Beam search method, system and electronic device

Abstract

This application discloses a beam search method, system, and electronic device. The method includes: determining the first communication spectral efficiency of the communication beam receiving the first reference signal transmitted by the base station corresponding to each first grid point within a preset terminal beam grid; determining a high spectral efficiency region for the terminal within the terminal beam grid based on the first communication spectral efficiency of the communication beams corresponding to each first grid point; arranging the second communication spectral efficiency of the communication beams receiving the first reference signal corresponding to each candidate grid point within the high spectral efficiency region of the terminal in descending order, and determining the communication beam of the target grid point corresponding to the Xth second communication spectral efficiency as the target communication beam corresponding to the Xth radio frequency link of the terminal to be communicated. This application solves the technical problem that the method of traversing to search for the optimal beam pair for communication in related technologies cannot meet the low latency requirements in ultra-large-scale multiple-input multiple-output scenarios.

Description

Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a beam search method, system, and electronic device. Background Technology

[0002] Currently, the highest number of antennas deployed in 5G macro base stations by major operators is 64, and the commercial frequency band is sub-6GHz. Commercial 5G deployment in the FR2 (24.25GHz-52.6GHz) millimeter-wave band has not yet been achieved. Compared to the existing 3.5GHz band, the millimeter-wave band requires 256, 512, or more antennas to be deployed at the base station to obtain sufficient beamforming gain through massive MIMO to counteract the path loss caused by higher frequencies.

[0003] Because millimeter-wave frequencies require a larger number of antennas to be deployed at the base station, the base station and the terminal will use narrower beams for communication. This means that finding the optimal or superior beam pair is necessary to achieve high spectral efficiency when the base station communicates with the user terminal. Furthermore, the more antennas there are, the narrower the beamwidth becomes. This means that the base station needs to expend more time-domain and frequency-domain resources for beam searching with the user terminal. Existing solutions cannot meet the low-latency requirements of real-world systems in ultra-large-scale MIMO (Multiple-Input and Multiple-Output) scenarios.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This application provides a beam search method, system, and electronic device to at least solve the technical problem that the method of communication by traversing to search for the optimal beam pair cannot meet the low latency requirements in ultra-large-scale multiple-input multiple-output scenarios.

[0006] According to one aspect of the embodiments of this application, a beam search method is provided, applied to a terminal, wherein a communication connection is established between the terminal and a base station, the terminal deploys M terminal radio frequency links, and each terminal radio frequency link connects to multiple terminal antennas, where M is a positive integer greater than or equal to zero, comprising: determining the first communication spectrum efficiency of the communication beam receiving the first reference signal transmitted by the base station corresponding to each first grid point in a preset terminal beam grid, wherein the terminal beam grid includes first grid points arranged in a multi-row, multi-column format, each first grid point corresponding to a communication beam in a different direction, and each first grid point in each row or column corresponding to... The communication beam directions are similar; based on the first communication spectral efficiency of the communication beams corresponding to each first grid point, a high spectral efficiency region of the terminal is determined within the terminal beam grid; the second communication spectral efficiency of the communication beams corresponding to each candidate grid point within the high spectral efficiency region of the terminal receiving the first reference signal is arranged in descending order, and the communication beam of the target grid point corresponding to the Xth second communication spectral efficiency is determined as the target communication beam corresponding to the Xth terminal radio frequency link to be communicated, where the terminal radio frequency link to be communicated is any one of the M terminal radio frequency links, and X is a positive integer less than or equal to M.

[0007] Optionally, determining the first communication spectrum efficiency of the first reference signal transmitted by the communication beam receiving base station corresponding to each first grid point in the preset terminal beam grid includes: using the first reference signal transmitted by the communication beam receiving base station corresponding to each first grid point in the terminal beam grid to determine the first communication spectrum efficiency of the communication beam corresponding to each first grid point.

[0008] Optionally, determining the high spectral efficiency region of the terminal within the terminal beam grid based on the first communication spectral efficiency of the communication beams corresponding to each first grid point includes: determining the second grid point with the highest first communication spectral efficiency within the terminal beam grid, and the third grid point with the second highest first communication spectral efficiency adjacent to the second grid point, based on the first communication spectral efficiency of the communication beams corresponding to each first grid point; and determining the high spectral efficiency region of the terminal within the terminal beam grid based on the second grid point and the third grid point.

[0009] Optionally, determining the high spectral efficiency region of the terminal within the terminal beam grid based on the second grid point and the third grid point includes: determining the high spectral efficiency region of the terminal within the terminal beam grid with the second grid point as the center and the distance between the second grid point and the third grid point as the radius.

[0010] Optionally, the second communication spectrum efficiency of the communication beams corresponding to each candidate grid point in the high spectrum efficiency region of the terminal receiving the first reference signal is arranged in descending order, and the communication beam of the target grid point corresponding to the Xth second communication spectrum efficiency is determined as the target communication beam corresponding to the Xth terminal radio frequency link to be communicated. This includes: determining the second communication spectrum efficiency of the communication beams corresponding to each candidate grid point in the high spectrum efficiency region of the terminal receiving the first reference signal, and arranging the second communication spectrum efficiency in descending order to obtain a first arrangement order; and taking the communication beam corresponding to the target grid point of the Xth second communication spectrum efficiency in the first arrangement order as the target communication beam corresponding to the Xth terminal radio frequency link to be communicated.

[0011] Optionally, the communication beam corresponding to the target grid point with the Xth second communication spectrum efficiency in the first arrangement order is taken as the target communication beam corresponding to the Xth terminal radio frequency link to be communicated, including: when X is 1, the communication beam corresponding to the first target grid point with the highest second spectrum efficiency in the first arrangement order is taken as the first target communication beam corresponding to the first terminal radio frequency link to be communicated; when X is i, the second arrangement order of the second communication spectrum efficiency of X-1 candidate grid points in the high spectrum efficiency area of ​​the terminal (excluding the first target grid point) is determined, and the communication beam corresponding to the second target grid point with the ith second communication spectrum efficiency in the second arrangement order is taken as the second target communication beam corresponding to the ith terminal radio frequency link to be communicated, where i is greater than or equal to 1 and i is less than or equal to X.

[0012] Optionally, determining the second arrangement order of the second communication spectrum efficiency of X-1 candidate grid points (excluding the first target grid point) within the high spectrum efficiency region of the terminal includes: arranging the second communication spectrum efficiency of the communication beams corresponding to the X-1 candidate grid points (excluding the first target grid point) within the high spectrum efficiency region of the terminal in descending order to obtain the second arrangement order.

