Wireless communication method and communication device

Abstract

The invention provides a wireless communication method and communication equipment. 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 located after the first time domain symbol, the signal in the second time domain symbol comprises the sensing signal and a cyclic prefix and / or cyclic suffix determined based on the sensing signal, the signals in the plurality of time domain symbols have periodicity, the period is equal to the length of the sensing signal in each time domain symbol, and N is a positive integer. Through the design of the cyclic prefix and / or the cyclic suffix, 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, so that the continuous transmission of the sensing signals is realized, and the periodicity of the sensing signals is ensured.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a wireless communication method and communication device. Background Art

[0002] Wireless sensing technology can detect and identify information such as the location, motion state, and physiological characteristics of an object by analyzing the interaction between wireless signals and objects. When sensing signals and communication signals coexist in the system, hardware and resources can be shared between sensing signals and communication signals. Therefore, how to effectively transmit sensing signals in the communication system has become a problem that needs to be solved. Summary of the invention

[0003] The present application provides a wireless communication method and a communication device. The following introduces various aspects involved in the present application.

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

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

[0006] According to a third aspect, a communication device is provided, comprising: a transceiver unit, configured to send a perception signal on a plurality of consecutive time domain symbols, wherein 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, wherein a signal in the second time domain symbol includes the perception signal and a cyclic prefix and / or a cyclic suffix determined based on the perception signal, wherein the signals in the plurality of time domain symbols are periodic and the period is equal to the length of the perception signal in each time domain symbol, and N is a positive integer.

[0007] In a fourth aspect, a communication device is provided, comprising: a transceiver unit, configured to receive a perception signal transmitted on multiple consecutive time domain symbols, wherein 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 the second time domain symbol includes the perception signal, and a cyclic prefix and / or cyclic suffix determined based on the perception signal, the signals in the multiple time domain symbols are periodic and the period is equal to the length of the perception signal in each time domain symbol, and N is a positive integer.

[0008] In a fifth aspect, a communication device is provided, comprising a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the communication device executes the method described in the first aspect.

[0009] In a sixth aspect, a communication device is provided, comprising a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the communication device executes the method described in the second aspect.

[0010] In a seventh aspect, a device is provided, comprising a processor, configured to call a program from a memory so that the device executes a method as described in any one of the first aspect or the second aspect.

[0011] In an eighth aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes the method described in the first aspect or the second aspect.

[0012] In a ninth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method as described in the first aspect or the second aspect.

[0013] In a tenth aspect, a computer program product is provided, comprising a program, wherein the program enables a computer to execute the method as described in the first aspect or the second aspect.

[0014] In an eleventh aspect, a computer program is provided, wherein the computer program enables a computer to execute the method as described in the first aspect or the second aspect.

[0015] In an embodiment of the present application, a perception signal is transmitted on multiple consecutive 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 perception signal, and a cyclic prefix and / or cyclic suffix determined based on the perception signal, wherein the cyclic prefix and / or cyclic suffix is ​​designed so that the signals in the multiple time domain symbols have periodicity and the period is equal to the length of the perception signal in each time domain symbol, thereby achieving continuous transmission of the perception signal and ensuring the periodicity of the perception signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 2 is a diagram showing an example of a system architecture of a wireless communication system applicable to an embodiment of the present application.

[0017] Figure 2 Schematic diagram of the OFDM implementation process.

[0018] Figure 3 Schematic diagram of adding traditional CP to perception signals.

[0019] Figure 4 A flowchart of a wireless communication method according to an embodiment of the present application is shown.

[0020] Figure 5 This is a schematic diagram of adding head and tail CPs to two adjacent time domain symbols in an embodiment of the present application.

[0021] Figure 6 It is a schematic diagram of the OFDM implementation process of coexistence of perception signals and communication signals with head-to-tail alternating CPs in an embodiment of the present application.

[0022] Figure 7 It is a schematic diagram of the OFDM implementation process of coexistence of perception signals and communication signals based on cyclic shift CP in an embodiment of the present application.

[0023] Figure 8 A schematic diagram of the structure of a communication device according to an embodiment of the present application.

[0024] Fig. 9 A schematic diagram of the structure of a communication device according to an embodiment of the present application.

[0025] Fig.10 A schematic diagram of a device for communication according to an embodiment of the present application. DETAILED DESCRIPTION

[0026] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0027] Wireless communication system

[0028] Figure 11 is an example diagram of the system architecture of a wireless communication system 100 to which an embodiment of the present application can be applied. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide network coverage for a specific geographical area, and may communicate with the terminal device 120 located in the coverage area. The terminal device 120 may access a network, such as a wireless network, through the network device 110. Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.

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

[0030] In the embodiments of the present application, the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device in the embodiments of the present application may be a device that provides voice and / or data connectivity to a user, and may be used to connect people, objects and machines, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device may also be a mobile phone, a tablet computer, a laptop, a PDA, 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 may be used to act as a base station. For example, the terminal device may act as a dispatching entity that provides sidelink signals between terminal devices in vehicle to everything (V2X) or device to device (D2D). For example, a cellular phone and a car communicate with each other using a sidelink signal. Cellular phones and smart home devices communicate without relaying communication signals through a base station.

