Beam search method, apparatus, system, electronic device, and readable medium

Abstract

Embodiments of the present application provide a beam search method, device, system, electronic equipment and readable medium. The method comprises selecting a terminal radio frequency link from a plurality of terminal radio frequency links as a selected terminal radio frequency link, selecting a plurality of first point columns in a preset terminal beam grid, and receiving a reference signal transmitted by a base station in an omnidirectional manner using a communication beam corresponding to the first point column; determining the average spectral efficiency of the communication beam corresponding to the first point column; determining a terminal high spectral efficiency region in the terminal beam grid based on the difference in average spectral efficiency between the first point columns; determining a target communication beam corresponding to the selected radio frequency link in the terminal high spectral efficiency region; and selecting a communication beam with a direction close to that of the target communication beam as a target communication beam corresponding to other terminal radio frequency links in the plurality of terminal radio frequency links except the selected terminal radio frequency link. The embodiments of the present application effectively reduce the beam search complexity and shorten the time for determining the preferred communication beam.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to a beam search method, a beam search device, a beam search system, an electronic device, and a computer-readable medium. Background Technology

[0002] Due to the high loss in the millimeter-wave band, post-5G (Beyond 5G, B5G) or 6G communication systems will need to rely on beamforming gain obtained from deploying very large-scale antenna arrays (VMAs) to combat path loss. After deploying VMAs, base stations and terminals will use narrow beams for communication, and the more antennas there are, the narrower the beamwidth. This means that during communication, the base station and terminal need to find the optimal or near-optimal beam pair to achieve high spectral efficiency (intuitively, higher uplink and downlink speeds). More communication beams and narrower beamwidths mean that the base station needs to spend more time and frequency domain resources searching for beams with the user. Existing solutions cannot meet the low latency requirements of real-world systems in VMA scenarios. Summary of the Invention

[0003] The present invention provides a beam search method, apparatus, electronic device, and computer-readable storage medium to solve the problem of reducing latency in ultra-large-scale multiple-input multiple-output system scenarios.

[0004] This invention discloses a beam search method applied to a terminal, which is communicatively connected to a base station. The terminal is equipped with several terminal radio frequency links, and each terminal radio frequency link is connected to several terminal antennas. The method includes:

[0005] One terminal radio frequency link is selected from several terminal radio frequency links as the candidate terminal radio frequency link. Several first point columns are selected in a preset terminal beam grid. The communication beam corresponding to the first point column is used to receive the reference signal transmitted omnidirectionally by the base station. The terminal beam grid includes several points arranged in a row and column form. Each point corresponds to a communication beam in one direction. Points with similar positions in the terminal beam grid correspond to communication beams with similar directions. The first point column includes several points arranged in a row, column, or diagonal form.

[0006] Determine the average spectral efficiency of the communication beam corresponding to the first point column;

[0007] Based on the difference in average spectral efficiency between the first point columns, a high spectral efficiency region for the terminal is determined in the terminal beam grid.

[0008] Determine the target communication beam corresponding to the candidate radio frequency link in the high spectral efficiency region of the terminal;

[0009] A communication beam whose direction is similar to the target communication beam is selected as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency link among the plurality of terminal radio frequency links.

[0010] Optionally, the step of determining the average spectral efficiency of the communication beam corresponding to the first point column includes:

[0011] Determine the communication spectrum efficiency of the communication beam corresponding to each point in the first point column;

[0012] The average spectral efficiency of the communication beam corresponding to each point in the first point column is taken as the average spectral efficiency of the communication beam corresponding to the first point column.

[0013] Optionally, the step of determining the high spectral efficiency region of the terminal in the terminal beam grid based on the difference in average spectral efficiency between the first point columns includes:

[0014] Determine the difference in average spectral efficiency between adjacent first point columns;

[0015] The region formed by the adjacent first points with high differences in the beam network is designated as the high spectral efficiency region of the terminal.

[0016] Optionally, the step of determining the target communication beam corresponding to the candidate radio frequency link in the high spectral efficiency region of the terminal includes:

[0017] The adjacent first point column with the high difference and the second point column located between the adjacent first point columns with the high difference are selected as candidate point columns.

[0018] The communication spectrum efficiency of the communication beams corresponding to the candidate point columns is determined by receiving the reference signals transmitted omnidirectionally by the base station using the communication beams corresponding to the candidate point columns.

[0019] The communication beam with a higher communication spectrum efficiency than the corresponding communication spectrum efficiency of other communication beams is selected as the target communication beam for the candidate radio frequency link.

[0020] Optionally, the step of selecting a communication beam with a direction similar to the target communication beam as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency links among the plurality of terminal radio frequency links includes:

[0021] In the terminal beam grid, a point adjacent to the point corresponding to the target communication beam is determined as a first candidate point;

[0022] The communication spectrum efficiency of the communication beam corresponding to the first candidate point is determined by receiving the reference signal transmitted omnidirectionally by the base station using the communication beam corresponding to the first candidate point.

[0023] Based on the communication spectrum efficiency of the communication beam corresponding to the first candidate point, several communication beams corresponding to the first candidate points are selected as target communication beams for other terminal radio frequency links besides the candidate terminal radio frequency links among the several terminal radio frequency links.

[0024] This invention also discloses a beam search method applied to a base station, wherein the base station is communicatively connected to a terminal, the base station is deployed with a plurality of base station radio frequency links, and each base station radio frequency link is connected to a plurality of base station antennas, the method comprising:

[0025] One base station radio frequency link is selected from several base station radio frequency links as the candidate base station radio frequency link. Several third point columns are selected in a preset base station beam grid, and the reference signal sent by the terminal is received by the communication beam corresponding to the third point column. The base station beam grid includes several points arranged in a row and column form, each point corresponds to a communication beam in a direction, and the communication beam directions corresponding to points that are close in position in the base station beam grid are similar. The third point column includes several points arranged in a row, column, or diagonal form.

[0026] Determine the average spectral efficiency of the communication beam corresponding to the third point column;

[0027] Based on the difference in average spectral efficiency between the third point columns, a high spectral efficiency region for the base station is determined in the base station beam grid.

[0028] Determine the target communication beam corresponding to the candidate radio frequency link in the high spectral efficiency region of the base station;

[0029] A communication beam whose direction is similar to the target communication beam is selected as the target communication beam for other base station radio frequency links besides the candidate base station radio frequency link among the plurality of base station radio frequency links.

[0030] Optionally, the step of determining the average spectral efficiency of the communication beam corresponding to the third point column includes:

[0031] The communication spectrum efficiency of the communication beam corresponding to each point in the third point column is determined respectively;

[0032] The average spectral efficiency of the communication beam corresponding to each point in the third point column is taken as the average spectral efficiency of the communication beam corresponding to the third point column.

[0033] Optionally, the step of determining the high spectral efficiency region of the base station in the base station beam grid based on the difference in average spectral efficiency between the third point columns includes:

[0034] Determine the difference in average spectral efficiency between adjacent third point columns;

[0035] The region formed by listing the adjacent third points with high differences in the beam network is designated as the high spectral efficiency region of the base station.

[0036] Optionally, the step of determining the target communication beam corresponding to the candidate radio frequency link in the high spectral efficiency region of the base station includes:

[0037] The adjacent third point column with the highest difference, and the fourth point column located between the adjacent third point columns with the highest difference, are selected as candidate point columns.

[0038] The communication spectrum efficiency of the communication beams corresponding to the candidate point columns is determined by receiving the reference signals transmitted omnidirectionally by the base station using the communication beams corresponding to the candidate point columns.

[0039] The communication beam with a higher communication spectrum efficiency than the corresponding communication spectrum efficiency of other communication beams is selected as the target communication beam for the candidate radio frequency link.

[0040] Optionally, the step of selecting a communication beam with a direction similar to the target communication beam as the target communication beam for other base station radio frequency links besides the candidate base station radio frequency links among the plurality of base station radio frequency links includes:

[0041] In the base station beam grid, a point adjacent to the point corresponding to the target communication beam is determined as a second candidate point;

[0042] The communication spectrum efficiency of the communication beam corresponding to the second candidate point is determined by receiving the reference signal transmitted omnidirectionally by the base station using the communication beam corresponding to the second candidate point.

[0043] Based on the communication spectrum efficiency of the communication beam corresponding to the second candidate point, several communication beams corresponding to the second candidate points are selected as target communication beams for other base station radio frequency links besides the candidate base station radio frequency links among the several base station radio frequency links.

[0044] This invention also discloses a beam search system, which includes a terminal and a base station; the base station is communicatively connected to the terminal; the base station is deployed with a plurality of base station radio frequency links, each of which is connected to a plurality of base station antennas; the terminal is deployed with a plurality of terminal radio frequency links, each of which is connected to a plurality of terminal antennas.

[0045] The terminal is used to select one terminal radio frequency link as a candidate terminal radio frequency link from a plurality of terminal radio frequency links. This is achieved by selecting a plurality of first point columns in a preset terminal beam grid, and using the communication beam corresponding to the first point column to receive the reference signal transmitted omnidirectionally by the base station. The terminal beam grid includes a plurality of points arranged in rows and columns, each point corresponding to a communication beam in a direction. Points in close proximity in the terminal beam grid correspond to communication beams with similar directions. The first point column contains a plurality of points arranged in one of the following forms: rows, columns, or diagonal lines. The average spectral efficiency of the communication beams corresponding to the first point column is determined. Based on the difference in average spectral efficiency between the first point columns, a high spectral efficiency region is determined in the terminal beam grid. A target communication beam corresponding to the candidate radio frequency link is determined in the high spectral efficiency region. A communication beam with a direction similar to the target communication beam is selected as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency link among the plurality of terminal radio frequency links.

