Railway traffic based network coverage enhancement method, device and computer equipment

Abstract

The application relates to a railway traffic-based network coverage enhancement method and device, computer equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: obtaining a target base station according to a driving direction and real-time positioning; receiving a first wireless communication signal sent by the target base station through an intelligent metasurface module; adjusting the reflection angle of the first wireless communication signal in real time based on the intelligent metasurface module according to a real-time driving speed, and reflecting the first wireless communication signal into the signal receiving range of the train; receiving a second wireless communication signal sent by a train user terminal through the intelligent metasurface module; adjusting the reflection angle of the second wireless communication signal in real time based on the intelligent metasurface module according to the real-time driving speed, and reflecting the second wireless communication signal to the target base station. The method can solve the problems of signal difference between the two sides of the carriage, instability and the like in the existing high-speed rail communication coverage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of user network enhancement, in particular to a network coverage enhancement method and device based on railway traffic, computer equipment, computer readable storage medium and computer program product. BACKGROUND

[0002] With the rapid development of high-speed rail, people have higher and higher requirements for communication quality in the process of high-speed rail operation. However, in the high-speed rail scene, due to the high-speed movement of high-speed trains, Doppler frequency offset is generated, the train body penetration loss is large, and 5G and other communication signals are prone to interruption, attenuation and other problems, which are the difficulties of mobile communication coverage.

[0003] In order to ensure the balanced coverage of seats on both sides of the high-speed train carriage, the communication base station generally adopts cross coverage on both sides of the track. However, in actual deployment, due to the limitation of power, optical transmission and other infrastructure, the base station is often difficult to have an ideal cross layout. From the actual high-speed rail test data, the communication signal strength of the user on the side of the carriage facing away from the base station is more than 5dB lower than that of the user on the side facing the base station under the current high-speed rail scene communication base station layout, which seriously affects the mobile communication experience of the user on the side facing away from the base station.

[0004] Therefore, there is an urgent need for a network coverage enhancement method and device based on railway traffic, computer equipment, computer readable storage medium and computer program product, which can solve the problems of signal difference and instability of users on both sides of the carriage in the existing high-speed rail communication coverage. SUMMARY

[0005] Therefore, there is an urgent need for a network coverage enhancement method and device based on railway traffic, computer equipment, computer readable storage medium and computer program product, which can solve the problems of signal difference and instability of users on both sides of the carriage in the existing high-speed rail communication coverage.

[0006] In a first aspect, the present application provides a network coverage enhancement method based on railway traffic, comprising:

[0007] In the process of train running, the real-time running speed, running direction and real-time positioning of the train are obtained;

[0008] According to the running direction and the real-time positioning, the target base station is matched and obtained;

[0009] The first wireless communication signal sent by the target base station is received through the intelligent metasurface module;

[0010] According to the real-time driving speed, the reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module, and the first wireless communication signal is reflected into the signal receiving range of the train; wherein the target base station and the intelligent metasurface module are located on both sides of the railway respectively.

[0011] Through the intelligent metasurface module, the second wireless communication signal sent by the train user terminal is received.

[0012] According to the real-time driving speed, the reflection angle of the second wireless communication signal is adjusted in real time based on the intelligent metasurface module, and the second wireless communication signal is reflected to the target base station.

[0013] In one of the embodiments, the target base station is obtained by matching according to the driving direction and the real-time positioning, comprising:

[0014] According to the real-time positioning, a base station set in the driving area of the train is preliminarily matched and obtained;

[0015] According to the driving direction, the target base station is further screened and matched from the base station set.

[0016] In one of the embodiments, the target base station includes a previous target base station and a next target base station closest to the train, and the previous target base station and the next target base station correspond to the same intelligent metasurface module; the first wireless communication signal includes an effective communication signal and an ineffective communication signal; the reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module, and the first wireless communication signal is reflected into the signal receiving range of the train, comprising:

[0017] According to the real-time driving speed, the reflection angle of the effective communication signal and the refraction angle of the ineffective communication signal are adjusted in real time based on the intelligent metasurface module, so as to reflect the effective communication signal into the signal receiving range of the train and refract the ineffective communication signal out of the signal receiving range of the train.

[0018] In one of the embodiments, the target base station includes a previous target base station and a next target base station closest to the train, and the previous target base station and the next target base station correspond to different intelligent metasurface modules; the reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module, and the first wireless communication signal is reflected into the signal receiving range of the train, comprising:

[0019] In a case where it is determined, based on the driving direction and the real-time positioning, that the train is approaching the previous target base station, the control module controls the intelligent metasurface module corresponding to the previous target base station to receive the first wireless communication signal sent by the previous target base station; and the control module controls the intelligent metasurface module to adjust, in real time, a reflection angle of the first wireless communication signal based on the intelligent metasurface module according to the real-time driving speed, and reflect the first wireless communication signal into a signal receiving range of the train.

[0020] In a case where it is determined, based on the driving direction and the real-time positioning, that the train is approaching the previous target base station, the control module controls the intelligent metasurface module corresponding to the previous target base station to receive the first wireless communication signal sent by the previous target base station; and the control module controls the intelligent metasurface module to adjust, in real time, a reflection angle of the first wireless communication signal based on the intelligent metasurface module according to the real-time driving speed, and reflect the first wireless communication signal into a signal receiving range of the train.

[0021] In one of the embodiments, the method further includes:

[0022] In a case where it is determined, based on the driving direction and the real-time positioning, that the train is approaching the previous target base station, the control module controls the intelligent metasurface module corresponding to the previous target base station to receive the first wireless communication signal sent by the previous target base station; and the control module controls the intelligent metasurface module to adjust, in real time, a reflection angle of the first wireless communication signal based on the intelligent metasurface module according to the real-time driving speed, and reflect the first wireless communication signal into a signal receiving range of the train.