[0031] In an embodiment of the present application, a network device may be a device for communicating with a terminal device. The network device may be an access network device or a wireless access network device. For example, the network device may be a base station. The base station may broadly cover the following various names, or may be replaced with the following names, for example: Node B (NodeB), evolved NodeB (evolved NodeB, eNB), next generation NodeB (next generation NodeB, gNB), relay station, transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), master station (MeNB), auxiliary station (SeNB), multi-standard wireless (MSR) node, home base station, network controller, access node, wireless node, access point (access point, AP), transmission node, transceiver node, baseband unit (base band unit, BBU), remote radio unit (remote radio unit, RRU), active antenna unit (active antenna unit, AAU), radio head (remote radiohead, RRH), central unit (central unit, CU), distributed unit (distributed unit, DU), positioning node, etc. The base station may 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 may also refer to a communication module, a modem or a chip used to be arranged in the aforementioned device or apparatus. The base station may also be a mobile switching center and a device to device D2D, vehicle-to-everything (V2X), a device that performs the base station function in machine-to-machine (M2M) communications, a network-side device in a 6G network, and a device that performs the base station function in future communication systems. The base station may support networks with the same or different access technologies. The embodiments of the present application do not limit the specific technologies and specific device forms adopted by the network equipment. The base station may support networks with the same or different access technologies. The embodiments of the present application do not limit the specific technologies and specific device forms adopted by the network equipment.

[0032] In addition, the base station 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 according to the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device for communicating with another base station.

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

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

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

[0036] In the future, the mobile communication system will transcend the human connection and the Internet of Things, and move towards a new era of intelligent connection of all things. For example, the future mobile communication system may include 6 main application scenarios, of which 3 scenarios are enhanced communication scenarios based on the 5G system, and the other 3 scenarios are newly introduced scenarios beyond communication, including integrated communication and perception (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, and multi-node collaboration. It is precisely because the future communication system has such characteristics that ISAC can be implemented in the same system, making the communication and perception functions complement each other.

[0037] In the 6G system, general perception services beyond positioning will be integrated into the communication system as a new function, thus opening up new services. ISAC can help mobile operators provide many new services, such as high-precision positioning, tracking, biomedical and security imaging, simultaneous positioning 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 vertical industries. The new services that the ISAC system may support, and the application scenarios of different industries (e.g., vertical industries, consumers, public services) are divided into the following four categories according to their functions: 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, perception can also assist in communication and positioning. Sub-centimeter-level positioning solutions are required in 6G systems to meet various types of application scenarios in the future. In order to achieve this positioning accuracy, a deeper understanding of the propagation environment of wireless signals is required. By obtaining the RF map of the propagation environment, try to obtain the location of the corresponding terminal device. In this way, the multipath characteristics of the propagation channel will play a certain auxiliary role. High-frequency band channels are sparser, the number of main reflection paths is smaller, and the mapping between the location of the terminal device and its propagation channel is easier, which is more conducive to this type of perception-assisted positioning.

[0039] For the ISAC scenario, on the one hand, the entire communication network can be used as a huge sensor. 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 information such as distance, speed, angle, etc. from wireless signals, a wide range of new services such as high-precision positioning, gesture capture, motion recognition, detection and tracking of passive objects, imaging and environmental reconstruction can be provided, realizing "network as sensor", providing ultra-high resolution detection, positioning and tracking, environmental target reconstruction and imaging, target motion recognition and other capabilities, and realizing network service scenarios such as smart homes, smart factories, smart medical care, and ultimate autonomous driving. On the other hand, the high-precision positioning, imaging and environmental reconstruction capabilities provided by perception can help improve communication performance. For example, beamforming is more accurate, beam failure recovery is faster, and the terminal channel state information (CSI) tracking overhead is lower, realizing "perception-assisted communication". Perception 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 perception can replicate a parallel digital world for the physical world, which is extremely important for realizing 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 perception.

[0040] When perception and communication coexist in the same system, perception signals and communication signals can share hardware and resources (for example, spectrum resources). Hardware sharing can effectively reduce costs, simplify deployment and reduce maintenance issues, allowing perception to benefit from the economies of scale of mobile communication networks; spectrum sharing makes spectrum utilization more efficient than using independent spectrums. Furthermore, from the perspective of waveform and signal processing, time domain, frequency domain, spatial domain waveform and signal processing technologies can be combined to serve both perception and communication functions. Furthermore, communication and perception information can be shared across layers, modules and nodes, communication and perception are fully integrated, system performance is significantly improved, the overall cost and energy consumption of the network system will be greatly reduced, and the system scale will be smaller. Other technological innovations such as larger-scale collaboration between base stations and terminal devices, joint design of communication and perception waveforms, advanced interference elimination technology, and native artificial intelligence (AI) technology can further enhance the processing capabilities of perception data.

