A wireless baseband processing method and device for realizing integrated communication and perception

Abstract

The present invention proposes a wireless baseband processing method and device for realizing communication and perception integration, including: designing on the basis of the wireless baseband processing flow of the base station, adding an ISAC beam management module in the transmitter, and adding a perception function module SF in the receiver; sending a wide synaesthesia transmission beam through the ISAC beam management module and extracting perception information from the reflected perception echo through the SF module; based on the perception information, narrowing the beam through the ISAC beam management module to aim at the target position to send a narrow synaesthesia transmission beam; designing a method for distinguishing the echo data of the uplink communication beam and the synaesthesia transmission beam received by the base station, so that the base station distinguishes the communication and perception data from the uplink communication beam and the echo data. The method of the present invention enables the base station to have the ability to send synaesthesia integrated waveforms, and can distinguish and extract the communication data and perception data of the terminal user and other perception targets, and at the same time realizes the perception process of perception cooperative communication and fine perception.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and in particular to a wireless baseband processing method and device for realizing integrated communication and perception. Background Art

[0002] Communication perception integration is one of the key technologies of the fifth generation mobile communication evolution system. The wireless communication network can obtain the physical parameters of the perceived target to assist in improving communication performance. For example, it can shape the user beam according to the perceived data, reduce the amount of beam training, and achieve high-gain communication. Another example is to help users manage mobility based on the perceived user physical parameter information, shorten the user cell selection, switching and other processes, and improve the performance of the communication system.

[0003] There are two types of sensing methods for existing base stations designed based on the idea of ​​integrated communication and perception. One is to turn the base station into a dual-carrier device by adding carriers, one of which is used for communication and the other for perception. This solution requires a large amount of spectrum resources, and the communication and perception processes are separated, just like completing the perception communication process through two devices, radar and base station. The other is to plan based on the frame structure, shut down the communication transmission in a specific time slot and transmit and receive the perception signal. In this solution, the communication and perception processes are also separated, and during the perception process, the base station no longer transmits data, which has a great impact on the communication throughput and terminal users. In addition, the perception process proposed in the prior art first accesses the rough direction of the target through the reference signal access beam, and then perceives the precise perception information of the target through the perception signal. However, this perception process can only perceive the users who access the communication, and cannot perceive other perception targets that do not have communication capabilities. In addition, due to the influence of multipath, obstruction, etc., the beam accessed by the user is sometimes not from the direct direction of the base station.

[0004] In view of the above problems existing in the prior art, it is necessary to improve the design of the traditional base station so that the base station has the ability to send integrated waveforms, and can distinguish and resolve the communication data and perception data of the terminal user and other perception targets, and realize the perception process of perception cooperative communication and fine perception. To this end, the present invention proposes a design scheme of a wireless baseband processing method and device that can realize communication perception integration. Summary of the invention

[0005] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, the purpose of the present invention is to propose a wireless baseband processing method for realizing communication and perception integration, so as to enable the base station to have the ability to send integrated synaesthesia waveforms, and to distinguish and resolve the communication data and perception data of terminal users and other perception targets, while realizing the perception process of perception collaborative communication and fine perception.

[0007] To achieve the above-mentioned purpose, the first aspect of the present invention proposes a wireless baseband processing method for realizing integrated communication and perception, including:

[0008] The design is based on the base station wireless baseband processing flow, adding an ISAC beam management module in the transmitter and a sensing function module SF in the receiver;

[0009] Sending a wide interaceptive transmission beam through the ISAC beam management module and extracting sensing information from the reflected sensing echo through the SF module, wherein the sensing information includes a target position;

[0010] Based on the perception information, the ISAC beam management module narrows the beam and aims at the target position to send a narrow synaesthesia transmission beam;

[0011] A method for distinguishing echo data of an uplink communication beam and a synaesthesia transmission beam received by the base station is designed, wherein the synaesthesia transmission beam includes a wide synaesthesia transmission beam and a narrow synaesthesia transmission beam, so that the base station distinguishes communication and perception data from the uplink communication beam and the echo data.

[0012] In addition, a wireless baseband processing method for realizing integrated communication and perception according to the above embodiment of the present invention may also have the following additional technical features:

[0013] Further, in one embodiment of the present invention, sending the wide synaesthesia transmission beam through the ISAC beam management module and extracting the perception information from the reflected perception echo through the SF module includes:

[0014] Get target synaesthesia request;

[0015] Establishing and sending an initial beam according to the synaesthesia request by the base station, including sending a wide synaesthesia transmission beam at a regular period;

[0016] The uplink communication data and the interaceptive transmission beam are received by the base station receiver, the reflection perception data are extracted from the uplink communication data and the wide interaceptive transmission beam, and the perception information is acquired from the reflection perception data through the SF module.

[0017] Furthermore, in one embodiment of the present invention, the wide synaesthesia beam may select a beam with a large beam width according to specific synaesthesia service requirements, or select a narrow beam with a small beam width for time-division scanning to cover a large-angle fan-shaped area.

[0018] Further, in one embodiment of the present invention, based on the perception information, narrowing the beam to align the target through the ISAC beam management module to send a narrow synaesthesia transmission beam includes:

[0019] Sending a plurality of synaesthesia signals through the base station and carrying them on a plurality of narrow beams;

[0020] The narrow synaesthesia transmission beam is aligned with the target direction according to the perception information, and a multi-beam pair link is established with multiple users to realize communication cooperative perception.

[0021] Furthermore, in one embodiment of the present invention, it also includes:

[0022] The demand for service perception is met by adjusting the ratio of the synaesthesia signal in the resource grid, wherein the resource grid comprises subcarriers in frequency and symbols in time.

[0023] Further, in one embodiment of the present invention, a method for distinguishing the uplink communication beam received by the base station and the echo data of the synaesthesia waveform provides a time domain distinction method, specifically including:

[0024] defining a new frame structure in which a plurality of flexible time slots are allocated;

[0025] The time-frequency domain resource blocks required for downlink communication transmission are separately allocated in the flexible time slot to realize the transmission of the synaesthesia signal and the communication data in the downlink symbol, the uplink sensing echo data is received by separately allocating the sensing exclusive time-frequency domain resources in the flexible time slot, and the uplink communication transmission data is received in the uplink time slot;

[0026] Distinguish uplink communication transmission data and uplink sensing echo data in the time domain.

[0027] Further, in one embodiment of the present invention, the method for distinguishing the uplink communication beam received by the base station and the echo data of the synaesthesia waveform includes:

[0028] defining a new frame structure in which a plurality of flexible time slots are allocated;

[0029] A process in which a self-contained time slot is defined in the flexible time slot to realize reception of uplink communication transmission data in the uplink time slot, and uplink perception echo data is received by defining a self-contained time slot in the flexible time slot and separately allocating perception-exclusive time-frequency domain resources;

[0030] Distinguish uplink communication transmission data and uplink sensing echo data in the time domain.

