Signal processing method, apparatus, and communication device

Abstract

The application discloses a signal processing method, device and communication equipment, and belongs to the technical field of communication. The signal processing method of the application comprises the following steps: a first device processes a communication signal and a linear frequency modulation signal according to target operation to obtain a communication and sensing integrated signal, wherein the communication and sensing integrated signal is a signal capable of being used for communication and sensing.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of communication, and particularly relates to a signal processing method and device and communication equipment. BACKGROUND

[0002] In the related art, when communication and perception integration design is performed, time division multiplexing, frequency division multiplexing, and space division multiplexing are used, but the resource utilization rate of these methods is not high, and for a communication-oriented communication and perception integration system, commonly used common waveforms may affect the communication performance. SUMMARY

[0003] Embodiments of the present application provide a signal processing method, device and communication equipment, which can solve the problems of low resource utilization rate and large impact on communication performance in the existing communication and perception integration design scheme.

[0004] In a first aspect, a signal processing method is provided, comprising:

[0005] A first device processes a communication signal and a linear frequency modulation signal according to a target operation to obtain a communication and perception integration signal, the communication and perception integration signal being a signal that can be used for communication and perception;

[0006] The target operation includes at least one of the following:

[0007] a frequency domain multiplication operation;

[0008] a time domain cyclic convolution operation;

[0009] a time domain multiplication operation;

[0010] a frequency domain cyclic convolution operation;

[0011] a time domain conjugate multiplication operation;

[0012] a frequency domain conjugate multiplication operation;

[0013] a time domain division operation;

[0014] a frequency domain division operation;

[0015] a time domain superposition operation;

[0016] a time domain subtraction operation;

[0017] a frequency domain superposition operation;

[0018] a frequency domain subtraction operation.

[0019] In a second aspect, a signal processing device is provided, comprising:

[0020] The first processing module is configured to process the communication signal and the chirp signal according to a target operation to obtain a communication-sensing integrated signal, wherein the communication-sensing integrated signal is a signal capable of being used for communication and sensing.

[0021] The target operation includes at least one of the following:

[0022] a frequency domain multiplication operation;

[0023] a time domain cyclic convolution operation;

[0024] a time domain multiplication operation;

[0025] a frequency domain cyclic convolution operation;

[0026] a time domain conjugate multiplication operation;

[0027] a frequency domain conjugate multiplication operation;

[0028] a time domain division operation;

[0029] a frequency domain division operation;

[0030] a time domain superposition operation;

[0031] a time domain subtraction operation;

[0032] a frequency domain superposition operation;

[0033] a frequency domain subtraction operation.

[0034] In a third aspect, a communication device is provided, which includes a processor and a memory, the memory storing a program or instructions executable on the processor, and the program or instructions, when executed by the processor, implement the steps of the method according to the first aspect.

[0035] In a fourth aspect, a communication device is provided, which includes a processor and a communication interface, and the processor is configured to process a communication signal and a chirp signal according to a target operation to obtain a communication-sensing integrated signal, wherein the communication-sensing integrated signal is a signal capable of being used for communication and sensing.

[0036] The target operation includes at least one of the following:

[0037] a frequency domain multiplication operation;

[0038] a time domain cyclic convolution operation;

[0039] a time domain multiplication operation;

[0040] a frequency domain cyclic convolution operation;

[0041] a time domain conjugate multiplication operation;

[0042] a frequency domain conjugate multiplication operation;

[0043] time domain division operation;

[0044] frequency domain division operation;

[0045] time domain superposition operation;

[0046] time domain subtraction operation;

[0047] frequency domain superposition operation;

[0048] frequency domain subtraction operation.

[0049] In a fifth aspect, a readable storage medium is provided, and the readable storage medium stores a program or instructions, and the program or instructions are executed by a processor to implement the steps of the method in the first aspect.

[0050] In a sixth aspect, a chip is provided, and the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is configured to run a program or instructions to implement the method in the first aspect.

[0051] In a seventh aspect, a computer program / program product is provided, and the computer program / program product is stored in a storage medium, and the computer program / program product is executed by at least one processor to implement the steps of the method in the first aspect.

[0052] In the embodiments of the present application, the linear frequency modulation signal is a signal that can be used for sensing. Here, the communication signal and the linear frequency modulation signal are processed according to target operation to obtain a sensing-communication integrated signal, and the sensing-communication integrated signal can be used for both communication transmission and sensing. Compared with the processing mode of time division or frequency division of the communication signal and the linear frequency modulation signal, the communication signal and the linear frequency modulation signal are fused through time domain cyclic convolution operation or frequency domain multiplication operation, and the same time-frequency resource is occupied, the resource utilization rate is improved, and the sensing-communication integrated signal obtained by the time domain cyclic convolution operation or the frequency domain multiplication operation of the linear frequency modulation signal and the communication signal enables the receiving end to eliminate the linear frequency modulation signal through simple frequency domain division, or the receiving end can directly perform channel estimation based on the sensing-communication integrated signal, and the influence of the sensing-communication integrated signal on the communication performance is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0053] Figure 1 a structural diagram of a communication system to which the embodiments of the present application can be applied;

[0054] Figure 2 a flowchart of a signal processing method according to the embodiments of the present application;

[0055] Figure 3 a module diagram of a signal processing device according to the embodiments of the present application;

[0056] Figure 4 a structural block diagram of a communication device according to an embodiment of the present application is shown;

[0057] Figure 5 a structural block diagram of a terminal according to an embodiment of the present application is shown;

[0058] Figure 6 a structural block diagram of a network side device according to an embodiment of the present application is shown;

[0059] Figure 7 a structural block diagram of a network side device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0060] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0061] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" are generally of a kind, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the front and rear associated objects are in an "or" relationship.

[0062] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to applications other than NR system applications, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0063] Figure 1A block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 can be a terminal side device such as a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a palm computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (a home device with a wireless communication function such as a refrigerator, a television, a washing machine, or furniture), a game console, a personal computer (PC), a kiosk, or a self-service machine. The wearable device includes a smart watch, a smart bracelet, a smart earphone, smart glasses, smart jewelry (a smart bracelet, a smart necklace, a smart ring, a smart necklace, a smart anklet, a smart necklace, etc.), a smart wristband, and smart clothing. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network side device 12 can include an access network device or a core network device. The access network device 12 can also be referred to as a radio access network device, a radio access network (RAN), a radio access network function, or a radio access network unit. The access network device 12 can include a base station, a WLAN access point, or a WiFi node. The base station can be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home node B, a home evolved node B, a transmitting receiving point (TRP), or some other appropriate terminology in the art, as long as the same technical effects are achieved. The base station is not limited to a specific technical term, and it should be noted that only a base station in an NR system is taken as an example for description in the embodiments of the present application, and the specific type of the base station is not limited.The core network device can include, but is not limited to, at least one of the following: a core network node, a core network function, a mobility management entity (MME), an access and mobility management function (AMF), a session management function (SMF), a user plane function (UPF), a policy control function (PCF), a policy and charging rules function (PCRF), an edge application server discovery function (EASDF), a unified data management (UDM), a unified data repository (UDR), a home subscriber server (HSS), a centralized network configuration (CNC), a network repository function (NRF), a network exposure function (NEF), a local NEF (L-NEF), a binding support function (BSF), an application function (AF), and the like. It should be noted that only the core network device in the NR system is taken as an example for introduction in the embodiments of the present application, and the specific type of the core network device is not limited.

