. Specifically, on the branch corresponding to the sensing signal shown in Figure 7, the sensing signal in the OFDM symbols following the first OFDM symbol needs to be cyclically shifted before adding the cyclic prefix based on the shifted sensing signal. On the branch corresponding to the communication signal shown in Figure 7, the cyclic prefix can be added using the traditional method. Finally, communication signals and sensing signals can be transmitted simultaneously on the same OFDM symbol, for example, transmitting sensing signals and communication signals on different subcarriers within the same OFDM signal.

[0072] In some implementations, the sensed signal is either not processed by OFDM before determining the cyclic prefix and / or cyclic suffix based on the sensed signal, or the sensed signal is processed by OFDM. That is, OFDM processing is optional for the sensed signal. For example, as shown in Figures 6 and 7, the IFFT processing step may or may not be performed for the sensed signal.

[0073] The method embodiments of this application have been described in detail above with reference to Figures 1 to 7. The apparatus embodiments of this application will be described in detail below with reference to Figures 8 to 10. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments. Therefore, any parts not described in detail can be referred to the foregoing method embodiments.

[0074] Figure 8 is a schematic diagram of the structure of a communication device provided in an embodiment of this application. The communication device 800 shown in Figure 8 may include a transceiver unit 810. The transceiver unit 810 is used to transmit sensing signals on a plurality of consecutive time-domain symbols. The plurality of time-domain symbols includes a first time-domain symbol and N second time-domain symbols located after the first time-domain symbol. The signals in the second time-domain symbols include the sensing signals and a cyclic prefix and / or cyclic suffix determined based on the sensing signals. The signals in the plurality of time-domain symbols are periodic, and the period is equal to the length of the sensing signals in each time-domain symbol, where N is a positive integer.

[0075] In some implementations, the cyclic suffix is ​​formed by copying the head signal of the sensing signal to the tail signal.

[0076] In some implementations, the signal in the second time-domain symbol includes: the sensed signal and a cyclic suffix determined based on the sensed signal; or, the sensed signal after cyclic shift and a cyclic prefix determined based on the sensed signal after cyclic shift.

[0077] In some implementations, when N=1, the signal in the second time-domain symbol includes the sensed signal and a cyclic suffix determined based on the sensed signal.

[0078] In some implementations, when N > 1, the signal in the second time-domain symbol includes the cyclically shifted sensed signal and a cyclic prefix determined based on the cyclically shifted sensed signal.

[0079] In some implementations, the cyclic shift amount corresponding to the nth second time-domain symbol among the N second time-domain symbols is n*I. CP I CP Let n be the length of the cyclic prefix, where n ranges from 1 to N.

[0080] In some implementations, the sensing signal includes sequences s(1), s(2), ..., s(M), where M is a positive integer greater than 1, and the cyclically shifted sensing signal within the nth second time-domain symbol includes the sequence s(n*I CP +1),s(n*I CP +2),…,s(M-1),s(1),s(2),…,s(n*I CP ).

[0081] In some implementations, the first time-domain symbol includes the sensing signal and a cyclic prefix determined based on the sensing signal.

[0082] In some implementations, the sensing signal is either not processed by OFDM before determining the cyclic prefix and / or the cyclic suffix based on the sensing signal, or the sensing signal is processed by OFDM.

[0083] In some implementations, the transceiver unit 810 is further configured to: transmit communication signals on the plurality of time-domain symbols, wherein the communication signals and the sensing signals are located on different subcarriers in the plurality of time-domain symbols.

[0084] It is understood that the transceiver unit 810 may be, for example, a transceiver 1030. Additionally, the communication device 600 may optionally include a processor 1010 and a memory 1020, as detailed in Figure 10.

[0085] Figure 9 is a schematic diagram of the structure of a communication device provided in an embodiment of this application. The communication device 900 shown in Figure 9 may include a transceiver unit 910. The transceiver unit 910 is used to receive sensing signals transmitted on a plurality of consecutive time-domain symbols. The plurality of time-domain symbols includes a first time-domain symbol and N second time-domain symbols located after the first time-domain symbol. The signals in the second time-domain symbols include the sensing signals and a cyclic prefix and / or cyclic suffix determined based on the sensing signals. The signals in the plurality of time-domain symbols are periodic, and the period is equal to the length of the sensing signal in each time-domain symbol, where N is a positive integer.

[0086] In some implementations, the cyclic suffix is ​​formed by copying the head signal of the sensing signal to the tail signal.

[0087] In some implementations, the signal in the second time-domain symbol includes: the sensed signal and a cyclic suffix determined based on the sensed signal; or, the sensed signal after cyclic shift and a cyclic prefix determined based on the sensed signal after cyclic shift.

[0088] In some implementations, when N=1, the signal in the second time-domain symbol includes the sensed signal and a cyclic suffix determined based on the sensed signal.