[0031] Further, in one embodiment of the present invention, the method for distinguishing the uplink communication beam received by the base station and the echo data of the synaesthesia waveform provides another time domain distinction method, specifically including:

[0032] By distinguishing the reception time of uplink communication transmission data and uplink perception echo data, the uplink communication transmission data is received in the uplink time slot, and the uplink perception echo data is received by occupying the time-frequency domain resources of the protection band in the flexible time slot, so as to decode the communication data and perception data received at different times.

[0033] To achieve the above-mentioned purpose, the second aspect of the present invention proposes a wireless baseband processing method and device for realizing integrated communication perception, comprising the following modules:

[0034] A coding mapping module, used to encode the original information bits to generate a data code stream, obtain the coding mapping result on each antenna port, and transmit the coding mapping result through a logical interface;

[0035] A carrier modulation module, used for receiving the coding mapping result, modulating the coding mapping result to a carrier, obtaining a digital quantity of discrete time, and transmitting it;

[0036] A digital / analog conversion module, used to convert the carrier modulation result from the discrete time digital quantity into a continuously changing analog quantity, and then obtain a synaesthesia signal through orthogonal modulation;

[0037] An up-conversion processing module, used for modulating the synaesthesia signal to the radio frequency end transmission frequency band to generate a baseband transmission signal;

[0038] The ISAC beam management module is used to execute the beam management process, adjust the parameters of the basic unit of the multi-antenna array phase through the beam forming technology according to the beam established and maintained by the baseband transmission signal, adjust the beam shape and direction, and obtain the synaesthesia waveform; and the base station transmits the multi-antenna transmission synaesthesia integrated signal according to the synaesthesia waveform;

[0039] A down-conversion processing module is used to demodulate the received synaesthesia integrated signal into a baseband signal to obtain a down-conversion processing result;

[0040] An analog / digital conversion module, used for converting the down-conversion processing result from an analog domain waveform into a digital domain waveform;

[0041] A carrier demodulation module is used to convert a digital domain waveform into a demodulation output signal in a symbol format through Fourier transform to obtain a carrier demodulation result;

[0042] A decoding and mapping module is used to receive the carrier demodulation result, process the obtained symbol format to generate a data code stream in a 0-1 bit format, and decode the data code stream to generate original bit information;

[0043] The perception function module is used to process the perception signal of the analog / digital conversion result to obtain the perception data.

[0044] To achieve the above-mentioned purpose, the third aspect of the present invention proposes a computer device, characterized in that it includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, it implements a wireless baseband processing method for realizing integrated communication perception as described above.

[0045] To achieve the above-mentioned purpose, the fourth aspect of the present invention proposes a computer-readable storage medium on which a computer program is stored, characterized in that when the computer program is executed by a processor, it implements a wireless baseband processing method for realizing integrated communication perception as described above.

[0046] The wireless baseband processing for realizing integrated communication and perception proposed in the embodiment of the present invention is designed for the physical layer transmitter and receiver of the base station, and an ISAC beam management module is added in the transmitter, and the beam management process is specifically designed in this module, and beam processing methods for different beam management stages are specifically proposed respectively, and the perception process of perception cooperative communication and fine perception is realized through this module; a perception function module is added in the receiver, and the base station can extract the perception information from the synaesthesia signal through this module, so that the base station has the synaesthesia function. Finally, the method for distinguishing the uplink communication data and the reflected perception data received by the base station is designed, and the base station can distinguish the communication and perception data from the received data. It can solve the problems in the prior art that the synaesthesia base station cannot send the synaesthesia integrated waveform, cannot distinguish and resolve the communication data and perception data of the terminal user and the perception target, and the perception process cannot perceive the perception object of the non-access communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0048] Figure 1 A flow chart of a wireless baseband processing method design for realizing integrated communication and perception provided by an embodiment of the present invention;

[0049] Figure 2 A schematic diagram of a physical layer synaesthesia waveform integrated transmitter design provided by an embodiment of the present invention;

[0050] Figure 3 A schematic diagram of a physical layer synaesthesia waveform integrated receiver design provided by an embodiment of the present invention;

[0051] Figure 4 A schematic diagram of a transmission wide interaceptive transmission beam design process provided by an embodiment of the present invention;

[0052] Figure 5A schematic diagram of a design process for a transmission narrow synaesthesia transmission beam provided by an embodiment of the present invention;

[0053] Figure 6 A schematic diagram of an example design of a solution for distinguishing uplink communication transmission data and uplink perception echo data in the time domain provided by an embodiment of the present invention;

[0054] Figure 7 A schematic diagram of another exemplary design of a solution for distinguishing uplink communication transmission data and uplink perception echo data in the time domain provided by an embodiment of the present invention;

[0055] Figure 8 A schematic diagram of the design of a wireless baseband processing device for realizing integrated communication and perception provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0056] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0057] The following describes a wireless baseband processing method and device for realizing communication perception integration according to an embodiment of the present invention with reference to the accompanying drawings.

[0058] Example 1

[0059] Figure 1 A flow chart of a wireless baseband processing method for realizing integrated communication and perception provided by an embodiment of the present invention.

[0060] like Figure 1 As shown, the wireless baseband processing method for realizing integrated communication and perception includes the following steps:

[0061] S101: Designed based on the base station wireless baseband processing flow, a new ISAC beam management module is added to the transmitter, and a new sensing function module SF is added to the receiver;

[0062] S102: sending a wide interaceptive transmission beam through the ISAC beam management module and extracting sensing information from the reflected sensing echo through the SF module, where the sensing information includes a target position;

[0063] S103: Based on the perception information, the ISAC beam management module narrows the beam and sends a narrow synaesthesia transmission beam to the target position;

[0064] S104: Designing a method for distinguishing echo data of an uplink communication beam and a synaesthesia transmission beam received by the base station, wherein the synaesthesia transmission beam includes a wide synaesthesia transmission beam and a narrow synaesthesia transmission beam, so that the base station distinguishes communication and perception data from the uplink communication beam and the echo data.

[0065] Through the above steps, a perception function module (SF) and an ISAC beam management module are added on the basis of the traditional base station wireless baseband processing flow. Through the SF module, the base station can extract the perception information from the synaesthesia signal, so that the base station has the integrated communication and perception function. Through the ISAC beam management module, the base station can use a wide synaesthesia transmission beam to achieve a wide range of perception, and further adjust the synaesthesia beam through the beamforming technology according to the acquired perception information, and use a narrow synaesthesia transmission beam to align the synaesthesia object to achieve high-gain communication and more accurate perception of perception cooperative communication. Finally, a method for distinguishing the uplink communication data and reflected perception data received by the base station is designed, and the base station can distinguish the communication and perception data from the received data. The embodiment of the present invention designs a transmission wide synaesthesia transmission beam process and a transmission narrow synaesthesia transmission beam process respectively, and provides two adaptively selectable time domain schemes for distinguishing uplink communication transmission data and uplink perception echo data.

