Beam sending method, information sending method, sensing device and sensing system

Abstract

The invention relates to a beam sending method, an information sending method, a sensing device and a sensing system. The beam sending method comprises the following steps: receiving first information, wherein the first information indicates sensed granularity; and sending the sensing reference signal through beam forming based on the first information. According to the embodiment of the invention, the sensing reference signal is sent through beam forming based on the first information, so that the sensing reference signal can be sent by using a corresponding wide beam or narrow beam according to the sensing granularity indicated by the first information, the sensing granularity and precision can be flexibly and dynamically adjusted, and the sensing accuracy is improved. And the construction of the perception map and / or the construction of a high-precision perception map can be quickly completed.

Description

Beam transmission method, information transmission method, sensing device and sensing system Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a beam sending method, an information sending method, a sensing device, and a sensing system. Background Art

[0002] In wireless sensing, it is usually necessary to estimate the distance, azimuth angle, and speed of the target. To achieve wireless sensing, it is usually necessary to send a reference signal for sensing. This reference signal can be sent through beamforming to sense the target within the beam coverage.

[0003] Summary of the Invention

[0004] The embodiments of the present disclosure propose a beam sending method, an information sending method, a sensing device, and a sensing system.

[0005] According to a first aspect of an embodiment of the present disclosure, a beam transmission method is proposed, the method including:

[0006] receiving first information indicating a granularity of perception;

[0007] A perception reference signal is sent through beamforming based on the first information.

[0008] According to a second aspect of an embodiment of the present disclosure, a method for sending information is proposed, which is performed by a core network element. The method includes:

[0009] First information is sent, where the first information indicates a granularity of perception.

[0010] According to a third aspect of an embodiment of the present disclosure, a beam transmission method is proposed, the method including:

[0011] The core network element sends first information to the electronic device where the transmitter is located, where the first information indicates the granularity of perception;

[0012] The electronic device where the transmitter is located sends a perception reference signal through beamforming based on the first information.

[0013] According to a fourth aspect of the embodiments of the present disclosure, a sensing device is provided, including:

[0014] The transceiver module is configured to receive first information indicating a granularity of perception, and send a perception reference signal through beamforming based on the first information.

[0015] According to a fifth aspect of an embodiment of the present disclosure, a network device is provided, including:

[0016] The transceiver module is configured to send first information, where the first information indicates the granularity of perception.

[0017] According to a sixth aspect of an embodiment of the present disclosure, a sensing device is provided, including:

[0018] one or more processors;

[0019] The sensing device is used to execute the beam sending method described in the first aspect of the embodiment of the present disclosure.

[0020] According to a seventh aspect of an embodiment of the present disclosure, a network device is provided, including:

[0021] one or more processors;

[0022] The network device is used to execute the information sending method described in the second aspect of the embodiment of the present disclosure.

[0023] According to an eighth aspect of an embodiment of the present disclosure, a perception system is proposed, including a transmitter and a receiver, wherein the transmitter is configured to implement the beam sending method described in the first aspect of the embodiment of the present disclosure.

[0024] According to the ninth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes the beam sending method described in the first aspect of the embodiment of the present disclosure, or executes the information sending method described in the second aspect of the embodiment of the present disclosure.

[0025] The embodiment of the present disclosure sends a perception reference signal through beamforming based on the first information. Therefore, the perception reference signal can be sent using a corresponding wide beam or narrow beam according to the perception granularity indicated by the first information. The granularity and accuracy of the perception can be flexibly and dynamically adjusted, which is conducive to quickly completing the construction of the perception map and / or constructing a high-precision perception map. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0027] FIG1 is an exemplary schematic diagram of beam squint provided according to an embodiment of the present disclosure.

[0028] FIG2 is an exemplary schematic diagram of the architecture of a perception system provided according to an embodiment of the present disclosure.

[0029] FIG3 is an exemplary interactive diagram of a beam transmission method according to an embodiment of the present disclosure.

[0030] FIG4A is a schematic diagram of an exemplary flow chart of a beam transmission method provided according to an embodiment of the present disclosure.

[0031] FIG4B is a schematic diagram of an exemplary flow chart of a beam transmission method provided according to an embodiment of the present disclosure.

[0032] FIG4C is a schematic diagram of an exemplary flow chart of a beam transmission method according to an embodiment of the present disclosure.

[0033] FIG4D is a schematic diagram of an exemplary flow chart of a beam transmission method according to an embodiment of the present disclosure.

[0034] FIG5 is a schematic diagram of an exemplary flow chart of a method for sending information according to an embodiment of the present disclosure.

[0035] FIG6 is a schematic diagram of an exemplary flow chart of a method for sending information according to an embodiment of the present disclosure.

[0036] FIG7A is an exemplary schematic diagram of the structure of a sensing device provided according to an embodiment of the present disclosure.

[0037] FIG7B is an exemplary schematic diagram of the structure of a network device provided according to an embodiment of the present disclosure.

[0038] FIG8A is an exemplary schematic diagram of the structure of a communication device provided according to an embodiment of the present disclosure.

[0039] FIG8B is an exemplary schematic diagram of the structure of a chip provided according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0040] The embodiments of the present disclosure propose a beam sending method, an information sending method, a sensing device, and a sensing system.

[0041] In a first aspect, an embodiment of the present disclosure proposes a beam transmission method, the method comprising: receiving first information indicating a perception granularity; and transmitting a perception reference signal through beamforming based on the first information.

[0042] In the above embodiment, the perception reference signal is sent through beamforming based on the first information. Therefore, the perception reference signal can be sent using a corresponding wide beam or narrow beam according to the perception granularity indicated by the first information. The granularity and accuracy of the perception can be flexibly and dynamically adjusted, which is conducive to quickly completing the construction of the perception map and / or constructing a high-precision perception map.

[0043] In combination with some embodiments of the first aspect, in some embodiments, sending a perception reference signal through beamforming based on the first information includes: the first information indicates a first granularity of perception, performing beam phase compensation processing on the perception reference signal port; and sending the perception reference signal through beamforming.

[0044] In the above embodiment, if the first information indicates a first granularity for perception, such as fine granularity, beam phase compensation can be performed on the perception reference signal port. This beam phase compensation can compensate for and overcome beam squint, thereby using a narrow beam for the transmitted perception reference signal, achieving fine-grained, high-precision perception. For example, for a perception target with a small cross-sectional area or requiring further perception, beam phase compensation is performed on the perception reference signal port based on the first information, thereby using the narrow beam formed after processing to achieve high-precision perception at a fine granularity. Each port of the perception reference signal can be referred to as a perception reference signal port.

[0045] In combination with some embodiments of the first aspect, in some embodiments, sending a perception reference signal through beamforming based on the first information includes: the first information indicates a second granularity of perception, and beam phase compensation processing is not performed on the perception reference signal port; and sending the perception reference signal through beamforming.

[0046] In the above embodiment, if the first information indicates a second granularity for perception, for example, coarse granularity, beam phase compensation processing may not be performed on the perception reference signal port, so that the beam used for the transmitted perception reference signal is a wide beam. The beam widened by squint can reduce the beam scanning period and accelerate the beam scanning process, thereby achieving coarse-grained and rapid perception. For example, for a perception target with a large cross-sectional area, based on the first information, coarse-grained perception with lower precision can be achieved using a wide beam caused by squint, thereby achieving rapid perception.

[0047] In combination with some embodiments of the first aspect, in some embodiments, the beam phase compensation processing includes performing phase compensation on a precoding vector of a first frequency of a perception reference signal port.

