Signal transmitting method, signal receiving method, storage medium, electronic device and computer program product

Abstract

The embodiment of the invention provides a signal sending method. The method comprises the following steps: determining configuration information of a first signal; a first signal is sent according to the configuration information, the first signal comprises a non-zero power signal and a zero power signal, the non-zero power signal occupies a first part of time domain resources in a time domain period of the first signal, the zero power signal occupies a second part of time domain resources in the time domain period, and the non-zero power signal occupies a second part of time domain resources in the time domain period; the time duration corresponding to the second part of time domain resources is greater than or equal to zero. According to the embodiment of the invention, the non-zero power signal and the zero power signal can be sent in a time domain period, the overall power of the signal is reduced while the short-time power of the signal is ensured, and the long-distance transmission of the signal is realized, so that the sensing distance of a sensing service is improved, and the service experience is improved. The problem that a remote target cannot be sensed in the prior art is solved, and fusion of a communication service and a sensing service is better realized.

Description

Technical Field

[0001] This application relates to the field of communications, and more specifically, to a signal transmission and reception method, a storage medium, an electronic device, and a computer program product. Background Technology

[0002] With the development of global communication services, communication systems can no longer meet people's pursuit of ultimate performance. Emerging environmental reconstruction, digital twins, virtual reality, posture recognition, deformation detection, target detection and tracking, security and other services are all driving current communication networks to support sensing capabilities.

[0003] Current communication network development is accompanied by technologies such as millimeter-wave frequencies, high bandwidth, and multi-antenna technology. These technologies have enabled communication systems to initially possess the ability to sense the physical world. Compared to current radar systems, using communication networks for sensing offers advantages such as wide deployment, long-range coverage, and dense networking, making it the ideal choice for connecting the physical and virtual worlds. Accurate reconstruction of the physical world depends on the accurate interpretation of the sensed targets and the effective handling of environmental interference.

[0004] Currently, communication organizations such as the 3rd Generation Partnership Project (3GPP) and the China Communications Standards Association (CCSA) have begun research on waveforms related to integrated communication and sensing. While radar systems have various design schemes related to radar waveforms, and communication systems also have their own waveform schemes, there is still no outstanding waveform that is universally accepted by scholars for the fusion of the two. Radar waveforms emphasize low peak-to-average power ratio and low integral sidelobe ratio. Communication systems, on the other hand, prioritize data transmission. Furthermore, both systems have stringent requirements for high-speed scenarios. Therefore, in 5G and 6G, how to select appropriate waveforms to suit communication and sensing services and achieve better communication and sensing performance is an urgent problem to be solved. Summary of the Invention

[0005] This application provides a signal transmission and reception method, a storage medium, an electronic device, and a computer program product to at least solve the problem of the inability to perceive distant targets in related technologies.

[0006] According to one embodiment of this application, a signal transmission method is provided, the method comprising: determining configuration information of a first signal; transmitting the first signal according to the configuration information, wherein the first signal includes a non-zero power signal and a zero power signal, wherein the non-zero power signal occupies a first portion of time domain resources in the time domain period of the first signal, and the zero power signal occupies a second portion of time domain resources in the time domain period, wherein the time length corresponding to the second portion of time domain resources is greater than or equal to zero.

[0007] According to another embodiment of this application, a signal receiving method is provided, the method comprising: determining configuration information of a first signal; receiving the first signal according to the configuration information, wherein the first signal includes a non-zero power signal and a zero power signal, wherein the non-zero power signal occupies a first portion of time domain resources in the time domain period of the first signal, and the zero power signal occupies a second portion of time domain resources in the time domain period, wherein the time length corresponding to the second portion of time domain resources is greater than or equal to zero.

[0008] According to another embodiment of this application, a signal configuration method is provided. The method includes: determining configuration information of a first signal, wherein the first signal includes a non-zero power signal and a zero power signal, wherein the non-zero power signal occupies a first portion of time domain resources in the time domain period of the first signal, and the zero power signal occupies a second portion of time domain resources in the time domain period, wherein the time length corresponding to the second portion of time domain resources is greater than or equal to zero; and sending the configuration information of the first signal to a first device.

[0009] According to another embodiment of this application, a terminal is provided, which is used to implement the steps in any of the above-described signal transmission method or signal reception method embodiments.

[0010] According to another embodiment of this application, a base station is provided, which is used to implement the steps in any of the above-described signal transmission method or signal reception method embodiments.

[0011] According to another embodiment of this application, a core network element is provided, which is used to implement the steps in any of the above-described signal configuration methods.

[0012] According to yet another embodiment of this application, a computer-readable storage medium is also provided, which stores a computer program configured to perform the steps in any of the above method embodiments when running.

[0013] According to yet another embodiment of this application, 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.

[0014] According to yet another embodiment of this application, a computer program product is also provided, including a computer program that, when executed by a processor, implements the steps in any of the above method embodiments.

[0015] Through the above embodiments of this application, non-zero power signals and zero power signals can be transmitted within one time domain period. While ensuring the short-term power of the signal, the overall power of the signal is reduced, realizing long-distance transmission of the signal, thereby improving the sensing distance of sensing services, solving the problem of not being able to sense distant targets in related technologies, and better realizing the integration of communication services and sensing services. Attached Figure Description

[0016] Figure 1 This is a hardware structure block diagram of the mobile terminal used in the method embodiments of this application;

[0017] Figure 2 This is a schematic flowchart of a signal transmission method according to an embodiment of this application;

[0018] Figure 3 This is a schematic flowchart of a signal receiving method according to an embodiment of this application;

[0019] Figure 4 This is a schematic flowchart of a signal configuration method according to an embodiment of this application;

[0020] Figure 5 This is a schematic diagram of the time-domain resources of the sensed signal in one embodiment of this application (I);

[0021] Figure 6 This is a schematic diagram (II) of the time-domain resources of the sensed signal in one embodiment of this application;

[0022] Figure 7 This is a schematic diagram of the time-domain resources of a long-range sensing signal in one embodiment of this application;

[0023] Figure 8 This is a schematic diagram of three base stations performing time-division multiplexing within a preset time in one embodiment of this application;

[0024] Figure 9 This is a schematic diagram of three base stations reusing resources within a preset time in another embodiment of this application;

[0025] Figure 10 This is a schematic diagram of the resource mapping method of the first OFDM waveform added in an embodiment of this application;

[0026] Figure 11 This is a schematic diagram of a resource mapping method for a second OFDM waveform added in an embodiment of this application;

[0027] Figure 12 This is a schematic diagram of the resource mapping method of DFT-s-OFDM waveform in one embodiment of this application;

[0028] Figure 13 This is a schematic diagram of the transmit and receive block diagrams of OFDM waveform and OTFS waveform in one embodiment of this application;

[0029] Figure 14 This is a schematic diagram of the processing module for CP-OFDM waveform and DFT-s-OFDM waveform in one embodiment of this application;

[0030] Figure 15 This is a schematic diagram of the overall perception process in one embodiment of this application;

[0031] Figure 16 This is a schematic diagram of the resource mapping method of the first OFDM waveform added in an exemplary embodiment of this application;

[0032] Figure 17 This is a schematic diagram of the simulation results of the first OFDM waveform added in an exemplary embodiment of this application;

[0033] Figure 18 This is a schematic diagram of the resource mapping method for the second OFDM waveform added in an exemplary embodiment of this application;

[0034] Figure 19 This is a schematic diagram of the simulation results of the second OFDM waveform added in an exemplary embodiment of this application. Detailed Implementation

[0035] The embodiments of this application will be described in detail below with reference to the accompanying drawings and examples.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0037] The method embodiments provided in this application can be applied to scenarios integrating sensing and communication services, where multiple communication nodes achieve sensing functions by sending and receiving signals. Communication nodes may include, but are not limited to, computer terminals, mobile terminals, etc. Communication nodes can also be base stations.

[0038] The methods and embodiments provided in this application can be executed on a mobile terminal, computer terminal, or similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of the mobile terminal used in the embodiments of the method of this application. For example... Figure 1 As shown, a mobile terminal may include one or more ( Figure 1Only 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 mobile terminal 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 mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0039] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer programs corresponding to the signal transmission and signal reception methods in this embodiment. The processor 102 executes various functional applications and data processing by running the computer programs stored in the memory 104, thus implementing the methods described above. The memory 104 may include high-speed random access memory and 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 the mobile terminal 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.

[0040] 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 the mobile terminal's communication provider. 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.

[0041] In the embodiments of this application, the communication node that realizes the sensing function by sending and receiving signals can be divided into a signal transmitting device and a signal receiving device. The signal transmitting device can be a base station or a terminal, and the signal receiving device can also be a base station or a terminal; this application does not impose any restrictions on this.

[0042] This application provides a signal transmission method operating on the aforementioned mobile terminal. Figure 2 This is a flowchart illustrating a signal transmission method according to an embodiment of this application, as shown below. Figure 2 As shown, the process includes the following steps:

[0043] Step S202: Determine the configuration information of the first signal;

[0044] Step S204: Send the first signal according to the configuration information.

[0045] In this embodiment, the first signal includes a non-zero power signal and a zero power signal, wherein the non-zero power signal occupies a first portion of the time domain resources in the time domain period of the first signal, and the zero power signal occupies a second portion of the time domain resources in the time domain period, wherein the time length corresponding to the second portion of the time domain resources is greater than or equal to zero.

[0046] In this embodiment, the time-domain period refers to a time length and is not used to restrict the first signal to be a periodic signal. In one case, if the first signal repeats at intervals defined by the time-domain period, then the first signal is a periodic signal. In another case, if the first signal exists for only one time-domain period, then the first signal is an aperiodic signal.

[0047] Through the embodiments of this application, non-zero power signals and zero power signals can be transmitted within one time domain period. This reduces the overall signal power while maintaining short-term signal power, enabling long-distance signal transmission and thus improving the sensing distance of sensing services. It solves the problem of being unable to sense distant targets in related technologies and better realizes the integration of communication and sensing services. Furthermore, the total number of FFT points corresponding to the zero-power and non-zero-power signals can form a power of 2. From the perspective of achieving equivalent time-domain mapping for signal transmission, the obtained time-domain baseband signal has more ideal characteristics.

[0048] In some embodiments, the entity executing steps S202 and S204 may be a signal transmitting device, including a base station or a terminal. Further, the signal receiving device may also include a base station or a terminal. For example, step S204 may include one of the following: a first base station may transmit a first signal to a first terminal; a first base station may transmit a first signal to a second base station; a first terminal may transmit a first signal to a first base station; or, the first terminal may transmit a first signal to a second terminal.

[0049] In some embodiments, the transmitting and receiving devices of the sensing signal may be the same device or different devices.

[0050] In some embodiments, the first signal is a sensing signal; or, the non-zero power signal in the first signal is the sensing signal; or, the non-zero power signal and the zero power signal in the first signal are the sensing signal.

[0051] In some embodiments, the first portion of time-domain resources or the second portion of time-domain resources includes at least one of the following: a time-domain symbol, a time slot, multiple time slots, and a preset time period, wherein the preset time period is not an integer multiple of the time-domain symbol, and the preset time period is greater than or less than the time-domain symbol. For example, the time-domain symbol may be an Orthogonal Frequency-Division Multiplexing (OFDM) symbol. The preset time period may be half an OFDM symbol, or 1.5 OFDM symbols, etc.

[0052] In this embodiment, the time width of the sensing signal can be set to a time domain symbol that is not an integer multiple. In scenarios where multiple devices sense each other or reuse resources, the performance and efficiency of communication and sensing services can be improved.

[0053] In some embodiments, the time-domain period includes the sum of the time lengths corresponding to the first part of the time-domain resources, the second part of the time-domain resources, and the third part of the time-domain resources, wherein the time length corresponding to the third part of the time-domain resources is greater than or equal to zero, and the sum of the time lengths corresponding to the first part of the time-domain resources and the second part of the time-domain resources is the time width of the first signal.

[0054] In an exemplary embodiment, if the time length corresponding to the second part of the time domain resources is zero, then the time domain period of the first signal is the sum of the time lengths corresponding to the first part of the time domain resources and the third part of the time domain resources. At this time, the time width of the first signal is the time length corresponding to the first part of the time domain resources.

[0055] In another exemplary embodiment, if the time length corresponding to the second part of the time domain resources is greater than zero, then the time domain period of the first signal is the sum of the time lengths corresponding to the first part of the time domain resources, the second part of the time domain resources, and the third part of the time domain resources. In this case, the sum of the time lengths corresponding to the first part of the time domain resources and the second part of the time domain resources is the time width of the first signal.

[0056] In some embodiments, the non-zero power signal is a reference signal or a service data signal. In an exemplary embodiment, the non-zero power signal includes, but is not limited to, the following: Physical Uplink Shared Channel (PUSCH) message, Physical Downlink Shared Channel (PDSCH) message, Sounding Reference Signal (SRS), Physical Uplink Control Channel (PUCCH) message, Physical Sidelink Shared Channel (PSSCH) message, Physical Sidelink Control Channel (PSCCH) message, Physical Sidelink Feedback Channel (PSFCH) message, Secondary Synchronization Signal (S-SS), Physical Broadcast Channel block (PSBCH block), and preamble of Physical-Random Access Channel (PRACH).

[0057] In some embodiments, the configuration information includes at least one of the following:

[0058] The position of the non-zero power signal and / or the zero power signal in the first signal;

[0059] The number of sampling points or equal division points occupied by the non-zero power signal and / or the zero power signal in the time domain period;

[0060] The sequence used by the non-zero power signal and / or the zero power signal;

[0061] The reference signal used for the non-zero power signal and / or the zero power signal;

[0062] The waveform carrying the non-zero power signal and / or the zero power signal.

[0063] In one exemplary embodiment, the time width occupied by the non-zero power signal is adjustable and is not affected by the symbol or slot granularity. For example, the time width of the non-zero power signal can be set according to the number of sampling points. For instance, in an existing OFDM system, one symbol corresponds to N = 4096 sampling points. If the time length corresponding to the non-zero power signal is half the time length of a time-domain symbol, then the effective sampling points of the non-zero power signal can be set to 4096 * (1 / 2).

[0064] In one exemplary embodiment, a symbol corresponds to sampling points N = 32, 64, 128, 512, 1024, 2048, 4096, 8192, ..., which are powers of 2, denoted as 2exp(n), where n is a non-zero positive integer. The sampling points occupied by the non-zero power signal are a portion of the total sampling points corresponding to one or more symbols.

[0065] In some embodiments, the position of the non-zero power signal and / or the zero power signal in the first signal includes at least one of the following:

[0066] The starting point of the first portion of time-domain resources and / or the second portion of time-domain resources in the time-domain period or time width;

[0067] The endpoint of the first portion of time-domain resources and / or the second portion of time-domain resources in the time-domain period or time width;

[0068] The length of the first portion of time-domain resources and / or the second portion of time-domain resources in the time-domain period or time width;

[0069] The continuity of the first portion of time-domain resources and / or the second portion of time-domain resources within the time-domain period or time-width.

[0070] In some embodiments, continuity includes both continuous and discontinuous characteristics. Continuous means that the signal is continuous and uninterrupted within the time length corresponding to its time domain resources, such as transmitting a frequency-modulated continuous wave. In an exemplary embodiment, there are three non-zero power signals in a time domain symbol / slot. Each non-zero power signal occupies a continuous number of points, but the three non-zero power signals as a whole are discontinuous; that is, there are points occupied by zero power signals among them. In other words, the three (non)zero power signals are discontinuous in this time domain symbol / slot. In one embodiment, the three transmitted non-zero power signals correspond to three different receiving BSs or terminals. In one example, the configuration information received by these three BSs or terminals contains only the non-zero power signal they need to identify; in another example, the configuration information received by the three BSs or terminals contains all three non-zero power signals. In one example, the configuration information may indicate the non-zero power signal used by the BS or terminal. In another embodiment, the three non-zero power signals are transmitted and / or received by three different BSs and / or terminals, respectively.

[0071] In some embodiments, the sequence used by the signal in the configuration information includes at least one of the following: pseudo-random sequence, low peak-to-average power ratio (Low-PAPR) sequence, Zadoff-Chu sequence, Gold sequence, m sequence, Walsh sequence, Barker code, and Hadamard sequence.

[0072] In some embodiments, the reference signal used in the configuration information includes at least one of the following: Positioning Reference Signal (PRS), Cell-specific Reference Signal (CRS), Channel State Information Reference Signal (CSI-RS), Sounding Reference Signal (SRS), Phase-Tracking Reference Signal (PTRS), Demodulation Reference Signal (DMRS), and Sidelink Positioning Reference Signal (SL-PRS).