[0013] According to another aspect of the embodiments of this application, a beam search method is also provided, applied to a base station, wherein a communication connection is established between the base station and a terminal, the base station deploys N base station radio frequency links and each base station radio frequency link connects to multiple base station antennas, N is a positive integer greater than or equal to zero, including: determining the third communication spectrum efficiency of the second reference signal transmitted by the communication beam receiving terminal corresponding to each fourth grid point in a preset base station beam grid, wherein the base station beam grid includes fourth grid points arranged in a multi-row, multi-column format, each fourth grid point corresponds to a communication beam in a different direction, and each fourth grid point in each row or column corresponds to a communication beam in a different direction. The corresponding communication beam directions are similar; based on the third communication spectral efficiency of the communication beams corresponding to each fourth grid point, the high spectral efficiency region of the base station is determined within the base station beam grid; the fourth communication spectral efficiency of the communication beams corresponding to each candidate grid point within the high spectral efficiency region of the base station receiving the second reference signal is arranged in descending order, and the communication beam of the target grid point corresponding to the Yth fourth communication spectral efficiency is determined as the target communication beam corresponding to the Yth base station radio frequency link to be communicated, where the base station radio frequency link to be communicated is any one of the Y base station radio frequency links, and Y is a positive integer less than or equal to N.

[0014] According to another aspect of the embodiments of this application, a beam search system is also provided. The beam search system includes a base station and a terminal. A communication connection is established between the base station and the terminal. The base station deploys N base station radio frequency links, and each base station radio frequency link is connected to multiple base station antennas. The terminal deploys M terminal radio frequency links, and each terminal radio frequency link is connected to multiple terminal antennas. M and N are positive integers greater than or equal to zero. The terminal is used to determine the first communication spectrum efficiency of the communication beam receiving the first reference signal transmitted by the base station corresponding to each first grid point in a preset terminal beam grid. The terminal beam grid includes first grid points arranged in a multi-row, multi-column format. Each first grid point corresponds to a communication beam in a different direction, and the communication beam directions corresponding to each first grid point in each row or column are similar. Based on the first communication spectrum efficiency of the communication beams corresponding to each first grid point, a high spectrum efficiency region of the terminal is determined in the terminal beam grid. The second communication spectrum efficiency of the communication beams receiving the first reference signal corresponding to each candidate grid point in the high spectrum efficiency region of the terminal is arranged in descending order, and the communication beam of the target grid point corresponding to the Xth second communication spectrum efficiency is determined as the target grid point. The target communication beam corresponds to the Xth radio frequency link of the terminal to be communicated, where the radio frequency link of the terminal to be communicated is any one of the M terminal radio frequency links, and X is a positive integer less than or equal to M; the base station is used to determine the third communication spectral efficiency of the second reference signal transmitted by the communication beam receiving terminal corresponding to each fourth grid point in the preset base station beam grid, wherein the base station beam grid includes fourth grid points arranged in a multi-row, multi-column format, each fourth grid point corresponds to a communication beam in a different direction, and the communication beam directions corresponding to each fourth grid point in each row or column are similar. Based on the third communication spectrum efficiency of the communication beams corresponding to each fourth grid point, a high spectrum efficiency region of the base station is determined within the base station beam grid. The fourth communication spectrum efficiency of the communication beams corresponding to each candidate grid point within the high spectrum efficiency region of the base station receiving the second reference signal is arranged in descending order. The communication beam of the target grid point corresponding to the Yth fourth communication spectrum efficiency is determined as the target communication beam corresponding to the Yth base station radio frequency link to be communicated. Here, the base station radio frequency link to be communicated is any one of the Y base station radio frequency links, and Y is a positive integer less than or equal to N.

[0015] According to another aspect of the embodiments of this application, an electronic device is also provided, the electronic device including: a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the above-described beam search method through the computer program.

[0016] In this embodiment, the first communication spectrum efficiency of the communication beam receiving the first reference signal transmitted by the base station corresponding to each first grid point in the preset terminal beam grid is determined. The terminal beam grid includes first grid points arranged in a multi-row, multi-column format, each first grid point corresponding to a communication beam in a different direction, and the communication beam directions corresponding to each first grid point in each row or column are similar. Based on the first communication spectrum efficiency of the communication beams corresponding to each first grid point, a high-spectral-efficiency region of the terminal is determined in the terminal beam grid. The second communication spectrum efficiency of the communication beams receiving the first reference signal corresponding to each candidate grid point in the high-spectral-efficiency region of the terminal is arranged in descending order, and the communication beam of the target grid point corresponding to the Xth second communication spectrum efficiency is determined as the target communication beam corresponding to the Xth terminal radio frequency link to be communicated. The terminal radio frequency link to be communicated is any one of the M terminal radio frequency links, and X is a positive integer less than or equal to M.

[0017] In the above process, the solution of this application adopts the adjacent space search method to select the candidate region composed of the beam direction with the highest and second highest spectral efficiency as the search region of the radio frequency link, thereby reducing the number of beam searches and search complexity, and thus solving the technical problem that the method of traversing to search for the optimal beam pair for communication in related technologies cannot meet the low latency requirements in ultra-large-scale multiple-input multiple-output scenarios. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of an optional transceiver according to an embodiment of this application;

[0020] Figure 2 This is a flowchart of an optional beam search method according to an embodiment of this application;

[0021] Figure 3 This is a schematic diagram of an optional beam grid according to an embodiment of this application;

[0022] Figure 4 This is a flowchart of another optional beam search method according to an embodiment of this application;

[0023] Figure 5 This is a comparative diagram showing the complexity of an optional beam search algorithm according to an embodiment of this application;

[0024] Figure 6This is a comparative diagram of the performance of an optional beam search algorithm according to an embodiment of this application;

[0025] Figure 7 This is a schematic diagram of an optional beam search system according to an embodiment of this application;

[0026] Figure 8 This is an interactive flowchart of an optional beam search system according to an embodiment of this application;

[0027] Figure 9 This is a schematic diagram of an optional beam search device according to an embodiment of this application;

[0028] Figure 10 This is a schematic diagram of another optional beam search device according to an embodiment of this application. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] It should be noted that the terms "first," "second," etc., used in the specification, claims, and drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] Furthermore, all information and data (including but not limited to user device information, user personal information, etc.) involved in this application are information and data authorized by the user or fully authorized by all parties. For example, this system has an interface with the relevant user or organization. Before obtaining relevant information, it needs to send an acquisition request to the aforementioned user or organization through the interface, and obtain the relevant information after receiving consent from the aforementioned user or organization.

[0032] Example 1

[0033] Figure 1 This is a schematic diagram of an optional transceiver according to an embodiment of this application, as shown below. Figure 1 As shown, the embodiments of this application can be applied to a downlink single-cell system with a partially connected analog-digital hybrid processing architecture between the transceiver and receiver. In this partially connected architecture, each radio frequency link is not connected to only one antenna, but rather one radio frequency link can connect to multiple antennas.

[0034] Specifically, the transmitting base station mainly consists of a digital precoding section at the back end of the radio frequency link and an analog precoding section at the front end of the radio frequency link; the receiving terminal mainly consists of an analog combining section at the front end of the link and a digital combining section at the back end of the radio frequency link. N is deployed on the base station side. BS The base station antenna is connected to M in a partially connected manner. BS Each base station radio frequency link serves a single terminal, and each base station radio frequency link connects N RFBS One antenna; the receiver is equipped with N antennas. MS The antenna is connected to M in the same way. MS On each of the RF links, N are connected. RFMS One antenna, supporting the transmission of N during communication. s There are N data streams. s ≥1.