[0048] In the above embodiment, the phase compensation is performed on the precoding vector of the first frequency of the CRS, so that the CRS is precoded using the compensated precoding vector. For example, the first frequency may be the frequency of the CRS port to be compensated.

[0049] In combination with some embodiments of the first aspect, in some embodiments, the perception reference signal is a wideband signal, the narrowband subcarrier of the perception reference signal port includes a first narrowband subcarrier and a second narrowband subcarrier, and the compensated precoding vector of the first narrowband subcarrier is different from the precoding vector of the second narrowband subcarrier.

[0050] In the above embodiment, the narrowband subcarriers of a perception reference signal port include a first narrowband subcarrier and a second narrowband subcarrier, wherein there may be multiple first narrowband subcarriers. Through beam phase compensation processing, the phase of the elements in the precoding vector of the first narrowband subcarrier is compensated, and the phase of the elements in the precoding vector of the second narrowband subcarrier is not compensated, so that the beam formed on the first narrowband subcarrier can be aligned with the beam formed on the second narrowband subcarrier.

[0051] In combination with some embodiments of the first aspect, in some embodiments, the antenna array used to send the perception reference signal through beamforming is a uniform linear array, and the precoding vector before compensation is The phase rotation vector of the first frequency is The compensated precoding vector is a vector obtained by multiplying the precoding vector before compensation by the corresponding element of the phase rotation vector of the first frequency, that is, the compensated precoding vector is the Schur product (Schur product) or Hadamard product (Hadamard product) of the precoding vector before compensation and the phase rotation vector of the first frequency; wherein d is the antenna spacing of the antenna array, θ is the target pointing direction of the beam corresponding to the sensing reference signal port, λ0 is the first wavelength, f0 is the second frequency, c is the speed of light, N t is the number of antenna ports contained in the antenna array, j is the imaginary unit, e is a natural constant, and r is the normalized frequency coefficient of the first frequency relative to the second frequency.

[0052] In conjunction with some embodiments of the first aspect, in some embodiments, the antenna array used to send the perception reference signal through beamforming is a uniform linear array, and the precoding vector before compensation is expressed as The first frequency is v 0，i The phase rotation vector is The compensated precoding vector is expressed as v r，i v 0，i With v Δ，i The vector obtained by multiplying the corresponding elements of (r), that is, v r，i v 0，i With v Δ，i (r) is the Schur product or Hadamard product; where v 0，i The dimension is N t The i-th column vector of the Discrete Fourier Transform (DFT) matrix, c i v 0，i The corresponding weighting coefficient, N tis the number of antenna ports contained in the antenna array, j is the imaginary unit, e is a natural constant, and r is the normalized frequency coefficient of the first frequency relative to the second frequency.

[0053] In combination with some embodiments of the first aspect, in some embodiments, the antenna array used to send a perception reference signal through beamforming is a uniform array, and the compensated precoding vector is the Kronecker product between the compensated horizontal dimension precoding vector and the compensated vertical dimension precoding vector; the compensated horizontal dimension precoding vector is the vector obtained by multiplying the horizontal dimension precoding vector before compensation with the corresponding element of the first phase rotation vector, that is, the compensated horizontal dimension precoding vector is the Schur product (Schur product) or Hadamard product (Hadamard product) of the horizontal dimension precoding vector before compensation and the first phase rotation vector, and the first phase rotation vector is the phase rotation vector of the first frequency in the horizontal dimension; the compensated vertical dimension precoding vector is the vector obtained by multiplying the vertical dimension precoding vector and the corresponding element of the second phase rotation vector before compensation, that is, the compensated vertical dimension precoding vector is the Schur product (Schur product) or Hadamard product (Hadamard product) of the vertical dimension precoding vector before compensation and the second phase rotation vector, and the second phase rotation vector is the phase rotation vector of the first frequency in the vertical dimension.

[0054] In conjunction with some embodiments of the first aspect, in some embodiments, the precoding vector of the horizontal dimension before compensation is The phase rotation vector of the first frequency in the horizontal dimension is The precoding vector of the vertical dimension before compensation is The phase rotation vector of the first frequency in the vertical dimension is Among them, d (h) is the antenna spacing of the antenna array in the horizontal dimension, d (v) is the antenna spacing of the antenna array in the vertical dimension, θ is the target pointing of the beam corresponding to the sensing reference signal port in the horizontal dimension, φ is the target pointing of the beam corresponding to the sensing reference signal port in the vertical dimension, λ0 is the first wavelength, f0 is the second frequency, c is the speed of light, is the number of antenna ports contained in the horizontal dimension of the antenna array, is the number of antenna ports contained in the vertical dimension of the antenna array, j is the imaginary unit, e is a natural constant, and r is the normalized frequency coefficient of the first frequency relative to the second frequency.

[0055] In the aforementioned embodiments, the precoding vectors of the perception reference signal ports are expressed in different forms, and the phase rotation vectors of the first frequency are correspondingly different. In general, in the aforementioned embodiments, for the first frequency of the perception reference signal, the phase rotation vector of the first frequency is obtained based on the normalized frequency coefficient of the first frequency relative to the second frequency (which can be understood as the reference frequency). The precoding vector is phase-compensated based on the phase rotation vector of the first frequency. The formulas for the precoding vector and the phase rotation vector indicate that the compensated precoding vector accurately points in the desired beam direction. Therefore, beam squint can be fully compensated for and overcome, beams at different frequencies can be strictly aligned, and narrow beams can be transmitted to achieve high-precision perception.

[0056] In a second aspect, an embodiment of the present disclosure proposes an information sending method, which is executed by a core network element. The method includes: sending first information, where the first information indicates the granularity of perception.

[0057] In the above embodiment, the core network element may send first information to the electronic device where the transmitter is located to indicate the granularity of perception, so that the electronic device where the transmitter is located may send a perception reference signal through beamforming based on the first information.

[0058] In a third aspect, an embodiment of the present disclosure proposes a beam sending method, which includes: a core network element sends first information to an electronic device where the transmitter is located, where the first information indicates the granularity of perception; and the electronic device where the transmitter is located sends a perception reference signal through beamforming based on the first information.

[0059] In a fourth aspect, an embodiment of the present disclosure proposes a perception device, including: a transceiver module, configured to receive first information indicating the granularity of perception, and send a perception reference signal through beamforming based on the first information.

[0060] In a fifth aspect, an embodiment of the present disclosure proposes a network device, comprising: a transceiver module, configured to send first information, where the first information indicates a granularity of perception.

[0061] In a sixth aspect, an embodiment of the present disclosure proposes a perception device, comprising: one or more processors; wherein the perception device is used to execute the method described in the first aspect or the optional implementation of the first aspect.

[0062] In a seventh aspect, an embodiment of the present disclosure proposes a network device, comprising: one or more processors; wherein the network device is used to execute the method described in the second aspect or the optional implementation of the second aspect.

[0063] In an eighth aspect, an embodiment of the present disclosure proposes a perception system, comprising a transmitter and a receiver, wherein the transmitter is configured to implement the method described in the first aspect or an optional implementation manner of the first aspect.

[0064] In the ninth aspect, an embodiment of the present disclosure proposes a storage medium storing instructions. When the instructions are executed on a communication device, the communication device executes the method described in the first aspect or the optional implementation of the first aspect, or the method described in the second aspect or the optional implementation of the second aspect.

[0065] In the tenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the first aspect or the optional implementation of the first aspect, or the method described in the second aspect or the optional implementation of the second aspect.

