Base station coverage enhancement method and apparatus, storage medium, and electronic device

Abstract

The present invention relates to the technical field of communications, and provides a base station coverage enhancement method and apparatus, a storage medium, and an electronic device. The method comprises: receiving a random access request message of a terminal device, and measuring corresponding broadcast beam information; on the basis of the broadcast beam information, determining an expected forming gain graph of beam directions of a broadcast beam, on the basis of the expected forming gain graph, selecting a target template from forming templates supported by a base station antenna as an adjustment target beam, updating an expected receiving power in the beam directions, and establishing communication connection with the terminal device at the expected receiving power; and in the process of service communication with the terminal device, determining a beam gain difference value between a dedicated channel beam and the broadcast beam as well as a crowd tidal difference value of the terminal device, and realizing beam forming on the basis of the beam gain difference value and the crowd tidal difference value.

Description

Base station coverage enhancement method, device, storage medium and electronic device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202311509853.3 filed in China on November 13, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the field of communication technology, and in particular to a base station coverage enhancement method, a base station coverage enhancement device, an electronic device, and a computer-readable storage medium. Background Art

[0004] In the fifth generation mobile communication technology (5G), the base station broadcasts the power and channel configuration information of the uplink random access channel in the uplink direction, instructing the terminal device to initiate uplink access under the corresponding broadcast channel synchronization signal and PBCH block (SSB) beam. The configuration of the uplink channel is generally fixed. In the downlink direction, SSB generally uses fixed gain beam scanning, but dynamic beamforming is used to track users on dedicated channels such as control channels and data channels to improve downlink coverage capabilities. For the coverage area of ​​the cell, it is generally covered by sampling and fixing the user concentration area in the initial establishment.

[0005] Related technologies use antenna shaping with equal gain at base stations. Therefore, when users access the network, the shaping gain is not distributed rationally, and users far from the base station are prone to weak uplink coverage. In addition, when improving downlink coverage capabilities, due to inconsistent coverage of service channels and broadcast channels, broadcast holes, i.e., idle blind spots, will appear in some areas. At the same time, in terms of enhancing the deep coverage of aggregated users, when users move in a "tidal" regular manner, the base station cannot take into account the changes in coverage requirements brought about by changes in user locations.

[0006] Summary of the Invention

[0007] The purpose of the present disclosure is to provide a base station coverage enhancement method, a base station coverage enhancement device, an electronic device and a computer-readable storage medium, so as to solve to a certain extent the problems existing in the related technologies, such as unreasonable allocation of shaped gain, the occurrence of idle state blind spots, and the inability of the base station to take into account the changes in coverage requirements caused by the changes in the user's position when the user moves in a "tidal" regular manner.

[0008] According to the first aspect of the present disclosure, a base station coverage enhancement method is provided, including: receiving a random access request message from a terminal device, and measuring the broadcast beam information of a corresponding random broadcast channel; determining an expected shaping gain diagram of the beam direction of each broadcast beam based on the broadcast beam information, selecting a target template from the shaping templates supported by the base station antenna as an adjusted target beam based on the expected shaping gain diagram, and updating the expected receiving power in the beam direction, and establishing a communication connection with the terminal device with the expected receiving power; in the process of business communication with the terminal device, determining the beam gain difference and crowd tidal difference between a dedicated channel beam and the broadcast beam, and implementing beam shaping based on the beam gain difference and the crowd tidal difference.

[0009] In an exemplary embodiment of the present disclosure, the broadcast beam information includes a signal-to-noise ratio, an arrival angle, and a time delay; after measuring the broadcast beam information of the corresponding random broadcast channel, the method further includes: determining the location information of the terminal device based on the arrival angle and the time delay, the location information including the distance from the terminal device to the base station and the random channel beam corresponding to the received signal; determining the wireless noise floor in the beam direction of the random channel beam corresponding to the received signal based on the signal-to-noise ratio, and updating the expected received power in the beam direction based on the wireless noise floor, and establishing a communication connection with the terminal device with the expected received power.

[0010] In an exemplary embodiment of the present disclosure, determining the expected shaping gain pattern of each beam direction of the random broadcast channel based on the broadcast beam information includes: determining the location information of the terminal device based on the arrival angle and the time delay, the location information including the distance from the terminal device to the base station and the random channel beam corresponding to the received signal; determining the farthest user distribution in each broadcast beam direction based on the location information, and determining the expected shaping gain pattern based on the farthest user distribution.

[0011] In an exemplary embodiment of the present disclosure, the determining of the beam gain difference and the crowd tidal difference between the dedicated channel beam and the broadcast beam, and the implementation of beamforming based on the beam gain difference and the crowd tidal difference, includes: calculating the beam gain difference between the dedicated channel beam and each of the broadcast beams, and reallocating the power configuration of each beam direction of the broadcast beam based on the beam gain difference; obtaining the measurement data of the terminal device, rasterizing the measurement data, identifying the crowd tidal difference through a clustering algorithm, and adjusting the output lobe based on the crowd tidal difference.

[0012] In an exemplary embodiment of the present disclosure, the reallocation of the power configuration of each beam direction based on the beam gain difference includes: determining the maximum beam gain difference in each beam direction based on the beam gain difference in each beam direction of the broadcast beam; calculating the average value of the maximum beam gain difference in each beam direction, and reallocating the power configuration of each beam direction of the broadcast beam based on the average value of the maximum beam gain difference.

[0013] In an exemplary embodiment of the present disclosure, the power configuration of each beam direction of the broadcast beam is redistributed based on the average value of the maximum beam gain difference, including: calculating the ratio of the total cell power upper limit of the broadcast beam to the total number of beams of the broadcast beam; if the average value of the maximum beam gain difference is less than or equal to the ratio, superimposing the corresponding maximum beam gain difference on the current beam gain configuration of each broadcast beam; otherwise: if the maximum beam gain difference is less than 0, superimposing the corresponding maximum beam gain difference on the current beam gain configuration of each broadcast beam; if the maximum beam gain difference is greater than 0, superimposing the product of the corresponding maximum beam gain difference and the beam gain adjustment coefficient on the current beam gain configuration of each broadcast beam, wherein the beam gain adjustment coefficient must meet preset conditions.

