Wireless communication method, terminal device and network device

Abstract

The invention provides a wireless communication method, terminal equipment and network equipment. The method comprises: a terminal device receiving or sending a first synchronization signal, the first synchronization signal being a synchronization signal obtained based on a first signal modulation mode, and the first signal modulation mode being a modulation mode other than OFDM. The transmission of the first synchronization signal is realized based on a modulation mode other than OFDM, and the terminal equipment performs synchronization based on the first synchronization signal, so that the synchronization precision is improved.

Description

Technical Field

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

[0002] Orthogonal frequency division multiplexing (OFDM) can convert frequency selective channels into parallel frequency flat sub-channels through multi-carrier transmission. However, in some special scenarios, such as peak-to-average power ratio (PAPR) or high-speed mobile scenarios, the pilot signal obtained based on OFDM may not meet the pilot signal detection requirements of the terminal device. Therefore, how to improve the detection performance of the pilot signal has become an urgent problem to be solved. Summary of the invention

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

[0004] In a first aspect, a method for wireless communication is provided, comprising: a terminal device receives or sends a first pilot signal, wherein the first pilot signal is a pilot signal obtained based on a first signal modulation method, and the first signal modulation method is a modulation method other than OFDM.

[0005] In a second aspect, a method for wireless communication is provided, comprising: a network device sending or receiving a first pilot signal, wherein the first pilot signal is a pilot signal obtained based on a first signal modulation method, and the first signal modulation method is a modulation method other than OFDM.

[0006] According to a third aspect, a terminal device is provided, comprising: a transceiver unit, configured to receive or send a first pilot signal, wherein the first pilot signal is a pilot signal obtained based on a first signal modulation method, and the first signal modulation method is a modulation method other than OFDM.

[0007] In a fourth aspect, a network device is provided, comprising: a transceiver unit, configured to send or receive a first pilot signal, wherein the first pilot signal is a pilot signal obtained based on a first signal modulation method, and the first signal modulation method is a modulation method other than OFDM.

[0008] In a fifth aspect, a terminal 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 terminal device executes the method described in the first aspect.

[0009] In a sixth aspect, a network 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 network 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 first pilot signal based on a modulation method other than OFDM is provided to improve the detection performance of the pilot 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 A schematic flow chart of OFDM processing.

[0018] Figure 3 A flowchart of a wireless communication method according to an embodiment of the present application is shown.

[0019] Figure 4 A schematic diagram of the downlink synchronization process of an embodiment of the present application.

[0020] Figure 5 Schematic diagram of the direction corresponding to the SSB index.

[0021] Figure 6 A schematic diagram of the structure of a terminal device according to an embodiment of the present application.

[0022] Figure 7A schematic diagram of the structure of a network device according to an embodiment of the present application.

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

[0024] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0025] Wireless communication system

[0026] Figure 1 1 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] OFDM

[0034] From 2G time division multiple address (TDMA), 3G code division multiple access (CDMA) to 4G / 5G orthogonal frequency division multiple access (OFDMA) and discrete Fourier transform spread spectrum orthogonal frequency division multiple access (DFT-spread-orthogonal frequency division multiple access, DFT-S-OFDMA), the design of multiple access methods (or waveform design) has always been the core of wireless communication systems. In order to meet the needs of multi-user communication, the system needs to generate a series of mutually orthogonal transmission waveforms that can effectively transmit symbols carrying information through the propagation channel. The use of OFDM can convert frequency selective channels into parallel frequency flat subchannels through multi-carrier transmission, thereby effectively reducing inter-symbol interference (ISI) and realizing flexible allocation of time and frequency resources. However, OFDM also has some practical problems, such as high peak-to-average power ratio and severe Doppler shift in high-speed mobile scenarios. In the uplink of LTE, DFT-s-OFDM is used to reduce PAPR, but this will increase the complexity of implementation and reduce system performance.

[0035] Although OFDM has certain shortcomings, due to its many advantages, OFDM has been adopted since 4G and is still used in 5G. Among them, OFDM divides the transmission data into multiple subchannels (or subcarriers) for parallel transmission. Each subcarrier carries a part of the data at a low rate. When performing broadband transmission, the orthogonality between subcarriers is used to reduce interference. By overlapping the subcarrier spectrum, the subcarrier resources are fully utilized and the spectrum utilization rate is improved. In addition, in the OFDM system, the inter-symbol interference caused by multipath propagation can be alleviated by inserting a guard interval (for example, a cyclic prefix (CP)). In the OFDM system, when performing reception processing such as signal detection and channel estimation, a simple gain adjustment is performed on each subcarrier in the frequency domain, and no complex time domain equalizer is required. Therefore, OFDM is easy to combine with other technologies, such as multiple input multiple output (MIMO) technology, to further improve system performance.

[0036] As an example, Figure 2 The OFDM processing process is shown, in which the signal to be transmitted is mapped to each subcarrier, and the frequency domain signal A on each subcarrier is transformed by inverse fast Fourier transform (IFFT) k Convert to time domain signal a n , where n ranges from 0 to N-1, the process can be implemented based on the following formula, for example:

[0037]

[0038] Afterwards, signal a n After parallel-to-serial conversion and digital-to-analog conversion (D / A) and other processing, the time domain signal a(t) is obtained.

[0039] Doppler shift

[0040] Doppler shift is the change in signal frequency due to the relative motion between the transmitter and the receiver, which can be expressed by the following formula:

[0041]

[0042] Among them, Δf is the frequency shift, v is the relative speed (positive value means moving away, negative value means approaching), c is the speed of light, and f is the carrier frequency of the signal (also referred to as carrier frequency).

[0043] When the transmitter and receiver move away from each other, the frequency of the signal received by the receiver decreases. When the transmitter and receiver move toward each other, the frequency of the signal received by the receiver increases. Frequency drift introduces frequency deviation and affects frequency synchronization, especially for high-speed communications (for example, high-speed trains or satellite communications). The Doppler effect accelerates the change of channel state and affects the accuracy of channel estimation. In technologies such as OFDM, the Doppler effect may cause interference between subcarriers and affect signal demodulation.

[0044] Doppler shift can cause frequency offset and phase drift, thus affecting the synchronization performance of the receiver. Especially in high-speed mobile scenarios, frequency offset may cause carrier frequency offset, making it difficult to demodulate correctly. Since frequency offset brings about time synchronization error, it is not easy to capture the signal starting point. The relative motion between the transmitter and the receiver can cause significant Doppler shift, and the system requires a frequency compensation mechanism to maintain synchronization. In high-speed rail or V2X communications, the Doppler effect caused by high-speed movement requires real-time frequency adjustment to maintain communication quality. High-density device access and frequency offset in dynamic scenarios place higher requirements on synchronization algorithms. Through effective synchronization and Doppler shift compensation, the communication system can maintain efficient and reliable transmission in high-speed mobile and variable channel environments.

[0045] Delay Doppler waveform

[0046] There are many types of delay-Doppler waveforms, among which orthogonal time-frequency space (OTFS) technology has good performance in the delay-Doppler domain. The advantage of OTFS over traditional OFDM receivers is mainly reflected in distance estimation in high-speed mobile scenarios. For traditional OFDM receivers, due to the loss of orthogonality between subcarriers caused by multipath effects and Doppler frequency shift in high-speed scenarios, the frequency offset correction algorithm in traditional OFDM receivers is facing failure. OTFS uses two-dimensional orthogonal basis functions in the delay-Doppler domain to combat the dynamic characteristics of time-varying multipath channels, transforming the fading time-varying multipath channels into sparse and slowly time-varying channels, and then as long as the highest Doppler frequency shift is less than the subcarrier spacing, the frequency offset problem can be solved. For low-speed scenarios, the Doppler frequency shift is close to zero, and the synchronization and channel estimation parameters are mainly located in the delay channel. The traditional OFDM receiver has good estimation performance for the delay channel that is not affected by the Doppler frequency shift. At this time, the delay estimation results of OTFS and OFDM are equivalent in specific scenarios, and the performance is also similar. Therefore, in high-speed scenarios, OTFS can estimate higher Doppler frequency shifts, showing its advantages over OFDM.