[0046] The base station is used to select one base station radio frequency link from several base station radio frequency links as a candidate base station radio frequency link. This is achieved by selecting several third point columns in a preset base station beam grid, and using the communication beam corresponding to the third point column to receive the reference signal transmitted by the terminal using a target communication beam. The base station beam grid includes several points arranged in rows and columns, each point corresponding to a communication beam in a direction. Points in close proximity in the base station beam grid correspond to communication beams with similar directions. The third point column contains several points arranged in one of the following forms: rows, columns, or diagonal lines. The average spectral efficiency of the communication beam corresponding to the third point column is determined. Based on the difference in average spectral efficiency between the third point columns, a high spectral efficiency region for the base station is determined in the base station beam grid. The target communication beam corresponding to the candidate radio frequency link is determined in the high spectral efficiency region. A communication beam with a direction similar to the target communication beam is selected as the target communication beam for other base station radio frequency links besides the candidate base station radio frequency link among the several base station radio frequency links.

[0047] This invention also discloses a beam search device applied to a terminal, the terminal being communicatively connected to a base station, the terminal having deployed a plurality of terminal radio frequency links, each terminal radio frequency link being connected to a plurality of terminal antennas, the device comprising:

[0048] The first signal receiving module is used to select one terminal radio frequency link from several terminal radio frequency links as the candidate terminal radio frequency link, and to select several first point columns in a preset terminal beam grid, and to receive the reference signal transmitted omnidirectionally by the base station using the communication beam corresponding to the first point column; wherein, the terminal beam grid includes several points arranged in a row and column form, each point corresponding to a communication beam in a direction, and the communication beam directions corresponding to points that are close in position in the terminal beam grid are similar; the first point column includes several points arranged in a row, column, or diagonal form;

[0049] The first spectral efficiency determination module is used to determine the average spectral efficiency of the communication beam corresponding to the first point column.

[0050] The first region determination module is used to determine the high spectral efficiency region of the terminal in the terminal beam grid based on the difference in average spectral efficiency between the first point columns.

[0051] The first beam determination module is used to determine the target communication beam corresponding to the candidate radio frequency link in the high spectral efficiency region of the terminal.

[0052] The second beam determination module is used to select a communication beam that is close to the direction of the target communication beam as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency links among the plurality of terminal radio frequency links.

[0053] Optionally, the first spectral efficiency determination module step includes:

[0054] The first spectral efficiency determination submodule is used to determine the communication spectral efficiency of the communication beam corresponding to each point in the first point column.

[0055] The first average spectral efficiency determination submodule is used to take the average value of the communication spectral efficiency of the communication beam corresponding to each point in the first point column as the average spectral efficiency of the communication beam corresponding to the first point column.

[0056] Optionally, the first region determination module includes:

[0057] The first difference determination submodule is used to determine the difference in average spectral efficiency between adjacent first point columns;

[0058] The first region determination submodule is used to identify the region formed by the adjacent first points with high differences in the beam network as the terminal high spectral efficiency region.

[0059] Optionally, the first beam determination module includes:

[0060] The first candidate point column determination submodule is used to select the adjacent first point columns with high differences and the second point columns located between the adjacent first point columns with high differences as candidate point columns;

[0061] The first candidate spectrum efficiency determination submodule is used to receive the reference signal transmitted omnidirectionally by the base station using the communication beams corresponding to the candidate point columns, and to determine the communication spectrum efficiency of the communication beams corresponding to the candidate point columns.

[0062] The first target communication beam determination submodule is used to select the communication beam with a higher communication spectrum efficiency than the corresponding communication spectrum efficiency of other communication beams as the target communication beam corresponding to the candidate radio frequency link.

[0063] Optionally, the second beam determination module includes:

[0064] The second candidate point determination module is used to determine, in the terminal beam grid, a point adjacent to the point corresponding to the target communication beam, as the first candidate point;

[0065] The second candidate spectrum efficiency determination submodule is used to receive the reference signal transmitted omnidirectionally by the base station using the communication beam corresponding to the first candidate point, and determine the communication spectrum efficiency of the communication beam corresponding to the first candidate point.

[0066] The second target communication beam determination submodule is used to select several communication beams corresponding to the first candidate points based on the communication spectrum efficiency of the communication beams corresponding to the first candidate points, as the target communication beams corresponding to other terminal radio frequency links besides the candidate terminal radio frequency links among the several terminal radio frequency links.

[0067] This invention also discloses a beam search device applied to a base station, wherein the base station is communicatively connected to a terminal, the base station is deployed with a plurality of base station radio frequency links, and each base station radio frequency link is connected to a plurality of base station antennas, and the device includes:

[0068] The second signal receiving module is used to select one base station radio frequency link from several base station radio frequency links as the candidate base station radio frequency link, and to select several third point columns in a preset base station beam grid, and to receive the reference signal sent by the terminal using the communication beam corresponding to the third point column; wherein, the base station beam grid includes several points arranged in a row and column form, each point corresponds to a communication beam in a direction, and the communication beam directions corresponding to points that are close in position in the base station beam grid are similar; the third point column includes several points arranged in a row, column, or diagonal form;

[0069] The second spectral efficiency determination module is used to determine the average spectral efficiency of the communication beam corresponding to the third dot column.

[0070] The second region determination module is used to determine the high spectral efficiency region of the base station in the base station beam grid based on the difference in average spectral efficiency between the third point columns.

[0071] The third beam determination module is used to determine the target communication beam corresponding to the candidate radio frequency link in the high spectrum efficiency region of the base station.

[0072] The fourth beam determination module is used to select a communication beam with a direction similar to the target communication beam as the target communication beam for other base station radio frequency links besides the candidate base station radio frequency links among the plurality of base station radio frequency links.

[0073] Optionally, the second spectral efficiency determination module includes:

[0074] The second spectral efficiency determination submodule is used to determine the communication spectral efficiency of the communication beam corresponding to each point in the third point column.

[0075] The second average spectral efficiency determination submodule is used to take the average value of the communication spectral efficiency of the communication beam corresponding to each point in the third point column as the average spectral efficiency of the communication beam corresponding to the third point column.

[0076] Optionally, the second region determination module includes:

[0077] The second difference determination submodule is used to determine the difference in average spectral efficiency between adjacent third point columns;

[0078] The second region determination submodule is used to identify the region formed by the adjacent third points with high differences in the beam network as the high spectral efficiency region of the base station.

[0079] Optionally, the third beam determination module includes:

[0080] The third candidate point column determination submodule is used to select the adjacent third point column with the high difference and the fourth point column located between the adjacent third point column with the high difference as candidate point columns;

[0081] The third candidate spectrum efficiency determination submodule is used to receive the reference signal transmitted omnidirectionally by the base station using the communication beams corresponding to the candidate point columns, and to determine the communication spectrum efficiency of the communication beams corresponding to the candidate point columns.

[0082] The third target communication beam determination submodule is used to select the communication beam with a higher communication spectrum efficiency than the corresponding communication spectrum efficiency of other communication beams as the target communication beam corresponding to the candidate radio frequency link.

[0083] Optionally, the fourth beam determination module includes:

[0084] The fourth second candidate point determination module is used to determine, in the base station beam grid, a point adjacent to the point corresponding to the target communication beam, as a second candidate point;

[0085] The fourth candidate spectrum efficiency determination submodule is used to receive the reference signal transmitted omnidirectionally by the base station using the communication beam corresponding to the second candidate point, and determine the communication spectrum efficiency of the communication beam corresponding to the second candidate point.

[0086] The fourth target communication beam determination submodule is used to select several communication beams corresponding to the second candidate points based on the communication spectrum efficiency of the communication beams corresponding to the second candidate points, as the target communication beams corresponding to other base station radio frequency links besides the candidate base station radio frequency links among the several base station radio frequency links.

[0087] This invention also discloses an electronic device, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

[0088] The memory is used to store computer programs;

[0089] When the processor executes a program stored in the memory, it implements the method described in the embodiments of the present invention.

[0090] This invention also discloses one or more computer-readable media storing instructions that, when executed by one or more processors, cause the processors to perform the methods described in this invention.

