Wireless signal configuration method, storage medium, and electronic device

Abstract

This invention provides a wireless signal configuration method, storage medium, and electronic device. The method includes: configuring a wireless signal, the wireless signal comprising a cyclic prefix portion and a valid signal portion, wherein the valid signal portion comprises N segments of equal length in the time domain, the phase difference between adjacent valid signal segments is determined according to a set frequency domain combing offset K value such that the wireless signal, after transformation to the frequency domain, is an N-combed signal, the valid signal portion occupies the Kth comb, and N and K are integers greater than or equal to 1; and transmitting the wireless signal in a sensing integrated device. This invention solves the problem that existing signal design schemes cannot effectively suppress interference generated by networking, and also improves the anti-interference capability of networking.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of communications, and more specifically, to a signal wireless signal configuration method, a storage medium, and an electronic device. Background Technology

[0002] In a sensing-integrated system, measures to increase sensing range include increasing wireless signal power, rationally designing the sensing-integrated signal waveform, and increasing antenna gain. However, in some cases, to reduce hardware and software costs, wireless signal power and antenna gain are limited. Furthermore, to avoid interference from the sensing-integrated system to satellites and other equipment, the transmit power of certain frequency bands is also restricted. Therefore, rationally designing the sensing-integrated signal waveform is one of the few solutions to increase sensing range, such as increasing the time-domain utilization of the sensing-integrated signal waveform and reducing its peak-to-average power ratio (PAPR).

[0003] The integrated sensing system has the characteristic of using communication base stations to form a network, but interference between multiple base stations can seriously affect the sensing network performance. Existing signal design schemes cannot effectively suppress the interference generated by the network, or although they can improve the anti-interference capability of the network, they will deteriorate the sensing distance resolution and distance accuracy. Summary of the Invention

[0004] This invention provides a wireless signal configuration method, storage medium, and electronic device to at least solve the problem that existing signal design schemes in related technologies cannot effectively suppress interference generated by networking.

[0005] According to an embodiment of the present invention, a wireless signal configuration method is provided, applied to a sensing integrated device, comprising: configuring a wireless signal, the wireless signal including a cyclic prefix portion and an effective signal portion, wherein the effective signal portion includes N segments of unit effective signals of equal length in the time domain, the phase difference between adjacent unit effective signals is determined according to a set frequency domain comb offset K value such that the wireless signal is an N-combed signal after transformation to the frequency domain, the effective signal portion occupies the Kth comb, and N and K are integers greater than or equal to 1; and transmitting the wireless signal in the sensing integrated device.

[0006] According to yet another embodiment of the present invention, a computer-readable storage medium is also provided, wherein a computer program is stored therein, wherein the computer program is configured to perform the steps in any of the above method embodiments when executed.

[0007] According to yet another embodiment of the present invention, an electronic device is also provided, including a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

[0008] According to yet another embodiment of the present invention, a computer program product is also provided, comprising a computer program that, when executed by a processor, implements the steps in any of the above method embodiments.

[0009] Through the above embodiments of the present invention, since multiple effective unit signals are set in the time domain and the phase difference between each effective unit signal is determined by the frequency domain combing offset K value, the signal determined based on this waveform design can enable the wireless signal waveforms of multiple integrated sensing devices in the integrated sensing system to form combing characteristics in the frequency domain, thereby quickly knowing the interference between each integrated sensing device in the network. Therefore, it can solve the problem that existing signal design schemes cannot effectively suppress the interference generated by the network, and can also achieve the effect of improving the anti-interference capability of the network. Attached Figure Description

[0010] Figure 1 This is a hardware structure block diagram of the network device used in the embodiments of the method of the present invention;

[0011] Figure 2 This is a schematic diagram of the network architecture of a sensor-integrated system according to an embodiment of the present invention;

[0012] Figure 3 This is a flowchart of a wireless signal configuration method according to an embodiment of the present invention;

[0013] Figure 4 This is a schematic diagram of the integrated sensing signal in the time domain according to an embodiment of the present invention;

[0014] Figure 5 This is a schematic diagram of a wireless signal in the frequency domain according to an embodiment of the present invention;

[0015] Figure 6 This is a schematic diagram of the time-domain frame structure alignment of the integrated sensing signal and the communication signal according to an embodiment of the present invention;

[0016] Figure 7 This is a schematic diagram illustrating combing achieved by configuring the center frequency point of the sensing according to an embodiment of the present invention;

[0017] Figure 8 This is a schematic diagram of the integrated sensing signal in the time domain when the maximum sensing delay is 1 / 4 OFDM symbol according to an embodiment of the present invention.

[0018] Figure 9 This is a schematic diagram in the time domain of the integrated sensing signal when the maximum sensing delay is 1 / 2 OFDM symbol according to an embodiment of the present invention:

[0019] Figure 10This is a schematic diagram of the integrated sensing signal in the time domain when the maximum sensing delay is 1 OFDM symbol according to an embodiment of the present invention;

[0020] Figure 11 This is a schematic diagram in the time domain of the sensing integrated signal when the sensing integrated signal is used only for communication according to an embodiment of the present invention. Detailed Implementation

[0021] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0023] The methods and embodiments provided in this application can be executed in network devices or other computing devices. Taking running on a network device as an example, Figure 1 This is a hardware structure block diagram of the network device used in the embodiments of the method of the present invention. For example... Figure 1 As shown, a network device may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The network device may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the network device described above. For example, the network device may also include components that are more complex than those described above. Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0024] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the wireless signal configuration method in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to network devices via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0025] The transmission device 106 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider for the network device. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 106 may be a Radio Frequency (RF) module used for wireless communication with the Internet.