[0047] Take downlink synchronization as an example. When performing downlink synchronization, the terminal device first detects the primary synchronization signal to obtain time synchronization information, and then detects the secondary synchronization signal to obtain fine time and frequency synchronization, as well as complete cell identification (identify, ID) information. In some special scenarios, such as high peak-to-average power ratio or high-speed mobile scenarios, the synchronization signal obtained based on OFDM may not meet the downlink synchronization accuracy requirements of the terminal device.

[0048] To this end, an embodiment of the present application provides a first pilot signal based on a modulation method other than OFDM, so as to improve the detection performance of the pilot signal.

[0049] In an embodiment of the present application, the first signal modulation method refers to a modulation method other than OFDM. For example, the first signal modulation method may be an OTFS modulation method or other delay Doppler modulation methods. The second signal modulation method refers to OFDM or other time-frequency domain signal modulation methods. The signal modulation method of an embodiment of the present application refers to, for example, a multi-carrier modulation method. The "modulation" described in the embodiment of the present application should be broadly understood as a "processing" of a signal.

[0050] Combine the following Figure 3 , the embodiments of the present application are introduced in detail.

[0051] Figure 3 A flowchart of a wireless communication method provided in an embodiment of the present application. Figure 3 The method 300 shown can be performed by a terminal device and 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.

[0052] See also Figure 3 , in step 310, the first communication device sends a first pilot signal to the second communication device.

[0053] Accordingly, in step 320, the second communication device receives the first pilot signal sent by the first communication device.

[0054] The first pilot signal may include, for example, a first synchronization signal to improve the synchronization accuracy of the terminal device; or, the first pilot signal may include a first channel status information reference signal (CSI-RS) to improve the estimation accuracy of the channel state of the terminal device. Alternatively, the first pilot signal may also include a first demodulation reference signal (DMRS) or other signals.

[0055] The first synchronization signal is used for downlink synchronization and / or uplink synchronization of the terminal device. For downlink synchronization, the first communication device is a network device and the second communication device is a terminal device; for uplink synchronization, the first communication device is a terminal device and the second communication device is a network device. For example, when the first synchronization signal is used for downlink synchronization of the terminal device, the first synchronization signal may include a primary synchronization signal (PSS) and / or a secondary synchronization signal (SSS); when the first synchronization signal is used for uplink synchronization of the terminal device, the first synchronization signal may include a random access preamble.

[0056] In the following, the technical solution of the embodiment of the present application is described by taking the first communication device as a network device and the second communication device as a terminal device as an example. At this time, the first synchronization signal is used for downlink synchronization. Among them, the first pilot signal is a pilot signal obtained based on the first signal modulation method, that is, the first pilot signal is a pilot signal obtained based on a modulation method other than OFDM. For example, the first pilot signal can be a pilot signal based on delay Doppler (for example, OTFS).

[0057] In this way, by transmitting the first synchronization signal in the delay Doppler domain, after the terminal device performs two-dimensional detection on the first synchronization signal, the resolution of the first synchronization signal can be improved through multi-dimensional processing, thereby providing higher-precision measurement results for subsequent high-speed data, high-order modulation, high-speed mobile scenarios, and more refined perception and measurement.

[0058] When the first pilot signal includes the first CSI-RS and the second pilot signal includes the second CSI-RS, after estimating the large-scale channel dropout based on the first CSI-RS, the second CSI-RS can be used to estimate the multipath and estimate the multipath delay and Doppler information.

[0059] In some implementations, method 300 may further include step 330 and step 340 .

[0060] In step 330, the first communications device sends a second pilot signal to the second communications device.

[0061] Accordingly, in step 340, the second communication device receives the second pilot signal sent by the first communication device.

[0062] The second pilot signal may include, for example, a second synchronization signal; or, the second pilot signal may include a second CSI-RS; or, the second pilot signal may also include a second DMRS or other signals.

[0063] The second synchronization signal is used for downlink synchronization and / or uplink synchronization of the terminal device. For downlink synchronization, the first communication device is a network device and the second communication device is a terminal device; for uplink synchronization, the first communication device is a terminal device and the second communication device is a network device. For example, when the second synchronization signal is used for downlink synchronization of the terminal device, the second synchronization signal may include PSS and / or SSS; when the second synchronization signal is used for uplink synchronization of the terminal device, the second synchronization signal may include a random access preamble.

[0064] The second pilot signal is a pilot signal obtained based on a second signal modulation method, that is, the second pilot signal is a pilot signal obtained based on OFDM.

[0065] As an example, the first pilot signal includes a first synchronization signal, the second pilot signal includes a second synchronization signal, and the second synchronization signal is a downlink synchronization signal, then the network device can send the second synchronization signal and the first synchronization signal to the terminal device. For another example, the first pilot signal includes a first synchronization signal, the second pilot signal includes a second synchronization signal, and the second synchronization signal is an uplink synchronization signal, then the terminal device can send the second synchronization signal and the first synchronization signal to the network device. For another example, the first pilot signal includes a first CSI-RS, and the second pilot signal includes a first CSI-RS, then the network device can send the second CSI-RS and the first CSI-RS to the terminal device.

[0066] It should be noted that the first signal modulation method and the second signal modulation method can be regarded as different multiple access methods or different waveforms. For example, the first signal modulation method can also be called a first multiple access method, a first waveform, or a first signal processing method, and the second signal modulation method can also be called a second multiple access method, a second waveform, or a second signal processing method, etc.

[0067] Considering that the existing standards are designed based on OFDM, designing new system standards completely out of OFDM will lead to huge engineering. And such processing has a great impact on the industrial landscape. Therefore, in the embodiment of the present application, it can also be based on the existing OFDM framework, by introducing other multiple access methods, to make up for the defects of OFDM, so as to design a solution in which multiple multiple access methods coexist, learn from each other's strengths and weaknesses, so that the system can adapt to various scenarios. In future wireless communication systems, in addition to supporting the current high-speed data communication, high reliability and low latency, and large connections, it is also necessary to support integrated sensing and communication (ISAC), air-ground integration, integrated artificial intelligence and communication, etc. These scenarios need to take advantage of various multiple access waveforms. Therefore, the embodiment of the present application proposes a method in which multiple multiple access methods (or waveforms) coexist, which can better support different needs in multiple scenarios in the future. In addition, the coexistence of multiple access methods (or waveforms) is also more conducive to giving play to the advantages of signal processing in the delay Doppler domain, and more accurately estimating the Doppler shift without introducing more computational complexity.

[0068] The following describes in detail the situation where multiple access modes (or multiple waveforms) coexist, that is, a first pilot signal based on a first signal modulation mode and a second pilot signal based on a second signal modulation mode coexist. When multiple multiple access modes (or multiple waveforms) coexist, pilot signals exist under different multiple access modes (or multiple waveforms), and these pilot signals may have different functions and detection times, thereby jointly improving the signal detection accuracy of the terminal device.

[0069] Take the following synchronization as an example, Figure 4 The process of downlink synchronization shown in FIG. In step 410, the terminal device may first receive the main synchronization information in the second synchronization signal and obtain the coarse synchronization information of the time; then, in step 420, the terminal device receives the auxiliary synchronization information in the second synchronization signal and obtains the fine synchronization information of the time; finally, in step 430, the terminal device receives the first synchronization signal to obtain the fine synchronization information of the time, where the fine synchronization means that the synchronization accuracy obtained in step 430 is higher than the synchronization accuracy obtained in step 420.

[0070] In some implementations, signal detection based on the first pilot signal is associated with a signal detection result based on the second pilot signal, or in other words, the signal detection process associated with the second pilot signal can depend on the result of the signal detection process associated with the first pilot signal. For example, synchronization based on the first synchronization signal is associated with synchronization based on the second synchronization signal, or in other words, the downlink synchronization process associated with the second synchronization signal can depend on the result of the downlink synchronization process associated with the first synchronization signal. For another example, channel estimation based on the first CSI-RS is associated with a channel estimation result based on the second CSI-RS, or in other words, the signal estimation process associated with the second CSI-RS can depend on the result of the channel estimation process associated with the first CSI-RS.