[0035] At the transmitting end (i.e., the base station side), the dimension is N. s The complex symbol s of ×1 first passes through a dimension of M. BS ×N s The baseband (digital) precoding matrix F BB Perform digital precoding, and then pass through a dimension of N BS ×M BS Radio frequency (analog) precoding matrix F RF After performing analog precoding, it can be obtained from N BS The antenna transmits in beam form. Therefore, the complex-valued signal transmitted at the transmitting end (base station side) can be represented by the following formula:

[0036] x = F RF F BB

[0037] Among them, the transmitted signal s must satisfy ρ represents the average transmission power.

[0038] At the receiving end (i.e., the terminal side), N MS The signal received by the antenna first passes through a dimension of N MS ×M MS RF (analog) combiner W RFPerform simulated merging when the received signal passes through a dimension of M MS ×N s Baseband (digital) combiner W BB After digital combining, the data sent by the transmitter can be obtained. The received data y can be given by the following formula:

[0039]

[0040] Where H represents a dimension of N MS ×N BS The channel matrix is ​​given, and the equivalent baseband channel of the terminal is defined as follows: n is additive white Gaussian noise with a mean of 0 and a variance of σ. 2 The complex Gaussian distribution.

[0041] In a partially connected structure, the radio frequency (analog) precoding matrix F RF A matrix with a special diagonal matrix structure is specifically expressed as:

[0042]

[0043] in, i∈{1,…,M BS}, f i Let F represent the non-zero precoding weighting vector of the i-th subarray of the base station. Since the analog precoder cannot adjust the amplitude of the transmitted signal and is limited by power, F... RF Each element in must satisfy j∈{1,…,N RF_BS},and ||·|| F It is the Frobenius norm.

[0044] Similarly, the radio frequency (analog) combiner W RF It can also be represented in the following matrix form:

[0045]

[0046] in, i∈{1,…,M MS}, w i Let W represent the non-zero merged weighted vector of the i-th subarray of the user. Similarly, W RF Each element in must satisfy and

[0047] The hybrid beamformer consists of the digital precoding matrix F of the baseband mentioned above. BB / Merge matrix W BB and the analog precoding matrix F at the radio frequency end RF / Merge matrix W RF The design of hybrid beamformers typically employs a two-step approach: first, designing the transmitting-end analog precoding matrix F based on the actual channel H. RF And the receiving end simulation merging matrix W RF Then, based on the equivalent baseband channel Design the starting digital precoding matrix F BB and receiving end digital merging matrix W BB .

[0048] Analog precoding matrix F RF With the merged matrix W RF The design of beamforming is typically implemented using a codebook-based beam search method. The simplest approach involves simulating a precoder and a combiner to traverse a predetermined set of beamforming codebooks, selecting the optimal beamforming vector combination and the optimal combining vector combination that maximizes spectral efficiency to construct the simulated precoding matrix and simulated combining matrix, respectively. In this embodiment, the beamforming codebook set used is a Discrete Fourier Transform (DFT) codebook, where the weighting coefficient Q of the nth antenna in the m-th codeword is... m，n As given by equation (1-3):

[0049]

[0050] Where M is the number of codewords, N is the number of antennas connected to each radio frequency link, and the codebook set is the set containing all codewords in the codebook. The base station has a total of N codewords in its codebook. RF_BS There are N code words, and the user's codebook has a total of N. RF_MS Each codeword. Since there are many and mature digital precoding and merging schemes, the difficulty in beam searching lies in how to determine the analog precoding and merging matrix. Therefore, this patent studies how to determine the analog beamforming matrix.

[0051] To quickly obtain the analog precoding W RF This application provides a beam search method for a terminal, wherein a communication connection is established between the terminal and a base station, the terminal deploys M terminal radio frequency links, and each terminal radio frequency link connects to multiple terminal antennas, where M is a positive integer greater than or equal to zero. The specific process of this method will be described in detail below.

[0052] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0053] Figure 2This is a flowchart illustrating an optional beam search method according to an embodiment of this application, as shown below. Figure 2 As shown, the method includes at least steps S202-S206, wherein:

[0054] Step S202: Determine the first communication spectrum efficiency of the first reference signal sent by the communication beam receiving base station corresponding to each first grid point in the preset terminal beam grid.

[0055] In the technical solution provided in step S202, when determining the beam pair used between the base station and the terminal, the base station can typically send an omnidirectional reference signal to the terminal. The terminal can use multiple available communication beams to receive the reference signal respectively, in order to determine the communication beam with high communication spectral efficiency. Furthermore, to improve the search efficiency for communication beams with high communication spectral efficiency and reduce latency, a terminal beam grid can be set based on a preset codebook. Since the preset codebook records multiple communication beams available to the terminal, a terminal beam grid can be constructed based on the terminal's preset codebook. This terminal beam grid includes first grid points arranged in a multi-row, multi-column format, with each first grid point corresponding to a communication beam in a different direction, and the communication beam directions corresponding to each first grid point in each row or column being similar.

[0056] For example, Figure 3 This is a schematic diagram of an optional beam grid according to an embodiment of this application, such as... Figure 3 As shown, the grid includes grid points arranged in multiple rows and columns. Each grid point corresponds to a communication beam in a different direction, and the directions of the communication beams corresponding to each point in each column (i.e., the row or column containing each circular or diamond-shaped point) are similar. For example, the communication beam methods corresponding to points (1,1), (1,3), and (1,5) are similar. Subsequently, the communication beam corresponding to any selected point can be used to receive the reference signal. In addition, each vertex of the grid is a codeword in the codebook (i.e., a communication beam in a certain direction), and each grid point in the figure can be regarded as a cyclically shifted point, that is, the point to the left of the coordinate (1,1) is (1,8), and the point above the point (1,1) is (8,1).

[0057] It should be noted that each point in the beam grid represents a communication beam in one direction. Figure 3 The grid in the diagram is merely a schematic representation to illustrate the search algorithm and its description. When using this algorithm in a live network, the communication beams can be logically arranged by sequence number; for example, they can be arranged according to their communication beam sequence number... Figure 3Points (1,1) to (8,8) are arranged sequentially. However, regardless of the arrangement, this is merely a logical arrangement of the communication beams, used solely for the purpose of recording the algorithm's search results and illustrating the embodiments of this invention. It is independent of user hardware and requires no modification to existing hardware; the algorithm can be implemented simply through software upgrades and is applicable to current network communications. When using this algorithm in a live network, only beams in different directions need to be used to receive reference signals.

[0058] As an optional implementation, in the technical solution provided in step S202 above, the method may include: using the communication beam corresponding to each first grid point in the terminal beam grid to receive the first reference signal sent by the base station, and determining the first communication spectrum efficiency of the communication beam corresponding to each first grid point.