[0023] In one of the embodiments, the installation position of the intelligent metasurface module is within a height difference range of 10-15 m from the rail, and the intelligent metasurface module is provided with a new energy self-power generation module.

[0024] In a second aspect, the application further provides a network coverage enhancement device based on railway traffic, including:

[0025] The data acquisition module is configured to acquire a real-time driving speed, a driving direction and a real-time positioning of the train during train driving.

[0026] The base station matching module is configured to match a target base station according to the driving direction and the real-time positioning.

[0027] The control module is configured to receive, by the intelligent metasurface module, a first wireless communication signal sent by the target base station.

[0028] The control module is further configured to adjust, in real time, a reflection angle of the first wireless communication signal based on the intelligent metasurface module according to the real-time driving speed, and reflect the first wireless communication signal into a signal receiving range of the train; and the target base station and the intelligent metasurface module are respectively located on two sides of the railway.

[0029] The control module is further configured to receive, by the intelligent metasurface module, a second wireless communication signal sent by a user terminal of the train.

[0030] The control module is further configured to adjust a reflection angle of the second wireless communication signal based on the intelligent metasurface module according to the real-time running speed, and reflect the second wireless communication signal to the target base station.

[0031] In a third aspect, the present application further provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the following steps when executing the computer program:

[0032] During train running, a real-time running speed, a running direction and a real-time positioning of the train are obtained;

[0033] A target base station is matched according to the running direction and the real-time positioning;

[0034] The intelligent metasurface module receives a first wireless communication signal sent by the target base station;

[0035] The intelligent metasurface module adjusts a reflection angle of the first wireless communication signal based on the intelligent metasurface module according to the real-time running speed, and reflects the first wireless communication signal into a signal receiving range of the train; wherein the target base station and the intelligent metasurface module are respectively located on two sides of a railway.

[0036] The intelligent metasurface module receives a second wireless communication signal sent by a train user terminal;

[0037] The intelligent metasurface module adjusts a reflection angle of the second wireless communication signal based on the intelligent metasurface module according to the real-time running speed, and reflects the second wireless communication signal to the target base station.

[0038] In a fourth aspect, the present application further provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the following steps:

[0039] During train running, a real-time running speed, a running direction and a real-time positioning of the train are obtained;

[0040] A target base station is matched according to the running direction and the real-time positioning;

[0041] The intelligent metasurface module receives a first wireless communication signal sent by the target base station;

[0042] The intelligent metasurface module adjusts a reflection angle of the first wireless communication signal based on the intelligent metasurface module according to the real-time running speed, and reflects the first wireless communication signal into a signal receiving range of the train; wherein the target base station and the intelligent metasurface module are respectively located on two sides of a railway.

[0043] receive, by the intelligent metasurface module, a second wireless communication signal sent by a train user terminal;

[0044] adjust, based on the intelligent metasurface module, a reflection angle of the second wireless communication signal according to the real-time running speed, and reflect the second wireless communication signal to the target base station.

[0045] In a fifth aspect, the present application also provides a computer program product comprising a computer program which, when executed by a processor, implements the following steps:

[0046] acquire a real-time running speed, a running direction and a real-time positioning of the train during train running;

[0047] match a target base station according to the running direction and the real-time positioning;

[0048] receive, by the intelligent metasurface module, a first wireless communication signal sent by the target base station;

[0049] adjust, based on the intelligent metasurface module, a reflection angle of the first wireless communication signal according to the real-time running speed, and reflect the first wireless communication signal to a signal receiving range of the train; wherein the target base station and the intelligent metasurface module are located on two sides of the railway respectively;

[0050] receive, by the intelligent metasurface module, a second wireless communication signal sent by a train user terminal;

[0051] adjust, based on the intelligent metasurface module, a reflection angle of the second wireless communication signal according to the real-time running speed, and reflect the second wireless communication signal to the target base station.

[0052] The above network coverage enhancement method, device, computer equipment, computer readable storage medium and computer program product based on railway traffic, by acquiring a real-time running speed, a running direction and a positioning of the train, accurately matching a target base station, effectively solving the signal difference and instability problem in high-speed rail communication coverage. The intelligent metasurface module receives the base station signal and adjusts the reflection angle in real time according to the train speed, reflects the signal to the train receiving range, and at the same time receives the wireless communication signal of the user terminal to the target base station, realizing two-way communication optimization. This scheme can enhance the signal strength, balance the signal coverage on both sides of the car, adapt to the high-speed moving environment, and improve the communication stability. By placing the target base station and the intelligent metasurface module on both sides of the railway, effective coverage can be achieved through reflection, making up for the lack of infrastructure layout. In addition, dynamically adjusting the reflection angle can quickly respond to changes in train motion, reduce signal switching and adjustment time, and improve communication efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the drawings needed to be used in the description of the embodiments of the present application or the related art will be briefly introduced. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0054] Figure 1 An application environment diagram of a network coverage enhancement method based on railway traffic in an embodiment;

[0055] Figure 2 A flowchart of a network coverage enhancement method based on railway traffic in an embodiment;

[0056] Figure 3 A first signal interaction diagram between an intelligent metasurface module, a target base station and a train user terminal in an embodiment;

[0057] Figure 4 A flowchart of a network coverage enhancement method based on railway traffic in another embodiment;

[0058] Figure 5 A second signal interaction diagram between an intelligent metasurface module, a target base station and a train user terminal in an embodiment;

[0059] Figure 6 A structural block diagram of a network coverage enhancement device based on railway traffic in an embodiment;

[0060] Figure 7 An internal structure diagram of a computer device in an embodiment. DETAILED DESCRIPTION

[0061] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0062] The network coverage enhancement method based on railway traffic provided by the embodiments of the present application can be applied in the application environment as shown in Figure 1 The terminal 102 communicates with the server 104 through the network. The data storage system can store the data required to be processed by the server 104. The data storage system can be integrated on the server 104, or placed on the cloud or other network servers.