[0066] In the eleventh aspect, an embodiment of the present disclosure proposes a computer program, which, when running on a computer, enables the computer to execute the method described in the first aspect or the optional implementation of the first aspect, or the method described in the second aspect or the optional implementation of the second aspect.

[0067] In a twelfth aspect, an embodiment of the present disclosure provides a chip or a chip system. The chip or chip system includes a processing circuit configured to execute the method described in accordance with the first aspect or an optional implementation of the first aspect, or the method described in accordance with the second aspect or an optional implementation of the second aspect.

[0068] It is understandable that the above-mentioned sensing devices, network devices, sensing systems, storage media, program products, computer programs, chips, or chip systems are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0069] The embodiments of the present disclosure provide a beam transmission method, an information transmission method, a sensing device, and a sensing system. In some embodiments, the terms beam transmission method, signal transmission method, and sensing method are interchangeable, the terms information transmission method and sensing method are interchangeable, and the terms sensing system, communication system, and synaesthesia system are interchangeable. In some embodiments, the transmitter includes a transmitter for sensing (hereinafter referred to as a sensing transmitter). In some embodiments, the receiver includes a receiver for sensing (hereinafter referred to as a sensing receiver).

[0070] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0071] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0072] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0073] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0074] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0075] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0076] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0077] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0078] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0079] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0080] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0081] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0082] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0083] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0084] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0085] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0086] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0087] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0088] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0089] Wireless communication and wireless sensing share a high degree of similarity. Integrated Sensing and Communication (ISAC) can unite wireless communication and wireless sensing, fostering close collaboration between the two. This approach benefits both wireless communication and wireless sensing, improving both the effectiveness and reliability of wireless communication and the accuracy of wireless sensing. Furthermore, devices that support both wireless communication and wireless sensing can reduce network deployment costs.

[0090] Wireless sensing typically requires estimating the target's range, azimuth angle (such as horizontal and vertical angles), and velocity. Broadly speaking, sensing also includes wireless tracking and radio frequency identification of the target. To achieve high-precision sensing, the transmitter typically transmits a dedicated reference signal for sensing, which, for ease of description, will be referred to as a sensing reference signal. Optionally, the sensing reference signal may not carry any information or data used for communication. Alternatively, the sensing reference signal may be referred to as a sensing signal.

[0091] It is understandable that wireless perception may include multiple perception scenarios, such as perception between terminals, perception between terminals and network devices, perception between network devices and network devices, etc.

[0092] In some embodiments, in a monostatic mode, the transmitter may transmit a sensing reference signal and estimate at least one of a distance, an angle, a speed, etc. of a sensing target by measuring an echo of the sensing reference signal.

[0093] In some embodiments, in a bistatic mode, a transmitter may transmit a sensing reference signal, and a receiver may receive and measure the sensing reference signal to estimate at least one of a distance, an angle, a speed, etc. of a sensing target.

[0094] In single-station mode, the transmitter and receiver can be located on the same device, such as the same terminal or the same network device. In dual-station mode, the transmitter and receiver can be located on different devices, such as the transmitter at the terminal and the receiver at another terminal, the transmitter at the terminal and the receiver at the network device, the transmitter at the network device and the receiver at another network device, or the transmitter at the network device and the receiver at the terminal.

[0095] In some embodiments, whether in single-station mode, dual-station mode, or even multistatic mode, each receiver can report its measurement results of the sensing reference signal to a core network unit. In some embodiments, the core network unit is, for example, a location management function (LMF). In some embodiments, the core network unit is, for example, a network unit for sensing, such as a sensing management function (SMF). It is understood that in some embodiments, the core network unit can also be other network units. Ultimately, these core network units calculate at least one of the distance, angle, speed, etc. of each sensing target and / or construct a wireless sensing map.

[0096] For example, estimating the distance to a perceived target requires the receiver to accurately estimate the arrival time of the first echo path reflected by the perceived target (in single-station mode) or the first path scattered by the perceived target (in dual-station mode). To improve the accuracy of distance perception, higher time domain resolution is required, and to achieve this, the perception reference signal needs to have a larger bandwidth.

[0097] In high-frequency bands such as millimeter wave (mmWave), sub-terahertz (subThz), and terahertz (THz), wide bandwidth requirements are relatively easy to meet. However, these high-frequency resources suffer from extremely severe propagation losses. In such cases, large-scale antenna arrays must be used to achieve perception through beamforming. Otherwise, severe high-frequency transmission losses will significantly reduce perception accuracy and performance.

[0098] On the one hand, when beamforming is used, high-precision perception is limited to targets within or near the beam's coverage area. Targets outside the beam's coverage area or far from the beam's area experience lower perception accuracy, and perception performance cannot be guaranteed. Therefore, the transmitter must perform beam sweeping to achieve accurate perception of surrounding targets. However, the higher the carrier frequency, the narrower the beam. For a given area, beam sweeping requires more beams and takes longer.

[0099] On the other hand, large-scale antenna arrays may experience beam squint in large bandwidths, meaning that a given precoding vector will form beams with different directions at different frequencies (e.g., different subcarriers in an Orthogonal Frequency Division Multiplexing (OFDM) system). Figure 1 shows an example of beam squint. For example, the precoding vector The beam formed at frequency f0 is pointed direction, and in frequency Beam pointing Obviously, the beam squint phenomenon will cause the beam formed on certain frequency resources to deviate from the expected direction, resulting in a decrease in beamforming gain.

[0100] In addition, it is worth noting that there are many types of scatterers (including sensing targets and non-sensing targets), and some scatterers have large cross-sectional areas. If a narrower beam is used for scanning, then multiple beams will perceive different parts of the same scatterer, which is obviously unnecessary. Some scatterers have smaller cross-sectional areas and require narrower beam scanning to ensure sensing accuracy. Therefore, in some embodiments, the requirements for the sensing reference signal in the sensing scene may depend on the characteristics of the specific sensing target (such as the type of sensing target, cross-sectional area, etc.) and the characteristics of the surrounding scatterers.

[0101] FIG2 is a schematic diagram of a perception system according to an embodiment of the present disclosure. As shown in FIG2 , perception system 100 may include a transmitter 101 and a receiver 102. In some embodiments, transmitter 101 comprises a perception transmitter. In some embodiments, receiver 102 comprises a perception receiver.

[0102] It should be noted that the number of transmitters 101 and the number of receivers 102 shown in Figure 2 are only examples and do not constitute a limitation on the embodiments of the present disclosure. In actual situations, there can be one or more transmitters 101 and one or more receivers 102.

[0103] In some embodiments, the transmitter 101 may be located in a terminal or a network device.

[0104] In some embodiments, the receiver 102 may be located in a terminal or a network device.

[0105] In some embodiments, the transmitter 101 and the receiver 102 may be located in the same device, for example, the transmitter 101 and the receiver 102 may be located in the same terminal or the same network device.

[0106] In some embodiments, the transmitter 101 and the receiver 102 may be located in different devices respectively, for example, the transmitter 101 is located in the terminal and the receiver 102 is located in another terminal; for example, the transmitter 101 is located in the terminal and the receiver 102 is located in the network device; for example, the transmitter 101 is located in the network device and the receiver 102 is located in another network device; for example, the transmitter 101 is located in the network device and the receiver 102 is located in the terminal.

[0107] In some embodiments, the terminal may include at least one of a mobile phone, a wearable device, an Internet of Things device, a car with sensing capabilities, a smart car, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and a wireless terminal device in a smart home, but is not limited thereto.