[0091] The embodiments of the present invention have the following advantages:

[0092] This invention selects a terminal radio frequency link from several terminal radio frequency links as a candidate terminal radio frequency link. It employs a method of selecting several first point columns in a preset terminal beam grid, and using the communication beams corresponding to the first point columns to receive the reference signal transmitted omnidirectionally by the base station. The average spectral efficiency of the communication beams corresponding to the first point columns is determined. Based on the difference in average spectral efficiency between the first point columns, a high spectral efficiency region for the terminal is determined in the terminal beam grid. A target communication beam corresponding to the candidate radio frequency link is determined within the high spectral efficiency region. A communication beam with a direction close to the target communication beam is selected as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency link. This invention effectively reduces beam search complexity and shortens the time for determining the preferred communication beam, while also approaching optimal system performance. The user experience is consistently high transmission rates, resulting in a higher perceived efficiency. Furthermore, the more base station antennas there are, the more effectively this invention demonstrates its advantage in reducing beam search complexity, making it applicable to existing 32TR and 64TR base stations, as well as the future planned 256TR base stations. Attached Figure Description

[0093] Figure 1 This is a schematic diagram of a transceiver structure provided in an embodiment of the present invention;

[0094] Figure 2 This is a flowchart of the steps of a beam search method provided in an embodiment of the present invention;

[0095] Figure 3 This is a schematic diagram of a beam grid provided in an embodiment of the present invention;

[0096] Figure 4 This is a flowchart of another beam search method provided in an embodiment of the present invention;

[0097] Figure 5 This is a schematic diagram of another beam grid provided in an embodiment of the present invention;

[0098] Figure 6 This is a flowchart of another beam search method provided in an embodiment of the present invention;

[0099] Figure 7 This is a schematic diagram illustrating the search complexity of an algorithm provided in an embodiment of the present invention;

[0100] Figure 8 This is a schematic diagram of a performance curve provided in an embodiment of the present invention;

[0101] Figure 9 This is a schematic diagram of the structure of a beam search system provided in an embodiment of the present invention;

[0102] Figure 10 This is a structural block diagram of a beam search device provided in an embodiment of the present invention;

[0103] Figure 11 This is a structural block diagram of another beam search device provided in an embodiment of the present invention;

[0104] Figure 12 This is a block diagram of an electronic device provided in an embodiment of the present invention;

[0105] Figure 13 This is a schematic diagram of a computer-readable medium provided in an embodiment of the present invention. Detailed Implementation

[0106] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0107] Figure 1 This is a schematic diagram of a transceiver structure provided in an embodiment of the present invention. Figure 1 As shown, this embodiment of the invention can be applied to a downlink single-cell system employing a partially connected analog-digital hybrid processing architecture between the transmitter and receiver. In this partially connected architecture, each radio frequency (RF) link is not connected to only one antenna, but rather one RF link can connect to multiple antennas. The transmitting base station mainly consists of a digital precoding section at the back end of the RF link and an analog precoding section at the front end of the RF 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 RF link. N antennas are deployed on the base station side. BS The antenna is connected to M in a partially connected manner. BS Each radio frequency link serves a single terminal, and each radio frequency link connects N. RF_BS 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. RF_MS One antenna, supporting the transmission of N during communication. s Data streams (N) s ≥1).

[0108] At the transmitting end (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 RFAfter performing analog precoding, it can be obtained from N BS The antenna transmits in beam form. Therefore, the complex signal transmitted at the transmitting end (base station side) can be obtained from equation (1-1):

[0109] x = F RF F BB s (1-1)

[0110] Among them, the transmitted signal s must satisfy ρ represents the average transmission power.

[0111] At the receiving end (terminal side), N MS The signal received by the antenna first passes through a dimension of N MS ×M MS RF (analog) combiner W RF Perform 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:

[0112]

[0113] Where H is a dimension of N MS ×N BS The channel matrix, where 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.

[0114] In a partially connected structure, F RF It is a matrix with a special diagonal matrix structure, specifically expressed as in This represents 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 and ‖·‖ F It is the Frobenius norm.

[0115] Similarly, in W represents the non-zero merged weighted vector of the i-th subarray of the user. RF Each element in must satisfy

[0116] 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 Composition. The design of hybrid beamformers typically follows 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 Simulated 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, each traversing a predetermined set of beamforming codebooks, and 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. The beamforming codebook set used in this invention 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):

[0117]

[0118] 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 invention studies how to determine the analog beamforming matrix.

[0119] Reference Figure 2 The diagram illustrates a flowchart of a beam search method provided in an embodiment of the present invention, which may specifically include the following steps:

[0120] Step 201: Select one terminal radio frequency link from several terminal radio frequency links as the candidate terminal radio frequency link, and select several first point columns in a preset terminal beam grid, and use the communication beam corresponding to the first point column to receive the reference signal transmitted omnidirectionally by the base station; wherein, the terminal beam grid includes several points arranged in a row and column form, each point corresponds to a communication beam in a direction, and the communication beam directions corresponding to points that are close in position in the terminal beam grid are similar; the first point column includes several points arranged in a row, column, or diagonal form;

[0121] When it is necessary to determine the beam pair used between a base station and a terminal, the base station can send an omnidirectional reference signal to the terminal. The terminal can use multiple available communication beams to receive the reference signal to determine the communication beam with higher communication spectral efficiency. The terminal can be configured with multiple radio frequency links, and the communication beam used for each radio frequency link can be determined sequentially. Thus, one terminal radio frequency link can be selected as a candidate terminal radio frequency link from among several terminal radio frequency links.

[0122] To improve the search efficiency for communication beams with high spectral efficiency and reduce latency, a terminal beam grid can be set up based on a preset codebook.

[0123] Specifically, the preset codebook can contain several communication beams available to the terminal. A terminal beam grid can be constructed based on the preset codebook, which can include several points arranged in rows and columns. Each point corresponds to a communication beam in a certain direction, and points in close proximity in the terminal beam grid correspond to communication beams with similar directions. Several first point columns can be selected in the terminal beam grid. These first point columns can contain points arranged in rows, columns, or diagonal lines. Subsequently, the communication beams corresponding to the points in the selected first point columns can be used to receive reference signals.

[0124] As a specific example of the present invention Figure 3 This is a schematic diagram of a beam grid according to an embodiment of the present invention. The first point column can be arranged in the form of diagonal lines. The first point column can be selected in the beam grid at intervals of one diagonal line, thereby obtaining the first point column S1, S2, S3, S4, S5, and S6. By selecting the first point column at intervals, the number of communication beams that need to be calculated for communication spectrum efficiency can be effectively reduced during the initial calculation of communication spectrum efficiency. In specific implementations, the selection method of the first point column can be determined according to actual needs, for example, selecting at intervals of one row, column, and diagonal lines, or at intervals of two rows, columns, and diagonal lines, etc., and the present invention does not limit this.

[0125] Furthermore, 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.

[0126] Step 202: Determine the average spectral efficiency of the communication beam corresponding to the first point column;

[0127] Subsequently, in order to quickly locate the position of the communication beam corresponding to the better communication spectrum efficiency in the beam grid, the average spectrum efficiency of the communication beam corresponding to the first point column can be determined, thereby determining whether the first point column is located in the region near the better communication spectrum efficiency.

[0128] Step 203: Based on the difference in average spectral efficiency between the first point columns, determine the high spectral efficiency region of the terminal in the terminal beam grid.

[0129] Generally, the larger the difference in average spectral efficiency between adjacent first point columns, the higher the spectral efficiency of the region between the first point columns can be considered. Therefore, a high spectral efficiency region for the terminal can be determined within the terminal beam grid based on the difference in average spectral efficiency between the first point columns.

[0130] Step 204: Determine the target communication beam corresponding to the candidate radio frequency link in the high spectral efficiency region of the terminal;

[0131] After determining the high spectral efficiency region of the terminal, three scenarios are possible. The first is that at least one of the first point columns between the two first point columns is located in the high spectral efficiency region. The second is that the communication beam corresponding to a point in the intermediate region between the two first point columns is located in the high spectral efficiency region. The third is that both first point columns and the intermediate region between the two first point columns are located in the high spectral efficiency region.

[0132] Therefore, the communication spectrum efficiency of the communication beams corresponding to different points in the high spectrum efficiency region of the terminal can be determined again, and the communication beams corresponding to the points with higher communication spectrum efficiency in this range can be used as the target communication beams corresponding to the candidate RF links.

[0133] Step 205: Select a communication beam that is close to the direction of the target communication beam as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency links among the plurality of terminal radio frequency links.

[0134] After identifying the target communication beam for the candidate RF links, when multiple RF links use communication beams in similar directions, the terminal's communication performance in that direction can be effectively enhanced. Therefore, once the target communication beam for one terminal RF link is determined, communication beams with similar directions can be found as target communication beams for other terminal RF links, effectively reducing beam search complexity. After determining the communication beam for each RF link, the terminal's analog combining matrix W can be determined. RF The vector corresponding to the element wi in the middle can be used to determine the simulation merging matrix W of the terminal. RF .

[0135] This invention selects a terminal radio frequency link from several terminal radio frequency links as a candidate terminal radio frequency link. It employs a method of selecting several first point columns in a preset terminal beam grid, and using the communication beams corresponding to the first point columns to receive the reference signal transmitted omnidirectionally by the base station. The average spectral efficiency of the communication beams corresponding to the first point columns is determined. Based on the difference in average spectral efficiency between the first point columns, a high spectral efficiency region for the terminal is determined in the terminal beam grid. A target communication beam corresponding to the candidate radio frequency link is determined within the high spectral efficiency region. A communication beam with a direction close to the target communication beam is selected as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency link. This invention effectively reduces beam search complexity and shortens the time for determining the preferred communication beam, while also approaching optimal system performance. The user experience is consistently high transmission rates, resulting in a higher perceived efficiency. Furthermore, the more base station antennas there are, the more effectively this invention demonstrates its advantage in reducing beam search complexity, making it applicable to existing 32TR and 64TR base stations, as well as the future planned 256TR base stations.