[0014] In an exemplary embodiment of the present disclosure, the acquisition of measurement data of the terminal device, rasterization of the measurement data, identification of the crowd tidal difference value through a clustering algorithm, and adjustment of the output lobe according to the crowd tidal difference value include: collecting the measurement data of the terminal device, and rasterization of the measurement data according to the geographical location, wherein each geographical grid corresponds to a grid number; counting the number of sampling points in each of the geographical grids, and clustering the geographical grids with a number of sampling points greater than a preset threshold into continuous grids to obtain the clustering area of ​​the covered terminal device; according to the grid numbers of the geographical grids contained in this clustering area, identifying the clustering grid difference of the geographical grid contained in this clustering area compared with the previous one as the crowd tidal difference value; when the crowd tidal difference value exceeds the preset threshold, selecting an antenna waveform that adapts to the clustering grid contour and adjusting the output lobe, wherein the clustering grid contour is a polygon composed of the outer boundaries of the clustering grids.

[0015] According to the second aspect of the present disclosure, a base station coverage enhancement device is provided, including: a request receiving module for receiving a random access request message of a terminal device and measuring the broadcast beam information of the corresponding random broadcast channel; an uplink access enhancement module for determining an expected shaping gain diagram of the beam direction of each broadcast beam based on the broadcast beam information, selecting a target template from the shaping templates supported by the base station antenna as an adjusted target beam based on the expected shaping gain diagram, and updating the expected receiving power in the beam direction, and establishing a communication connection with the terminal device with the expected receiving power; a beam forming module for determining the beam gain difference and the crowd tidal difference between the dedicated channel beam and the broadcast beam during service communication with the terminal device, and implementing beam forming based on the beam gain difference and the crowd tidal difference.

[0016] According to a third aspect of the present disclosure, an electronic device is provided, comprising: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to execute any one of the above-mentioned methods by executing the executable instructions.

[0017] According to a fourth aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, any one of the methods described above is implemented.

[0018] The exemplary embodiments of the present disclosure may have some or all of the following beneficial effects:

[0019] In the base station coverage enhancement method provided in the example implementation of the present disclosure, a random access request message of a terminal device is received, and the broadcast beam information of the corresponding random broadcast channel is measured; the expected shaping gain diagram of each broadcast beam beam direction is determined based on the broadcast beam information, a target template is selected from the shaping templates supported by the base station antenna as the adjusted target beam based on the expected shaping gain diagram, and the expected received power in the beam direction is updated to establish a communication connection with the terminal device at the expected received power; in the process of business communication with the terminal device, the beam gain difference between the dedicated channel beam and the broadcast beam and the crowd tidal difference value of the terminal device are determined, and beam shaping is implemented based on the beam gain difference and the crowd tidal difference value. On the one hand, the embodiment of the present disclosure performs differentiated shaping on the uplink channel through the expected shaping gain diagram, thereby achieving differentiated enhancement of the uplink coverage of the cell and improving the access performance of users at the edge of the cell. On the other hand, after establishing a connection with a terminal device, the embodiment of the present disclosure can locate the coverage difference between the cell broadcast channel and the dedicated channel through the above-mentioned beam gain difference, realize the differentiated power output of the beam, maximize the effectiveness of the cell coverage power, reduce the cell's "idle state blind spot", and enhance the cell's downlink coverage. In addition, the embodiment of the present disclosure can also use the terminal device shaping pointing of the beam through the above-mentioned crowd tidal difference value to evaluate and predict the regularity of user group movement from the time dimension, and instruct the antenna shaping direction to dynamically adjust with the tidal movement of people, thereby realizing dynamic adjustment of cell coverage within a limited range, solving the requirement for deep coverage in tidal places, reducing the site planning investment for deep coverage, and improving the efficiency of wireless resource utilization.

[0020] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0022] FIG1 schematically shows a flow chart of a base station coverage enhancement method according to an embodiment of the present disclosure;

[0023] FIG2 schematically shows a PRACH channel equal-gain antenna horizontal beam pattern according to one embodiment of the present disclosure;

[0024] FIG3 schematically shows a PRACH channel variable gain antenna horizontal beam pattern according to one embodiment of the present disclosure;

[0025] FIG4 schematically illustrates an “idle state blind zone” caused by the difference in shaping of dedicated channels and public channels according to an embodiment of the present disclosure;

[0026] FIG5 schematically shows a schematic diagram of SSB differentiated collaborative shaping according to an embodiment of the present disclosure;

[0027] FIG6 schematically shows a schematic diagram of a dynamic antenna shaping solution based on the “tidal” flow of customer groups according to an embodiment of the present disclosure;

[0028] FIG7 schematically illustrates customer group clustering and a profile diagram according to one embodiment of the present disclosure;

[0029] FIG8 schematically shows a block diagram of a base station coverage enhancement device according to an embodiment of the present disclosure;

[0030] FIG9 schematically shows a schematic diagram of a hardware implementation device for dynamic beamforming according to an embodiment of the present disclosure;

[0031] FIG10 shows a schematic structural diagram of an electronic device suitable for implementing the embodiments of the present disclosure. DETAILED DESCRIPTION

[0032] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present disclosure will be more comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or that other methods, components, devices, steps, etc. may be employed. In other cases, well-known technical solutions are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0033] In addition, the accompanying drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. Identical reference numerals in the figures denote identical or similar parts, and thus repetitive descriptions thereof will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities that do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0034] In 5G New Radio (NR), the Synchronization Signal and PBCH (SSB) block consists of three parts: the Primary Synchronization Signals (PSS), the Secondary Synchronization Signals (SSS), and the PBCH. According to 3rd Generation Partnership Project (3GPP) TS 38.331, SSB can use up to eight beams (in the Sub6G frequency band using Frequency Division Duplexing (FDD) and the Sub3G frequency band using Time Division Duplexing (TDD)). In TR38.802, when a connection is established between a user equipment (UE) and the next generation Node B (gNB), the initial access process of an idle user uses SSB as a pulse transmission in the downlink direction, that is, the transmission and receiving point (TRP) beam scanning and the UE beam scanning establish a pair of beam links.