[0089] In some implementations, when N > 1, the signal in the second time-domain symbol includes the cyclically shifted sensed signal and a cyclic prefix determined based on the cyclically shifted sensed signal.

[0090] In some implementations, the cyclic shift amount corresponding to the nth second time-domain symbol among the N second time-domain symbols is n*I. CP I CP Let n be the length of the cyclic prefix, where n ranges from 1 to N.

[0091] In some implementations, the sensing signal includes sequences s(1), s(2), ..., s(M), where M is a positive integer greater than 1, and the cyclically shifted sensing signal within the nth second time-domain symbol includes the sequence s(n*I CP +1),s(n*I CP +2),…,s(M-1),s(1),s(2),…,s(n*I CP ).

[0092] In some implementations, the first time-domain symbol includes the sensing signal and a cyclic prefix determined based on the sensing signal.

[0093] In some implementations, the sensing signal is either not processed by OFDM before determining the cyclic prefix and / or the cyclic suffix based on the sensing signal, or the sensing signal is processed by OFDM.

[0094] In some implementations, the transceiver unit 910 is further configured to: receive communication signals transmitted on the plurality of time-domain symbols, wherein the communication signals and the sensing signals are located on different subcarriers in the plurality of time-domain symbols.

[0095] It is understood that the transceiver unit 910 may be, for example, a transceiver 1030. Additionally, the communication device 900 may optionally include a processor 1010 and a memory 1020, as detailed in Figure 10.

[0096] Figure 10 is a schematic structural diagram of a communication apparatus according to an embodiment of this application. The dashed lines in Figure 10 indicate that the unit or module is optional. The apparatus 1000 can be used to implement the methods described in the above method embodiments. The apparatus 1000 may be, for example, a chip or a communication device.

[0097] Apparatus 1000 may include one or more processors 1010. Processor 1010 may support apparatus 1000 in implementing the methods described in the foregoing method embodiments. Processor 1010 may be a general-purpose processor or a special-purpose processor. For example, processor 1010 may be a central processing unit (CPU). Alternatively, processor 1010 may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. General-purpose processors may be microprocessors or any conventional processor, etc.

[0098] The apparatus 1000 may further include one or more memories 1020. The memories 1020 store programs that can be executed by the processor 1010, causing the processor 1010 to perform the methods described in the above method embodiments. The memories 1020 may be independent of the processor 1010, or they may be integrated into the processor 1010.

[0099] The device 1000 may also include a transceiver 1030. The processor 1010 can communicate with other devices or chips through the transceiver 1030. For example, the processor 1010 can send and receive data with other devices or chips through the transceiver 1030.

[0100] This application also provides a communication system. The communication system includes the aforementioned communication devices (e.g., terminal devices and network devices). In some implementations, the system further includes other devices that interact with the communication devices.

[0101] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to the communication device provided in this application, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0102] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the communication device provided in this application embodiment, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0103] This application also provides a computer program. This computer program can be applied to the communication device provided in this application, and the computer program causes the computer to execute the methods performed by the communication device in various embodiments of this application.

[0104] It should be understood that the terms "system" and "network" in the embodiments of this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of this application and is not intended to limit this application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0105] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0106] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0107] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0108] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in the communication device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0109] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0110] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0111] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0112] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0113] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0114] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0115] 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 instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0116] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method of wireless communication, comprising: The method comprises: sending a sensing signal on a plurality of continuous time domain symbols, the plurality of time domain symbols comprising a first time domain symbol and N second time domain symbols after the first time domain symbol, the signal in the second time domain symbols comprising the sensing signal and a cyclic prefix and / or a cyclic suffix determined based on the sensing signal, the signals in the plurality of time domain symbols having a periodicity and the periodicity being equal to a length of the sensing signal in each time domain symbol, N being a positive integer.

2. The method of claim 1, wherein, The cyclic suffix is formed by copying a head signal of the sensing signal to a tail of the sensing signal.

3. The method according to claim 1 or 2, characterized in that, The signal in the second time domain symbols comprises: the sensing signal and a cyclic suffix determined based on the sensing signal; or, the sensing signal after cyclic shift and a cyclic prefix determined based on the sensing signal after cyclic shift.

4. The method of claim 3, wherein, In a case that N=1, the signal in the second time domain symbols comprises the sensing signal and a cyclic suffix determined based on the sensing signal.

5. The method of claim 3, wherein, In a case that N>1, the signal in the second time domain symbols comprises the sensing signal after cyclic shift and a cyclic prefix determined based on the sensing signal after cyclic shift.

6. The method of claim 5, wherein, A cyclic shift amount corresponding to an n th second time domain symbol in the N second time domain symbols is n*I CP , CP I is a length of the cyclic prefix, and n is from 1 to N.