[0064] In order for those skilled in the art to better understand the embodiments of the present application, the following is described.

[0065] Communication and perception integration is to realize the integration design of communication and perception functions through spectrum sharing and hardware sharing in the same system. The system can perceive information such as direction, distance, and speed while transmitting information, and detect, track, and identify target objects or events. The communication system and the perception system complement each other to improve the overall performance and bring better service experience.

[0066] Future mobile communication systems, such as B5G systems or 6G systems, will have sensing capabilities in addition to communication capabilities. Sensing capabilities, i.e., one or more devices with sensing capabilities, can perceive the position, distance, speed, etc. of a target object through the transmission and reception of wireless signals, or detect, track, identify, image, etc. target objects, events, or environments, etc. In the future, with the deployment of small base stations with high-frequency large-bandwidth capabilities such as millimeter waves and terahertz in 6G networks, the resolution of sensing will be significantly improved compared to centimeter waves, thereby enabling 6G networks to provide more refined sensing services.

[0067] The integration of communication and radar belongs to a typical communication-sensing fusion application. In the past, radar systems and communication systems were strictly separated due to different research objects and focuses, and the two systems were often studied separately in most scenarios. In fact, radar and communication systems are also typical ways of information transmission, acquisition, processing, and exchange, and there are many similarities in working principles, system architectures, and frequency bands. The design of communication and radar integration has great feasibility, mainly reflected in the following aspects: first, both communication systems and sensing systems are based on electromagnetic wave theory and use electromagnetic wave transmission and reception to complete information acquisition and transmission; second, both communication systems and sensing systems have structures such as antennas, transmitters, receivers, signal processors, etc., and there is a great overlap in hardware resources; with the development of technology, there are more and more overlaps in working frequency bands; in addition, there are similarities in key technologies such as signal modulation and reception detection, waveform design, etc. The integration of communication and radar systems can bring many advantages, such as cost savings, size reduction, power consumption reduction, spectrum efficiency improvement, mutual interference reduction, etc., thereby improving the overall performance of the system.

[0068] Currently, there are many related researches on the integrated design of radar and communication systems. Typical joint designs include spectrum coexistence, i.e., two systems work independently, can allow information exchange to reduce interference between each other; receiver sharing, at this time two system transmitter sends its own signal waveform, two system waveforms need to have orthogonality, so as not to affect each other's reception detection; transmitter sharing, i.e., the transmitting end transmits the joint waveform of radar and communication; and transceiver sharing, i.e., both sides of the two systems share resources, and also need to use joint waveforms or waveforms with orthogonal relationship. The key of integrated waveform design is to minimize the interference between communication signals and sensing signals, to meet the needs of communication and sensing functions, and to improve the spectrum efficiency on the premise of ensuring system performance. Integrated waveforms can take the form of multiplexing, including time division multiplexing, frequency division multiplexing, and space division multiplexing. They can also take the form of commonality, i.e., designing new fusion waveforms. When designing, it needs to consider whether the integrated waveform should be primarily for communication function or radar detection function, and find the balance point in performance. Common fusion waveforms are mainly divided into single-carrier waveforms and multi-carrier waveforms. Single-carrier waveform design is usually combined with spread spectrum technology, such as direct sequence spread spectrum (DSSS) and chirp spread spectrum (CSS). Chirp signal, also known as linear frequency modulation (LFM), is a signal whose frequency changes linearly with time. It is commonly used in radar systems to help improve the balance between resolution and maximum search range, and is a common radar modulation signal. Chirp signal is also a spread spectrum signal with strong anti-interference characteristics and robustness. Multi-carrier integrated waveforms are typically orthogonal frequency division multiplexing (OFDM) waveforms. They have certain advantages over single-carrier spread spectrum integrated waveforms, such as higher spectrum efficiency, flexible bandwidth resource allocation, and no distance-Doppler coupling effect. When designing, the frame structure needs to be designed reasonably according to the radar detection requirements, such as subcarrier spacing and cyclic prefix, which will affect the sensing function.

[0069] When sensing, it can be single-station mode-based sensing, i.e., transceiver co-site, the transmitting end transmits a signal for sensing, and then receives the return signal and analyzes it to extract sensing parameters. For example, a base station acts as the transmitting end and receiving end of the signal for sensing, and a terminal or other object acts as the sensing target. It can also be based on double / multi-station mode sensing, i.e., transceiver non-co-site, the transmitting end transmits a signal for sensing, and other receiving ends receive and analyze it to extract sensing parameters. For example, base station 1 acts as the signal transmitting end for sensing, and a terminal or base station 2 acts as the signal receiving end for sensing. Similarly, the transmitting end of single-station or multi-station mode sensing can also be a terminal.

[0070] The communication system needs to jointly send the modulation symbols carrying information and the pilot symbols used for channel estimation, focuses on decoding performance, and the channel estimation algorithm only needs to estimate the composite channel with limited unknown parameters, usually optimizes the throughput and transmission reliability, and the performance indicators generally are spectral efficiency, channel capacity, signal-to-noise ratio (SNR), signal-to-noise and interference ratio (SINR), bit error rate (BER), block error rate (BLER), and symbol error rate (SER). The sensing system does not need to consider the information carrying problem in the signal sending process, usually uses the optimized or unmodulated transmission signal, focuses on the changes of the sensing target to the transmission signal, that is, the response characteristics, usually optimizes the estimation accuracy of the parameters, and the performance measurement indicators can be the fuzzy function, Cramer-Rao lower bound, root mean square error, mutual information, rate-distortion function, radar estimation rate, Welch lower bound, and some indicators associated with the sensing scene and demand.

[0071] The signal processing method provided by the embodiments of the present application will be described in detail in combination with the accompanying drawings and some embodiments and application scenarios.

[0072] As shown in Figure 2 The embodiments of the present application provide a signal processing method, comprising:

[0073] Step 201: The first device processes the communication signal and the linear frequency modulation signal according to target operation to obtain an integrated communication and sensing signal, and the integrated communication and sensing signal is a signal that can be used for communication and sensing.

[0074] The target operation includes at least one of the following:

[0075] Frequency domain multiplication operation;

[0076] Time domain cyclic convolution operation;

[0077] Time domain multiplication operation;

[0078] Frequency domain cyclic convolution operation;

[0079] Time domain conjugate multiplication operation;

[0080] Frequency domain conjugate multiplication operation;

[0081] Time domain division operation;

[0082] Frequency domain division operation;

[0083] time domain addition operation;

[0084] time domain subtraction operation;

[0085] frequency domain addition operation;

[0086] frequency domain subtraction operation. Optionally, the communication signal comprises at least one of:

[0087] reference signal;

[0088] synchronization signal;

[0089] preamble;

[0090] data signal.