[0041] The embodiments of the present application relate to the design of a communication system in which communication and perception coexist, the core of which is signal joint design, wherein there are differences between perception signals and communication signals, and for communication signals, the focus of the design is on the improvement of spectrum efficiency, while the focus of perception signals is on the improvement of perception resolution and accuracy. Therefore, it is necessary to design the underlying signal according to the needs of communication signals and perception signals, so as to seek a performance balance between communication signals and perception signals. The cyclic prefix-orthogonal frequency division multiplexing (CP-OFDM) waveform is suitable for the transmission of communication signals. In some studies, the CP-OFDM waveform is also considered to be applied to perception signals.

[0042] Although the cyclic prefix (CP) affects the autocorrelation, the frequency domain processing method can not only efficiently estimate the parameters based on CP-OFDM, but also maximize the processing gain. Therefore, it is possible to consider the coexistence of communication signals and perception signals based on the OFDM waveform. For example, the communication signal and the perception signal can share OFDM symbols, that is, the same OFDM symbol can be used to transmit both the communication signal and the perception signal. In this case, in order to ensure the performance of the perception signal, the perception signal needs to be continuously transmitted on multiple OFDM symbols, that is, the perception signal may span the duration of adjacent OFDM symbols.

[0043] As an example, Figure 2The implementation process of OFDM is shown. Among them, the signal processing flow in the upper row corresponds to the transmitting end, and the signal processing flow in the lower row corresponds to the receiving end. The OFDM processing at the transmitting end includes performing an inverse fast Fourier transform (IFFT) on the signal obtained after mapping and serial-to-parallel conversion. After that, after adding CP, windowing, parallel-to-serial conversion, digital-to-analog converter (DAC) and other operations, the RF signal to be transmitted can be formed. Similarly, the receiving end performs the corresponding inverse operation on the received RF signal to obtain the actual data content carried in the signal. For example, for the OFDM processing at the receiving end, it is necessary to perform operations such as fast Fourier transform (FFT) on the OFDM signal. In the case where the communication signal and the perception signal coexist, taking the transmitting end as an example, the communication signal and the perception signal will be loaded on the input end of the IFFT. After IFFT, at the output end of the IFFT, each tap has a signal after the communication signal and the perception signal are mixed. It may be impossible to add CP to the mixed communication signal and the perception signal respectively.

[0044] If CP is added to the perception signal in the same way as OFDM, the time domain periodicity of the perception signal sequence cannot be guaranteed, and thus a good sequence autocorrelation cannot be obtained. Figure 3 As shown in the figure, assuming that the complete sequence included in the perception signal is (1,2), after adding CP based on the sequence (1,2) in OFDM symbol 1 and OFDM symbol 2 respectively, the sequences in OFDM symbol 1 and OFDM symbol 2 are changed to (2,1,2), that is, the signals transmitted in OFDM symbol 1 and OFDM symbol 2 are (2,1,2,2,1,2), which makes a significant change to the sequence of the perception signal, and the perception signal cannot be transmitted periodically.

[0045] To this end, in an embodiment of the present application, the perception signal is transmitted on multiple consecutive 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 perception signal, and a cyclic prefix and / or cyclic suffix determined based on the perception signal, wherein the cyclic prefix and / or cyclic suffix is ​​designed so that the signals in the multiple time domain symbols have periodicity and the period is equal to the length of the perception signal in each time domain symbol, thereby achieving continuous transmission of the perception signal and ensuring the periodicity of the perception signal.

[0046] Combine the following Figure 4 , the embodiments of the present application are introduced in detail.

[0047] Figure 4A flowchart of a wireless communication method provided in an embodiment of the present application. Figure 4 The method 400 shown can be performed by a transmitter and a receiver. The transmitter and the receiver are communication devices, for example, the transmitter is a terminal device and the receiver is a network device; or the receiver is a terminal device and the transmitter is a network device. The terminal device can be, for example, Figure 1 The terminal device 120 shown in FIG. 1 , the network device may be, for example, Figure 1 The network device 110 shown in FIG.

[0048] See also Figure 4 , in step 410, the transmitting end sends a perception signal on a plurality of consecutive time domain symbols.

[0049] Accordingly, in step 420, the receiving end receives the perception signal transmitted on a plurality of consecutive time domain symbols.

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

[0051] The multiple 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 may include a perception signal, and a cyclic prefix and / or a cyclic suffix (CPost) determined based on the perception signal. The signals in the multiple time domain symbols are periodic, and the period is equal to the length of the perception signal in one time domain symbol.

[0052] The cyclic prefix may be formed by copying the tail signal of the perception signal to the head of the perception signal, for example. The cyclic suffix may be formed by copying the head signal of the perception signal to the tail of the perception signal, for example. The cyclic suffix may also be called the tail cyclic prefix.