7. The method of claim 6, wherein, The sensing signal includes sequences s(1), s(2), …, s(M), M is a positive integer greater than 1, and the cyclically shifted sensing signal in the nth second time domain symbol includes sequences s(n*I CP +1), s(n*I CP +2), …, s(M-1), s(1), s(2), …, s(n*I CP ).

8. The method according to any one of claims 3 to 7, characterized in that, The first time domain symbol comprises the sensing signal and a cyclic prefix determined based on the sensing signal.

9. The method according to any one of claims 1 to 8, characterized in that, Before the cyclic prefix and / or the cyclic suffix is determined based on the sensing signal, the sensing signal is not subjected to orthogonal frequency division multiplexing (OFDM) processing, or the sensing signal is subjected to the OFDM processing.

10. The method according to any one of claims 1 to 9, characterized in that, The method further comprises: sending a communication signal on the plurality of time domain symbols, the communication signal being located at different subcarriers from the sensing signal in the plurality of time domain symbols.

11. A method of wireless communication, comprising: The method comprises: receiving a sensing signal sent on a plurality of continuous time domain symbols, the plurality of time domain symbols comprising a first time symbol and N second time domain symbols after the first time domain symbol, the signal in the second symbols comprising the sensing signal and a cyclic prefix and / or a cyclic suffix determined based on the sensing signals, the signals in the plurality of time domain symbols having a periodicity and the periodicity being a length of the sensing signal in each time domain symbol, N being a positive integer.

12. The method of claim 11, wherein, The cycle suffix is formed by copying a head signal of the sensing signal to a tail of the sensing signal 13. The method according to claim 11 or 12, characterized in that, The signal in the second time domain symbols comprises: the sensing signal and a cyclic suffix determined based the sensing signal; or, the sensing signal after cyclic shift and a cyclic prefix determined based on sensing signal after cyclic shift.

14. The method of claim 13, wherein, In a case that N=1, the signal in the second symbols comprises the sensing signal and a cyclic suffix determined based on the sensing signal.

15. The method of claim 13, wherein, In a case of N>1, the signal in the second time domain symbols comprises the sensing signal after cyclic shift, and a cyclic prefix determined based on the sensing signal after cyclic shift.

16. The method of claim 15, wherein, A cyclic shift amount corresponding to an n th second time domain symbol in the N second time domain symbols is n*I CP , CP is a length of the cyclic prefix, and n is from 1 to N.

17. The method of claim 16, wherein, The sensing signal includes sequences s(1), s(2), …, s(M), M is a positive integer greater than 1, and the cyclically shifted sensing signal in the nth second time domain symbol includes sequences s(n*I CP +1), s(n*I CP +2), …, s(M-1), s(1), s(2), …, s(n*I CP ).

18. The method according to any one of claims 13 to 17, characterized in that, The first time domain symbol comprising the sensing signal and a cyclic prefix determined based on the sensing signal.

19. The method according to any one of claims 11 to 18, characterized in that, The sensing signal is not subjected to orthogonal frequency division multiplexing (OFDM) processing before the cyclic prefix and / or the cyclic postfix is determined based on the sensing signal, or the sensing signal is subjected to the OFDM processing.

20. The method of any one of claims 11 to 19, wherein, The method further includes: receiving a sensing signal transmitted on the plurality of time domain symbols, the communication signal and the sensing signal being located on different subcarriers in the plurality of time domain symbols.

21. A communications device, characterized by comprising: a transceiver configured to transmit a sensing signal on a plurality of continuous time domain symbols, the plurality of time domain symbols including a first time domain symbol and N second time domain symbols located after the first time domain symbol, a signal in the second time domain symbols including the sensing signal and a cyclic prefix and / or a cyclic postfix determined based on the sensing signal, the signals in the plurality of time domain symbols having a periodicity equal to a length of the sensing signal in each time domain symbol, N being a positive integer.

22. The communication device of claim 21, wherein, The cyclic postfix is formed by copying a head signal of the sensing signal to a tail of the sensing signal.

23. The communication device of claim 21 or 22, wherein, The signal in the second time domain symbols includes: the sensing signal and a cyclic postfix determined based on the sensing signal; or the sensing signal after cyclic shift and a cyclic prefix determined based on the sensing signal after cyclic shift.

24. The communication device of claim 23, wherein, In a case where N=1, the signal in the second time domain symbols includes the sensing signal and a cyclic postfix determined based on the sensing signal.

25. The communication device of claim 23, wherein, In a case where N>1, the signal in the second time domain symbols includes the sensing signal after cyclic shift and a cyclic prefix determined based on the sensing signal after cyclic shift.