[0108] In some embodiments, the network device includes, for example, an access network device, and the access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0109] FIG3 is an interactive diagram illustrating a beam transmission method according to an embodiment of the present disclosure. As shown in FIG3 , the embodiment of the present disclosure relates to a beam transmission method and an information transmission method, the method comprising:

[0110] Step S3101: The network device sends first information.

[0111] In some embodiments, the network device is, for example, an access network device or a core network device. In some embodiments, the network device includes a first network element. In some embodiments, the first network element is, for example, an LMF or an SMF. In some embodiments, the first network element may be configured to transmit first information to an electronic device where a transmitter resides, and / or process measurement results of a perception reference signal by an electronic device where a receiver resides, without limitation to these.

[0112] In some embodiments, the network device sends the first information to the electronic device where the transmitter is located.

[0113] In some embodiments, the first information can be used to indicate the granularity of perception. The granularity of perception can represent the step size when perceiving a given perception range (scanning), a larger step size indicates a coarser perception granularity, and a smaller step size indicates a finer perception granularity. Taking angle perception as an example, the angle range of perception is 120 degrees. If a beam with a width of 30 degrees is used for perception, then 4 non-overlapping beams are required to complete the perception of the 120-degree angle range, so in this case, the perception granularity is coarser; if a beam with a width of 20 degrees is used for perception, then 6 non-overlapping beams are required to complete the perception of the 120-degree angle range, so in this case, the perception granularity is finer.

[0114] For example, the first information may be used to indicate a first granularity. The first granularity may be refined granularity. For another example, the first information may indicate a second granularity, such as coarse granularity. In some embodiments, the name of the first information is not limited, and may be, for example, "granularity indicator (GI)".

[0115] In some embodiments, the first information may be carried in various existing signaling, such as downlink control information (DCI) or radio resource control (RRC) message, which is not limited here.

[0116] In some embodiments, the first information can be used to determine whether to perform beam phase compensation processing. Beam phase compensation processing means performing a phase rotation on the elements of the precoding vector corresponding to the beam, for example, performing a phase rotation on each element of the precoding vector corresponding to the beam. For example, a beam is formed by an antenna array including N antenna ports. Assume that the phase of the i-th element (corresponding to the i-th antenna port) of the precoding vector before compensation is α i, the phase rotation of the i-th element (corresponding to the i-th antenna port) of the phase rotation vector used for beam phase compensation is β i , then the phase of the i-th element of the compensated precoding vector (corresponding to the i-th antenna port) is α i +β i In some embodiments, the name of the beam phase compensation process is not limited, and it can be, for example, "predistortion processing".

[0117] In some embodiments, the first information is used to determine whether to perform beam phase compensation processing on a perception reference signal port. Each perception reference signal port may be referred to as a perception reference signal port. In some embodiments, an electronic device containing a transmitter receives the first information and, based on the perception granularity indicated by the first information, performs beam phase compensation processing on the perception reference signal port or does not perform beam phase compensation processing on the perception reference signal port.

[0118] In some embodiments, the electronic device where the transmitter is located may send a request message to the network device, where the request message is used to request the first information. After receiving the request message, the network device sends the first information.

[0119] In step S3102, the electronic device where the transmitter is located sends a sensing reference signal through beamforming.

[0120] Step S3101 is an optional step. If step S3101 is not executed and the electronic device where the transmitter is located does not obtain the first information, the perceived granularity can be set to a default value to determine whether to perform beam phase compensation processing; or, a default configuration can be obtained to determine whether to perform beam phase compensation processing according to the default configuration, for example, the default configuration includes a default value for the perceived granularity.

[0121] In one implementation, the electronic device in which the transmitter resides performs beam phase compensation on the perception reference signal port based on the first information and transmits the perception reference signal through beamforming. In another implementation, the electronic device in which the transmitter resides does not perform beam phase compensation on the perception reference signal port based on the first information and transmits the perception reference signal through beamforming.

[0122] In some embodiments, whether to perform beam phase compensation processing on the sensing reference signal port may include but is not limited to at least one of the following implementations:

[0123] The first information indicates a first granularity of perception, and performs beam phase compensation processing on the perception reference signal port;

[0124] The first information does not indicate a first granularity of perception, and beam phase compensation processing is not performed on the perception reference signal port;

[0125] The first information indicates a second granularity of sensing, and beam phase compensation processing is not performed on the sensing reference signal port;

[0126] The first information does not indicate a second granularity of perception, and beam phase compensation processing is performed on the perception reference signal port.

[0127] In some embodiments, an optional implementation of determining whether to perform beam phase compensation processing according to a default value of the perceived granularity may refer to the above implementation.

[0128] In some embodiments, performing beam phase compensation processing on the perception reference signal port may include: performing beam phase compensation processing on at least one perception reference signal port.

[0129] In some embodiments, not performing beam phase compensation processing on the sensing reference signal port may include: not performing beam phase compensation processing on any sensing reference signal port.

[0130] In some embodiments, the first information indicates a first granularity of perception. The electronic device in which the transmitter resides performs beam phase compensation on at least one perception reference signal port and transmits the perception reference signal through beamforming. It will be understood that in this case, the beam used to transmit the perception reference signal is a narrow beam or a relatively narrow beam. This beam phase compensation process can fully or partially compensate for and overcome beam squint, thereby achieving fine-grained, high-precision perception.

[0131] In some embodiments, the first information indicates a second granularity of perception. The electronic device in which the transmitter resides does not perform beam phase compensation processing on any sensing reference signal port and transmits the sensing reference signal via beamforming. It will be understood that in this case, the beam used to transmit the sensing reference signal is a wide beam. Because the beam is widened due to beam squint, the beam scanning period can be reduced, accelerating the beam scanning process, thereby achieving coarse-grained and rapid perception.

[0132] According to the above embodiments, the embodiments of the present disclosure propose an adaptive perception method, which can flexibly and dynamically adjust the granularity and accuracy of perception based on the first information sent by the network device, which is conducive to quickly completing the construction of the perception map and / or constructing a high-precision perception map. In one example, for a perception target with a large cross-sectional area, a first information can be sent to indicate a second granularity, so that a wide beam caused by squint can be used to perform coarse-grained perception with lower accuracy, and perception can be completed quickly. In one example, for a perception target with a small cross-sectional area or that requires further perception, a first information can be sent to indicate a first granularity, so that a narrow beam that has been pre-distorted can be used to perform fine-grained perception with higher accuracy. In some embodiments, the pre-distortion processing can compensate for and overcome beam squint, strictly align beams at different frequencies, and thus achieve high-precision perception. In some embodiments, the pre-distortion processing can at least partially compensate for beam squint.

[0133] According to the above embodiment, the electronic device where the transmitter is located can achieve coarse-grained rapid perception or fine-grained high-precision perception by not compensating or compensating the phase of the squinted beam based on the first information.

[0134] In some embodiments, the beam phase compensation process may introduce a phase rotation to each element of the precoding vector corresponding to the perceptual reference signal port.

[0135] In some embodiments, the beam phase compensation process includes performing phase compensation on a precoding vector of a first frequency of a sensing reference signal port. In some embodiments, the first frequency can be understood as a frequency to be compensated for the sensing reference signal port, and there can be multiple first frequencies.

[0136] To facilitate understanding of the specific process of the beam phase compensation processing, its optional implementation is described below.

[0137] Implementation method 1:

[0138] The antenna array used to transmit the sensing reference signal through beamforming is a uniform linear array (ULA).