[0073] In some embodiments, the waveform carrying the signal in the configuration information includes at least one of the following: Linear Frequency Modulation (LMF); Frequency Modulated Continuous Wave (FMCW); Orthogonal Frequency Division Multiplexing (OFDM); A newly added first OFDM; A newly added second OFDM; Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM); Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM); Orthogonal Chirp Division Multiplexing (OCDM); Orthogonal Delay-Doppler Multiplexing (ODDM); Orthogonal Time Frequency Space (OTFS); Filter Bank Multicarrier (Filter Bank Multicarrier). Multi-Carrier (FBMC); Generalized Frequency Division Multiplexing (GFDM); Universal Filtered Orthogonal Frequency Division Multiplexing (UF-OFDM); Universal Filtered Multi-Carrier (UFMC); Filtered Orthogonal Frequency Division Multiplexing (F-OFDM); Multi-Carrier Orthogonal Frequency Division Multiplexing (MC-OFDM); Single-Carrier Orthogonal Frequency Division Multiplexing (SC-OFDM).

[0074] In one exemplary embodiment, the non-zero power signal and the zero power signal may use the same waveform, or they may use different waveforms respectively.

[0075] In this embodiment, the newly added first OFDM and the newly added second OFDM are newly designed OFDM waveforms, and the processing procedure differs somewhat from the OFDM waveform generation process in the standard protocol.

[0076] In this embodiment, the newly added first OFDM is generated by first constructing a complete sequence or continuous signal (i.e., the desired baseband signal) from the non-zero power signal portion and the zero power signal portion. Then, this complete sequence or continuous signal is mapped to the frequency domain, such as by performing a Fast Fourier Transform (FFT). In the frequency domain sequence, the elements at the FFT points corresponding to frequency domain resources outside the bandwidth are set to zero. Then, an Inverse Fast Fourier Transform (IFFT) is performed on the frequency domain sequence. Alternatively, an Orthogonal Frequency Division Multiplexing (OFDM) baseband signal generation method is applied to the frequency domain sequence. In some embodiments, the newly added first OFDM may also be called an extended CP-OFDM, but this application does not limit the specific name of the waveform.

[0077] In this embodiment, the newly added second OFDM first constructs a complete sequence or continuous signal (i.e., the desired baseband signal) by combining the non-zero power signal portion with the zero power signal portion. Then, this complete sequence or continuous signal is mapped to the frequency domain, such as by performing a Discrete Fourier Transform (DFT). Zeros are then padded at positions outside the frequency domain sequence according to the number of frequency domain resource units. Finally, an Inverse Fast Fourier Transform (IFFT) is performed on the frequency domain sequence. Alternatively, an Orthogonal Frequency Division Multiplexing (OFDM) baseband signal generation method can be applied to the frequency domain sequence. In some embodiments, the newly added second OFDM may also be called an extended DFT-s-OFDM, but this application does not limit the specific name of the waveform.

[0078] In some embodiments, the first signal includes at least one of the following: signals transmitted between physical network devices, sidelink signals, uplink signals, and downlink signals.

[0079] In an exemplary embodiment, if the first signal is an uplink signal, the transmitting device of the first signal is a terminal, and the receiving device is a base station. If the first signal is a downlink signal, the transmitting device of the first signal is a base station, and the receiving device is a terminal.

[0080] In an exemplary embodiment, if the first signal is a signal transmitted between physical network devices, then the receiving device and the transmitting device of the first signal are both physical network devices, including but not limited to routers, switches, user equipment, vehicle user equipment (VUE), pedestrian user equipment (PUE), unmanned aerial vehicle (UAV), etc.

[0081] In an exemplary embodiment, if the first signal is a side link signal, then both the receiving device and the transmitting device of the first signal are terminals.

[0082] In some embodiments, step S204, which involves sending the first signal according to the configuration information, may include the following steps:

[0083] Step S2042: Generate a desired baseband signal for the first signal based on the configuration information, wherein the desired baseband signal is a sequence or a continuous signal;

[0084] Step S2044: Preprocess the desired baseband signal according to the configuration information to obtain the target frequency domain sequence;

[0085] Step S2046: The target frequency domain sequence is mapped to time domain resources by inverse fast Fourier transform (IFFT) or orthogonal frequency division multiplexing (OFDM) baseband signal generation method to obtain the first signal;

[0086] Step S2048: Send the first signal.

[0087] In some embodiments, step S2042, generating the desired baseband signal of the first signal based on the configuration information, may include one of the following steps:

[0088] Generate a non-zero power sequence or a non-zero power continuous signal corresponding to the non-zero power signal according to the configuration information; pad the non-zero power sequence or the non-zero power continuous signal with zeros according to the configuration information to obtain the desired baseband signal;

[0089] The non-zero power sequence or non-zero power continuous signal corresponding to the non-zero power signal is generated according to the configuration information, and the zero power sequence or zero power continuous signal corresponding to the zero power signal is generated according to the configuration information to obtain the desired baseband signal;

[0090] The non-zero power sequence and the zero power sequence are generated according to the configuration information, and zero-padding is performed on the non-zero power sequence and the zero power sequence according to the configuration information to obtain the desired baseband signal; or,

[0091] The non-zero power continuous signal and the zero power continuous signal are generated according to the configuration information, and zero-padding is performed on the non-zero power continuous signal and the zero power continuous signal according to the configuration information to obtain the desired baseband signal.

[0092] In the embodiments of this application, the lengths of the non-zero power signals and / or zero power signals in the desired baseband signal can be flexibly set to any desired length. The length of the finally generated desired baseband signal can be set according to the number of FFT points to be performed (such as the generation of the newly added first OFDM waveform in this application), or according to the number of resource units corresponding to the signal bandwidth (such as the generation of the newly added second OFDM waveform in this application), and this application is not limited to this.

[0093] In one exemplary embodiment, the sum of the lengths of the non-zero power signal and the zero power signal in the time domain can be set to an integer multiple of the OFDM symbol or a non-integer multiple of the OFDM symbol. If it is a non-integer multiple of the OFDM symbol, zero-padding can be selected according to waveform modulation requirements before processing.

[0094] In this embodiment, the desired baseband signal is a time-domain signal. The desired baseband signal may include a non-zero power signal and a zero-power signal. Furthermore, the desired baseband signal may also include a third part of the signal other than the non-zero power signal and the zero-power signal, which can be generated by padding the non-zero power signal and / or the zero-power signal with zeros.

[0095] In some embodiments, step S2044, which involves preprocessing the desired baseband signal according to the configuration information to obtain a target frequency domain sequence, may include: mapping the desired baseband signal to the frequency domain according to the configuration information to obtain the target frequency domain sequence.

[0096] Furthermore, depending on the type of the carrying waveform of the first signal contained in the configuration information, the method of mapping the desired baseband signal to the frequency domain according to the configuration information to obtain the target frequency domain sequence can be different.

[0097] In an exemplary embodiment, when the waveform of the sensed signal is a newly added first OFDM, the step of mapping the desired baseband signal to the frequency domain according to the configuration information to obtain the target frequency domain sequence may include: performing a Fast Fourier Transform (FFT) on the desired baseband signal with a preset number of points to obtain the target frequency domain sequence, wherein the length of the desired baseband signal and the length of the target frequency domain sequence are equal to the preset number of points of the FFT.

[0098] Furthermore, when the waveform of the sensed signal is a newly added first OFDM, the step of mapping the desired baseband signal to the frequency domain according to the configuration information to obtain the target frequency domain sequence further includes: determining the bandwidth of the first signal according to the configuration information; setting the elements at the FFT point positions corresponding to the frequency domain resources other than the bandwidth in the target frequency domain sequence to zero to obtain a new target frequency domain sequence.

[0099] In an exemplary embodiment, the parameters that determine the length of the non-zero power signal and / or the length of the zero power signal include at least one of the following: frequency domain bandwidth, subcarrier spacing, frequency domain guard interval, number of REs corresponding to the frequency domain, number of FFT points, waveform configuration information, etc.

[0100] In an exemplary embodiment, when the waveform of the sensed signal is a newly added second OFDM, the step of mapping the desired baseband signal to the frequency domain according to the configuration information to obtain the target frequency domain sequence may include: performing a Discrete Fourier Transform (DFT) on the desired baseband signal to obtain an intermediate frequency domain sequence, wherein the length of the desired baseband signal, the number of points of the DFT transform, and the length of the intermediate frequency domain sequence are equal to the number of frequency domain resource units carrying the first signal; padding the target frequency domain sequence with zeros at positions other than the intermediate frequency domain sequence to obtain the target frequency domain sequence, wherein each element in the intermediate frequency domain sequence corresponds to one frequency domain resource unit, and the length of the target frequency domain sequence is greater than the length of the intermediate frequency domain sequence.

[0101] In some embodiments, the non-zero power signal in the first signal is multiplexed with the non-zero power signal of the associated second or third signal, wherein the multiplexing includes at least one of the following: time division multiplexing, frequency division multiplexing, sequence division multiplexing, code division multiplexing, spatial domain division multiplexing, and chirp domain division multiplexing.

[0102] In an exemplary embodiment, the cellular network structure of existing mobile network deployments typically involves three overlapping base stations. In this case, resource reuse can be achieved by configuring the non-zero power signals in the first signal transmitted by the first base station, the second signal transmitted by the second base station, and the third signal transmitted by the third base station, thereby reducing mutual interference between the three base stations. For example, the three base stations can transmit non-zero power signals at different locations within the same time period, thus achieving time-division multiplexing. Alternatively, the three base stations can also transmit non-zero power signals at the same time within the same time period, with the frequency domain resources occupied by the non-zero power signals transmitted by the three base stations differing, thus achieving frequency-division multiplexing.

[0103] In some embodiments, the configuration information includes a perception window for the first signal, wherein the perception window is used to indicate or limit the location of the resources occupied by the first signal in the reserved resources.

[0104] In some embodiments, the sensing window includes at least one of the following: a time-domain sensing window, a frequency-domain sensing window, a spatial-domain sensing window, a Doppler-domain sensing window, a time-delay-domain sensing window, and a chirp-domain sensing window.

[0105] In this embodiment, step S2044, which involves preprocessing the desired baseband signal according to the configuration information to obtain a target frequency domain sequence, may further include performing a windowing operation on the desired baseband signal or the target frequency domain sequence. Through the windowing operation, the resources occupied by the first signal can be limited in one or more dimensions, achieving resource filtering and thereby eliminating noise and interference of the first signal outside the sensing window. This application does not limit the number of sensing windows, the type of sensing windows, or the processing order of different sensing windows when performing windowing operations on the first signal.

[0106] In some embodiments, the determination of the configuration information of the first signal in step S202 may include one of the following:

[0107] Determine the preset configuration information;

[0108] The pre-configured configuration information is determined, wherein the configuration information is obtained from a core network element, a first terminal, or a first base station;

[0109] Select one set of configuration information from a preset set of configuration information;

[0110] Receive the configuration information sent by the core network element;

[0111] Receive the configuration information sent by the first terminal;

[0112] Receive the configuration information sent by the first base station;

[0113] Receive auxiliary information related to the configuration information sent by the core network element, and determine the configuration information based on the auxiliary information;

[0114] The system receives recommendation information related to the configuration information sent by the core network element, and determines the configuration information based on the recommendation information.

[0115] In this embodiment, the configuration information of the first signal in the signal receiving device can be configured by static configuration, semi-static configuration or dynamic configuration.

[0116] In some embodiments, the method further includes one of the following:

[0117] Before receiving the configuration information sent by the core network element, a request message for the configuration information is sent to the core network element;

[0118] Before receiving the configuration information sent by the first terminal, a request message for the configuration information is sent to the first terminal;

[0119] Before receiving the configuration information sent by the first base station, a request message for the configuration information is sent to the first base station;

[0120] Before receiving auxiliary information related to the configuration information sent by the core network element, a request message for the auxiliary information is sent to the core network element;

[0121] Before receiving the recommendation information related to the configuration information sent by the core network element, a request message for the recommendation information is sent to the core network element.

[0122] In some embodiments, after determining the configuration information of the first signal in step S202, the method further includes at least one of the following:

[0123] Send the configuration information to the core network elements;

[0124] Send the configuration information to the second terminal;

[0125] The configuration information is sent to the second base station.

[0126] In this embodiment, the signal transmitting device can send its own first signal configuration information to the core network element or the signal receiving device, or send the first signal configuration information to other devices that may cause interference, so that they can avoid using the corresponding resources or achieve resource reuse.

[0127] In some embodiments, the method further includes one of the following:

[0128] Before sending the configuration information to the core network element, receive a request message for the configuration information sent by the core network element;

[0129] Before sending the configuration information to the second terminal, receive a request message for the configuration information sent by the second terminal;

[0130] Before sending the configuration information to the second base station, a request message for the configuration information sent by the second base station is received.

[0131] In some embodiments, the configuration information may be carried in at least one of the following messages:

[0132] Uplink Control Information (UCI);

[0133] Downlink Control Information (DCI);

[0134] Random Access Channel (RACH) messages;

[0135] Physical Uplink Shared Channel (PUSCH) messages;

[0136] Base station positioning protocol messages; for example, base station positioning protocol messages may include NR Positioning Protocol A (NRPPa) messages, which are sent by core network elements to the base station.

[0137] Terminal positioning protocol messages; for example, terminal positioning protocol messages may include LTE Positioning Protocol (LPP) messages, which are sent to the terminal by core network elements.

[0138] Sidelink Positioning Protocol (SLPP) message; this message is transmitted between terminals.

[0139] The perception protocol message, for example, is a newly added message type. It can be further subdivided into base station perception protocol messages (sent to the base station by the core network element), terminal perception protocol messages (sent to the terminal by the core network element), and side link perception protocol messages (transmitted between terminals) with reference to the above-mentioned positioning messages, but this application is not limited to this.

[0140] Configuration Grant (CG) message;

[0141] Radio Resource Control (RRC) message.

[0142] In an exemplary embodiment, the transmitting device (base station or terminal) of the first signal may first send a request message for configuration information to the core network element, and then receive the configuration information from the core network element.

[0143] In an exemplary embodiment, the transmitting device (base station or terminal) of the first signal may also send a request message for configuration information to other base stations or terminals, and then receive the configuration information from the corresponding base station or terminal.

[0144] In an exemplary embodiment, the transmitting device (base station or terminal) of the first signal may first send a request message for auxiliary information or recommendation information related to the configuration information to the core network element, then receive the corresponding auxiliary information or recommendation information from the core network element, and determine the configuration information based on the auxiliary information or recommendation information.

[0145] In an exemplary embodiment, the transmitting device (base station or terminal) of the first signal can report the configuration information of the first signal to the core network element, and then the core network element can synchronize the configuration information to the receiving device of the first signal.

[0146] In an exemplary embodiment, the transmitting device (base station or terminal) of the first signal can receive configuration information from the receiving device (base station or terminal) of the first signal. This configuration information may be requested proactively by the transmitting device from the receiving device, whereby the transmitting device first sends a corresponding request message to the receiving device, and then the transmitting device receives the corresponding configuration information from the receiving device. Alternatively, this configuration information may also be proactively sent by the receiving device to the transmitting device.

[0147] Through the embodiments of this application, long-distance transmission of sensing signals can be realized, thereby improving the sensing distance of sensing services, solving the problem of not being able to sense distant targets in related technologies, and better realizing the integration of communication services and sensing services.

[0148] This application also provides a signal receiving method for the aforementioned mobile terminal. Figure 3 This is a flowchart illustrating a signal receiving method according to an embodiment of this application, as shown below. Figure 3 As shown, the process includes the following steps:

[0149] Step S302: Determine the configuration information of the first signal;

[0150] Step S304: Receive the first signal according to the configuration information.

[0151] In this embodiment, the first signal includes a non-zero power signal and a zero power signal, wherein the non-zero power signal occupies a first portion of the time domain resources in the time domain period of the first signal, and the zero power signal occupies a second portion of the time domain resources in the time domain period, wherein the time length corresponding to the second portion of the time domain resources is greater than or equal to zero.

[0152] Through the embodiments of this application, non-zero power signals and zero power signals can be transmitted within one time domain period. While ensuring the short-term power of the signal, the overall power of the signal is reduced, realizing long-distance transmission of the signal, thereby improving the sensing distance of sensing services, solving the problem of not being able to sense distant targets in related technologies, and better realizing the integration of communication services and sensing services.

[0153] In some embodiments, the entity executing steps S302 and S304 may be a signal receiving device, including a base station or a terminal. Further, the signal transmitting device may also include a base station or a terminal. For example, step S304 may include one of the following: a first base station may receive a first signal from a first terminal; a first base station may receive a first signal from a second base station; a first terminal may receive a first signal from a first base station; or, the first terminal may receive a first signal from a second terminal.