[0059] In this embodiment, to facilitate the rapid location of the communication beam corresponding to the optimal communication spectral efficiency from the terminal beam grid, the first communication spectral efficiency of the communication beam corresponding to the first reference signal omnidirectionally transmitted by the base station at each first grid point within the terminal beam grid can be determined. The first communication spectral efficiency of the communication beam corresponding to each first grid point can be calculated as follows:

[0060]

[0061] Where ρ is the received signal power, σ 2 This represents noise power.

[0062] Step S204: Determine the high spectral efficiency region of the terminal within the terminal beam grid based on the first communication spectral efficiency of the communication beam corresponding to each first grid point.

[0063] In the technical solution provided in step S204, the region where the grid point with the highest first communication spectrum efficiency is located can be determined based on the first communication spectrum efficiency of the communication beam corresponding to each first grid point, and this region can be used as the high spectrum efficiency region of the terminal.

[0064] As an optional implementation, in the technical solution provided in step S204 above, the method may include: determining the second grid point with the highest first communication spectrum efficiency in the terminal beam grid and the third grid point with the second highest first communication spectrum efficiency adjacent to the second grid point, based on the first communication spectrum efficiency of the communication beam corresponding to each first grid point; and determining the high spectrum efficiency region of the terminal in the terminal beam grid based on the second grid point and the third grid point.

[0065] In this embodiment, based on the first communication spectral efficiency of the communication beam corresponding to each first grid point, the second grid point with the highest first communication spectral efficiency is first determined. Simultaneously, considering that there may be multiple points with the second highest communication spectral efficiency within the terminal beam grid, to determine the minimum beam search range, this embodiment selects the grid point with the second highest first communication spectral efficiency as the grid point adjacent to the second grid point. Then, the high spectral efficiency region of the terminal is determined based on these two grid points. Thus, based on the communication beam direction corresponding to the highest communication spectral efficiency point and the adjacent second-highest point, a search region with the highest spectral efficiency among all receiving directions can be determined, and this region can be used as a candidate region for communication beam search for any terminal RF link.

[0066] Alternatively, the high spectral efficiency region of the terminal can be determined according to the following rule: the high spectral efficiency region of the terminal is determined within the terminal beam grid with the second grid point as the center and the distance between the second grid point and the third grid point as the radius.

[0067] Specifically, with Figure 3 Taking an example, suppose that the communication beam corresponding to point A has the highest first communication spectral efficiency in receiving the first reference signal, and point B is the next highest efficiency point for the corresponding communication beam to receive the first reference signal. The next search range (the search area within the dashed box), i.e., the high spectral efficiency region of the terminal, is determined with point A as the center and the distance between points A and B as the radius. However, if the communication beam corresponding to point B has the highest first communication spectral efficiency in receiving the first reference signal, and point A is the next highest efficiency point for the corresponding communication beam to receive the first reference signal, then the next search range (the search area within the dashed box) is determined with point B as the center and the distance between points A and B as the radius.

[0068] Step S206: Arrange the second communication spectrum efficiency of the communication beams corresponding to each candidate grid point in the high spectrum efficiency region of the terminal in descending order, and determine the communication beam of the target grid point corresponding to the Xth second communication spectrum efficiency as the target communication beam of the Xth terminal radio frequency link to be communicated.

[0069] In the technical solution provided in step S206, since the terminal deploys M terminal radio frequency links and M is a positive integer greater than or equal to zero, the aforementioned Xth terminal radio frequency link to be communicated can be understood as any one of the M terminal radio frequency links from which the Xth communication is initiated, and X is a positive integer less than or equal to M.

[0070] As an optional implementation, in the technical solution provided in step S206 above, the method may include steps S2061-S2062, wherein:

[0071] Step S2061: Determine the second communication spectrum efficiency of the communication beam receiving the first reference signal corresponding to each candidate grid point in the high spectrum efficiency area of ​​the terminal, and arrange the second communication spectrum efficiency in descending order to obtain the first arrangement order.

[0072] In the technical solution provided in step S2061, the second communication spectrum efficiency of the communication beam receiving the first reference signal corresponding to each candidate grid point in the high spectrum efficiency region of the terminal can be determined according to the frequency efficiency calculation formula, and the obtained second communication spectrum efficiency can be arranged in descending order to obtain the first arrangement order.

[0073] It should be noted that the communication spectral efficiency of the communication beam receiving the first reference signal for some grid points within the high spectral efficiency region of the terminal has already been determined in step S202. For example... Figure 3 As shown in the figure, the communication spectrum efficiency of points A, B, and the points marked with "circles" has been determined in step S202. Therefore, at this time, it is only necessary to determine the communication spectrum efficiency of the communication beam receiving reference signal corresponding to the point marked with "square".

[0074] Step S2062: The communication beam corresponding to the target grid point with the second communication spectrum efficiency in the first arrangement order is taken as the target communication beam corresponding to the radio frequency link of the Xth terminal to be communicated.

[0075] In the technical solution provided in step S2062, the first arrangement order is used to reflect the order of the second communication spectrum efficiency of the communication beams corresponding to the X candidate grid points. Therefore, the communication beams corresponding to the target grid points with the second communication spectrum efficiency can be selected sequentially as the target communication beams corresponding to one of the terminal radio frequency links selected from the M terminal radio frequency links in the Xth time, according to the first arrangement order.

[0076] Optionally, when X is 1, the communication beam corresponding to the first target grid point with the highest second spectral efficiency in the first arrangement order is taken as the first target communication beam corresponding to the first radio frequency link of the terminal to be communicated; when X is i, the second arrangement order of the second communication spectral efficiency of X-1 candidate grid points in the high spectral efficiency area of ​​the terminal (excluding the first target grid point) is determined, and the communication beam corresponding to the second target grid point with the second second communication spectral efficiency in the second arrangement order is taken as the second target communication beam corresponding to the i-th radio frequency link of the terminal to be communicated, where i is greater than or equal to 1 and i is less than or equal to X.

[0077] The second arrangement order of the aforementioned second communication spectrum efficiency can be directly determined as follows: Arrange the second communication spectrum efficiency of the communication beams receiving the first reference signal for the X-1 candidate grid points (excluding the first target grid point) within the high spectrum efficiency region of the terminal in descending order to obtain the second arrangement order. Alternatively, it can be directly determined based on the first arrangement order of the second communication spectrum efficiency.

[0078] Specifically, the communication beam corresponding to the first target grid point with the highest second spectral efficiency in the first arrangement can be used as the first target communication beam corresponding to the first communication terminal RF link. The communication beam used by the subsequent second communication terminal RF link (i.e., the terminal RF link selected from M terminal RF links for the second time) is arranged in descending order of the second communication spectral efficiency of the communication beams corresponding to the X-1 candidate grid points (excluding the first target grid point) in the high spectral efficiency area of ​​the terminal to receive the first reference signal. The communication beam corresponding to the second target grid point with the highest second communication spectral efficiency in the second arrangement is used as the second target communication beam corresponding to the second communication terminal RF link, and so on.