[0139] Assume that the precoding vector (before compensation) used for this perceptual reference signal port is Where d is the antenna spacing of the antenna array, θ is the target pointing direction (desired beam direction) of the beam corresponding to the sensing reference signal port, for example, θ∈[0,π], λ0 is the first wavelength, f0 is the second frequency, c is the speed of light, N t is the number of antenna ports contained in the antenna array, is an imaginary unit, and e is a natural constant. In some embodiments, the first wavelength can be understood as a reference wavelength, and the second frequency can be understood as a reference frequency.

[0140] The phase rotation vector of the first frequency is Wherein, r is the normalized frequency coefficient of the first frequency relative to the second frequency. For example, f0 is the second frequency, rf0 is the first frequency, r<1 indicates that the first frequency is lower than the second frequency, r>1 indicates that the first frequency is higher than the second frequency, and in particular, r=1 indicates that the first frequency is equal to the second frequency.

[0141] For the first frequency rf0, the compensated precoding vector is That is, the compensated precoding vector is a vector obtained by multiplying the precoding vector before compensation and the corresponding elements of the phase rotation vector of the first frequency, that is, the compensated precoding vector is the Schur product (Schur product) or Hadamard product (Hadamard product) of the precoding vector before compensation and the phase rotation vector of the first frequency.

[0142] It is worth noting that the embodiment of the present disclosure does not limit the second frequency, which can be any frequency.

[0143] In some embodiments, the second frequency may take the following typical values:

[0144] carrier frequency;

[0145] Center frequency;

[0146] The frequencies of the center frequency / lowest frequency / highest frequency subcarriers;

[0147] The frequency is determined by the antenna spacing; for example, half a wavelength spacing For example, the second frequency

[0148] Implementation 2:

[0149] The antenna array used to transmit the sensing reference signal through beamforming is a ULA.

[0150] Assume that the precoding vector (before compensation) used for the perceptual reference signal port can be expressed as Among them, v 0，i The dimension is N t The i-th column vector of the Discrete Fourier Transform (DFT) matrix, for example, c i v 0，iThe corresponding weighting coefficient, for example, c i v 0，i The corresponding orthogonal projection coefficient, N t is the number of antenna ports contained in the antenna array, is the imaginary unit and e is a natural constant.

[0151] First frequency pair 0，i The phase rotation vector is Where r is the normalized frequency coefficient of the first frequency relative to the second frequency. For example, f0 is the second frequency, rf0 is the first frequency, r<1 indicates that the first frequency is lower than the second frequency, r>1 indicates that the first frequency is higher than the second frequency, and in particular, r=1 indicates that the first frequency is equal to the second frequency. In some embodiments, the second frequency can be understood as a reference frequency.

[0152] For the first frequency rf0, the compensated precoding vector can be expressed as in That is, v r，i v 0，i With v Δ，i The vector obtained by multiplying the corresponding elements of (r), that is, v r，i v 0，i With v Δ，i (r) is the Schur product or Hadamard product.

[0153] It is worth noting that the embodiment of the present disclosure does not limit the second frequency, which can be any frequency.

[0154] In some embodiments, the second frequency may take the following typical values:

[0155] carrier frequency;

[0156] Center frequency;

[0157] The frequencies of the center frequency / lowest frequency / highest frequency subcarriers;

[0158] The frequency is determined by the antenna spacing; for example, half a wavelength spacing For example, the second frequency

[0159] Implementation 3:

[0160] The antenna array used to transmit the sensing reference signal through beamforming is a uniform planar array (UPA).

[0161] The compensated precoding vector is the Kronecker product between the compensated precoding vector of the horizontal dimension and the compensated precoding vector of the vertical dimension. The compensated precoding vector of the horizontal dimension is the vector obtained by multiplying the precoding vector of the horizontal dimension before compensation with the corresponding element of the first phase rotation vector, that is, the compensated precoding vector of the horizontal dimension is the Schur product (Schur product) or Hadamard product (Hadamard product) of the precoding vector of the horizontal dimension before compensation and the first phase rotation vector, and the first phase rotation vector is the phase rotation vector of the first frequency in the horizontal dimension. The compensated precoding vector of the vertical dimension is the vector obtained by multiplying the precoding vector of the vertical dimension before compensation with the corresponding element of the second phase rotation vector, that is, the compensated precoding vector of the vertical dimension is the Schur product (Schur product) or Hadamard product (Hadamard product) of the precoding vector of the vertical dimension before compensation and the second phase rotation vector, and the second phase rotation vector is the phase rotation vector of the first frequency in the vertical dimension.

[0162] Assume that the precoding vector (before compensation) used for this perceptual reference signal port is For example, is the precoding vector of the horizontal dimension (before compensation), is the precoding vector in the vertical dimension (before compensation). (h) is the antenna spacing of the antenna array in the horizontal dimension, d (v) is the antenna spacing of the antenna array in the vertical dimension, θ is the target pointing direction of the beam corresponding to the sensing reference signal port in the horizontal dimension (the desired beam direction), and φ is the target pointing direction of the beam corresponding to the sensing reference signal port in the vertical dimension (the desired beam direction). For example, θ, φ∈[0,π], λ0 is the first wavelength, f0 is the second frequency, c is the speed of light, is the number of antenna ports contained in the horizontal dimension of the antenna array, is the number of antenna ports contained in the vertical dimension of the antenna array, is an imaginary unit, and e is a natural constant. In some embodiments, the first wavelength can be understood as a reference wavelength, and the second frequency can be understood as a reference frequency.

[0163] The phase rotation vector of the first frequency in the horizontal dimension is

[0164] The phase rotation vector of the first frequency in the vertical dimension is

[0165] For the first frequency rf0, the compensated precoding vector is For example, is the precoding vector of the horizontal dimension after compensation, is the precoding vector of the vertical dimension after compensation.

[0166] That is, the precoding vector of the horizontal dimension after compensation is is the precoding vector of the horizontal dimension before compensation The phase rotation vector in the horizontal dimension with respect to the first frequency The vector obtained by multiplying the corresponding elements of for and Schur product or Hadamard product, the precoding vector of the vertical dimension after compensation is the precoding vector of the vertical dimension before compensation The vector obtained by multiplying the corresponding elements of for and The Schur product or Hadamard product of .

[0167] It is worth noting that the embodiment of the present disclosure does not limit the second frequency, which can be any frequency.

[0168] In some embodiments, the second frequency may take the following typical values:

[0169] carrier frequency;

[0170] Center frequency;

[0171] The frequencies of the center frequency / lowest frequency / highest frequency subcarriers;

[0172] The frequency is determined by the antenna spacing; for example, half a wavelength spacing For example, the second frequency

[0173] In combination with the above optional implementation, in some embodiments, the perception reference signal is a broadband signal, and the narrowband subcarrier of a perception reference signal port includes a first narrowband subcarrier and a second narrowband subcarrier, and the compensated precoding vector of the first narrowband subcarrier is different from the precoding vector of the second narrowband subcarrier. Among them, there may be multiple first narrowband subcarriers. In some embodiments, the first narrowband subcarrier may correspond to the above-mentioned first frequency, and the second narrowband subcarrier may correspond to the above-mentioned second frequency. Through beam phase compensation processing, the phase of the elements in the precoding vector of the first narrowband subcarrier is compensated, and the phase of the elements in the precoding vector of the second narrowband subcarrier is not compensated, so that the beam formed on the first narrowband subcarrier can be aligned with the beam formed on the second narrowband subcarrier. In some embodiments, the first narrowband subcarrier and the second narrowband subcarrier may be different subcarriers of the OFDM system, or may be different bandwidth parts (Bandwidth Part, BWP).