[0091] Optionally, the waveform of the communication signal comprises at least one of:

[0092] Orthogonal Frequency Division Multiplexing, OFDM, waveform;

[0093] an OFDM-based improved waveform, e.g., Wideband Orthogonal Frequency Division Multiplexing (W-OFDM), Filter Bank Based Multicarrier (FBMC), Generalized Frequency Division Multiplexing (GFDM), Universal Filtered Multi-Carrier (UFMC), Filtered-OFDM (F-OFDM), etc.;

[0094] Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing, DFT-s-OFDM, waveform;

[0095] a DFT-s-OFDM-based improved waveform, e.g., Zero Tailing DFT-s-OFDM (ZT DFT-s-OFDM) waveform, Unique word DFT-s-OFDM (UW DFT-s-OFDM) waveform, etc.;

[0096] Single Carrier Frequency Domain Equalization, SC-FDE, waveform;

[0097] Orthogonal Time Frequency Space (OTFS) waveform.

[0098] In the embodiments of the present application, the chirp signal is a signal that can be used for sensing. Here, the communication signal and the chirp signal are processed according to a time domain cyclic convolution operation or a frequency domain multiplication operation to obtain a communication-sensing integrated signal. The communication-sensing integrated signal can be used for both communication transmission and sensing. Compared with a processing mode in which the communication signal and the chirp signal are processed by time division or frequency division, the communication signal and the chirp signal are fused by the time domain cyclic convolution operation or the frequency domain multiplication operation, and occupy the same time-frequency resource, thereby improving the resource utilization rate. In addition, the communication-sensing integrated signal obtained by the time domain cyclic convolution operation or the frequency domain multiplication operation of the chirp signal and the communication signal enables the receiving end to eliminate the chirp signal by simple frequency domain division, or the receiving end can directly perform channel estimation based on the communication-sensing integrated signal, thereby effectively reducing the influence of the communication-sensing integrated signal on the communication performance. The communication signal and the chirp signal have the same bandwidth and frequency domain sampling format.

[0099] For example, the communication signal has n subcarriers in the frequency domain, and the center frequencies of the subcarriers are f1,…,fn, respectively. n Corresponding to the frequency domain resources RE1-REn, the frequency domain sampling positions of the chirp signal are f1,…,fn, respectively. n Corresponding to the frequency domain resources RE1-REn, the frequency domain sampling positions of the chirp signal are f1,…,fn, respectively.

[0100] Optionally, the duration T o of the communication signal satisfies the following formula: C

[0101] T C = T o .

[0102] T C = T o + T CP , T CP represents the duration of the cyclic prefix CP of the communication signal.

[0103] Optionally, the start time of the communication signal is the same as the start time of the chirp signal.

[0104] The end time of the communication signal is the same as the end time of the chirp signal.

[0105] Optionally, the first device processes the communication signal and the chirp signal according to a target operation to obtain a communication-sensing integrated signal, comprising:​

[0106] normalizing the communication signal and the chirp signal to obtain a processed communication signal and a processed chirp signal;

[0107] processing the processed communication signal and the processed chirp signal according to a target operation to obtain a communication-sensing integrated signal.

[0108] Optionally, after the first device processes the communication signal and the chirp signal according to the target operation to obtain the communication-sensing integrated signal, the method further includes:

[0109] normalizing the communication-sensing integrated signal to obtain a processed communication-sensing integrated signal.

[0110] That is, in the embodiment of the application, the communication signal and the chirp signal can be normalized first, and then processed according to the target operation to obtain the communication-sensing integrated signal, or the communication signal and the chirp signal can be processed according to the target operation first, and then normalized to obtain the final communication-sensing integrated signal.

[0111] The first device processes the communication signal and the chirp signal according to the target operation to obtain the communication-sensing integrated signal, including:

[0112] The first device adjusts the power of the communication signal and the chirp signal according to the power adjustment information to obtain a power-adjusted communication signal and a power-adjusted chirp signal;

[0113] processing the power-adjusted communication signal and the power-adjusted chirp signal according to the target operation to obtain the communication-sensing integrated signal.

[0114] In the implementation mode in which the communication signal and the chirp signal are normalized first and then processed according to the target operation to obtain the communication-sensing integrated signal, the normalized communication signal and the normalized chirp signal can be power-adjusted, and then processed according to the target operation; in the implementation mode in which the communication signal and the chirp signal are processed according to the target operation first and then normalized to obtain the final communication-sensing integrated signal, the communication signal and the chirp signal are power-adjusted first, and then processed according to the target operation, and finally normalized.

[0115] In the embodiment of the application, the normalization processing includes frequency domain normalization processing.

[0116] Optionally, the processed target signal satisfies the following formula:

[0117] S'(k) = S(k) ÷ Norm_factor;

[0118] wherein S'(k) represents the processed target signal, S(k) represents the target signal before processing, Norm_factor represents a normalization factor, k represents the serial number of a sampling point, k = 1, …, n; n represents the total number of sampling points, and the target signal is the communication signal, the linear frequency modulation signal or the integrated signal of communication and sensing.

[0119] Optionally, the normalization factor satisfies at least one of the following formulas:

[0120]

[0121]

[0122] Optionally, the first device processes the communication signal and the linear frequency modulation signal according to a target operation to obtain an integrated signal of communication and sensing, comprising:

[0123] processing the communication signal and the first linear frequency modulation signal according to a target operation to obtain a first integrated signal of communication and sensing;

[0124] processing the communication signal and the second linear frequency modulation signal according to a target operation to obtain a second integrated signal of communication and sensing;

[0125] wherein K1 = -K2, K1 represents the slope of the first linear frequency modulation signal, and K2 represents the slope of the second linear frequency modulation signal.

[0126] In the embodiments of the present application, the first integrated signal of communication and sensing and the second integrated signal of communication and sensing have the same time-frequency resource, and the first linear frequency modulation signal and the second linear frequency modulation signal have the same parameters (such as the starting frequency, the bandwidth, the duration, the sampling rate, etc.) except for the slope.

[0127] Here, the integrated signal of communication and sensing processes the communication signal and the linear frequency modulation signal according to a target operation to obtain two integrated signals of communication and sensing (which can also be described as code division integrated signals of communication and sensing), i.e. two integrated signals of communication and sensing which are approximately orthogonal, and can be used for multiple users or multiple ports.

[0128] Optionally, the method of the embodiments of the present application further comprises:

[0129] sending configuration information of the integrated signal of communication and sensing to the second device, the configuration information comprising at least one of:

[0130] identification information of the integrated signal of communication and sensing, the identification information being used to indicate that the signal is the integrated signal of communication and sensing, or being used to indicate the communication signal and / or the linear frequency modulation signal used to generate the integrated signal of communication and sensing.

[0131] a generation manner of the inter-sense integrated signal, i.e., target operation information, for example, time domain cyclic convolution or frequency domain multiplication;

[0132] time-frequency resource information of the inter-sense integrated signal, the time-frequency resource information at least including at least one of a starting frequency point (or a starting RB or a subcarrier index), a bandwidth (or a number of occupied RBs or subcarriers), an occupied frequency range (or an occupied RB or subcarrier index), and a frequency domain sampling interval;

[0133] time-frequency resource information of at least one of a communication signal and a linear frequency modulation signal corresponding to the inter-sense integrated signal, the time-frequency resource information at least including at least one of a starting time domain position (or a starting symbol index or a time slot index), a time domain duration (or a number of occupied symbols or a number of time slots), and an occupied time domain position (or an occupied symbol index or a time slot index or a half frame number or a radio frame number or another time unit label);

[0134] slope information of a linear frequency modulation signal corresponding to the inter-sense integrated signal, the slope information being a specific value of a frequency modulation slope, or being positive and / or negative information of the frequency modulation slope and / or a size (absolute value) of the frequency modulation slope;

[0135] power adjustment information of at least one of the communication signal and the linear frequency modulation signal corresponding to the inter-sense integrated signal.