[0035] In the related technology, in the uplink direction, the base station broadcasts the power and channel configuration information of the uplink physical random access channel (PRACH) through the system information block (SIB) 2, instructing the user to initiate uplink access under the corresponding SSB beam. The configuration of the uplink channel is generally fixed; in the downlink direction, SSB generally adopts fixed gain beam scanning, but uses dynamic beamforming on dedicated channels such as control channels and data channels to track users and improve downlink coverage capabilities; for the coverage area of ​​the cell, it is generally covered by sampling and fixing the user gathering areas in the initial establishment. In densely populated areas such as buildings and residential areas, indoor construction is adopted to improve indoor coverage.

[0036] Exemplarily, the related technology mainly implements SSB beamforming through the following embodiments:

[0037] Example 1: The configuration of the uplink access channel is optimized by measuring the random access preamble sequence corresponding to the synchronization signal / physical broadcast channel block (SSB), random access time-frequency resource (RACH occasion), working bandwidth part (BWP), network slice, etc. through network equipment. This method proposes measuring the uplink access signal of the terminal for different services and different SSB lobes. However, since the current base station uses antenna shaping with the same gain, the location distribution of users near the base station is different. Users far away from the base station are prone to weak uplink coverage, while near-end users do not need a large shaping gain, which will lead to unreasonable shaping gain distribution.

[0038] Example 2: By collecting beamforming problem modeling information for users who wish to receive multicast services and using this information to establish a multi-antenna multicast beamforming design problem model, a final normalized beamforming vector is obtained to evenly distribute transmit power in the direction of each user, thereby meeting the channel requirements of multicast users. This method, based on downlink channel matrix estimation, can improve downlink coverage performance, but it can easily cause inconsistencies in coverage between service channels and broadcast channels, resulting in broadcast holes in some areas, i.e., idle blind spots.

[0039] Embodiment 3: By performing channel estimation on the multiple antennas and estimating the beamforming weight vector based on the spatial parameter estimation, the base station antenna determines the antenna beamforming according to the characteristics of the environment, thereby maximizing the base station coverage efficiency. This method achieves enhanced deep coverage of aggregated users by beamforming the user with the strongest incoming beam direction. This method is suitable for tracking a single user, but when the number of users is greater than the number of beams, the base station cannot select a beam that takes into account the majority to maximize the beamforming effect.

[0040] In order to solve the above-mentioned problems existing in the related art, the embodiments of the present disclosure provide a base station coverage enhancement method, a base station coverage enhancement device, an electronic device and a computer-readable storage medium.

[0041] The following is a detailed description of the embodiments of the present disclosure:

[0042] This exemplary embodiment first provides a base station coverage enhancement method. Referring to FIG1 , the base station coverage enhancement method specifically includes the following steps:

[0043] Step S110: receiving a random access request message from a terminal device and measuring broadcast beam information of a corresponding random broadcast channel;

[0044] Step S120: Determine the expected beamforming gain pattern for each broadcast beam direction based on the broadcast beam information, select a target template from the beamforming templates supported by the base station antenna based on the expected beamforming gain pattern as the target beam to be adjusted, and update the expected received power in the beam direction. Establish a communication connection with the terminal device based on the expected received power.

[0045] Step S130: During the service communication process with the terminal device, the beam gain difference between the dedicated channel beam and the broadcast beam and the crowd tidal difference of the terminal device are determined, and beamforming is implemented based on the beam gain difference and the crowd tidal difference.

[0046] The base station coverage enhancement method provided by the embodiment of the present disclosure, on the one hand, performs differential shaping on the uplink channel through the expected shaping gain diagram, thereby achieving differentiated enhancement of the uplink coverage of the cell and improving the access performance of users at the edge of the cell. On the other hand, after establishing a connection with the terminal device, the embodiment of the present disclosure can locate the coverage difference between the cell broadcast channel and the dedicated channel through the above-mentioned beam gain difference, achieve differentiated power output of the beam, maximize the effectiveness of the cell coverage power, reduce the cell's "idle state blind spot", and enhance the cell's downlink coverage. In addition, the embodiment of the present disclosure can also use the terminal device shaping pointing of the beam through the above-mentioned crowd tidal difference value to evaluate and predict the regularity of user group movement from the time dimension, and instruct the antenna shaping direction to dynamically adjust with the tidal movement of people, so as to achieve dynamic adjustment of cell coverage within a limited range, solve the requirement of deep coverage in tidal places, reduce the site planning investment for deep coverage, and improve the efficiency of wireless resource utilization.

[0047] Next, in another embodiment, the above steps are described in more detail.

[0048] In step S110 , a random access request message from a terminal device is received, and broadcast beam information of a corresponding random broadcast channel is measured.

[0049] The broadcast beam information of the random broadcast channel corresponding to the above measurement may specifically be the random access channel or PRACH channel beam information corresponding to the measurement.

[0050] The disclosed embodiments are used for beamforming in 5G New Radio (NR) technology. The NR system uses beamforming technology to form a narrow beam with more concentrated energy and stronger directionality for each type of channel and signal. However, compared with a wide beam, the coverage of a narrow beam is limited, and one beam cannot completely cover all users in the cell. Therefore, NR introduces a beam scanning method to cover all users in the entire cell, that is, the base station can send a beam direction at a certain moment, and send beams in different directions at multiple moments to cover the entire cell. As shown in Figure 2, it is a schematic diagram of beam scanning. In each beam, PSS, SSS, PBCH, and PBCH demodulation reference signal (DMRS) (DMRS for PBCH) must be configured so that the UE can achieve downlink synchronization, and PSS, SSS, PBCH, and DMRS for PBCH must be sent at the same time. To ensure that the PSS, SSS, PBCH, and DMRS for PBCH can be transmitted simultaneously, the NR system combines the PSS, SSS, PBCH, and DMRS for PBCH into a synchronization signal block (SSB). The corresponding beam is called an SSB beam. In the disclosed embodiments, the broadcast beam is the SSB beam transmitted by the base station to the user, and the terminal device is the terminal device used by the user. For example, the terminal device can be a mobile terminal device such as a smartphone.

[0051] In the NR system, the terminal device demodulates the SSB beam when it is turned on, obtains the cell time-frequency resource location and broadcast message, and determines whether to initiate random access. During the random access process, the terminal device selects a suitable SSB beam and sends a random access on its corresponding physical random access channel (PRACH). There is a corresponding relationship between the PRACH channel and the SSB beam, and the base station can identify whether the cell is at the cell edge and whether there is insufficient signal coverage by measuring the received signal of the PRACH. In the embodiment of the present disclosure, the random broadcast channel or random access channel is the PRACH channel corresponding to the SSB beam selected by the terminal device, and the broadcast beam information is the beam information of the selected SSB beam. The beam information may include the SSB beam ID corresponding to the PRACH channel, signal strength such as reference signal received power (RSRP), signal to interference plus noise ratio (SINR), angle of arrival (AOA) and time delay (TA).