[0136] Reference Figure 4 The diagram illustrates a flowchart of a beam search method provided in an embodiment of the present invention, which may specifically include the following steps:

[0137] Step 401: Select one terminal radio frequency link from several terminal radio frequency links as the candidate terminal radio frequency link, and select several first point columns in a preset terminal beam grid, and use the communication beam corresponding to the first point column to receive the reference signal transmitted omnidirectionally by the base station; wherein, the terminal beam grid includes several points arranged in a row and column form, each point corresponds to a communication beam in a direction, and the communication beam directions corresponding to points that are close in position in the terminal beam grid are similar; the first point column includes several points arranged in a row, column, or diagonal form;

[0138] When it is necessary to determine the beam pair used between a base station and a terminal, the base station can send an omnidirectional reference signal to the terminal. The terminal can use multiple available communication beams to receive the reference signal to determine the communication beam with higher communication spectral efficiency. To improve the search efficiency for communication beams with higher communication spectral efficiency and reduce latency, a terminal beam grid can be set up based on a preset codebook. The preset codebook can record several communication beams available to the terminal. The terminal beam grid can be constructed based on the terminal's preset codebook, which can include several points arranged in rows and columns. Each point corresponds to a communication beam in a certain direction, and the communication beams corresponding to points that are close in position in the terminal beam grid are in similar directions. Several first columns of points can be selected in the terminal beam grid. These first columns of points can contain points arranged in rows, columns, or diagonal lines. Subsequently, the reference signal can be received using the communication beam corresponding to the points in the selected first columns of points.

[0139] Step 402: Determine the communication spectrum efficiency of the communication beam corresponding to each point in the first point column;

[0140] To facilitate quickly locating the position of the communication beam corresponding to optimal communication spectral efficiency within the beam grid, the spectral efficiency of the communication beams corresponding to the first point column can be determined. This allows us to ascertain whether the first point column as a whole is located in the vicinity of optimal communication spectral efficiency. Therefore, the communication spectral efficiency of the communication beam corresponding to each point in the first point column can be determined first.

[0141] In practical implementation, the communication spectral efficiency of the communication beam corresponding to each point can be calculated using equation (1-4):

[0142]

[0143] Where ρ is the received signal power, σ 2 This represents noise power.

[0144] Step 403: Take the average value of the communication spectrum efficiency of the communication beam corresponding to each point in the first point column as the average spectrum efficiency of the communication beam corresponding to the first point column.

[0145] After determining the communication spectral efficiency of the communication beam corresponding to each point in the first point column, the average value of the communication spectral efficiency of the communication beam corresponding to each point in the first point column can be calculated as the average spectral efficiency of the communication beam corresponding to the first point column.

[0146] Step 404: Based on the difference in average spectral efficiency between the first point columns, determine the high spectral efficiency region of the terminal in the terminal beam grid.

[0147] In one embodiment of the present invention, the step of determining a high spectral efficiency region of the terminal in the terminal beam grid based on the difference in average spectral efficiency between the first point columns includes:

[0148] S11, determine the difference in average spectral efficiency between adjacent first point columns;

[0149] S12, the region formed by the adjacent first points with high difference in the beam network is taken as the high spectral efficiency region of the terminal.

[0150] Generally, the larger the difference in average spectral efficiency between adjacent first point columns, the higher the spectral efficiency of the region between them. Therefore, we can first calculate the difference in average spectral efficiency between adjacent first point columns. If the difference is large, it indicates the presence of points corresponding to communication beams with high spectral efficiency around the adjacent first point columns. Thus, the region formed by adjacent first point columns with high differences within the beam network can be considered a high spectral efficiency region for the terminal.

[0151] As a specific example of the present invention, the average spectral efficiency of each of the first point sequences S1, S2, S3, S4, S5, and S6 can first be calculated. Then, the differences in average spectral efficiency between adjacent first point sequences can be calculated, specifically the differences in average spectral efficiency between S1 and S2, S2 and S3, S3 and S4, S4 and S5, and S5 and S6. If the difference in average spectral efficiency between the first point sequences S5 and S6 is the largest, then the region formed by the first point sequences S5 and S6 can be considered a high spectral efficiency region for the terminal. This high spectral efficiency region may include point sequences S5, S6, and S7.

[0152] Step 405: Determine the target communication beam corresponding to the candidate radio frequency link in the high spectral efficiency region of the terminal;

[0153] After determining the high spectral efficiency region of the terminal, three scenarios are possible. The first is that at least one of the two first point columns is located within the high spectral efficiency region. The second is that the communication beam corresponding to a point in the intermediate region between the two first point columns is located within the high spectral efficiency region. The third is that both first point columns and the intermediate region between them are located within the high spectral efficiency region. Therefore, the communication spectral efficiency of the communication beams corresponding to different points within the high spectral efficiency region of the terminal can be determined again, and the communication beams corresponding to points with high communication spectral efficiency within this range can be used as the target communication beams for the candidate RF links.

[0154] In one embodiment of the present invention, the step of determining the target communication beam corresponding to the candidate radio frequency link in the high spectral efficiency region of the terminal includes:

[0155] S21, the adjacent first point column with the high difference and the second point column located between the adjacent first point columns with the high difference are selected as candidate point columns;

[0156] S22, the reference signals transmitted omnidirectionally by the base station are received by the communication beams corresponding to the candidate point columns respectively, and the communication spectrum efficiency of the communication beams corresponding to the candidate point columns is determined.

[0157] S23, the communication beam with higher communication spectrum efficiency than the corresponding communication spectrum efficiency of other communication beams is selected as the target communication beam for the candidate radio frequency link.

[0158] Specifically, since other point sequences that were not selected during the selection process of the first point sequence can exist, there can be other point sequences between adjacent first point sequences with high differences. These point sequences between adjacent first point sequences with high differences can be used as the second point sequence. For example... Figure 3 A second point column S7 can exist between the first point columns S5 and S6. Since the point with the highest communication spectrum efficiency can also exist in the second point column, the adjacent first point columns with high differences and the second point columns located between the adjacent first point columns with high differences can be used as candidate point columns.

[0159] Subsequently, the reference signal transmitted omnidirectionally by the base station can be received using the communication beams corresponding to the points in the first and second point columns, respectively. Since the communication spectral efficiency of points in the high spectral efficiency region of the terminal may already be determined, it is not necessary to determine the communication spectral efficiency of all communication beams corresponding to points in the high spectral efficiency region of the terminal. Therefore, only the communication beams in the high spectral efficiency region of the terminal whose communication spectral efficiency has not been calculated, such as the communication beams corresponding to the points in the second point column, can be analyzed.

[0160] After determining the communication spectrum efficiency of all points in the high spectrum efficiency region of the terminal, the communication beam with a higher communication spectrum efficiency than the communication spectrum efficiency of other communication beams, such as the communication beam with the highest communication spectrum efficiency, can be used as the target communication beam for the candidate communication link.

[0161] Step 406: Select a communication beam that is close to the direction of the target communication beam as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency links among the plurality of terminal radio frequency links.

[0162] After identifying the target communication beam corresponding to the candidate RF link, when multiple RF links use communication beams in similar directions for communication, the communication performance of the terminal in that direction can be effectively enhanced. Thus, after determining the target communication beam corresponding to a terminal RF link, communication beams in similar directions to the target communication beam can be found as target communication beams for other terminal RF links, thereby effectively reducing the complexity of beam search.

[0163] The step of selecting a communication beam with a direction similar to the target communication beam as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency links among the plurality of terminal radio frequency links includes:

[0164] S31, in the terminal beam grid, determine the point adjacent to the point corresponding to the target communication beam as the first candidate point;

[0165] S32, respectively using the communication beam corresponding to the first candidate point to receive the reference signal transmitted omnidirectionally by the base station, and determine the communication spectrum efficiency of the communication beam corresponding to the first candidate point;

[0166] S33, based on the communication spectrum efficiency of the communication beam corresponding to the first candidate point, select several communication beams corresponding to the first candidate points as target communication beams for other terminal radio frequency links besides the candidate terminal radio frequency links among the several terminal radio frequency links.

[0167] Specifically, since points in the terminal beam grid that are close in location correspond to communication beam directions that are similar, in order to enable the terminal to obtain better communication performance, communication beams with directions similar to the target communication beams corresponding to the candidate terminal RF links can be used as the target communication beams for the remaining terminal RF links. Therefore, points adjacent to the points corresponding to the target communication beams in the terminal beam grid can be determined as first candidate points.

[0168] Subsequently, the reference signal transmitted omnidirectionally by the base station can be received using the communication beam corresponding to the first candidate point to determine the communication spectral efficiency of the communication beam corresponding to the first candidate point. Since the communication spectral efficiency of the communication beams corresponding to points in the first and second point columns has already been determined during the process of determining the communication beams corresponding to the candidate terminal's radio frequency link, it is not necessary to determine the communication spectral efficiency of all communication beams corresponding to the first candidate points. Therefore, only the communication beams among the first candidate points whose communication spectral efficiency has not been calculated can be analyzed.

[0169] After determining the communication spectrum efficiency of the communication beam corresponding to the first candidate point, the communication beam corresponding to the first candidate point with high communication spectrum efficiency can be selected as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency links in the plurality of terminal radio frequency links.

[0170] Figure 5 This is a schematic diagram of another beam grid according to an embodiment of the present invention. After the first radio frequency link determines the optimal communication beam, subsequent links search around that optimal beam. Figure 5 As shown, assuming the optimal communication beam determined by the first RF link is D1, then the second RF link in Figure 5 A search is performed around the corresponding beam position of the center point, namely D2, D3, D4, D5, D6, D7, D8, and D9, and the beam with the highest spectral efficiency is selected for subsequent communication.

