Sensitivity reference signal configuration method and system and signal transmitter

Abstract

The invention discloses a method and a system for configuring a common inductance reference signal and a signal transmitter, and the method comprises the steps: generating two one-dimensional sequence sets, namely a first sequence set and a second sequence set; the first sequence set and the second sequence set both meet preset self-correlation and cross-correlation; generating a third sequence with a two-dimensional data structure according to the sequences in the first sequence set and the second sequence set; converting the third sequence to a time-frequency domain to obtain a fourth sequence; and configuring a corresponding reference signal according to the fourth sequence on a time-frequency resource unit of an antenna port. Based on the method, the perception capability of a communication system in a complex environment is improved, the signal processing complexity is reduced, and high-precision perception of the environment is realized while the communication performance is ensured.

Description

Inductive reference signal configuration method, system and signal transmitter Technical Field

[0001] This invention relates to the field of mobile communication technology, and in particular to a method, system and signal transmitter for configuring a sensing reference signal. Background Technology

[0002] With the rapid development of wireless communication technology, future communication systems not only need to meet traditional communication requirements such as high speed, low latency, and massive connectivity, but are also increasingly being endowed with the ability to achieve environmental perception. This integrated communication and perception system can perform target perception tasks similar to radar while using wireless communication signals for data transmission, thereby resolving the spectrum conflict problem between radar frequency bands and the ever-growing commercial communication frequency bands.

[0003] In existing mobile communication systems, Orthogonal Frequency Division Multiplexing (OFDM) waveforms have become the mainstream waveforms in 4G and 5G systems due to their advantages such as high spectral efficiency and strong multipath resistance, and are expected to continue to be used in B5G / 6G systems. OFDM waveforms provide a good foundation for the realization of integrated communication and sensing systems, especially by maximizing compatibility with OFDM waveforms through the reuse of existing reference signals.

[0004] Current integrated communication and sensing systems primarily achieve this by multiplexing the demodulation reference signal (DMRS) and channel state information reference signal (CSI-RS) from 5G communication systems. These reference signals are mostly generated based on Zadoff-Chu or Gold sequences. Placed in the frequency domain, these reference signals provide a low cubic metric after modulation to the time domain, reducing the impact of third-order nonlinear intermodulation interference from high-power amplifiers on the signal. The receiver estimates the channel in the time-frequency domain using the reference signals and converts the time-frequency channel into impulses in the time-delay-Doppler domain using a two-dimensional fast Fourier transform (2D-FFT). The target's distance and velocity can then be calculated based on the index of the peaks in the time-delay-Doppler domain.

[0005] However, existing DMRS and CSI-RS designs primarily prioritize communication performance over sensing performance. In multi-antenna-port scenarios, these signals rely on orthogonal cover codes (OCCs) in the time-frequency domain for differentiation. However, OCC designs assume that channels within the same group are coherent in the time-frequency domain, which conflicts with the need for precise capture of channel variations over time and frequency in sensing tasks. Furthermore, existing OCC schemes are unsuitable for channel processing using two-dimensional fast Fourier transforms (2D-FFTs), thus failing to meet the requirements of high-precision sensing.

[0006] Therefore, a new code division multiplexing scheme is needed to ensure that reference signals from different antenna ports can be transmitted simultaneously without sacrificing spectral efficiency, and to meet the sensing requirements for high-resolution delay-Doppler domain channel estimation. Summary of the Invention

[0007] The purpose of this invention is to provide a method, system, and signal transmitter for configuring a synsensory reference signal that effectively improves sensing performance and reduces the complexity of signal processing algorithms.

[0008] To achieve the above objectives, the present invention discloses a method for configuring a sensing reference signal, comprising:

[0009] Generate two one-dimensional sequence sets, namely the first sequence set and the second sequence set;

[0010] The first sequence set contains several first sequences with a length equal to the number of subcarriers;

[0011] The second sequence set contains several second sequences whose length is equal to the number of multi-carrier modulation symbols;

[0012] Both the first sequence set and the second sequence set satisfy preset autocorrelation and cross-correlation.

[0013] Generate a third sequence with a two-dimensional data structure based on the sequences in the first and second sequence sets.