[0071] Take the following synchronization as an example, and continue to refer to Figure 4 Before performing downlink synchronization based on the first synchronization signal in step 430, downlink synchronization is first performed based on the second synchronization signal in steps 410 and 420. This is to reduce the high amount of computation generated when downlink synchronization is performed based solely on the second synchronization signal, thereby improving the accuracy of downlink synchronization without increasing the complexity of the terminal device.

[0072] Specifically, when the terminal device performs initial access, there is no information and it needs to smoothly scan the data within a cycle. Although there is a fast algorithm, the algorithm still has a high complexity due to the large amount of data processed. In addition, in the 5G scenario, due to the limitation of the device processing capacity, the synchronization signal is sent by beam scanning. In most cases, a synchronization signal block burst set (SSB burst) of the network device will contain 64 beams, and the beams are sent in different directions at different times. Users need to detect these beams separately when performing synchronization detection. If the terminal device performs receiving beam scanning, the detection complexity will increase in the form of the product of the number of beams. For example, if there are 64 transmitting beams and 32 receiving beams, then 64*32 initial search synchronizations are required. The complexity of OTFS itself is still high. For OTFS, the receiver does not know where to receive the target when it does not know the channel information. The peak can be found at the corresponding position to blindly detect OTFS. However, this will introduce additional complexity. The algorithm complexity of OTFS transformation is usually several times the amount of calculation of traditional OFDM receivers, which will greatly affect the efficiency of synchronization detection. Therefore, on the basis of downlink synchronization based on the first synchronization signal, the terminal device can know approximately the locations where the second synchronization signal is received, thereby reducing the complexity of downlink synchronization based on the second synchronization signal and will not introduce a large amount of calculation when improving the synchronization accuracy.

[0073] When performing downlink synchronization, the terminal device first detects the primary synchronization signal to obtain time synchronization information, and then detects the secondary synchronization signal to obtain fine time and frequency synchronization and complete cell ID information. To this end, when obtaining the initial synchronization information of the signal, the synchronization signal under OFDM is retained. When detecting the synchronization signal, the beam of the synchronization signal is obtained. If there is a receiving beam scan, the direction of the receiving beam is recorded.

[0074] If the terminal device does not have high requirements for synchronization accuracy, for example, the terminal device is in a low-speed moving scenario, then only steps 410 and 420 can be performed, that is, the terminal device completes the downlink synchronization part from step 410 to step 420. If the terminal device has high requirements for synchronization accuracy, for example, the terminal device is in a high-speed moving scenario, then it is also necessary to perform synchronization detection based on other signal modulation methods other than OFDM, and more accurate downlink synchronization can be achieved through steps 410 to 430.

[0075] When the terminal device needs to achieve more accurate downlink synchronization through steps 410 to 430, in some implementations, the time domain position of the first pilot signal can be determined by its time domain position relative to the second pilot signal. For example, the time domain position of the first synchronization signal can be determined by its time domain position relative to the second synchronization signal. As an example, there is a specific frequency offset between the time domain position of the second synchronization signal and the time domain position of the first synchronization signal, and the information of the frequency offset can be pre-agreed or indicated by the network device; or, the time domain position of the first synchronization signal can be the next time domain position for transmitting the synchronization signal after the time domain position of the second synchronization signal, that is, after the terminal device detects the second synchronization signal at a certain time domain position for transmitting the synchronization signal, it can detect the first synchronization signal at the next time domain position for transmitting the synchronization signal. At this time, the first synchronization signal and the second synchronization signal can also be regarded as a synchronization signal block formed by merging.

[0076] In some implementations, the frequency domain position of the first pilot signal may be adjacent to the frequency domain position of the second pilot signal. For example, the frequency domain position of the first synchronization signal is adjacent to the frequency domain position of the second synchronization signal. As an example, the frequency position corresponding to the first synchronization signal and / or the first signal modulation method is located at the high frequency end or the low frequency end of a certain frequency band, and is adjacent to the frequency band corresponding to the second synchronization signal and / or the second signal modulation method, which is beneficial for network equipment to schedule resources, and is also suitable for small bandwidth transmission such as narrowband Internet of Things (NB-IoT).

[0077] Taking downlink synchronization as an example, in some implementations, the terminal device may detect a physical broadcast channel (PBCH) (e.g., PBCH based on OFDM) after step 420; or, the terminal device may detect a PBCH (e.g., PBCH based on OFDM) after step 430. At this time, since more accurate downlink synchronization has been performed based on the first synchronization signal, a higher modulation order may be used for the PBCH, and master information block (MIB) information may be carried at a more efficient coding rate.

[0078] In some implementations, the network device may notify the terminal device of information related to the first pilot signal via a second synchronization signal. Taking downlink synchronization as an example, since step 430 is an optional option, that is, the first synchronization signal is not always transmitted, for example, in a scenario where the cell does not support high-speed mobility, it may not be necessary to transmit the first synchronization signal. To this end, the network device needs to notify the terminal device of the transmission status of the first synchronization signal. For example, the network device may notify the terminal device of information related to the first synchronization signal via a second synchronization signal. Below, a detailed description is given of how to use the second pilot signal to indicate information related to the first pilot signal.

[0079] In some implementations, the second pilot signal is used to indicate whether the current cell supports the first signal modulation mode and / or whether the current cell supports the first pilot signal. Among them, only when the current cell supports the first signal modulation mode and / or the current cell supports the first pilot signal, the cell will have the transmission of the first pilot signal. For example, taking downlink synchronization as an example, in step 310, when the current cell supports the first signal modulation mode and / or the current cell supports the first pilot signal, the network device sends the first pilot signal to the terminal device, and indicates to the terminal device through the second pilot signal that the current cell supports the first signal modulation mode and / or the current cell supports the first pilot signal; accordingly, in step 320, when the second indication information indicates that the current cell supports the first signal modulation mode and / or the current cell supports the first pilot signal, the terminal device receives the first pilot signal sent by the network device.

[0080] In some implementations, the frequency bands associated with the first pilot signal and the second pilot signal are different, or the frequency bands associated with the first signal modulation mode and the second signal modulation mode are different. The first pilot signal is sent and received only when the access frequency band of the terminal device is associated with the first pilot signal or the first signal modulation mode. For example, taking downlink synchronization as an example, in step 310, when the access frequency band of the terminal device is associated with the first pilot signal or the first signal modulation mode, the network device sends the first pilot signal to the terminal device; accordingly, in step 320, when the access frequency band of the terminal device is associated with the first pilot signal or the first signal modulation mode, the terminal device receives the first pilot signal.

[0081] For example, if the first pilot signal and / or the first signal modulation mode are supported on certain frequency bands (or, non-OFDM waveforms may be present on these frequency bands), the first pilot signal may be transmitted on these frequency bands; for another example, if the first pilot signal and / or the first signal modulation mode are not supported on certain frequency bands (or, non-OFDM waveforms may not be present on these frequency bands), the first pilot signal may not be transmitted on these frequency bands. For example, the frequency band is a frequency band shared by 5G and 6G. In order to better coexist between 6G and 5G systems, non-OFDM waveforms may not be supported on this frequency band; for another example, if the second pilot signal and / or the second signal modulation mode are supported on certain frequency bands, the second pilot signal may be transmitted on these frequency bands; for another example, if the first pilot signal and the second pilot signal are supported on certain frequency bands at the same time, or the first signal modulation mode and the second signal modulation mode are supported at the same time, both the first pilot signal and the second pilot signal may be transmitted on these frequency bands. The terminal device may determine whether it needs to receive or send the first pilot signal based on its access frequency band.

[0082] Furthermore, the frequency position for transmitting the first pilot signal can also be indicated by agreement or through a network device. For example, the first signal modulation method is associated with the first frequency band, that is, the first frequency band is a frequency band for transmitting non-OFDM waveforms. Furthermore, the first frequency band includes a sub-frequency band that supports the first signal modulation method, that is, the non-OFDM waveform is transmitted within the sub-frequency band within the first frequency band. Among them, the sub-frequency band that supports the first signal modulation method in the first frequency band may, for example, include: a sub-frequency band close to the high frequency end of the first frequency band; and / or, a sub-frequency band close to the low frequency end of the first frequency band. If the first pilot signal is transmitted at the high frequency end or the low frequency end of a certain frequency band, when the adjacent frequency band is an OFDM frequency band, it is more convenient to schedule OFDM resources, which is also conducive to estimating the signal of the OFDM frequency band.