[0136] Optionally, the power adjustment information includes at least one of:

[0137] power ratio information of the communication signal and the linear frequency modulation signal;

[0138] amplitude ratio information of the communication signal and the linear frequency modulation signal;

[0139] a power factor or an amplitude factor of the communication signal;

[0140] a power factor or an amplitude factor (i.e., a weight factor of weighted combination) of the linear frequency modulation signal.

[0141] In a specific embodiment of the present application, a Chirp signal and an OFDM symbol are multiplied in the frequency domain to generate an inter-sense integrated signal, the Chirp signal has the same bandwidth as the OFDM symbol, the OFDM symbol can be an OFDM pilot symbol (using a PN sequence), and the Chirp signal has the same duration as the OFDM pilot symbol (without CP). Specifically, the Chirp signal satisfies the following formula:

[0142]

[0143] where A0 is an amplitude, f0 is a starting frequency, and k = B / TC For the frequency modulation slope, B is the bandwidth, which is the same as the OFDM pilot symbol bandwidth, T C is the Chirp duration, which is the same as the OFDM pilot symbol duration, i.e., T C = T O .

[0144] For the OFDM pilot symbol, the subcarrier spacing is Δf, the IFFT length is N, and the sampling rate is f s = NΔf, the Chirp signal sampling rate is the same as the OFDM pilot symbol sampling rate, which is f s , the sampling interval T s = 1 / f s , and after sampling, the number of samples of the Chirp signal in T time (corresponding to one symbol) is N, which is represented as s2(0), …, s2(N-1).

[0145] The sampled Chirp signal is subjected to N-point FFT transformation to obtain the corresponding frequency domain Chirp signal, which is represented as S2(0), …, S2(N-1), and then the frequency domain Chirp signal is sampled according to the frequency domain sampling format of the OFDM pilot symbol, which is the same as the scheme of the embodiment of the present application, i.e., the OFDM pilot symbol has n (n≤N) subcarriers in the frequency domain, which represent different frequency domain sampling points, and the serial numbers of the sampling points are represented as f1, …, f n , the corresponding OFDM signal is represented as S1(f1), …, S1(f n ), and the serial numbers of the Chirp signal frequency domain sampling points are f1, …, f n , which correspond to the frequency domain resources RE1-REn, where RE1-REn can be continuous or discontinuous, and the corresponding Chirp signal is represented as S2(f1), …, S2(f n ), i.e., the frequency domain sampling points f1, …, f n of the OFDM signal and the Chirp signal correspond to the same frequency domain position / frequency point, and the all-in-one signal generation can be represented as:

[0146] The frequency domain normalization processing is performed on S2(f1), …, S2(f n ) to obtain S2'(f1), …, S2'(f n ), and the frequency domain multiplication is performed on the OFDM pilot symbol to obtain the all-in-one signal: S'0(f k ) = S1(f k )·S2'(f k ), k = 1, …, n.

[0147] Alternatively, the frequency domain multiplication is performed to obtain S0(f k) = S1(f k ) · S2(f k ), k = 1, …, n, and then performing frequency domain normalization processing on S0(f k ) to obtain the integrated sensing signal S'0(f k ), k = 1, …, n.

[0148] In another specific embodiment of the present application, the Chirp signal and the OFDM symbol generate the integrated sensing signal through time domain cyclic convolution, the Chirp signal has the same bandwidth as the OFDM symbol, the Chirp signal has the same duration as the OFDM symbol (including CP), and the OFDM symbol can be an OFDM pilot symbol (using a PN sequence). Specifically, the Chirp signal satisfies the following formula:

[0149]

[0150] where A0 is the amplitude, f0 is the starting frequency, k = B / T C is the frequency modulation slope, where B is the bandwidth, which is the same as the bandwidth of the OFDM pilot symbol, and T C is the Chirp duration, which is the same as the duration of the OFDM pilot symbol (including CP), i.e. T C = T O + T CP .

[0151] For the OFDM pilot symbol, the subcarrier spacing is Δf, the IFFT length is N, and the sampling rate is f s = NΔf, and after IFFT transformation and addition of CP, it is represented as s1(0), …, s1(N+N CP -1), where N CP = T CP · f s , and N CP represents the CP length;

[0152] The sampling rate of the Chirp signal is the same as that of the OFDM pilot symbol, which is f s , and the sampling interval T s = 1 / f s , and after sampling, the Chirp signal has a number of samples N+N C in the time T O = T CP + T CP , where N CP = T CP · f s , and the sampled time domain Chirp signal can be represented as: s2(0), …, s2(N+N CP -1);

[0153] The sampled time domain Chirp signal is normalized to obtain s2'(0),…,s2'(N+N CP -1), and the processed Chirp signal is circularly convolved with the OFDM symbol after IFFT transformation and adding CP to obtain the synaesthesia integrated signal:

[0154] In this embodiment, t k Indicates the sequence number of the sampling point.

[0155] In an embodiment of the present application, the linear frequency modulation signal is a signal that can be used for perception. Here, the communication signal and the linear frequency modulation signal are processed according to the target operation to obtain a synaesthesia integrated signal. The synaesthesia integrated signal can be used for both communication transmission and perception. Compared with the time division or frequency division processing method of the communication signal and the linear frequency modulation signal, the communication signal and the linear frequency modulation signal are fused through a time domain circular convolution operation or a frequency domain multiplication operation, occupying the same time and frequency resources, thereby improving resource utilization. In addition, the synaesthesia integrated signal obtained by performing a time domain circular convolution operation or a frequency domain multiplication operation on the linear frequency modulation signal and the communication signal enables the receiving end to eliminate the linear frequency modulation signal through simple frequency domain division, or the receiving end can directly perform channel estimation based on the synaesthesia integrated signal, thereby effectively reducing the impact of the synaesthesia integrated signal on communication performance.

[0156] The signal processing method provided in the embodiment of the present application can be executed by a signal processing device. In the embodiment of the present application, the signal processing device provided in the embodiment of the present application is described by taking the signal processing device executing the signal processing method as an example.

[0157] like Figure 3 As shown, the embodiment of the present application further provides a signal processing device 300, including:

[0158] A first processing module 301 is configured to process the communication signal and the linear frequency modulation signal according to a target operation to obtain a synaesthesia integrated signal, wherein the synaesthesia integrated signal is a signal that can be used for communication and perception;

[0159] The target operation includes at least one of the following:

[0160] Frequency domain multiplication operation;

[0161] Time domain circular convolution operation;

[0162] Time domain multiplication operation;

[0163] Frequency domain circular convolution operation;

[0164] Time domain conjugate multiplication operation;

[0165] A frequency domain conjugate multiplication operation;

[0166] A time domain division operation;

[0167] A frequency domain division operation;

[0168] A time domain superposition operation;

[0169] A time domain subtraction operation;

[0170] A frequency domain superposition operation;

[0171] A frequency domain subtraction operation.

[0172] Optionally, the apparatus according to an embodiment of the present application further comprises a determination module configured to determine a target operation.