[0014] The third sequence is transformed into the time-frequency domain to obtain the fourth sequence;

[0015] On the time-frequency resource unit of the antenna port, a corresponding reference signal is configured according to the fourth sequence.

[0016] Preferably, the product of the number of the first sequence and the number of the second sequence is greater than or equal to the number of antenna ports used for transmitting signals; the sequences in the first sequence set and the second sequence set are combined in pairs to generate a plurality of the third sequences; each of the third sequences is converted to the time-frequency domain to obtain a plurality of fourth sequences; each of the fourth sequences is assigned to one of the antenna ports.

[0017] Preferably, for the sequences in the first sequence set and the second sequence set, the following two conditions are satisfied so that the first sequence set and the second sequence set satisfy a preset autocorrelation and cross-correlation.

[0018] Condition 1: The periodic autocorrelation function of each sequence has an amplitude not exceeding ε within a region centered at the origin and with a radius of L;

[0019] Condition 2: The amplitude of the periodic cross-correlation function of any two sequences does not exceed ε within a region centered at the origin and with a radius of L;

[0020] L and ε are preset values ​​and can be adjusted.

[0021] Preferably, the third sequence is converted to the time-frequency domain using a fast Fourier transform or inverse Fourier transform.

[0022] Preferably, in each of the time-frequency resource units of the antenna port, the arrangement of the element values ​​in the fourth sequence includes any of the following:

[0023] They are arranged continuously in both the time and frequency domains;

[0024] Arranged continuously in the time domain and intermittently in the frequency domain;

[0025] They are arranged at intervals in the time domain and continuously in the frequency domain;

[0026] They are arranged at intervals in both the time domain and the frequency domain.

[0027] The present invention also provides a signal transmitter, the signal transmitter comprising:

[0028] A one-dimensional sequence generation module is used to generate two one-dimensional sequence sets, namely the first sequence set and the second sequence set.

[0029] The first sequence set contains several first sequences with a length equal to the number of subcarriers;

[0030] The second sequence set contains several second sequences whose length is equal to the number of multi-carrier modulation symbols;

[0031] Both the first sequence set and the second sequence set satisfy preset autocorrelation and cross-correlation.

[0032] A two-dimensional sequence generation module is used to generate a third sequence with a two-dimensional data structure based on the sequences in the first sequence set and the second sequence set.

[0033] A conversion module is used to convert the third sequence to the time-frequency domain to obtain a fourth sequence;

[0034] A reference signal configuration module is used to configure a corresponding reference signal on the time-frequency resource unit of the antenna port according to the fourth sequence;

[0035] A transmitting module, which is used to transmit communication data according to the reference signal.

[0036] Preferably, the product of the number of the first sequence and the number of the second sequence is greater than or equal to the number of antenna ports used for transmitting signals; the two-dimensional sequence generation module combines the sequences in the first sequence set and the second sequence set in pairs to generate a plurality of the third sequences; the conversion module converts each of the third sequences to the time-frequency domain to obtain a plurality of fourth sequences; and further includes an allocation module, which is used to allocate each of the fourth sequences to one of the antenna ports.

[0037] Preferably, for the sequences in the first sequence set and the second sequence set, the following two conditions are satisfied so that the first sequence set and the second sequence set satisfy a preset autocorrelation and cross-correlation.

[0038] Condition 1: The periodic autocorrelation function of each sequence has an amplitude not exceeding ε within a region centered at the origin and with a radius of L;

[0039] Condition 2: The amplitude of the periodic cross-correlation function of any two sequences does not exceed ε within a region centered at the origin and with a radius of L;

[0040] L and ε are preset values ​​and can be adjusted.

[0041] Preferably, the conversion module uses a fast Fourier transform or inverse transform to convert the third sequence to the time-frequency domain.

[0042] Preferably, in each of the time-frequency resource units of the antenna port, the arrangement of the element values ​​in the fourth sequence includes any of the following:

[0043] They are arranged continuously in both the time and frequency domains;

[0044] Arranged continuously in the time domain and intermittently in the frequency domain;

[0045] They are arranged at intervals in the time domain and continuously in the frequency domain;

[0046] They are arranged at intervals in both the time domain and the frequency domain.