[0083] For another example, the first pilot signal is associated with the second frequency band, that is, the first frequency band is a frequency band used to transmit the first pilot signal. Furthermore, the second frequency band includes a sub-frequency band that supports the first pilot signal, that is, the first pilot signal is transmitted within the sub-frequency band within the second frequency band. Among them, the sub-frequency band that supports the first pilot signal in the second frequency band may include, for example, one or more of the following: a sub-frequency band close to the high frequency end of the second frequency band; a sub-frequency band close to the low frequency end of the second frequency band; an intermediate frequency band between the high frequency band and the low frequency band; a sub-frequency band closer to the third frequency band between the high frequency band and the low frequency band. Among them, the third frequency band is a frequency band that supports the second signal modulation method and / or the second pilot signal.

[0084] In some implementations, the second pilot signal is used to indicate relevant information of the first pilot signal to help the terminal device better receive or send the first pilot signal. The relevant information of the first pilot signal, for example, includes one or more of the following: indication information for indicating whether the current cell supports the first signal modulation method; indication information for indicating whether the current cell supports the first pilot signal; time domain information of the first pilot signal; frequency domain information of the first pilot signal; synchronous signal broadcast channel block (SSB) index associated with the first pilot signal; subcarrier spacing associated with the first pilot signal.

[0085] In some implementations, the relevant information of the first pilot signal may be carried in the second pilot signal. For example, the relevant information of the first synchronization signal is carried in the second synchronization signal (e.g., the primary synchronization signal (or primary synchronization sequence) or the secondary synchronization signal (or secondary synchronization sequence)), the PBCH associated with the second pilot signal, the MIB associated with the second pilot signal, or the system information block (SIB1) associated with the second pilot signal.

[0086] For example, the primary synchronization signal, the secondary synchronization signal and the PBCH may constitute a synchronization signal block, wherein a bit may be carried in the PBCH to indicate whether the current cell includes the first synchronization signal, or to indicate whether the current cell supports the first signal modulation mode.

[0087] For another example, the secondary synchronization sequence can be used to indicate whether the current cell includes the first synchronization signal. Generally, the secondary synchronization sequence can indicate more than 300 cells. When the secondary synchronization sequence is used to indicate whether the current cell includes the first synchronization signal, more than 600 different sequences are required, wherein two sequences form a group, and one of the two sequences in this group indicates part of the cell identification information and indicates that the cell does not include the first synchronization signal or does not support the first signal modulation mode, and the other sequence indicates part of the cell identification information and indicates that the cell includes the first synchronization signal or supports the first signal modulation mode.

[0088] For another example, the secondary synchronization sequence can be used to indicate whether the current cell supports the first signal modulation mode. Generally, the secondary synchronization sequence can indicate more than 300 cells. When the secondary synchronization sequence is used to indicate whether the current cell supports the first signal modulation mode, more than 600 different sequences are required, wherein each two sequences form a group, and of the two sequences in this group, one sequence indicates part of the cell identification information and indicates that the cell does not include the first synchronization signal or does not support the first signal modulation mode, and the other sequence indicates part of the cell identification information and indicates that the cell includes the first synchronization signal or supports the first signal modulation mode.

[0089] For another example, the primary synchronization sequence may be used to indicate whether the current cell includes the first synchronization signal. Generally, the primary synchronization sequence may indicate three groups of cells. When the primary synchronization sequence is used to indicate whether the current cell includes the first synchronization signal, six different sequences are required, wherein two sequences form a group. Of the two sequences in this group, one sequence indicates partial information of the cell identifier and indicates that the cell does not include the first synchronization signal or does not support the first signal modulation method, and the other sequence indicates partial information of the cell identifier and indicates that the cell includes the first synchronization signal or supports the first signal modulation method.

[0090] For another example, the primary synchronization sequence may be used to indicate whether the current cell supports the first signal modulation mode. Generally, the primary synchronization sequence may indicate three groups of cells. When the primary synchronization sequence is used to indicate whether the current cell supports the first signal modulation mode, six different sequences are required, wherein two sequences form a group. Of the two sequences in this group, one sequence indicates partial information of the cell identifier and indicates that the cell does not include the first synchronization signal or does not support the first signal modulation mode, and the other sequence indicates partial information of the cell identifier and indicates that the cell includes the first synchronization signal or supports the first signal modulation mode.

[0091] For another example, the time domain resources and / or frequency domain resources of the first synchronization signal and / or its associated pilot signal can be indicated by SIB1 associated with the second synchronization signal. For the SSB defined by the cell, the terminal device can determine the time and frequency position of the first synchronization signal and / or its associated pilot signal according to the indication of SIB1 by detecting the SIB1 corresponding to the SSB defined by the cell.

[0092] In some implementations, the first pilot signal may be associated with a signal transmission direction. For example, the first pilot signal is associated with an SSB index. The association may, for example, refer to a quasi co-located (QCL) relationship or other association relationship. The first pilot signal may be transmitted in directions associated with certain SSB indexes, but not transmitted in directions associated with other SSB indexes.

[0093] For downlink synchronization, when the first synchronization signal and the second synchronization signal coexist, since the second synchronization signal is sent in the form of beam scanning, in an actual system, accurate downlink synchronization is only required in a specific direction, and accurate downlink synchronization may not be required in other directions. Figure 5 As shown, a base station deployed on the side of a highway covers the highway on one side and farmland on the other side. In this case, only certain SSB indexes (i.e., the SSB indexes transmitted on one side of the highway) need to have corresponding first synchronization signals, while other SSB indexes (i.e., the SSB indexes transmitted on the farmland side) do not need corresponding first synchronization signals. Therefore, when the first synchronization signal and the second synchronization signal coexist, the first synchronization signal can be transmitted only in the direction corresponding to some SSB indexes, and this part of information needs to be notified to the terminal device.

[0094] For example, in some implementations, the first synchronization signal is associated with an SSB index, and the SSB index associated with the first synchronization signal is carried in the PBCH or MIB associated with the second synchronization signal, or the SSB index associated with the first synchronization signal is carried in the broadcast signaling. In other words, the SSB index corresponding to the direction of the first synchronization signal can be indicated by the PBCH / MIB or broadcast signaling associated with the second synchronization signal.

[0095] As an example, the PBCH or MIB associated with the second synchronization signal includes 1 indication bit for indicating whether there is a first synchronization signal in the direction corresponding to the SSB index associated therewith. Among them, for different SSB indexes, the value of the indication bit in the corresponding PBCH or MIB may be different, that is, each indication bit only indicates whether there is a first synchronization signal in the direction corresponding to its corresponding SSB index; of course, the indication bit may also be used to indicate whether there is a first synchronization signal in the directions corresponding to multiple SSB indexes, for example, indicating that there are first synchronization signals in the directions corresponding to multiple SSB indexes at the same time, or indicating that there are no first synchronization signals in the directions corresponding to multiple SSB indexes at the same time, that is, the values ​​indicated by the bit corresponding to different SSB indexes are the same.

[0096] For another example, the broadcast signaling may include a bit string, which includes multiple bits corresponding to multiple SSB indexes, wherein each of the multiple bits is used to indicate whether the corresponding SSB index is associated with the first synchronization signal. For example, a bit value of 1 in the bit string indicates that the first synchronization signal is transmitted in the direction of the corresponding SSB index, and a bit value of 0 indicates that the first synchronization signal is not transmitted in the direction of the corresponding SSB index.

[0097] For another example, the broadcast signaling may include one indication bit, which is used to indicate whether the currently transmitted SSB index is associated with the first synchronization signal.

[0098] Among them, the values ​​of the indication bits corresponding to different SSB indexes may be the same or different. Specifically, for different SSB indexes, the values ​​of the indication bits in the corresponding PBCH or MIB may be different, that is, each indication bit only indicates whether there is a first synchronization signal in the direction corresponding to its corresponding SSB index; of course, the indication bit may also be used to indicate whether there is a first synchronization signal in the directions corresponding to multiple SSB indexes, for example, indicating that there are first synchronization signals in the directions corresponding to multiple SSB indexes at the same time, or indicating that there are no first synchronization signals in the directions corresponding to multiple SSB indexes at the same time, that is, the values ​​indicated by the bits corresponding to different SSB indexes are the same.