[0174] For a linear frequency modulation signal (Chirp signal), according to an embodiment of the present disclosure, different phase compensations may be performed for different frequencies at different times to obtain different compensated precoding vectors.

[0175] According to the above optional implementation method, for the first frequency of the perception reference signal, the embodiment of the present disclosure obtains the phase rotation vector of the first frequency based on the normalized frequency coefficient of the first frequency relative to the second frequency (which can be understood as the reference frequency), and performs phase compensation on the precoding vector based on the phase rotation vector of the first frequency. According to the above formula, it can be seen that the compensated precoding vector is a precoding vector that accurately points to the desired beam direction, so it can fully compensate and overcome beam squint, and can strictly align beams at different frequencies to send narrow beams to achieve high-precision perception.

[0176] It can be understood that the precoding vector shown in the above embodiment is only an example and does not constitute a limitation on the implementation of the precoding vector. For example, in some embodiments, the precoding vector may be implemented in other possible ways.

[0177] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "parameter", "domain", "field", and "notification" can be used interchangeably.

[0178] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0179] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0180] The beam transmission method involved in the embodiments of the present disclosure may include at least one of steps S3101 and S3102. For example, step S3101 may be implemented as an independent embodiment, and step S3102 may be implemented as an independent embodiment, but are not limited thereto.

[0181] FIG4A is a flow chart of a beam transmission method according to an embodiment of the present disclosure. As shown in FIG4A , the embodiment of the present disclosure relates to a beam transmission method, which is applied to a transmitter or an electronic device in which the transmitter is located. The method includes:

[0182] Step S4101, receiving first information.

[0183] In some embodiments, the first information is used to determine whether to perform beam phase compensation processing.

[0184] The optional implementation of step S4101 can refer to the optional implementation of step S3101 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0185] Step S4102: Perform beam phase compensation processing on the perception reference signal port based on the first information.

[0186] In some embodiments, beam phase compensation processing is performed on the perception reference signal port based on the first information, which may include but is not limited to at least one of the following implementations:

[0187] The first information indicates a first granularity of perception, and performs beam phase compensation processing on the perception reference signal port;

[0188] The first information does not indicate a second granularity of perception, and beam phase compensation processing is performed on the perception reference signal port.

[0189] In some embodiments, performing beam phase compensation processing on the perception reference signal port may include: performing beam phase compensation processing on at least one perception reference signal port.

[0190] Step S4103: Send a sensing reference signal through beamforming.

[0191] In some embodiments, the beam phase compensation process includes performing phase compensation on a precoding vector of a first frequency of a perception reference signal port, and precoding the perception reference signal according to the compensated precoding vector, thereby sending the perception reference signal through beamforming.

[0192] Optional implementations of step S4102 and step S4103 can refer to the optional implementation of step S3102 in FIG3 and other related parts in the embodiment involved in FIG3 , which will not be described in detail here.

[0193] According to the above embodiment, the transmitter or its electronic device performs beam phase compensation on the perception reference signal port based on the first information. This beam phase compensation can compensate for and overcome beam squint, achieving fine-grained, high-precision perception. In one example, for perception targets with small cross-sectional areas or requiring further perception, beam phase compensation can be performed on the perception reference signal port based on the first information, thereby using the narrow beam formed after processing to achieve fine-grained, high-precision perception.

[0194] FIG4B is a flow chart of a beam transmission method according to an embodiment of the present disclosure. As shown in FIG4B , the embodiment of the present disclosure relates to a beam transmission method, which is applied to a transmitter or an electronic device in which the transmitter is located. The method includes:

[0195] Step S4201, receiving first information.

[0196] In some embodiments, the first information is used to determine whether to perform beam phase compensation processing.

[0197] Optional implementations of step S4201 may refer to step S3101 in FIG. 3 , optional implementations of step S4101 in FIG. 4A , and other related parts in the embodiments involved in FIG. 3 and FIG. 4A , which will not be described in detail here.

[0198] Step S4202: Based on the first information, beam phase compensation processing is not performed on the perception reference signal port.

[0199] In some embodiments, based on the first information, beam phase compensation processing is not performed on the perception reference signal port, which may include but is not limited to at least one of the following implementations:

[0200] The first information does not indicate a first granularity of perception, and beam phase compensation processing is not performed on the perception reference signal port;

[0201] The first information indicates a second granularity of sensing, and beam phase compensation processing is not performed on the sensing reference signal port.

[0202] In some embodiments, not performing beam phase compensation processing on the sensing reference signal port may include: not performing beam phase compensation processing on any sensing reference signal port.

[0203] Step S4203: Send a sensing reference signal through beamforming.

[0204] In some embodiments, the sensing reference signal is precoded according to an original precoding vector of a sensing reference signal port, so that the sensing reference signal is sent through beamforming.

[0205] Optional implementations of step S4202 and step S4203 can refer to the optional implementation of step S3102 in FIG3 and other related parts in the embodiment involved in FIG3 , which will not be described in detail here.

[0206] According to the above embodiment, the transmitter or the electronic device in which it is located does not perform beam phase compensation processing on the perception reference signal port based on the first information. Since the beam is widened due to beam squint, the beam scanning period can be reduced, speeding up the beam scanning process, thereby achieving coarse-grained and rapid perception. In one example, for a perception target with a large cross-sectional area, the first information can be used to quickly complete perception using a coarse-grained, lower-precision perception using the wide beam caused by squint.

[0207] FIG4C is a flow chart of a beam transmission method according to an embodiment of the present disclosure. As shown in FIG4C , the embodiment of the present disclosure relates to a beam transmission method, which is applied to a transmitter or an electronic device in which the transmitter is located. The method includes:

[0208] Step S4301, receiving first information.

[0209] In some embodiments, the first information is used to determine whether to perform beam phase compensation processing.

[0210] The optional implementation of step S4301 can refer to the optional implementation of step S3101 in Figure 3, step S4101 in Figure 4A, step S4201 in Figure 4B, and other related parts in the embodiments involved in Figures 3, 4A, and 4B, which will not be repeated here.

[0211] Step S4302: Send a perception reference signal through beamforming based on the first information.

[0212] In some embodiments, the first information indicates a first granularity of perception, and the transmitter or the electronic device in which it is located performs beam phase compensation processing on at least one perception reference signal port and sends the perception reference signal through beamforming.

[0213] In some embodiments, the first information indicates the second granularity of perception, and the transmitter or the electronic device in which it is located does not perform beam phase compensation processing on any perception reference signal port and sends the perception reference signal through beamforming.

[0214] The optional implementation of step S4302 can be found in step S3102 of Figure 3, step S4102 and step S4103 of Figure 4A, step S4202 and the optional implementation of step S4203 of Figure 4B, and other related parts in the embodiments involved in Figures 3, 4A and 4B, which will not be repeated here.

[0215] FIG4D is a flow chart of a beam transmission method according to an embodiment of the present disclosure. As shown in FIG4D , the embodiment of the present disclosure relates to a beam transmission method, which is applied to a transmitter or an electronic device in which the transmitter is located. The method includes:

[0216] Step S4401, receiving first information.

[0217] The optional implementation of step S4401 can be found in the optional implementation of step S3101 in Figure 3, step S4101 in Figure 4A, step S4201 in Figure 4B, step S4301 in Figure 4C, and other related parts in the embodiments involved in Figures 3, 4A, 4B, and 4C, which will not be repeated here.

[0218] Step S4402, sending the first information.

[0219] In some embodiments, the first information is sent to an electronic device where the receiver is located.