[0053] The embodiments of the present application are applicable to scenarios where the perception signal and the communication signal coexist in the same system. To this end, different processing methods can be used for the communication signal and the perception signal. The communication signal and the perception signal can be transmitted in the same OFDM symbol, for example, they can be transmitted through different subcarriers in the same OFDM symbol.

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

[0055] Secondly, for the second time domain symbol, in some implementations, the second time domain symbol may include a perception signal and a cyclic suffix determined based on the perception signal in the second time domain symbol; in other implementations, the second time domain symbol may include a cyclically shifted perception signal and a cyclic prefix determined based on the cyclically shifted perception signal.

[0056] Among them, the multiple time domain symbols used for continuously transmitting the perception signal include the first time domain symbol and the N second time domain symbols thereafter. 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 among the multiple time domain symbols used to transmit the perception signal, that is, the multiple time domain symbols used to transmit the perception 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 perception signal includes time domain symbol 1, time domain symbol 2, time domain symbol 3, and time domain symbol 4 in the continuous time domain symbols, wherein time domain symbol 1 and time domain symbol 3 are the first time domain symbols, and time domain symbol 2 and time domain symbol 4 are the second time domain symbols. In the following, only one group of "first time domain symbol + second time domain symbol" is used as an example for description.

[0057] When N>1, the first time domain symbol can be regarded as the starting time domain symbol of the perception signal. That is, the perception signal is transmitted through consecutive N+1 time domain symbols (ie, 1 first time domain symbol+N second time domain symbols).

[0058] In the following, two implementations of the second time domain symbol are described respectively.

[0059] Implementation 1

[0060] In this implementation, when N=1, the signal in the second time domain symbol may include the perception signal and a cyclic suffix determined based on the perception signal. For example, the time domain symbol for continuously transmitting the perception signal includes a first time domain symbol and a second time domain symbol located after the first time domain symbol, wherein the signal in the first time domain symbol includes the perception signal and a cyclic prefix determined based on the perception signal, and the second time domain symbol includes the perception signal and a cyclic suffix determined based on the perception signal.

[0061] When scheduling resources for users with communication and perception needs, network devices can perform frequency division scheduling like in LTE and NR systems, without the need to allocate separate resource pools for communication signals and perception signals, to save scheduling complexity and improve resource utilization, so as to achieve compatibility with traditional terminal devices. Figure 5As shown, when the perception signal and the communication signal are multiplexed in OFDM symbols, the perception signal and the communication signal can be multiplexed in the frequency domain, share a set of subcarriers, and the allocation of subcarriers can be continuous or discontinuous. In the time domain, the perception signal is repeated between two adjacent symbols (i.e., OFDM symbol 1 and OFDM symbol 2). Among them, the communication signal in OFDM symbol 1 is preceded by a CP, and the perception signal in OFDM symbol 1 is preceded by a CP; the communication signal in OFDM symbol 2 is preceded by a CP, and the perception signal in OFDM symbol 2 is followed by a cyclic suffix. In other words, the perception signal alternately uses cyclic prefixes and cyclic suffixes between OFDM symbols.

[0062] For example, assuming that the perceived signal includes a sequence (1,2), the tail of the sequence (1,2) is added to the head of OFDM symbol 1 as a cyclic prefix, and the sequence in OFDM symbol 1 is (2,1,2), and the head of the sequence (1,2) is added to the tail of OFDM symbol 2 as a cyclic suffix, and the sequence in OFDM symbol 2 is (1,2,1). In this way, the signal transmitted on OFDM symbol 1 and OFDM symbol 2 includes (2,1,2,1,2,1), which is periodic, and the period is the length of the sequence (2,1).

[0063] For another example, assume that the perception signal includes the sequence (1,2,3,4), add the tail of the sequence (1,2,3,4) to the head of OFDM symbol 1 as a cyclic prefix, and obtain the sequence in OFDM symbol 1 as (3,4,1,2,3,4), add the head of the sequence (1,2,3,4) to the tail of OFDM symbol 2 as a cyclic suffix, and obtain the sequence in OFDM symbol 2 as (1,2,3,4,1,2). In this way, the signal transmitted on OFDM symbol 1 and OFDM symbol 2 includes (3,4,1,2,3,4,1,2,3,4,1,2), which is periodic, and the period is the length of the sequence (3,4,1,2).

[0064] As an example, Figure 6 The OFDM process corresponding to implementation mode 1 is shown, wherein in the step of adding a cyclic prefix, different processing methods are used for the communication signal and the perception signal. Figure 6 In the branch corresponding to the perception signal shown in , it is necessary to alternately add a cyclic prefix and a cyclic suffix to the perception signals in two adjacent symbols. For example, for two OFDM symbols that repeatedly transmit the perception signal, a cyclic prefix and a cyclic suffix are added respectively, and a cyclic prefix is ​​added to the first OFDM symbol and a cyclic suffix is ​​added to the second OFDM symbol. Figure 6In the branch corresponding to the communication signal shown in , a cyclic prefix can be added based on the traditional method. Finally, the communication signal and the perception signal can be transmitted simultaneously on the same OFDM symbol, for example, the perception signal and the communication signal are transmitted on different subcarriers in the same OFDM signal.