[0047] The present invention also provides an integrated communication and sensing system, which includes a signal transmitter and a signal receiver, the signal receiver being as described above.

[0048] The present invention also provides a sensing reference signal configuration system, comprising:

[0049] One or more processors;

[0050] Memory;

[0051] And one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the programs including instructions for performing the inductive reference signal configuration method as described above.

[0052] The present invention also provides a computer-readable storage medium comprising a computer program that can be executed by a processor to perform the inductive reference signal configuration method as described above.

[0053] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the inductive reference signal configuration method as described above.

[0054] Compared with existing technologies, the sensing reference signal configuration method provided by the present invention generates reference signals by generating quasi-orthogonal first and second sequence sets, ensuring their autocorrelation and cross-correlation. It inherently possesses code division multiplexing characteristics, allowing sequences from multiple antenna ports to be directly superimposed without the need for OCC or other expansion methods, effectively reducing mutual interference between signals. It can generate independent reference signals on different antenna ports, thereby improving the resolution of the sensing channel and enhancing the sensing capability of communication systems in complex environments. Furthermore, by converting the two-dimensional sequences to the time-frequency domain for processing, firstly, it effectively reduces the complexity of signal processing; secondly, for the high-precision channel estimation required by sensing tasks, this scheme no longer relies on complex time-frequency domain channel change averaging processing, but directly uses quasi-orthogonal reference signal sets. This significantly simplifies the processing flow and is more suitable for sensing tasks in multi-user, multi-antenna, or multi-base station scenarios, enabling high-precision environmental sensing while ensuring communication performance. Attached Figure Description

[0055] Figure 1 is a flowchart of the implementation of the inductive reference signal configuration method in an embodiment of the present invention.

[0056] Figures 2a to 2d show different arrangements of the two-dimensional sequence used to generate the reference signal in the time-frequency domain in the embodiments of the present invention. Detailed Implementation

[0057] To illustrate the technical content, structural features, objectives, and effects of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0058] This embodiment discloses a method for configuring a sensing reference signal for an integrated communication and sensing system. By configuring a reference signal with both communication and sensing capabilities, an efficient combination of signal transmission and sensing capabilities can be achieved.

[0059] As shown in Figure 1, the method includes the following steps:

[0060] S1: Generate two one-dimensional sequence sets, namely the first sequence set and the second sequence set.

[0061] The first sequence set contains several first sequences with a length equal to the number of subcarriers;

[0062] The second sequence set contains several second sequences of a length equal to the number of multicarrier modulation symbols. In this embodiment, the multicarrier modulation symbols are preferably OFDM (Orthogonal Frequency Division Multiplexing) symbols.

[0063] Moreover, both the first sequence set and the second sequence set satisfy the preset autocorrelation and cross-correlation.

[0064] The product of the number of the first sequence and the number of the second sequence is greater than or equal to the number of antenna ports used for transmitting signals.

[0065] For example, the communication system to be configured has 8 antenna ports, 64 subcarriers, and 32 OFDM modulation symbols.

[0066] Therefore, the length of the first sequence is 64, and the length of the second sequence is 32.

[0067] In this embodiment, the first sequence set contains 4 first sequences, and the second sequence set contains 2 second sequences. Therefore, the product of the number of first sequences and the number of second sequences is 4 × 2 = 8, which is exactly equal to the number of antenna ports, ensuring that each antenna port can be allocated an independent reference signal.

[0068] S2: Combine the sequences in the first sequence set and the second sequence set in pairs to generate several third sequences with two-dimensional data structures.

[0069] Specifically, since the first and second sequence sets contain 4 and 2 sequences respectively, a total of 4×2=8 third sequences of two-dimensional data structures will be generated. The dimensions of each third sequence correspond to the time and frequency domains, which are 64×32 matrices in this case. Each third sequence is an independent signal pattern, used for subsequent configuration of reference signals.

[0070] S3: Transform each third sequence to the time-frequency domain to obtain several fourth sequences. Each fourth sequence corresponds to a specific antenna port and is a 64×32 matrix structure.

[0071] S4: Assign each fourth sequence to an antenna port.