[0220] According to the above embodiment, the electronic device where the transmitter is located receives the first information sent by the network device, and sends the first information to the electronic device where the receiver is located.

[0221] It can be understood that the various embodiments can be arbitrarily combined. For example, some or all of the steps of different embodiments can be arbitrarily combined. For example, the embodiment of Figure 4D can be arbitrarily combined with some or all of the steps of the embodiment of Figure 3, the embodiment of Figure 4D can be arbitrarily combined with some or all of the steps of the embodiment of Figure 4A, the embodiment of Figure 4D can be arbitrarily combined with some or all of the steps of the embodiment of Figure 4B, and the embodiment of Figure 4D can be arbitrarily combined with some or all of the steps of the embodiment of Figure 4C.

[0222] FIG5 is a flow chart of a method for sending information according to an embodiment of the present disclosure. As shown in FIG5 , the embodiment of the present disclosure relates to a method for sending information, which is applied to a network device. The method includes:

[0223] Step S5101, sending the first information.

[0224] In some embodiments, the first information is sent to an electronic device where the transmitter is located.

[0225] In some embodiments, the network device is, for example, an access network device or a core network device. In some embodiments, the network device includes a first network element. In some embodiments, the first network element is, for example, an LMF or an SMF. In some embodiments, the first network element may be configured to transmit first information to an electronic device where a transmitter resides, and / or process measurement results of a perception reference signal by an electronic device where a receiver resides, without limitation to these.

[0226] In some embodiments, the first information is used to determine whether to perform beam phase compensation processing.

[0227] For the optional implementation of step S5101, please refer to the optional implementation of step S3101 in Figure 3, step S4101 in Figure 4A, step S4201 in Figure 4B, step S4301 in Figure 4C, and step S4401 in Figure 4D, as well as other related parts in the embodiments involved in Figures 3, 4A, 4B, 4C, and 4D, which will not be repeated here.

[0228] It can be understood that the various embodiments can be arbitrarily combined. For example, some or all of the steps of different embodiments can be arbitrarily combined. For example, the embodiment of Figure 5 can be arbitrarily combined with some or all of the steps of the embodiment of Figure 3, the embodiment of Figure 5 can be arbitrarily combined with some or all of the steps of the embodiment of Figure 4A, the embodiment of Figure 5 can be arbitrarily combined with some or all of the steps of the embodiment of Figure 4B, the embodiment of Figure 5 can be arbitrarily combined with some or all of the steps of the embodiment of Figure 4C, and the embodiment of Figure 5 can be arbitrarily combined with some or all of the steps of the embodiment of Figure 4D.

[0229] FIG6 is a flow chart of a method for sending information according to an embodiment of the present disclosure. As shown in FIG6 , the embodiment of the present disclosure relates to a method for sending information, which is applied to a receiver or an electronic device in which the receiver is located. The method includes:

[0230] Step S6101, receiving first information.

[0231] In some embodiments, the first information sent by the electronic device where the transmitter is located is received, but this is not limited thereto, and the first information sent by other entities may also be received.

[0232] The optional implementation of step S6101 can refer to the optional implementation of step S4402 in Figure 4D and other related parts of the embodiment involved in Figure 4D, which will not be repeated here.

[0233] Step S6102: Send the measurement result.

[0234] In some embodiments, the measurement results are sent to a network device. In some embodiments, the network device is, for example, an access network device or a core network device. In some embodiments, the network device includes a first network element. In some embodiments, the first network element is, for example, an LMF or an SMF. In some embodiments, the first network element may be configured to send the first information to the electronic device where the transmitter resides and / or process the measurement results of the perception reference signal by the electronic device where the receiver resides, without limitation.

[0235] In some embodiments, the electronic device where the receiver is located measures the sensing reference signal and sends a measurement report to the first network element. The first network element calculates at least one of the distance, angle, speed, etc. of each sensing target and / or constructs a wireless sensing map.

[0236] Step S6103, sending the first information.

[0237] In some embodiments, first information is sent to the network device, and the first information is used to be associated with the measurement result.

[0238] In some embodiments, the first information is sent to the first network element.

[0239] According to the above embodiment, the electronic device where the receiver is located can send the measurement result and the associated first information to the first network element, so that when the first network element processes the measurement result, it can know whether the measurement result is based on the first granularity or the second granularity.

[0240] In some embodiments, step S6101 and step S6102 may be executed in an exchanged order or simultaneously, and step S6102 and step S6103 may be executed in an exchanged order or simultaneously.

[0241] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0242] According to an embodiment of the present disclosure, the LMF or SMF configures at least one granularity indicator (GI) for each sensing transmitter through signaling.

[0243] Optionally, the cognitive transmitter notifies the cognitive receiver of the GI through signaling.

[0244] Optionally, the above signaling includes but is not limited to DCI or RRC signaling.

[0245] Optionally, the GI may indicate at least two states, such as a first granularity (refined granularity) and a second granularity (coarse granularity).

[0246] The sensing transmitter sends a corresponding sensing reference signal according to the received GI.

[0247] Optionally, when the received GI indicates a first granularity, the sensing transmitter performs predistortion processing on at least one port of the sensing reference signal. Predistortion can compensate for and overcome beam squint, thereby enabling fine-grained, high-precision sensing. Each port of the sensing reference signal can be referred to as a sensing reference signal port.

[0248] Optionally, when the received GI indicates the second granularity, the sensing transmitter does not perform predistortion processing on the sensing reference signal. Since the beam squint widened beam can reduce the beam scanning period and speed up the beam scanning process, coarse-grained rapid sensing can be achieved.

[0249] Optionally, the above predistortion may introduce a phase rotation into each element of the precoding vector corresponding to each perceptual reference signal port.

[0250] Optionally, for optional implementation of the above pre-distortion, refer to the above description.

[0251] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by the electronic device where the transmitter resides in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., a core network function node, a core network device, etc.) in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by the electronic device where the receiver resides in any of the above methods.

[0252] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0253] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0254] Figure 7A is a schematic diagram of the structure of the perception device proposed in an embodiment of the present disclosure. As shown in Figure 7A, the perception device 7100 may include: at least one of a transceiver module 7101, a processing module 7102, etc. In some embodiments, the above-mentioned transceiver module is used to receive the first information. In some embodiments, the above-mentioned transceiver module is used to send a perception reference signal through beamforming based on the first information. Optionally, the above-mentioned transceiver module is used to execute at least one of the communication steps such as sending and / or receiving (for example, S3102, but not limited to this) performed by the electronic device where the transmitter is located in any of the above methods, which will not be repeated here. Optionally, the above-mentioned processing module is used to execute at least one of the other steps performed by the electronic device where the transmitter is located in any of the above methods, which will not be repeated here.

[0255] Figure 7B is a schematic diagram of the structure of the network device proposed in an embodiment of the present disclosure. As shown in Figure 7B, the network device 7200 may include: at least one of a transceiver module 7201, a processing module 7202, etc. In some embodiments, the transceiver module is used to send the first information. In some embodiments, the transceiver module is used to execute at least one of the communication steps such as sending and / or receiving (for example, S3101, but not limited to this) performed by the network device in any of the above methods, which will not be repeated here. Optionally, the processing module is used to execute at least one of the other steps performed by the network device in any of the above methods, which will not be repeated here.

[0256] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0257] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0258] Figure 8A is a schematic diagram of the structure of a communication device 8100 proposed in an embodiment of the present disclosure. Communication device 8100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 8100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0259] As shown in Figure 8A, the communication device 8100 includes one or more processors 8101. The processor 8101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control communication devices (such as base stations, baseband chips, terminal devices, terminal device chips, distributed units (DUs) or centralized units (CUs), etc.), execute programs, and process program data. The communication device 8100 is used to perform any of the above methods.