[0066] Specifically, for step S101, see Figure 2 , in order to enable the base station to have the function of sending synaesthesia integrated waveform, Figure 2 A schematic diagram of a physical layer synaesthesia waveform integrated transmitter design is proposed for an embodiment of the present invention, which is applied to a base station on a radio access network (RAN) side, including:

[0067] Coding and mapping module: encode the original information bits, generate a data code stream, and scramble and map the data code stream to map the 0-1 bit format into a symbol format. After the original information bits obtain one or two code words in the transmission block through the encoding process, the 0-1 bit format is mapped into a symbol format by scrambling and mapping the coded bits. Here, the generated constellation mapping symbols are layer mapped and spatially precoded to obtain the coding mapping symbols on each antenna port. The coding process includes but is not limited to source coding, channel coding, interleaving and rate matching. The source coding includes but is not limited to Huffman coding, the channel coding is not limited to polar code, LDPC code, Turbo code and convolutional code, the interleaving corrects burst errors through an interleaver, the rate matching performs different processing according to the different code stream lengths after channel coding, so that the code stream length matches the actual transmission capacity, the scrambling process performs regular random processing on the signal code elements, and the mapping process includes but is not limited to constellation mapping. The coding mapping symbol is the output result of the coding mapping module.

[0068] Carrier modulation module: used to receive the coding mapping result and modulate the coding mapping result to the carrier for transmission. The modulation is to select different modulation modes, including but not limited to single-carrier modulation and multi-carrier modulation. The single-carrier modulation is to modulate the coding mapping result to a single carrier for transmission, such as QAM, etc. The multi-carrier modulation is to modulate the coding mapping result to multiple carriers for transmission, such as OFDM, OFTS, etc.

[0069] The embodiment of the present invention adopts OFDM modulation in multi-carrier modulation. Since the coding mapping result is a serial input, a serial-to-parallel conversion is first performed to convert the high-speed serial transmission into a low-speed parallel transmission. Then, the inverse fast Fourier transform (IFFT) is used to convert the frequency domain signal into a time domain signal. Then, a parallel-to-serial conversion is performed to convert the signal transmission mode from parallel transmission to serial transmission. Finally, a cyclic prefix is ​​added to the signal to obtain the carrier modulation result of each antenna port, and the carrier modulation result is in a digital signal format.

[0070] Digital / analog conversion module: used to convert the carrier modulation result from digital signal format to analog signal format.

[0071] Up-conversion processing module: used to modulate the baseband signal to the RF transmission frequency band.

[0072] ISAC beam management module: used to execute the beam management process, establish and maintain appropriate beams, adjust the parameters of the basic unit of the multi-antenna array phase through beamforming technology, adjust the beam shape and direction, and obtain the synaesthesia waveform. The beam management process includes two parts. The first part is the wide synaesthesia transmission beam management process. The base station realizes wide-area perception by sending a wide synaesthesia transmission beam and extracting the perception data from the reflected perception echo; the second part is the narrow synaesthesia transmission beam management process. Based on the perception data extracted from the first part and the synaesthesia requirements of the business scenario, the base station adjusts the antenna's beam width and the up, down, left, and right directions to realize three-dimensional precise beamforming, so that the radiated energy is concentrated on the direction of the terminal device and the perception object perceived by the first part, and continuously tracks according to the echo signal to achieve high signal gain communication and more refined perception.

[0073] The beam management process is performed by the ISAC beam management module, including:

[0074] The parameters of the basic unit of the multi-antenna array phase are adjusted by the beamforming technology to adjust the beam shape and direction, wherein the beamforming technology includes a beamforming algorithm, specifically according to the following formula:

[0075]

[0076] Among them, s T(t, α, β) is the composite signal aligned with the spatial angle (α, β), α is the horizontal angle of the beam relative to the antenna boresight, β is the elevation angle of the beam relative to the antenna boresight, λ is the wavelength of the electromagnetic wave sending the signal, N is the total number of antennas, (x n ,y n , z n ) is the position of the nth antenna element in space, s n (t) is a scalar representation of the signal to be sent.

[0077] Finally, the synaesthesia integration signal is transmitted by the transmitting antenna.

[0078] See also Figure 3 , in order to enable the base station to support the function of receiving and processing the synaesthesia integrated waveform, Figure 3 A schematic diagram of a physical layer synaesthesia waveform integrated receiver design proposed in an embodiment of the present invention, which is applied to a base station on a wireless access network side, includes:

[0079] The synaesthesia integration signal is received by the receiving antenna.

[0080] Down-conversion processing module: used for demodulating the received synaesthesia integrated signal into a baseband signal to obtain a down-conversion processing result, wherein the down-conversion processing result is in an analog signal format.

[0081] Analog / digital conversion module: used to convert the down-conversion processing result from an analog signal format to a digital signal format to obtain an analog / digital conversion result.

[0082] The analog / digital conversion results are copied, one of which enters the communication processing flow, and the other analog / digital conversion result enters the perception processing flow.

[0083] The communication processing flow is as follows:

[0084] The analog-to-digital conversion result is transmitted to the carrier demodulation module through the logic interface.

[0085] Carrier demodulation module: used to receive the analog / digital conversion result, demodulate the analog / digital conversion result, and obtain a demodulated output signal, which is in symbol format. Then, using the channel estimation result of each receiving antenna port, the carrier demodulation result is subjected to spatial channel equalization processing to obtain a carrier demodulation result. The demodulation is to select a corresponding demodulation mode according to the modulation mode in the carrier modulation module. The demodulation mode includes but is not limited to single-carrier demodulation and multi-carrier demodulation. The single-carrier demodulation is such as QAM demodulation, and the multi-carrier demodulation is such as OFDM demodulation, OTFS demodulation, etc.

[0086] The embodiment of the present invention adopts OFDM demodulation in multi-carrier demodulation. First, the cyclic prefix is ​​removed from the signal. Since the analog / digital conversion result is a serial input, a serial-to-parallel conversion is required to convert the high-speed serial transmission into a low-speed parallel transmission. Then, a fast Fourier transform (FFT) is used to convert the time domain signal into a frequency domain signal. Finally, a parallel-to-serial conversion is performed to convert the signal transmission mode from parallel transmission to serial transmission to obtain a demodulated output signal, and the demodulated output signal is in a symbol format.

[0087] The decoding and mapping module is used to receive the carrier demodulation result, perform spatial deprecoding and layer inverse mapping, and generate a data code stream in a 0-1 bit format through inverse mapping of the obtained symbol format, and decode the data code stream to generate estimated bit information, which is the communication data. The inverse mapping includes but is not limited to constellation inverse mapping, and the decoding process includes but is not limited to deinterleaving, channel decoding, source decoding and other steps. The decoding process corresponds to the encoding process of the encoding and mapping module, which will not be repeated here. The decoding and mapping result is the communication data.

[0088] The perception processing flow is as follows:

[0089] The analog / digital conversion result is transmitted to the perception function module through the logic interface.

[0090] Further, in one embodiment of the present invention, sending a wide synaesthesia transmission beam through an ISAC beam management module and extracting perception information from the reflected perception echo through an SF module includes:

[0091] Get target synaesthesia request;

[0092] Establishing and sending an initial beam according to the synaesthesia request by the base station, including sending a wide synaesthesia transmission beam at a regular period;

[0093] The uplink communication data and the interaceptive transmission beam are received by a base station receiver, the reflection perception data are extracted from the uplink communication data and the wide interaceptive transmission beam, and the perception information is obtained from the reflection perception data through the SF module.