[0063] In the process of train running, the server 104 obtains the real-time running speed, running direction and real-time positioning of the train through the terminal 102; the server 104 matches the target base station according to the running direction and real-time positioning; through the intelligent metasurface module, the first wireless communication signal sent by the target base station is received; according to the real-time running speed, the reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module, and the first wireless communication signal is reflected into the signal receiving range of the train; wherein the target base station and the intelligent metasurface module are located on both sides of the railway; through the intelligent metasurface module, the second wireless communication signal sent by the train user terminal is received; according to the real-time running speed, the reflection angle of the second wireless communication signal is adjusted in real time based on the intelligent metasurface module, and the second wireless communication signal is reflected to the target base station.

[0064] The terminal 102 can be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, Internet of Things devices, and portable wearable devices. The Internet of Things device can be a smart speaker, a smart television, a smart air conditioner, a smart vehicle-mounted device, a projection device, etc. The portable wearable device can be a smart watch, a smart bracelet, a head-mounted device, etc. The head-mounted device can be a virtual reality (VR) device, an augmented reality (AR) device, smart glasses, etc. The server 104 can be a standalone physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services.

[0065] In an exemplary embodiment, as shown in Figure 2 , a railway traffic-based network coverage enhancement method is provided. The method is applied to the server 104 in Figure 1 , and includes the following steps S202 to S212. Among them:

[0066] Step S202, in the process of train running, the real-time running speed, running direction and real-time positioning of the train are obtained.

[0067] Specifically, the real-time running speed refers to the actual running speed of the train at a certain time, usually in units of kilometers per hour (km / h). The running speed of the train directly affects the Doppler shift of the signal and the change of the signal propagation path. When running at high speed, the frequency of the signal will shift, resulting in increased complexity of signal reception and transmission. Real-time acquisition of running speed can be used to dynamically adjust the frequency compensation and reflection angle of the signal to ensure the stability of communication.

[0068] The acquisition method includes:

[0069] Train Control System: Modern high-speed trains are usually equipped with advanced train control systems (such as Train Control Management System, TCMS), which can monitor the train's speed in real time and transmit the speed information to the communication system through the vehicle network (such as MVB bus).

[0070] GPS / Beidou Positioning System: Through satellite positioning systems (such as GPS or Beidou), the real-time speed of the train can be calculated. The positioning system provides the train's position information every certain time (such as 1 second), and the speed is calculated by the change of position.

[0071] Wheel Speed Sensor: Install wheel speed sensors on the train's wheel shafts to directly measure the rotation speed of the wheels and calculate the running speed of the train.

[0072] Travel Direction refers to the direction of the train at a certain moment, usually expressed in degrees or azimuth, such as the angle relative to the geographical north direction. The travel direction determines the direction and path of signal propagation. By understanding the travel direction of the train, the reflection angle of the signal can be optimized to ensure that the signal can accurately cover the inside of the train and reduce the signal blind area.

[0073] Acquisition methods include:

[0074] Inertial Navigation System (INS): Use inertial sensors (such as accelerometers and gyroscopes) to measure the motion state of the train and calculate the travel direction of the train.

[0075] Satellite Positioning System: Through the position information provided by the GPS or Beidou positioning system, combined with the time stamp, the motion direction of the train is calculated.

[0076] Electronic Compass: Install an electronic compass on the train to directly measure the angle of the train relative to the geographical north direction.

[0077] Real-time positioning refers to the accurate position of the train at a certain moment, usually expressed in latitude and longitude coordinates. Real-time positioning is used to determine the relative position between the train and the base station, so as to select the optimal base station for communication and dynamically adjust the propagation path of the signal. Accurate positioning information can reduce the number of signal switching, improve the continuity and stability of communication.

[0078] Acquisition methods include:

[0079] Satellite Positioning System: Through the GPS or Beidou satellite positioning system, the train can obtain its accurate latitude and longitude position information in real time.

[0080] Base Station Signal Strength Measurement: By measuring the signal strength received by the train from multiple base stations, the train's position is calculated using triangulation.

[0081] Track sensor: install a sensor on the track, determine the position of the train through the signal feedback when the train passes the sensor.

[0082] Step S204, according to the driving direction and real-time positioning, match the target base station.

[0083] Specifically, according to the real-time positioning of the train, the base stations within a certain range from the train are screened out. For example, the base stations within 10 kilometers from the train are selected as candidate base stations. Further screening out the base stations located within a certain angle range in front of the train driving direction. For example, select the base station with an angle less than 30 degrees to the train driving direction.

[0084] According to the distance between the train and the candidate base station, the terrain and obstacles, etc., the signal strength of each candidate base station is evaluated. For high-speed trains, the influence of Doppler shift on the signal needs to be considered, and the base station that can effectively compensate for the Doppler shift is selected. Considering factors such as distance, direction, signal strength, etc., score each candidate base station, and select the base station with the highest score as the target base station. During the train driving process, the target base station is updated in real time. When the train approaches the next base station, switch in advance to ensure the continuity of communication.

[0085] Step S206, receiving the first wireless communication signal sent by the target base station through the intelligent super surface module.

[0086] Among them, the intelligent super surface module (Reconfigurable Intelligent Surface, RIS) is a new electromagnetic surface structure that can integrate a large number of low-cost reflection or transmission elements on a plane. These elements can be intelligently controlled to flexibly control the polarization, amplitude, phase, polarization mode and propagation mode of electromagnetic waves, etc. In the high-speed rail scene, the intelligent super surface module is deployed on the side of the high-speed rail along the line without base station deployment, which is used to enhance the signal coverage of the users on the back side of the base station.