[0079] Based on the scheme defined in steps S202 to S206 above, it can be understood that, in the embodiment, the first communication spectrum efficiency of the communication beam receiving the first reference signal transmitted by the base station corresponding to each first grid point in the preset terminal beam grid is determined. The terminal beam grid includes first grid points arranged in a multi-row, multi-column format, each first grid point corresponding to a communication beam in a different direction, and the communication beam directions corresponding to each first grid point in each row or column are similar. Based on the first communication spectrum efficiency of the communication beams corresponding to each first grid point, a high-spectral-efficiency region for the terminal is determined within the terminal beam grid. The second communication spectrum efficiency of the communication beams receiving the first reference signal corresponding to each candidate grid point within the high-spectral-efficiency region of the terminal is arranged in descending order. The communication beam of the target grid point corresponding to the Xth second communication spectrum efficiency is determined as the target communication beam corresponding to the Xth terminal radio frequency link to be communicated. The terminal radio frequency link to be communicated is any one of the M terminal radio frequency links, and X is a positive integer less than or equal to M.

[0080] In the above process, the present application adopts a neighboring space search method to select the candidate region composed of the beam direction with the highest and second highest spectral efficiency as the search region of the radio frequency link, thereby reducing the number of beam searches and the search complexity. This makes the embodiments of the present invention applicable to existing 32TR (Transceiver) and 64TR base stations, as well as the 256TR base stations to be applied in the future. This solves the technical problem that the method of traversing to search for the optimal beam pair for communication in related technologies cannot meet the low latency requirements in ultra-large-scale multiple-input multiple-output scenarios.

[0081] In addition, in order to quickly obtain the analog precoding W RF This application provides another beam search method for base stations, wherein a communication connection is established between the base station and the terminal, and the base station deploys N base station radio frequency links, each of which connects to multiple base station antennas, where N is a positive integer greater than or equal to zero. The specific implementation of this method will be described in detail below.

[0082] Figure 4 This is a flowchart illustrating another optional beam search method according to an embodiment of this application, such as... Figure 4 As shown, the method includes at least steps S402-S406, wherein:

[0083] Step S402: Determine the third communication spectrum efficiency of the second reference signal transmitted by the communication beam receiving terminal corresponding to each fourth grid point in the preset base station beam grid.

[0084] In the technical solution provided in step S402, typically, when determining the beam pair used between the base station and the terminal, the terminal can send an omnidirectional reference signal to the base station. The base station can use multiple available communication beams to receive the reference signal respectively, in order to determine the communication beam with high communication spectral efficiency. Furthermore, to improve the search efficiency for communication beams with high communication spectral efficiency and reduce latency, a base station beam grid can be set based on a preset codebook. Since the preset codebook records multiple communication beams available to the base station, a base station beam grid can be constructed based on the base station's preset codebook. This base station beam grid includes fourth grid points arranged in a multi-row, multi-column format. Each fourth grid point corresponds to a communication beam in a different direction, and the communication beam directions corresponding to each fourth grid point in each row or column are similar.

[0085] Step S404: Determine the high spectral efficiency region of the base station within the base station beam grid based on the third communication spectral efficiency of the communication beam corresponding to each fourth grid point.

[0086] In the technical solution provided in step S404, the region where the grid point with the highest third communication spectrum efficiency is located can be determined based on the third communication spectrum efficiency of the communication beam corresponding to each fourth grid point, and this region can be used as the high spectrum efficiency region of the base station.

[0087] As an optional implementation, in the technical solution provided in step S402 above, the method may include: determining the fifth grid point with the highest third communication spectrum efficiency in the base station beam grid and the sixth grid point with the second highest third communication spectrum efficiency adjacent to the fifth grid point, based on the third communication spectrum efficiency of the communication beam corresponding to each fourth grid point; and determining the high spectrum efficiency region of the base station in the base station beam grid based on the fifth grid point and the sixth grid point.

[0088] In this embodiment, based on the third communication spectral efficiency of the communication beams corresponding to each fourth grid point, the fifth grid point with the highest third communication spectral efficiency is first determined. Simultaneously, considering that there may be multiple points with the second highest communication spectral efficiency within the base station beam grid, to determine the minimum beam search range, the grid point with the second highest third communication spectral efficiency selected in this embodiment is the grid point adjacent to the fifth grid point. Then, the high spectral efficiency region of the base station is determined based on these two grid points. Thus, based on the communication beam direction corresponding to the highest communication spectral efficiency point and the adjacent second-highest point, a search region with the highest spectral efficiency among all receiving directions can be determined, and this region can be used as a candidate region for communication beam searching for any base station radio frequency link.

[0089] Alternatively, the high spectral efficiency region of the base station can be determined according to the following rule: the high spectral efficiency region of the base station is determined within the base station beam grid with the fifth grid point as the center and the distance between the fifth grid point and the sixth grid point as the radius.

[0090] Step S406: Arrange the fourth communication spectrum efficiency of the communication beams receiving the second reference signal in descending order for each candidate grid point in the high spectrum efficiency area of ​​the base station, and determine the communication beam of the target grid point corresponding to the Yth fourth communication spectrum efficiency as the target communication beam of the Yth base station radio frequency link to be communicated.

[0091] In the technical solution provided in step S406, since the base station deploys N base station radio frequency links and N is a positive integer greater than or equal to zero, the aforementioned Y-th base station radio frequency link to be communicated can be understood as any one of the N base station radio frequency links from which the Y-th communication is performed, where Y is a positive integer less than or equal to N.

[0092] As an optional implementation, in the technical solution provided in step S406 above, the method may include steps S4061-S4062, wherein:

[0093] Step S4061: Determine the fourth communication spectrum efficiency of the communication beam receiving the second reference signal corresponding to each candidate grid point in the high spectrum efficiency area of ​​the base station, and arrange the fourth communication spectrum efficiency in descending order to obtain the third arrangement order.

[0094] In the technical solution provided in step S4061, the fourth communication spectrum efficiency of the communication beam receiving the second reference signal corresponding to each candidate grid point in the high spectrum efficiency area of ​​the base station can be determined according to the frequency efficiency calculation formula, and the obtained fourth communication spectrum efficiency can be arranged in descending order to obtain the third arrangement order.

[0095] Step S4062: The communication beam corresponding to the target grid point of the fourth communication spectrum efficiency in the third arrangement order is taken as the target communication beam corresponding to the radio frequency link of the Yth base station to be communicated.

[0096] In the technical solution provided in step S4062, the third arrangement order is used to reflect the order of the fourth communication spectrum efficiency of the communication beams corresponding to the Y candidate grid points. Therefore, the communication beams corresponding to the target grid points with the fourth communication spectrum efficiency can be selected sequentially as the target communication beams corresponding to one of the base station radio frequency links selected from the N base station radio frequency links in the Yth time, according to the third arrangement order.