[0154] In some embodiments, the first signal is a sensing signal; or, the non-zero power signal in the first signal is the sensing signal; or, the non-zero power signal and the zero power signal in the first signal are the sensing signal.

[0155] In some embodiments, the first portion of time-domain resources or the second portion of time-domain resources includes at least one of the following: a time-domain symbol, a time slot, multiple time slots, and a preset time period, wherein the preset time period is not an integer multiple of the time-domain symbol, and the preset time period is greater than or less than the time-domain symbol. For example, the time-domain symbol may be an OFDM symbol.

[0156] In some embodiments, the time-domain period includes the sum of the time lengths corresponding to the first part of the time-domain resources, the second part of the time-domain resources, and the third part of the time-domain resources, wherein the time length corresponding to the third part of the time-domain resources is greater than or equal to zero, and the sum of the time lengths corresponding to the first part of the time-domain resources and the second part of the time-domain resources is the time width of the first signal.

[0157] In some embodiments, the non-zero power signal is a reference signal or a service data signal. In an exemplary embodiment, the non-zero power signal includes, but is not limited to, PUSCH messages, PDSCH messages, SRS, PUCCH messages, PSSCH messages, PSCCH messages, PSFCH messages, S-SS, PSBCH blocks, etc.

[0158] In some embodiments, the configuration information includes at least one of the following:

[0159] The position of the non-zero power signal and / or the zero power signal in the first signal;

[0160] The number of sampling points or equal division points occupied by the non-zero power signal and / or the zero power signal in the time domain period;

[0161] The sequence used by the non-zero power signal and / or the zero power signal;

[0162] The reference signal used for the non-zero power signal and / or the zero power signal;

[0163] The waveform carrying the non-zero power signal and / or the zero power signal.

[0164] In some embodiments, the position of the non-zero power signal and / or the zero power signal in the first signal includes at least one of the following:

[0165] The starting point of the first portion of time-domain resources and / or the second portion of time-domain resources in the time-domain period or time width;

[0166] The endpoint of the first portion of time-domain resources and / or the second portion of time-domain resources in the time-domain period or time width;

[0167] The length of the first portion of time-domain resources and / or the second portion of time-domain resources in the time-domain period or time width;

[0168] The continuity of the first portion of time-domain resources and / or the second portion of time-domain resources within the time-domain period or time-width.

[0169] In some embodiments, continuity includes both continuity and discontinuity. Continuity means that the signal is continuous and uninterrupted within the time length corresponding to its time domain resources, such as transmitting a frequency-modulated continuous wave. In an exemplary embodiment, there are three non-zero power signals in a time domain symbol. Each non-zero power signal occupies a continuous number of points, but the three non-zero power signals are discontinuous, meaning there are points occupied by zero power signals among them. In other words, the three non-zero power signals are discontinuous in this time domain symbol.

[0170] In some embodiments, the sequence used by the signal in the configuration information includes at least one of the following: pseudo-random sequence, Low-PAPR sequence, Zadoff-Chu sequence, Gold sequence, m sequence, Walsh sequence, Barker code, and Hadamard sequence.

[0171] In some embodiments, the reference signal used in the configuration information includes at least one of the following: PRS, CRS, CSI-RS, SRS, PTRS, DMRS, SL-PRS.

[0172] In some embodiments, the waveform of the signal carried in the configuration information includes at least one of the following: LMF, FMCW, OFDM, newly added first OFDM, newly added second OFDM, CP-OFDM, DFT-s-OFDM, OCDM, ODDM, OTFS, FBMC, GFDM, UF-OFDM, UFMC, F-OFDM, MC-OFDM, SC-OFDM.

[0173] In one exemplary embodiment, the non-zero power signal and the zero power signal may use the same waveform, or they may use different waveforms respectively.

[0174] In this embodiment, the newly added first OFDM and the newly added second OFDM are newly designed OFDM waveforms, and the processing procedure differs somewhat from the OFDM waveform generation process in the standard protocol.

[0175] In this embodiment, the newly added first OFDM first maps the desired baseband signal (time-domain signal) to the frequency domain, such as by performing an FFT, and then sets the elements at the FFT points corresponding to frequency domain resources outside the bandwidth in the frequency domain sequence to zero. Then, an Inverse Fast Fourier Transform (IFFT) is performed on the frequency domain sequence, or an Orthogonal Frequency Division Multiplexing (OFDM) baseband signal generation method is applied to the frequency domain sequence. In some embodiments, the newly added first OFDM may also be called an extended CP-OFDM, but this application does not limit the specific name of the waveform.

[0176] In this embodiment, the newly added second OFDM first maps the desired baseband signal (time-domain signal) to the frequency domain, such as by performing a DFT, and pads the frequency domain sequence with zeros at positions other than those in the frequency domain sequence according to the number of frequency domain resource units. Then, an inverse fast Fourier transform (IFFT) is performed on the frequency domain sequence, or an orthogonal frequency division multiplexing (OFDM) baseband signal generation method is applied to the frequency domain sequence. In some embodiments, the newly added second OFDM may also be called an extended DFT-s-OFDM, but this application does not limit the specific name of the waveform.

[0177] In some embodiments, the configuration information includes a perception window for the first signal, wherein the perception window is used to indicate or limit the location of the communication resources occupied by the first signal in the reserved resources.

[0178] In some embodiments, the sensing window includes at least one of the following: a time-domain sensing window, a frequency-domain sensing window, a spatial-domain sensing window, a Doppler-domain sensing window, a time-delay-domain sensing window, and a chirp-domain sensing window.

[0179] In some embodiments, step S302 determines the configuration information of the first signal, including one of the following:

[0180] Determine the preset configuration information;

[0181] The pre-configured configuration information is determined, wherein the configuration information is obtained from a core network element, a first terminal, or a first base station;

[0182] Select one set of configuration information from a preset set of configuration information;

[0183] Receive the configuration information sent by the core network element;

[0184] Receive the configuration information sent by the first terminal;

[0185] Receive the configuration information sent by the first base station;

[0186] Receive auxiliary information related to the configuration information sent by the core network element, and determine the configuration information based on the auxiliary information;

[0187] The system receives recommendation information related to the configuration information sent by the core network element, and determines the configuration information based on the recommendation information.

[0188] In this embodiment, the configuration information of the first signal in the signal transmitting device can be configured by static configuration, semi-static configuration or dynamic configuration.

[0189] In some embodiments, the method further includes one of the following:

[0190] Before receiving the configuration information sent by the core network element, a request message for the configuration information is sent to the core network element;

[0191] Before receiving the configuration information sent by the first terminal, a request message for the configuration information is sent to the first terminal;

[0192] Before receiving the configuration information sent by the first base station, a request message for the configuration information is sent to the first base station;

[0193] Before receiving auxiliary information related to the configuration information sent by the core network element, a request message for the auxiliary information is sent to the core network element;

[0194] Before receiving the recommendation information related to the configuration information sent by the core network element, a request message for the recommendation information is sent to the core network element.

[0195] In some embodiments, after determining the configuration information of the first signal in step S202, the method further includes at least one of the following:

[0196] Send the configuration information to the core network elements;

[0197] Send the configuration information to the second terminal;

[0198] The configuration information is sent to the second base station.

[0199] In this embodiment, the signal receiving device can send its own first signal configuration information to the core network element or the signal transmitting device, or send the first signal configuration information to other devices that may cause interference, so that they can avoid using the corresponding resources or achieve resource reuse.

[0200] In some embodiments, the method further includes one of the following:

[0201] Before sending the configuration information to the core network element, receive a request message for the configuration information sent by the core network element;

[0202] Before sending the configuration information to the second terminal, receive a request message for the configuration information sent by the second terminal;

[0203] Before sending the configuration information to the second base station, a request message for the configuration information sent by the second base station is received.

[0204] In some embodiments, the configuration information is carried in at least one of the following messages:

[0205] Uplink control signaling;

[0206] Downlink control signaling;

[0207] Random Access Channel (RACH) messages;

[0208] Physical Uplink Shared Channel (PUSCH) messages;

[0209] Base station positioning protocol messages;

[0210] Terminal location protocol message;

[0211] Sidelink Location Protocol (SLP) messages;

[0212] Sensing protocol messages;

[0213] Configure authorized CG messages;

[0214] Radio Resource Control (RRC) message.

[0215] In an exemplary embodiment, the receiving device (base station or terminal) of the first signal may first send a request message for configuration information to the core network element, and then receive the configuration information from the core network element.

[0216] In an exemplary embodiment, the receiving device (base station or terminal) of the first signal may also send a request message for configuration information to other base stations or terminals, and then receive the configuration information from the corresponding base station or terminal.

[0217] In an exemplary embodiment, the receiving device (base station or terminal) of the first signal may first send a request message for auxiliary information or recommendation information related to the configuration information to the core network element, then receive the corresponding auxiliary information or recommendation information from the core network element, and determine the configuration information based on the auxiliary information or recommendation information.

[0218] In an exemplary embodiment, the receiving device (base station or terminal) of the first signal can report the configuration information of the first signal to the core network element, and then the core network element can synchronize the configuration information to the transmitting device of the first signal.

[0219] In an exemplary embodiment, the receiving device (base station or terminal) of the first signal can receive configuration information from the transmitting device (base station or terminal) of the first signal. This configuration information may be requested proactively by the receiving device from the transmitting device, whereby the receiving device first sends a corresponding request message to the transmitting device, and then receives the corresponding configuration information from the transmitting device. Alternatively, this configuration information may also be proactively sent by the transmitting device to the receiving device.

[0220] In this embodiment, the processing flow of the signal receiving device for the first signal corresponds to the processing flow of the signal transmitting device when generating the first signal. For example, the processing order of the receiving flow and the transmitting flow may be reversed, and the processing methods of the receiving flow and the transmitting flow may respectively adopt preset transformation processing and corresponding inverse transformation processing, which will not be elaborated here.

[0221] Through the embodiments of this application, long-distance transmission of sensing signals can be realized, thereby improving the sensing distance of sensing services, solving the problem of not being able to sense distant targets in related technologies, and better realizing the integration of communication services and sensing services.

[0222] This application also provides a signal configuration method, which operates on a core network element. Figure 4 This is a flowchart illustrating a signal configuration method according to an embodiment of this application, as shown below. Figure 4 As shown, the process includes the following steps:

[0223] Step S402: Determine the configuration information of the first signal;

[0224] Step S404: Send the configuration information of the first signal to the first device.

[0225] In this embodiment, the first signal in step S402 includes a non-zero power signal and a zero power signal. The non-zero power signal occupies a first part of the time domain resources in the time domain period of the first signal, and the zero power signal occupies a second part of the time domain resources in the time domain period. The time length corresponding to the second part of the time domain resources is greater than or equal to zero.

[0226] In this embodiment, the first device includes a base station or a terminal. The first device can be a receiving device for the first signal or a transmitting device for the first signal.

[0227] In some embodiments, the first signal is a sensing signal; or, the non-zero power signal in the first signal is the sensing signal; or, the non-zero power signal and the zero power signal in the first signal are the sensing signal.

[0228] In some embodiments, the first portion of time-domain resources or the second portion of time-domain resources includes at least one of the following: a time-domain symbol, a time slot, multiple time slots, and a preset time period, wherein the preset time period is not an integer multiple of the time-domain symbol, and the preset time period is greater than or less than the time-domain symbol. For example, the time-domain symbol may be an OFDM symbol. The preset time period may be half an OFDM symbol, or 1.5 OFDM symbols, etc.

[0229] In this embodiment, the core network element can directly send the configuration information of the first signal or indirectly send the configuration information. If it is sent indirectly, step S404, which sends the configuration information of the first signal to the first device, may include: sending auxiliary information or recommendation information related to the configuration information to the first device, so that the first device can determine the configuration information of the first signal based on the auxiliary information or the recommendation information.

[0230] In some embodiments, before sending the configuration information of the first signal to the first device in step S404, the method may further include: receiving a request message for the configuration information sent by the first device, wherein the request message for the configuration information is used to request the core network element to provide feedback on the configuration information.

[0231] In some embodiments, step S402, which determines the configuration information of the first signal, may include at least one of the following:

[0232] Determine the preset configuration information;

[0233] The pre-configured configuration information is determined, wherein the configuration information is obtained from the second device;

[0234] Select one set of configuration information from a preset set of configuration information;

[0235] Receive the configuration information sent by the second device.

[0236] In some embodiments, the configuration information includes at least one of the following:

[0237] The position of the non-zero power signal and / or the zero power signal in the first signal;

[0238] The number of sampling points or equal division points occupied by the non-zero power signal and / or the zero power signal in the time domain period;

[0239] The sequence used by the non-zero power signal and / or the zero power signal;

[0240] The reference signal used for the non-zero power signal and / or the zero power signal;

[0241] The waveform carrying the non-zero power signal and / or the zero power signal.

[0242] In some embodiments, the position of the non-zero power signal and / or the zero power signal in the first signal includes at least one of the following:

[0243] The starting point of the first portion of time-domain resources and / or the second portion of time-domain resources in the time-domain period or time width;

[0244] The endpoint of the first portion of time-domain resources and / or the second portion of time-domain resources in the time-domain period or time width;

[0245] The length of the first portion of time-domain resources and / or the second portion of time-domain resources in the time-domain period or time width;

[0246] The continuity of the first portion of time-domain resources and / or the second portion of time-domain resources within the time-domain period or time-width.

[0247] In some embodiments, continuity includes both continuity and discontinuity. Continuity means that the signal is continuous and uninterrupted within the time length corresponding to its time domain resources, such as transmitting a frequency-modulated continuous wave. In an exemplary embodiment, there are three non-zero power signals in a time domain symbol. Each non-zero power signal occupies a continuous number of points, but the three non-zero power signals are discontinuous, meaning there are points occupied by zero power signals among them. In other words, the three non-zero power signals are discontinuous in this time domain symbol.

[0248] In some embodiments, the sequence used by the signal in the configuration information includes at least one of the following: pseudo-random sequence, Low-PAPR sequence, Zadoff-Chu sequence, Gold sequence, m sequence, Walsh sequence, Barker code, and Hadamard sequence.

[0249] In some embodiments, the reference signal used in the configuration information includes at least one of the following: PRS, CSI, CSI-RS, SRS, PTRS, DMRS, SL-PRS.

[0250] In some embodiments, the waveform of the signal carried in the configuration information includes at least one of the following: LMF, FMCW, OFDM, newly added first OFDM, newly added second OFDM, CP-OFDM, DFT-s-OFDM, OCDM, ODDM, OTFS, FBMC, GFDM, UF-OFDM, UFMC, F-OFDM, MC-OFDM, SC-OFDM.

[0251] In this embodiment, the newly added first OFDM and the newly added second OFDM are newly designed OFDM waveforms, and the processing procedure differs somewhat from the OFDM waveform generation process in the standard protocol.

[0252] In this embodiment, the newly added first OFDM first maps the desired baseband signal (time-domain signal) to the frequency domain, such as by performing an FFT, and then sets the elements at the FFT points corresponding to frequency domain resources outside the bandwidth in the frequency domain sequence to zero. Then, an Inverse Fast Fourier Transform (IFFT) is performed on the frequency domain sequence, or an Orthogonal Frequency Division Multiplexing (OFDM) baseband signal generation method is applied to the frequency domain sequence. In some embodiments, the newly added first OFDM may also be called an extended CP-OFDM, but this application does not limit the specific name of the waveform.

[0253] In this embodiment, the newly added second OFDM first maps the desired baseband signal (time-domain signal) to the frequency domain, such as by performing a DFT, and pads the frequency domain sequence with zeros at positions other than those in the frequency domain sequence according to the number of frequency domain resource units. Then, an inverse fast Fourier transform (IFFT) is performed on the frequency domain sequence, or an orthogonal frequency division multiplexing (OFDM) baseband signal generation method is applied to the frequency domain sequence. In some embodiments, the newly added second OFDM may also be called an extended DFT-s-OFDM, but this application does not limit the specific name of the waveform.

[0254] In some embodiments, the configuration information includes a perception window for the first signal, wherein the perception window is used to indicate or limit the location of the resources occupied by the first signal in the reserved resources.

[0255] In some embodiments, the sensing window includes at least one of the following: a time-domain sensing window, a frequency-domain sensing window, a spatial-domain sensing window, a Doppler-domain sensing window, a time-delay-domain sensing window, and a chirp-domain sensing window.