[0072] For a system with eight antenna ports, eight fourth sequences are assigned to these eight antenna ports respectively. Each antenna port will use a different fourth sequence, ensuring the independence and non-interference between the antennas.

[0073] S5: Configure the corresponding reference signal on the time-frequency resource unit of each antenna port according to the element value in the fourth sequence.

[0074] Specifically, for each resource unit, a specific reference signal amplitude and phase are configured based on the element values ​​in the fourth sequence to ensure the accuracy and efficiency of communication and sensing. In this way, the reference signal can be used for both data communication and environmental sensing simultaneously, supporting the collaborative operation of communication and sensing.

[0075] On the other hand, the third sequence is transformed into the time-frequency domain using Fast Fourier Transform (2D-FFT) or inverse transform.

[0076] On the other hand, for the sequences in the first sequence set and the second sequence set, the following two conditions are satisfied so that the first sequence set and the second sequence set satisfy the preset autocorrelation and cross-correlation.

[0077] Condition 1: The periodic autocorrelation function of each sequence has an amplitude not exceeding ε within a region centered at the origin and with a radius of L (excluding the origin);

[0078] Condition 2: The amplitude of the periodic cross-correlation function of any two sequences does not exceed ε in a region centered at the origin with a radius of L (excluding the origin);

[0079] L and ε are preset values ​​and can be adjusted.

[0080] Specifically, in this embodiment, both the first sequence set and the second sequence set are Low Correlation Zone (LCZ) sequence sets, where LCZ is represented as...

[0081] The algorithm for generating LCZ is a conventional technique in this field and will not be elaborated further.

[0082] for It contains four parameters: N, Q, L, and ε. N is the length of each sequence in the sequence set, Q is the number of sequences in the sequence set, L is the radius of the low correlation interval, and ε is the low correlation value.

[0083] The length and number of sequences are determined by the amount of resources and ports in the expected time-frequency domain. L and ε are preset values ​​and can be optimized during implementation. It is desirable for L to be as large as possible and ε to be as small as possible.

[0084] therefore, The specific constraint formulas are as follows:

[0085]

[0086] in,(·) N This represents the operation of taking the remainder with respect to N, for example, (-N). N =0,(1-N) N =1,(2-N) N =2,…,(-1) N =N-1,(0) N =0,(1) N =1,…,(N-1) N =N-1,(N) N =0,(N+1) N =1,.... Superscript [·] * This indicates taking the conjugate of the elements. Represents a sequence set of length N The q-th sequence in the array, where q = 1, 2, ..., Q. Represents a sequence The k-th element, k is counted starting from 0, i.e., k = 0, 1, ..., N-1.

[0087] Based on this, if we want to allocate reference signals to an M×N resource grid (M subcarriers, N OFDM symbols) on Q0 antenna ports, given two positive integers Q... M and Q N Satisfying Q M ×Q N ≥Q0, and the parameter L of the sequence set. M L N ε M ε N For a one-dimensional sequence q M =1,…,Q M and q N =1,…,Q N Define the qth ∈ Q N (q M -1)+q N Two-dimensional sequence x (q) The element in the l-th row and k-th column is:

[0088]

[0089] in It is a sequence of length M, which is the set of LCZ sequences. The qth M A sequence, yes The l-th element; similarly, It is a sequence of length N, which is the set of LCZ sequences. The qth N A sequence, yes The k-th element. The sequences from the two LCZs are multiplied pairwise to form a co-Q. M ×Q N A two-dimensional sequence.

[0090] The generated sequence x above (q) ,q=1,…,Q M ×Q N Performing Fast Fourier Transform or its inverse transform along both dimensions yields the reference signal group. The q-th sequence X in (q) X (q) The element in the m-th row and n-th column can be represented by a 2D-FFT as:

[0091]

[0092] The following specific example will illustrate the process of generating the reference signal in detail.

[0093] An integrated sensing system employs OFDM modulation with a bandwidth of 20MHz and a subcarrier spacing of 15kHz. The system uses eight antenna ports and requires a sensing reference signal. The reference signal occupies 64 subcarriers and 32 OFDM symbols.