[0094] The format of the perception information is point cloud information of signal strength, and each point in the point cloud represents a parameter group consisting of speed, distance, and direction.

[0095] Furthermore, in one embodiment of the present invention, the wide synaesthesia beam may select a beam with a large beam width according to specific synaesthesia service requirements, or select a narrow beam with a small beam width for time-division scanning to cover a large-angle fan-shaped area.

[0096] Specifically, the base station initially sends multiple synaesthesia signals and carries them on different downlink beams, and the synaesthesia signals should be able to be transmitted periodically, semi-persistently or aperiodically (event triggered), and have the characteristics of wide coverage, continuous search or periodic broadcast, etc., including but not limited to synchronization signals (SS) and physical broadcast channels (PBCH).

[0097] Optionally, due to the requirement of the sensing coverage range, the downlink beam may adopt a beam with a large beam width, or may adopt a narrow beam with a small beam width for time-division scanning, covering a large angle fan-shaped area, so as to realize the expansion of the sensing range of the base station sensing the environment and the user terminal. The narrow beam time-division scanning may determine the azimuth and tilt direction of different beams according to the specific sensing service requirements (such as the sensing range), adopt different antenna static weights, and use the beamforming algorithm to generate multiple static narrow beams in different directions to carry the synaesthesia signal, and adopt the time-division scanning and one-by-one transmission method to achieve full coverage of the sensing range during transmission.

[0098] Specifically, after the user or application function triggers the synaesthesia request, the base station will establish and send the initial beam according to the synaesthesia request, and before the service ends, send a synaesthesia waveform with a wide beam shape at a regular period to obtain the perception information of a large range around the base station; after the base station sends the initial beam, the user or terminal establishes a beam pair for communication after access, and after the base station receiver receives the uplink communication data and reflection perception data, it extracts the reflection perception data from the data and obtains the perception information from the reflection perception data. The extraction of reflection perception data is the signal processing process in the receiver, and the acquisition of perception information is the signal processing process of the perception function module in the receiver.

[0099] Further, in one embodiment of the present invention, based on the perception information, narrowing the beam to align the target through the ISAC beam management module to send a narrow synaesthesia transmission beam includes:

[0100] Multiple synaesthesia signals are sent through a base station and carried on multiple narrow beams;

[0101] According to the perception information, the narrow synaesthesia transmission beam is aligned with the target direction, and multi-beam pair links are established with multiple users to achieve communication collaborative perception.

[0102] Specifically, the base station sends multiple synaesthesia signals and carries them on multiple narrow beams, wherein the synaesthesia signals include but are not limited to channel state information reference signal (CSI-RS), demodulation reference signal (DMRS) and data payload signal of transmission data; after the base station obtains the rough positions of multiple terminal devices and sensing objects from the echo information of the wide synaesthesia transmission beam, the base station adjusts the subsequent beams sent through the ISAC beam management module, uses the beamforming algorithm to adjust the phase transmission signal of the multi-antenna, narrows the beam, and aligns the narrowed beam direction with the synaesthesia according to the movement, steering and other behaviors of the sensing object. The base station can establish a multi-beam pair link with multiple users in the target direction, so that the base station can obtain the maximum signal gain in the target direction and improve the perception accuracy. The integrated base station can provide multiple different data streams for multiple terminal devices or multiple perception objects through multiple access technology, or receive data streams from multiple terminals and receive signal echoes from multiple perception objects in parallel, and obtain the location information of multiple terminal devices or other perception objects from the perceived echo information in real time. The beam management module can be used to adjust and maintain the beam to maintain good wireless connection and fine perception. The multiple access technology includes but is not limited to space division multiple access technology. The beam adjustment process first obtains the physical parameters of the perception information obtained by the perception processing module to obtain the spatial steering vector of the beam to be transmitted, and weights each element on the antenna array element so that the output signal of the beamforming algorithm is narrowed and can point to a certain direction. The spatial steering vector can be specifically calculated according to the following formula:

[0103]

[0104] In the above formula, θ is the angle of the beam relative to the antenna boresight, d is the array element spacing, f0 is the frequency of the transmitted signal, and c is the speed of electromagnetic wave propagation.

[0105] The antenna element weighting process can be specifically based on the following formula:

[0106] w=[w0,w1,...,w M-1 ] T

[0107] In the above formula, M is the number of arrays and w is the beamforming weight vector.

[0108] The beamforming algorithm can be specifically based on the following formula:

[0109]

[0110] In the above formula, y(t,θ) is the beamforming signal, θ is the angle of the beam relative to the antenna boresight, M is the number of arrays, and x is i (t) is the signal on each array, x is the array signal vector, s(t) is the original signal, w His the beamforming weight vector, and a(θ) is the spatial steering vector.

[0111] The process of narrowing the beam is the process of adjusting the beam width, which can be specifically calculated according to the following formula:

[0112]

[0113] In the above formula, θ BW is the beam width transmitted by the antenna, which is defined as the angle between the two directions where the radiation power on both sides of the main lobe of the antenna signal drops by 3db (rad); k is the beam width factor, and k = 0.886 under uniform aperture illumination; λ is the wavelength of the electromagnetic wave of the transmitted signal, N is the number of linear array elements, d is the array element spacing, and θ0 is the angle of the beam relative to the antenna boresight.

[0114] Optionally, if the synaesthesia signal uses a reference signal, and the reference signal is transmitted together with the data payload signal, and the modulation and demodulation method at the transceiver adopts a multi-carrier modulation and demodulation method, then the ratio of the reference signal and the data payload signal in the resource grid can be adaptively adjusted according to the needs of business communication and perception. For example, in high-speed mobile scenarios or scenarios where only perception is not required, the base station's demand for perception performance is higher than the communication performance requirement. The base station can achieve high perception performance requirements by increasing the resource ratio of the reference signal in the resource grid. The resource grid consists of subcarriers (resource blocks) in frequency and symbols in time, and the symbols include but are not limited to OFDM symbols, OFTS symbols, etc.

[0115] Optionally, the proportion of synaesthesia signals in the resource grid may be adjusted according to business perception requirements. For example, a higher ranging perception accuracy may be obtained by increasing the proportion of synaesthesia signals in the frequency domain resource blocks in the resource grid, or a higher speed measurement perception accuracy may be obtained by increasing the proportion of synaesthesia signals in the time domain resource blocks in the resource grid.

[0116] Specifically, the perceptual signal processing includes:

[0117] The distance between the sensing target and the base station antenna is calculated based on the delay time between the echo signal and the transmission signal and the propagation speed of electromagnetic waves in the air. The calculation formula is as follows:

[0118]

[0119] Among them, t r is the delay time between the echo signal and the transmitted signal, c is the propagation speed of electromagnetic waves in the air, and d is the distance between the sensing target and the base station antenna;

[0120] The speed of the perceived target is calculated based on the propagation speed of electromagnetic waves in the air, the Doppler frequency shift, and the emission frequency of the synaesthesia integrated waveform. The Doppler frequency shift is the frequency offset between the emission frequency of the synaesthesia integrated waveform and the echo signal. The calculation formula is as follows:

[0121]

[0122] Where c is the propagation speed of electromagnetic waves in the air, f′0-f0 is the Doppler frequency shift, f′0 is the frequency of the received echo signal, and f0 is the frequency of the transmitted signal;

[0123] The direction of the perceived target is obtained by using an antenna array and a direction of arrival estimation technology, wherein the direction of arrival estimation technology includes a BARTLETT algorithm and a MUSIC algorithm.