[0173] Optionally, the first processing module comprises:

[0174] a first processing sub-module configured to perform normalization processing on the communication signal and the linear frequency modulation signal to obtain a processed communication signal and a processed linear frequency modulation signal;

[0175] a second processing sub-module configured to perform processing on the processed communication signal and the processed linear frequency modulation signal according to the target operation to obtain a communication-sensing integrated signal.

[0176] Optionally, the apparatus according to an embodiment of the present application further comprises:

[0177] a second processing module configured to perform normalization processing on the communication-sensing integrated signal to obtain a processed communication-sensing integrated signal after the first processing module performs processing on the communication signal and the linear frequency modulation signal according to the target operation to obtain the communication-sensing integrated signal.

[0178] Optionally, the processed target signal satisfies the following formula:

[0179] S'(k) = S(k) ÷ Norm_factor;

[0180] wherein S'(k) represents the processed target signal, S(k) represents a target signal before processing, Norm_factor represents a normalization factor, k = 1, …, n; n represents a total number of sampling points, and the target signal is the communication signal, the linear frequency modulation signal or the communication-sensing integrated signal.

[0181] Optionally, the normalization factor satisfies at least one of the following formulas:

[0182]

[0183]

[0184] Optionally, the first processing module comprises:

[0185] a third processing submodule, configured to process the communication signal and the first linear frequency modulation signal according to a target operation to obtain a first communication-sensing integrated signal;

[0186] a fourth processing submodule, configured to process the communication signal and the second linear frequency modulation signal according to a target operation to obtain a second communication-sensing integrated signal;

[0187] wherein K1=-K2, K1 represents a slope of the first linear frequency modulation signal, and K2 represents a slope of the second linear frequency modulation signal.

[0188] Optionally, the first processing module comprises:

[0189] a power adjustment submodule, configured to perform power adjustment processing on the communication signal and the linear frequency modulation signal respectively according to power adjustment information to obtain the communication signal and the linear frequency modulation signal after power adjustment processing;

[0190] a fifth processing submodule, configured to process the communication signal and the linear frequency modulation signal after power adjustment processing according to a target operation to obtain a communication-sensing integrated signal.

[0191] Optionally, the apparatus of the embodiment of the present application further comprises:

[0192] a transmission module, configured to send configuration information of the communication-sensing integrated signal to a second device, the configuration information comprising at least one of the following:

[0193] identification information of the communication-sensing integrated signal;

[0194] generation mode information of the communication-sensing integrated signal;

[0195] time-frequency resource information of the communication-sensing integrated signal;

[0196] time-frequency resource information of at least one of the communication signal and the linear frequency modulation signal corresponding to the communication-sensing integrated signal;

[0197] slope information of the linear frequency modulation signal corresponding to the communication-sensing integrated signal;

[0198] power adjustment information of at least one of the communication signal and the linear frequency modulation signal corresponding to the communication-sensing integrated signal.

[0199] Optionally, the power adjustment information comprises at least one of the following:

[0200] power ratio information of the communication signal and the linear frequency modulation signal;

[0201] amplitude ratio information of the communication signal and the linear frequency modulation signal;

[0202] a power factor or amplitude factor of the communication signal;

[0203] a power factor or amplitude factor of the chirp signal.

[0204] Optionally, the communication signal comprises at least one of:

[0205] a reference signal;

[0206] a synchronization signal;

[0207] a preamble;

[0208] a data signal.

[0209] Optionally, a waveform of the communication signal comprises at least one of:

[0210] an orthogonal frequency division multiplexing, OFDM, waveform;

[0211] an OFDM-based improved waveform;

[0212] a discrete Fourier transform-spread-orthogonal frequency division multiplexing, DFT-s-OFDM, waveform;

[0213] a DFT-s-OFDM-based improved waveform;

[0214] a single carrier frequency domain equalization, SC-FDE, waveform;

[0215] an orthogonal time frequency space, OTFS, waveform.

[0216] Optionally, the communication signal has a same bandwidth and frequency domain sampling format as the chirp signal.

[0217] Optionally, a duration T o of the communication signal satisfies one of the following formulas: C

[0218] T C = T o ;

[0219] T C = T o + T CP , T CP denotes a duration of a cyclic prefix, CP, of the communication signal.

[0220] Optionally, a starting time of the communication signal is the same as a starting time of the chirp signal;

[0221] an ending time of the communication signal is the same as an ending time of the chirp signal. ​

[0222] In the embodiments of the present application, the linear frequency modulation signal is a signal that can be used for sensing. Here, the communication signal and the linear frequency modulation signal are processed according to target operation to obtain a communication-sensing integrated signal. The communication-sensing integrated signal can be used for both communication transmission and sensing. Compared with the processing mode of time division or frequency division of the communication signal and the linear frequency modulation signal, the communication signal and the linear frequency modulation signal are fused through time domain cyclic convolution operation or frequency domain multiplication operation, and occupy the same time-frequency resource, thereby improving the resource utilization rate. In addition, the communication-sensing integrated signal obtained by the time domain cyclic convolution operation or the frequency domain multiplication operation of the linear frequency modulation signal and the communication signal enables the receiving end to eliminate the linear frequency modulation signal through simple frequency domain division, or the receiving end can directly perform channel estimation based on the communication-sensing integrated signal, thereby effectively reducing the influence of the communication-sensing integrated signal on the communication performance.

[0223] The signal processing apparatus in the embodiments of the present application can be an electronic device, for example, an electronic device with an operating system, or a component in the electronic device, for example, an integrated circuit or a chip. The electronic device can be a terminal or other devices other than the terminal. Exemplarily, the terminal can include, but is not limited to, the types of the terminal 11 listed above, and the other devices can be a server, a network attached storage (NAS), etc., which are not limited in the embodiments of the present application.

[0224] The signal processing apparatus provided in the embodiments of the present application can implement the various processes of the method embodiments and achieve the same technical effects. To avoid repetition, the various processes will not be described herein again. Figure 2 The method embodiments achieve the same technical effects. To avoid repetition, the various processes will not be described herein again.

[0225] Optionally, as shown in Figure 4 the embodiments of the present application also provide a communication device 400, which includes a processor 401 and a memory 402. The memory 402 stores programs or instructions executable on the processor 401. When the programs or instructions are executed by the processor 401, the various steps of the above signal processing method embodiments are implemented, and the same technical effects are achieved. To avoid repetition, the various processes will not be described herein again.

[0226] The embodiments of the present application also provide a communication device, which includes a processor and a communication interface. The processor is configured to process a communication signal and a linear frequency modulation signal according to target operation to obtain a communication-sensing integrated signal. The communication-sensing integrated signal is a signal that can be used for communication and sensing. The power adjustment information includes at least one of the following:

[0227] a power ratio information of the communication signal and the linear frequency modulation signal;

[0228] an amplitude ratio information of the communication signal and the linear frequency modulation signal;

[0229] a power factor or an amplitude factor of the communication signal;

[0230] a power factor or an amplitude factor of the linear frequency modulation signal.

[0231] This embodiment corresponds to the above-mentioned first device-side method embodiment, and each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this communication device embodiment and can achieve the same technical effects. The first device can be a terminal, specifically, Figure 5 A hardware structure diagram of a terminal for implementing an embodiment of the present application.