[0256] Through the embodiments of this application, core network elements can flexibly configure the configuration information of sensing signals. By setting the waveform, sequence, time domain resources, etc. of sensing signals, long-distance transmission of sensing signals can be achieved. By setting the sensing window of sensing signals, signal interference can be reduced, thereby improving the sensing distance of sensing services. This solves the problem of not being able to sense distant targets in related technologies and better realizes the integration of communication services and sensing services.

[0257] In an exemplary embodiment of this application, the first signal may be a pulse signal, and the transmission time of the sensing signal is the duration of the first signal. The time-domain period of the first signal is the pulse repetition interval of the pulse signal. In this embodiment, a time-domain period can be divided into a first part of time-domain resources, a second part of time-domain resources, and a third part of time-domain resources, wherein the first part of time-domain resources is the time-domain resources of a non-zero power signal, the second part of time-domain resources is the time-domain resources of a zero power signal, and the third part of time-domain resources is the remaining time-domain resources in a time-domain period excluding the first part of time-domain resources and the second part of time-domain resources.

[0258] Figure 5 This is a schematic diagram (I) of the time-domain resources of the sensed signal in one embodiment of this application, as shown below. Figure 5 As shown, the sensed signal includes both non-zero power signals and zero power signals.

[0259] In this embodiment, the transmission time of the sensing signal (i.e., the duration of the first signal) is the sum of the time lengths corresponding to the first part of the time domain resources and the second part of the time domain resources. The third part of the time domain resources in the time domain period is greater than or equal to zero.

[0260] Figure 6 This is a schematic diagram (II) of the time-domain resources of the sensed signal in one embodiment of this application, as shown below. Figure 6 As shown, the sensing signal includes only non-zero power signals, but not zero power signals.

[0261] In this embodiment, the transmission time of the sensing signal (i.e., the duration of the first signal) is the duration corresponding to the first portion of the time-domain resources. The second portion of the time-domain resources in the time-domain period can be greater than or equal to zero, and the third portion of the time-domain resources can be greater than or equal to zero; this application does not impose any restrictions on this.

[0262] In this embodiment, for existing OFDM systems, the time-domain waveform corresponding to the transmitted reference signal is continuous. For sensing services, especially in scenarios where the target is far away, the transmission power cannot be too high. This is because if the power is too high, the antenna isolation plate is limited, and it cannot guarantee the power leakage from the transmitting antenna to the receiving antenna, thus causing a serious self-interference problem. On the other hand, if the transmission power is low, it can only sense targets that are relatively close and cannot sense distant targets.

[0263] Therefore, this application proposes a signal waveform capable of long-distance sensing. For a time-domain symbol, a reference signal (RS) can be transmitted at the initial position of the time-domain symbol, and no transmission is performed after the initial position. For example, in the design of transmitting a waveform on a time-domain symbol, a non-zero power RS ​​can be transmitted on the first part of the time-domain resources in the time-domain symbol, and a zero power RS ​​can be transmitted on the second part of the time-domain resources in the time-domain symbol.

[0264] Figure 7 This is a schematic diagram of the time-domain resources of a long-range sensing signal in one embodiment of this application, as shown below. Figure 7 As shown, the signal is the reference signal RS, and the time domain period or time width of the signal is 11us. The time length corresponding to the non-zero power RS ​​is 1us, and the time length corresponding to the zero power RS ​​is 10us.

[0265] In this embodiment, the relevant parameters of the non-zero power RS ​​and / or zero power RS ​​are configurable. These parameters include the location, length, number of sampling points occupied by the non-zero power RS, the sequence used, and the specific waveform it carries. The configuration method can be static, semi-static, or dynamic.

[0266] In an exemplary embodiment, the relevant parameters of the non-zero power RS ​​and / or zero power RS ​​can be recommended or configured to base station BS1 by a core network element. BS1 can then perform self-transmitting and self-receiving sensing by transmitting a sensing reference signal with this configuration. The core network element can be a Sensing Function (SF), which notifies BS1, BS2, or other base stations of the configuration information related to the sensing waveform, thus avoiding interference from other BS-transmitted signals related to the SF on BS1's transmitted signal.

[0267] In one exemplary embodiment, the relevant parameters of non-zero power RS ​​and / or zero power RS ​​can be recommended or configured to the terminal UE by the core network elements. In this case, the UE can perform self-transmitted and self-received sensing by transmitting a sensing reference signal with this configuration. Core network elements such as the SF notify the UE and other UEs or BSs of the sensing waveform-related configuration, which can avoid interference from signals transmitted by other UEs or BSs related to the SF to the UE's transmitted signal.

[0268] In one exemplary embodiment, the waveform configuration used for the sensing signal can be selected by the BS or UE. In this case, the BS or UE needs to send its selected waveform configuration to the core network element, such as the SF. This allows the SF to know the waveforms used by these devices, enabling it to uniformly schedule or advise other UEs or BSs to change or recommend waveform configuration parameters. This avoids mutual interference caused by the BS or UE independently selecting waveform parameters.

[0269] In one exemplary embodiment, non-zero power RS ​​and / or zero power RS ​​are configured by the BS or UE, or notified to the UE by the BS or UE. The specific configuration method involves dynamically configuring the sensing waveform parameters sent or received by the UE via DCI or UCI signaling. Alternatively, the UE can configure waveform-related parameters in RRC signaling. The configuration information can be static or semi-static. In this case, the UE can perform self-transmitting and self-receiving sensing by sending the sensing waveform with the configured settings. For example, the UE can send the sensing waveform with the configured settings, which can then be received by other UEs or the BS, thus achieving sensing in an A-transmit, B-receive mode.

[0270] In one exemplary embodiment, the UE, acting as a sensing receiving device, needs to know the configuration information for receiving sensing waveforms in order to complete sensing services. Therefore, the UE can obtain the sensing waveform configuration parameters sent by the sensing transmitting device from the BS or the UE itself. Optionally, based on these waveform parameters and the resource locations where the configuration is used, the UE can avoid interference from corresponding resources and select resources with minimal or no interference to send the sensing waveform. In particular, for the UE acting as a sensing receiving device, knowing where to receive non-zero power RS ​​can significantly reduce the complexity of blind detection.

[0271] In some embodiments, the time-domain resources corresponding to the non-zero power RS ​​can be the time-domain resources occupied by the signal transmitting device when it actually transmits the signal. For self-transmitting and self-receiving devices, the time-domain resources (also called time windows) corresponding to the zero-power RS ​​can be used to receive the echo signals of the non-zero power RS ​​it transmits.

[0272] In another exemplary embodiment, the time window for receiving the echo signal from the non-zero power RS ​​is configurable, including static, semi-static, or dynamic configurations. The length of the time window for receiving the echo signal can be within the time range of the zero power RS, or it can be equal to or greater than the duration occupied by the zero power RS. For example, the time window for receiving the echo signal can span the length of a time domain symbol, or it can span the length of a time slot.

[0273] In an exemplary embodiment, the transmission duration of the zero-power RS ​​and / or the non-zero-power RS ​​can be configured at a time granularity. For example, the time-domain resource configuration of the zero-power RS ​​and / or the non-zero-power RS ​​is referenced to the start time of the time-domain symbol. For instance, if the waveform configuration of the non-zero-power RS ​​starts at 0µs and the transmission duration of the non-zero-power RS ​​is 1µs, the time-domain resource configuration of the zero-power RS ​​can be represented as from 1µs to 11µs, or from 1µs to 33µs.

[0274] In another exemplary embodiment, the transmission duration of zero-power RS ​​and / or non-zero-power RS ​​can be configured according to the number of sampling points or equal division points. Here, a sampling point is the transmission from the receiver's perspective, and an equal division point can be understood as dividing the transmitted time-domain symbol into N equal points. In one exemplary embodiment, one time-domain symbol corresponds to N points. With the sampling points as a reference, the configuration of the non-zero-power RS ​​is the sampling point position from N / 3 to 2N / 3. That is, the non-zero-power RS ​​is transmitted within the time-domain range corresponding to these sampling points. In one exemplary embodiment, a symbol is configured with only one continuous non-zero-power region. Transmission from N / 3 to 2N / 3 is performed, while other regions are zero-power transmissions, such as from 0 to N / 3 and from 2N / 3 to N. Furthermore, one or more zero-power regions or one or more non-zero-power regions can be configured on a single symbol. In other embodiments, the symbol mentioned above can also be replaced with other time-domain granularities, such as a slot, a preset time period, etc., wherein the preset time period is a symbol that is not an integer multiple, such as half a symbol, or 1.5 times the symbol.

[0275] For existing OFDM waveforms, the length of the CP (Concurrent Profile) limits the maximum sensing distance of the sensing service. In radar, when using frequency-modulated continuous waves (FM Continuous Wave), it generally operates in full-duplex mode. However, the transmission power of FM Continuous Wave is generally not too high; otherwise, the receiving equipment is prone to power oversaturation, thus failing to detect the target. For long-range sensing, pulse waves are generally used. Pulse waves have high power during transmission, but they generally cannot receive the target during transmission. For relatively close targets, the reflected echo cannot be received during pulse transmission, thus creating a sensing blind zone.

[0276] Therefore, the first signal in this embodiment can combine the waveform patterns of continuous wave and pulse wave to design a signal waveform that includes both non-zero power and zero power signals. The transmitting device can receive the echo signal corresponding to the non-zero power signal while transmitting the zero power signal. This not only enables the sensing signal to have long-distance sensing capability but also ensures the reception of the echo signal, thereby improving the performance of the sensing service.

[0277] In one embodiment of this application, for the three-sector structure of an existing base station, continuous waves and pulse waves can be configured simultaneously within a certain time domain range. The first signal can be considered a pulse wave, and its pulse interval time can be called the time domain period. One time domain period includes both the time for transmitting the signal and the time for not transmitting the signal. The sensing signal can be considered a continuous wave (the transmission time of the sensing signal is continuous in the time domain), and the time domain resources it occupies can also be considered the time width of the first signal. In this embodiment, the time domain range can include, but is not limited to, a single time slot or symbol; that is, the embodiment can simultaneously configure pulse waves and continuous waves within a single time slot or a single time domain symbol.

[0278] In an exemplary embodiment, the configuration information of the first signal may include the resource locations corresponding to pulse waves and continuous waves, which may be represented as the resource locations corresponding to zero-power signals and / or non-zero-power signals. For example, in a slot / symbol, half of the slot / symbol may be used to transmit non-zero-power signals, and the remaining half may be used to transmit zero-power signals.

[0279] In this embodiment, a low-interference and wide-coverage waveform pattern is proposed for the existing cellular network structure of mobile network deployment. To improve signal coverage, three base stations with overlapping sector areas can be set up. Based on this, the signal transmission and reception resources of these three base stations can be multiplexed, thereby reducing mutual interference between the three base stations. The multiplexing methods include, but are not limited to, time-division multiplexing and frequency-division multiplexing.

[0280] Figure 8 This is a schematic diagram of three base stations performing time-division multiplexing within a preset time in one embodiment of this application, as shown below. Figure 8 As shown, the three base stations (BS1, BS2, and BS3) that might otherwise interfere with each other are time-division multiplexed within a time range, which can be set to the length of a time-domain symbol of 33µs. In this case, the first base station occupies the first 11µs, including 1µs of non-zero power RS ​​transmission and 10µs of zero-power RS ​​transmission; the second base station occupies the middle 11µs, and the third base station occupies the last 11µs. Similarly, within each base station's 11µs, non-zero power RS ​​is transmitted in the first 1µs, and zero-power RS ​​is transmitted in the last 10µs.

[0281] In one exemplary embodiment, the time window in which each BS transmits a non-zero power RS ​​corresponds to the reception window in which the BS or other device receives the non-zero power RS.

[0282] In this embodiment, the time length of the time-domain resources corresponding to the zero-power RS ​​and non-zero-power RS, as well as the time window of the receiving RS, can be flexibly configured. In one exemplary embodiment, the configuration of the zero-power RS ​​and non-zero-power RS ​​can be related to the subcarrier spacing. In another exemplary embodiment, the configuration of the zero-power RS ​​and non-zero-power RS ​​is related to the system time, sampling rate, and sampling interval.

[0283] In one exemplary embodiment, the time window for receiving RS can be in time-domain symbols as the smallest granularity. After reception, the device can select the position corresponding to the non-zero power RS ​​according to the waveform configuration parameters. Furthermore, during matched filtering, matched reception can be performed only based on the non-zero power RS.

[0284] Through the embodiments of this application, flexible time-division resource configuration can be performed for multiple devices, and the waveform configuration parameters of the non-zero power RS ​​and zero power RS ​​of each device can be the same or different.

[0285] In an exemplary embodiment, a core network element, such as a SF, can configure zero-power signals and non-zero-power signals for multiple UEs that may interfere with each other in a time-division multiplexing manner. For two UEs that are close to each other, the duration of the non-zero-power signal configured for one UE is longer than the duration of the zero-power signal configured for the other UE, thereby reducing interference between the two UEs that are close to each other. This is because when the duration of the non-zero-power signal is longer, its transmission power can also be lower than when the duration of the non-zero-power signal is shorter.

[0286] In some embodiments, the transmission power of a non-zero power signal is related to the resources occupied by the transmission of the non-zero power signal. For example, at the same power spectral density, the more non-zero power resources are occupied in the time domain, the higher the average transmission power; conversely, the less non-zero power resources are occupied in the time domain, the lower the average transmission power. Optionally, a fixed transmission power is selected. In this case, the more non-zero power resources are occupied in the time domain, the lower the transmission power corresponding to the non-zero power RS; conversely, the less non-zero power resources are occupied in the time domain, the higher the corresponding transmission power.

[0287] Figure 9 This is a schematic diagram illustrating resource reuse of three base stations within a preset time period in another embodiment of this application, as shown below. Figure 9As shown, the three base stations (BS1, BS2, and BS3) that might otherwise interfere with each other occupy the same time-domain resources when transmitting non-zero power RS ​​and zero power RS. In this case, the three base stations can perform frequency division, sequence differentiation, code division, spatial division, chirp domain division, etc., on the resources for transmitting non-zero power RS ​​within a time range, thereby achieving resource reuse and ensuring that the non-zero power RS ​​transmitted by different base stations have orthogonality, uncorrelation characteristics, or low interference characteristics in the frequency domain, code domain, spatial domain, chirp domain, and transmission sequence, thereby reducing interference to the receiving equipment caused by other devices.

[0288] In this embodiment, the time range can be set to the time length of one time-domain symbol, 33µs. At this time, BS1, BS2, and BS3 all transmit non-zero power RS ​​in the initial 1µs of the time-domain symbol and zero power RS ​​in the remaining portion of the time-domain symbol. Therefore, it is necessary to reuse the resources of the three BSs in the 1µs of time-domain resources corresponding to the non-zero power RS, except for the time domain. The resource reuse methods include at least one of the following: frequency division, sequence differentiation, code division, spatial division, chirp domain division, etc.

[0289] In one exemplary embodiment, the three base stations can use different RS sequences for signal transmission, or they can use different parameters of the same type of sequence, such as different root sequences of a ZC sequence, or shift sequences. In another example, different devices can use the same sequence type or different sequence types; for example, BS1 uses a ZC sequence, BS2 uses a gold sequence, and BS3 uses an m sequence or a ZC sequence.

[0290] In one exemplary embodiment, the three base stations can employ different chirp signals, which can originate from a combination of OCDM basebands. For example, BS1 uses chirp 1, BS2 uses chirp 2, and BS3 uses chirp 3. These chirp signals have different modulation frequencies, which can be used to reduce mutual interference between signals. In another example, BS1, BS2, and BS3 can employ OCDM signals and use the same chirp baseband, but the OCDM transmission coefficients corresponding to different base stations are different. For example, BS1 transmits 110, BS2 transmits 101, and BS3 transmits 000.

[0291] In this embodiment, to enable the receiving device to distinguish the signals it wants to receive and avoid interference from signals transmitted by other BSs, the signal parameters may include the OCDM basis and / or coefficients of the signal to be transmitted by the transmitting device. The signal parameters can be communicated to the signal receiving device (e.g., BS / UE) via a core network element (e.g., SF), or the signal transmitting device (e.g., BS) can communicate the signal parameters to the waveform receiving device via signaling. This ensures that different BSs transmit signals orthogonally, allowing the receiving device to distinguish signals transmitted by different BSs and thus reducing interference.

[0292] In one exemplary embodiment, the signal waveform can adopt multiple pre-configured patterns in a standard protocol, with the specific waveform configuration indicated by the pattern index. The waveform configuration information, such as the pattern index, can be configured via RRC, DCI, UCI, Serial Communication Interface (SCI), or other configuration signaling; this application does not impose any limitations on this.