[0094] The reference signal generation process is as follows:

[0095] First, determine the parameters:

[0096] The number of subcarriers occupied by the reference signal is M = 64;

[0097] The number of OFDM symbols occupied by the reference signal is N = 32;

[0098] Number of antenna ports Q = 8;

[0099] Set Q M =4, Q N =2,L M =30, L N =14, ε M=ε N =0;

[0100] Generate a set of LCZ sequences of length M.

[0101] Generate a set of LCZ sequences of length N.

[0102] For example:

[0103]

[0104] Where 0, 1, 2 and 3 represent 1, j, -1 and -j respectively.

[0105] Combining two-dimensional sequences:

[0106] Based on the selected LCZ sequence set, eight two-dimensional sequences x are combined respectively. (q) [l,k],q=1,…,8.

[0107] The element value of each two-dimensional sequence is obtained by multiplying the element values ​​of the corresponding sequence in the LCZ sequence set.

[0108] It should be noted that the element values ​​in the LCZ sequence set may be complex numbers.

[0109] Next, perform a two-dimensional FFT transformation:

[0110] Perform a two-dimensional fast Fourier transform (2D-FFT) on each two-dimensional sequence.

[0111] We obtain eight two-dimensional sequences X in the time and frequency domains. (q) [m,n].

[0112] Then, assign a reference signal:

[0113] The resulting 8 two-dimensional sequences X (q) [m,n] are assigned to the 8 antenna ports.

[0114] Then, each two-dimensional sequence is arranged in the time-frequency domain, and the reference signal at the corresponding position is determined by the element values ​​of the two-dimensional sequence.

[0115] For example, the first two-dimensional sequence is assigned to the first antenna port, and the sequence is arranged in row-major order among the 64 subcarriers and 32 OFDM symbols in the time-frequency domain.

[0116] After generating the reference signal, the signal transmitter modulates the reference signal together with the OFDM data symbols using OFDM and then transmits it.

[0117] Additionally, in this embodiment, if only a reference signal for one antenna port needs to be configured, then Q is set...M =Q N =1,L M =32, L N =16, ε M =ε N =0. At this point, the properties of the sequence are very simple: while normalizing the energy of each sequence, the autocorrelation function of the sequence must be 0 when the offset δ≠0. In this embodiment, the CHU sequence is used to generate a one-dimensional sequence:

[0118]

[0119] at this time,

[0120] The two-dimensional sequence obtained after performing a two-dimensional fast Fourier transform is:

[0121]

[0122] In another preferred embodiment of the present invention, the arrangement of the element values ​​in the fourth sequence in the time-frequency resource unit of each antenna port includes any of the following:

[0123] As shown in Figure 2a, they are arranged continuously in both the time domain and the frequency domain;

[0124] As shown in Figure 2b, they are arranged continuously in the time domain and intermittently in the frequency domain;

[0125] As shown in Figure 2c, they are arranged at intervals in the time domain and continuously in the frequency domain;

[0126] As shown in Figure 2d, they are arranged at intervals in both the time domain and the frequency domain.

[0127] In summary, this invention discloses a method for configuring a sensing reference signal. Firstly, it improves the sensing accuracy of integrated communication and sensing systems. Specifically, by generating quasi-orthogonal first and second sequence sets and ensuring their autocorrelation and cross-correlation, mutual interference between signals is effectively reduced. In multi-antenna, multi-port, or multi-user scenarios, by rationally designing quasi-orthogonal reference signals, independent reference signals can be generated at different antenna ports, thereby improving the resolution of the sensing channel. Improved sensing channel resolution means that the distance and velocity of targets can be detected more accurately in the time-delay-Doppler domain. This helps improve the sensing capabilities of communication systems in complex environments.

[0128] Secondly, the complexity of signal processing is reduced. Specifically, the two-dimensional sequence is converted to the time-frequency domain before processing, and the 2D-FFT algorithm is used for fast channel estimation. This effectively reduces the complexity of signal processing. 2D-FFT is a mature, low-complexity algorithm that can quickly convert from the time-frequency domain to the time-delay-Doppler domain. Moreover, for the high-precision channel estimation required by sensing tasks, this scheme no longer relies on complex time-frequency domain channel change averaging processing, but directly uses a quasi-orthogonal reference signal set, which greatly simplifies the processing flow.