[0052] In the disclosed embodiment, a terminal device and a base station establish a communication connection through messages MSG1 to MSG4. MSG1 is a random access request message sent by a mobile terminal to a base station, containing the mobile terminal's identity information, a random access code, and an identifier for the system type. After receiving MSG1, the base station responds with a message MSG2 to the mobile terminal. MSG2 is a random access confirmation message sent by the base station to the mobile terminal. MSG2 contains the random access code, the base station's identity information, and a timeslot number. After receiving MSG2, the mobile terminal sends a message MSG3 in the designated timeslot number. MSG3 is a random access complete message sent by the mobile terminal to the base station. MSG3 contains the mobile terminal's identity information, a temporary identifier for encrypted communications, and an identifier for the system type. After receiving MSG3, the base station generates a key for encrypted communications and sends a message MSG4 to the mobile terminal. MSG4 is a random access complete confirmation message sent by the base station to the mobile terminal. MSG4 contains the key generated by the base station for encrypted communications. After receiving MSG4, the mobile terminal can use this key for encrypted communications with the base station. The random access request message is the random access request message MSG1 sent by the mobile terminal to the base station.

[0053] In a specific embodiment, receiving a random access request message from a terminal device and measuring the corresponding random access channel beam information can be implemented as follows: After the terminal device is powered on or enters a cell coverage area, it completes downlink synchronization and reads the SSB beam information, and completes the preamble access request via the MSG1 message on the PRACH channel. The base station receives and measures information such as the SSB beam ID, signal strength RSRP, signal-to-noise ratio SINR, angle of arrival (AOA), and delay (TA) corresponding to the PRACH.

[0054] Related technologies include SSB and PRACH, both of which use equal-power beamforming and reception. The expected receiving power of PRACH is set the same in each beam direction. For remote UEs, there is a risk of insufficient coverage or different interference, which may affect the accurate reception of PARCH signals.

[0055] In step S120, the expected shaping gain graph of each broadcast beam direction is determined based on the broadcast beam information, and the target template is selected from the shaping templates supported by the base station antenna as the adjusted target beam based on the expected shaping gain graph, and the expected receiving power in the beam direction is updated to establish a communication connection with the terminal device with the expected receiving power.

[0056] The above-mentioned selection of the target template as the adjusted target beam from the shaping templates supported by the base station antenna based on the expected shaping gain graph can be understood as adjusting the beam shaping of the base station antenna based on the expected shaping gain graph; the above-mentioned updating of the expected received power in the beam direction and establishing a communication connection with the terminal device based on the expected received power can be understood as updating the expected received power in the beam direction and notifying the terminal device to establish a communication connection with the base station based on the expected received power.

[0057] In related technologies, both SSB and PRACH utilize equal-power beamforming and reception. The expected PRACH receive power is set the same across all beam directions, resulting in insufficient coverage or varying interference for remote UEs, thus affecting accurate PRACH signal reception. The disclosed embodiments utilize differentiated beamforming technology for the PRACH channel. By directing beamforming to users with weak signals at the edge, this improves beam reception gain and enhances uplink PRACH signal access performance.

[0058] In an embodiment of the present disclosure, the above-mentioned differentiated beamforming can be implemented based on the above-mentioned expected beamforming gain diagram. Exemplarily, the expected beamforming gain diagram can be shown in Figure 3. Compared with the equal-power beamforming in Figure 2 above, the embodiment of the present disclosure, under the premise that the antenna shaping conditions permit, enhances the PRACH beam gain in the direction where the far-end weak signal resides to improve the received signal strength in the beam direction, such as beam 3 / 6 in Figure 3; and reduces the PRACH beam gain in the area where near-end users gather or in the direction where no users reside, such as beam 1 / 4 / 8 in Figure 3.

[0059] The above-mentioned expected shaping gain diagram can be determined based on the above-mentioned broadcast beam information, that is, the SSB beam selected by the terminal device. Exemplarily, the above-mentioned determination of the expected shaping gain diagram of each broadcast beam direction based on the broadcast beam information can be implemented as follows: determining the location information of the terminal device based on the above-mentioned arrival angle and time delay, the location information including the distance between the terminal device and the base station and the broadcast channel beam corresponding to the received signal; determining the user distribution in each broadcast beam direction based on the location information, and determining the expected shaping gain diagram based on the user distribution. In some embodiments, the user distribution may be the farthest user distribution.

[0060] In an embodiment of the present disclosure, after obtaining the above-mentioned expected shaping gain graph, a target template is selected from the shaping templates supported by the base station antenna according to the expected shaping gain graph as the adjusted target beam, and the expected received power in the beam direction is updated to establish a communication connection with the terminal device with the expected received power.

[0061] The above process is described in detail in a specific embodiment below. The specific implementation process can be as follows:

[0062] S1: If the base station fails to demodulate the MSG1 message or the MSG1 signal is weaker than a preset threshold, which is the expected PRACH received power in the corresponding SSB beam direction, the PRACH beam and expected received power adjustment is triggered. Specifically, the PRACH received information records of each SSB beam direction can be used to calculate the farthest user distribution P in each SSB beam direction = {P i,max , i = 1 ~ N}, where N is the total number of SSB beams, and the expected beamforming gain diagram of each beam direction of the PRACH channel is obtained, as shown in Figure 3 above.

[0063] S2: Use all shaping templates supported by the base station antenna to match the expected shaping gain diagram of the PRACH channel, select the beam with the most similar beam shape as the adjustment target beam, and output it; synchronously update the PRACH expected received power in each beam direction in the SIB2 message.

[0064] S3: The terminal device completes L1 / L2 layer signal synchronization by receiving the MSG2 message;

[0065] S4: Continue to complete the random access MSG1-MSG4 messages and complete the RRC connection establishment application.