[0293] In one embodiment of this application, a novel waveform pattern and resource mapping method are proposed. In existing OFDM systems, transmitted RS (Resource Sequences) are mapped in the frequency domain and then transformed to the time domain via IFFT. However, IFFT transformation is generally based on a power of 2 number of points, which may not match the actual number of available Resource Elements (REs) in the configured bandwidth. Typically, the number of available REs in the configured bandwidth is not a power of 2. Similarly, for sensing services, the RS sequence length can be configured to be a non-power of 2. For example, for ZC sequences, a prime-length sequence can be used for sensing. This ZC sequence has constant modulus characteristics in both the time and frequency domains, resulting in a more ideal ambiguity function and better sensing performance. Therefore, this embodiment of the application constructs a waveform where the length of the expected transmitted sequence corresponding to the actual transmitted time-domain waveform is not a power of 2. In an exemplary embodiment, the time-domain waveform (equivalent to the aforementioned expected baseband signal) can be designed directly based on the actual transmitted data, sequence, and / or number of points.

[0294] In some embodiments, the resource mapping process can be modified based on the existing OFDM system to achieve a time-domain approximation between the waveform of the transmitted signal and the waveform of the desired baseband signal. Since the designed final sensing waveform is a time-domain representation, the desired time-domain pattern (i.e., the desired baseband signal in the time domain) must first be converted to the frequency domain, then mapped in the frequency domain, and finally converted back to the time domain. For example, the newly designed waveform includes a newly added first OFDM waveform and a newly added second OFDM waveform.

[0295] In the embodiments of this application, the newly added first OFDM waveform can also be referred to as an enhanced CP-OFDM waveform or an enhanced FFT-s-OFDM.

[0296] Figure 10 This is a schematic diagram of the resource mapping method for the first OFDM waveform added in an embodiment of this application, as shown below. Figure 10 As shown, the desired length of the non-zero power signal can be set to 100 sampling points and transmitted over a 100MHz bandwidth, assuming that the number of available REs in the 100MHz bandwidth is 3000. Specifically, the resource mapping method for the newly added first OFDM waveform can include the following steps:

[0297] First, zero-padding is performed on the non-zero power signals at 100 sampling points to obtain the desired baseband signal of a preset length. Zero-padding can be done by adding zeros at the corresponding positions of the zero power signals, based on the positions of the non-zero power signals / zero power signals. For example, the preset length can be 4096 sampling points corresponding to one symbol. This process is similar to adding a step of converting the time-domain channel to a frequency-domain channel before existing CP-OFDM frequency-domain mapping, requiring that the number of time and frequency domain points be the same.

[0298] Then, the desired baseband signal (containing 4096 elements) is transformed to the frequency domain (e.g., by performing a 4096-point FFT transform) to obtain a frequency domain sequence.

[0299] In this embodiment, if the number of elements in the frequency domain sequence exceeds the number of available REs, then the RE data outside the configured bandwidth in the frequency domain sequence also needs to be zeroed out. For example, the frequency domain sequence length obtained by the FFT transform is 4096, requiring 4096 REs, but the actual number of usable REs is only 3000. Therefore, windowing is needed to truncate the signal and discard the unusable RE resources outside the configured bandwidth. Windowing can be achieved by zeroing out the FFT points corresponding to the REs outside the bandwidth.

[0300] Finally, the frequency domain sequence is transformed to the time domain to obtain the first signal. For example, a 4096-point IFFT transform can be performed on the frequency domain sequence to obtain the first signal. The obtained time domain waveform is approximately the same as the designed desired time domain waveform, and can approximately realize the time domain waveform containing a non-zero power signal with 100 sampling points and a zero power signal with 3996 sampling points.

[0301] In an exemplary embodiment, the non-zero power signal may occupy the sampling points corresponding to 1 / 33 of the symbol duration, which is assumed to be (1 / 33)*4096, and the remainder is the duration corresponding to the zero power signal.

[0302] In an exemplary embodiment, when the transmitting device employs the enhanced CP-OFDM waveform scheme described above, it needs to indicate at least one of the following configuration information via signaling: the position, number of points, or duration corresponding to the non-zero power signal; the position, number of points, or duration corresponding to the zero-padding signal; the number of points of the FFT used when transforming to the frequency domain; the position, number of points, or RE position of the zero-placing in the frequency domain, etc. Since the position of the non-zero power signal in the desired time-domain waveform can be any position within a symbol, and can be continuous or discontinuous, and can be equally or unequally spaced, indicating the corresponding resource position and / or length via signaling before transitioning to frequency domain mapping has a significant impact on the final transmitted time-domain waveform. Similarly, the number of FFT points used during time-frequency domain conversion also affects the final transmitted time-domain waveform; therefore, the number of FFT points also needs to be indicated using an Information Element (IE).

[0303] In an exemplary embodiment, the signal transmitting device is UE1. When UE1 transmits the sensing signal, it adopts the enhanced CP-OFDM waveform scheme described above. BS1, UE2, or SF can send configuration information related to the sensing waveform to UE1. UE1 generates the sensing waveform (i.e., the first signal) to be transmitted based on the obtained configuration information. The configuration information includes at least one of the following: the position, number of points, or duration of the non-zero power signal; the position, number of points, or duration of zero-padding for the zero power signal; the number of points used for FFT when transforming to the frequency domain; and the position, number of points, or RE position of zeroing in the frequency domain.

[0304] In an exemplary embodiment, if the configuration information comes from a higher layer of UE1, such as PC-5RRC, UE1 will report the configuration information (i.e. waveform parameters) it uses to the BS, core network element (such as SF), or other UEs. The BS or SF can indirectly notify other devices of the waveform used by UE1, so that other devices can obtain the waveform parameters of UE1 for processing during interference cancellation.

[0305] In this embodiment of the application, the newly added second OFDM waveform can also be referred to as an enhanced DFT-s-OFDM waveform.

[0306] Figure 11 This is a schematic diagram of a resource mapping method for a second OFDM waveform added in an embodiment of this application, as shown below. Figure 11 As shown, the desired length of the non-zero power signal can be set to 100 sampling points and transmitted over a 100MHz bandwidth, assuming that the number of available REs in the 100MHz bandwidth is 3000. Specifically, the resource mapping method for the newly added second OFDM waveform can include the following steps:

[0307] First, zero-padding is performed on the non-zero power signals at 100 sampling points to obtain the desired baseband signal. Zero-padding can be performed based on the position of the non-zero power signals, and it is only necessary to pad the signals to the same number as the allocated REs, i.e., the length of the desired baseband signal is 3000.

[0308] Then, a 3000-point DFT operation is performed on the desired baseband signal to obtain 3000 point values, which are exactly mapped to 3000 REs in the frequency domain corresponding to the configured bandwidth, resulting in a frequency domain sequence of length 3000.

[0309] Finally, the frequency domain sequence mapped to 3000 REs is zero-padding to 4096 points, and then subjected to a 4096-point frequency-time domain transformation (such as IFFT) to obtain the waveform in the time domain, which is the first signal to be sent.

[0310] In this embodiment, the number of DFT transformation points is the same as the number of REs. For example, if the number of REs is less than 3000, then the number of DFT transformation points is also less than 3000.

[0311] In an exemplary embodiment, when employing the proposed enhanced DFT-s-OFDM waveform scheme, the transmitting device needs to indicate at least one of the following configuration information via signaling: the position, number of points, or duration corresponding to non-zero power RS; the position, number of points, or duration of zero-padding corresponding to zero power; the number of DFT points used when transforming to the frequency domain; and the position, number of points, or RE position of zero padding in the frequency domain. Since the position of the non-zero power signal in the desired baseband signal can be any position within a symbol, it can be continuous or discontinuous, equally spaced or unequally spaced. Therefore, indicating the corresponding resource position and / or length via signaling before converting the desired baseband signal to the frequency domain has a significant impact on the final transmitted time-domain waveform. Similarly, the number of DFT points used during time-frequency domain conversion also affects the final transmitted time-domain waveform; therefore, the number of DFT points also needs to be indicated using IE.

[0312] In an exemplary embodiment, when UE1 transmits a sensing signal using the proposed enhanced DFT-s-OFDM waveform scheme, BS1, UE2, or SF can send waveform-related configuration information to UE1. UE1 then generates a first signal to be transmitted based on the configuration information. The configuration information includes at least one of the following: the position, number of points, or duration corresponding to a non-zero power signal; the position, number of points, or duration of zero-padding corresponding to a zero power signal; the number of points used in DFT when transforming to the frequency domain; and the position, number of points, or RE position of zero-padding in the frequency domain. For example, if the configuration information comes from a higher layer of UE1, such as PC-5RRC, UE1 will report the waveform-related configuration information it uses to the BS, core network element (such as SF), or other UEs. The BS or SF can indirectly notify other devices of the waveform used by UE1, enabling other devices to obtain the waveform parameters of UE1 for processing during interference cancellation.

[0313] In one exemplary embodiment, the SF notifies the BS of configuration information. For a sensing service scenario where BS1 transmits and receives signals independently, BS1 and / or the SF can notify BS2 or the UE of the configuration information of the sensing signal, thereby reducing interference from BS1 received by BS2 or the UE. For a sensing service scenario where BS1 transmits and BS2 receives, BS1 and / or the SF need to notify the sensing signal receiving device BS2 of the configuration information of the sensing signal. BS2 can only perform sensing services after obtaining the configuration information of the sensing signal.

[0314] In some embodiments, the waveform used for transmitting the signal has a certain relationship with the corresponding configuration parameters and beam, RS resources, the position and length of the self-transmitting and self-receiving receiving window, and the transmit power. For example, the RS mapping of the waveform is on resources with non-zero power and zero power. Another example is the waveform parameters and mapping relationship; in another example, at least two parameters of the sensing service corresponding to the waveform, such as the transmit / receive beam, RS resources, the position and length of the self-transmitting and self-receiving receiving window, and the transmit power, have a certain relationship.

[0315] In one exemplary embodiment, a waveform pattern includes a configuration of both a receiving window 1 and a receiving window 2, wherein the two windows have different lengths. For example, a longer receiving window length is used for long-range sensing services (e.g., 20km), and a shorter receiving window length is used for short-range sensing services. This reduces the power consumption of the receiving device and avoids blind detection of signals at unnecessary times.

[0316] In one exemplary embodiment, when a service is delivered, the core network element can suggest or configure the reception window length to be used by the sensing receiving device. For example, the time-domain resource location corresponding to the zero-power signal of the sensing receiving device can be set as the reception window.

[0317] In one embodiment of this application, the resource mapping method can also adopt the resource mapping method of DFT-s-OFDM waveform.

[0318] Figure 12 This is a schematic diagram of the resource mapping method of DFT-s-OFDM waveform in one embodiment of this application, as shown below. Figure 12 As shown, assuming the number of non-zero power signal data points is 100, corresponding to 100 time-domain sampling points, the DFT-s-OFDM processing flow can include the following steps:

[0319] First, a 100-point DFT transformation is performed on the non-zero power signal to obtain 100 frequency domain data points, which are then mapped onto the bandwidth configured for the sensing signal. The number of non-zero power signal data points must be less than the number of frequency domain REs.

[0320] Secondly, zero-padding is performed on other RE positions in the bandwidth to obtain the zero-padding frequency domain signal.

[0321] Finally, a time-frequency domain transform is performed on the zero-padded frequency domain signal to obtain the first signal in the time domain. For example, the time-frequency domain transform can be performed using IFFT, where the number of IFFT points is the same as the length of the zero-padded frequency domain signal.

[0322] In this embodiment, it is desired that the baseband signal may contain only non-zero power signals, corresponding to 100 time-domain sampling points. The number of DFT points is the same as the number of time-domain sampling points corresponding to the non-zero power signals.

[0323] In the embodiments of this application, the traditional resource mapping method for CP-OFDM waveforms requires FFT, which is limited to a power of 2 for the number of sampling points, such as 2048 or 4096. In this case, if the desired baseband signal uses a ZC sequence, since the ideal ZC sequence length is a prime number, mapping the generated ZC sequence in the frequency domain and then performing an IFFT to the time domain results in inconsistent point counts, requiring zero padding. This leads to the ZC sequence in the frequency domain not being an ideal ZC sequence in the time domain, thus disrupting the constant mode property of the ZC sequence. The resource mapping method proposed in the above embodiments of this application, such as the enhanced CP-OFDM waveform resource mapping method, can solve this problem.

[0324] In an exemplary embodiment, a ZC sequence can first be generated and then directly mapped onto time-domain resources to obtain a desired time-domain sequence (equivalent to a non-zero power signal in the desired baseband signal).

[0325] In this embodiment, the length of the time-domain resource corresponding to the sequence can be a preset time period of any length, such as a slot, a symbol, or an OFDM symbol that is not an integer multiple. The granularity of the time-domain resource can be a slot, a symbol, a sampling point, or other time-domain granularity. Taking a sampling point as an example, the sequence can be mapped onto 2048 sampling points of an OFDM symbol. The smallest granularity of time-domain resources in existing OFDM systems is a symbol, and this application is not limited to this. Alternatively, a secondary mapping can be performed on the time-domain resources in existing OFDM systems, or the overall resource sampling can be performed using a non-traditional OFDM system partitioning method.

[0326] In this embodiment, in the time domain, a symbol or slot can be divided according to the sequence length, especially when the sequence length is a power of 2 or a prime number, i.e., a symbol or slot is divided into lengths of a power of 2 or a prime number, and then the resources are mapped accordingly. In this embodiment, for a number of non-power-of-2 resources, the reliability of the transmitted service data signal or reference signal has certain advantages over existing OFDM systems when transmitting and receiving sequences in the time domain.

[0327] In this embodiment, in the frequency domain, a time-frequency domain transformation is required for the signal mapped to the time domain. Since the time domain length and frequency domain length may not match, padding operations (such as zero padding) can be performed in the time domain. Alternatively, at the frequency domain granularity, the transmission and reception of service data signals or reference signals with resource unit numbers not powers of 2 can be supported. In this way, the number of resources not powers of 2 in the time domain remains the same number of resources not powers of 2 when transformed to the frequency domain, thus preventing data distortion issues in both the time and frequency domains.

[0328] In some embodiments, the length of the time-domain sequence can be a prime number and / or an odd number. For example, the largest prime number or odd number less than a power of 2 such as 32, 64, 128, 512, 1024, 2048, 4096, 8192, ...

[0329] In the embodiments of this application, when performing sensing services, the waveform of the sensing signal may differ from the time-domain symbols or sampling points of existing OFDM waveforms. For example, the number of sampling points may not be a power of 2. Replacing the sampling points of a symbol or slot with the largest prime number and / or odd number less than 2048 and / or 4096 (powers of 2) can ensure that the sequence has a good PAPR value.

[0330] In one embodiment of this application, a desired time-domain sequence (such as a ZC sequence) can be generated first. This desired time-domain sequence is then transformed to the frequency domain, and frequency domain resource mapping is performed using an existing OFDM system. During the time-frequency domain transformation, the number of points should be kept as consistent as possible; that is, the sequence generated in the time domain, after frequency domain mapping and transformation back to the time domain, can be transmitted with maximum loss of distortion. This approach avoids the time-domain non-constant modulus problem that occurs when directly mapping the ZC sequence to the frequency domain and then converting it back to the time domain.

[0331] In some embodiments, different waveform combinations may be used when transmitting signals, such as using the existing OFDM symbol resource mapping method in one time period and a new resource mapping method in another time period. For example, OFDM waveforms may be used at at least one slot, symbol, sampling point, or other time-domain granularity, and a new waveform may be used at at least another slot, symbol, sampling point, or other time-domain granularity.

[0332] In one embodiment of this application, a signal configuration method is also proposed, which can configure a sensing signal and notify / send the configuration information of the sensing signal to a core network element, base station or terminal, so as to ensure the normal transmission and reception of the sensing signal by the signal receiving device / transmitting device, and at the same time reduce the interference of the sensing signal to other devices.