[0129] Compared with existing OCC-based schemes, the signal processing algorithm in this invention is simpler and more suitable for sensing tasks in multi-user, multi-antenna, or multi-base station scenarios, enabling high-precision environmental perception while ensuring communication performance.

[0130] In another preferred embodiment of the present invention, a signal transmitter is also disclosed for use in a communication and sensing integrated system. The signal transmitter includes a one-dimensional sequence generation module, a two-dimensional sequence generation module, a conversion module, an allocation module, and a transmission module.

[0131] The one-dimensional sequence generation module is used to generate two one-dimensional sequence sets, namely the first sequence set and the second sequence set.

[0132] The first sequence set contains several first sequences of length equal to the number of subcarriers.

[0133] The second sequence set contains several second sequences whose length is equal to the number of multicarrier modulation symbols.

[0134] Both the first sequence set and the second sequence set satisfy the preset autocorrelation and cross-correlation.

[0135] The product of the number of the first sequence and the number of the second sequence is greater than or equal to the number of antenna ports used for transmitting signals.

[0136] The two-dimensional sequence generation module is used to combine the sequences in the first sequence set and the second sequence set in pairs to generate several third sequences with two-dimensional data structures.

[0137] The conversion module is used to convert each third sequence to the time-frequency domain to obtain several fourth sequences.

[0138] The allocation module is used to assign each fourth sequence to an antenna port.

[0139] The reference signal configuration module is used to configure the corresponding reference signal on the time-frequency resource unit of each antenna port according to the element value in the fourth sequence.

[0140] The transmitting module is used to transmit communication data based on a reference signal.

[0141] On the other hand, the conversion module uses fast Fourier transform or inverse transform to convert the third sequence to the time-frequency domain.

[0142] For details on the working principle and process of the signal transmitter in this embodiment, please refer to the inductive reference signal configuration method in the above embodiments, which will not be repeated here.

[0143] In another preferred embodiment of the present invention, a communication and sensing integrated system is also disclosed, including a signal transmitter and a signal receiver, the system structure of which is detailed in the above embodiment.

[0144] This invention also discloses a sensing reference signal configuration system, comprising one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors. The programs include instructions for performing the sensing reference signal configuration method as described above. The processors may be general-purpose central processing units (CPUs), microprocessors, application-specific integrated circuits (ASICs), or one or more integrated circuits, used to execute relevant programs to implement the functions required by the modules in the sensing reference signal configuration system of this application embodiment, or to execute the sensing reference signal configuration method of this application method embodiment.

[0145] This invention also discloses a computer-readable storage medium comprising a computer program executable by a processor to perform the inductive reference signal configuration method described above. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center integrating one or more available media. The available medium can be read-only memory (ROM), random access memory (RAM), or magnetic media, such as floppy disks, hard disks, magnetic tapes, magnetic disks, or optical media, such as digital versatile discs (DVDs), or semiconductor media, such as solid-state disks (SSDs).

[0146] This application also discloses a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. The processor of an electronic device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the electronic device to perform the aforementioned sensing reference signal configuration method.

[0147] The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A method for configuring a sensing reference signal, characterized in that, include: Two one-dimensional sequence sets are generated, namely a first sequence set and a second sequence set; the first sequence set contains several first sequences with a length equal to the number of subcarriers; the second sequence set contains several second sequences with a length equal to the number of multicarrier modulation symbols; both the first sequence set and the second sequence set satisfy preset autocorrelation and cross-correlation. Generate a third sequence with a two-dimensional data structure based on the sequences in the first and second sequence sets. The third sequence is converted to the time-frequency domain to obtain the fourth sequence; on the time-frequency resource unit of the antenna port, the corresponding reference signal is configured according to the fourth sequence.

2. The method for configuring a sensing reference signal according to claim 1, characterized in that, The product of the number of the first sequence and the number of the second sequence is greater than or equal to the number of antenna ports used for transmitting signals; the sequences in the first sequence set and the second sequence set are combined in pairs to generate several third sequences; Each of the third sequences is converted to the time-frequency domain to obtain several fourth sequences; each of the fourth sequences is assigned to one of the antenna ports.