[0065] Implementation 2

[0066] In this implementation, when N>1, the signal in the second time domain symbol includes the cyclically shifted perception signal and the cyclic prefix determined based on the cyclically shifted perception signal. For example, multiple time domain symbols for continuously transmitting the perception signal include a first time domain symbol and N second time domain symbols located after the first time domain symbol, wherein the signal in the first time domain symbol includes the perception signal and the cyclic prefix determined based on the perception signal, and the signal in each second time domain symbol of the N second time domain symbols includes the perception signal in each second time domain symbol and the cyclic suffix determined based on the perception signal. In other words, for multiple time domain symbols for repeatedly transmitting the perception signal, it is necessary to perform cyclic shift processing (or shift processing) on ​​the perception signal in each second time domain symbol after the first time domain symbol, and then add the cyclic prefix.

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

[0068] Assume that the perception signal includes: a sequence s(1), s(2), ..., s(M), where M is the length of the perception signal in each time domain symbol, and M is a positive integer greater than 1, wherein the cyclically shifted perception signal in the nth second time domain symbol may include, for example, a sequence s(n*I CP +1),s(n*I CP +2),…,s(M-1),s(1),s(2),…,s(n*I CPSpecifically, 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 mapped to the corresponding time domain positions in the nth second time domain symbol in sequence. After s(M-1) is mapped, starting from s(1), s(1), s(2), ..., s(n*I CP ) are sequentially mapped to the corresponding time domain positions in the nth second time domain symbol, thereby completing the cyclic shift. After the cyclic shift is completed, the length of the tail I CP The part is added to the header to complete the addition of the cyclic prefix.

[0069] For example, assume that the perception signal includes the sequence (1, 2, 3, 4), and the perception signal is repeatedly transmitted through consecutive OFDM symbols 1, 2, 3, and 4, and the periodicity of the perception signal needs to be guaranteed. First, the tail of the sequence (1, 2, 3, 4) is added to the head of OFDM symbol 1 as a cyclic prefix, and the cyclic prefix length is I CP =2, the sequence of OFDM symbol 1 is (3,4,1,2,3,4). Next, the perceptual 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 perceptual signal (1,2,3,4) in OFDM symbol 2 is 1*I CP =2, and the sequence (3,4,1,2) is obtained. Then, CP is added based on the sequence (3,4,1,2), and the signal in OFDM symbol 2 is (1,2,3,4,1,2). Next, the perceptual 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 perceptual signal (1,2,3,4) in OFDM symbol 3 is 2*I CP =2*2=4, and the sequence (1,2,3,4) is obtained. Then, CP is added based on the sequence (1,2,3,4), and the signal in OFDM symbol 3 is (3,4,1,2,3,4). Finally, the perceptual 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 perceptual signal (1,2,3,4) in OFDM symbol 4 is 3*I CP=3*2=6, and the sequence (3,4,1,2) is obtained. Then, based on the sequence (3,4,1,2), CP is added to obtain the signal in OFDM symbol 4 as (1,2,3,4,1,2). In this way, 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). This sequence is periodic, and the period is the length of the sequence (3,4,1,2).

[0070] For another example, assume that the perception signal includes the sequence (1, 2, 3, 4, 5, 6), and the perception signal is repeatedly transmitted through consecutive OFDM symbols 1, 2, and 3, and the periodicity of the perception signal needs to be guaranteed. First, the tail of the sequence (1, 2, 3, 4, 5, 6) is added to the head of OFDM symbol 1 as the CP, and the cyclic prefix length I CP =2, and the sequence in OFDM symbol 1 is (5,6,1,2,3,4,5,6). Next, the perceptual 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 perceptual signal (1,2,3,4,5,6) in OFDM symbol 2 is 1*I CP =2, and the sequence (3,4,5,6,1,2) is obtained. Then, CP is added based on the sequence (3,4,5,6,1,2), and the signal in OFDM symbol 2 is (1,2,3,4,5,6,1,2). Finally, the perceptual 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 perceptual signal (1,2,3,4,5,6) in OFDM symbol 3 is 2*I CP =2*2=4, and the sequence (5,6,1,2,3,4) is obtained. Then, based on the sequence (5,6,1,2,3,4), CP is added to obtain the signal in OFDM symbol 3 as (3,4,5,6,1,2,3,4). In this way, 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). 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 The OFDM process corresponding to implementation mode 2 is shown, wherein in the step of adding a cyclic prefix, different processing methods are used for the communication signal and the perception signal. Figure 7In the branch corresponding to the perception signal shown in , it is necessary to perform cyclic shift processing on the perception signal in the OFDM symbol after the first OFDM symbol and then add CP based on the cyclic shifted perception signal. Figure 7 In the branch corresponding to the communication signal shown in , a cyclic prefix can be added based on the traditional method. Finally, the communication signal and the perception signal can be transmitted simultaneously on the same OFDM symbol, for example, the perception signal and the communication signal are transmitted on different subcarriers in the same OFDM signal.