[0232] The terminal 500 includes, but is not limited to, at least part of components such as a radio frequency unit 501, a network module 502, an audio output unit 503, an input unit 504, a sensor 505, a display unit 506, a user input unit 507, an interface unit 508, a memory 509, and a processor 510.

[0233] Those skilled in the art can understand that the terminal 500 can further include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 510 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. Figure 5 The terminal structure shown in the figure does not constitute a limitation on the terminal, and the terminal can include more or fewer components than those shown in the figure, or combine certain components, or different component arrangements, which are not described here.

[0234] It should be understood that in the embodiments of the present application, the input unit 504 can include a graphics processing unit (GPU) 5041 and a microphone 5042. The graphics processor 5041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 506 can include a display panel 5061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 507 includes at least one of a touch panel 5071 and other input devices 5072. The touch panel 5071 is also called a touch screen. The touch panel 5071 can include a touch detection device and a touch controller. The other input devices 5072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), trackballs, mice, joysticks, etc., which are not described here.

[0235] In the embodiments of the present application, the radio frequency unit 501 can transmit the downlink data received from the network side device to the processor 510 for processing; in addition, the radio frequency unit 501 can send uplink data to the network side device. Generally, the radio frequency unit 501 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0236] The memory 509 can be used to store software programs or instructions and various data. The memory 509 can mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area can store an operating system, at least one application program or instruction required by a function (such as a sound playing function, an image playing function, etc.), etc. In addition, the memory 509 can include a volatile memory or a non-volatile memory, or the memory 509 can include both volatile and non-volatile memories. The non-volatile memory can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a Random Access Memory (RAM), a Static RAM (SRAM), a Dynamic RAM (DRAM), a Synchronous DRAM (SDRAM), a Double Data Rate SDRAM (DDR SDRAM), an Enhanced SDRAM (ESDRAM), a Synch link DRAM (SLDRAM), and a Direct Rambus RAM (DRRAM). The memory 509 in the embodiments of the present application includes but is not limited to these and any other suitable types of memories.

[0237] The processor 510 can include one or more processing units; optionally, the processor 510 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and an application program, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 510.

[0238] The processor 510 is configured to perform target operation on the communication signal and the linear frequency modulation signal to obtain a sensing-communication integrated signal, which is a signal capable of being used for sensing and communication.

[0239] The target operation includes at least one of the following:

[0240] a frequency domain multiplication operation;

[0241] a time domain cyclic convolution operation;

[0242] a time domain multiplication operation;

[0243] a frequency domain cyclic convolution operation;

[0244] a time domain conjugate multiplication operation;

[0245] a frequency domain conjugate multiplication operation;

[0246] a time domain division operation;

[0247] a frequency domain division operation;

[0248] a time domain superposition operation;

[0249] a time domain subtraction operation;

[0250] a frequency domain superposition operation;

[0251] a frequency domain subtraction operation.

[0252] In the embodiment, the linear frequency modulation signal is a signal capable of being used for sensing. The communication signal and the linear frequency modulation signal are processed according to the target operation to obtain the sensing-communication integrated signal, which can be used for both communication transmission and sensing. Compared with the processing mode of time division or frequency division of the communication signal and the linear frequency modulation signal, the communication signal and the linear frequency modulation signal are fused by the time domain cyclic convolution operation or the frequency domain multiplication operation, and the same time-frequency resource is occupied, thereby improving the resource utilization rate. The sensing-communication integrated signal obtained by the time domain cyclic convolution operation or the frequency domain multiplication operation of the linear frequency modulation signal and the communication signal enables the receiving end to eliminate the linear frequency modulation signal by a simple frequency domain division, or the receiving end can directly perform channel estimation based on the sensing-communication integrated signal, thereby effectively reducing the influence of the sensing-communication integrated signal on the communication performance.

[0253] Optionally, the processor 510 is configured to perform normalization processing on the communication signal and the linear frequency modulation signal to obtain processed communication signal and linear frequency modulation signal.

[0254] The processed communication signal and the linear frequency modulation signal are processed according to the target operation to obtain the sensing-communication integrated signal.

[0255] Optionally, the processor 510 is configured to perform normalization processing on the communication-sensing integrated signal to obtain a processed communication-sensing integrated signal.

[0256] Optionally, the processed target signal satisfies the following formula:

[0257] S'(k) = S(k) ÷ Norm_factor;

[0258] wherein S'(k) represents the processed target signal, S(k) represents the target signal before processing, Norm_factor represents a normalization factor, k represents the serial number of a sampling point, k = 1, …, n; n represents the total number of sampling points, and the target signal is the communication signal, the linear frequency modulation signal, or the communication-sensing integrated signal.

[0259] Optionally, the normalization factor satisfies at least one of the following formulas:

[0260]

[0261]

[0262] Optionally, the processor 510 is configured to perform power adjustment processing on the communication signal and the linear frequency modulation signal according to power adjustment information to obtain a power adjustment processed communication signal and a power adjustment processed linear frequency modulation signal; and perform processing on the power adjustment processed communication signal and the power adjustment processed linear frequency modulation signal according to target operation to obtain a communication-sensing integrated signal.

[0263] Optionally, the processor 510 is configured to perform processing on the communication signal and the first linear frequency modulation signal according to target operation to obtain a first communication-sensing integrated signal.

[0264] perform processing on the communication signal and the second linear frequency modulation signal according to target operation to obtain a second communication-sensing integrated signal.

[0265] wherein K1 = -K2, K1 represents the slope of the first linear frequency modulation signal, and K2 represents the slope of the second linear frequency modulation signal.

[0266] Optionally, the radio frequency unit 501 is configured to send configuration information of the communication-sensing integrated signal to the second device, and the configuration information includes at least one of the following:

[0267] identification information of the communication-sensing integrated signal;

[0268] generation mode information of the communication-sensing integrated signal;

[0269] time-frequency resource information of the communication-sensing integrated signal;

[0270] time-frequency resource information of at least one of the communication signal and the chirp signal corresponding to the sense-and-feel integrated signal;

[0271] slope information of the chirp signal corresponding to the sense-and-feel integrated signal;

[0272] power adjustment information of at least one of the communication signal and the chirp signal corresponding to the sense-and-feel integrated signal.

[0273] Optionally, the power adjustment information comprises at least one of:

[0274] power ratio information of the communication signal and the chirp signal;

[0275] amplitude ratio information of the communication signal and the chirp signal;

[0276] a power factor or an amplitude factor of the communication signal;

[0277] a power factor or an amplitude factor of the chirp signal.

[0278] Optionally, the communication signal comprises at least one of:

[0279] a reference signal;

[0280] a synchronization signal;

[0281] a preamble;

[0282] a data signal.

[0283] Optionally, a waveform of the communication signal comprises at least one of:

[0284] an orthogonal frequency division multiplexing, OFDM, waveform;

[0285] an OFDM-based improved waveform;

[0286] a discrete Fourier transform-spread-orthogonal frequency division multiplexing, DFT-s-OFDM, waveform;

[0287] a DFT-s-OFDM-based improved waveform;

[0288] a single carrier frequency domain equalization, SC-FDE, waveform;

[0289] an orthogonal time frequency space, OTFS, waveform.

[0290] Optionally, the communication signal and the chirp signal have a same bandwidth and frequency domain sampling format.