[0260] In some embodiments, the communication device 8100 further includes one or more memories 8102 for storing instructions. Optionally, all or part of the memories 8102 may be located outside the communication device 8100.

[0261] In some embodiments, the communication device 8100 further includes one or more transceivers 8103. When the communication device 8100 includes one or more transceivers 8103, the transceiver 8103 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S3101 and step S3102, but not limited thereto), and the processor 8101 performs at least one of the other steps.

[0262] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0263] In some embodiments, the communication device 8100 may include one or more interface circuits. Optionally, the interface circuits are connected to the memory 8102 and may be used to receive signals from the memory 8102 or other devices, or to send signals to the memory 8102 or other devices. For example, the interface circuits may read instructions stored in the memory 8102 and send the instructions to the processor 8101.

[0264] The communication device 8100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG. 8A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0265] FIG8B is a schematic diagram of the structure of a chip 8200 according to an embodiment of the present disclosure. If the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 8200 shown in FIG8B , but the present disclosure is not limited thereto.

[0266] The chip 8200 includes one or more processors 8201 , and the chip 8200 is configured to execute any of the above methods.

[0267] In some embodiments, the chip 8200 further includes one or more interface circuits 8202. Optionally, the interface circuit 8202 is connected to the memory 8203. The interface circuit 8202 can be used to receive signals from the memory 8203 or other devices, and can be used to send signals to the memory 8203 or other devices. For example, the interface circuit 8202 can read instructions stored in the memory 8203 and send the instructions to the processor 8201.

[0268] In some embodiments, the interface circuit 8202 executes at least one of the communication steps such as sending and / or receiving in the above method (for example, step S3101, step S3102, but not limited thereto), and the processor 8201 executes at least one of the other steps.

[0269] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0270] In some embodiments, the chip 8200 further includes one or more memories 8203 for storing instructions. Alternatively, all or part of the memories 8203 may be outside the chip 8200.

[0271] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto, and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto, and may also be a temporary storage medium.

[0272] The present disclosure also provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0273] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A beam transmission method, characterized in that: The method comprises: receiving first information indicating a granularity of perception; A perception reference signal is sent through beamforming based on the first information.

2. The method according to claim 1, characterized in that The sending a perception reference signal by beamforming based on the first information includes: The first information indicates a first granularity of perception, and performs beam phase compensation processing on a perception reference signal port; The perception reference signal is sent through beamforming.

3. The method according to claim 1, characterized in that The sending a perception reference signal by beamforming based on the first information includes: The first information indicates a second granularity of perception, and beam phase compensation processing is not performed on the perception reference signal port; The perception reference signal is sent through beamforming.

4. The method according to claim 2 or 3, characterized in that: The beam phase compensation process includes performing phase compensation on a precoding vector of a first frequency of the perception reference signal port.

5. The method according to claim 4, characterized in that The perception reference signal is a broadband signal, the narrowband subcarriers of the perception reference signal port include a first narrowband subcarrier and a second narrowband subcarrier, and the compensated precoding vector of the first narrowband subcarrier is different from the precoding vector of the second narrowband subcarrier.

6. The method according to claim 4, characterized in that The antenna array used to send the perception reference signal through beamforming is a uniform linear array, and the precoding vector before compensation is The phase rotation vector of the first frequency is The compensated precoding vector is a vector obtained by multiplying the precoding vector before compensation by a corresponding element of the phase rotation vector of the first frequency; Wherein, d is the antenna spacing of the antenna array, θ is the target direction of the beam corresponding to the sensing reference signal port, λ0 is the first wavelength, f0 is the second frequency, c is the speed of light, N t is the number of antenna ports contained in the antenna array, j is an imaginary unit, e is a natural constant, and r is the normalized frequency coefficient of the first frequency relative to the second frequency.

7. The method according to claim 4, characterized in that The antenna array used to send the perception reference signal through beamforming is a uniform linear array, and the precoding vector before compensation is expressed as The first frequency is v 0，i The phase rotation vector is The compensated precoding vector is expressed as The v r，i For the v 0，i With the v Δ，i The vector obtained by multiplying the corresponding elements of (r); Among them, v 0，i The dimension is N t The i-th column vector of the discrete Fourier transform DFT matrix, c i v 0，i The corresponding weighting coefficient, N t is the number of antenna ports contained in the antenna array, j is an imaginary unit, e is a natural constant, and r is the normalized frequency coefficient of the first frequency relative to the second frequency.

8. The method according to claim 4, characterized in that The antenna array used to send the perception reference signal through beamforming is a uniform array, and the compensated precoding vector is a Kronecker product between the compensated precoding vector of the horizontal dimension and the compensated precoding vector of the vertical dimension; The precoding vector of the horizontal dimension after compensation is a vector obtained by multiplying the precoding vector of the horizontal dimension before compensation by a corresponding element of a first phase rotation vector, and the first phase rotation vector is a phase rotation vector of the first frequency in the horizontal dimension; The precoding vector of the vertical dimension after compensation is a vector obtained by multiplying the precoding vector of the vertical dimension before compensation by corresponding elements of a second phase rotation vector, and the second phase rotation vector is a phase rotation vector of the first frequency in the vertical dimension.

9. The method according to claim 8, characterized in that The precoding vector of the horizontal dimension before compensation is The phase rotation vector of the first frequency in the horizontal dimension is The precoding vector of the vertical dimension before compensation is The phase rotation vector of the first frequency in the vertical dimension is Among them, d (h) is the antenna spacing of the antenna array in the horizontal dimension, d (v) is the antenna spacing of the antenna array in the vertical dimension, θ is the target pointing of the beam corresponding to the sensing reference signal port in the horizontal dimension, φ is the target pointing of the beam corresponding to the sensing reference signal port in the vertical dimension, λ0 is the first wavelength, f0 is the second frequency, c is the speed of light, is the number of antenna ports contained in the antenna array in the horizontal dimension, is the number of antenna ports contained in the vertical dimension of the antenna array, j is an imaginary unit, e is a natural constant, and r is the normalized frequency coefficient of the first frequency relative to the second frequency.

10. A method for sending information, characterized in that: Executed by a core network element, the method includes: First information is sent, the first information indicating a granularity of perception.

11. A beam transmission method, characterized in that: The method comprises: The core network element sends first information to the electronic device where the transmitter is located, where the first information indicates the granularity of perception; The electronic device where the transmitter is located sends a perception reference signal through beamforming based on the first information.

12. A sensing device, characterized in that: include: The transceiver module is configured to receive first information indicating a granularity of perception, and send a perception reference signal through beamforming based on the first information.

13. A network device, characterized in that: include: The transceiver module is configured to send first information, where the first information indicates the granularity of perception.

14. A sensing device, characterized in that: include: one or more processors; Wherein, the sensing device is used to execute the beam sending method described in any one of claims 1-9.

15. A network device, characterized in that: include: one or more processors; Wherein, the network device is used to execute the information sending method described in claim 10.

16. A perception system, characterized in that: The invention comprises a transmitter and a receiver, wherein the transmitter is configured to implement the beam transmission method according to any one of claims 1 to 9.

17. A storage medium storing instructions, characterized in that: When the instruction is executed on the communication device, the communication device executes the beam sending method as described in any one of claims 1 to 9, or executes the information sending method as described in claim 10.

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