26. The communication device of claim 25, wherein, A cyclic shift amount corresponding to an n th second time domain symbol in the N second time domain symbols is n*I CP , CP I is a length of the cyclic prefix, and n is from 1 to N.

27. The communication device of claim 26, wherein, The sensing signal includes sequences s(1), s(2), …, s(M), M is a positive integer greater than 1, and the cyclically shifted sensing signal in the nth second time domain symbol includes sequences s(n*I CP +1), s(n*I CP +2), …, s(M-1), s(1), s(2), …, s(n*I CP ).

28. The communication device of any one of claims 23-27, wherein, The first time domain symbol includes the sensing signal and a cyclic prefix determined based on the sensing signal.

29. The communication device of any of claims 21-28, wherein, The sensing signal is not subjected to orthogonal frequency division multiplexing (OFDM) processing before a cyclic prefix and / or a cyclic postfix is determined based on the sensing signal, or the sensing signal is subjected to the OFDMA processing.

30. The communication device of any one of claims 21 to 29, wherein, The transceiver is further configured to: transmit a communication signal on the plurality of time domain symbols, the communication signal and the sensing signal being located on different time domain symbols.

31. A communications device, characterized by comprising: a transceiver configured to receive a sensing signal transmitted on a plurality of continuous time domain symbols, the plurality of time domain symbols including a first time symbol and N second time domain symbols located after the first time domain symbol, a signal in the plurality of time domain symbols including the sensing signal and a cyclic prefix and / or a cyclic postfix determined based on a sensing signal, the signals in the plurality of time domain symbols having a periodicity equal to a sensing signal length in each time domain symbol, N being a positive integer.

32. The communication device of claim 31, wherein, The cyclic postfix is formed by copying the head signal of the sensing signal to the tail of the sensing signal.

33. The communication device of claim 31 or 32, wherein, The signal in the second time domain symbols includes: the sensing signal, and a cyclic postfix determined based on the sensing signal; or the sensing signal after cyclic shift, and a cyclic prefix determined based on the sensing signal after cyclic shift.

34. The communication device of claim 33, wherein, In a case that N=1, the signal in the second time domain symbol comprises the sensing signal and a cyclic postfix determined based on the sensing signal.

35. The communication device of claim 33, wherein, In a case that N>1, the signal in the second time domain symbol comprises the cyclic-shifted sensing signal and a cyclic prefix determined based on the cyclic-shifted sensing signal.

36. The communication device of claim 35, wherein, A cyclic shift amount corresponding to an n th second time domain symbol in the N second time domain symbols is n*I CP , CP is a length of the cyclic prefix, and n is from 1 to N.

37. The communication device of claim 36, wherein, The sensing signal includes sequences s(1), s(2), …, s(M), M is a positive integer greater than 1, and the cyclically shifted sensing signal in the nth second time domain symbol includes sequences s(n*I CP +1), s(n*I CP +2), …, s(M-1), s(1), s(2), …, s(n*I CP ).

38. The communication device of any one of claims 33 to 37, wherein, The first time domain symbol comprises the sensing signal and a cyclic prefix determined based on the sensing signal.

39. The communication device according to any one of claims 31 to 38, characterized by, Before the cyclic prefix and / or the cyclic postfix are determined based on the sensing signal, the sensing signal is not subjected to orthogonal frequency division multiplexing (OFDM) processing, or the sensing signal is subjected to the OFDM processing.

40. The communication device according to any one of claims 31 to 39, wherein, The transceiver is further configured to: receive a communication signal transmitted on the plurality of time domain symbols, the communication signal being located on different subcarriers in the plurality of time domain symbols from the sensing signal.

41. A communications device, characterized by A communication device comprising a transceiver, a memory, and a processor, wherein the memory is configured to store a program, and the processor is configured to invoke the program in the memory and control the transceiver to receive or transmit a signal, so that the communication device performs the method according to any one of claims 1 to 10.

42. A communications device, characterized by A communication device comprising a transceiver, a memory, and a processor, wherein the memory is configured to store a program, and the processor is configured to invoke the program in the memory and control the transceiver to receive or transmit a signal, so that the communication device performs the method according to any one of claims 11 to 20.

43. An apparatus comprising: An apparatus comprising a processor configured to invoke a program from a memory, so that the apparatus performs the method according to any one of claims 1 to 20.

44. A chip, comprising: An apparatus comprising a processor configured to invoke a program from a memory, so that a device installed with the chip performs the method according to any one of claims 1 to 20.

45. A computer-readable storage medium, comprising: A computer program product having a program stored thereon, the program causing a computer to perform the method according to any one of claims 1 to 20.

46. A computer program product, characterised in that, A computer program product having a program stored thereon, the program causing a computer to perform the method according to any one of claims 1 to 20.

47. A computer program, characterized in that, The computer program product causes a computer to perform the method according to any one of claims 1 to 20.

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