[0026] Integrated sensing systems leverage the networking capabilities of communication base stations and possess the potential for continuous sensing coverage. However, interference between multiple base stations can severely impact the performance of the sensing network. Frequency division or combing design of the integrated sensing signals can improve the network's anti-interference capability. However, frequency division reduces the effective bandwidth of individual integrated sensing devices and degrades the resolution and accuracy of sensing distance. Combing is a feasible solution that suppresses interference without reducing resolution.

[0027] This invention provides a sensing-integrated system, which includes, but is not limited to: a sensing-integrated device, a pure communication device, and a sensing target. Figure 2 This is a schematic diagram of the network architecture of a sensor-integrated system according to an embodiment of the present invention, such as... Figure 2 As shown, in this integrated sensing system, a base station represents an integrated sensing device, a terminal represents a pure communication device, and a drone represents a sensing target.

[0028] The functions and features of each module are as follows:

[0029] The transmitting end of the integrated sensing device transmits the designed integrated sensing signal, and the frequency domain combing offset K value (k) configured at the transmitting ends of multiple integrated sensing devices at the same time. comb_offset The difference is that the purpose is to suppress interference.

[0030] Pure communication equipment, used for communication services with integrated sensing devices, as well as for transmitting data streams.

[0031] The target is used to reflect the wireless signal of the integrated sensing device. The reflected signal is received by the receiver of the integrated sensing device and processed for sensing to realize the sensing function.

[0032] This invention proposes a waveform design method for integrated communication and sensing, which designs the waveform of the wireless signal transmitted by the transmitting end of an integrated communication and sensing device. The integrated communication and sensing waveform designed by this method has higher time domain utilization, can improve coverage distance, and the transmitted waveforms of multiple integrated communication and sensing devices can form a comb-like characteristic to suppress interference generated by networking.

[0033] This embodiment provides a signal determination method for operating on the aforementioned network device or integrated sensing system. This method is applied to a target integrated sensing device. Figure 3 This is a flowchart of a wireless signal configuration method according to an embodiment of the present invention, such as... Figure 3 As shown, the process includes the following steps:

[0034] Step S302: Configure the wireless signal. The wireless signal includes a cyclic prefix part and a valid signal part. The valid signal part includes N segments of unit valid signals of equal length in the time domain. The phase difference between adjacent unit valid signals is determined according to the set frequency domain comb offset K value so that the wireless signal is an N-combed signal after being transformed to the frequency domain. The valid signal part occupies the Kth comb. N and K are integers greater than or equal to 1. Transmit the wireless signal in the integrated sensing device.

[0035] In step S302 of this embodiment, configuring the wireless signal includes: determining the length of the unit effective signal in the time domain, the number of unit effective signals, the cyclic prefix length, and the frequency domain combing offset K value corresponding to the target sensing device, based on the current application scenario; wherein, the target sensing device is the device in the sensing system that is currently determining the wireless signal.

[0036] In this embodiment, the target sensing integrated device needs to determine the signal to be transmitted according to the signal determination method of the present invention, wherein the time length occupied by each signal to be transmitted is T. cp +T isac , among which, T cp T represents the length of the cyclic prefix (CP) of the signal to be transmitted. The CP can be located before or after the signal to be transmitted. isac The effective length of the signal to be transmitted, excluding the CP, i.e., the effective signal, is used for information transmission and / or sensing; the effective time-domain utilization rate of the signal to be transmitted is T. isac / (T cp +T isac The higher the time domain utilization, the longer the effective length of reception and the farther the sensing distance.

[0037] In one embodiment, the signal to be transmitted can be a combined sensing signal or a purely sensing signal.

[0038] Figure 4 This is a schematic diagram of the integrated sensing signal in the time domain according to an embodiment of the present invention, as shown below. Figure 4 As shown, the integrated inductive signal (i.e., the inductive signal) includes T cp T isac Two parts, and T isac It is evenly divided into N segments.

[0039] In this embodiment, a unit valid signal is defined as a segment of time-domain signal divided into N segments, with each segment being a unit valid signal.

[0040] In this embodiment, the current application scenario can be one of the following: communication-only scenario, perception-only scenario, or communication-perception scenario.

[0041] In step S302 of this embodiment, determining the length of the unit effective signal in the time domain according to the current application scenario includes: multiplying the unit duration of the Orthogonal Frequency Division Multiplexing (OFDM) symbol corresponding to the current application scenario by a preset multiple, and determining the first multiplication result as the length of the unit effective signal. The preset multiple is a power of 2, which is used to ensure that the unit effective signal is a power of 2 after sampling. For example, the value of the preset multiple can be 1 / 8, 1 / 4, 1 / 2, 1, 2, etc.

[0042] In one exemplary embodiment, the length of each unit of valid signal is represented as T. isac，i =T isac / N, and T isac，i =T isac / N=k·T ofdm Where k is a preset multiple, T ofdm The unit duration of the OFDM symbol;

[0043] Multiple valid signals are represented as S isac，0 S isac，1 S isac，N-1 ,in,

[0044] S isac，i =S isac，j ·(j2πk comb_offset (ij) / N),

[0045] N is a positive integer, i and j are integers whose values ​​range from 0 to N-1, and k is a positive integer. comb_offset It is an integer and mod(k) comb_offset ,N)=0,1,2,...,N-1.