[0333] In some embodiments, waveform-related configuration information may include configuration information for zero-power signals and / or non-zero-power signals. Specifically, the configuration information may include at least one of the following: the time-domain period, pulse width (i.e., time span), and duty cycle of a short sensing pulse signal; the time-domain period, pulse width, and duty cycle of a middle sensing pulse signal; the time-domain period, pulse width, and duty cycle of a long sensing pulse signal; signal continuity; sensing transmission windows in different dimensions; sensing reception windows in different dimensions; the type of the selected waveform; the power of the transmitted waveform; the modulation scheme corresponding to the transmitted waveform; and the bandwidth of the transmitted waveform. Part (BWP); priority of the transmitted waveform; RS sequence of the transmitted waveform; length of the transmitted sequence of the transmitted waveform; number of points of the transmitted waveform (time domain, frequency domain); (time, frequency, time delay, Doppler, chirp) window of the transmitted / received reference signal / waveform of the transmitted waveform; time domain position of the transmitted waveform containing RS; frequency domain position of the transmitted waveform containing RS; time delay domain position of the transmitted waveform containing RS; Doppler domain position of the transmitted waveform containing RS; The chirp domain position (for OCDM waveforms); the waveform / sequence transmitted by the reserved resources corresponding to the transmitted waveform; the time domain position of the reserved resources contained in the selected waveform corresponding to the transmitted waveform; the frequency domain position of the reserved resources contained in the selected waveform corresponding to the transmitted waveform; the time delay domain position of the reserved resources contained in the selected waveform corresponding to the transmitted waveform; the Doppler domain position of the reserved resources contained in the selected waveform corresponding to the transmitted waveform; the chirp domain position of the reserved resources contained in the selected waveform corresponding to the transmitted waveform (for OCDM waveforms); the time domain range and / or time domain granularity corresponding to the transmitted waveform; and the flag indicating whether the transmitted waveform is switched.

[0334] In one exemplary embodiment, the type of the selected waveform, contained in the waveform and / or RS configuration information, can be indicated. Standardized signaling required for configuration, corresponding to communication or sensing services, utilizes the IE (Interface Indicator) to indicate the selected waveform type. For example, through IE indication or (pre)configuration, when the UE is performing a communication service, a set of existing OFDM waveform parameters is used. When the UE switches to a sensing service, through IE indication or (pre)configuration, a set of LFM waveforms is used. The two waveform sets can be time-division or frequency-division.

[0335] In an exemplary embodiment, the waveform and / or RS configuration includes the power of the selected waveform. When a UE performs a sensing service and / or a communication service, the waveform used can be two sets with the same or different powers. For example, the UE performs a communication service in the first half of the frame and a sensing service in the second half. The waveform power transmitted for the communication service is P1, and the waveform power transmitted for the sensing service is P2. Further, when reserved resources / sequences exist, the power corresponding to the reserved resources or sequences can be P3. That is, the waveform and / or RS configuration includes the power of the selected waveform. The power of the selected waveform can be configured in multiple sets or parts, such as for different resource locations, different service types, or different targets / UEs / BSs. The existence of reserved resources or reserved sequences here can enable the sequence used by the terminal for sensing services to have better performance, for example, with a lower PAPR or Integrated Side Lobe Ratio (ISLR).

[0336] In one exemplary embodiment, the waveform and / or RS configuration includes the modulation scheme / BWP / priority of the selected waveform. When a UE performs sensing services and / or communication services, it uses at least one set of waveforms, and may use two or more sets, which may have the same or different modulation schemes / BWP / priorities. For example, when a UE performs sensing services, it is configured with one or more sets of waveforms, and different waveforms have different priorities. When selecting which waveform to transmit, the UE may prioritize the higher-priority waveform for sensing services.

[0337] In one exemplary embodiment, the waveform and / or RS configuration includes a (time, frequency) window for the transmitted / received reference signal / waveform corresponding to the selected waveform. When a UE is performing a sensing service and / or a communication service, the waveform used has at least one, and may have two or more, sets of (time, frequency) windows for the transmitted / received reference signal / waveform corresponding to the transmitted waveform.

[0338] In an exemplary embodiment, the (time, frequency) window parameters corresponding to the reference signal / waveform include at least one of the following: the length of the time window, the start point of the time window, the end point of the time window, the length of the frequency window, the start point of the frequency window, and the end point of the frequency window.

[0339] In an exemplary embodiment, the waveform and / or RS configuration includes the RS sequence / RS sequence length / time-frequency domain location / transmission power of the selected waveform. When a UE performs a sensing service and / or a communication service, the waveform used has at least one, but can also have two or more, sets of RS sequences / RS sequence length / time-frequency domain location / transmission power. For example, when a UE performs a sensing service, it uses two sets of RS sequences, which can have the same or different periods, or be triggered RS sequences, and the corresponding waveforms can be OTFS or SC-OFDM.

[0340] In one exemplary embodiment, the waveform and / or RS configuration includes the sequence / sequence length / time-frequency domain location / transmission power of the reserved resources contained in the selected waveform. When a UE performs a sensing service and / or a communication service, the waveform used has at least one, and may also have two or more, sets of reserved resource sequences / sequence lengths / time-frequency domain locations / transmission power. For example, when a UE performs a sensing service, it uses two sets of reserved resources. These two sets of sequences may be the same or different sequences, and the corresponding waveforms may be CP-OFDM or SC-OFDM.

[0341] In one exemplary embodiment, the waveform and / or RS configuration includes a flag indicating whether to switch the time domain range and / or time domain granularity corresponding to the selected waveform, and / or the corresponding transmitted waveform. When a UE performs sensing services and / or communication services, the waveform used has at least one, or possibly two or more, sets of waveforms corresponding to the time domain range and / or time domain granularity, and / or the corresponding transmitted waveform switching flag. For example, when a UE switches from a communication service to a sensing service, the corresponding waveform switching flag should be enabled. As another example, when a UE performs a sensing service, the time domain range and / or time domain granularity corresponding to the waveform used needs to be declared, especially when inconsistent with the existing NR system. These configuration parameters can also be implicitly enabled through the corresponding waveform switching flag. In one exemplary embodiment, a continuous wave is used for relatively short distances. When sensing requirements change and the target distance to be sensed becomes relatively far, a pulse wave can be selected for sensing using the sensing waveform switching flag.

[0342] In one exemplary embodiment, the waveform parameters include the number of points (time domain, frequency domain) corresponding to the transmitted waveform. For example, transmitting a ZC sequence waveform in the time domain corresponds to the length of the generated ZC sequence, which is related to the number of waveform points (the number of smallest resource granularities) in the time domain. The correspondence can be one-to-one, meaning the transmitted sequence length is the same as the number of waveform points in the time domain. Alternatively, the correspondence between the sequence length n and the number of waveform points m in the time domain can be m:n, where m and n are positive integers, and m > n or m > 0. <n。

[0343] In one exemplary embodiment, the number of time-domain points is a power of 2, such as 1024, 2048, 4096, etc. Such a number of points facilitates FFT operations. In another exemplary embodiment, the sequence length n is less than the number of waveform points m in the time domain, in which case there are some empty points on the time-domain waveform. These empty points can be used to pad with zeros, or to cyclically shift the sequence, or to send other sequence waveforms.

[0344] In one embodiment of this application, when a UE or BS performs sensing services, it needs to receive or transmit sensing waveforms. When receiving or transmitting sensing waveforms, the signal receiving device or signal transmitting device needs to know the position of the waveform within resources in various dimensions. At this time, a sensing window is used to limit or indicate the position of the transmitted and received sensing waveforms. Similarly, the existence of the sensing window is also a filtering operation when receiving sensing signals, which can eliminate noise and interference outside the sensing window. Specifically, there can be one or more windows. The window can be a windowing process applied to the transmitted waveform by the transmitting device, or a windowing process applied to the received signal by the receiving device.

[0345] In an exemplary embodiment, when configuring waveform parameters, it is necessary to specify the sensing window of the signal. The transmitting device needs to filter the waveform through the specified sensing window before transmission. For example, if the sensing window is a time-domain window, the specific location of the window needs to be specified by signaling, i.e., the maximum power limit of the window, the height of the window, etc., all need to be indicated by signaling. In existing communication standard protocols, in OFDM systems, after mapping RS to time-frequency resources, if there is no window limitation, the transmitted signal energy is distributed across the entire time-domain resource.

[0346] In this embodiment, by introducing a sensing window configuration, the sensing signal can be concentrated within a specific time domain, transforming signals in other ranges into zero-power signals. This reduces interference from signals in other time domains to other devices, allowing them to transmit their signals on the zero-power transmission waveform of this device, thus achieving time-division multiplexing and resolving signal interference issues. Furthermore, within the window's range, the transmission power of the original signal can be increased, concentrating the energy of the planned signal transmission outside the window within it, thereby facilitating long-distance signal transmission. This approach improves the performance of long-distance sensing and also increases the signal-to-noise ratio for short-distance sensing.

[0347] In some embodiments, the sensing window can be a window on different dimensions and on different bases. For example, windows can be partitioned in the time dimension, frequency domain dimension, spatial domain dimension, Doppler domain, time delay domain, chirp domain, etc., to achieve resource reuse and form time domain windows, frequency domain windows, spatial domain windows, time delay domain windows, Doppler domain windows, chirp domain windows, etc. For example, for time-frequency domain waveforms, time-frequency domain windows can be mainly considered, such as OFDM and SC-OFDM waveforms; for time-delay Doppler domain waveforms, such as OTFS, OCDM, ODDM, etc., in addition to the time-frequency domain, time delay domain windows and / or Doppler domain windows can also be mainly considered; for OCDM waveforms, in addition to the time-frequency domain, chirp domain windows can also be mainly considered.

[0348] When performing sensing or communication services, the processing order of multiple sensing windows, multiple filtering operations, and multiple domains may affect the sensing results. Therefore, the configuration information can also configure the order of operation for sensing windows of various dimensions. Specifically, the first window can be selected for processing first, followed by the second window, and so on. The first, second, and third windows can be at least one or more of the following: time domain window, frequency domain window, spatial domain window, time delay domain window, Doppler domain window, and chirp domain window.

[0349] In an exemplary embodiment, in a scenario where the target velocity differs greatly from the velocity of environmental clutter, a Doppler domain window can be used to process the target first, removing most of the interference. Thus, for cases where the angular resolution is insufficient, the Doppler domain window can be used to improve the final angular resolution granularity of the target.

[0350] In this embodiment, an information element (IE) can be set for the selected window, which contains relevant information about the selected window. Specifically, the relevant information about the window may include at least one of the following: window type, category, domain, window index, window list, window order, etc.

[0351] In one exemplary embodiment, the existing OFDM waveform time-frequency domain resource granularity is preserved, and the waveform detection granularity is achieved by adding a window. The time-domain window can be considered as the width of a short sensing pulse.

[0352] Optionally, in an exemplary embodiment, the existing OFDM waveform time-frequency domain resource granularity is retained, and the waveform detection granularity is achieved by adding a window. The time-domain window can be considered as the period of a short sensing pulse. Within this pulse period, the pulse width is also configured.

[0353] In an exemplary embodiment, it is assumed that multiple devices need to share the same resources, which is achieved through multiplexing in different dimensions. For example, orthogonal multiplexing is achieved by dividing the waveform into windows in the time, frequency, spatial, Doppler, delay, and chirp domains. Different advantages can be achieved for multiplexing in different domains. For instance, dividing the waveform in the time domain ensures sufficient bandwidth in the frequency domain, providing an advantage in distance resolution. Similarly, frequency domain multiplexing can, to some extent, ensure sufficient time domain resources, guaranteeing an advantage in speed measurement. Furthermore, for OCDM waveforms, orthogonal multiplexing by dividing the waveform into windows in the chirp domain ensures constant modulus, facilitating more accurate channel estimation and offering advantages for sensing services.

[0354] In an exemplary embodiment, considering a service scenario where n devices reuse the same resources, assuming the resource reuse method is time-division multiplexing in the time domain, with other dimensions / domains / bases being the same, and a time-domain window is divided for a duration T in the time domain, then each device can obtain a duration of T / n to send service data signals / sensing signals, i.e., the signal transmission window length is T / n. During the standardization process, at least one start point, end point, or window length representation can be introduced. For example, assuming the signal is transmitted using a pulse waveform with a duty cycle of 1 / p, then the signal pulse width (duration width) of each device can be expressed as:

[0355]

[0356] In some embodiments, the time-domain period of the signal is related to the subcarrier spacing Δf, and can be expressed as 1 / Δf. For example, if multiple devices employ Time Division Multiplexing (TDM), such as a scenario where a base station typically has three sectors, and for a symbol duration, three sectors can occupy the symbol in a time-division manner, and assuming a duty cycle of 1 / 11, the signal pulse width of each device can be expressed as:

[0357] Where Δf represents the subcarrier spacing.

[0358] In this embodiment, the signal sensing window (transmitting window or receiving window) can also be added to other domains, which will not be elaborated here. It should be noted that if the transmitted waveform does not carry the time-frequency domain, in some cases, it is necessary to perform a certain transformation and windowing operation in the transformed domain. After windowing, it is optional to switch back to the time-frequency domain.

[0359] In some embodiments, the difference between CP-OFDM and SC-OFDM waveforms lies in the fact that CP-OFDM requires the introduction of DFT transform. Therefore, when the selected waveform type is indicated by IE, the selection between CP-OFDM and SC-OFDM waveforms can be achieved by enabling the DFT transform module.

[0360] In some embodiments, to address the differences from other waveforms such as OTFS, OCDM, and ODDM, new transformation modules need to be introduced, achieved by adjusting the existing OFDM waveform process. For example, multiple modules such as preprocessing modules, post-compensation modules, Transform 1, and Transform 2 can be set up for different waveform processing methods. This application does not limit the specific module names. These modules require the introduction of new enabling IEs. These enabling IEs play an important role in waveform configuration. Among them, the transformation methods adopted by Transform 1, Transform 2, and other modules can include at least one of the following: symplectic finite transform, Heisenberg transform, Wegener transform, Fresnel transform, time-frequency domain transform, Fourier transform, and their inverse transforms.

[0361] In some embodiments, one or more signals are transmitted within a preset sensing window. This sensing window can correspond to resources of different dimensions. Different signals may share one or more dimensions of resources, or the resources of one or more dimensions may be orthogonal during multiplexing. Waveforms can be selectively transmitted within the sensing window, including waveforms with different sequences, waveforms generated in different ways, etc. Here, the dimension can be considered as the division of resource multiplexing. The waveforms transmitted / carried on different resources can also be different.

[0362] In one exemplary embodiment, LFM and / or ZC sequences can be generated in the time domain to fill short pulses for sensing, and then the time-domain waveform can be converted to the frequency domain and mapped to the RE of an OFDM symbol as a resource mapping process for DFT-s-OFDM waveforms.

[0363] In one exemplary embodiment, time-domain waveforms corresponding to the LFM and / or ZC sequences can also be generated directly in the time domain to fill the short pulses used for sensing. Alternatively, frequency domain operations are not required.

[0364] In one exemplary embodiment, a corresponding sequence / signal / waveform can be generated in the chirp domain (LMF basis domain), transformed into a waveform in the time domain, and used to fill the short pulses for sensing. Alternatively, when receiving the corresponding waveform, it can be received in the time domain, and after reception, the transmitted sequence / signal / waveform in the corresponding chirp domain can be obtained through transformation.

[0365] In one exemplary embodiment, a corresponding sequence / signal / waveform can be generated in the Delay-Doppler (DD) domain, transformed into a waveform in the time domain, and used to fill the short pulses for sensing. Alternatively, when receiving the corresponding waveform, reception is performed in the time domain, and after reception, the transmitted sequence / signal / waveform in the corresponding DD domain is obtained through transformation.

[0366] Figure 13 This is a schematic diagram of the transmit and receive block diagrams of OFDM and OTFS waveforms in one embodiment of this application, as shown below. Figure 13 As shown, the OTFS waveform is based on the traditional OFDM waveform, with the addition of a set of OTFS transform and inverse transform processing modules (the modules within the dashed boxes). The OTFS transform can be viewed as a combination of FFT and IFFT.

[0367] In this embodiment, an IE can be added to the signal configuration information to indicate whether the OTFS conversion module is enabled. This IE can be used to indicate the switching of waveform type between OFDM waveform and OTFS waveform.

[0368] In this application embodiment, the configuration information in the above embodiments can be transmitted between core network elements, base stations, and terminals.

[0369] In some embodiments, the BS can send configuration information to core network elements, such as the SF.

[0370] In one example, the BS acts as a sensing transmitter. The BS can send configuration information of the sensing signals to the SF. In multi-site joint detection, the SF obtains the configuration information sent by each BS, which is more conducive to centralized control by the SF. For example, for signals with the same time and frequency, the SF can utilize the spatial dimension for configuration, ensuring that the signals from each BS are orthogonal in the spatial domain, avoiding interference. For example, the configuration information includes at least the duration of the non-zero power signal / zero power signal, or the sensing window parameters corresponding to the non-zero power signal. The sensing window parameters include at least one of the following: the length of the time window, the start point of the time window, the end point of the time window, the length of the frequency window, the start point of the frequency window, and the end point of the frequency window. Furthermore, the SF can send the configuration information after resource control (or reallocation) to the UE and / or the BS, etc.