[0291] Optionally, a time duration T o of the communication signal is Csatisfies one of the following formulas:

[0292] T C = T o ;

[0293] T C = T o + T CP , T CP represents a duration of a cyclic prefix CP of the communication signal.

[0294] Optionally, a starting time of the communication signal is the same as a starting time of the linear frequency modulation signal.

[0295] An ending time of the communication signal is the same as an ending time of the linear frequency modulation signal.

[0296] In the embodiments of the present application, the linear frequency modulation signal is a signal that can be used for sensing. Here, the communication signal and the linear frequency modulation signal are processed according to target operation to obtain a communication-sensing integrated signal. The communication-sensing integrated signal can be used for both communication transmission and sensing. Compared with a processing mode of time division or frequency division of the communication signal and the linear frequency modulation signal, the communication signal and the linear frequency modulation signal are fused by time domain cyclic convolution operation or frequency domain multiplication operation, and occupy the same time-frequency resource, thereby improving resource utilization. In addition, the communication-sensing integrated signal obtained by the time domain cyclic convolution operation or the frequency domain multiplication operation of the linear frequency modulation signal and the communication signal enables the receiving end to eliminate the linear frequency modulation signal by simple frequency domain division, or the receiving end can directly perform channel estimation based on the communication-sensing integrated signal, thereby effectively reducing the influence of the communication-sensing integrated signal on communication performance.

[0297] The first device of the embodiments of the present application can also be a network side device. Specifically, the embodiments of the present application also provide a network side device. As shown in Figure 6 , the network side device 600 includes an antenna 61, a radio frequency device 62, a baseband device 63, a processor 64, and a memory 65. The antenna 61 is connected with the radio frequency device 62. In the uplink direction, the radio frequency device 62 receives information through the antenna 61, and sends the received information to the baseband device 63 for processing. In the downlink direction, the baseband device 63 processes the information to be sent, and sends it to the radio frequency device 62. The radio frequency device 62 processes the received information and sends it out through the antenna 61.

[0298] The method performed by the network side device in the above embodiments can be implemented in the baseband device 63, which includes a baseband processor.

[0299] The baseband device 63 may, for example, include at least one baseband board on which a plurality of chips are arranged, such as Figure 6As shown, one of the chips, for example, is a baseband processor, which is connected with the memory 65 through a bus interface to invoke a program in the memory 65 to perform the network device operation shown in the above method embodiment.

[0300] The network side device can further include a network interface 66, for example, a common public radio interface (CPRI).

[0301] Specifically, the network side device 600 of the embodiment of the application further includes instructions or programs stored in the memory 65 and executable on the processor 64, and the processor 64 invokes the instructions or programs in the memory 65 to perform the method executed by the modules shown in the above method embodiment and achieve the same technical effects, and thus the details are not described herein. Figure 3 The modules shown in the above method embodiment perform the method and achieve the same technical effects, and thus the details are not described herein.

[0302] Specifically, the embodiment of the application further provides a network side device. As shown in the above method embodiment, Figure 7 The network side device 700 includes a processor 701, a network interface 702 and a memory 703. The network interface 702 is, for example, a common public radio interface (CPRI).

[0303] Specifically, the network side device 700 of the embodiment of the application further includes instructions or programs stored in the memory 703 and executable on the processor 701, and the processor 701 invokes the instructions or programs in the memory 703 to perform the method executed by the modules shown in the above method embodiment and achieve the same technical effects, and thus the details are not described herein. Figure 3 The modules shown in the above method embodiment perform the method and achieve the same technical effects, and thus the details are not described herein.

[0304] The embodiment of the application further provides a readable storage medium, and the readable storage medium stores programs or instructions, which are executed by a processor to implement the processes of the above signal processing method embodiments and achieve the same technical effects, and thus the details are not described herein.

[0305] The processor is the processor in the terminal described in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable only memory (ROM), a random access memory (RAM), a magnetic disc or an optical disc, etc.

[0306] The embodiment of the application further provides a chip, which includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used to run programs or instructions to implement the processes of the above signal processing method embodiments and achieve the same technical effects, and thus the details are not described herein.

[0307] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system chip, a system chip, a chip system, or a system on chip, etc.

[0308] The embodiments of the present application further provide a computer program / program product stored in a storage medium, which is executed by at least one processor to implement various processes of the above-mentioned signal processing method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein.

[0309] It should be noted that in this document, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles, or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or include elements inherent to such processes, methods, articles, or devices. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method, article, or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted, or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0310] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned method embodiments can be realized by means of software and necessary general hardware platforms, of course, they can also be realized by hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a plurality of instructions for making a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) execute the methods described in various embodiments of the present application.

[0311] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-mentioned specific embodiments, which are only illustrative and not limiting. Those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the protection scope of the claims.

Claims

1. A signal processing method, characterized by, The method comprises the following steps: The first device processes the communication signal and the linear frequency modulation signal according to a target operation to obtain a sensing-communication integrated signal, wherein the sensing-communication integrated signal is a signal that can be used for communication and sensing; The target operation comprises at least one of the following operations: Frequency domain multiplication operation; Time domain cyclic convolution operation; Time domain multiplication operation; Frequency domain cyclic convolution operation; Time domain conjugate multiplication operation; Frequency domain conjugate multiplication operation; Time domain division operation; Frequency domain division operation; Time domain superposition operation; Time domain subtraction operation; Frequency domain superposition operation; Frequency domain subtraction operation; The first device processes the communication signal and the linear frequency modulation signal according to a target operation to obtain a sensing-communication integrated signal, comprising: The first device processes the communication signal and the first linear frequency modulation signal according to a target operation to obtain a first sensing-communication integrated signal; The first device processes the communication signal and the second linear frequency modulation signal according to a target operation to obtain a second sensing-communication integrated signal; K1=-K2, wherein K1 represents the slope of the first linear frequency modulation signal, and K2 represents the slope of the second linear frequency modulation signal.

2. The method of claim 1, wherein, The first device processes the communication signal and the linear frequency modulation signal according to a target operation to obtain a sensing-communication integrated signal, comprising: The first device processes the communication signal and the linear frequency modulation signal according to a target operation to obtain a sensing-communication integrated signal, comprising: The first device processes the communication signal and the linear frequency modulation signal according to a target operation to obtain a sensing-communication integrated signal, and further comprising:

3. The method of claim 1, wherein, The first device processes the communication signal and the linear frequency modulation signal according to a target operation to obtain a sensing-communication integrated signal, and further comprising: The processed target signal satisfies the following formula:

4. The method according to claim 2 or 3, characterized in that, S'(k) = S(k) ÷ Norm_factor; S'(k) represents the processed target signal, S(k) represents the target signal before processing, Norm_factor represents a normalization factor, k represents the serial number of a sampling point, k = 1, …, n, n represents the total number of sampling points, and the target signal is the communication signal, the linear frequency modulation signal or the sensing-communication integrated signal. The normalization factor satisfies at least one of the following formulas:

5. The method of claim 4, wherein, The first device processes the communication signal and the linear frequency modulation signal according to a target operation to obtain a sensing-communication integrated signal, comprising:

6. The method of claim 1, wherein, The first device adjusts the power of the communication signal and the linear frequency modulation signal according to power adjustment information to obtain power-adjusted communication signal and power-adjusted linear frequency modulation signal; The first device processes the power-adjusted communication signal and the power-adjusted linear frequency modulation signal according to a target operation to obtain a sensing-communication integrated signal. Further comprising:

7. The method of claim 1, wherein, The first device sends configuration information of the sensing-communication integrated signal to the second device, wherein the configuration information comprises at least one of the following: Identification information of the sensing-communication integrated signal; Generation mode information of the sensing-communication integrated signal; Time-frequency resource information of the sensing-communication integrated signal; Time-frequency resource information of at least one of the communication signal and the linear frequency modulation signal corresponding to the sensing-communication integrated signal; Slope information of the linear frequency modulation signal corresponding to the sensing-communication integrated signal; ​ The power adjustment information of at least one of the communication signal and the linear frequency modulation signal corresponding to the all-sensing integrated signal.