[0099] The larger the carrier spacing of the first pilot signal, the larger the Doppler shift that can be estimated. Therefore, when the first signal modulation method is adopted, a larger subcarrier spacing is expected. Therefore, in some implementations, the carrier spacing of the first pilot signal may be different from the carrier spacing of the second pilot signal. For example, the subcarrier spacing used to transmit the first pilot signal is the first subcarrier spacing, and the subcarrier spacing used to transmit the second pilot signal is the second subcarrier spacing, wherein the first subcarrier spacing is different from the second subcarrier spacing. Further, the first subcarrier spacing may be configured to be larger than the second subcarrier spacing, for example, the first subcarrier spacing is N times (for example, 1 times, 1.5 times, or 2 times, etc.) the second subcarrier spacing.

[0100] For example, it may be agreed or indicated by a network device that the subcarrier spacing information corresponding to the first pilot signal or the first signal modulation mode supported on a certain frequency band, and / or the subcarrier spacing information corresponding to the second pilot signal or the second signal modulation mode. The subcarrier spacing information may include one or more subcarrier spacings, or include a certain subcarrier set. For example, the subcarrier spacing information corresponding to the first pilot signal or the first signal modulation mode may be 120KHz, 240KHz, or subcarrier set 1 (including 120KHz and 240KHz); the subcarrier spacing information corresponding to the second pilot signal or the second signal modulation mode may be 15KHz, 30KHzz, 60KHz, or subcarrier set 2 (including 15KHz, 30KHzz, 60KHz). The above subcarrier spacing information may be carried in SIB1 or MIB information, for example.

[0101] Based on the technical solution of the embodiment of the present application, signal transmission can be performed based on methods other than OFDM, such as transmission of pilot signals, and a transmission resource allocation scheme for pilot signals under a delay Doppler waveform is provided. At the same time, in view of the coexistence of multiple multiple access modes (or multiple waveforms), a transmission (or detection) scheme for pilot signals is provided, so that pilot signals under different multiple access modes (or multiple waveforms) can complement each other, and relatively accurate estimation results in various aspects such as time and frequency domains are obtained, providing high-precision guarantees for subsequent access, communication, positioning measurement, perception measurement, and link measurement.

[0102] Combination of the above Figures 1 to 5 , describes the method embodiment of the present application in detail, and the following is combined with Figure 6 to Figure 7 , 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.

[0103] Figure 6 A schematic diagram of the structure of a terminal device provided in an embodiment of the present application. Figure 6 The terminal device 600 shown may include a transceiver unit 610. The transceiver unit 610 is configured to receive or send a first pilot signal, wherein the first pilot signal is a pilot signal obtained based on a first signal modulation method, and the first signal modulation method is a modulation method other than OFDM.

[0104] In some implementations, the first pilot signal includes a first synchronization signal.

[0105] In some implementations, the transceiver unit 610 is further used to: receive or send a second pilot signal, wherein the second pilot signal is a pilot signal obtained based on a second signal modulation method, and the second signal modulation method is OFDM.

[0106] In some implementations, the second pilot signal includes a second synchronization signal.

[0107] In some implementations, the second synchronization signal includes PSS and / or SSS.

[0108] In some implementations, the second pilot signal is also used to indicate whether the current cell supports the first signal modulation method and / or whether the current cell supports the first pilot signal; wherein the transceiver unit 610 is specifically used to: when the second pilot signal indicates that the current cell supports the first signal modulation method and / or the current cell supports the first pilot signal, the terminal device receives or sends the first pilot signal.

[0109] In some implementations, the first pilot signal and the second pilot signal are associated with different frequency bands, or the first signal modulation method and the second signal modulation method are associated with different frequency bands; wherein the transceiver unit 610 is specifically used to: when the access frequency band of the terminal device is associated with the first pilot signal or the first signal modulation method, the terminal device receives or sends the first pilot signal.

[0110] In some implementations, the second pilot signal is also used to indicate relevant information of the first pilot signal, and the relevant information of the first pilot signal includes one or more of the following: indication information used to indicate whether the current cell supports the first signal modulation method; indication information used to indicate whether the current cell supports the first pilot signal; time domain information of the first pilot signal; frequency domain information of the first pilot signal; SSB index associated with the first pilot signal; and subcarrier spacing associated with the first pilot signal.

[0111] In some implementations, the relevant information of the first pilot signal is carried by: the second pilot signal; or the PBCH associated with the second pilot signal; or the MIB associated with the second pilot signal; or the SIB1 associated with the second pilot signal.

[0112] In some implementations, the first signal modulation mode is associated with a first frequency band, and the sub-frequency band in the first frequency band that supports the first signal modulation mode includes: a sub-frequency band in the first frequency band close to a high frequency end; and / or a sub-frequency band in the first frequency band close to a low frequency end.

[0113] In some implementations, the first pilot signal is associated with a second frequency band, and a sub-frequency band in the second frequency band that supports the first pilot signal includes one or more of the following: a sub-frequency band in the second frequency band close to the high frequency end; a sub-frequency band in the second frequency band close to the low frequency end; an intermediate frequency band between the high frequency band and the low frequency band; a sub-frequency band in the high frequency band and the low frequency band that is closer to a third frequency band; wherein the third frequency band is a frequency band that supports a second signal modulation method and / or a second pilot signal.

[0114] In some implementations, the time domain position of the first pilot signal is the next time domain position for transmitting the pilot signal after the time domain position of the second pilot signal; and / or the frequency domain position of the first pilot signal is adjacent to the frequency domain position of the second pilot signal.

[0115] In some implementations, the first pilot signal is associated with an SSB index, and the SSB index associated with the first pilot signal is carried in the PBCH or MIB associated with the second pilot signal, or is carried in broadcast signaling.

[0116] In some implementations, the broadcast signaling includes a bit string, which includes multiple bits corresponding to multiple SSB indexes, wherein each bit of the multiple bits is used to indicate whether its corresponding SSB index is associated with the first pilot signal.

[0117] In some implementations, the broadcast signaling includes one indication bit, and the indication bit is used to indicate whether the SSB index currently transmitted is associated with the first pilot signal.

[0118] In some implementations, the values ​​of the indication bits corresponding to different SSB indexes are the same or different.

[0119] In some implementations, the subcarrier spacing used to transmit the first pilot signal is a first subcarrier spacing, and the subcarrier spacing used to transmit the second pilot signal is a second subcarrier spacing, wherein the first subcarrier spacing is different from the second subcarrier spacing.

[0120] In some implementations, the first subcarrier spacing is greater than the second subcarrier spacing.

[0121] In some implementations, the first signal modulation method is OTFS.

[0122] It can be understood that the transceiver unit 610 can be, for example, a transceiver 830. In addition, optionally, the terminal device 600 further includes a processor 810 and a memory 820, for details, see Figure 8 .

[0123] Figure 7 A schematic diagram of the structure of a network device provided in an embodiment of the present application. Figure 7 The network device 700 shown may include a transceiver unit 710. The transceiver unit 710 is configured to send or receive a first pilot signal, wherein the first pilot signal is a pilot signal obtained based on a first signal modulation method, and the first signal modulation method is a modulation method other than OFDM.

[0124] In some implementations, the first pilot signal includes a first synchronization signal.

[0125] In some implementations, the transceiver unit 710 is further used to: send or receive a second pilot signal, wherein the second pilot signal is a pilot signal obtained based on a second signal modulation method, and the second signal modulation method is OFDM.

[0126] In some implementations, the second pilot signal includes a second synchronization signal.

[0127] In some implementations, the second synchronization signal includes PSS and / or SSS.

[0128] In some implementations, the second pilot signal is also used to indicate whether the current cell supports the first signal modulation method and / or whether the current cell supports the first pilot signal; wherein the transceiver unit 710 is specifically used to: when the current cell supports the first signal modulation method and / or the current cell supports the first pilot signal, the network device sends or receives the first pilot signal.