[0097] Optionally, when Y is 1, the communication beam corresponding to the first target grid point with the highest fourth spectral efficiency in the third arrangement order is taken as the first target communication beam corresponding to the first radio frequency link of the base station to be communicated; when Y is j, the fourth arrangement order of the fourth communication spectral efficiency of Y-1 candidate grid points other than the first target grid point in the high spectral efficiency area of ​​the base station is determined, and the communication beam corresponding to the second target grid point with the jth fourth communication spectral efficiency in the fourth arrangement order is taken as the second target communication beam corresponding to the jth radio frequency link of the base station to be communicated, where j is greater than or equal to 1 and j is less than or equal to Y.

[0098] The fourth arrangement order of the aforementioned fourth communication spectrum efficiency can be directly determined as follows: Arrange the fourth communication spectrum efficiency of the communication beams receiving the second reference signal for the Y-1 candidate grid points (excluding the first target grid point) within the high spectrum efficiency area of ​​the base station in descending order to obtain the fourth arrangement order. Alternatively, it can be directly determined based on the third arrangement order of the fourth communication spectrum efficiency.

[0099] Specifically, the communication beam corresponding to the first target grid point with the highest fourth spectral efficiency in the third arrangement can be used as the first target communication beam for the first base station radio frequency link to be communicated. The communication beam used by the second base station radio frequency link to be communicated (i.e., the base station radio frequency link selected from N base station radio frequency links for the second time) is obtained by arranging the fourth communication spectral efficiency of the communication beams corresponding to the Y-1 candidate grid points (excluding the first target grid point) in the high spectral efficiency area of ​​the base station in descending order. The communication beam corresponding to the second target grid point with the highest fourth communication spectral efficiency in the fourth arrangement is used as the second target communication beam for the second base station radio frequency link to be communicated, and so on.

[0100] Since the technical solution for determining the target communication beam of each base station radio frequency link on the base station side is similar to that on the terminal side for determining the target communication beam of each terminal radio frequency link, it is not detailed here. You can refer to the description of the technical solution for determining the target communication beam of each terminal radio frequency link on the terminal side.

[0101] It should be noted that in the embodiments of this application, the spectral efficiency of the reference signal received by the communication beam corresponding to each grid point in the beam grid is arranged in descending order. However, in actual applications, it can also be arranged in ascending order. Thus, the communication beams corresponding to the grid points of the target communication beam can be used as the target communication beams for each radio frequency link in reverse order.

[0102] Furthermore, to more intuitively illustrate the performance advantages of this solution, the algorithm complexity in actual simulation is also provided in the embodiments of this application. Figure 5 This is a comparative diagram showing the complexity of an optional beam search algorithm according to an embodiment of this application, wherein... Figure 5 This demonstrates the number of searches performed by the adjacent space search algorithm used in this application and by existing traversal search algorithms. To avoid the influence of randomness, Figure 5 The search count shown is the average of 1000 independent searches. Each independent search count is calculated from the initial search, incrementing by one for each beam search, until the optimal beam is found. This count is then recorded and saved, and counted as one independent search. By recording the search count for 1000 independent searches using the above method and averaging them, we can obtain... Figure 5The algorithm search complexity is considered in this simulation. Specifically, the simulation considers a large-scale MIMO scenario, assuming the base station has 256 base station antennas and 4 base station RF links, with each RF link connecting 64 base station antennas; the user terminal has 32 terminal antennas and 2 terminal RF links, with each terminal RF link connecting 16 antennas.

[0103] Figure 5 The time complexity of the traversal search algorithm is O(n log n). Where, N RF_BS For 64, M BS 4, N RF_MS For 16, M MS The result was 2, with 4,294,967,296 searches. Due to the large number, scientific notation was used in the simulation results in Matlab, thus not retaining all decimal places. Figure 5 The search count is shown as 4,294,970,000. In contrast, the neighbor space search algorithm only requires 53 searches. Furthermore, due to the significant difference in complexity between the traversal search algorithm and the neighbor space search algorithm, it is therefore less suitable for this purpose. Figure 5 There are almost no histograms showing the complexity of adjacent space search algorithms.

[0104] In the above algorithm complexity calculation, the terminal is considered to be 32 TRs. This terminal includes, but is not limited to, B5G and 6G era mobile phones, and could be any other wireless device. Even considering a scenario where the base station uses 256 TRs, and the terminal only deploys 8 TRs, this algorithm can still reduce the search complexity by 99.9999% (the search complexity of traversal search is mainly determined by the search complexity on the base station side, and has little impact when the number of antennas and RF links deployed on the terminal side is small), demonstrating a significant advantage. Furthermore, Figure 6 This is a comparative diagram of the performance of an optional beam search algorithm according to an embodiment of this application. As can be seen from the diagram, the solution of this application can achieve near-optimal system performance with low beam complexity.

[0105] Example 2

[0106] According to embodiments of this application, a beam search system is also provided. Figure 7 This is a schematic diagram of an optional beam search system according to an embodiment of this application, as shown below. Figure 7 As shown, the beam search system 700 includes at least a terminal 701 and a base station 702, wherein,

[0107] Terminal 701 is used to determine the first communication spectrum efficiency of the communication beam receiving the first reference signal transmitted by the base station corresponding to each first grid point in a preset terminal beam grid. The terminal beam grid includes first grid points arranged in a multi-row, multi-column format. Each first grid point corresponds to a communication beam in a different direction, and the communication beam directions corresponding to each first grid point in each row or column are similar. Based on the first communication spectrum efficiency of the communication beams corresponding to each first grid point, a high-spectral-efficiency region of the terminal is determined in the terminal beam grid. The second communication spectrum efficiency of the communication beams receiving the first reference signal corresponding to each candidate grid point in the high-spectral-efficiency region of the terminal is arranged in descending order. The communication beam of the target grid point corresponding to the Xth second communication spectrum efficiency is determined as the target communication beam corresponding to the Xth terminal radio frequency link to be communicated. The terminal radio frequency link to be communicated is any one of the M terminal radio frequency links, and X is a positive integer less than or equal to M.

[0108] Base station 702 is used to determine the third communication spectral efficiency of the second reference signal transmitted by the communication beam receiving terminal corresponding to each fourth grid point in a preset base station beam grid. The base station beam grid includes fourth grid points arranged in multiple rows and columns, each fourth grid point corresponding to a communication beam in a different direction, and the communication beam directions corresponding to each fourth grid point in each row or column are similar. Based on the third communication spectral efficiency of the communication beams corresponding to each fourth grid point, a high spectral efficiency region of the base station is determined within the base station beam grid. The fourth communication spectral efficiency of the communication beams receiving the second reference signal corresponding to each candidate grid point within the high spectral efficiency region of the base station is arranged in descending order, and the communication beam of the target grid point corresponding to the Yth fourth communication spectral efficiency is determined as the target communication beam corresponding to the Yth base station radio frequency link to be communicated. The base station radio frequency link to be communicated is any one of the Y base station radio frequency links, and Y is a positive integer less than or equal to N.