3. The method for configuring a sensing reference signal according to claim 1, characterized in that, For the sequences in the first sequence set and the second sequence set, the following two conditions are satisfied so that the first sequence set and the second sequence set satisfy the preset autocorrelation and cross-correlation. Condition 1: The periodic autocorrelation function of each sequence does not exceed ε in a region centered at the origin with a radius of L; Condition 2: The periodic cross-correlation function of any two sequences does not exceed ε in a region centered at the origin with a radius of L; where L and ε are preset values ​​and can be adjusted.

4. The method for configuring a sensing reference signal according to claim 1, characterized in that, The third sequence is converted to the time-frequency domain using a fast Fourier transform or inverse Fourier transform.

5. The method for configuring a sensing reference signal according to claim 1, characterized in that, On the time-frequency resource unit of the antenna port, the arrangement of the element values ​​in the fourth sequence includes any of the following: continuous arrangement in both the time and frequency domains; continuous arrangement in the time domain and intermittent arrangement in the frequency domain; intermittent arrangement in the time domain and continuous arrangement in the frequency domain; and intermittent arrangement in both the time and frequency domains.

6. A signal transmitter, characterized in that, include: A one-dimensional sequence generation module is used to generate two one-dimensional sequence sets, namely a first sequence set and a second sequence set; the first sequence set contains several first sequences with a length equal to the number of subcarriers; the second sequence set contains several second sequences with a length equal to the number of multicarrier modulation symbols; both the first sequence set and the second sequence set satisfy preset autocorrelation and cross-correlation. A two-dimensional sequence generation module is used to generate a third sequence with a two-dimensional data structure based on sequences in a first sequence set and a second sequence set; a conversion module is used to convert the third sequence to the time-frequency domain to obtain a fourth sequence; a reference signal configuration module is used to configure a corresponding reference signal on the time-frequency resource unit of the antenna port according to the fourth sequence; and a transmission module is used to transmit communication data according to the reference signal.

7. The signal transmitter according to claim 6, characterized in that, The product of the number of the first sequence and the number of the second sequence is greater than or equal to the number of antenna ports used for transmitting signals; the two-dimensional sequence generation module combines the sequences in the first sequence set and the second sequence set in pairs to generate several third sequences; the conversion module converts each third sequence to the time-frequency domain to obtain several fourth sequences; and an allocation module is also included, which is used to allocate each fourth sequence to one of the antenna ports.

8. The signal transmitter according to claim 6, characterized in that, For the sequences in the first sequence set and the second sequence set, the following two conditions are satisfied so that the first sequence set and the second sequence set satisfy the preset autocorrelation and cross-correlation. Condition 1: The periodic autocorrelation function of each sequence does not exceed ε in a region centered at the origin with a radius of L; Condition 2: The periodic cross-correlation function of any two sequences does not exceed ε in a region centered at the origin with a radius of L; where L and ε are preset values ​​and can be adjusted.

9. The signal transmitter according to claim 6, characterized in that, The conversion module uses Fast Fourier Transform or Inverse Transform to convert the third sequence to the time-frequency domain.

10. The signal transmitter according to claim 6, characterized in that, In each of the time-frequency resource units of the antenna port, the arrangement of the element values ​​in the fourth sequence includes any of the following: continuous arrangement in both the time and frequency domains; continuous arrangement in the time domain and intermittent arrangement in the frequency domain; intermittent arrangement in the time domain and continuous arrangement in the frequency domain; and intermittent arrangement in both the time and frequency domains.

11. An integrated communication and sensing system, characterized in that, It includes a signal transmitter and a signal receiver, the signal receiver being as described in any one of claims 6 to 10.

12. A sensing reference signal configuration system, characterized in that, include: One or more processors; Memory; And one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the programs including instructions for performing the inductive reference signal configuration method as described in any one of claims 1 to 5.

13. A computer-readable storage medium, characterized in that, Includes a computer program that can be executed by a processor to perform the inductive reference signal configuration method as described in any one of claims 1 to 5.

14. A computer program product comprising a computer program that, when executed by a processor, implements the inductive reference signal configuration method according to any one of claims 1 to 5.

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