[0129] In some implementations, the first pilot signal and the second pilot signal are associated with different frequency bands, or the first signal modulation method and the second signal modulation method are associated with different frequency bands; wherein the transceiver unit 710 is specifically used to: when the access frequency band of the terminal device is associated with the first pilot signal or the first signal modulation method, the network device sends or receives the first pilot signal.

[0130] In some implementations, the second pilot signal is also used to indicate relevant information of the first pilot signal, and the relevant information of the first pilot signal includes one or more of the following: indication information used to indicate whether the current cell supports the first signal modulation method; indication information used to indicate whether the current cell supports the first pilot signal; time domain information of the first pilot signal; frequency domain information of the first pilot signal; SSB index associated with the first pilot signal; and subcarrier spacing associated with the first pilot signal.

[0131] In some implementations, the relevant information of the first pilot signal is carried by: the second pilot signal; or the PBCH associated with the second pilot signal; or the MIB associated with the second pilot signal; or the SIB1 associated with the second pilot signal.

[0132] In some implementations, the first signal modulation mode is associated with a first frequency band, and the sub-frequency band in the first frequency band that supports the first signal modulation mode includes: a sub-frequency band in the first frequency band close to a high frequency end; and / or a sub-frequency band in the first frequency band close to a low frequency end.

[0133] In some implementations, the first pilot signal is associated with a second frequency band, and a sub-frequency band in the second frequency band that supports the first pilot signal includes one or more of the following: a sub-frequency band in the second frequency band close to the high frequency end; a sub-frequency band in the second frequency band close to the low frequency end; an intermediate frequency band between the high frequency band and the low frequency band; a sub-frequency band in the high frequency band and the low frequency band that is closer to a third frequency band; wherein the third frequency band is a frequency band that supports a second signal modulation method and / or a second pilot signal.

[0134] In some implementations, the time domain position of the first pilot signal is the next time domain position for transmitting the pilot signal after the time domain position of the second pilot signal; and / or the frequency domain position of the first pilot signal is adjacent to the frequency domain position of the second pilot signal.

[0135] In some implementations, the first pilot signal is associated with an SSB index, and the SSB index associated with the first pilot signal is carried in the PBCH or MIB associated with the second pilot signal, or is carried in broadcast signaling.

[0136] In some implementations, the broadcast signaling includes a bit string, which includes multiple bits corresponding to multiple SSB indexes, wherein each bit of the multiple bits is used to indicate whether its corresponding SSB index is associated with the first pilot signal.

[0137] In some implementations, the broadcast signaling includes one indication bit, and the indication bit is used to indicate whether the SSB index currently transmitted is associated with the first pilot signal.

[0138] In some implementations, the values ​​of the indication bits corresponding to different SSB indexes are the same or different.

[0139] In some implementations, the subcarrier spacing used to transmit the first pilot signal is a first subcarrier spacing, and the subcarrier spacing used to transmit the second pilot signal is a second subcarrier spacing, wherein the first subcarrier spacing is different from the second subcarrier spacing.

[0140] In some implementations, the first subcarrier spacing is greater than the second subcarrier spacing.

[0141] In some implementations, the first signal modulation method is OTFS.

[0142] It can be understood that the transceiver unit 710 can be, for example, a transceiver 830. In addition, optionally, the network device 700 further includes a processor 810 and a memory 820, for details, see Figure 8 .

[0143] Figure 8 It is a schematic structural diagram of a device for communication according to an embodiment of the present application. Figure 8 The dotted line shown in indicates that the unit or module is optional. The apparatus 800 may be used to implement the method described in the above method embodiment. The apparatus 800 may be, for example, a chip, a terminal device or a network device.

[0144] The device 800 may include one or more processors 810. The processor 810 may support the device 800 to implement the method described in the aforementioned method embodiment. The processor 810 may be a general-purpose processor or a special-purpose processor. For example, the processor 810 may be a central processing unit (CPU). Alternatively, the processor 810 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.

[0145] The apparatus 800 may further include one or more memories 820. The memory 820 stores a program, which can be executed by the processor 810, so that the processor 810 executes the method described in the above method embodiment. The memory 820 may be independent of the processor 810, or may be integrated in the processor 810.

[0146] The apparatus 800 may further include a transceiver 830. The processor 810 may communicate with other devices or chips through the transceiver 830. For example, the processor 810 may transmit and receive data with other devices or chips through the transceiver 830.

[0147] The embodiment of the present application also provides a communication system. The communication system includes the above-mentioned terminal device and network device. In some implementations, the system also includes other devices that interact with the terminal device and the network device.

[0148] The present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to a terminal device or a network device provided in the present application, and the program enables a computer to execute the method performed by the terminal device or the network device in each embodiment of the present application.

[0149] 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 terminal device or network device provided in the embodiment of the present application, and the program enables the computer to execute the method performed by the terminal device or network device in each embodiment of the present application.

[0150] The embodiment of the present application also provides a computer program. The computer program can be applied to the terminal device or network device provided in the embodiment of the present application, and the computer program enables a computer to execute the method executed by the terminal device or network device in each embodiment of the present application.

[0151] 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.

[0152] 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.

[0153] 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.

[0154] 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.

[0155] 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 a device (for example, including a terminal device and a network device), and the present application does not limit the specific implementation method. For example, pre-definition can refer to what is defined in the protocol.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] 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.

[0161] 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.

[0162] 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)).

[0163] 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: The terminal device receives or sends a first pilot signal, wherein the first pilot signal is a synchronization signal obtained based on a first signal modulation method, and the first signal modulation method is a modulation method other than orthogonal frequency division multiplexing OFDM.

2. The method according to claim 1, characterized in that The first pilot signal includes a first synchronization signal.

3. The method according to claim 1 or 2, characterized in that: The method further comprises: The terminal device receives or sends a second pilot signal, wherein the second pilot signal is a synchronization signal obtained based on a second signal modulation method, and the second signal modulation method is OFDM.

4. The method according to claim 3, characterized in that The second pilot signal includes a second synchronization signal.

5. The method according to claim 4, characterized in that The second synchronization signal includes a primary synchronization signal PSS and / or a secondary synchronization signal SSS.

6. The method according to any one of claims 3 to 5, characterized in that The second pilot signal is further used to indicate whether the current cell supports the first signal modulation mode and / or whether the current cell supports the first pilot signal; The terminal device receiving or sending a first pilot signal includes: When the second pilot signal indicates that the current cell supports the first signal modulation mode and / or the current cell supports the first pilot signal, the terminal device receives or sends the first pilot signal.

7. The method according to any one of claims 3 to 6, characterized in that The first pilot signal and the second pilot signal are associated with different frequency bands, or the first signal modulation method and the second signal modulation method are associated with different frequency bands; The terminal device receiving or sending a first pilot signal includes: When the access frequency band of the terminal device is associated with the first pilot signal or the first signal modulation mode, the terminal device receives or sends the first pilot signal.

8. The method according to any one of claims 3 to 7, characterized in that The second pilot signal is further used to indicate relevant information of the first pilot signal, where the relevant information of the first pilot signal includes one or more of the following: Indication information used to indicate whether the current cell supports the first signal modulation mode; Indication information used to indicate whether the current cell supports the first pilot signal; time domain information of the first pilot signal; frequency domain information of the first pilot signal; A synchronization signal broadcast channel block SSB index associated with the first pilot signal; The subcarrier spacing associated with the first pilot signal.

9. The method according to claim 8, characterized in that The relevant information of the first pilot signal is carried in: the second pilot signal; or, A physical broadcast channel PBCH associated with the second pilot signal; or, The second pilot signal is associated with a master information block MIB; or, The second pilot signal is associated with a system information block SIB1.

10. The method according to any one of claims 1 to 9, characterized in that The first signal modulation mode is associated with a first frequency band, and the sub-frequency bands in the first frequency band that support the first signal modulation mode include: a sub-frequency band close to the high frequency end in the first frequency band; and / or, A sub-frequency band close to the low frequency end in the first frequency band.