[0066] In an embodiment of the present disclosure, if the base station can receive the MSG1 message but the signal is weak, the process of establishing the above-mentioned communication connection can also be implemented as follows: determining the location information of the terminal device based on the arrival angle and delay, the above-mentioned location information includes the distance between the terminal device and the base station and the broadcast channel beam corresponding to the received signal; determining the wireless noise floor in the beam direction of the broadcast channel beam corresponding to the received signal based on the signal-to-noise ratio, and updating the expected receiving power in the beam direction based on the wireless noise floor, and establishing a communication connection with the terminal device with the expected receiving power.

[0067] Exemplarily, in the above-mentioned specific embodiment, the process can be implemented as follows: calculate and record the location of the UE based on the AOA and TA, where is the distance from the UE to the base station and is the SSB beam corresponding to the received signal; calculate the wireless noise floor in the direction of the beam based on the signal-to-noise ratio SINR, and adjust the expected PRACH receiving power in the direction of the beam; continue to complete the random access MSG1-MSG4 messages based on the expected receiving power, and complete the radio resource control (RRC) connection establishment application.

[0068] In step S130, during the service communication process with the terminal device, the beam gain difference between the dedicated channel beam and the broadcast beam and the crowd tidal difference value of the terminal device are determined, and beamforming is implemented based on the beam gain difference and the crowd tidal difference value.

[0069] After the communication connection between the base station and the terminal device is established in step S120, the above-mentioned service communication can be performed between the terminal device and the base station. For example, the service communication can be a communication service such as a call or accessing a network.

[0070] In the embodiment of the present disclosure, the above-mentioned dedicated channel is a channel used for business communications between the terminal device and the base station. Exemplarily, the dedicated channel can be a physical downlink control channel (Physical Downlink Control Channel, PDCCH), a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), a physical uplink shared channel (Physical Uplink Shared CHannel, PUSCH) and other dedicated channels.

[0071] In related technologies, dedicated channels such as PDCCH / PDSCH / PUSCH can track UEs through beamforming of multiple antenna arrays, and directly target the user's location through narrowband beams, maximizing the concentration of deployment energy and improving uplink and downlink coverage capabilities and signal quality. However, since the broadcast channel (BCCH) / common channel (CCCH) is aimed at all UEs, it is generally not suitable to deliberately enhance or weaken in a specific direction. Therefore, SSB generally uses fixed-gain beamforming or no beamforming. In the idle state, UEs use broadcast / common channels, while in the active state, they use dedicated channels. This causes the idle state coverage range of the cell to be inconsistent with the active state coverage range. As shown in Figure 4, in the area where the coverage of the two is different, there will be an "idle state blind spot" that users cannot access.

[0072] In order to solve the problem of the above-mentioned idle state blind spot, the embodiment of the present disclosure, based on the existing SSB fixed beam forming, allocates the power of this part of the beam direction to the beam where users are concentrated and there is weak coverage, while ensuring coverage of as many users as possible, thereby realizing differentiated power shaping of SSB, achieving adaptive coordination of public channels and dedicated channels, effectively reducing the "idle state blind spot", and improving the downlink coverage capability of the cell.

[0073] Exemplarily, the above process of determining the beam gain difference between the dedicated channel beam and the broadcast beam and realizing beam forming based on the beam gain difference can be implemented as follows: calculating the beam gain difference between the dedicated channel beam and each broadcast beam, and redistributing the power configuration of each beam direction of the broadcast beam based on the beam gain difference.

[0074] Specifically, the above-mentioned reallocation of the power configuration of each beam direction of the broadcast beam based on the beam gain difference can be implemented as follows: based on the beam gain difference in each beam direction of the broadcast beam, determining the maximum beam gain difference in each beam direction; calculating the average value of the maximum beam gain difference in each beam direction, and reallocating the power configuration of each beam direction of the broadcast beam based on the average value of the maximum beam gain difference.

[0075] Among them, the above-mentioned redistribution of the power configuration of each beam direction of the broadcast beam based on the average value of the maximum beam gain difference can be achieved as follows: calculate the ratio of the total cell power upper limit of the broadcast beam to the total number of beams of the broadcast beam; if the average value of the maximum beam gain difference is less than or equal to the ratio, then superimpose the corresponding maximum beam gain difference on the current beam gain configuration of each broadcast beam; otherwise: if the maximum beam gain difference is less than 0, then superimpose the corresponding maximum beam gain difference on the current beam gain configuration of each broadcast beam; if the maximum beam gain difference is greater than 0, superimpose the product of the corresponding maximum beam gain difference and the beam gain adjustment coefficient on the current beam gain configuration of each broadcast beam, wherein the beam gain adjustment coefficient must meet the preset conditions.

[0076] In the following, in a specific embodiment, the process of shaping the SSB beam differential power according to the beam gain difference is described in detail:

[0077] S1: When a dedicated channel including PDSCH / PDCCH / PUSCH is shaped for a terminal device, the base station calculates the SSB beam with the smallest angle with the beam direction. i , and the gain difference ΔG between the dedicated channel beam and the SSB beam i The above beam gain includes the sum of the power difference and the antenna gain after shaping, as shown in Figure 5. When the dedicated channel beam gain is lower than the SSB beam, ΔG i is a negative value; otherwise, ΔG i Is a positive value.

[0078] S2: The base station calculates the maximum difference ΔG in each direction based on the dedicated channel beam gain difference in each SSB beam direction i,max =max{ΔG i , i = 1 to N}, where N is the total number of SSB beams.

[0079] S3: The maximum difference ΔG of each SSB beam direction i,max , redistribute the power configuration of each beam direction:

[0080] First, calculate the average value of the maximum gain difference of each beam

[0081] like Among them, P SSB is the upper limit of the total SSB power of the cell, then the SSB beam gain

[0082] Profit adjustment: G i '=G i +ΔG i Among them, G i is the beam gain configuration before adjustment.

[0083] like Then the gain of each SSB beam is adjusted to:

[0084] Among them, G i is the beam gain configuration before adjustment, K i is the beam gain adjustment coefficient.

[0085] To ensure that the upper limit of each SSB beam power after adjustment does not exceed P SSB , then the beam gain adjustment coefficient K i Must meet:

[0086] (1)K i ≤1;

[0087] (2) The above adjustment is performed at a certain period, and the adjusted SSB beam power is sent through the SIB1 message.