[0124] Among them, the BARTLETT algorithm includes:

[0125] According to the phase difference caused by the different spatial positions of multi-element antennas, the data received by each array element in the spatial domain is used to replace the time domain data in the traditional time domain processing, and the time difference of the received signal reaching different antenna elements at different estimated direction angles is obtained. The antenna array is defined to receive k reflected signals, and the calculation formula is as follows:

[0126]

[0127] where d m is the distance between different receiving antennas, c is the propagation speed of electromagnetic waves in the air, θ k is the estimated direction arrival angle of the received echo signal, t mk is the time difference of the received signal arriving at different antenna array elements; based on the time difference of the received signal arriving at different antenna array elements at different estimated direction angles, a spatial steering vector in the direction of the incoming wave is constructed:

[0128]

[0129] Where α is the angle between the given incoming wave direction and the antenna line of sight, d is the array element spacing, f0 is the frequency of the transmitted signal, and c is the speed of electromagnetic wave propagation. By giving different angle values ​​α, the spatial steering vector is scanned within the array angle range, and the spatial spectrum peak appears at the signal incident position, and the direction of the perceived target is obtained. The specific process is to do the vector inner product of the spatial steering vector and the received signal vector, as shown in the following formula:

[0130] y=a H (α)·x(n)

[0131] Where a(α) is the spatial steering vector, x(n) is the antenna element receiving signal vector, and when the scalar y takes the maximum value, the value of α is the estimated angle of the incoming wave direction relative to the antenna boresight, which is output as the DOA estimation result.

[0132] The physical layer synaesthesia waveform integrated receiver design schematic diagram can enable the base station to have the function of receiving and processing the synaesthesia integrated waveform.

[0133] Specifically, for step S103, see Figure 4 In order to enable the initial synaesthesia waveform initially sent by the synaesthesia integrated base station to perceive the terminal device and the perception object, this embodiment provides a beam management process for the synaesthesia integrated base station to initially send the synaesthesia integrated beam. The initially sent synaesthesia integrated beam uses a wide synaesthesia transmission beam process, and the scanning range of the synaesthesia transmission beam should cover the entire angular sector served by the base station. Figure 4 A schematic diagram of the design process for transmitting a wide synaesthesia transmission beam.

[0134] The present invention is described in detail below through Examples 2 and 3.

[0135] Example 2

[0136] like Figure 4 As shown, embodiment 2 is different from other embodiments in the shape of the downlink beam sent and the way of receiving the sensing data. A wide interawareness transmission beam management process is executed (S102) for the terminal devices (410a-410c) and the sensing objects (420) within the service range of the base station (400), wherein the execution of the wide interawareness transmission beam management process includes:

[0137] During the wide synaesthesia transmission beam management process, a synaesthesia signal is transmitted. The base station initially sends a plurality of synaesthesia signals and carries them on different downlink beams. The downlink beam adopts a beam with a large beam width (450). In order for the base station to obtain the position of the sensing terminal device and the sensing object, the synaesthesia signal should be able to be transmitted periodically, semi-persistently or non-periodically (event triggered), and can be carried on a beam with a large beam width for transmission. It has the characteristics of wide coverage, sustainable search or periodic broadcast, including but not limited to synchronization signals (SS) and physical broadcast channels (PBCH) carried by the wide beam. After the base station sends the initial beam, the user or terminal establishes a beam pair for communication after access. After the base station receiver receives the uplink transmission communication data (470) and the uplink perception echo data (480), it distinguishes the reflection perception data from the data, and obtains the perception information of the terminal device (410a-410c) and the perception object (420) from the reflection perception data. Each time the base station sends an integrated interawareness signal, it can receive the perception beam from the entire coverage range. The frequency of performing perception is slow, and a guard band time slot can be allocated based on the frame unit to receive the perception data. The decompression of the reflection perception data is a signal processing process in the receiver, and the acquisition of the perception information is a signal processing process of the perception function module in the receiver.

[0138] After the user or application function triggers the synesthesia request, the base station will establish and send the initial beam according to the synesthesia request, and before the service ends, it will send a synesthesia waveform with a wide beam shape at a regular period to obtain perception information in a wide range around the base station.

[0139] Example 3

[0140] like Figure 4 As shown, the second embodiment is different from other embodiments in the shape of the downlink beam sent and the way of receiving the sensing data. A wide interawareness transmission beam management process is executed (S102) for the terminal devices (410a-410c) and the sensing objects (420) within the service range of the base station (400), wherein the execution of the wide interawareness transmission beam management process includes:

[0141] During the wide interaceptive transmission beam management process, the interaceptive signal is transmitted. The base station initially sends multiple interaceptive signals and carries them on different downlink beams. The downlink beam uses a narrow beam (460a-460g) with a small beam width for time division scanning. In order for the base station to sense and obtain the position of the terminal device and the sensing object, the interaceptive signal should be able to be transmitted periodically, semi-persistently or non-periodically (event triggered), and has the characteristics of wide coverage, sustainable search or periodic broadcast, including but not limited to the synchronization signal (SS) and physical broadcast channel (PBCH) carried by the time-division narrow beam after beamforming. After the base station sends the initial beam, the user or terminal establishes a beam pair for communication after access. After the base station receiver receives the uplink transmission communication data (470) and the uplink sensing echo data (480), it distinguishes the reflection sensing data from the data, and obtains the sensing information of the terminal device (410a-410c) and the sensing object (420) from the reflection sensing data. Each time the base station sends the integrated interaural signal, it is a group of time-division scanned narrow beam signals. It is necessary to receive the echo signal after sending the narrow beam signal in batches to perform perception. The frequency of performing perception is relatively fast. After sending the narrow beam signal, a time slot can be allocated separately to receive the perception data, or the perception data can be received by distinguishing the dedicated antenna port. The decomposition of the reflected perception data is the signal processing process in the receiver, and the acquisition of the perception information is the signal processing process of the perception function module in the receiver.

[0142] After the user or application function triggers the synesthesia request, the base station will establish and send the initial beam according to the synesthesia request, and before the service ends, it will send a wide-coverage time-division scanning narrow beam synesthesia waveform at a regular period to obtain a wide range of perception information around the base station.