11. The method according to any one of claims 1 to 10, characterized in that The first pilot signal is associated with a second frequency band, and a sub-frequency band in the second frequency band that supports the first pilot signal includes one or more of the following: A sub-frequency band close to the high frequency end in the second frequency band; A sub-frequency band close to the low frequency end in the second frequency band; An intermediate frequency band between the high frequency band and the low frequency band; A sub-frequency band of the high frequency band and the low frequency band that is closer to the third frequency band; The third frequency band is a frequency band that supports the second signal modulation mode and / or the second pilot signal.

12. The method according to any one of claims 1 to 11, characterized in that The time domain position of the first pilot signal is the next time domain position for transmitting the pilot signal after the time domain position of the second pilot signal; and / or the frequency domain position of the first pilot signal is adjacent to the frequency domain position of the second pilot signal.

13. The method according to any one of claims 1 to 12, characterized in that The first pilot signal is associated with an SSB index, and the SSB index associated with the first pilot signal is carried in the PBCH or MIB associated with the second pilot signal, or is carried in broadcast signaling.

14. The method according to claim 13, characterized in that The broadcast signaling includes a bit string, the bit string includes a plurality of bits corresponding to a plurality of SSB indexes, wherein each bit in the plurality of bits is used to indicate whether the SSB index corresponding to the bit is associated with the first pilot signal; or, The broadcast signaling includes 1 indication bit, and the indication bit is used to indicate whether the SSB index currently transmitted is associated with the first pilot signal, wherein the value of the indication bit corresponding to different SSB indexes is the same or different.

15. The method according to any one of claims 1 to 14, characterized in that The subcarrier spacing used to transmit the first pilot signal is a first subcarrier spacing, and the subcarrier spacing used to transmit the second pilot signal is a second subcarrier spacing, wherein the first subcarrier spacing is different from the second subcarrier spacing.

16. The method according to claim 15, characterized in that The first subcarrier spacing is greater than the second subcarrier spacing.

17. The method according to any one of claims 1 to 16, characterized in that The first signal modulation mode is orthogonal time-frequency space (OTFS).

18. A wireless communication method, characterized in that: include: The network device sends or receives a first pilot signal, wherein the first pilot signal is a pilot signal obtained based on a first signal modulation method, and the first signal modulation method is a modulation method other than orthogonal frequency division multiplexing OFDM.

19. The method according to claim 18, characterized in that The first pilot signal includes a first synchronization signal.

20. The method according to claim 18 or 19, characterized in that The method further comprises: The network device sends or receives a second pilot signal, wherein the second pilot signal is a pilot signal obtained based on a second signal modulation method, and the second signal modulation method is OFDM.

21. The method according to claim 20, characterized in that The second pilot signal includes a second synchronization signal.

22. The method according to claim 21, characterized in that The second synchronization signal includes a primary synchronization signal PSS and / or a secondary synchronization signal SSS.

23. The method according to any one of claims 20 to 22, characterized in that The second pilot signal is further used to indicate whether the current cell supports the first signal modulation mode and / or whether the current cell supports the first pilot signal; The network device sending or receiving a first pilot signal includes: In a case where the current cell supports the first signal modulation mode and / or the current cell supports the first pilot signal, the network device sends or receives the first pilot signal.

24. The method according to any one of claims 20 to 23, characterized in that The first pilot signal and the second pilot signal are associated with different frequency bands, or the first signal modulation method and the second signal modulation method are associated with different frequency bands; The network device sending or receiving a first pilot signal includes: When the access frequency band of the terminal device is associated with the first pilot signal or the first signal modulation method, the network device sends or receives the first pilot signal.

25. The method according to any one of claims 20 to 24, characterized in that The second pilot signal is further used to indicate relevant information of the first pilot signal, where the relevant information of the first pilot signal includes one or more of the following: Indication information used to indicate whether the current cell supports the first signal modulation mode; Indication information used to indicate whether the current cell supports the first pilot signal; time domain information of the first pilot signal; frequency domain information of the first pilot signal; A synchronization signal broadcast channel block SSB index associated with the first pilot signal; The subcarrier spacing associated with the first pilot signal.

26. The method according to claim 25, characterized in that The relevant information of the first pilot signal is carried in: the second pilot signal; or, A physical broadcast channel PBCH associated with the second pilot signal; or, The second pilot signal is associated with a master information block MIB; or, The second pilot signal is associated with a system information block SIB1.

27. The method according to any one of claims 18 to 26, characterized in that The first signal modulation mode is associated with a first frequency band, and the sub-frequency bands in the first frequency band that support the first signal modulation mode include: a sub-frequency band close to the high frequency end in the first frequency band; and / or, A sub-frequency band close to the low frequency end in the first frequency band.

28. The method according to any one of claims 18 to 27, characterized in that The first pilot signal is associated with a second frequency band, and a sub-frequency band in the second frequency band that supports the first pilot signal includes one or more of the following: A sub-frequency band close to the high frequency end in the second frequency band; A sub-frequency band close to the low frequency end in the second frequency band; An intermediate frequency band between the high frequency band and the low frequency band; A sub-frequency band of the high frequency band and the low frequency band that is closer to the third frequency band; The third frequency band is a frequency band that supports the second signal modulation mode and / or the second pilot signal.

29. The method according to any one of claims 18 to 28, characterized in that The time domain position of the first pilot signal is the next time domain position for transmitting the pilot signal after the time domain position of the second pilot signal; and / or the frequency domain position of the first pilot signal is adjacent to the frequency domain position of the second pilot signal.

30. The method according to any one of claims 18 to 29, characterized in that The first pilot signal is associated with an SSB index, and the SSB index associated with the first pilot signal is carried in a PBCH or MIB associated with the second pilot signal, or carried in broadcast signaling; or, The broadcast signaling includes 1 indication bit, and the indication bit is used to indicate whether the SSB index currently transmitted is associated with the first pilot signal, wherein the value of the indication bit corresponding to different SSB indexes is the same or different.

31. The method according to claim 30, characterized in that The broadcast signaling includes a bit string, which includes multiple bits corresponding to multiple SSB indexes, wherein each bit of the multiple bits is used to indicate whether the SSB index corresponding to it is associated with the first pilot signal.

32. The method according to any one of claims 18 to 31, characterized in that The subcarrier spacing used to transmit the first pilot signal is a first subcarrier spacing, and the subcarrier spacing used to transmit the second pilot signal is a second subcarrier spacing, wherein the first subcarrier spacing is different from the second subcarrier spacing.

33. The method according to claim 32, characterized in that The first subcarrier spacing is greater than the second subcarrier spacing.

34. The method according to any one of claims 18 to 33, characterized in that The first signal modulation mode is orthogonal time-frequency space (OTFS).

35. A terminal device, characterized in that: include: The transceiver unit is used to receive or send a first pilot signal, wherein the first pilot signal is a pilot signal obtained based on a first signal modulation method, and the first signal modulation method is a modulation method other than orthogonal frequency division multiplexing OFDM.

36. The terminal device according to claim 35, characterized in that: The first pilot signal includes a first synchronization signal.

37. The terminal device according to claim 35 or 36, characterized in that: The transceiver unit is also used for: A second pilot signal is received or sent, wherein the second pilot signal is a pilot signal obtained based on a second signal modulation method, and the second signal modulation method is OFDM.

38. The terminal device according to claim 37, characterized in that: The second pilot signal includes a second synchronization signal.

39. The terminal device according to claim 38, characterized in that: The second synchronization signal includes a primary pilot signal PSS and / or a secondary pilot signal SSS.

40. The terminal device according to any one of claims 37 to 39, characterized in that: The second pilot signal is further used to indicate whether the current cell supports the first signal modulation mode and / or whether the current cell supports the first pilot signal; The transceiver unit is specifically used for: When the second pilot signal indicates that the current cell supports the first signal modulation mode and / or the current cell supports the first pilot signal, the terminal device receives or sends the first pilot signal.

41. The terminal device according to any one of claims 37 to 40, characterized in that: The first pilot signal and the second pilot signal are associated with different frequency bands, or the first signal modulation method and the second signal modulation method are associated with different frequency bands; The transceiver unit is specifically used for: When the access frequency band of the terminal device is associated with the first pilot signal or the first signal modulation mode, the terminal device receives or sends the first pilot signal.