[0088] In addition, in the related art, after the base station is built and connected to the network, the antenna is fixed in the direction of dense population to complete coverage in the specified direction. For dense building scenarios, it is necessary to increase indoor substations or outdoor low-frequency band sites to strengthen deep coverage and meet the network signal needs of indoor users. For scenarios such as dormitory buildings-classrooms in colleges and universities, workshops-dormitories in industrial parks, and residents-commercial office buildings, the personnel flow shows a migration pattern in a specific time period, which is usually referred to as the "tidal" phenomenon of personnel flow. The two areas involved in the "tidal" scenario, such as dormitory buildings and classrooms, workshops and dormitories, residential areas and office buildings, all have deep coverage requirements. In the embodiment of the present disclosure, the above-mentioned crowd tidal difference value is used to describe the above-mentioned "tidal" phenomenon of personnel flow.

[0089] In the related art, deep coverage of the two areas is achieved by adding sites in the two areas involved in the "tidal" scenario. However, due to the "tidal" movement of people, there are staggered idle periods in the two areas.

[0090] In order to make full use of resources, the embodiment of the present disclosure uses the terminal device shaping and pointing of the beam, evaluates and predicts the regularity of user group movement from the time dimension, and instructs the antenna shaping and pointing to dynamically adjust with the tidal movement of people, thereby realizing dynamic adjustment of cell coverage within a limited range, solving the requirement of deep coverage in tidal places, reducing the site planning investment for deep coverage, and improving the efficiency of wireless resource utilization.

[0091] Since the massive antenna technology (Massive Multiple Input Multiple Output, Massive-MIMO) of the NR system can provide antenna lobes of multiple patterns (Pattern) and can flexibly change the beam direction and width, as shown in Figure 6, the embodiment of the present disclosure can grasp the distribution of UE terminals in the area covered by the base station through the base station. Furthermore, in a relatively large time dimension, the base station can grasp the overall distribution position changes and even activity trajectories of the UE. By dynamically adjusting the antenna lobe direction as the crowd "tides" flow, it is possible for one base station to simultaneously complete deep coverage of two areas in the "tidal" scene.

[0092] Exemplarily, the above-mentioned process of determining the crowd tidal difference value of the terminal device and realizing beamforming based on the beam gain difference and the crowd tidal difference value can be implemented as follows: obtaining the measurement data of the terminal device, rasterizing the measurement data, and identifying the crowd tidal difference value through a clustering algorithm, and adjusting the output lobe according to the crowd tidal difference value.

[0093] Specifically, the above process may include the following steps: collecting measurement data of terminal devices, and rasterizing the measurement data according to geographic location, wherein each geographic grid corresponds to a grid number; counting the number of sampling points in each geographic grid, and clustering the geographic grids with a number of sampling points greater than a preset threshold into continuous grids to obtain the clustering area of ​​the covered terminal devices; according to the grid numbers of the geographic grids contained in this clustering area, identifying the difference between the geographic grids contained in this clustering area and the previous clustering grid as the crowd tidal difference value; when the crowd tidal difference value exceeds the preset threshold, selecting an antenna waveform that adapts to the clustering grid outline and adjusting the output lobe, wherein the above clustering grid outline is a polygon composed of the outer boundaries of the clustering grids.

[0094] In the following, in a specific embodiment, the process of SSB beamforming based on the crowd tidal difference value is described in detail:

[0095] S1: Gridding of measurement data: The base station collects user measurement data and processes the measurement data in a geographic grid. Each geographic grid is assigned a grid number.

[0096] S2: Customer group clustering: Based on the gridded data, the number of sampling points in each grid is counted. Grids with more than a certain number of sampling points are clustered together to obtain the user clusters covered by the base station.

[0097] S3: Tidal grid change identification: Based on the grids and grid numbers included in the clustered grid, the changes compared to the grids included in the previous cluster area are determined. When the difference between the two grids exceeds a certain threshold, the user cluster area is considered to have changed.

[0098] S4: If the cluster grid difference exceeds the threshold (user cluster area is generated), jump to S5; otherwise, jump to S6.

[0099] S5: Tidal grid cluster outline output: As shown in Figure 7, the polygon formed by the outer boundary of the cluster grid serves as the outer outline of the "tidal" grid. The base station output antenna waveform adapts to the cluster grid outline and adjusts the output lobe.

[0100] S6: Enter the next cycle of data collection to identify changes in the "tide", thereby achieving dynamic adjustment of the base station beam to "follow the industry".

[0101] It should be noted that although the steps of the method of the present disclosure are described in a specific order in the drawings, this does not require or imply that the steps must be performed in this specific order, or that all steps must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps.

[0102] Correspondingly, in this example embodiment, a base station coverage enhancement device is further provided. Referring to FIG8 , the base station coverage enhancement device 800 may include a request receiving module 810, an uplink access enhancement module 820, and a beamforming module 830, wherein:

[0103] The request receiving module 810 may be configured to receive a random access request message from a terminal device and measure broadcast beam information of a corresponding random broadcast channel;

[0104] The uplink access enhancement module 820 may be configured to determine an expected beamforming gain pattern for each broadcast beam direction based on the broadcast beam information, select a target template from the beamforming templates supported by the base station antenna based on the expected beamforming gain pattern as an adjusted target beam, and update the expected received power in the beam direction to establish a communication connection with the terminal device at the expected received power.

[0105] The beamforming module 830 can be used to determine the beam gain difference between the dedicated channel beam and the broadcast beam and the crowd tidal difference value of the terminal device during business communication with the terminal device, and implement beamforming based on the beam gain difference and the crowd tidal difference value.

[0106] The broadcast beam information of the above-mentioned random broadcast channel can be understood as random access channel beam information.

[0107] The above-mentioned selection of the target template as the adjusted target beam from the shaping templates supported by the base station antenna based on the expected shaping gain graph can be understood as adjusting the beam shaping of the base station antenna based on the expected shaping gain graph; the above-mentioned updating of the expected received power in the beam direction and establishing a communication connection with the terminal device based on the expected received power can be understood as updating the expected received power in the beam direction and notifying the terminal device to establish a communication connection with the base station based on the expected received power.

[0108] The specific implementation details of the above-mentioned base station coverage enhancement device have been described in detail in the corresponding position of the base station coverage enhancement method, so they will not be repeated here.