[0046] Figure 5 This is a schematic diagram of a wireless signal in the frequency domain according to an embodiment of the present invention, such as... Figure 5 As shown, this includes wireless signals corresponding to multiple integrated sensing devices, with each wireless signal corresponding to a different k. comb_offset , respectively k comb_offset =0, k comb_offset =1, k comb_offset =2, k comb_offset=3, depending on the different k settings comb_offset Therefore, the effective subcarriers of each wireless signal complement and overlap, thereby effectively suppressing interference generated by the network.

[0047] In one embodiment, when the current application scenario is a sensing-only scenario or a communication-sensing scenario, the first multiplication result is greater than or equal to the maximum sensing latency corresponding to the current application scenario.

[0048] In an exemplary embodiment, if the maximum sensing delay required by the integrated sensing system is τ max Then T isac，i =T isac / N=k·T ofdm ≥τ max .

[0049] In one embodiment, if the sampling frequency of the target sensing device is fs, T isac *fs or T isac *fs / N is preferably set to a power of 2 to facilitate processing at the transmitting and receiving ends via FFT / IFFT, for example, T isac The length of / N is preferably set to 1 / 8, 1 / 4, 1 / 2, 1, or 2 OFDM symbols (excluding CP).

[0050] In one embodiment, determining the number of effective unit signals of the integrated sensing signal based on the current application scenario includes: determining the number of effective unit signals based on the co-channel interference between multiple integrated sensing devices in the current application scenario, as well as the scanning cycle, sensing distance, and sensing speed of the target integrated sensing device; wherein, the target integrated sensing device is the device currently determining the wireless signal.

[0051] The more severe the co-channel interference, the longer the acceptable scanning period, and the smaller the maximum sensing speed, the larger the value of N should be configured, such as 3, 7, 11, or 16.

[0052] In step S302 of this embodiment, when the current application scenario is a sensing-only scenario or a communication sensing scenario, the cyclic prefix length is determined according to the current application scenario, including: determining the cyclic prefix length according to the maximum sensing latency corresponding to the current application scenario, wherein the value of the cyclic prefix length is greater than or equal to the value of the maximum sensing latency.

[0053] In an exemplary embodiment, if the maximum sensing delay required by the integrated sensing system is τ max Then the length of the cyclic prefix of the transmitted signal must satisfy: T cp ≥τ max .

[0054] In step S302 of this embodiment, when the current application scenario is a communication-only scenario, the cyclic prefix length is greater than or equal to the predefined standard cyclic prefix length for communication.

[0055] OFDM signals require a CP (Concurrent Carrier) to ensure orthogonality between subcarriers and avoid inter-symbol interference (ISI) and inter-carrier interference (ICI). This CP is the standard CP (T). 标准cp Generally, the standard CP length is required to be greater than or equal to the latency width between the communication and the terminal (the difference between the maximum latency and the minimum latency).

[0056] The standard cyclic prefix length is defined by the protocol. This standard cyclic prefix length is set according to different communication requirements and technical standards to ensure stable data transmission and reduce interference.

[0057] In one embodiment, in addition to satisfying T cp ≥τ max Or T cp ≥T 标准cp In addition, the integrated inductive signal needs to occupy an integer multiple of OFDM symbols to align the integrated inductive signal and the communication signal in the frame structure.

[0058] Figure 6 This is a schematic diagram illustrating the time-domain frame structure alignment of the integrated sensing signal and the communication signal according to an embodiment of the present invention, as shown below. Figure 6 As shown, in either a sensing-only scenario or a communication-sensing scenario, the CP of the integrated sensing signal 1 only satisfies T. cp ≥τ max However, the integrated inductive signal does not occupy an integer multiple of OFDM symbols, resulting in misalignment of the inductive and communication frame structures and symbols.

[0059] For methods to achieve alignment, please refer to Figure 4 The inductive integrated signal 2 and inductive integrated signal 3 are in the context of the signal. The CP of inductive integrated signal 2 satisfies T. cp ≥τ max Furthermore, by using a blank transmission front-end, the integrated inductive signal occupies an integer multiple of OFDM symbols; the integrated inductive signal 3 satisfies T... cp ≥τ max In this case, the CP length was further increased to meet the requirement that the integrated inductive signal occupies an integer multiple of OFDM symbols.

[0060] In a network, a maximum of N comb divisions can be supported for multiple integrated sensing devices. This means that at most N integrated sensing devices can be identified in the network, with each device assigned an independent frequency comb (N comb divisions). For integrated sensing devices experiencing severe interference, different frequency domain comb offset values ​​K need to be configured, i.e., k... comb_offset Value, where k comb_offset The value of can be 0, 1, 2, ..., N-1.

[0061] In step S302 of this embodiment, determining the frequency domain combing offset K value corresponding to the target integrated sensing device in the current application scenario includes: determining the number of frequency domain combing offset K values ​​corresponding to the current application scenario based on the number of integrated sensing devices in the current application scenario; determining multiple different frequency domain combing offset K values ​​corresponding to the current application scenario based on the number of frequency domain combing offset K values; and determining the frequency domain combing offset K value corresponding to the target integrated sensing device from the multiple different frequency domain combing offset K values.

[0062] In one exemplary embodiment, for a length of T isac The integrated inductive signal is transformed into the frequency domain, which is an N-comb signal, with the effective signal occupying the k-th position. comb_offset Each comb, such as Figure 5 As shown in the figure, taking N=4 as an example, k is selected respectively. comb_offset = 0, 1, 2, 3, a total of 4 cases, when the k of the synesthetic signal comb_offset When the values ​​are not equal, interference can be effectively avoided.

[0063] Different k comb_offset The value can also be achieved by configuring different sensing center frequencies, so that the transmit and receive signals between different integrated sensing devices are separated when viewed at the same frequency.