[0371] In one example, the BS acts as a sensing transmitter, and can send the configuration information of the sensing signal to the SF. Furthermore, the SF can directly send the acquired configuration information to the UE and / or the BS, where the UE and / or the BS act as sensing receivers, obtaining the configuration information of the sensing signal through the core network.

[0372] In some embodiments, the UE can send configuration information to core network elements, such as SF.

[0373] In one example, the UE acts as a sensing transmitter, sending configuration information of the sensing signal to the SF. The SF can then send this configuration information to the UE and / or BS. The UE and BS can act as sensing receivers, obtaining the configuration information of the sensing signal through the core network. Alternatively, the UE and BS can also be other devices that do not participate in the transmission and reception of the sensing signal, using the configuration information to avoid interference from the sensing signal on their own signal transmission and reception.

[0374] In some embodiments, the sensing transmitting device may directly or indirectly notify the sensing receiving device of the configuration information of the sensing signal, and the sensing transmitting device may also explicitly or implicitly notify the sensing receiving device of the configuration information of the sensing signal.

[0375] For example, the BS can tell the BS2 the configuration information of the sensing signal through the Xn interface.

[0376] For example, the BS can inform the UE of the configuration information of the sensing signal through the Uu interface; for example, the configuration information can be carried through a DCI message.

[0377] For example, the UE can inform the BS of the configuration information of the sensed signal through the Uu interface; for example, this configuration message can be carried through a UCI message. Here, the BS does not have to be the primary cell BS where the UE is located.

[0378] Optionally, the UE can inform the receiving UE of the configuration information of the sensing signal through the SL interface.

[0379] In some embodiments, the BS, UE, and / or SF can notify the location of reserved resources and the configuration information of the sensed signals in the reserved resources. The configuration information can be notified between any two of the BS, UE, and / or SF.

[0380] In some embodiments, the waveform used for sensing the signal is a sequence based on a reference signal. In this case, the configuration information includes the sequence length, and the configuration information can be sent / recommended by the SF to the BS or UE. For example, RSPos can be used to represent the time-domain / frequency-domain / sampling point position / position range corresponding to the reference signal.

[0381] In one example, the BS can notify the UE of the signal configuration information (including RSPos) via DCI or UCI. Alternatively, the BS can send the configuration information (including RSPos) to the core network element SF. The SF can then send the configuration information (including RSPos) to other UEs / BSs; the SF can also adjust the collected configuration information and send the adjusted configuration information to the UE / BS.

[0382] In one example, the UE can also tell the UE the signal configuration information (including RSPos) through DCI or UCI; the BS sends the RS configuration (including RSPos) to the core network element SF; the SF can then send the configuration information (including RSPos) to other UEs; the SF can also schedule the collected configuration information and send the scheduled configuration information to the UE.

[0383] In an exemplary embodiment, the selection and configuration of signal / waveform parameters are related to the measurements or estimations performed by the device, UE, BS, or core network element. For example, the UE performs sensing measurements and reports them to the core network element SF. The SF analyzes the data reported by one or more UEs and estimates that the perceived target may have distance ambiguity. In this case, the SF can recommend waveform selection or waveform parameter configuration to the UE, allowing the UE to use the new waveform or parameters for sensing, thereby obtaining more accurate sensing results.

[0384] In one exemplary embodiment, the UE may only have the capability to support continuous waves, but not the capability to transmit pulse waves. In another exemplary embodiment, the UE may transmit a long sensing pulse, but not a short sensing pulse. In this case, the configuration information of the sensing signal can be set and adjusted according to the UE's own capabilities.

[0385] In one exemplary embodiment, the UE capabilities corresponding to the waveform parameters involved in the configuration information may be related to the operating model, which includes, but is not limited to, the UE's full-duplex awareness capability, half-duplex awareness capability, and simplex awareness capability. For example, if the UE supports continuous wave, then the UE needs to have full-duplex awareness capability.

[0386] In this embodiment, the waveform used in the sensing service or communication service is selectable. For different waveform selections, a new IE can be introduced in the configuration information for indication.

[0387] In one embodiment of this application, the configuration information incorporates parameters related to the OTFS waveform or OCDM waveform.

[0388] In one embodiment of this application, a DFT-s-OFDM waveform is introduced in downlink communication or sensing services.

[0389] In some embodiments, when selecting a waveform, the BS can choose from waveforms such as CP-OFDM, DFT-s-OFDM, OTFS, and OCDM. For different waveform selections, a new IE can be introduced in the configuration information to indicate the choice. A specific example is shown below.

[0390] Figure 14 This is a schematic diagram of the processing module for CP-OFDM waveforms and DFT-s-OFDM waveforms in one embodiment of this application, as shown below. Figure 14 As shown, the CP-OFDM waveform adds a conversion precoding module compared to the DFT-s-OFDM waveform.

[0391] In this embodiment, the CP-OFDM or DFT-s-OFDM waveform can be applied to the uplink direction or the downlink direction.

[0392] In this embodiment, by introducing DFT-s-OFDM waveforms in the downlink direction, the waveform requirements of sensing services for low PAPR can be better met, and sensing performance can be enhanced to a certain extent.

[0393] In other embodiments, in addition to CP-OFDM and DFT-s-OFDM, other waveforms can be selected. This waveform selection may correspond to the selection of one or more preprocessing models or post-compensation modules. For example, the processing module also requires signaling instructions.

[0394] In some embodiments, whether to use CP-OFDM, DFT-s-OFDM or other waveforms, in addition to msg3, can be configured by specifying RRC parameters.

[0395] In one exemplary embodiment, the RACH signaling may carry waveform-related configuration information, the specific content of which is as follows:

[0396]

[0397]

[0398] In this embodiment, waveform selection can be achieved by adding enable information or selection ranges of various transform precoding modules of msg3 to the RACH signaling, including but not limited to: msg3-transformPrecoding, msg3-transformPrecoding_2, msg3-transformPrecoding_3, etc. Here, msg3-transformPrecoding_3 can indicate a combination of multiple waveforms, such as {waveform1,waveform2,...}, representing the waveform selection range.

[0399] In this embodiment, the transform precoding module indicated in the RACH signaling can include not only the DFT precoding module, which selects between DFT-s-OFDM and CP-OFDM by indicating whether the DFT precoding module is enabled, but also other precoding modules to select at least one of the following waveforms: LMF, FMCW, OFDM, a newly added first OFDM, a newly added second OFDM, DFT-s-OFDM, OCDM, ODDM, OTFS, FBMC, GFDM, UF-OFDM, UFMC, F-OFDM, MC-OFDM, and SC-OFDM. This embodiment improves the selection range of waveforms and waveform modulation schemes, and enhances the performance of sensing and communication services.

[0400] In an exemplary embodiment, the PUSCH signaling may carry waveform-related configuration information, the specific content of which is as follows:

[0401]

[0402]

[0403] In this embodiment, waveform selection can be achieved by adding enable information or selection range of each transform precoding module in the PUSCH signaling, including but not limited to: transformPrecoder, transformPrecoding_2, transformPrecoding_3, transformPrecoding_4_wx, etc.

[0404] In one exemplary embodiment, the transform precoding module indicated in the PUSCH signaling may include not only a DFT precoding module, which selects between DFT-s-OFDM and CP-OFDM by indicating whether the DFT precoding module is enabled, but also other precoding modules to select at least one of the following waveforms: LMF, FMCW, OFDM, a newly added first OFDM, a newly added second OFDM, DFT-s-OFDM, OCDM, ODDM, OTFS, FBMC, GFDM, UF-OFDM, UFMC, F-OFDM, MC-OFDM, and SC-OFDM. The embodiments of this application can improve the selection range of waveforms and waveform modulation schemes, and can improve the performance of sensing services and communication services.

[0405] Furthermore, enable information or selection ranges for various transformation precoding modules can be added to the downlink PDSCH signaling to achieve waveform selection, including but not limited to: transformPrecoder, transformPrecoding_2, transformPrecoding_3, transformPrecoding_4_wx, etc. The newly added configuration information can be referenced from the configuration information of the PUSCH signaling mentioned above, and will not be repeated here. In the prior art, PDSCH signaling only supports CP-OFDM waveforms, so the configuration information of PDSCH signaling does not include waveform-related indication information. The embodiments of this application can provide PDSCH signaling with more waveforms and waveform modulation schemes, making the configuration method more flexible, and also improving the performance of sensing services and communication services.

[0406] In one exemplary embodiment, the Configuration Grant (CG) signaling may carry waveform-related configuration information, the specific content of which is as follows:

[0407]

[0408]

[0409]

[0410] In this embodiment, waveform selection can be achieved by adding enable information or selection range of each transform precoding module in the CG signaling, including but not limited to: transformPrecoder, transformPrecoding_2, transformPrecoding_3, transformPrecoding_4_wx, etc.

[0411] In an exemplary embodiment, waveform selection can also be achieved by adding enable information or selection ranges for each transform precoding module to the waveform configuration information of the sidelink (SL) signal. In the prior art, the SL signal of a UE in LTE only supports DFT-s-OFDM waveforms, while the SL signal of a UE in NR only supports CP-OFDM; neither supports selection of different waveforms. Through the embodiments of this application, by adding indication information for enabling or disabling transform precoding modules to the configuration information, selection of different waveforms can be achieved, improving the flexibility of signal waveform configuration and also enhancing the performance of sensing and communication services.

[0412] In the embodiments of this application, the various types of signals / signaling described above can support at least one of the following waveforms: LMF, FMCW, OFDM, newly added first OFDM, newly added second OFDM, CP-OFDM, DFT-s-OFDM, OCDM, ODDM, OTFS, FBMC, GFDM, UF-OFDM, UFMC, F-OFDM, MC-OFDM, and SC-OFDM. Switching between waveforms can be achieved by indicating whether the corresponding transform precoding module is enabled. In one example, taking the switch between DFT-s-OFDM and CP-OFDM as an example, the DFT-s-OFDM waveform can be selected by enabling the DFT precoding module, and the CP-OFDM waveform can be selected by disabling the DFT precoding module. However, this application is not limited to this; other waveforms can also be configured with corresponding precoding modules, which will not be elaborated here.

[0413] In one exemplary embodiment, the LMF, SF, or other core network elements may recommend or configure the waveforms of the downlink and / or uplink signals to be selected by the BS. For example, the SF may recommend or configure the base station to use DFT-s-OFDM waveforms for sensing.

[0414] In one embodiment of this application, a perception process for perception services is also provided.

[0415] When performing random access or establishing uplink synchronization, the RACH sequence can be used for initial sensing. The RACH RRC configuration signaling needs to indicate whether initial sensing should be used in the RACH. Since the bandwidth and time period of initial access are smaller compared to the bandwidth and time required for normal sensing accuracy, initial sensing can only serve as a reference for selecting normal sensing waveforms and / or resource configurations.

[0416] Figure 15 This is a schematic diagram of the overall perception process in one embodiment of this application, as shown below. Figure 15 As shown, the overall perception process for perception services may include the following steps:

[0417] Step S1, initial perception when UE accesses BS;

[0418] Step S2, normal perception.

[0419] In one example, if the target is found to be far away during the initial RACH sensing, a pulse wave can be selected for sensing during the normal sensing process to increase the sensing distance.

[0420] In another example, during the initial RACH sensing, if the Doppler of the target is found to be large, then more intensive temporal resources are needed for sensing during the normal sensing process to obtain sensing results that meet the sensing accuracy requirements.

[0421] In this embodiment, when the UE is randomly accessing the network, it can enable initial awareness by configuration, and selectively report and / or measure and report (channel) information. This information can be the BS that the UE accesses, or information from other BSs that are measured and obtained.

[0422] In an exemplary embodiment, the UE accesses BS1, but the UE also receives information sent by BS2 and BS3. When the UE reports, it can report the information sent by BS1 as measured, or the information sent by BS2 and / or BS3 as measured.

[0423] In an exemplary embodiment, for connection-based random access, after access, the UE and / or BS can send information from multiple BSs to the core network element, where the core network element acquires the initial perception results.

[0424] In an exemplary embodiment, for connection-based random access, after access, BS1 can receive information from multiple BSs to acquire initial sensing results.

[0425] Through the embodiments of this application, the sensing signals in the normal sensing process can be configured according to the preliminary sensing results, and the resources occupied by the sensing services can be allocated according to the actual situation to improve sensing performance.

[0426] Figure 16 This is a schematic diagram illustrating the resource mapping method of the newly added first OFDM waveform in an exemplary embodiment of this application. The newly added first OFDM waveform can be an FFT-S-OFDM waveform based on an LFM pulse signal. This waveform can generate LFM RS in the time domain. Figure 16 As shown, the resource mapping method for this waveform can include the following process:

[0427] In an OFDM symbol, a 128-bit LFM RS is generated in the time domain. Padding the LFM RS with zeros yields a 4096-bit baseband signal. Performing a 4096-FFT on the baseband signal produces a 4096-bit frequency domain signal (corresponding to 4096 resource elements, REs). Since the number of REs (3312) for a 100MHz bandwidth is less than 4096, the ends of the frequency domain signal (outside the 100MHz bandwidth) need to be zeroed. Then, a 4096-IFFT is performed on the zeroed-out frequency domain signal, and the resulting time domain signal is mapped into an OFDM symbol.

[0428] This application does not impose restrictions on the RS signal length, the number of zeros padded, or the number of FFT points, and these can be flexibly adjusted according to actual needs.

[0429] Figure 17 This is a schematic diagram of the simulation results of the first OFDM waveform added in an exemplary embodiment of this application. For example... Figure 17 The image shows the simulation results of the FFT-S-OFDM waveform based on the LFM pulse signal. The left side shows the time-domain distribution of the FFT-S-OFDM waveform, i.e., the received signal. The right side shows the final detection result of the FFT-S-OFDM waveform at the receiver, i.e., the matched filter output, assuming a single-tap channel.

[0430] Therefore, the FFT-S-OFDM scheme in this embodiment provides excellent sensing and detection performance and achieves a very low PAPR. Furthermore, compared with the DFT-S-OFDM scheme, the FFT-S-OFDM scheme can also provide approximately 0.5 dB PAPR gain, thereby increasing the coverage of sensing services.

[0431] Figure 18 This is a schematic diagram illustrating the resource mapping method of the newly added second OFDM waveform in an exemplary embodiment of this application. The newly added second OFDM waveform can be a DFT-S-OFDM waveform based on an LFM pulse signal. This waveform can generate LFM RS in the time domain. Figure 18 As shown, the resource mapping method for this waveform can include the following process:

[0432] A 100-bit LFM RS is generated in the time domain within an OFDM symbol. Since the number of resource elements (REs) corresponding to a 100MHz bandwidth is 3312, zeros are padded to the end of the LFM RS to obtain a 3312-bit baseband signal. A 3312-DFT operation is performed on the baseband signal to obtain a 3312-bit frequency domain signal (corresponding to 3312 REs). Since the subsequent IFFT has 4096 points, zeros are padded to both ends of the 3312-bit frequency domain signal to obtain a 4096-bit frequency domain signal. Then, a 4096-IFFT is performed on it, and the transformed time domain signal is mapped into an OFDM symbol.

[0433] Figure 19 This is a schematic diagram of the simulation results of the second OFDM waveform added in an exemplary embodiment of this application. For example... Figure 19 The image shows the simulation results of the DFT-S-OFDM waveform based on the LFM pulse signal. The left side shows the time-domain distribution of the DFT-S-OFDM waveform, i.e., the received signal. The right side shows the final detection result of the DFT-S-OFDM waveform at the receiver, i.e., the matched filter output, assuming a single-tap channel.

[0434] Therefore, the DFT-S-OFDM scheme in this application embodiment can provide good sensing and detection performance and achieve a very low PAPR.

[0435] 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 this application, 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 this application.

[0436] Embodiments of this application also provide a terminal for implementing the steps in any of the above-described signal transmission or signal reception methods.

[0437] Embodiments of this application also provide a base station for implementing the steps in any of the above-described signal transmission or signal reception methods.

[0438] Embodiments of this application also provide a core network element, which is used to implement the steps in any of the above-described signal configuration methods.

[0439] Embodiments of this application also provide a computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the steps in any of the above method embodiments.

[0440] 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 USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0441] Embodiments of this application 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.

[0442] 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.

[0443] Embodiments of this application also provide a computer program product, including a computer program that, when executed by a processor, implements the steps in any of the above method embodiments.

[0444] 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.

[0445] Obviously, those skilled in the art should understand that the modules or steps of this application 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 presented here, 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, this application is not limited to any particular combination of hardware and software.