[0072] In some implementations, before determining the cyclic prefix and / or the cyclic suffix based on the perception signal, the perception signal is not subjected to OFDM processing, or the perception signal is subjected to OFDM processing. That is, OFDM processing is optional for the perception signal. For example, Figure 6 and Figure 7 As shown, for the perception signal, the step of performing IFFT processing may be performed or may not be performed.

[0073] Combination of the above Figures 1 to 7 , describes the method embodiment of the present application in detail, and the following is combined with Figures 8 to 10 , describes the device embodiment of the present application in detail. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment, so the parts not described in detail can refer to the previous method embodiment.

[0074] Figure 8 A schematic diagram of the structure of a communication device provided in an embodiment of the present application. Figure 8 The communication device 800 shown may include a transceiver unit 810. The transceiver unit 810 is configured to send a perception signal on a plurality of consecutive time domain symbols, wherein 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, wherein a signal in the second time domain symbol includes the perception signal and a cyclic prefix and / or a cyclic suffix determined based on the perception signal, wherein the signals in the plurality of time domain symbols are periodic and the period is equal to the length of the perception signal in each time domain symbol, and N is a positive integer.

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

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

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

[0078] In some implementations, when N>1, the signal in the second time domain symbol includes the cyclically shifted perceptual signal and a cyclic prefix determined based on the cyclically shifted perceptual 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 is the length of the cyclic prefix, and n ranges from 1 to N.

[0080] In some implementations, the perception signal includes a sequence s(1), s(2), ..., s(M), where M is a positive integer greater than 1, and the cyclically shifted perception signal in the nth second time domain symbol includes a 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 perception signal and a cyclic prefix determined based on the perception signal.

[0082] In some implementations, before the cyclic prefix and / or the cyclic suffix is ​​determined based on the perception signal, the perception signal is not subjected to OFDM processing, or the perception signal is subjected to OFDM processing.

[0083] In some implementations, the transceiver unit 810 is further configured to: send a communication signal on the multiple time domain symbols, where the communication signal and the perception signal are located on different subcarriers in the multiple time domain symbols.

[0084] It can be understood that the transceiver unit 810 can be, for example, the transceiver 1030. In addition, optionally, the communication device 600 further includes a processor 1010 and a memory 1020, for details, see Fig.10 .

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

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

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

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

[0089] In some implementations, when N>1, the signal in the second time domain symbol includes the cyclically shifted perceptual signal and a cyclic prefix determined based on the cyclically shifted perceptual 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 is the length of the cyclic prefix, and n ranges from 1 to N.

[0091] In some implementations, the perception signal includes a sequence s(1), s(2), ..., s(M), where M is a positive integer greater than 1, and the cyclically shifted perception signal in the nth second time domain symbol includes a 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 perception signal and a cyclic prefix determined based on the perception signal.

[0093] In some implementations, before the cyclic prefix and / or the cyclic suffix is ​​determined based on the perception signal, the perception signal is not subjected to OFDM processing, or the perception signal is subjected to OFDM processing.

[0094] In some implementations, the transceiver unit 910 is further used to: receive a communication signal sent on the multiple time domain symbols, where the communication signal and the perception signal are located on different subcarriers in the multiple time domain symbols.

[0095] It can be understood that the transceiver unit 910 can be, for example, a transceiver 1030. In addition, optionally, the communication device 900 further includes a processor 1010 and a memory 1020, for details, see Fig.10 .

[0096] Fig.10 It is a schematic structural diagram of a device for communication according to an embodiment of the present application. Fig.10 The dotted line shown in indicates that the unit or module is optional. The apparatus 1000 may be used to implement the method described in the above method embodiment. The apparatus 1000 may be, for example, a chip or a communication device.

[0097] The device 1000 may include one or more processors 1010. The processor 1010 may support the device 1000 to implement the method described in the aforementioned method embodiment. The processor 1010 may be a general-purpose processor or a special-purpose processor. For example, the processor 1010 may be a central processing unit (CPU). Alternatively, the processor 1010 may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or may be any conventional processor, etc.

[0098] The apparatus 1000 may further include one or more memories 1020. The memory 1020 stores a program, which can be executed by the processor 1010, so that the processor 1010 executes the method described in the above method embodiment. The memory 1020 may be independent of the processor 1010, or may be integrated in the processor 1010.

[0099] The apparatus 1000 may further include a transceiver 1030. The processor 1010 may communicate with other devices or chips through the transceiver 1030. For example, the processor 1010 may transmit and receive data with other devices or chips through the transceiver 1030.

[0100] The embodiment of the present application also provides a communication system. The communication system includes the above-mentioned communication device (for example, terminal device and network device). In some implementations, the system also includes other devices that interact with the communication device.