[0109] As an optional implementation method, Figure 8 This is an interactive flowchart of an optional beam search system according to an embodiment of this application, such as... Figure 8 As shown, base station 702 transmits a reference signal omnidirectionally to terminal 701; terminal 701 uses a neighboring space search algorithm to determine the target communication beam used by the first terminal radio frequency link, while other terminal radio frequency links search in the vicinity of the communication beam used by the first terminal radio frequency link and determine the analog combining matrix W. RF Terminal 701 sequentially transmits reference signals to base station 702 using the optimal analog beam; base station 702 determines the target communication beams used by N base station radio frequency links, and determines the analog precoding matrix F based on the target communication beams. RFAfter completing the communication beam search, terminal 701 and base station 702 can communicate using W... RF / F RF To conduct communication.

[0110] Example 3

[0111] This application also provides a beam search system for implementing a beam search method applied to the terminal side. Figure 9 This is a schematic diagram of an optional beam search device according to an embodiment of this application, as shown below. Figure 9 As shown, the beam search device includes at least a first spectral efficiency determination module 91, a first region determination module 92, and a first beam determination module 93, wherein:

[0112] The first spectrum efficiency determination module 91 is used to determine the first communication spectrum efficiency of the first reference signal sent by the communication beam receiving base station corresponding to each first grid point in the preset terminal beam grid. The terminal beam grid includes first grid points arranged in a multi-row and multi-column manner. Each first grid point corresponds to a communication beam in a different direction, and the communication beam directions corresponding to each first grid point in each row or column are similar.

[0113] The first region determination module 92 is used to determine the high spectrum efficiency region of the terminal within the terminal beam grid based on the first communication spectrum efficiency of the communication beam corresponding to each first grid point.

[0114] The first beam determination module 93 is used to arrange the second communication spectrum efficiency of the communication beams corresponding to each candidate grid point in the high spectrum efficiency region of the terminal in descending order, and determine the communication beam of the target grid point corresponding to the Xth second communication spectrum efficiency as the target communication beam corresponding to the Xth terminal radio frequency link to be communicated, wherein the terminal radio frequency link to be communicated is any one of the M terminal radio frequency links, and X is a positive integer less than or equal to M.

[0115] In addition, embodiments of this application also provide a beam search system for implementing a beam search method applied to base station measurement. Figure 10 This is a schematic diagram of an optional beam search device according to an embodiment of this application, as shown below. Figure 10 As shown, the beam search device includes at least a second spectral efficiency determination module 101, a second region determination module 102, and a second beam determination module 103, wherein:

[0116] The second spectrum efficiency determination module 101 is used to determine the third communication spectrum efficiency of the second reference signal sent by the communication beam receiving terminal corresponding to each fourth grid point in the preset base station beam grid. The base station beam grid includes fourth grid points arranged in a multi-row and multi-column manner. Each fourth grid point corresponds to a communication beam in a different direction, and the communication beam directions corresponding to each fourth grid point in each row or column are similar.

[0117] The second region determination module 102 is used to determine the high spectrum efficiency region of the base station within the base station beam grid based on the third communication spectrum efficiency of the communication beam corresponding to each fourth grid point.

[0118] The second beam determination module 103 is used to arrange the fourth communication spectrum efficiency of the communication beams corresponding to each candidate grid point in the high spectrum efficiency area of ​​the base station receiving the second reference signal in descending order, and determine the communication beam of the target grid point corresponding to the Yth fourth communication spectrum efficiency as the target communication beam corresponding to the Yth base station radio frequency link to be communicated, wherein the base station radio frequency link to be communicated is any one of the Y base station radio frequency links, and Y is a positive integer less than or equal to N.

[0119] It should be noted that each module in the beam search device in this embodiment corresponds one-to-one with each implementation step of the beam search method in Embodiment 1. Since Embodiment 1 has been described in detail, some details not shown in this embodiment can be referred to Embodiment 1, and will not be elaborated further here.

[0120] Example 4

[0121] According to an embodiment of this application, an electronic device is also provided, comprising: a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the beam search method of embodiment 1 through the computer program.

[0122] Optionally, the processor is configured to execute the following steps via a computer program: determining the first communication spectral efficiency of the communication beam receiving the first reference signal transmitted by the base station corresponding to each first grid point within a preset terminal beam grid, wherein the terminal beam grid includes first grid points arranged in a multi-row, multi-column format, each first grid point corresponding to a communication beam in a different direction, and the communication beam directions corresponding to each first grid point in each row or column are similar; determining a high spectral efficiency region for the terminal within the terminal beam grid based on the first communication spectral efficiency of the communication beams corresponding to each first grid point; arranging the second communication spectral efficiency of the communication beams receiving the first reference signal corresponding to each candidate grid point within the high spectral efficiency region of the terminal in descending order, and determining the communication beam of the target grid point corresponding to the Xth second communication spectral efficiency as the target communication beam corresponding to the Xth terminal radio frequency link to be communicated, wherein the terminal radio frequency link to be communicated is any one of the M terminal radio frequency links, and X is a positive integer less than or equal to M.

[0123] Optionally, the processor is configured to execute the following steps via a computer program: determining the third communication spectral efficiency of the second reference signal transmitted by the communication beam receiving terminal corresponding to each fourth grid point within a preset base station beam grid, wherein the base station beam grid includes fourth grid points arranged in a multi-row, multi-column format, each fourth grid point corresponding to a communication beam in a different direction, and the communication beam directions corresponding to each fourth grid point in each row or column are similar; determining a high spectral efficiency region of the base station within the base station beam grid based on the third communication spectral efficiency of the communication beams corresponding to each fourth grid point; arranging the fourth communication spectral efficiency of the communication beams receiving the second reference signal corresponding to each candidate grid point within the high spectral efficiency region of the base station in descending order, and determining the communication beam of the target grid point corresponding to the Yth fourth communication spectral efficiency as the target communication beam corresponding to the Yth base station radio frequency link to be communicated, wherein the base station radio frequency link to be communicated is any one of the Y base station radio frequency links, and Y is a positive integer less than or equal to N.

[0124] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0125] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0126] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between units or modules may be electrical or other forms.

[0127] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0128] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0129] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0130] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A beam search method, characterized in that, This is applied to a terminal that establishes a communication connection with a base station. The terminal deploys M terminal radio frequency links, and each terminal radio frequency link connects to multiple terminal antennas, where M is a positive integer greater than or equal to zero, including: The first communication spectrum efficiency of the communication beam corresponding to each first grid point in the preset terminal beam grid for receiving the first reference signal sent by the base station is determined, wherein the terminal beam grid includes the first grid points arranged in a multi-row and multi-column form, each first grid point corresponds to a communication beam in a different direction, and the communication beam directions corresponding to each first grid point in each row or column are similar. Based on the first communication spectrum efficiency of the communication beam corresponding to each of the first grid points, the high spectrum efficiency region of the terminal is determined within the terminal beam grid. The second communication spectrum efficiency of the communication beams corresponding to each candidate grid point in the high spectral efficiency region of the terminal receiving the first reference signal is arranged in descending order. The communication beam of the target grid point corresponding to the Xth second communication spectrum efficiency is determined as the target communication beam corresponding to the Xth terminal radio frequency link to be communicated. The terminal radio frequency link to be communicated is any one of the M terminal radio frequency links, and X is a positive integer less than or equal to M.