[0064] Figure 7 This is a schematic diagram illustrating combing achieved by configuring the center frequency point of the sensing according to an embodiment of the present invention, as shown below. Figure 7 As shown, k comb_offset All are set to zero, but the sensing center frequency points of the wireless signals of different integrated sensing devices are different, namely: f c =f0, f c =f0+Δf、f c =f0+2Δf、f c =f0 + 3Δf. Thus, at the same frequency, the transmit and receive signals between different integrated sensing devices are also separated.

[0065] In one embodiment, determining multiple different frequency domain comb offset K values ​​corresponding to the current application scenario based on the number of frequency domain comb offset K values ​​includes: setting a corresponding number of sensing center frequency points based on the number of frequency domain comb offset K values; and determining multiple different frequency domain comb offset K values ​​based on the corresponding number of sensing center frequency points.

[0066] In one embodiment, different sensing devices in a sensing system may also employ different master code sequences to further suppress mutual interference between sensing devices; wherein, the master code sequence includes, but is not limited to, ZC, PN, and chirp sequences.

[0067] After step S302 in the embodiment, the method further includes: determining the phase difference between each unit effective signal based on the frequency domain comb offset K value.

[0068] For example, as in the above embodiment S isac，i =S isac，j ·(j2πk comb_offset (ij) / N), where j2πk comb_offset (ij) / N is identified as the phase difference.

[0069] After step S302 in the embodiment, the method further includes: determining the wireless signal based on the length of the unit effective signal, the number of unit effective signals, the phase difference between each unit effective signal, and the cyclic prefix length.

[0070] The wireless signal determined through the above steps can be considered as consisting of two segments. The CP segment in the first segment ensures the orthogonality between the received signal subcarriers, thus making it suitable for OFDM communication systems and guaranteeing the SNR, resolution, false alarm rate, and missed alarm rate in sensing processing. The second segment of the wireless signal consists of N equal-length time-domain signals S. isac，0 S isac，1 S isac，N-1 These N signal segments, except for a phase difference j2πk comb_offset Apart from the difference in (ij) / N, the rest of the parts are exactly the same, S isac，i Sampling lengths should ideally be powers of 2 for ease of engineering implementation (e.g., to facilitate the use of FFT / IFFT). While powers other than 2 also satisfy the requirements for synesthesia, their engineering implementation complexity is higher. isac Configure different When the value is used, it can form a code division in the time domain. After the entire value is transformed to the frequency domain, it only occupies the k-th frequency domain. comb_offset Each comb is individually designed to suppress interference through combing.

[0071] Step S304: The wireless signal is transmitted in the integrated sensing device.

[0072] In one embodiment: the integrated sensing device transmits configured wireless signals to a pure communication device and / or a sensing target.

[0073] In one embodiment, after sending a determined wireless signal to a sensing target, the method includes: receiving a signal reflected back from the sensing target, and performing communication-related processing according to the aforementioned configuration parameters to obtain communication information. The aforementioned configuration parameters include the length and quantity of a unit effective signal, the cyclic prefix length, and the phase difference or frequency domain comb offset K value between unit effective signals.

[0074] In one exemplary embodiment, the receiving end of the integrated sensing device receives the integrated sensing signal reflected from the sensing target, performs sensing processing, and acquires sensing information. Here, the sensing target refers to any object being sensed, including but not limited to drones, pedestrians, vehicles, birds, boats, balloons, the environment, and breathing / heartbeats.

[0075] In one embodiment, after receiving a wireless signal, the pure communication device can process it according to the OFDM signal processing method to obtain communication information; it can also demodulate the wireless signal according to the obtained configuration parameters, wherein the configuration parameters are the same as the configuration parameters determined in the integrated sensing device, including the length and quantity of unit effective signals, the cyclic prefix length, and the phase difference or frequency domain combing offset K value between unit effective signals.

[0076] The above embodiments of the present invention are applied to waveform design in the integrated sensing and communication scenario. They replace the traditional OFDM waveform in the communication system. The designed new waveform can be used for both communication and sensing at the same time, or for communication or sensing alone. The designed waveform has good coverage performance under low power conditions and good interference suppression capability under networking conditions.

[0077] To facilitate understanding of the technical solutions provided by this invention, detailed descriptions will be given below in conjunction with specific scenario embodiments.

[0078] Scenario Example 1: Both communication and sensing are involved, with the maximum sensing delay τ max It is 1 / 4 of an OFDM symbol.

[0079] In this scenario embodiment, the base station is an integrated sensing and communication device, T ofdm =8.33us, supporting near-field sensing. The specific process of determining the signal includes the following steps:

[0080] Step S801: Obtain the configuration parameters of the integrated inductive waveform.

[0081] Step S8011: Determine the length T of each segment after the integrated inductive signal is segmented. isac，i .

[0082] Assuming the integrated sensing device is a self-transmitting and self-receiving system, the maximum required sensing delay τ is... max = 2us (corresponding to a maximum sensing distance of 300m), T isac，i T needs to be satisfied isac，i =T isac / N=k·T ofdm ≥τ max Since the candidate values ​​of k are 1 / 8, 1 / 4, 1 / 2, 1, 2, etc., any one of these values ​​can be selected as k in this embodiment. For example, if the minimum value of k is 1 / 4, then T isac，i =T ofdm / 4.

[0083] In step S8012, the value of N is determined based on the co-channel interference between base stations in the integrated sensing system, the scanning cycle (refresh rate), sensing distance, sensing speed, and other requirements of the target integrated sensing device.

[0084] Generally, the more severe the co-channel interference, the longer the acceptable scan period, and the lower the maximum sensing speed, the larger the N value can be configured. For example, N can be 3, 7, 11, or 16.