[0101] The embodiment of the present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to the communication device provided in the embodiment of the present application, and the program enables a computer to execute the method executed by the communication device in each embodiment of the present application.

[0102] The embodiment of the present 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 the embodiment of the present application, and the program enables the computer to execute the method performed by the communication device in each embodiment of the present application.

[0103] The embodiment of the present application also provides a computer program. The computer program can be applied to the communication device provided in the embodiment of the present application, and the computer program enables a computer to execute the method executed by the communication device in each embodiment of the present application.

[0104] It should be understood that the terms "system" and "network" in the embodiments of the present application can be used interchangeably. In addition, the terms used in the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. The terms "first", "second", "third" and "fourth" in the specification and claims of the present application and the accompanying drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions.

[0105] In the embodiments of the present application, the "indication" mentioned can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0106] In the embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0107] In the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship of indication and being indicated, configuration and being configured, etc.

[0108] In the embodiments of the present application, "pre-definition" or "pre-configuration" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in communication devices (for example, including terminal devices and network devices), and the present application does not limit the specific implementation method. For example, pre-definition can refer to what is defined in the protocol.

[0109] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0110] In the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0111] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean 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 the present application.

[0112] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

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

[0114] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0115] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part 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, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0116] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that: include: A perception signal is sent on multiple consecutive time domain symbols, where the multiple time domain symbols include 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 symbol includes the perception signal, and a cyclic prefix and / or a cyclic suffix determined based on the perception signal, the signals in the multiple time domain symbols are periodic and the period is equal to the length of the perception signal in each time domain symbol, and N is a positive integer.

2. The method according to claim 1, characterized in that The cyclic suffix is ​​formed by copying the header signal of the perception signal to the tail of the perception signal.

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

4. The method according to claim 3, characterized in that In the case of N=1, the signal in the second time domain symbol includes the perceptual signal and a cyclic suffix determined based on the perceptual signal.

5. The method according to claim 3, characterized in that: In the case of N>1, the signal in the second time domain symbol includes the cyclically shifted perceptual signal and a cyclic prefix determined based on the cyclically shifted perceptual signal.

6. The method according to claim 5, characterized in that 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 is the length of the cyclic prefix, and n ranges from 1 to N.

7. The method according to claim 6, characterized in that The perception signal includes a sequence s(1), s(2), ..., s(M), where M is a positive integer greater than 1, and the perception signal after cyclic shift in the nth second time domain symbol includes a sequence 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 includes the perception signal and a cyclic prefix determined based on the perception 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 perception signal, the perception signal is not processed by orthogonal frequency division multiplexing (OFDM), or the perception signal is processed by the OFDM.

10. The method according to any one of claims 1 to 9, characterized in that The method further comprises: A communication signal is sent on the multiple time domain symbols, where the communication signal and the perception signal are located on different subcarriers in the multiple time domain symbols.

11. A wireless communication method, characterized in that: include: Receive a perception signal sent on multiple consecutive time domain symbols, where 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 the second time domain symbol includes the perception signal, and a cyclic prefix and / or a cyclic suffix determined based on the perception signal, the signals in the multiple time domain symbols are periodic and the period is equal to the length of the perception signal in each time domain symbol, and N is a positive integer.

12. The method according to claim 11, characterized in that The cyclic suffix is ​​formed by copying the header signal of the perception signal to the tail of the perception signal.

13. The method according to claim 11 or 12, characterized in that: The signal in the second time domain symbol includes: the perception signal, and a cyclic suffix determined based on the perception signal; or, The perception signal after cyclic shift, and a cyclic prefix determined based on the perception signal after cyclic shift.

14. The method according to claim 13, characterized in that In the case of N=1, the signal in the second time domain symbol includes the perceptual signal and a cyclic suffix determined based on the perceptual signal.

15. The method according to claim 13, characterized in that In the case of N>1, the signal in the second time domain symbol includes the cyclically shifted perceptual signal and a cyclic prefix determined based on the cyclically shifted perceptual signal.

16. The method according to claim 15, characterized in that 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 is the length of the cyclic prefix, and n ranges from 1 to N.

17. The method according to claim 16, characterized in that The perception signal includes a sequence s(1), s(2), ..., s(M), where M is a positive integer greater than 1, and the perception signal after cyclic shift in the nth second time domain symbol includes a sequence 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 includes the perception signal and a cyclic prefix determined based on the perception signal.

19. The method according to any one of claims 11 to 18, characterized in that Before the cyclic prefix and / or the cyclic suffix is ​​determined based on the perception signal, the perception signal is not processed by orthogonal frequency division multiplexing (OFDM), or the perception signal is processed by the OFDM.

20. The method according to any one of claims 11 to 19, characterized in that The method further comprises: A perception signal sent on the multiple time domain symbols is received, wherein the communication signal and the perception signal are located on different subcarriers in the multiple time domain symbols.