[0446] The above description is merely an exemplary embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. A signal transmission method, characterized in that, The method includes: Determine the configuration information of the first signal; The first signal is sent according to the configuration information, wherein the first signal includes a non-zero power signal and a zero power signal, wherein the non-zero power signal occupies a first part of the time domain resources in the time domain period of the first signal, and the zero power signal occupies a second part of the time domain resources in the time domain period, wherein the time length corresponding to the second part of the time domain resources is greater than or equal to zero.

2. The method according to claim 1, characterized in that, The first signal is a sensing signal; or, The non-zero power signal in the first signal is the sensing signal; or, The non-zero power signal and the zero power signal in the first signal are the sensing signals.

3. The method according to claim 1, characterized in that, The first part of the time domain resources or the second part of the time domain resources includes at least one of the following: a time domain symbol, a time slot, multiple time slots, and a preset time period, wherein the preset time period is not equal to an integer multiple of the time domain symbol, and the preset time period is greater than or less than the time domain symbol.

4. The method according to claim 1, characterized in that, The time-domain period includes the sum of the time lengths corresponding to the first part of the time-domain resources, the second part of the time-domain resources, and the third part of the time-domain resources, wherein the time length corresponding to the third part of the time-domain resources is greater than or equal to zero, and the sum of the time lengths corresponding to the first part of the time-domain resources and the second part of the time-domain resources is the time width of the first signal.

5. The method according to claim 1, characterized in that, The non-zero power signal is either a reference signal or a service data signal.

6. The method according to claim 1, characterized in that, The configuration information includes at least one of the following: The position of the non-zero power signal and / or the zero power signal in the first signal; The number of sampling points or equal division points occupied by the non-zero power signal and / or the zero power signal in the time domain period; The sequence used by the non-zero power signal and / or the zero power signal; The reference signal used for the non-zero power signal and / or the zero power signal; The waveform carrying the non-zero power signal and / or the zero power signal.

7. The method according to claim 6, characterized in that, The position of the non-zero power signal and / or the zero power signal in the first signal includes at least one of the following: The starting point of the first portion of time-domain resources and / or the second portion of time-domain resources in the time-domain period or time width; The endpoint of the first portion of time-domain resources and / or the second portion of time-domain resources in the time-domain period or time width; The length of the first portion of time-domain resources and / or the second portion of time-domain resources in the time-domain period or time width; The continuity of the first portion of time-domain resources and / or the second portion of time-domain resources within the time-domain period or time-width.

8. The method according to claim 6, characterized in that, The sequence includes at least one of the following: Pseudo-random sequences, low peak-to-average power ratio sequences, Zadoff-Chu sequences, Gold sequences, m-sequences, Walsh sequences, Barker codes, and Hadamard sequences.

9. The method according to claim 6, characterized in that, The reference signal includes at least one of the following: Positioning Reference Signal (PRS), Cell-Specific Reference Signal (CRS), Channel State Information Reference Signal (CSI-RS), Detection Reference Signal (SRS), Phase Tracking Reference Signal (PTRS), Demodulation Reference Signal (DMRS), and Sidechain Positioning Reference Signal (SL-PRS).

10. The method according to claim 6, characterized in that, The waveform includes at least one of the following: Linear frequency modulation (LMF); Frequency Modulated Continuous Wave (FMCW) Orthogonal Frequency Division Multiplexing (OFDM) The newly added first OFDM; The newly added second OFDM; Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM); Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM); Orthogonal linear frequency modulation wavelength division multiplexing (OCDM); Orthogonal Delayed Doppler Diversity Multiplexing (ODDM); Orthogonal Time-Frequency Space-Time Multiplexing (OTFS); Filter Bank Multicarrier FBMC; Generalized Frequency Division Multiple Access (GFDM); Universal Filtering Orthogonal Frequency Division Multiplexing (UF-OFDM); Universal Filtering Multicarrier UFMC; Filtered orthogonal frequency division multiplexing (F-OFDM); Multi-carrier orthogonal frequency division multiplexing (MC-OFDM); Single-carrier orthogonal frequency division multiplexing (SC-OFDM).

11. The method according to claim 1, characterized in that, The first signal includes at least one of the following: signals transmitted between physical network devices, sidelink signals, uplink signals, and downlink signals.

12. The method according to claim 1, characterized in that, Sending the first signal according to the configuration information includes: The desired baseband signal of the first signal is generated according to the configuration information, wherein the desired baseband signal is a sequence or a continuous signal; The desired baseband signal is preprocessed according to the configuration information to obtain the target frequency domain sequence; The target frequency domain sequence is mapped to time domain resources using either Inverse Fast Fourier Transform (IFFT) or Orthogonal Frequency Division Multiplexing (OFDM) baseband signal generation methods to obtain the first signal. Send the first signal.

13. The method according to claim 12, characterized in that, The step of generating the desired baseband signal of the first signal based on the configuration information includes one of the following: Generate a non-zero power sequence or a non-zero power continuous signal corresponding to the non-zero power signal according to the configuration information, and pad the non-zero power sequence or the non-zero power continuous signal with zeros according to the configuration information to obtain the desired baseband signal; The non-zero power sequence or non-zero power continuous signal corresponding to the non-zero power signal is generated according to the configuration information, and the zero power sequence or zero power continuous signal corresponding to the zero power signal is generated according to the configuration information to obtain the desired baseband signal; The non-zero power sequence and the zero power sequence are generated according to the configuration information, and zero-padding is performed on the non-zero power sequence and the zero power sequence according to the configuration information to obtain the desired baseband signal; or, The non-zero power continuous signal and the zero power continuous signal are generated according to the configuration information, and zero-padding is performed on the non-zero power continuous signal and the zero power continuous signal according to the configuration information to obtain the desired baseband signal.

14. The method according to claim 12, characterized in that, The step of preprocessing the desired baseband signal according to the configuration information to obtain the target frequency domain sequence includes: The desired baseband signal is mapped to the frequency domain based on the configuration information to obtain the target frequency domain sequence.

15. The method according to claim 14, characterized in that, When the waveform of the sensed signal is a newly added first OFDM, the step of mapping the desired baseband signal to the frequency domain according to the configuration information to obtain the target frequency domain sequence includes: The desired baseband signal is subjected to a Fast Fourier Transform (FFT) with a preset number of points to obtain the target frequency domain sequence, wherein the length of the desired baseband signal and the length of the target frequency domain sequence are equal to the preset number of points of the FFT.

16. The method according to claim 15, characterized in that, When the waveform of the sensed signal is a newly added first OFDM, the step of mapping the desired baseband signal to the frequency domain according to the configuration information to obtain the target frequency domain sequence further includes: The bandwidth of the first signal is determined based on the configuration information; In the target frequency domain sequence, the elements at the FFT point positions corresponding to the frequency domain resources outside the bandwidth are set to zero to obtain a new target frequency domain sequence.

17. The method according to claim 14, characterized in that, When the waveform of the sensed signal is a newly added second OFDM, the step of mapping the desired baseband signal to the frequency domain according to the configuration information to obtain the target frequency domain sequence includes: The desired baseband signal is subjected to a Discrete Fourier Transform (DFT) to obtain an intermediate frequency domain sequence, wherein the length of the desired baseband signal, the number of points of the DFT transform, and the length of the intermediate frequency domain sequence are equal to the number of frequency domain resource units carrying the first signal. The target frequency domain sequence is obtained by padding all positions except the intermediate frequency domain sequence with zeros, wherein each element in the intermediate frequency domain sequence corresponds to one frequency domain resource unit, and the length of the target frequency domain sequence is greater than the length of the intermediate frequency domain sequence.

18. The method according to claim 1, characterized in that, The resource multiplexing of the non-zero power signal in the first signal with the non-zero power signal of the associated second or third signal, wherein the resource multiplexing includes at least one of the following: time division multiplexing, frequency division multiplexing, sequence division multiplexing, code division multiplexing, spatial domain division multiplexing, and chirp domain division multiplexing.

19. The method according to claim 1, characterized in that, The configuration information includes a perception window for the first signal, wherein the perception window is used to indicate or limit the location of the resources occupied by the first signal in the reserved resources.

20. The method according to claim 19, characterized in that, The sensing window includes at least one of the following: time-domain sensing window, frequency-domain sensing window, spatial-domain sensing window, Doppler-domain sensing window, time-delay-domain sensing window, and chirp-domain sensing window.

21. The method according to claim 1, characterized in that, The configuration information for determining the first signal includes one of the following: Determine the preset configuration information; The pre-configured configuration information is determined, wherein the configuration information is obtained from a core network element, a first terminal, or a first base station; Select one set of configuration information from a preset set of configuration information; Receive the configuration information sent by the core network element; Receive the configuration information sent by the first terminal; Receive the configuration information sent by the first base station; Receive auxiliary information related to the configuration information sent by the core network element, and determine the configuration information based on the auxiliary information; The system receives recommendation information related to the configuration information sent by the core network element, and determines the configuration information based on the recommendation information.

22. The method according to claim 21, characterized in that, The method also includes one of the following: Before receiving the configuration information sent by the core network element, a request message for the configuration information is sent to the core network element; Before receiving the configuration information sent by the first terminal, a request message for the configuration information is sent to the first terminal; Before receiving the configuration information sent by the first base station, a request message for the configuration information is sent to the first base station; Before receiving auxiliary information related to the configuration information sent by the core network element, a request message for the auxiliary information is sent to the core network element; Before receiving the recommendation information related to the configuration information sent by the core network element, a request message for the recommendation information is sent to the core network element.

23. The method according to claim 1, characterized in that, After determining the configuration information of the first signal, the method further includes at least one of the following: Send the configuration information to the core network elements; Send the configuration information to the second terminal; The configuration information is sent to the second base station.

24. The method according to claim 23, characterized in that, The method also includes one of the following: Before sending the configuration information to the core network element, receive a request message for the configuration information sent by the core network element; Before sending the configuration information to the second terminal, receive a request message for the configuration information sent by the second terminal; Before sending the configuration information to the second base station, a request message for the configuration information sent by the second base station is received.

25. The method according to claim 1, characterized in that, The configuration information is carried in at least one of the following messages: Uplink control signaling (UCI); Downlink control signaling (DCI); Random Access Channel (RACH) messages; Physical uplink shared channel (PUSCH) messages; Base station positioning protocol messages; Terminal location protocol message; Sidelink Location Protocol (SLP) messages; Sensing protocol messages; Configure authorized CG messages; Radio Resource Control (RRC) signaling.

26. A signal receiving method, characterized in that, The method includes: Determine the configuration information of the first signal; The first signal is received according to the configuration information, wherein the first signal includes a non-zero power signal and a zero power signal, wherein the non-zero power signal occupies a first part of the time domain resources in the time domain period of the first signal, and the zero power signal occupies a second part of the time domain resources in the time domain period, wherein the time length corresponding to the second part of the time domain resources is greater than or equal to zero.

27. The method according to claim 26, characterized in that, The first signal is a sensing signal; or, The non-zero power signal in the first signal is the sensing signal; or, The non-zero power signal and the zero power signal in the first signal are the sensing signals.

28. The method according to claim 26, characterized in that, The first part of the time domain resources or the second part of the time domain resources includes at least one of the following: a time domain symbol, a time slot, multiple time slots, and a preset time period, wherein the preset time period is not equal to an integer multiple of the time domain symbol, and the preset time period is greater than or less than the time domain symbol.

29. The method according to claim 26, characterized in that, The time-domain period includes the sum of the time lengths corresponding to the first part of the time-domain resources, the second part of the time-domain resources, and the third part of the time-domain resources, wherein the time length corresponding to the third part of the time-domain resources is greater than or equal to zero, and the sum of the time lengths corresponding to the first part of the time-domain resources and the second part of the time-domain resources is the time width of the first signal.

30. The method according to claim 26, characterized in that, The non-zero power signal is either a reference signal or a service data signal.

31. The method according to claim 26, characterized in that, The configuration information includes at least one of the following: The position of the non-zero power signal and / or the zero power signal in the first signal; The number of sampling points or equal division points occupied by the non-zero power signal and / or the zero power signal in the time domain period; The sequence used by the non-zero power signal and / or the zero power signal; The reference signal used for the non-zero power signal and / or the zero power signal; The waveform carrying the non-zero power signal and / or the zero power signal.

32. The method according to claim 26, characterized in that, The configuration information includes a perception window for the first signal, wherein the perception window is used to indicate or limit the location of the communication resources occupied by the first signal in the reserved resources.

33. The method according to claim 32, characterized in that, The sensing window includes at least one of the following: time-domain sensing window, frequency-domain sensing window, spatial-domain sensing window, Doppler-domain sensing window, time-delay-domain sensing window, and chirp-domain sensing window.

34. The method according to claim 26, characterized in that, The configuration information for determining the first signal includes one of the following: Determine the preset configuration information; The pre-configured configuration information is determined, wherein the configuration information is obtained from a core network element, a first terminal, or a first base station; Select one set of configuration information from a preset set of configuration information; Receive the configuration information sent by the core network element; Receive the configuration information sent by the first terminal; Receive the configuration information sent by the first base station; Receive auxiliary information related to the configuration information sent by the core network element, and determine the configuration information based on the auxiliary information; The system receives recommendation information related to the configuration information sent by the core network element, and determines the configuration information based on the recommendation information.

35. The method according to claim 34, characterized in that, The method also includes one of the following: Before receiving the configuration information sent by the core network element, a request message for the configuration information is sent to the core network element; Before receiving the configuration information sent by the first terminal, a request message for the configuration information is sent to the first terminal; Before receiving the configuration information sent by the first base station, a request message for the configuration information is sent to the first base station; Before receiving auxiliary information related to the configuration information sent by the core network element, a request message for the auxiliary information is sent to the core network element; Before receiving the recommendation information related to the configuration information sent by the core network element, a request message for the recommendation information is sent to the core network element.

36. The method according to claim 26, characterized in that, After determining the configuration information of the first signal, the method further includes at least one of the following: Send the configuration information to the core network elements; Send the configuration information to the second terminal; The configuration information is sent to the second base station.

37. The method according to claim 36, characterized in that, The method also includes one of the following: Before sending the configuration information to the core network element, receive a request message for the configuration information sent by the core network element; Before sending the configuration information to the second terminal, receive a request message for the configuration information sent by the second terminal; Before sending the configuration information to the second base station, a request message for the configuration information sent by the second base station is received.

38. The method according to claim 26, characterized in that, The configuration information is carried in at least one of the following messages: Uplink control signaling; Downlink control signaling; Random Access Channel (RACH) messages; Physical uplink shared channel (PUSCH) messages; Base station positioning protocol messages; Terminal location protocol message; Sidelink Location Protocol (SLP) messages; Sensing protocol messages; Configure authorized CG messages; Radio Resource Control (RRC) signaling.

39. A signal configuration method, characterized in that, The method includes: The configuration information of the first signal is determined, wherein the first signal includes a non-zero power signal and a zero power signal, wherein the non-zero power signal occupies a first part of the time domain resources in the time domain period of the first signal, and the zero power signal occupies a second part of the time domain resources in the time domain period, wherein the time length corresponding to the second part of the time domain resources is greater than or equal to zero. The configuration information of the first signal is sent to the first device.

40. The method according to claim 39, characterized in that, The first device includes a base station or a terminal.

41. The method according to claim 39, characterized in that, The configuration information for sending the first signal to the first device includes: Send auxiliary information or recommendation information related to the configuration information to the first device so that the first device can determine the configuration information of the first signal based on the auxiliary information or the recommendation information.

42. The method according to claim 39, characterized in that, Before sending the configuration information of the first signal to the first device, the method further includes: The system receives a request message for the configuration information sent by the first device, wherein the request message for the configuration information is used to request the core network element to provide feedback on the configuration information.

43. The method according to claim 39, characterized in that, The configuration information for determining the first signal includes at least one of the following: Determine the preset configuration information; The pre-configured configuration information is determined, wherein the configuration information is obtained from the second device; Select one set of configuration information from a preset set of configuration information; Receive the configuration information sent by the second device.

44. A terminal, characterized in that, The terminal is used to implement the steps of the method described in any one of claims 1 to 25, or to implement the steps of the method described in any one of claims 26 to 38.

45. A base station, characterized in that, The base station is used to implement the steps of the method described in any one of claims 1 to 25, or to implement the steps of the method described in any one of claims 26 to 38.

46. ​​A core network element, characterized in that, The core network element is used to implement the steps of the method described in any one of claims 39 to 43.

47. A computer-readable storage medium, characterized in that, The 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 43.

48. 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 43.

49. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method described in any one of claims 1 to 43.

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