[0085] Step S8013, determine the length T of CP. cp , making T cp Satisfy T cp ≥τ max .

[0086] To ensure that the integrated inductive signal occupies an integer multiple of OFDM symbols, thus aligning the integrated inductive signal and the communication signal in the frame structure, when N is 3, 7, 11, or 16, adding CP will occupy 1, 2, 3, or 4 OFDM symbols respectively.

[0087] Figure 8 This is a schematic diagram in the time domain of the integrated sensing signal when the maximum sensing delay is 1 / 4 OFDM symbol according to an embodiment of the present invention. Figure 8 The diagram illustrates the distribution of the integrated sensing signal in the time domain when N is 3, 7, 11, or 16.

[0088] Step S8014: Configure each integrated sensing device value.

[0089] Under network conditions, the integrated sensing system can support up to N-splitting of multiple integrated sensing devices. Integrated sensing devices experiencing severe interference require different k-splitting configurations. comb_offset Value, where k comb_offset The selectable values ​​are 0, 1, 2, ..., N-1. Different integrated sensing devices can also use different master code sequences (including but not limited to ZC, PN, chirp sequences, etc.). Different kcomb_offset The value can also be achieved by configuring different sensing center frequencies, so that the transmit and receive signals between different sensing devices are combed when viewed at the same frequency. That is, under networking conditions, different sensing devices can be configured with the same center frequency but different combed signals at the same time, and the combing of different sensing devices can also be equivalently achieved by configuring different center frequencies.

[0090] In step S802, the terminal obtains the configuration parameters of the integrated sensing signal, thereby enabling the terminal to effectively demodulate the integrated sensing signal.

[0091] In step S803, the base station transmits an integrated sensing signal according to the configuration parameters.

[0092] Suppose that the offset of the comb configured at a certain base station at this moment is k. comb_offset Then, the time-domain signal of the base station, excluding the CP, is divided into N equal segments of length T. isac The time-domain signals of / N are represented as S isac，0 S isac，1 S isac，N-1 , where i and j are integers whose values ​​range from 0 to N-1.

[0093] In step S804, the terminal receives the integrated sensing signal, processes it according to the traditional OFDM waveform processing method, and obtains communication information after performing communication-related processing based on the configuration parameters.

[0094] Step S805: The base station receives the integrated sensing signal reflected from the sensing target, performs sensing processing according to the configuration parameters, and then obtains sensing information.

[0095] Through the above steps, by setting multiple effective unit signals in the time domain and determining the phase difference between each effective unit signal through the frequency domain combing offset K value, the signal determined based on this waveform design can enable the wireless signal waveforms of multiple integrated sensing devices in the integrated sensing system to form combing characteristics in the frequency domain. This quickly reveals the interference between integrated sensing devices in the network. Therefore, it can simultaneously solve the problem that existing signal design schemes cannot effectively suppress interference generated by the network, and also achieve the effect of improving the anti-interference capability of the network.

[0096] Example 2: Combining communication and sensing, with a maximum sensing delay τ max It is 1 / 2 OFDM symbol.

[0097] In this scenario embodiment, the base station is an integrated sensing and communication device, T ofdm =8.33us, supporting mid-range sensing. The specific process of determining the signal includes the following steps:

[0098] Step S901: Obtain the configuration parameters of the integrated inductive waveform.

[0099] Step S9011: Determine the length T of each segment after the integrated inductive signal is segmented. isac，i .

[0100] Assuming the integrated sensing device is a self-transmitting and self-receiving system, the maximum required sensing delay τ is... max = 4us (corresponding to a maximum sensing distance of 600m), T isac，i T needs to be satisfied isac，i =T isac / N=k·T ofdm ≥τ max Since the candidate values ​​of k are 1 / 8, 1 / 4, 1 / 2, 1, 2, etc., any one of these values ​​can be selected as k in this embodiment. For example, if the minimum value of k is 1 / 2, then T isac，i =T ofdm / 2.

[0101] Step S9012: Determine the value of N based on the co-channel interference between base stations in the integrated sensing system, the scanning cycle (refresh rate) of the target integrated sensing device, the sensing distance of the target integrated sensing device, the sensing speed, and other requirements.

[0102] Generally, the more severe the co-channel interference, the longer the acceptable scan period, and the lower the maximum sensing speed, the larger the N value can be configured. For example, N can be 1, 3, 5, or 7.

[0103] Step S9013, determine the length T of CP. cp , making T cp Satisfy T cp ≥τ max .

[0104] To ensure that the integrated inductive signal occupies an integer multiple of OFDM symbols, thus aligning the integrated inductive signal and the communication signal in the frame structure, when N is 1, 3, 5, or 7, adding CP will occupy 1, 2, 3, or 4 OFDM symbols respectively.

[0105] Figure 9 This is a schematic diagram in the time domain of the integrated sensing signal when the maximum sensing delay is 1 / 2 OFDM symbol according to an embodiment of the present invention. Figure 9 The diagram illustrates the distribution of the integrated sensing signal in the time domain when N is 1, 3, 5, or 7.

[0106] Step S9014: Configure k for each integrated sensing device. comb_offset value.

[0107] Under network conditions, the integrated sensing system can support up to N-splitting of multiple integrated sensing devices. Integrated sensing devices experiencing severe interference require different k-splitting configurations. comb_offset Value, where k comb_offset The selectable values ​​are 0, 1, 2, ..., N-1. Different integrated sensing devices can also use different master code sequences (including but not limited to ZC, PN, chirp sequences, etc.). Different k... comb_offset The value can also be achieved by configuring different sensing center frequencies, so that the transmit and receive signals between different sensing devices are combed when viewed at the same frequency. That is, under networking conditions, different sensing devices can be configured with the same center frequency but different combed signals at the same time, and the combing of different sensing devices can also be equivalently achieved by configuring different center frequencies.