21. A communication device, characterized in that: include: A transceiver unit is used to send a perception signal on multiple consecutive time domain symbols, where 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 the second time domain symbol includes the perception signal, and a cyclic prefix and / or a cyclic suffix determined based on the perception signal, the signals in the multiple time domain symbols are periodic and the period is equal to the length of the perception signal in each time domain symbol, and N is a positive integer.

22. The communication device according to claim 21, characterized in that The cyclic suffix is ​​formed by copying the header signal of the perception signal to the tail of the perception signal.

23. The communication device according to claim 21 or 22, characterized in that: The signal in the second time domain symbol includes: the perception signal, and a cyclic suffix determined based on the perception signal; or, The perception signal after cyclic shift, and a cyclic prefix determined based on the perception signal after cyclic shift.

24. The communication device according to claim 23, characterized in that In the case of N=1, the signal in the second time domain symbol includes the perceptual signal and a cyclic suffix determined based on the perceptual signal.

25. The communication device according to claim 23, characterized in that In the case of N>1, the signal in the second time domain symbol includes the cyclically shifted perceptual signal and a cyclic prefix determined based on the cyclically shifted perceptual signal.

26. The communication device according to claim 25, characterized in that 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 is the length of the cyclic prefix, and n ranges from 1 to N.

27. The communication device according to claim 26, characterized in that The perception signal includes a sequence s(1), s(2), ..., s(M), where M is a positive integer greater than 1, and the perception signal after cyclic shift in the nth second time domain symbol includes a sequence 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 according to any one of claims 23 to 27, characterized in that: The first time-domain symbol includes the perception signal and a cyclic prefix determined based on the perception signal.

29. The communication device according to any one of claims 21 to 28, characterized in that: Before the cyclic prefix and / or the cyclic suffix is ​​determined based on the perception signal, the perception signal is not processed by orthogonal frequency division multiplexing (OFDM), or the perception signal is processed by the OFDM.

30. The communication device according to any one of claims 21 to 29, characterized in that: The transceiver unit is also used for: A communication signal is sent on the multiple time domain symbols, where the communication signal and the perception signal are located on different subcarriers in the multiple time domain symbols.

31. A communication device, characterized in that: include: A transceiver unit is used to receive a perception signal transmitted on multiple consecutive time domain symbols, where 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 the second time domain symbol includes the perception signal, and a cyclic prefix and / or a cyclic suffix determined based on the perception signal, the signals in the multiple time domain symbols are periodic and the period is equal to the length of the perception signal in each time domain symbol, and N is a positive integer.

32. The communication device according to claim 31, characterized in that The cyclic suffix is ​​formed by copying the header signal of the perception signal to the tail of the perception signal.

33. The communication device according to claim 31 or 32, characterized in that: The signal in the second time domain symbol includes: the perception signal, and a cyclic suffix determined based on the perception signal; or, The perception signal after cyclic shift, and a cyclic prefix determined based on the perception signal after cyclic shift.

34. The communication device according to claim 33, characterized in that In the case of N=1, the signal in the second time domain symbol includes the perceptual signal and a cyclic suffix determined based on the perceptual signal.

35. The communication device according to claim 33, characterized in that In the case of N>1, the signal in the second time domain symbol includes the cyclically shifted perceptual signal and a cyclic prefix determined based on the cyclically shifted perceptual signal.

36. The communication device according to claim 35, characterized in that 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 is the length of the cyclic prefix, and n ranges from 1 to N.

37. The communication device according to claim 36, characterized in that The perception signal includes a sequence s(1), s(2), ..., s(M), where M is a positive integer greater than 1, and the perception signal after cyclic shift in the nth second time domain symbol includes a sequence 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 according to any one of claims 33 to 37, characterized in that: The first time-domain symbol includes the perception signal and a cyclic prefix determined based on the perception signal.

39. The communication device according to any one of claims 31 to 38, characterized in that: Before the cyclic prefix and / or the cyclic suffix is ​​determined based on the perception signal, the perception signal is not processed by orthogonal frequency division multiplexing (OFDM), or the perception signal is processed by the OFDM.

40. The communication device according to any one of claims 31 to 39, characterized in that: The transceiver unit is also used for: A communication signal sent on the multiple time domain symbols is received, where the communication signal and the perception signal are located on different subcarriers in the multiple time domain symbols.

41. A communication device, characterized in that: The communication device comprises a transceiver, a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory and control the transceiver to receive or send a signal, so that the communication device executes the method according to any one of claims 1 to 10.

42. A communication device, characterized in that: The communication device comprises a transceiver, a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory and control the transceiver to receive or send a signal so that the communication device executes the method according to any one of claims 11 to 20.

43. A device, characterized in that The device comprises a processor, configured to call a program from a memory so as to enable the device to execute the method according to any one of claims 1 to 20.

44. A chip, characterized in that: The device comprises a processor, configured to call a program from a memory, so that a device equipped with the chip executes a method according to any one of claims 1 to 20.

45. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 1 to 20.

46. ​​A computer program product, characterized in that A program is included, which causes a computer to execute the method according to any one of claims 1 to 20.

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

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