[0143] Specifically, a narrow synaesthesia transmission beam management process is performed (S103) for terminal devices (410a-410c) and sensing objects (420) within a service range of the base station (400), wherein the narrow synaesthesia transmission beam management process includes:

[0144] After the base station obtains the rough position of the terminal device (410a-410c) and the sensing object (420) from the wide synaesthesia transmission beam echo information (S102), the ISAC beam management module adjusts the subsequent beams (550a-550d) to be sent, trains the beams, dynamically weights the transmission signals, and uses the beamforming algorithm to adjust the phase transmission signals of the multiple antennas to narrow the beams and form narrow synaesthesia transmission beams. The multiple synaesthesia signals sent by the base station are carried on the multiple narrow synaesthesia transmission beams, and the synaesthesia signals include but are not limited to channel state information reference signals (CSI-RS), demodulation reference signals (DMRS) and data payload signals of transmission data. The base station aligns the wide synaesthesia transmission beam with the direction of the synaesthesia object. At the same time, if the terminal device also has multiple antennas and a beam management function, it can also send a narrow transmission beam (560) to establish a beam pair link. After the base station establishes a beam pair with the terminal device for communication, each time after sending a narrow interaceptive transmission beam, an echo signal is received to perform perception. The base station receiver receives uplink transmission communication data (570) and uplink perception echo data (580), distinguishes reflection perception data from the data, and obtains perception information of the terminal device (410a-410c) and the perception object (420) from the reflection perception data, and can track the terminal device (410a-410c) and the perception object (420) according to the resolved perception information. The resolved reflection perception data is a signal processing process in the receiver, and the acquisition of perception information is a signal processing process of the perception function module in the receiver. The beam training process can refer to the following formula:

[0145] Y (E) [k] = Z * H[k]W+V (E) [k],

[0146] Among them, Y (E) [k] is the total response of the beam training on the kth subcarrier, which is a matrix of (n1*n2) dimensions, where n1 represents the direction in which the receiving end has n1 beams, and n2 represents the direction in which the transmitting end has n2 beamforming; Z * is the combiner matrix for all beam directions, which is a matrix of (n1*m) dimensions, where m represents the number of antennas; H[k] is the MIMO channel matrix on the kth subcarrier; W is the precoder matrix for all beam directions, which is a matrix of (m*n2) dimensions; V (E) [k] is the post-processing noise that may be generated by beam training on the k-th subcarrier, which is a matrix of (n1*n2) dimensions.

[0147] According to the perception information obtained from the synaesthesia integrated signal echo, the beam training amount of the base station can be reduced and the performance of the communication system can be improved. The ISAC module then selects the appropriate beam pair in the beam training process for beamforming, and enables the beam to continuously track the position of the synaesthesia integrated object. Through the narrow synaesthesia transmission beam management process, the base station establishes a multi-beam pair link with multiple users, and the base station obtains the maximum signal gain in the target direction and obtains fine perception.

[0148] In this embodiment, the integrated telepathy base station provides multiple different data streams for multiple terminal devices or multiple perception objects through space division technology, or receives data streams from multiple terminals and signal echoes from multiple perception objects in parallel, obtains the location information of multiple terminal devices or other perception objects from the perceived echo information in real time, adjusts and maintains the beam through the ISAC beam management module, and maintains good wireless connection and fine perception.

[0149] Optionally, this embodiment provides an adaptive synaesthesia solution, which can adaptively adjust the perception mode according to the needs of business communication and perception.

[0150] Specifically, if the synaesthesia signal uses a reference signal, and the reference signal is transmitted together with the data payload signal, the ratio of the synaesthesia signal to the data payload signal in the resource grid can be adaptively adjusted according to the needs of business communication and perception. For example, in high-speed mobile scenarios or scenarios such as perception only without communication, the base station's demand for perception performance is higher than the communication performance demand. The base station can achieve high perception performance requirements by increasing the resource ratio of the synaesthesia signal in the resource grid.

[0151] Furthermore, in one embodiment of the present invention, it also includes:

[0152] By adjusting the ratio of the synaesthesia signal in the resource grid, the service perception requirement is met. The resource grid consists of subcarriers in frequency and symbols in time.

[0153] Specifically, the proportion of the synaesthesia signal in the resource grid can be adjusted according to the needs of business perception. For example, a higher ranging perception accuracy can be obtained by increasing the proportion of the synaesthesia signal in the frequency domain resource block in the resource grid, or a higher speed perception accuracy can be obtained by increasing the proportion of the synaesthesia signal in the time domain resource block in the resource grid. The resource grid composition includes subcarriers (resource blocks) in frequency and OFDM symbols in time.

[0154] Specifically, for step 104, after the base station sends the synaesthesia waveform, the receiver will receive the uplink communication transmission data from the terminal device and the uplink perception echo data from the perception object or environment. In order for the receiver to distinguish the received data and respectively decipher the communication data and the perception data, it is necessary to design a mode for the receiver to distinguish the uplink communication transmission data and the uplink perception echo data.

[0155] Further, in one embodiment of the present invention, a method for distinguishing the uplink communication beam received by the base station and the echo data of the synaesthesia waveform provides a time domain distinction method, specifically including:

[0156] Define a new frame structure and allocate multiple flexible time slots in the frame structure;

[0157] The time-frequency domain resource blocks required for downlink communication transmission are separately allocated in the flexible time slot to realize the transmission of the synaesthesia signal and the communication data in the downlink symbol, and the uplink sensing echo data is received by separately allocating the sensing exclusive time-frequency domain resources in the flexible time slot, while the uplink communication transmission data is received in the uplink time slot;

[0158] Distinguish uplink communication transmission data and uplink sensing echo data in the time domain.

[0159] Further, in one embodiment of the present invention, the method for distinguishing the uplink communication beam received by the base station and the echo data of the synaesthesia waveform provides another time domain distinction method, specifically including:

[0160] By distinguishing the reception time of uplink communication transmission data and uplink perception echo data, the uplink communication transmission data is received in the uplink time slot, and the uplink perception echo data is received by occupying the time-frequency domain resources of the protection band in the flexible time slot, so as to decode the communication data and perception data received at different times.

[0161] The present invention is described in detail below through Examples 4 and 5.

[0162] Example 4

[0163] like Figure 6 As shown, by distinguishing the reception time of uplink communication transmission data and uplink perception echo data, the communication data and perception data received at different times are solved. Different from other embodiments, embodiment 4 achieves the purpose of separating the uplink communication transmission data and the uplink perception echo data on reception by allocating separate time-frequency resources to receive the uplink perception echo data stream. This scheme adopts time division multiplexing. By designing the TDD frame structure, separate perception resources can be allocated at the symbol level, time slot level or subframe level to receive the perception echo data. The perception frequency is faster, and corresponding signaling indications need to be designed to indicate these different types of frames.