[0109] In addition, illustratively, based on the above-mentioned base station coverage enhancement method, the embodiment of the present disclosure also proposes a hardware implementation device for dynamic beam forming. As shown in Figure 9, the device consists of a field programmable gate array (FPGA) hardware control part and a central processing unit (CPU) data analysis part. Among them, the CPU data analysis part analyzes the received uplink access data and downlink shaping data, and instructs the FPGA hardware control part to point to beam adjustment with the calculation results; the FPGA hardware control part implements the control of uplink and downlink beam enhancement and beam forming instructions. The specific implementation process is as follows:

[0110] During CPU data analysis, the access channel power allocation module determines the UE's orientation and differentiated shaping and power adjustment of the access beam based on the PRACH access level and channel incidence angle of MSG1, instructing the access control and uplink enhancement modules in the FPGA hardware control section to change the uplink access channel beam allocation. The SSB beam power allocation module shapes the UE based on dedicated channels including PDSCH / PDCCH / PUSCH, determines SSB beam adjustments, and instructs the service channel shaping and downlink enhancement modules in the FPGA hardware control section to change the SSB beam allocation.

[0111] During CPU data analysis, the user tracking, positioning, and clustering module instructs the beamforming generation module in the FPGA hardware control module to adjust the beam based on the location distribution and changes of uplink and downlink UEs, thereby achieving "tidal" crowd dynamic tracking of the base station's overall beam.

[0112] In the FPGA hardware control, the access control and uplink enhancement module adjusts the broadcast transmission of the PRACH channel configuration in the SIB2 message based on the uplink beamforming adjustment instruction, and instructs the Remote Radio Unit (RRU) to adjust the access channel antenna beamforming and power. The service channel beamforming and downlink enhancement module adjusts the SSB beam configuration in SIB1 based on the downlink beamforming adjustment instruction, and instructs the RRU to adjust the SSB beam power. The beamforming generation module sends the antenna beamforming and power adjustment instructions from the access control and uplink enhancement module and the service channel beamforming and downlink enhancement module to the RRU for execution.

[0113] It should be noted that although several modules or units of the device for action execution are mentioned in the detailed description above, this division is not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of two or more modules or units described above can be concretized in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided into multiple modules or units to be concretized.

[0114] Figure 10 is a schematic diagram of the structure of an electronic device according to an embodiment of the present disclosure. With specific reference below to Figure 10, a schematic diagram of the structure of an electronic device 1000 suitable for implementing an embodiment of the present disclosure is shown. The electronic device shown in Figure 10 is merely an example and should not limit the functionality or scope of use of the embodiments of the present disclosure.

[0115] As shown in Figure 10, the electronic device 1000 may include a processing device (e.g., a central processing unit, a graphics processing unit, etc.) 1001, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage device 1008 into a random access memory (RAM) 1003 to implement the base station coverage enhancement method of the embodiment described in the present disclosure. In RAM 1003, various programs and data required for the operation of the electronic device 1000 are also stored. The processing device 1001, ROM 1002, and RAM 1003 are connected to each other via a bus 1004. An input / output (I / O) interface 1005 is also connected to the bus 1004.

[0116] Typically, the following devices may be connected to the I / O interface 1005: an input device 1006 including, for example, a touch screen, a touchpad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; an output device 1007 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 1008 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 may allow the electronic device 1000 to communicate with other devices wirelessly or by wire to exchange data. Although FIG. 10 shows an electronic device 1000 having various devices, it should be understood that it is not required to implement or have all of the devices shown. More or fewer devices may be implemented or have alternatively.

[0117] In particular, according to an embodiment of the present disclosure, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present disclosure includes a computer program product, which includes a computer program carried on a non-transitory computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart, thereby implementing the base station coverage enhancement method as described above. In such an embodiment, the computer program can be downloaded and installed from the network through the communication device 1009, or installed from the storage device 1008, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment of the present disclosure are performed.

[0118] It should be noted that the computer-readable medium mentioned above in the present disclosure may be a computer-readable signal medium or a computer-readable storage medium or any combination of the two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or component, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM) or flash memory, an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or device. In the present disclosure, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium may be transmitted using any suitable medium, including but not limited to wires, optical cables, radio frequency (RF), etc., or any suitable combination thereof.

[0119] In some embodiments, the client and server can communicate using any currently known or future developed network protocol, such as the HyperText Transfer Protocol (HTTP), and can be interconnected with any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include local area networks (LANs), wide area networks (WANs), internets (e.g., the Internet), and peer-to-peer networks (e.g., ad hoc peer-to-peer networks), as well as any currently known or future developed networks.

[0120] The computer-readable medium may be included in the electronic device, or may exist independently without being incorporated into the electronic device.

[0121] The computer-readable medium carries one or more programs. When the one or more programs are executed by the electronic device, the electronic device:

[0122] Receive a random access request message from a terminal device and measure the broadcast beam information of the corresponding random broadcast channel;

[0123] Determine the expected beamforming gain graph for each broadcast beam direction based on the broadcast beam information, select a target template from the beamforming templates supported by the base station antenna based on the expected beamforming gain graph as the target beam to be adjusted, and update the expected received power in the beam direction to establish a communication connection with the terminal device at the expected received power;

[0124] During business communication with the terminal device, the beam gain difference between the dedicated channel beam and the broadcast beam and the crowd tidal difference of the terminal device are determined, and beamforming is implemented based on the beam gain difference and the crowd tidal difference.

[0125] The broadcast beam information of the above-mentioned random broadcast channel can be understood as random access channel beam information.

[0126] The above-mentioned selection of the target template as the adjusted target beam from the shaping templates supported by the base station antenna based on the expected shaping gain graph can be understood as adjusting the beam shaping of the base station antenna based on the expected shaping gain graph; the above-mentioned updating of the expected received power in the beam direction and establishing a communication connection with the terminal device based on the expected received power can be understood as updating the expected received power in the beam direction and notifying the terminal device to establish a communication connection with the base station based on the expected received power.

[0127] Optionally, when the above one or more programs are executed by the electronic device, the electronic device may also execute other steps described in the above embodiments.

[0128] Computer program code for performing the operations of the present disclosure may be written in one or more programming languages, or a combination thereof, including, but not limited to, object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on the remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0129] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, program segment, or a part of code, and the module, program segment, or a part of code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of the boxes in the block diagram and / or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0130] The units involved in the embodiments described in this disclosure may be implemented in software or hardware, wherein the name of a unit does not necessarily limit the unit itself.