[0087] Step S208, according to the real-time driving speed, the reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent super surface module, and the first wireless communication signal is reflected to the signal receiving range of the train; wherein the target base station and the intelligent super surface module are located on both sides of the railway.

[0088] Specifically, the intelligent super surface module can adjust the reflection angle in real time according to the speed and position of the train. This dynamic control is realized through the control module, which will send instructions to the intelligent super surface module according to the speed and position information of the train. The intelligent super surface module dynamically changes the reflection direction of the signal by adjusting the phase and amplitude of its internal reflection elements. Including:

[0089] Phase adjustment: By changing the phase of the reflecting elements, the reflection angle of the signal can be changed. For example, by adjusting the phase difference, the signal can be formed into a beam in a specific direction.

[0090] Amplitude adjustment: By adjusting the amplitude of the reflecting elements, the intensity of the signal can be controlled to ensure sufficient strength inside the train.

[0091] The intelligent metasurface module reflects the received signal into the signal receiving range of the train, ensuring that the communication equipment inside the train can receive the signal. Specifically, through the reflection angle adjustment of the intelligent metasurface module, the wireless communication signal is concentrated and projected onto the path of the train, forming a beam. This beamforming technology can significantly enhance signal strength and reduce signal attenuation. At the same time, the intelligent metasurface module can dynamically adjust the coverage of the signal according to the position and speed of the train, ensuring that the signal can uniformly cover the inside of the train.

[0092] In addition, in the traditional base station layout, the signal strength on the side of the train facing away from the base station is weak. By deploying intelligent metasurface modules on the other side of the railway, the signal coverage on the side facing away from the base station can be enhanced, reducing signal differences. The intelligent metasurface module can reflect the base station signal into the train, enhancing the signal strength and improving the communication quality. The intelligent metasurface module can dynamically adjust the reflection angle of the signal according to the real-time speed and position of the train, adapting to the high-speed moving characteristics of the train, ensuring the continuity and stability of the signal coverage.

[0093] Step S210, through the intelligent metasurface module, receiving the second wireless communication signal sent by the train user terminal.

[0094] The intelligent metasurface module not only can receive and optimize the signal from the base station, but also can receive the uplink signal sent by the train user terminal (such as mobile phone, tablet, etc.).

[0095] Specifically, the intelligent metasurface module can capture the second wireless communication signal sent by the train user terminal through its integrated reflecting elements. The received second wireless communication signal will undergo internal processing of the intelligent metasurface module, including signal amplification, filtering, and modulation, etc., to ensure the quality and strength of the signal.

[0096] Step S212, according to the real-time running speed, adjusting the reflection angle of the second wireless communication signal based on the intelligent metasurface module in real time, and reflecting the second wireless communication signal to the target base station.

[0097] Specifically, the real-time running speed is a key parameter for adjusting the reflection angle. When the train moves at high speed, the propagation path and coverage of the signal need to be dynamically adjusted according to the speed to ensure that the signal can always accurately cover the inside of the train and be transmitted to the target base station.

[0098] The intelligent metasurface module is composed of a large number of programmable reflective elements that can independently adjust their phase and amplitude. According to the real-time speed and position of the train, the control module calculates the optimal reflection angle and sends instructions to the intelligent metasurface module. The reflective elements inside the module adjust their phase and amplitude according to these instructions, thereby changing the reflection direction of the signal. By adjusting the phase difference of the reflective elements, the intelligent metasurface module can concentrate the signal in a specific direction, forming a beam. This beamforming technology can significantly enhance signal strength, reduce signal attenuation and multipath interference.

[0099] The target base station is the one that is best suited for communication with the train after intelligent matching. The selection of the target base station is based on the real-time position and direction of travel of the train, ensuring the optimal path for signal transmission. The metasurface module reflects the received second wireless communication signal to the target base station according to the calculated reflection angle. This process needs to ensure that the signal is as little loss and interference as possible during transmission. Through the reflection and beamforming technology of the intelligent metasurface module, the strength and coverage of the signal are significantly enhanced, thereby improving the communication quality.

[0100] By dynamically adjusting the reflection angle, the intelligent metasurface module can reduce signal interruption and switching times, improving the stability of communication. The intelligent metasurface module can enhance signal strength, optimize signal coverage, and reduce signal attenuation and multipath interference. By optimizing signal coverage and communication stability, the intelligent metasurface module can significantly improve the communication experience of train users.

[0101] In the above network coverage enhancement method based on railway traffic, by obtaining the real-time driving speed, driving direction and positioning of the train, the target base station is accurately matched, effectively solving the signal difference and instability problem in high-speed rail communication coverage. The intelligent metasurface module receives the base station signal and adjusts the reflection angle in real time according to the train speed, reflects the signal to the train receiving range, and at the same time receives the wireless communication signal of the user terminal to the target base station, realizing two-way communication optimization. This scheme can enhance signal strength, balance signal coverage on both sides of the car, adapt to high-speed mobile environment, and improve communication stability. By placing the target base station and the intelligent metasurface module on both sides of the railway, effective coverage can be achieved through reflection, making up for the lack of infrastructure layout. In addition, dynamic adjustment of the reflection angle can quickly respond to changes in train motion, reduce signal switching and adjustment time, and improve communication efficiency.

[0102] In one exemplary embodiment, according to the driving direction and real-time positioning, the target base station is matched, including:

[0103] According to the real-time positioning, a set of base stations in the driving area where the train is located is preliminarily matched;

[0104] According to the driving direction, further filtering is performed from the base station set, and the target base station is obtained again by matching.