[0108] In step S902, the terminal obtains the configuration parameters of the integrated sensing signal, thereby enabling the terminal to effectively demodulate the integrated sensing signal.

[0109] In step S903, the base station transmits an integrated sensing signal according to the configuration parameters.

[0110] Suppose that the offset of the comb configured at a certain base station at this moment is k. comb_offset Then, the time-domain signal of the base station's wireless signal, excluding the CP, is divided into N equal segments of length T. isac The time-domain signals of / N are represented as S isac，0 S isac，1 S isac，N-1 , where i and j are integers whose values ​​range from 0 to N-1.

[0111] In step S904, the terminal receives the integrated sensing signal, processes it according to the traditional OFDM waveform processing method, and obtains communication information after performing communication-related processing based on the configuration parameters.

[0112] In step S905, the base station receives the integrated sensing signal reflected from the sensing target, performs sensing processing according to the configuration parameters, and then obtains sensing information.

[0113] Example 3: Combining communication and sensing, with a maximum sensing delay τ max One OFDM symbol

[0114] In this scenario embodiment, the base station is an integrated sensing and communication device, T ofdm =8.33us, supporting long-distance sensing. The specific signal determination process includes the following steps:

[0115] Step S1001: Obtain the configuration parameters of the integrated inductive waveform.

[0116] Step S10011: Determine the length T of each segment after the integrated inductive signal is segmented. isac，i .

[0117] Assuming the integrated sensing device is a self-transmitting and self-receiving system, the maximum required sensing delay τ is... max =8us (corresponding to a maximum sensing distance of 1200m), T isac，i T needs to be satisfied isac，i =T isac / N=k·T ofdm ≥τ max Since the candidate values ​​of k are 1 / 8, 1 / 4, 1 / 2, 1, 2, etc., any one of these values ​​can be selected as k in this embodiment. For example, if the minimum value of k is 1, then T isac，i =T ofdm .

[0118] Step S10012: Determine the value of N based on the co-channel interference between base stations in the integrated sensing system, the scanning cycle (refresh rate), sensing distance, sensing speed, and other requirements of the target integrated sensing device.

[0119] Generally, the more severe the co-channel interference, the longer the acceptable scan period, and the lower the maximum sensing speed, the larger the N value can be configured. For example, N can be 2, 3, 4, 5, 6, 7, or 8, etc.

[0120] Step S10013, determine the length T of CP. cp , making T cp Satisfy T cp ≥τ max .

[0121] To ensure that the integrated inductive signal occupies an integer multiple of OFDM symbols, thus aligning the integrated inductive signal and the communication signal in the frame structure, when N is 2, 3, 4, 5, 6, 7, or 8, then after adding CP, it occupies 3, 4, 5, 6, 7, 8, or 9 OFDM symbols respectively.

[0122] Figure 10 This is a schematic diagram in the time domain of the integrated sensing signal when the maximum sensing delay is 1 OFDM symbol according to an embodiment of the present invention, as shown below. Figure 10 The diagram illustrates the distribution of the integrated sensing signal in the time domain when N takes the values ​​of 2, 3, 4, 5, 6, 7, and 8.

[0123] Step S10014: Configure k for each integrated sensing device. comb_offset value.

[0124] Under network conditions, multiple sensing devices can be supported with a maximum of N-splitting. Sensing devices with severe interference need to be configured with different k-splitting methods. comb_offset Value, where kcomb_offset The selectable values ​​are 0, 1, 2, ..., N-1. Different integrated sensing devices can also use different master code sequences (including but not limited to ZC, PN, chirp sequences, etc.). Different k comb_offset The value can also be achieved by configuring different sensing center frequencies, so that the transmit and receive signals between different sensing devices are combed when viewed at the same frequency. That is, under networking conditions, different sensing devices can be configured with the same center frequency but different combed signals at the same time, and the combing of different sensing devices can also be equivalently achieved by configuring different center frequencies.

[0125] In step S1002, the terminal obtains the configuration parameters of the integrated sensing signal, thereby enabling the terminal to effectively demodulate the integrated sensing signal.

[0126] In step S1003, the base station transmits an integrated sensing signal according to the configuration parameters.

[0127] Suppose that the offset of the comb configured at a certain base station at this moment is k. comb_offset Then, the time-domain signal of the base station's wireless signal, excluding the CP, is divided into N equal segments of length T. isac The time-domain signals of / N are represented as S isac，0 S isac，1 S isac，N-1 , where i and j are integers whose values ​​range from 0 to N-1.

[0128] In step S1004, the terminal receives the integrated sensing signal, processes it according to the traditional OFDM waveform processing method, and obtains communication information after performing communication-related processing based on the configuration parameters.

[0129] In step S1005, the base station receives the integrated sensing signal reflected from the sensing target, performs sensing processing according to the configuration parameters, and then obtains sensing information.

[0130] Example 4: The integrated inductive signal is used only for communication.

[0131] In this scenario embodiment, the base station is a sensing and communication integrated device. The sensing and communication integrated signal emitted by the base station is only used for communication. The specific signal determination process includes the following steps:

[0132] Step S1101: Obtain the configuration parameters of the integrated inductive waveform.

[0133] Step S11011: Determine the length T of each segment after the integrated inductive signal is segmented. isac，i .