[0164] Specifically, the TDD frame period in the fifth generation mobile communication technology can be roughly divided into three parts: downlink time slot, flexible time slot and uplink time slot. Figure 6 As shown, in Example 4, a new TDD frame structure is defined, and multiple flexible time slots are allocated in the frame structure. The time-frequency domain resource blocks required for downlink communication transmission are separately allocated in the flexible time slots to realize the transmission of synaesthesia signals and communication data in downlink symbols. The uplink perception echo data is received by separately allocating the perception-exclusive time-frequency domain resources in the flexible time slots, while the uplink communication transmission data is received in the uplink time slots, so as to distinguish the uplink communication transmission data and the uplink perception echo data in the time domain. In this process, this embodiment adopts the time slot structure of the ordinary CP, and a time slot unit in the subframe can be divided into 14 symbol times, and then N (14>N>0) symbol times are divided to receive the uplink reflection perception data, and the remaining (14-N) symbol times are still used to transmit synaesthesia signals and communication data. The symbol time for receiving the downlink reflection perception data should be arranged after the symbol time for transmitting the synaesthesia signal and the communication data. In this embodiment, after the base station triggers the synaesthesia service process, the base station transmits signaling through the PDCCH channel, configures the frame structure described in this embodiment, and realizes the distinction between communication / perception data. It should be particularly noted that the synaesthesia frame structure defined according to the specific synaesthesia service requirements of the present invention should include multiple types, and the appropriate synaesthesia frame structure is configured by signaling in different synaesthesia scenarios. The synaesthesia service requirements include but are not limited to the perception coverage and the perception frequency. For example, for the synaesthesia service with high requirements for the perception coverage, more symbol unit time can be allocated in the frame structure to receive the uplink perception echo data, and the symbol time allocated to receive the uplink reflection perception data is not limited to a time slot unit. Considering the influence of environmental factors such as multipath, signal fading and coverage, sufficient time-frequency domain resources for receiving the uplink perception echo data should be allocated within the time after the synaesthesia signal is sent to receive the perception data; for another example, for the service with high requirements for the perception frequency, more flexible time slots and self-contained time slots can be allocated in the frame structure to increase the frequency of performing perception. In this embodiment, the frequency of performing perception is in units of the time slot duration in the subframe.

[0165] Example 5

[0166] like Figure 7As shown, the distinction method is also a time domain distinction method. By distinguishing the reception time of the uplink communication transmission data and the uplink perception echo data, the communication data and perception data received at different times are solved. Different from other embodiments, the time slots used for receiving the perception reflection data in embodiment 5 will occupy part of the time slots of the protection band that has not been used for communication, and allocate time-frequency resources to receive the uplink perception echo data stream, so as to achieve the purpose of separating the uplink communication transmission data and the uplink perception echo data in the reception. This scheme makes little change to the existing TDD structure, and only needs to define part of the time slots in the existing frame structure protection band to receive the perception echo signal.

[0167] Specifically, the TDD frame period in the fifth generation mobile communication technology can be roughly divided into three parts: downlink time slot, flexible time slot and uplink time slot. Figure 7 As shown, in Example 5, the uplink communication transmission data is received in the uplink time slot, and the uplink perception echo data is received by occupying the time-frequency domain resources of the protection band in the flexible time slot, so as to distinguish the uplink communication transmission data and the uplink perception echo data in the time domain. In this process, this embodiment adopts the time slot structure of the ordinary CP, and a time slot unit in the subframe can be divided into 14 symbol times. There are N time symbols in the flexible time slot used as uplink and downlink protection intervals, and M (N>M>0) symbol times are separated in the uplink and downlink protection intervals to receive the downlink reflection perception data, and the remaining (MN) symbol times are still used as uplink and downlink protection intervals. The symbol time for receiving the downlink reflection perception data should be arranged after the symbol time for transmitting the downlink communication data, and should be arranged before the uplink and downlink protection intervals. In this embodiment, after the base station sends the synaesthesia signal, the base station needs to receive the echo signal within the specified time slot, and the frequency of performing the perception is in units of the duration of the frame.

[0168] Optionally, this embodiment provides an adaptive synaesthesia solution, which can adaptively adjust the perception mode and select different time domain differentiation methods according to the needs of business communication and perception. Specifically, Embodiment 4 allocates a separate perception time slot to receive perception data. The perception frequency is based on the time slot unit in the subframe as a period. The perception frequency is executed faster, and the perception performance is improved by sacrificing part of the communication performance. It is suitable for business scenarios with high requirements for perception performance, such as high-speed mobile scenarios. Embodiment 5 occupies the guard band time slot in the uplink and downlink interval of each frame to receive perception data. The perception frequency is based on the frame unit as a period. The perception frequency is executed slower, which is suitable for business scenarios with lower requirements for perception performance. In the transmission process of the base station executing synaesthesia, the perception mode can be adaptively selected to adapt to the needs of communication and perception.

[0169] Optionally, in addition to the time domain distinction method of embodiments 4 and 5, the distinction method may also be code domain distinction and spatial domain distinction. The code domain distinction is achieved by designing different codebooks for uplink received communication data and uplink perception echo data, and distinguishing the uplink communication transmission data stream and the uplink perception echo data stream through codebook cancellation during reception, and decoding the communication data and perception data at the receiving end. This distinction method has little impact on the communication capacity and is suitable for complex environmental scenarios such as multiple users. The spatial domain distinction uses a dedicated radio frequency channel to receive the perception signal. The antenna array is divided into two parts to receive the uplink communication transmission data stream and the uplink perception echo data stream respectively, and decodes the communication data and perception data at the receiving end. This distinction method requires sacrificing communication spatial domain resources to receive perception data, which will partially affect the communication performance, and requires the base station to have full-duplex capability or equivalent capability, but it is simple in implementation. The code domain distinction and spatial domain distinction methods are both optional embodiments and will not be repeated here.

[0170] The wireless baseband processing method for realizing communication and perception integration proposed in the embodiment of the present invention is designed for the physical layer transmitter and receiver of the base station, and a new ISAC beam management module is added in the transmitter, and the beam management process is specifically designed in this module, and beam processing methods for different beam management stages are specifically proposed respectively, and the perception process of perception cooperative communication and fine perception is realized through this module; a new perception function module is added in the receiver, and the base station can extract the perception information from the synaesthesia signal through this module, so that the base station has the synaesthesia function. Finally, the method for distinguishing the uplink communication data and the reflected perception data received by the base station is designed, and the base station can distinguish the communication and perception data from the received data. It can solve the problems in the prior art that the synaesthesia base station cannot send the synaesthesia integrated waveform, cannot distinguish and resolve the communication data and perception data of the terminal user and the perception target, and the perception process cannot perceive the perception object of the non-access communication.

[0171] In order to implement the above-mentioned embodiment, the present invention also proposes a wireless baseband processing device that realizes integrated communication and perception.

[0172] Figure 8 A schematic diagram of the structure of a wireless baseband processing device for realizing integrated communication and perception provided by an embodiment of the present invention.