[0171] This invention selects a terminal radio frequency link from several terminal radio frequency links as a candidate terminal radio frequency link. It employs a method of selecting several first point columns in a preset terminal beam grid, and using the communication beams corresponding to the first point columns to receive the reference signal transmitted omnidirectionally by the base station. The average spectral efficiency of the communication beams corresponding to the first point columns is determined. Based on the difference in average spectral efficiency between the first point columns, a high spectral efficiency region for the terminal is determined in the terminal beam grid. A target communication beam corresponding to the candidate radio frequency link is determined within the high spectral efficiency region. A communication beam with a direction close to the target communication beam is selected as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency link. This invention effectively reduces beam search complexity and shortens the time for determining the preferred communication beam, while also approaching optimal system performance. The user experience is consistently high transmission rates, resulting in a higher perceived efficiency. Furthermore, the more base station antennas there are, the more effectively this invention demonstrates its advantage in reducing beam search complexity, making it applicable to existing 32TR and 64TR base stations, as well as the future planned 256TR base stations.

[0172] Reference Figure 6 The diagram illustrates a flowchart of a beam search method provided in an embodiment of the present invention. This method is applied to a base station, which is communicatively connected to a terminal. The base station is equipped with several base station radio frequency links, and each base station radio frequency link is connected to several base station antennas. Specifically, the method may include the following steps:

[0173] Step 601: Select one base station radio frequency link from several base station radio frequency links as the candidate base station radio frequency link. Select several third point columns in a preset base station beam grid, and use the communication beam corresponding to the third point column to receive the reference signal sent by the terminal. The base station beam grid includes several points arranged in rows and columns, each point corresponding to a communication beam in a direction, and the communication beam directions corresponding to points that are close in position in the base station beam grid are similar. The third point column includes several points arranged in one of the following forms: rows, columns, and diagonal lines.

[0174] After determining the target communication beam for each communication link, the terminal can send a reference signal to the base station. At this point, the base station can determine the communication beam it will use to send data to the terminal. Therefore, the base station can use multiple available communication beams to receive the reference signal to determine the communication beam with the highest communication spectral efficiency. The base station can be configured with multiple radio frequency links, and can sequentially determine the communication beam for each radio frequency link. Thus, one base station radio frequency link can be selected as a candidate base station radio frequency link from among several base station radio frequency links.

[0175] To improve the search efficiency for communication beams with high communication spectrum efficiency and reduce latency, a base station beam grid can be set up based on a preset codebook.

[0176] Specifically, a preset codebook can contain several communication beams available to the base station. A base station beam grid can be constructed based on this codebook, which can include several points arranged in rows and columns. Each point corresponds to a communication beam in a specific direction, and points located close to each other in the base station beam grid correspond to beams with similar directions. Several third point columns can be selected within the base station beam grid. These third point columns can contain points arranged in rows, columns, or diagonal lines. Subsequently, the communication beams corresponding to the points in the selected third point columns can be used to receive reference signals.

[0177] Step 602: Determine the average spectral efficiency of the communication beam corresponding to the third point column;

[0178] Subsequently, in order to quickly locate the position of the communication beam corresponding to the better communication spectrum efficiency in the beam grid, the average spectrum efficiency of the communication beam corresponding to the third point column can be determined, so as to know whether the third point column as a whole is in the region near the better communication spectrum efficiency.

[0179] Step 603: Based on the difference in average spectral efficiency between the third point columns, determine the high spectral efficiency region of the base station in the base station beam grid;

[0180] Generally, the larger the difference in average spectral efficiency between adjacent third point columns, the higher the spectral efficiency of the region between the third point columns can be considered. Therefore, based on the difference in average spectral efficiency between the third point columns, a high spectral efficiency region of the base station can be determined within the base station beam grid.

[0181] Step 604: Determine the target communication beam corresponding to the candidate radio frequency link in the high spectral efficiency region of the base station;

[0182] After determining the high spectral efficiency region of the base station, three scenarios are possible. The first is that at least one of the three third point columns between the two columns is located in the high spectral efficiency region. The second is that the communication beam corresponding to a point in the intermediate region between the two third point columns is located in the high spectral efficiency region. The third is that both of the three third point columns and the intermediate region between them are located in the high spectral efficiency region.

[0183] Therefore, the communication spectrum efficiency of the communication beams corresponding to different points in the high spectrum efficiency region of the base station can be determined again, and the communication beams corresponding to the points with higher communication spectrum efficiency in this range can be used as the target communication beams corresponding to the candidate radio frequency links.

[0184] Step 605: Select a communication beam that is close to the direction of the target communication beam as the target communication beam for other base station radio frequency links besides the candidate base station radio frequency links among the plurality of base station radio frequency links.

[0185] After identifying the target communication beam for the candidate RF links, when multiple RF links use communication beams in similar directions, the base station's communication performance in that direction can be effectively enhanced. Therefore, once the target communication beam for one base station RF link is determined, communication beams with similar directions can be found as target communication beams for other base station RF links, thus effectively reducing beam search complexity. After determining the communication beam for each RF link, the base station's analog precoding matrix F can be determined. RF The vector corresponding to the element fi in the matrix allows us to determine the analog precoding matrix F of the base station. RF .

[0186] Optionally, the step of determining the average spectral efficiency of the communication beam corresponding to the third point column includes: determining the communication spectral efficiency of the communication beam corresponding to each point in the third point column; and taking the average value of the communication spectral efficiency of the communication beam corresponding to each point in the third point column as the average spectral efficiency of the communication beam corresponding to the third point column.

[0187] To facilitate quickly locating the position of the communication beam corresponding to optimal communication spectral efficiency within the beam grid, the spectral efficiency of the communication beams corresponding to the third point column can be determined. This allows us to ascertain whether the third point column as a whole falls within the region of optimal communication spectral efficiency. Therefore, we can first determine the communication spectral efficiency of the communication beam corresponding to each point in the third point column.

[0188] After determining the communication spectral efficiency of the communication beam corresponding to each point in the third point column, the average value of the communication spectral efficiency of the communication beam corresponding to each point in the third point column can be calculated as the average spectral efficiency of the communication beam corresponding to the third point column.

[0189] Optionally, the step of determining a high spectral efficiency region of a base station in the base station beam grid based on the difference in average spectral efficiency between the third point columns includes: determining the difference in average spectral efficiency between adjacent third point columns; and taking the region formed by the adjacent third point columns with higher differences in the beam network as the high spectral efficiency region of the base station.

[0190] Generally, the larger the difference in average spectral efficiency between adjacent third point columns, the higher the spectral efficiency of the region between them can be considered. Therefore, we can first calculate the difference in average spectral efficiency between adjacent third point columns. If the difference is significant, it indicates the presence of points corresponding to communication beams with high spectral efficiency around the adjacent third point columns. Thus, the region formed by adjacent third point columns with high differences within the beam network can be considered a high spectral efficiency region for the base station.

[0191] Optionally, the step of determining the target communication beam corresponding to the candidate radio frequency link in the high spectral efficiency region of the base station includes: taking the adjacent third point column with high difference and the fourth point column located between the adjacent third point columns with high difference as candidate point columns; receiving the reference signal transmitted omnidirectionally by the base station using the communication beams corresponding to the candidate point columns respectively, and determining the communication spectral efficiency of the communication beams corresponding to the candidate point columns; and taking the communication beam with a communication spectral efficiency higher than the communication spectral efficiency of other communication beams as the target communication beam corresponding to the candidate radio frequency link.

[0192] Specifically, since there may be other point columns that are not selected as the third point column during the selection process, there may be other point columns between adjacent third point columns with high differences. The point columns between adjacent third point columns with high differences can be used as the fourth point column.

[0193] Subsequently, the reference signal transmitted omnidirectionally by the base station can be received using the communication beams corresponding to the points in the third and fourth point columns, respectively. Since the communication spectral efficiency of points in the high spectral efficiency region of the base station may already be determined, as in the third point column, it is not necessary to determine the communication spectral efficiency of all communication beams corresponding to points in the high spectral efficiency region of the base station. Therefore, only the communication beams in the high spectral efficiency region of the base station whose communication spectral efficiency has not been calculated, such as the communication beams corresponding to the points in the fourth point column, can be analyzed.

[0194] After determining the communication spectrum efficiency of all points in the high spectrum efficiency region of the base station, the communication beam with a higher communication spectrum efficiency than the corresponding communication spectrum efficiency of other communication beams, such as the communication beam with the highest communication spectrum efficiency, can be used as the target communication beam for the candidate communication link.

[0195] Optionally, the step of selecting a communication beam with a direction similar to the target communication beam as the target communication beam for other base station radio frequency links besides the candidate base station radio frequency links among the plurality of base station radio frequency links includes:

[0196] In the base station beam grid, points adjacent to the corresponding point of the target communication beam are identified as candidate points;

[0197] The communication spectrum efficiency of the communication beam corresponding to the candidate point is determined by receiving the reference signal transmitted omnidirectionally by the base station using the communication beam corresponding to the candidate point.

[0198] Based on the communication spectrum efficiency of the communication beams corresponding to the candidate points, several communication beams corresponding to the candidate points are selected as the target communication beams for other base station radio frequency links besides the candidate base station radio frequency links among the several base station radio frequency links.

[0199] Specifically, since points in the terminal beam grid that are close in location correspond to communication beam directions that are similar, in order to enable the terminal to obtain better communication performance, the communication beams whose target communication beam directions are similar to those of the candidate terminal RF links can be used as the target communication beams for the remaining terminal RF links. Therefore, points adjacent to the points corresponding to the target communication beams in the terminal beam grid can be determined as second candidate points.

[0200] Subsequently, the reference signal transmitted omnidirectionally by the base station can be received using the communication beam corresponding to the second candidate point to determine the communication spectral efficiency of the communication beam corresponding to the second candidate point. Since the communication spectral efficiency of the communication beams corresponding to points in the third and fourth point columns has already been determined during the process of determining the communication beams corresponding to the candidate terminal's radio frequency link, it is not necessary to determine the communication spectral efficiency of all communication beams corresponding to the second candidate points. Therefore, only the communication beams among the second candidate points whose communication spectral efficiency has not been calculated can be analyzed.