42. The terminal device according to any one of claims 37 to 41, characterized in that: The second pilot signal is further used to indicate relevant information of the first pilot signal, where the relevant information of the first pilot signal includes one or more of the following: Indication information used to indicate whether the current cell supports the first signal modulation mode; Indication information used to indicate whether the current cell supports the first pilot signal; time domain information of the first pilot signal; frequency domain information of the first pilot signal; A synchronization signal broadcast channel block SSB index associated with the first pilot signal; The subcarrier spacing associated with the first pilot signal.

43. The terminal device according to claim 42, characterized in that: The relevant information of the first pilot signal is carried in: the second pilot signal; or, A physical broadcast channel PBCH associated with the second pilot signal; or, The second pilot signal is associated with a master information block MIB; or, The second pilot signal is associated with a system information block SIB1.

44. The terminal device according to any one of claims 35 to 43, characterized in that: The first signal modulation mode is associated with a first frequency band, and the sub-frequency bands in the first frequency band that support the first signal modulation mode include: a sub-frequency band close to the high frequency end in the first frequency band; and / or, A sub-frequency band close to the low frequency end in the first frequency band.

45. The terminal device according to any one of claims 35 to 44, characterized in that: The first pilot signal is associated with a second frequency band, and a sub-frequency band in the second frequency band that supports the first pilot signal includes one or more of the following: A sub-frequency band close to the high frequency end in the second frequency band; A sub-frequency band close to the low frequency end in the second frequency band; An intermediate frequency band between the high frequency band and the low frequency band; A sub-frequency band of the high frequency band and the low frequency band that is closer to the third frequency band; The third frequency band is a frequency band that supports the second signal modulation mode and / or the second pilot signal.

46. ​​The terminal device according to any one of claims 35 to 45, characterized in that: The time domain position of the first pilot signal is the next time domain position for transmitting the pilot signal after the time domain position of the second pilot signal; and / or the frequency domain position of the first pilot signal is adjacent to the frequency domain position of the second pilot signal.

47. The terminal device according to any one of claims 35 to 46, characterized in that: The first pilot signal is associated with an SSB index, and the SSB index associated with the first pilot signal is carried in the PBCH or MIB associated with the second pilot signal, or is carried in broadcast signaling.

48. The terminal device according to claim 47, characterized in that: The broadcast signaling includes a bit string, the bit string includes a plurality of bits corresponding to a plurality of SSB indexes, wherein each bit in the plurality of bits is used to indicate whether the SSB index corresponding to the bit is associated with the first pilot signal; or, The broadcast signaling includes 1 indication bit, and the indication bit is used to indicate whether the SSB index currently transmitted is associated with the first pilot signal, wherein the value of the indication bit corresponding to different SSB indexes is the same or different.

49. The terminal device according to any one of claims 35 to 48, characterized in that: The subcarrier spacing used to transmit the first pilot signal is a first subcarrier spacing, and the subcarrier spacing used to transmit the second pilot signal is a second subcarrier spacing, wherein the first subcarrier spacing is different from the second subcarrier spacing.

50. The terminal device according to claim 49, characterized in that: The first subcarrier spacing is greater than the second subcarrier spacing.

51. The terminal device according to any one of claims 35 to 50, characterized in that: The first signal modulation mode is orthogonal time-frequency space (OTFS).

52. A network device, characterized in that: include: The transceiver unit is used to send or receive a first pilot signal, wherein the first pilot signal is a pilot signal obtained based on a first signal modulation method, and the first signal modulation method is a modulation method other than orthogonal frequency division multiplexing OFDM.

53. The network device according to claim 52, characterized in that: The first pilot signal includes a first synchronization signal.

54. The network device according to claim 52 or 53, characterized in that: The transceiver unit is also used for: A second pilot signal is sent or received, wherein the second pilot signal is a pilot signal obtained based on a second signal modulation method, and the second signal modulation method is OFDM.

55. The network device according to claim 54, characterized in that The second pilot signal includes a second synchronization signal.

56. The network device according to claim 55, characterized in that The second synchronization signal includes a primary synchronization signal PSS and / or a secondary synchronization signal SSS.

57. The network device according to any one of claims 54 to 56, characterized in that: The second pilot signal is further used to indicate whether the current cell supports the first signal modulation mode and / or whether the current cell supports the first pilot signal; The transceiver unit is specifically used for: In a case where the current cell supports the first signal modulation mode and / or the current cell supports the first pilot signal, the network device sends or receives the first pilot signal.

58. The network device according to any one of claims 54 to 57, characterized in that: The first pilot signal and the second pilot signal are associated with different frequency bands, or the first signal modulation method and the second signal modulation method are associated with different frequency bands; The transceiver unit is specifically used for: When the access frequency band of the terminal device is associated with the first pilot signal or the first signal modulation method, the network device sends or receives the first pilot signal.

59. The network device according to any one of claims 54 to 58, characterized in that: The second pilot signal is further used to indicate relevant information of the first pilot signal, where the relevant information of the first pilot signal includes one or more of the following: Indication information used to indicate whether the current cell supports the first signal modulation mode; Indication information used to indicate whether the current cell supports the first pilot signal; time domain information of the first pilot signal; frequency domain information of the first pilot signal; A synchronization signal broadcast channel block SSB index associated with the first pilot signal; The subcarrier spacing associated with the first pilot signal.

60. The network device according to claim 59, characterized in that The relevant information of the first pilot signal is carried in: the second pilot signal; or, A physical broadcast channel PBCH associated with the second pilot signal; or, The second pilot signal is associated with a master information block MIB; or, The second pilot signal is associated with a system information block SIB1.

61. The network device according to any one of claims 52 to 60, characterized in that: The first signal modulation mode is associated with a first frequency band, and the sub-frequency bands in the first frequency band that support the first signal modulation mode include: a sub-frequency band close to the high frequency end in the first frequency band; and / or, A sub-frequency band close to the low frequency end in the first frequency band.

62. The network device according to any one of claims 52 to 61, characterized in that: The first pilot signal is associated with a second frequency band, and a sub-frequency band in the second frequency band that supports the first pilot signal includes one or more of the following: A sub-frequency band close to the high frequency end in the second frequency band; A sub-frequency band close to the low frequency end in the second frequency band; An intermediate frequency band between the high frequency band and the low frequency band; A sub-frequency band of the high frequency band and the low frequency band that is closer to the third frequency band; The third frequency band is a frequency band that supports the second signal modulation mode and / or the second pilot signal.

63. The network device according to any one of claims 52 to 62, characterized in that: The time domain position of the first pilot signal is the next time domain position for transmitting the pilot signal after the time domain position of the second pilot signal; and / or the frequency domain position of the first pilot signal is adjacent to the frequency domain position of the second pilot signal.

64. The network device according to any one of claims 52 to 63, characterized in that: The first pilot signal is associated with an SSB index, and the SSB index associated with the first pilot signal is carried in the PBCH or MIB associated with the second pilot signal, or is carried in broadcast signaling.

65. The network device according to claim 64, characterized in that The broadcast signaling includes a bit string, the bit string includes a plurality of bits corresponding to a plurality of SSB indexes, wherein each bit in the plurality of bits is used to indicate whether the SSB index corresponding to the bit is associated with the first pilot signal; or, The broadcast signaling includes 1 indication bit, and the indication bit is used to indicate whether the SSB index currently transmitted is associated with the first pilot signal, wherein the value of the indication bit corresponding to different SSB indexes is the same or different.

66. The network device according to any one of claims 52 to 65, characterized in that: The subcarrier spacing used to transmit the first pilot signal is a first subcarrier spacing, and the subcarrier spacing used to transmit the second pilot signal is a second subcarrier spacing, wherein the first subcarrier spacing is different from the second subcarrier spacing.

67. The network device according to claim 66, characterized in that The first subcarrier spacing is greater than the second subcarrier spacing.

68. The network device according to any one of claims 52 to 67, characterized in that: The first signal modulation mode is orthogonal time-frequency space (OTFS).

69. A terminal device, characterized in that: It comprises 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 terminal device executes the method according to any one of claims 1 to 17.

70. A network device, characterized in that: It comprises 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 network device executes the method according to any one of claims 18 to 34.

71. 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 34.

72. 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 34.

73. 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 34.

74. 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 34.

75. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 1 to 34.

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