[0134] Since there is no perceived maximum latency requirement, k can be selected from candidate values ​​such as 1 / 8, 1 / 4, 1 / 2, 1, 2, etc. However, for better compatibility with existing OFDM systems, k is generally set to 1, i.e., T. isac，i =T ofdm .

[0135] Step S11012: Determine the value of N based on requirements such as the communication interference between base stations in the integrated sensing system.

[0136] Generally, the more severe the co-channel interference, the larger the N value can be configured. For example, N can be 2, 3, 4, 5, 6, 7, or 8, etc.

[0137] Step S11013, determine the length T of CP. cp , making T cp Satisfy T cp ≥T 标准cp .

[0138] The length of the CP is mainly determined by the distance required for communication. In general scenarios, it only needs to be greater than or equal to the CP length of the communication (i.e., T). 标准cp That's it. To ensure that the integrated inductive signal occupies an integer multiple of OFDM symbols, so that the integrated inductive signal and the communication signal are aligned in the frame structure, when N is 2, 3, 4, 5, 6, 7, or 8, adding CP will occupy 2, 3, 4, 5, 6, 7, or 8 OFDM symbols respectively.

[0139] Figure 11 This is a schematic diagram in the time domain of the sensing integrated signal when the sensing integrated signal is used only for communication according to an embodiment of the present invention, as shown below. Figure 11 The diagram illustrates the distribution of the integrated sensing signal in the time domain when N takes the values ​​of 2, 3, 4, 5, 6, 7, and 8.

[0140] Step S1102: Configure k for each integrated sensing device. comb_offset value.

[0141] Under network conditions, it can support up to N combing of multiple integrated sensing devices. Integrated sensing devices with severe interference need to be configured with different k values. comb_offset Value, where k comb_offset The possible values ​​for k are 0, 1, 2, ..., N-1. Different values ​​for k... comb_offset The value can also be achieved by configuring different sensing center frequencies, so that the transmit and receive signals between different sensing devices are combed when viewed at the same frequency. That is, under networking conditions, different sensing devices can be configured with the same center frequency but different combed signals at the same time, and the combing of different sensing devices can also be equivalently achieved by configuring different center frequencies.

[0142] In step S1103, the terminal obtains the configuration parameters of the integrated sensing signal, thereby enabling the terminal to effectively demodulate the integrated sensing signal.

[0143] In step S1104, the base station transmits an integrated sensing signal according to the configuration parameters.

[0144] Suppose that the offset of the comb configured in a certain sensor device at this moment is k. comb_offset Then, the time-domain signal of the integrated sensing device, excluding the CP, is divided into N equal segments of length T. isac The time-domain signals of / N are represented as S isac，0 S isac，1 S isac，N-1 , where i and j are integers whose values ​​range from 0 to N-1.

[0145] In step S1105, the terminal receives the integrated sensing signal, processes it according to the traditional OFDM waveform processing method, and obtains communication information after performing communication-related processing based on the configuration parameters.

[0146] Example 5: Using integrated signals solely for sensing

[0147] In this scenario embodiment, the base station is a sensing integrated device, and the sensing integrated signal emitted by the base station is only used for sensing. ofdm =8.33us, supporting long-distance sensing. The specific signal determination process includes the following steps:

[0148] Step S1201: Obtain the configuration parameters of the integrated inductive waveform.

[0149] Step S12011: Determine the length T of each segment after the integrated inductive signal is segmented. isac，i .

[0150] Assuming the integrated sensing device is a self-transmitting and self-receiving system, the maximum required sensing delay τ is... max =8us (corresponding to a maximum sensing distance of 1200m), T isac，i T needs to be satisfied isac，i =T isac / N=k·T ofdm ≥τ max Since the candidate values ​​of k are 1 / 8, 1 / 4, 1 / 2, 1, 2, etc., any one of these values ​​can be selected as k in this embodiment. For example, if the minimum value of k is 1, then T isac，i =T ofdm .

[0151] Step S12012: Determine the value of N based on the co-channel interference between base stations in the integrated sensing system, the scanning cycle (refresh rate), sensing distance, sensing speed, and other requirements of the target integrated sensing device.

[0152] Generally, the more severe the co-channel interference, the longer the acceptable scan period, and the lower the maximum sensing speed, the larger the N value can be configured. For example, N can be 2, 3, 4, 5, 6, 7, or 8, etc.

[0153] Step S12013, determine the length T of CP. cp , making T cp Satisfy T cp ≥τ max .

[0154] To ensure that the integrated sensing signal occupies an integer multiple of OFDM symbols, thus aligning the integrated sensing signal and the communication signal in the frame structure, when N is 2, 3, 4, 5, 6, 7, or 8, adding CP occupies 3, 4, 5, 6, 7, 8, or 9 OFDM symbols respectively. The time-domain distribution diagram of the integrated sensing signal in this embodiment can be found in [reference needed]. Figure 9 .

[0155] Step S12014: Configure k for each integrated sensing device. comb_offset value.

[0156] Under network conditions, multiple sensing devices can be supported with a maximum of N-splitting. Sensing devices with severe interference need to be configured with different k-splitting methods. comb_offset Value, where k comb_offset The selectable values ​​are 0, 1, 2, ..., N-1. Different integrated sensing devices can also use different master code sequences (including but not limited to ZC, PN, chirp sequences, etc.). Different k comb_offset The value can also be achieved by configuring different sensing center frequencies, so that the transmit and receive signals between different sensing devices are combed when viewed at the same frequency. That is, under networking conditions, different sensing devices can be configured with the same center frequency but different combed signals at the same time, and the combing of different sensing devices can also be equivalently achieved by configuring different center frequencies.