[0201] After determining the communication spectrum efficiency of the communication beam corresponding to the second candidate point, the communication beam corresponding to the second candidate point with high communication spectrum efficiency can be selected as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency links in the plurality of terminal radio frequency links.

[0202] Since the technical solutions for determining the target communication beam of each communication link by the base station are similar to those for determining the target communication beam of each communication link by the terminal, for details not described in detail, please refer to the description of the technical solution for determining the target communication beam of each communication link by the terminal.

[0203] This invention presents the algorithm complexity in actual simulation. Figure 7 This demonstrates the search counts of the proposed algorithm and the traversal search algorithm. To avoid the influence of randomness, the search count is the average of 1000 independent searches. The search count for each independent search 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 this search is counted as one independent search. By recording the average of 1000 independent searches using the above method, the search count can be obtained. Figure 7 The algorithm search complexity.

[0204] This simulation considers a very large-scale MIMO scenario. The base station deploys 256 antennas across 4 radio frequency (RF) links, with each RF link connecting 64 antennas. The user deploys 32 antennas across 2 RF links, with each RF link connecting 16 antennas. The complexity of the traversal search in the diagram is O(log n). Where N RF_BS For 64, M BS 4, N RF_MS For 16, M MSThe search count was 16, and the number of searches was 4,294,967,296. Because the number was too large, MATLAB did not retain all decimal places when using scientific notation; therefore, the graph shows a search count of 4,294,970,000. In contrast, the spatial interpolation method in this embodiment of the invention only required 59 searches. Furthermore, due to the significant difference in complexity between the traversal search and the spatial interpolation method, the computational complexity of the spatial interpolation method is almost invisible in the graph. It is clear that compared to the optimal traversal search method, the beam search scheme using the spatial interpolation method reduces complexity by 99.9999%, demonstrating a significant advantage in complexity.

[0205] In the above algorithm complexity calculation, the terminal is considered to be 32 TRs. Here, the terminal includes, but is not limited to, mobile phones in the B5G and 6G era, and may also be any other wireless device. Even considering a scenario where the terminal only deploys 8 TRs while the base station side remains unchanged at 256 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 will not have a significant impact when fewer antennas are deployed on the terminal side), demonstrating a significant advantage.

[0206] Figure 8 The figure shows the performance curves of the solution using the present invention. As can be seen from the figure, the solution using the present invention can achieve near-optimal system performance with low beam search complexity.

[0207] Reference Figure 9 The diagram shows a structural schematic of a beam search system provided in an embodiment of the present invention. The beam search system 900 includes a terminal 901 and a base station 902. The base station 902 is communicatively connected to the terminal 901. The base station 902 is equipped with a plurality of base station radio frequency links, each of which is connected to a plurality of base station antennas. The terminal 901 is equipped with a plurality of terminal radio frequency links, each of which is connected to a plurality of terminal antennas.

[0208] The terminal 901 is used to select one terminal radio frequency link from a plurality of terminal radio frequency links as a candidate terminal radio frequency link. This is achieved by selecting a plurality of first point columns in a preset terminal beam grid, and using the communication beam corresponding to the first point column to receive the reference signal transmitted omnidirectionally by the base station. The terminal beam grid includes a plurality of points arranged in rows and columns, each point corresponding to a communication beam in a direction. Points in close proximity in the terminal beam grid correspond to communication beams with similar directions. The first point column contains a plurality of points arranged in one of the following forms: rows, columns, or diagonal lines. The average spectral efficiency of the communication beams corresponding to the first point column is determined. Based on the difference in average spectral efficiency between the first point columns, a high spectral efficiency region is determined in the terminal beam grid. A target communication beam corresponding to the candidate radio frequency link is determined in the high spectral efficiency region. A communication beam with a direction similar to the target communication beam is selected as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency link among the plurality of terminal radio frequency links.

[0209] The base station 902 is used to select one base station radio frequency link from several base station radio frequency links as a candidate base station radio frequency link. This is achieved by selecting several third point columns in a preset base station beam grid, and using the communication beam corresponding to the third point column to receive the reference signal transmitted by the terminal using a target communication beam. The base station beam grid includes several points arranged in rows and columns, each point corresponding to a communication beam in a direction. Points in close proximity in the base station beam grid correspond to communication beams with similar directions. The third point column contains several points arranged in one of the following forms: rows, columns, or diagonal lines. The average spectral efficiency of the communication beam corresponding to the third point column is determined. Based on the difference in average spectral efficiency between the third point columns, a high spectral efficiency region for the base station is determined in the base station beam grid. The target communication beam corresponding to the candidate radio frequency link is determined in the high spectral efficiency region. A communication beam with a direction similar to the target communication beam is selected as the target communication beam for other base station radio frequency links besides the candidate base station radio frequency link among the several base station radio frequency links.

[0210] It should be noted that, for the sake of simplicity, the method embodiments are all described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0211] Reference Figure 10The diagram shows a structural block diagram of a beam search device provided in an embodiment of the present invention, which may specifically include the following modules:

[0212] The first signal receiving module 1001 is used to select one terminal radio frequency link as a candidate terminal radio frequency link from a plurality of terminal radio frequency links, and to select a plurality of first point columns in a preset terminal beam grid, and to receive the reference signal transmitted omnidirectionally by the base station using the communication beam corresponding to the first point column; wherein, the terminal beam grid includes a plurality of points arranged in a row and column form, each point corresponding to a communication beam in a direction, and the communication beam directions corresponding to points that are close in position in the terminal beam grid are similar; the first point column includes a plurality of points arranged in a row, column, or diagonal form;

[0213] The first spectral efficiency determination module 1002 is used to determine the average spectral efficiency of the communication beam corresponding to the first point column.

[0214] The first region determination module 1003 is used to determine the high spectral efficiency region of the terminal in the terminal beam grid based on the difference in average spectral efficiency between the first point columns.

[0215] The first beam determination module 1004 is used to determine the target communication beam corresponding to the candidate radio frequency link in the high spectral efficiency region of the terminal.

[0216] The second beam determination module 1005 is used to select a communication beam that is close to the direction of the target communication beam as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency links among the plurality of terminal radio frequency links.

[0217] Optionally, the first spectral efficiency determination module step includes:

[0218] The first spectral efficiency determination submodule is used to determine the communication spectral efficiency of the communication beam corresponding to each point in the first point column.

[0219] The first average spectral efficiency determination submodule is used to take the average value of the communication spectral efficiency of the communication beam corresponding to each point in the first point column as the average spectral efficiency of the communication beam corresponding to the first point column.

[0220] Optionally, the first region determination module includes:

[0221] The first difference determination submodule is used to determine the difference in average spectral efficiency between adjacent first point columns;

[0222] The first region determination submodule is used to identify the region formed by the adjacent first points with high differences in the beam network as the terminal high spectral efficiency region.

[0223] Optionally, the first beam determination module includes:

[0224] The first candidate point column determination submodule is used to take the adjacent first point column with high difference and the second point column located between the adjacent first point column with high difference as the first candidate point column;

[0225] The first candidate spectrum efficiency determination submodule is used to receive the reference signal transmitted omnidirectionally by the base station using the communication beam corresponding to the first candidate point column, and determine the communication spectrum efficiency of the communication beam corresponding to the first candidate point column.

[0226] The first target communication beam determination submodule is used to select the communication beam with a higher communication spectrum efficiency than the corresponding communication spectrum efficiency of other communication beams as the target communication beam corresponding to the candidate radio frequency link.

[0227] Optionally, the second beam determination module includes:

[0228] The second candidate point determination module is used to determine, in the terminal beam grid, a point adjacent to the corresponding point of the target communication beam as a candidate point;

[0229] The second candidate spectrum efficiency determination submodule is used to receive the reference signal transmitted omnidirectionally by the base station using the communication beam corresponding to the candidate point, and determine the communication spectrum efficiency of the communication beam corresponding to the candidate point.

[0230] The second target communication beam determination submodule is used to select communication beams corresponding to several candidate points based on the communication spectrum efficiency of the communication beams corresponding to the candidate points, and use them as target communication beams for other terminal radio frequency links besides the candidate terminal radio frequency links among the several terminal radio frequency links.

[0231] Reference Figure 11 The diagram illustrates a structural block diagram of a beam search device provided in an embodiment of the present invention. This device is applied to a base station, which is communicatively connected to a terminal. The base station is equipped with several base station radio frequency links, each of which is connected to several base station antennas. The device includes:

[0232] The second signal receiving module 1101 is used to select one base station radio frequency link from several base station radio frequency links as the candidate base station radio frequency link, and to select several third point columns in a preset base station beam grid, and to receive the reference signal sent by the terminal using the communication beam corresponding to the third point column; wherein, the base station beam grid includes several points arranged in a row and column form, each point corresponds to a communication beam in a direction, and the communication beam directions corresponding to points that are close in position in the base station beam grid are similar; the third point column includes several points arranged in one of the following forms: row, column, or diagonal line.

[0233] The second spectral efficiency determination module 1102 is used to determine the average spectral efficiency of the communication beam corresponding to the third dot column.

[0234] The second region determination module 1103 is used to determine the high spectral efficiency region of the base station in the base station beam grid based on the difference in average spectral efficiency between the third point columns.