2. The method according to claim 1, characterized in that, Determining the first communication spectral efficiency of the communication beam corresponding to each first grid point within the preset terminal beam grid for receiving the first reference signal transmitted by the base station includes: The first communication spectrum efficiency of the communication beam corresponding to each of the first grid points within the terminal beam grid is determined by receiving the first reference signal sent by the base station.

3. The method according to claim 1, characterized in that, Based on the first communication spectral efficiency of the communication beam corresponding to each of the first grid points, a high spectral efficiency region for the terminal is determined within the terminal beam grid, including: Based on the first communication spectrum efficiency of the communication beam corresponding to each first grid point, determine the second grid point with the highest first communication spectrum efficiency in the terminal beam grid, and the third grid point with the second highest first communication spectrum efficiency adjacent to the second grid point. The high spectral efficiency region of the terminal is determined within the terminal beam grid based on the second grid point and the third grid point.

4. The method according to claim 3, characterized in that, Determining the high spectral efficiency region of the terminal within the terminal beam grid based on the second grid point and the third grid point includes: The high spectral efficiency region of the terminal is determined within the terminal beam grid with the second grid point as the center and the distance between the second grid point and the third grid point as the radius.

5. The method according to claim 1, characterized in that, Arrange the communication beams corresponding to each candidate grid point within the high spectral efficiency region of the terminal in descending order of their second communication spectral efficiency in receiving the first reference signal, and determine the communication beam of the target grid point corresponding to the Xth second communication spectral efficiency as the target communication beam corresponding to the Xth radio frequency link of the terminal to be communicated, including: The second communication spectrum efficiency of the communication beam receiving the first reference signal corresponding to each candidate grid point in the high spectrum efficiency region of the terminal is determined, and the second communication spectrum efficiency is arranged in descending order to obtain a first arrangement order; The communication beam corresponding to the Xth target grid point of the second communication spectrum efficiency in the first arrangement order is taken as the target communication beam corresponding to the Xth radio frequency link of the terminal to be communicated.

6. The method according to claim 5, characterized in that, Taking the communication beam corresponding to the target grid point corresponding to the second communication spectrum efficiency in the first arrangement order as the target communication beam corresponding to the Xth radio frequency link of the terminal to be communicated, including: When X is 1, the communication beam corresponding to the first target grid point with the highest second spectral efficiency in the first arrangement order is taken as the first target communication beam corresponding to the first radio frequency link of the terminal to be communicated. When X is i, determine the second arrangement order of the second communication spectrum efficiency of the X-1 candidate grid points in the high spectrum efficiency area of ​​the terminal, excluding the first target grid point, and take the communication beam corresponding to the second target grid point with the second communication spectrum efficiency in the second arrangement order as the second target communication beam corresponding to the i-th radio frequency link of the terminal to be communicated, where i is greater than or equal to 1 and i is less than or equal to X.

7. The method according to claim 6, characterized in that, Determining a second ranking order of the second communication spectrum efficiency of X-1 candidate grid points (excluding the first target grid point) within the high spectral efficiency region of the terminal includes: The second communication spectral efficiency of the communication beams receiving the first reference signal, excluding the first target grid point, corresponding to the X-1 candidate grid points within the high spectral efficiency region of the terminal, is arranged in descending order to obtain the second arrangement order.

8. A beam search method, characterized in that, This is applied to base stations, where a communication connection is established between the base station and a terminal. The base station deploys N base station radio frequency links, and each base station radio frequency link connects to multiple base station antennas, where N is a positive integer greater than or equal to zero, including: The third communication spectrum efficiency of the communication beam corresponding to each fourth grid point in the preset base station beam grid is determined to receive the second reference signal sent by the terminal. The base station beam grid includes the fourth grid points arranged in a multi-row and multi-column manner. Each fourth grid point corresponds to a communication beam in a different direction, and the communication beam directions corresponding to each fourth grid point in each row or column are similar. Based on the third communication spectrum efficiency of the communication beam corresponding to each of the fourth grid points, the high spectrum efficiency region of the base station is determined within the base station beam grid. The fourth communication spectrum efficiency of the communication beams corresponding to each candidate grid point in the high spectrum efficiency area of ​​the base station receiving the second reference signal is arranged in descending order. The communication beam of the target grid point corresponding to the Yth fourth communication spectrum efficiency is determined as the target communication beam corresponding to the Yth base station radio frequency link to be communicated. The base station radio frequency link to be communicated is any one of the Y base station radio frequency links, and Y is a positive integer less than or equal to N.

9. A beam search system, characterized in that, The beam search system includes base stations and terminals. A communication connection is established between the base stations and the terminals. Each base station deploys N base station radio frequency links, and each base station radio frequency link connects to multiple base station antennas. Each terminal deploys M terminal radio frequency links, and each terminal radio frequency link connects to multiple terminal antennas. M and N are positive integers greater than or equal to zero. The terminal is configured to determine the first communication spectrum efficiency of the communication beam corresponding to each first grid point within a preset terminal beam grid for receiving the first reference signal transmitted by the base station. The terminal beam grid includes first grid points arranged in multiple rows and columns, each first grid point corresponding to a communication beam in a different direction, and the communication beam directions corresponding to each first grid point in each row or column are similar. Based on the first communication spectrum efficiency of the communication beams corresponding to each first grid point, a high-spectrum-efficiency region of the terminal is determined within the terminal beam grid. The second communication spectrum efficiency of the communication beams corresponding to each candidate grid point within the high-spectrum-efficiency region for receiving the first reference signal is arranged in descending order, and the communication beam of the target grid point corresponding to the Xth second communication spectrum efficiency is determined as the target communication beam corresponding to the Xth terminal radio frequency link to be communicated. The terminal radio frequency link to be communicated is any one of the M terminal radio frequency links, and X is a positive integer less than or equal to M. The base station is configured to determine the third communication spectral efficiency of the communication beams corresponding to each fourth grid point within a preset base station beam grid for receiving the second reference signal transmitted by the terminal. The base station beam grid includes the fourth grid points arranged in multiple rows and columns, each fourth grid point corresponding to a communication beam in a different direction, and the communication beam directions corresponding to each fourth grid point in each row or column are similar. Based on the third communication spectral efficiency of the communication beams corresponding to each fourth grid point, a high spectral efficiency region of the base station is determined within the base station beam grid. The fourth communication spectral efficiency of the communication beams corresponding to each candidate grid point within the high spectral efficiency region of the base station for receiving the second reference signal is arranged in descending order. The communication beam of the target grid point corresponding to the Yth fourth communication spectral efficiency is determined as the target communication beam corresponding to the Yth base station radio frequency link to be communicated, where the base station radio frequency link to be communicated is any one of the Y base station radio frequency links, and Y is a positive integer less than or equal to N.

10. An electronic device, characterized in that, include: A memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the beam search method of any one of claims 1 to 7 or the beam search method of claim 8 through the computer program.

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