8. The method according to claim 6 or 7, characterized in that, The power adjustment information includes at least one of: The power ratio information of the communication signal and the linear frequency modulation signal; The amplitude ratio information of the communication signal and the linear frequency modulation signal; The power factor or amplitude factor of the communication signal; The power factor or amplitude factor of the linear frequency modulation signal.

9. The method of claim 1, wherein, The communication signal includes at least one of: A reference signal; A synchronization signal; A preamble; A data signal.

10. The method of claim 1, wherein, The waveform of the communication signal includes at least one of: An orthogonal frequency division multiplexing (OFDM) waveform; An improved OFDM-based waveform; A discrete Fourier transform-spread-orthogonal frequency division multiplexing (DFT-s-OFDM) waveform; An improved DFT-s-OFDM-based waveform; A single-carrier frequency domain equalization (SC-FDE) waveform; An orthogonal time frequency space (OTFS) waveform.

11. The method of claim 1, wherein, The communication signal and the linear frequency modulation signal have the same bandwidth and frequency domain sampling format.

12. The method of claim 1, wherein, a duration T of the communication signal o a duration T of the linear frequency modulated signal C satisfies one of the following equations: T C = T o ; T C = T o + T CP , T CP denotes a duration of a cyclic prefix CP of the communication signal.

13. The method of claim 1, wherein, The start time of the communication signal is the same as the start time of the linear frequency modulation signal; The end time of the communication signal is the same as the end time of the linear frequency modulation signal.

14. A signal processing device, characterized by Comprise: A first processing module for processing a communication signal and a linear frequency modulation signal according to a target operation to obtain an all-sensing integrated signal, the all-sensing integrated signal being a signal that can be used for communication and sensing; The target operation includes at least one of: A frequency domain multiplication operation; A time domain cyclic convolution operation; A time domain multiplication operation; A frequency domain cyclic convolution operation; A time domain conjugate multiplication operation; A frequency domain conjugate multiplication operation; A time domain division operation; A frequency domain division operation; A time domain superposition operation; A time domain subtraction operation; A frequency domain superposition operation; A frequency domain subtraction operation; The first processing module comprises: A third processing submodule for processing the communication signal and a first linear frequency modulation signal according to a target operation to obtain a first all-sensing integrated signal; A fourth processing submodule for processing the communication signal and a second linear frequency modulation signal according to a target operation to obtain a second all-sensing integrated signal; Wherein K1=-K2, K1 represents the slope of the first linear frequency modulation signal, and K2 represents the slope of the second linear frequency modulation signal.

15. The apparatus of claim 14, wherein, The first processing module comprises: A first processing submodule for normalizing the communication signal and the linear frequency modulation signal to obtain a processed communication signal and a linear frequency modulation signal; A second processing submodule for processing the processed communication signal and the linear frequency modulation signal according to a target operation to obtain an all-sensing integrated signal.

16. The apparatus of claim 14, wherein, Further comprising: A second processing module for normalizing the all-sensing integrated signal after the first processing module processes the communication signal and the linear frequency modulation signal according to a target operation to obtain an all-sensing integrated signal.

17. The apparatus of claim 15 or 16, wherein, The processed target signal satisfies the following formula: S'(k) = S(k) ÷ Norm_factor; S'(k)=Norm_factor*S(k), k=1,……,n, wherein S'(k) represents the processed target signal, S(k) represents the target signal before processing, Norm_factor represents a normalization factor, k=1,……,n; n represents the total number of sampling points, and the target signal is the communication signal, the linear frequency modulation signal, or the integrated sensing signal.

18. The apparatus of claim 17, wherein, The normalization factor satisfies at least one of the following formulas:

19. The apparatus of claim 14, wherein, The first processing module comprises: a power adjustment sub-module, configured to perform power adjustment processing on the communication signal and the linear frequency modulation signal respectively according to power adjustment information, to obtain the power adjustment processed communication signal and the power adjustment processed linear frequency modulation signal; a fifth processing sub-module, configured to process the power adjustment processed communication signal and the power adjustment processed linear frequency modulation signal according to target operation, to obtain the integrated sensing signal.

20. The apparatus of claim 14, wherein, Further comprising: a transmission module, configured to send configuration information of the integrated sensing signal to a second device, the configuration information comprising at least one of the following: identification information of the integrated sensing signal; generation mode information of the integrated sensing signal; time-frequency resource information of the integrated sensing signal; time-frequency resource information of at least one of the communication signal and the linear frequency modulation signal corresponding to the integrated sensing signal; slope information of the linear frequency modulation signal corresponding to the integrated sensing signal; power adjustment information of at least one of the communication signal and the linear frequency modulation signal corresponding to the integrated sensing signal.

21. The apparatus of claim 19 or 20, wherein, The power adjustment information comprises at least one of the following: power ratio information of the communication signal and the linear frequency modulation signal; amplitude ratio information of the communication signal and the linear frequency modulation signal; power factor or amplitude factor of the communication signal; power factor or amplitude factor of the linear frequency modulation signal.

22. The apparatus of claim 14, wherein, The communication signal comprises at least one of the following: a reference signal; a synchronization signal; a preamble; a data signal.

23. The apparatus of claim 14, wherein, The waveform of the communication signal comprises at least one of the following: an orthogonal frequency division multiplexing (OFDM) waveform; an improved waveform based on OFDM; a discrete Fourier transform-spread-orthogonal frequency division multiplexing (DFT-s-OFDM) waveform; an improved waveform based on DFT-s-OFDM; a single carrier frequency domain equalization (SC-FDE) waveform; an orthogonal time frequency space (OTFS) waveform.

24. The apparatus of claim 14, wherein, The communication signal and the linear frequency modulation signal have the same bandwidth and frequency domain sampling format.

25. The apparatus of claim 14, wherein, a duration T of the communication signal o a duration T of the linear frequency modulated signal C satisfies one of the following equations: T C = T o ; T C = T o + T CP , T CP denotes a duration of a cyclic prefix CP of the communication signal.

26. The apparatus of claim 14, wherein, The start time of the communication signal is the same as the start time of the linear frequency modulation signal; The end time of the communication signal is the same as the end time of the linear frequency modulation signal.

27. A communications device, characterized by A processor and a memory, the memory stores programs or instructions executable on the processor, and the programs or instructions are executed by the processor to implement the steps of the signal processing method according to any one of claims 1 to 13.

28. A readable storage medium, characterized by, The readable storage medium stores programs or instructions, and the programs or instructions are executed by the processor to implement the steps of the signal processing method according to any one of claims 1 to 13.

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