[0235] The third beam determination module 1104 is used to determine the target communication beam corresponding to the candidate radio frequency link in the high spectrum efficiency region of the base station.

[0236] The fourth beam determination module 1105 is used to select a communication beam that is close to the direction of the target communication beam as the target communication beam for other base station radio frequency links besides the candidate base station radio frequency links among the plurality of base station radio frequency links.

[0237] Optionally, the second spectral efficiency determination module includes:

[0238] The second spectral efficiency determination submodule is used to determine the communication spectral efficiency of the communication beam corresponding to each point in the third point column.

[0239] The second average spectral efficiency determination submodule is used to take the average value of the communication spectral efficiency of the communication beam corresponding to each point in the third point column as the average spectral efficiency of the communication beam corresponding to the third point column.

[0240] Optionally, the second region determination module includes:

[0241] The second difference determination submodule is used to determine the difference in average spectral efficiency between adjacent third point columns;

[0242] The second region determination submodule is used to identify the region formed by the adjacent third points with high differences in the beam network as the high spectral efficiency region of the base station.

[0243] Optionally, the third beam determination module includes:

[0244] The third candidate point column determination submodule is used to take the adjacent third point column with the high difference and the fourth point column located between the adjacent third point column with the high difference as the second candidate point column;

[0245] The third candidate spectrum efficiency determination submodule is used to receive the reference signal transmitted omnidirectionally by the base station using the communication beam corresponding to the second candidate point column, and to determine the communication spectrum efficiency of the communication beam corresponding to the second candidate point column.

[0246] The third target communication beam determination submodule is used to select the communication beam with a higher communication spectrum efficiency than the corresponding communication spectrum efficiency of other communication beams as the target communication beam corresponding to the candidate radio frequency link.

[0247] Optionally, the fourth beam determination module includes:

[0248] The fourth second candidate point determination module is used to determine, in the base station beam grid, a point adjacent to the point corresponding to the target communication beam, as a second candidate point;

[0249] The fourth candidate spectrum efficiency determination submodule is used to receive the reference signal transmitted omnidirectionally by the base station using the communication beam corresponding to the second candidate point, and determine the communication spectrum efficiency of the communication beam corresponding to the second candidate point.

[0250] The fourth target communication beam determination submodule is used to select several communication beams corresponding to the second candidate points based on the communication spectrum efficiency of the communication beams corresponding to the second candidate points, as the target communication beams corresponding to other base station radio frequency links besides the candidate base station radio frequency links among the several base station radio frequency links.

[0251] As the device embodiment is basically similar to the method embodiment, the description is relatively simple, and relevant parts can be found in the description of the method embodiment.

[0252] In addition, embodiments of the present invention also provide an electronic device, such as... Figure 12 As shown, it includes a processor 1201, a communication interface 1202, a memory 1203, and a communication bus 1204. The processor 1201, the communication interface 1202, and the memory 1203 communicate with each other through the communication bus 1204.

[0253] Memory 1203 is used to store computer programs;

[0254] When processor 1201 executes the program stored in memory 1203, it performs the following steps:

[0255] One terminal radio frequency link is selected from several terminal radio frequency links as the candidate terminal radio frequency link. Several first point columns are selected in a preset terminal beam grid. The communication beam corresponding to the first point column is used to receive the reference signal transmitted omnidirectionally by the base station. The terminal beam grid includes several points arranged in a row and column form. Each point corresponds to a communication beam in one direction. Points with similar positions in the terminal beam grid correspond to communication beams with similar directions. The first point column includes several points arranged in a row, column, or diagonal form.

[0256] Determine the average spectral efficiency of the communication beam corresponding to the first point column;

[0257] Based on the difference in average spectral efficiency between the first point columns, a high spectral efficiency region for the terminal is determined in the terminal beam grid.

[0258] Determine the target communication beam corresponding to the candidate radio frequency link in the high spectral efficiency region of the terminal;

[0259] A communication beam whose direction is similar to the target communication beam is selected as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency link among the plurality of terminal radio frequency links.

[0260] Optionally, the step of determining the average spectral efficiency of the communication beam corresponding to the first point column includes:

[0261] Determine the communication spectrum efficiency of the communication beam corresponding to each point in the first point column;

[0262] The average spectral efficiency of the communication beam corresponding to each point in the first point column is taken as the average spectral efficiency of the communication beam corresponding to the first point column.

[0263] Optionally, the step of determining the high spectral efficiency region of the terminal in the terminal beam grid based on the difference in average spectral efficiency between the first point columns includes:

[0264] Determine the difference in average spectral efficiency between adjacent first point columns;

[0265] The region formed by the adjacent first points with high differences in the beam network is designated as the high spectral efficiency region of the terminal.

[0266] Optionally, the step of determining the target communication beam corresponding to the candidate radio frequency link in the high spectral efficiency region of the terminal includes:

[0267] The adjacent first point column with the high difference and the second point column located between the adjacent first point columns with the high difference are selected as candidate point columns.

[0268] The communication spectrum efficiency of the communication beams corresponding to the candidate point columns is determined by receiving the reference signals transmitted omnidirectionally by the base station using the communication beams corresponding to the candidate point columns.

[0269] The communication beam with a higher communication spectrum efficiency than the corresponding communication spectrum efficiency of other communication beams is selected as the target communication beam for the candidate radio frequency link.

[0270] Optionally, the step of selecting a communication beam with a direction similar to the target communication beam as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency links among the plurality of terminal radio frequency links includes:

[0271] In the terminal beam grid, a point adjacent to the point corresponding to the target communication beam is determined as a first candidate point;

[0272] The communication spectrum efficiency of the communication beam corresponding to the first candidate point is determined by receiving the reference signal transmitted omnidirectionally by the base station using the communication beam corresponding to the first candidate point.

[0273] Based on the communication spectrum efficiency of the communication beam corresponding to the first candidate point, several communication beams corresponding to the first candidate points are selected as target communication beams for other terminal radio frequency links besides the candidate terminal radio frequency links among the several terminal radio frequency links.

[0274] Processor 1201 is also used to perform the following steps:

[0275] One base station radio frequency link is selected from several base station radio frequency links as the candidate base station radio frequency link. Several third point columns are selected in a preset base station beam grid, and the reference signal sent by the terminal is received by the communication beam corresponding to the third point column. The base station beam grid includes several points arranged in a row and column form, each point corresponds to a communication beam in a direction, and the communication beam directions corresponding to points that are close in position in the base station beam grid are similar. The third point column includes several points arranged in a row, column, or diagonal form.

[0276] Determine the average spectral efficiency of the communication beam corresponding to the third point column;

[0277] Based on the difference in average spectral efficiency between the third point columns, a high spectral efficiency region for the base station is determined in the base station beam grid.

[0278] Determine the target communication beam corresponding to the candidate radio frequency link in the high spectral efficiency region of the base station;

[0279] A communication beam whose direction is similar to the target communication beam is selected as the target communication beam for other base station radio frequency links besides the candidate base station radio frequency link among the plurality of base station radio frequency links.

[0280] Optionally, the step of determining the average spectral efficiency of the communication beam corresponding to the third point column includes:

[0281] The communication spectrum efficiency of the communication beam corresponding to each point in the third point column is determined respectively;

[0282] The average spectral efficiency of the communication beam corresponding to each point in the third point column is taken as the average spectral efficiency of the communication beam corresponding to the third point column.

[0283] Optionally, the step of determining the high spectral efficiency region of the base station in the base station beam grid based on the difference in average spectral efficiency between the third point columns includes:

[0284] Determine the difference in average spectral efficiency between adjacent third point columns;

[0285] The region formed by listing the adjacent third points with high differences in the beam network is designated as the high spectral efficiency region of the base station.

[0286] Optionally, the step of determining the target communication beam corresponding to the candidate radio frequency link in the high spectral efficiency region of the base station includes:

[0287] The adjacent third point column with the highest difference, and the fourth point column located between the adjacent third point columns with the highest difference, are selected as candidate point columns.

[0288] The communication spectrum efficiency of the communication beams corresponding to the candidate point columns is determined by receiving the reference signals transmitted omnidirectionally by the base station using the communication beams corresponding to the candidate point columns.

[0289] The communication beam with a higher communication spectrum efficiency than the corresponding communication spectrum efficiency of other communication beams is selected as the target communication beam for the candidate radio frequency link.

[0290] Optionally, the step of selecting a communication beam with a direction similar to the target communication beam as the target communication beam for other base station radio frequency links besides the candidate base station radio frequency links among the plurality of base station radio frequency links includes:

[0291] In the base station beam grid, a point adjacent to the point corresponding to the target communication beam is determined as a second candidate point;

[0292] The communication spectrum efficiency of the communication beam corresponding to the second candidate point is determined by receiving the reference signal transmitted omnidirectionally by the base station using the communication beam corresponding to the second candidate point.

[0293] Based on the communication spectrum efficiency of the communication beam corresponding to the second candidate point, several communication beams corresponding to the second candidate points are selected as target communication beams for other base station radio frequency links besides the candidate base station radio frequency links among the several base station radio frequency links.

[0294] The communication bus mentioned above can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in the diagram, but this does not mean that there is only one bus or one type of bus.

[0295] The communication interface is used for communication between the aforementioned terminal and other devices.

[0296] The memory may include random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Optionally, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0297] The processors mentioned above can be general-purpose processors, including central processing units (CPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0298] like Figure 13 As shown, in another embodiment of the present invention, a computer-readable storage medium 1301 is also provided, which stores instructions that, when run on a computer, cause the computer to execute the beam search method described in the above embodiment.