[0105] Specifically, according to the real-time positioning of the train, the system filters the base station set in the driving area where the train is located, which is usually achieved by calculating the distance between the train and each base station. The base stations within a certain range (for example, within 10 kilometers) from the train are selected as candidate base stations. In actual application, the base stations along the high-speed rail are usually divided according to geographical areas, and each base station covers a certain area. Through real-time positioning, the current area where the train is located can be quickly determined, so as to preliminarily filter the base station set in the area.

[0106] From the preliminarily matched base station set, further filtering is performed to select the base stations within a certain angle range in front of the driving direction of the train. For example, the base stations with an included angle less than 30 degrees with the driving direction of the train are selected. In this way, it can be ensured that the base station signal can better cover the driving path of the train, reducing the signal blind area. During the high-speed movement of the train, the driving direction may change (for example, the train enters a curve or changes lanes). Therefore, the system needs to dynamically adjust the selection of the target base station according to the real-time driving direction of the train to ensure the continuity and stability of the communication.

[0107] In this embodiment, by combining real-time positioning and driving direction, the system can more accurately select the target base station that is most suitable for communication with the train. Real-time positioning ensures that the distance between the base station and the train is the shortest, and the driving direction ensures the optimization of the signal propagation path. During the driving of the train, the real-time positioning and driving direction of the train are continuously updated, and the selection of the target base station is dynamically adjusted according to these information. When the train approaches the next base station, the system will switch in advance to ensure the continuity of the communication.

[0108] In one exemplary embodiment, the target base station includes a previous target base station and a next target base station closest to the train, the previous target base station and the next target base station correspond to the same intelligent metasurface module; the first wireless communication signal includes an effective communication signal and an ineffective communication signal; the reflection angle of the effective communication signal and the refraction angle of the ineffective communication signal are adjusted in real time based on the intelligent metasurface module, and the first wireless communication signal is reflected into the signal receiving range of the train, comprising:

[0109] According to the real-time driving speed, the reflection angle of the effective communication signal and the refraction angle of the ineffective communication signal are adjusted in real time based on the intelligent metasurface module, so as to reflect the effective communication signal into the signal receiving range of the train and refract the ineffective communication signal out of the signal receiving range of the train.

[0110] Specifically, as Figure 3As shown, the former target base station (base station A) refers to the base station in front of the train, which the train is about to enter its coverage. The latter target base station (target base station B) refers to the base station behind the train, which the train has just left its coverage. The former target base station and the latter target base station correspond to the same intelligent metasurface module, which means that the intelligent metasurface module can process wireless communication signals from both base stations.

[0111] Among them, the classification of the first wireless communication signal includes valid communication signal and invalid communication signal; the valid communication signal refers to the signal from the former target base station, which is useful for the current communication of the train. The invalid communication signal refers to the signal from the latter target base station or other interference signal, which is useless for the current communication of the train.

[0112] The intelligent metasurface module dynamically adjusts the reflection angle of the valid communication signal according to the real-time driving speed of the train, to ensure that these signals can be accurately reflected into the signal receiving range of the train. This process is realized through beamforming technology, to maximize signal strength and reduce signal attenuation and multipath interference.

[0113] The intelligent metasurface module also dynamically adjusts the refraction angle of the invalid communication signal according to the real-time driving speed of the train, to ensure that these signals are reflected outside the signal receiving range of the train. This process adjusts the reflection angle to avoid interference of invalid signals on train communication.

[0114] As shown, Figure 3 The train is moving from the coverage of the former target base station (base station A) to the coverage of the latter target base station (base station B). The intelligent metasurface module is deployed on the other side of the railway, which can receive signals from the former target base station and the latter target base station.

[0115] The intelligent metasurface module receives valid communication signals (such as A1) from the former target base station, and adjusts the reflection angle according to the real-time driving speed of the train to reflect the signals (such as A2) into the signal receiving range of the train. For example, assuming that the train is driving at a speed of 300 km / h, the intelligent metasurface module will dynamically adjust the reflection angle according to this speed to ensure that the signal can accurately cover the inside of the train. At the same time, the refraction angle of the invalid communication signal (such as A3) is adjusted according to the real-time driving speed of the train to reflect the signal outside the signal receiving range of the train to avoid interference. For example, the intelligent metasurface module will reflect the invalid signal away from the train to reduce the impact on train communication.

[0116] In this embodiment, by dynamically adjusting the reflection angle, the intelligent metasurface module can reduce signal interruption and switching times, and improve the stability of communication. The intelligent metasurface module can enhance the strength of the effective communication signal, optimize the signal coverage range, and reduce signal attenuation and multipath interference. By reflecting the invalid communication signal outside the signal receiving range of the train, the intelligent metasurface module reduces the interference of the invalid signal on the train communication, and improves the communication quality.

[0117] In one exemplary embodiment, the target base station includes a previous target base station and a next target base station closest to the train, and the previous target base station and the next target base station correspond to different intelligent metasurface modules; based on the intelligent metasurface module, the reflection angle of the first wireless communication signal is adjusted in real time, and the first wireless communication signal is reflected into the signal receiving range of the train, comprising:

[0118] Step S402, in the case of determining that the train is approaching the previous target base station based on the driving direction and real-time positioning, the intelligent metasurface module corresponding to the previous target base station receives the first wireless communication signal sent by the previous target base station; according to the real-time driving speed, the reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module, and the first wireless communication signal is reflected into the signal receiving range of the train;

[0119] Step S404, in the case of determining that the train is away from the previous target base station and approaches the next target base station based on the driving direction and real-time positioning, the intelligent metasurface module corresponding to the next target base station receives the first wireless communication signal sent by the target base station; according to the real-time driving speed, the reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module, and the first wireless communication signal is reflected into the signal receiving range of the train.