[0157] In step S1202, the base station transmits an integrated sensing signal according to the configuration parameters.

[0158] Suppose that the offset of the comb configured at a certain base station at this moment is k. comb_offset Then, the time-domain signal of the base station's wireless signal, excluding the CP, is divided into N equal segments of length T. isac The time-domain signals of / N are represented as S isac，0 S isac，1 S isac，N-1 , where i and j are integers whose values ​​range from 0 to N-1.

[0159] In step S1203, the base station receives the integrated sensing signal reflected from the sensing target, performs sensing processing according to the configuration parameters, and then obtains sensing information.

[0160] In this embodiment of the invention, when the integrated sensing signal does not contain communication information, the integrated sensing signal can be a pure sensing signal, which can be replaced by traditional radar signals, such as linear frequency modulation signals, phase-coded signals, etc.

[0161] The waveforms designed in the above embodiments of the present invention can easily replace OFDM waveforms in communication systems to achieve communication or sensing functions. Simultaneously, based on this signal waveform, it can be used for sensing by base stations or terminals, exhibiting excellent coverage and anti-interference capabilities under low power conditions or network conditions.

[0162] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0163] Embodiments of the present invention also provide a computer-readable storage medium storing a computer program, wherein the computer program is configured to perform the steps in any of the above method embodiments when executed.

[0164] In one exemplary embodiment, the aforementioned computer-readable storage medium may include, but is not limited to, various media capable of storing computer programs, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard disk, magnetic disk, or optical disk.

[0165] Embodiments of the present invention also provide an electronic device including a memory and a processor, the memory storing a computer program and the processor being configured to run the computer program to perform the steps in any of the above method embodiments.

[0166] In one exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0167] Specific examples in this embodiment can be found in the examples described in the above embodiments and exemplary implementations, and will not be repeated here.

[0168] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0169] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A wireless signal configuration method, characterized in that, Applications include: Configure a wireless signal, which includes a cyclic prefix part and an effective signal part. The effective signal part includes N segments of unit effective signals of equal length in the time domain. The phase difference between adjacent unit effective signals is determined according to a set frequency domain comb offset K value so that the wireless signal is an N-combed signal after being transformed to the frequency domain. The effective signal part occupies the Kth comb, and N and K are integers greater than or equal to 1. The wireless signal is transmitted in the integrated sensing device.

2. The method according to claim 1, characterized in that, The configuration of the wireless signal includes: The length of the unit effective signal in the time domain, the number of the unit effective signals, the cyclic prefix length, and the frequency domain combing offset K value corresponding to the target integrated sensing device are determined based on the current application scenario; wherein, the target integrated sensing device is the device currently determining the wireless signal; The phase difference between each unit effective signal is determined based on the frequency domain comb offset K value; The wireless signal is configured based on the length of the unit valid signal, the number of the unit valid signals, the phase difference between the unit valid signals, and the cyclic prefix length.

3. The method according to claim 2, characterized in that, in, The current application scenario is one of the following: communication-only scenario, perception-only scenario, or communication-perception scenario.

4. The method according to claim 3, characterized in that, Determining the length of a unit effective signal in the time domain based on the current application scenario includes: Multiply the unit duration of the orthogonal frequency division multiplexing (OFDM) symbol corresponding to the current application scenario by a preset multiple, and determine the first multiplication result as the length of the unit effective signal, wherein the preset multiple is a power of 2.

5. The method according to claim 4, characterized in that, in, When the current application scenario is the only sensing scenario or the communication sensing scenario, the first multiplication result is greater than or equal to the maximum sensing latency corresponding to the current application scenario.

6. The method according to claim 2, characterized in that, Determining the number of valid signals per unit based on the current application scenario includes: The number of effective unit signals is determined based on the co-frequency interference between multiple integrated sensing devices in the current application scenario, as well as the scanning cycle, sensing distance, and sensing speed of the target integrated sensing device.

7. The method according to claim 3, characterized in that, When the current application scenario is a sensing-only scenario or a communication-sensing scenario, determining the cyclic prefix length based on the current application scenario includes: The cyclic prefix length is determined based on the maximum perceived latency corresponding to the current application scenario, wherein the value of the cyclic prefix length is greater than or equal to the value of the maximum perceived latency.

8. The method according to claim 3, characterized in that, in, In the case where the current application scenario is a communication-only scenario, the length of the cyclic prefix is ​​greater than or equal to the predefined standard cyclic prefix length for communication.

9. The method according to claim 2, characterized in that, Based on the frequency domain combing offset K value corresponding to the target integrated sensing device in the current application scenario, including: Based on the number of integrated sensing devices in the current application scenario, determine the number of frequency domain combing offset K values ​​corresponding to the current application scenario; Based on the number of frequency domain combing offset K values, determine multiple different frequency domain combing offset K values ​​corresponding to the current application scenario; The frequency domain combing offset K value corresponding to the target integrated sensing device is determined from the plurality of different frequency domain combing offset K values.

10. The method according to claim 9, characterized in that, The step of determining multiple distinct frequency domain combing offset K values ​​corresponding to the current application scenario based on the number of frequency domain combing offset K values ​​includes: Based on the number of frequency domain comb offset K values, a corresponding number of inductive center frequency points are set; The multiple distinct frequency domain comb offset K values ​​are determined based on the corresponding number of inductive center frequency points.

11. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, wherein the computer program, when executed by a processor, implements the steps of the method described in any one of claims 1 to 10.

12. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method described in any one of claims 1 to 10.

13. A computer program product comprising a computer program that, when executed by a processor, implements the steps of the method described in any one of claims 1 to 10.

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