[0131] The functions described above herein may be performed, at least in part, by one or more hardware logic components. For example, and without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard parts (ASSPs), system on chip (SOCs), complex programmable logic devices (CPLDs), and the like.

[0132] In the context of the present disclosure, a machine-readable medium can be a tangible medium that can contain or store a program for use by or in conjunction with an instruction execution system, device or equipment. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium can include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0133] The above description is merely a preferred embodiment of the present disclosure and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of disclosure involved in the present disclosure is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also includes other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the above-mentioned disclosed concepts. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this disclosure.

[0134] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details have been included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0135] Although the subject matter has been described in language specific to structural features and / or methodological logical acts, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are merely example forms of implementing the claims.

Claims

1. A base station coverage enhancement method, include: Receive a random access request message from a terminal device and measure broadcast beam information of a corresponding random broadcast channel; Determine an expected shaping gain graph of the beam direction of each broadcast beam according to the broadcast beam information, select a target template from the shaping templates supported by the base station antenna as the adjusted target beam according to the expected shaping gain graph, and update the expected receiving power in the beam direction, and establish a communication connection with the terminal device with the expected receiving power; During the service communication with the terminal device, the beam gain difference and the crowd tidal difference between the dedicated channel beam and the broadcast beam are determined, and beamforming is implemented based on the beam gain difference and the crowd tidal difference.

2. The base station coverage enhancement method according to claim 1, in, The broadcast beam information includes a signal-to-noise ratio, an angle of arrival, and a delay; after measuring the broadcast beam information of the corresponding random broadcast channel, the method further includes: Determine the location information of the terminal device according to the arrival angle and the time delay, the location information including the distance from the terminal device to a base station and a random channel beam corresponding to a received signal; Determine the wireless background noise in the beam direction of the random channel beam corresponding to the received signal according to the signal-to-noise ratio, update the expected received power in the beam direction based on the wireless background noise, and establish a communication connection with the terminal device with the expected received power.

3. The base station coverage enhancement method according to claim 2, in, The determining, according to the broadcast beam information, an expected shaped gain graph of each beam direction of the random broadcast channel comprises: Determine the location information of the terminal device according to the arrival angle and the time delay, the location information including the distance from the terminal device to a base station and a random channel beam corresponding to a received signal; The farthest user distribution in each of the broadcast beam directions is determined according to the position information, and the expected shaped gain diagram is determined based on the farthest user distribution.

4. The base station coverage enhancement method according to claim 1, in, The determining of the beam gain difference between the dedicated channel beam and the broadcast beam and the crowd tidal difference value, and implementing beamforming according to the beam gain difference and the crowd tidal difference value, includes: Calculating the beam gain difference between the dedicated channel beam and each of the broadcast beams, and reallocating the power configuration of each beam direction of the broadcast beam according to the beam gain difference; The measurement data of the terminal device is obtained, the measurement data is rasterized, and the crowd tidal difference value is identified through a clustering algorithm, and the output lobe is adjusted according to the crowd tidal difference value.

5. The base station coverage enhancement method according to claim 4, in, The power configuration of each beam direction is reallocated according to the beam gain difference, comprising: Determining a maximum beam gain difference in each beam direction according to the beam gain differences in each beam direction of the broadcast beam; An average value of the maximum beam gain difference in each beam direction is calculated, and the power configuration of each beam direction of the broadcast beam is reallocated according to the average value of the maximum beam gain difference.

6. The base station coverage enhancement method according to claim 5, in, The power configuration of each beam direction of the broadcast beam reallocated according to the average value of the maximum beam gain difference includes: Calculating a ratio of a total cell power upper limit of the broadcast beam to a total number of beams of the broadcast beam; If the average value of the maximum beam gain difference is less than or equal to the ratio, superimposing the corresponding maximum beam gain difference on the current beam gain configuration of each broadcast beam; Otherwise: if the maximum beam gain difference is less than 0, the corresponding maximum beam gain difference is superimposed on the current beam gain configuration of each broadcast beam; if the maximum beam gain difference is greater than 0, the corresponding product of the maximum beam gain difference and the beam gain adjustment coefficient is superimposed on the current beam gain configuration of each broadcast beam, wherein the beam gain adjustment coefficient must meet the preset conditions.

7. The base station coverage enhancement method according to claim 4, in, The obtaining of the measurement data of the terminal device, performing rasterization processing on the measurement data, identifying the crowd tidal difference value by a clustering algorithm, and adjusting the output lobe according to the crowd tidal difference value, includes: Collecting the measurement data of the terminal device, and performing raster processing on the measurement data according to the geographical location, wherein each geographical grid corresponds to a grid number; Counting the number of sampling points in each of the geographic grids, and clustering the geographic grids whose number of sampling points is greater than a preset threshold into connected grids to obtain a clustered area of ​​the covered terminal devices; According to the grid number of the geographic grid contained in the current gathering area, identify the current The difference between the geographic grid contained in the clustering area and the previous clustering grid is used as the crowd tide difference value; When the crowd tidal difference value exceeds a preset threshold, an antenna waveform adapted to a clustering grid outline is selected and the output lobe is adjusted, wherein the clustering grid outline is a polygon formed by the outer boundaries of the clustering grids.

8. A base station coverage enhancement device, include: A request receiving module, used to receive a random access request message from a terminal device and measure the broadcast beam information of the corresponding random broadcast channel; An uplink access enhancement module is used to determine the expected shaping gain diagram of each broadcast beam direction according to the broadcast beam information, select a target template from the shaping templates supported by the base station antenna as the adjusted target beam according to the expected shaping gain diagram, and update the expected receiving power in the beam direction, and establish a communication connection with the terminal device with the expected receiving power; The beamforming module is used to determine the beam gain difference and the crowd tidal difference between the dedicated channel beam and the broadcast beam during the service communication with the terminal device, and implement beamforming according to the beam gain difference and the crowd tidal difference.

9. A computer-readable storage medium having a computer program stored thereon, in, When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

10. An electronic device, include: processor; A memory, configured to store executable instructions of the processor; The processor is configured to perform the method of any one of claims 1 to 7 by executing the executable instructions.

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