[0120] Specifically, as shown in Figure 5 According to the driving direction and real-time positioning of the train, it is determined that the train is approaching the previous target base station. The intelligent metasurface module (intelligent metasurface A) corresponding to the previous target base station (base station A) receives the first wireless communication signal (such as A1) sent by the previous target base station.

[0121] According to the real-time driving speed of the train, the intelligent metasurface module dynamically adjusts the reflection angle of the first wireless communication signal to ensure that the signal (such as A2) can be accurately reflected into the signal receiving range of the train. For example, if the train travels at a speed of 300 km / h, the intelligent metasurface module (intelligent metasurface A) will dynamically adjust the reflection angle according to this speed to ensure that the signal can accurately cover the inside of the train.

[0122] Next, according to the driving direction and real-time positioning of the train, it is determined that the train is moving away from the previous target base station (base station A) and approaching the next target base station (base station B). The intelligent metasurface module corresponding to the next target base station (intelligent metasurface B) receives the first wireless communication signal sent by the next target base station (such as B1).

[0123] According to the real-time driving speed of the train, the intelligent metasurface module (intelligent metasurface B) dynamically adjusts the reflection angle of the first wireless communication signal to ensure that the signal (such as B2) can be accurately reflected into the signal receiving range of the train. For example, as the train moves, the intelligent metasurface module dynamically adjusts the reflection angle according to the speed of the train to ensure that the signal can accurately cover the inside of the train.

[0124] In this embodiment, the intelligent metasurface module can dynamically switch the signals from different base stations according to the driving direction and real-time positioning of the train. When the train approaches the previous target base station, the corresponding intelligent metasurface module receives and optimizes the signal; when the train moves away from the previous target base station and approaches the next target base station, the corresponding intelligent metasurface module receives and optimizes the signal. This process is achieved through beamforming technology and dynamic control mechanism, significantly improving the stability and coverage quality of the signal, reducing interference, and adapting to the communication needs of high-speed movement in high-speed rail scenarios.

[0125] It should be noted that, Figure 2 An example of one intelligent metasurface module serving two base stations belongs to a shared intelligent metasurface module, which is suitable for the case where the distance between base stations is close and the signal coverage areas overlap.

[0126] Only one intelligent metasurface module needs to be deployed, reducing the investment in hardware devices; reducing the number of devices that need to be maintained, reducing maintenance costs and complexity; an intelligent metasurface module can centrally manage the signals of two base stations, simplifying the control logic and system architecture; through centralized management, the signals of the two base stations can be better coordinated, reducing interference between signals; the signal coverage range can be adjusted more flexibly to ensure that the train can also obtain good signal coverage in the transition area between the two base stations.

[0127] Figure 5 An example of each base station being equipped with an independent intelligent metasurface module is suitable for the case where the distance between base stations is far apart and the signal coverage areas are relatively independent.

[0128] The signal of each base station can be independently optimized, and the reflection angle is dynamically adjusted according to the specific position and speed of the train, to ensure the best effect of signal coverage; each intelligent metasurface module can focus more on optimizing the signal coverage of the corresponding base station, to improve the signal strength and coverage range; each base station has an independent intelligent metasurface module, so even if one module fails, the other module can still work, improving the reliability of the system; in a complex high-speed rail scene, independent intelligent metasurface modules can provide higher fault tolerance and reduce communication interruptions caused by single-point failures.

[0129] The choice of deployment depends on the specific high-speed rail scene and communication needs. If the base stations are close to each other and there is overlap in signal coverage, Figure 2 the shared intelligent metasurface module solution is more cost-effective and has management advantages; if the base stations are far apart and the signal coverage areas are relatively independent, Figure 5 the independent intelligent metasurface module solution can provide better signal optimization and flexibility.

[0130] In an exemplary embodiment, when it is determined based on the driving direction and real-time positioning that the train is moving away from the previous target base station and approaching the next target base station, the intelligent metasurface module corresponding to the previous target base station is controlled to switch to a low-power mode.

[0131] Specifically, when the train no longer needs the signal coverage of the previous target base station, the intelligent metasurface module corresponding to the previous target base station is switched to a low-power mode. This mode can significantly reduce the energy consumption of the module while reducing unnecessary signal interference. The system continuously monitors the position and speed of the train, and when the train meets the above conditions, the switching operation is triggered. The control module sends instructions to the intelligent metasurface module corresponding to the previous target base station, causing it to enter the low-power mode.

[0132] In the low-power mode, the intelligent metasurface module turns off some or all of the reflection units, reducing energy consumption. At the same time, the module enters a standby state, waiting to be reactivated when the train approaches again.

[0133] In this embodiment, by switching the no longer needed intelligent metasurface module to a low-power mode, the system can significantly reduce energy consumption and improve the energy efficiency of the system; in the low-power mode, the intelligent metasurface module reduces unnecessary signal reflection, reducing interference with other communication equipment; the system can dynamically adjust the working state of the intelligent metasurface module according to the actual position and needs of the train, optimize resource allocation, and improve the overall performance of the system.

[0134] In an exemplary embodiment, the installation position of the intelligent metasurface module is within a 10-15m distance range from the height of the rail, and the intelligent metasurface module is provided with a new energy self-generation module.

[0135] Specifically, the installation position of the intelligent metasurface module is within a height range of 10-15 meters from the rail. The height range of 10-15 meters is to ensure that the intelligent metasurface module can effectively cover the signal receiving range of the train, while avoiding the signal being blocked by the train body or other obstacles. Usually installed on overhead columns or special support structures on both sides of the railway, it ensures that the module can clearly receive the base station signal and reflect the signal to the inside of the train.