[0299] In another embodiment of the present invention, a computer program product containing instructions is also provided, which, when run on a computer, causes the computer to execute the beam search method described in the above embodiments.

[0300] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk (SSD)).

[0301] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0302] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0303] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A beam search method, characterized in that, It is applied to a terminal that is communicatively connected to a base station. The terminal is equipped with several terminal radio frequency links, and each terminal radio frequency link is connected to several terminal antennas. The method includes: One terminal radio frequency link is selected from several terminal radio frequency links as the candidate terminal radio frequency link. Several first point columns are selected in a preset terminal beam grid. The communication beam corresponding to the first point column is used to receive the reference signal transmitted omnidirectionally by the base station. The terminal beam grid includes several points arranged in a row and column form. Each point corresponds to a communication beam in one direction. Points with similar positions in the terminal beam grid correspond to communication beams with similar directions. The first point column includes several points arranged in a row, column, or diagonal form. Determine the average spectral efficiency of the communication beam corresponding to the first point column; Based on the difference in average spectral efficiency between the first point columns, a high spectral efficiency region for the terminal is determined in the terminal beam grid. Determine the target communication beam corresponding to the radio frequency link of the candidate terminal in the high spectral efficiency region of the terminal; A communication beam whose direction is similar to the target communication beam is selected as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency link among the plurality of terminal radio frequency links.

2. The method according to claim 1, characterized in that, The step of determining the average spectral efficiency of the communication beam corresponding to the first point column includes: Determine the communication spectrum efficiency of the communication beam corresponding to each point in the first point column; The average spectral efficiency of the communication beam corresponding to each point in the first point column is taken as the average spectral efficiency of the communication beam corresponding to the first point column.

3. The method according to claim 1, characterized in that, The step of determining the high spectral efficiency region of the terminal in the terminal beam grid based on the difference in average spectral efficiency between the first point columns includes: Determine the difference in average spectral efficiency between adjacent first point columns; The region formed by the adjacent first points with high differences in the beam network is designated as the high spectral efficiency region of the terminal.

4. The method according to claim 3, characterized in that, The step of determining the target communication beam corresponding to the radio frequency link of the candidate terminal in the high spectral efficiency region of the terminal includes: The adjacent first point column with the high difference and the second point column located between the adjacent first point columns with the high difference are selected as candidate point columns. The communication spectrum efficiency of the communication beams corresponding to the candidate point columns is determined by receiving the reference signals transmitted omnidirectionally by the base station using the communication beams corresponding to the candidate point columns. The communication beam with a higher communication spectrum efficiency than the corresponding communication spectrum efficiency of other communication beams is selected as the target communication beam for the radio frequency link of the candidate terminal.

5. The method according to claim 1, characterized in that, The step of selecting a communication beam with a direction similar to the target communication beam as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency links among the plurality of terminal radio frequency links includes: In the terminal beam grid, a point adjacent to the point corresponding to the target communication beam is determined as a first candidate point; The communication spectrum efficiency of the communication beam corresponding to the first candidate point is determined by receiving the reference signal transmitted omnidirectionally by the base station using the communication beam corresponding to the first candidate point. Based on the communication spectrum efficiency of the communication beam corresponding to the first candidate point, several communication beams corresponding to the first candidate points are selected as target communication beams for other terminal radio frequency links besides the candidate terminal radio frequency links among the several terminal radio frequency links.

6. A beam search method, characterized in that, It is applied to a base station, which is communicatively connected to a terminal. The base station is deployed with several base station radio frequency links, and each base station radio frequency link is connected to several base station antennas. The method includes: One base station radio frequency link is selected from several base station radio frequency links as the candidate base station radio frequency link. Several third point columns are selected in a preset base station beam grid, and the reference signal sent by the terminal is received by the communication beam corresponding to the third point column. The base station beam grid includes several points arranged in a row and column form, each point corresponds to a communication beam in a direction, and the communication beam directions corresponding to points that are close in position in the base station beam grid are similar. The third point column includes several points arranged in a row, column, or diagonal form. Determine the average spectral efficiency of the communication beam corresponding to the third point column; Based on the difference in average spectral efficiency between the third point columns, a high spectral efficiency region for the base station is determined in the base station beam grid. In the high spectral efficiency region of the base station, the target communication beam corresponding to the radio frequency link of the candidate base station is determined; A communication beam whose direction is similar to the target communication beam is selected as the target communication beam for other base station radio frequency links besides the candidate base station radio frequency link among the plurality of base station radio frequency links.

7. A beam search system, characterized in that, The beam search system includes a terminal and a base station; the base station is communicatively connected to the terminal; the base station is equipped with several base station radio frequency links, each of which is connected to several base station antennas; the terminal is equipped with several terminal radio frequency links, each of which is connected to several terminal antennas. The terminal is used to select one terminal radio frequency link from several terminal radio frequency links as a candidate terminal radio frequency link. This is achieved by selecting several first point columns in a preset terminal beam grid, and using the communication beam corresponding to the first point column to receive the reference signal transmitted omnidirectionally by the base station. The terminal beam grid includes several points arranged in rows and columns, each point corresponding to a communication beam in a direction. Points in close proximity in the terminal beam grid correspond to communication beams with similar directions. The first point column contains several points arranged in one of the following forms: rows, columns, or diagonal lines. The average spectral efficiency of the communication beams corresponding to the first point column is determined. Based on the difference in average spectral efficiency between the first point columns, a high spectral efficiency region for the terminal is determined in the terminal beam grid. A target communication beam corresponding to the candidate terminal radio frequency link is determined within the high spectral efficiency region. A communication beam with a direction similar to the target communication beam is selected as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency link among the several terminal radio frequency links. The base station is used to select one base station radio frequency link from several base station radio frequency links as a candidate base station radio frequency link. This is achieved by selecting several third point columns in a preset base station beam grid, and using the communication beam corresponding to the third point column to receive the reference signal transmitted by the terminal using a target communication beam. The base station beam grid includes several points arranged in rows and columns, each point corresponding to a communication beam in a direction. Points in close proximity in the base station beam grid correspond to communication beams with similar directions. The third point column contains several points arranged in one of the following forms: rows, columns, or diagonal lines. The average spectral efficiency of the communication beam corresponding to the third point column is determined. Based on the difference in average spectral efficiency between the third point columns, a high spectral efficiency region for the base station is determined in the base station beam grid. The target communication beam corresponding to the candidate base station radio frequency link is determined in the high spectral efficiency region. A communication beam with a direction similar to the target communication beam is selected as the target communication beam for other base station radio frequency links besides the candidate base station radio frequency link among the several base station radio frequency links.

8. A beam search device, characterized in that, It is applied to a terminal that is communicatively connected to a base station. The terminal is equipped with several terminal radio frequency links, and each terminal radio frequency link is connected to several terminal antennas. The device includes: The first signal receiving module is used to select one terminal radio frequency link from several terminal radio frequency links as the candidate terminal radio frequency link, and to select several first point columns in a preset terminal beam grid, and to receive the reference signal transmitted omnidirectionally by the base station using the communication beam corresponding to the first point column; wherein, the terminal beam grid includes several points arranged in a row and column form, each point corresponding to a communication beam in a direction, and the communication beam directions corresponding to points that are close in position in the terminal beam grid are similar; the first point column includes several points arranged in a row, column, or diagonal form; The first spectral efficiency determination module is used to determine the average spectral efficiency of the communication beam corresponding to the first point column. The first region determination module is used to determine the high spectral efficiency region of the terminal in the terminal beam grid based on the difference in average spectral efficiency between the first point columns. The first beam determination module is used to determine the target communication beam corresponding to the radio frequency link of the candidate terminal in the high spectral efficiency region of the terminal. The second beam determination module is used to select a communication beam that is close to the direction of the target communication beam as the target communication beam for other terminal radio frequency links besides the candidate terminal radio frequency links among the plurality of terminal radio frequency links.

9. A beam search device, characterized in that, It is applied to a base station, which is communicatively connected to a terminal. The base station is equipped with several base station radio frequency links, and each base station radio frequency link is connected to several base station antennas. The device includes: The second signal receiving module is used to select one base station radio frequency link from several base station radio frequency links as the candidate base station radio frequency link, and to select several third point columns in a preset base station beam grid, and to receive the reference signal sent by the terminal using the communication beam corresponding to the third point column; wherein, the base station beam grid includes several points arranged in a row and column form, each point corresponds to a communication beam in a direction, and the communication beam directions corresponding to points that are close in position in the base station beam grid are similar; the third point column includes several points arranged in a row, column, or diagonal form; The second spectral efficiency determination module is used to determine the average spectral efficiency of the communication beam corresponding to the third dot column. The second region determination module is used to determine the high spectral efficiency region of the base station in the base station beam grid based on the difference in average spectral efficiency between the third point columns. The third beam determination module is used to determine the target communication beam corresponding to the radio frequency link of the candidate base station in the high spectral efficiency region of the base station. The fourth beam determination module is used to select a communication beam with a direction similar to the target communication beam as the target communication beam for other base station radio frequency links besides the candidate base station radio frequency links among the plurality of base station radio frequency links.

10. An electronic device, characterized in that, It includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; The memory is used to store computer programs; When the processor executes a program stored in the memory, it implements the method as described in any one of claims 1-6.

11. One or more computer-readable media having instructions stored thereon that, when executed by one or more processors, cause the processors to perform the method as described in any one of claims 1-6.

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