[0173] like Figure 8 As shown, the wireless baseband processing device for realizing integrated communication perception includes: a coding mapping module 001, a carrier modulation module 002, a digital / analog conversion module 003, an up-conversion processing module 004, an ISAC beam management module 005, a down-conversion processing module 006, an analog / digital conversion module 007, a carrier demodulation module 008, a decoding mapping module 009, and a perception function module 010, wherein:

[0174] The coding and mapping module is used to encode the original information bits to generate a data code stream, obtain the coding and mapping results on each antenna port, and transmit the coding and mapping results through the logical interface;

[0175] The carrier modulation module is used to receive the code mapping result, modulate the code mapping result to the carrier, obtain the digital quantity of discrete time, and transmit it;

[0176] A digital / analog conversion module is used to convert the carrier modulation result from a discrete-time digital quantity to a continuously changing analog quantity, and then obtain a synaesthesia signal through orthogonal modulation;

[0177] An up-conversion processing module is used to modulate the synaesthesia signal to the RF end transmission frequency band to generate a baseband transmission signal;

[0178] The ISAC beam management module is used to execute the beam management process, establish and maintain the beam according to the baseband transmission signal, adjust the parameters of the basic unit of the multi-antenna array phase through the beamforming technology, adjust the beam shape and direction, and obtain the synaesthesia waveform; and the base station transmits the multi-antenna transmission synaesthesia integrated signal according to the synaesthesia waveform;

[0179] A down-conversion processing module is used to demodulate the received synaesthesia integrated signal into a baseband signal to obtain a down-conversion processing result;

[0180] An analog / digital conversion module, used for converting the down-conversion processing result from an analog domain waveform into a digital domain waveform;

[0181] A carrier demodulation module is used to convert a digital domain waveform into a demodulation output signal in a symbol format through Fourier transform to obtain a carrier demodulation result;

[0182] The decoding and mapping module is used to receive the carrier demodulation result, process the obtained symbol format to generate a data code stream in a 0-1 bit format, and decode the data code stream to generate original bit information;

[0183] The perception function module is used to process the perception signal of the analog / digital conversion result to obtain the perception data.

[0184] To achieve the above-mentioned purpose, the third aspect of the present invention proposes a computer device, characterized in that it includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, it implements the wireless baseband processing method for realizing integrated communication perception as described above.

[0185] To achieve the above-mentioned purpose, the fourth aspect of the present invention proposes a computer-readable storage medium on which a computer program is stored, characterized in that when the computer program is executed by a processor, it implements the wireless baseband processing method for realizing integrated communication perception as described above.

[0186] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0187] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0188] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A wireless baseband processing method for realizing integrated communication and perception, characterized in that: The following steps are involved: The design is based on the base station wireless baseband processing flow, adding an ISAC beam management module in the transmitter and a sensing function module SF in the receiver; Sending a wide interaceptive transmission beam through the ISAC beam management module and extracting sensing information from the reflected sensing echo through the SF module, wherein the sensing information includes a target position; Based on the perception information, the ISAC beam management module narrows the beam and aims at the target position to send a narrow synaesthesia transmission beam; A method for distinguishing echo data of an uplink communication beam and a synaesthesia transmission beam received by the base station is designed, wherein the synaesthesia transmission beam includes a wide synaesthesia transmission beam and a narrow synaesthesia transmission beam, so that the base station distinguishes communication and perception data from the uplink communication beam and the echo data.

2. The method according to claim 1, characterized in that The sending of the wide synaesthesia transmission beam by the ISAC beam management module and extracting the perception information from the reflected perception echo by the SF module include: Get target synaesthesia request; Establishing and sending an initial beam according to the synaesthesia request by the base station, including sending a wide synaesthesia transmission beam at a regular period; The uplink communication data and the interaceptive transmission beam are received by the base station receiver, the reflection perception data are extracted from the uplink communication data and the wide interaceptive transmission beam, and the perception information is acquired from the reflection perception data through the SF module.

3. The method according to claim 2, characterized in that The wide synaesthesia transmission beam can select a beam with a large beam width according to specific synaesthesia service requirements, or select a narrow beam with a small beam width for time division scanning to cover a large angle fan-shaped area.

4. The method according to claim 1, characterized in that: Based on the perception information, narrowing the beam to align the target through the ISAC beam management module to send a narrow synaesthesia transmission beam includes: Sending a plurality of synaesthesia signals through the base station and carrying them on a plurality of narrow beams; The narrow synaesthesia transmission beam is aligned with the target direction according to the perception information, and a multi-beam pair link is established with multiple users to realize communication cooperative perception.

5. The method according to claim 4, characterized in that Also includes: The demand for service perception is met by adjusting the ratio of the synaesthesia signal in the resource grid, wherein the resource grid comprises subcarriers in frequency and symbols in time.

6. According to the method of claim 1, the method for distinguishing the echo data of the uplink communication beam and the synaesthesia transmission beam received by the base station provides a time domain distinction method, specifically comprising: defining a new frame structure in which a plurality of flexible time slots are allocated; The time-frequency domain resource blocks required for downlink communication transmission are separately allocated in the flexible time slot to realize the transmission of the synaesthesia signal and the communication data in the downlink symbol, the uplink sensing echo data is received by separately allocating the sensing exclusive time-frequency domain resources in the flexible time slot, and the uplink communication transmission data is received in the uplink time slot; Distinguish uplink communication transmission data and uplink sensing echo data in the time domain.

7. According to the method of claim 1, the method for distinguishing the echo data of the uplink communication beam and the synaesthesia transmission beam received by the base station provides another time domain distinction method, specifically comprising: By distinguishing the reception time of uplink communication transmission data and uplink perception echo data, the uplink communication transmission data is received in the uplink time slot, and the uplink perception echo data is received by occupying the time-frequency domain resources of the protection band in the flexible time slot, so as to decode the communication data and perception data received at different times.

8. A wireless baseband processing device for integrating communication and perception to implement the method according to any one of claims 1 to 7, characterized in that: Includes the following modules: A coding mapping module, used to encode the original information bits to generate a data code stream, obtain the coding mapping result on each antenna port, and transmit the coding mapping result through a logical interface; A carrier modulation module, used for receiving the coding mapping result, modulating the coding mapping result to a carrier, obtaining a digital quantity of discrete time, and transmitting; A digital / analog conversion module, used to convert the carrier modulation result from the discrete time digital quantity into a continuously changing analog quantity, and then obtain a synaesthesia signal through orthogonal modulation; An up-conversion processing module, used for modulating the synaesthesia signal to the radio frequency end transmission frequency band to generate a baseband transmission signal; An ISAC beam management module is used to execute a beam management process, adjust the parameters of the basic unit of the multi-antenna array phase through a beamforming technology according to the beam established and maintained by the baseband transmission signal, adjust the beam shape and direction, and obtain a synaesthesia waveform; The base station transmits a synaesthesia integrated signal using multiple antennas according to the synaesthesia waveform; A down-conversion processing module is used to demodulate the received synaesthesia integrated signal into a baseband signal to obtain a down-conversion processing result; An analog / digital conversion module, used for converting the down-conversion processing result from an analog domain waveform into a digital domain waveform; A carrier demodulation module is used to convert a digital domain waveform into a demodulation output signal in a symbol format through Fourier transform to obtain a carrier demodulation result; A decoding and mapping module is used to receive the carrier demodulation result, process the obtained symbol format to generate a data code stream in a 0-1 bit format, and decode the data code stream to generate original bit information; The perception function module is used to process the perception signal of the analog / digital conversion result to obtain the perception data.

9. A computer device, characterized in that: It includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the wireless baseband processing method for realizing integrated communication perception as described in any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the wireless baseband processing method for realizing integrated communication and perception as described in any one of claims 1 to 7 is implemented.

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