[0136] At the same time, the intelligent metasurface module is equipped with a new energy self-generation module to provide the power demand of the module. Common new energy self-generation modules include solar panels, wind turbines, etc. Along the high-speed rail, solar panels are the most common choice because high-speed rail lines are usually exposed to sunlight, and solar panels can provide stable power supply. The self-generation module is usually equipped with an energy storage system (such as a battery) to store excess energy for use at night or on cloudy days. Among them, the self-generation module can be equipped with an intelligent management system to monitor the power generation and energy storage status in real time, ensuring the stable operation of the module.

[0137] In this embodiment, by installing the module within a height range of 10-15 meters, effective coverage and transmission of signals can be ensured. At the same time, the new energy self-generation module (such as solar panels) can reduce the dependence on external power, improve the reliability, flexibility and environmental friendliness of the system. This design not only reduces the wiring cost and construction difficulty, but also improves the sustainability of the system, ensuring that the intelligent metasurface module can operate stably under various environmental conditions.

[0138] Further, the intelligent metasurface can identify the direction and state of the train through built-in sensors and recognition algorithms, such as Doppler frequency offset active acoustic light / image recognition sensors.

[0139] Further, when the train is detected to be approaching, the detection information is sent to the control module. The control module sends instructions to the intelligent metasurface and the base station according to the received information, adjusts the signal parameters, and enhances the signal coverage to the train. During the train's journey, the intelligent metasurface and the base station continuously adjust the signal according to the real-time position and speed of the train to ensure communication quality. Further, to simplify the capabilities of the intelligent metasurface and reduce costs, if the base station has the ability to identify incoming and outgoing trains, the information about incoming and outgoing trains can be directly transmitted to the control module through the communication link between the base station and the RIS.

[0140] It should be understood that although each step in the flowchart involved in the above-described embodiments is shown in sequence according to the direction of the arrow, these steps are not necessarily executed in the order indicated by the arrow. Unless otherwise specified herein, there is no strict order limitation for the execution of these steps, and these steps can be executed in other orders. Moreover, at least some of the steps in the flowchart involved in the above-described embodiments can include multiple steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily sequential, but can be alternately or alternately executed with at least part of other steps or steps or stages in other steps.

[0141] Based on the same inventive concept, the embodiments of the present application also provide a railway traffic-based network coverage enhancement device for implementing the above-mentioned railway traffic-based network coverage enhancement method. The problem-solving implementation scheme provided by the device is similar to the implementation scheme described in the above method, so the specific limitations in one or more railway traffic-based network coverage enhancement device embodiments provided below can refer to the limitations of the railway traffic-based network coverage enhancement method described above, which will not be repeated here.

[0142] In one exemplary embodiment, as shown in Figure 6 a railway traffic-based network coverage enhancement device is provided, comprising:

[0143] The data acquisition module 602 is configured to acquire the real-time running speed, running direction and real-time positioning of the train during the running of the train.

[0144] The base station matching module 604 is configured to match the target base station according to the running direction and the real-time positioning.

[0145] The control module 606 is configured to receive the first wireless communication signal sent by the target base station through the intelligent metasurface module.

[0146] The control module 606 is further configured to adjust the reflection angle of the first wireless communication signal in real time based on the intelligent metasurface module according to the real-time running speed, and reflect the first wireless communication signal into the signal receiving range of the train; wherein the target base station and the intelligent metasurface module are located on both sides of the railway.

[0147] The control module 606 is further configured to receive the second wireless communication signal sent by the train user terminal through the intelligent metasurface module.

[0148] The control module 606 is further configured to adjust the reflection angle of the second wireless communication signal based on the intelligent metasurface module according to the real-time driving speed, and reflect the second wireless communication signal to the target base station. In an exemplary embodiment,

[0149] In an exemplary embodiment, the base station matching module 604 is further configured to preliminarily match the base station set in the driving area where the train is located according to the real-time positioning, and further filter the base station set according to the driving direction to match the target base station again.

[0150] In an exemplary embodiment, the target base station includes a previous target base station and a next target base station closest to the train, and the previous target base station and the next target base station correspond to the same intelligent metasurface module; and the first wireless communication signal includes an effective communication signal and an ineffective communication signal.

[0151] The control module 606 is further configured to adjust the reflection angle of the effective communication signal and the refraction angle of the ineffective communication signal based on the intelligent metasurface module according to the real-time driving speed, so as to reflect the effective communication signal into the signal receiving range of the train and refract the ineffective communication signal out of the signal receiving range of the train.

[0152] In an exemplary embodiment, the target base station includes a previous target base station and a next target base station closest to the train, and the previous target base station and the next target base station correspond to different intelligent metasurface modules.

[0153] The control module 606 is further configured to, in a case where the train is determined to approach the previous target base station based on the driving direction and the real-time positioning, control the intelligent metasurface module corresponding to the previous target base station to receive the first wireless communication signal sent by the previous target base station; and adjust the reflection angle of the first wireless communication signal based on the intelligent metasurface module according to the real-time driving speed, and reflect the first wireless communication signal into the signal receiving range of the train.

[0154] The control module 606 is further configured to, in a case where the train is determined to be away from the previous target base station and approach the next target base station based on the driving direction and the real-time positioning, control the intelligent metasurface module corresponding to the next target base station to receive the first wireless communication signal sent by the target base station; and adjust the reflection angle of the first wireless communication signal based on the intelligent metasurface module according to the real-time driving speed, and reflect the first wireless communication signal into the signal receiving range of the train.

[0155] In an exemplary embodiment, the control module 606 is further configured to, in a case where the train is determined to be away from the previous target base station and approach the next target base station based on the driving direction and the real-time positioning, control the intelligent metasurface module corresponding to the previous target base station to switch to a low-power consumption mode.

[0156] In an exemplary embodiment, the height difference between the installation position of the intelligent metasurface module and the rail is within a distance range of 10-15 m, and the intelligent metasurface module is provided with a new energy self-power generation module.

[0157] The various modules in the network coverage enhancement device based on railway traffic described above can be implemented in whole or in part by software, hardware, and combinations thereof. The various modules described above can be embedded in the form of hardware in or independent of the processor in the computer device, or can be stored in the form of software in the memory in the computer device, so as to be called and executed by the processor to perform the operations corresponding to the various modules.

[0158] In an exemplary embodiment, a computer device, which can be a server, is provided, and an internal structure diagram thereof can be as shown in Figure 7 The computer device includes a processor, a memory, an input / output interface (I / O), and a communication interface. The processor, the memory, and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The database of the computer device is used to store real-time running speed, running direction, and real-time positioning data of a train. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with terminals outside through network connection. The computer program is executed by the processor to implement a network coverage enhancement method based on railway traffic.

[0159] Those skilled in the art can understand that Figure 7 The structure shown in the above

[0160] In an exemplary embodiment, a computer device is provided, including a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the following steps:

[0161] In the process of train running, the real-time running speed, running direction, and real-time positioning of the train are obtained;

[0162] The target base station is matched and obtained according to the running direction and real-time positioning.

[0163] The first wireless communication signal transmitted by the target base station is received through the intelligent metasurface module;

[0164] The reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module according to the real-time driving speed, and the first wireless communication signal is reflected into the signal receiving range of the train; wherein the target base station and the intelligent metasurface module are located on both sides of the railway respectively;

[0165] The second wireless communication signal transmitted by the train user terminal is received through the intelligent metasurface module;

[0166] The reflection angle of the second wireless communication signal is adjusted in real time based on the intelligent metasurface module according to the real-time driving speed, and the second wireless communication signal is reflected to the target base station.

[0167] In one embodiment, the processor further implements the following steps when executing the computer program:

[0168] According to the real-time positioning, the base station set in the driving area where the train is located is obtained by preliminary matching;

[0169] According to the driving direction, the target base station is obtained by further screening and re-matching from the base station set.

[0170] In one embodiment, the processor further implements the following steps when executing the computer program:

[0171] The target base station includes a previous target base station and a next target base station closest to the train, and the previous target base station and the next target base station correspond to the same intelligent metasurface module; the first wireless communication signal includes an effective communication signal and an ineffective communication signal;

[0172] The reflection angle of the effective communication signal and the refraction angle of the ineffective communication signal are adjusted in real time based on the intelligent metasurface module according to the real-time driving speed, so as to reflect the effective communication signal into the signal receiving range of the train and refract the ineffective communication signal out of the signal receiving range of the train.

[0173] In one embodiment, the processor further implements the following steps when executing the computer program:

[0174] The target base station includes a previous target base station and a next target base station closest to the train, and the previous target base station and the next target base station correspond to different intelligent metasurface modules;

[0175] In the case of determining that the train is approaching the previous target base station based on the driving direction and real-time positioning, the intelligent metasurface module corresponding to the previous target base station is controlled to receive the first wireless communication signal sent by the previous target base station; and the reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module according to the real-time driving speed, and the first wireless communication signal is reflected into the signal receiving range of the train.

[0176] In the case of determining that the train is approaching the previous target base station based on the driving direction and real-time positioning, the intelligent metasurface module corresponding to the previous target base station is controlled to receive the first wireless communication signal sent by the previous target base station; and the reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module according to the real-time driving speed, and the first wireless communication signal is reflected into the signal receiving range of the train.

[0177] In one embodiment, the processor further implements the following steps when executing the computer program:

[0178] In the case of determining that the train is approaching the previous target base station based on the driving direction and real-time positioning, the intelligent metasurface module corresponding to the previous target base station is controlled to receive the first wireless communication signal sent by the previous target base station; and the reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module according to the real-time driving speed, and the first wireless communication signal is reflected into the signal receiving range of the train.

[0179] In one embodiment, the height difference between the installation position of the intelligent metasurface module and the rail is within a distance range of 10-15m, and the intelligent metasurface module is provided with a new energy self-power generation module.

[0180] In one embodiment, a computer readable storage medium is provided, and the computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the following steps:

[0181] In the process of train driving, the real-time driving speed, driving direction and real-time positioning of the train are obtained;

[0182] According to the driving direction and real-time positioning, the target base station is matched and obtained;

[0183] The first wireless communication signal sent by the target base station is received through the intelligent metasurface module;

[0184] The reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module according to the real-time driving speed, and the first wireless communication signal is reflected into the signal receiving range of the train; wherein the target base station and the intelligent metasurface module are located on both sides of the railway;

[0185] The second wireless communication signal sent by the train user terminal is received through the intelligent metasurface module;

[0186] The reflection angle of the second wireless communication signal is adjusted in real time based on the intelligent metasurface module according to the real-time driving speed, and the second wireless communication signal is reflected to the target base station.

[0187] In one embodiment, the computer program, which is executed by the processor, further implements the following steps:

[0188] According to the real-time positioning, the preliminary matching obtains a base station set in a running area where the train is located;

[0189] According to the running direction, the base station set is further filtered, and the target base station is obtained through re-matching.

[0190] In one embodiment, the computer program, which is executed by the processor, further implements the following steps:

[0191] The target base station includes a previous target base station and a next target base station closest to the train, and the previous target base station and the next target base station correspond to the same intelligent metasurface module; the first wireless communication signal includes an effective communication signal and an ineffective communication signal;

[0192] According to the real-time running speed, the reflection angle of the effective communication signal and the refraction angle of the ineffective communication signal are adjusted in real time based on the intelligent metasurface module, so as to reflect the effective communication signal into the signal receiving range of the train and refract the ineffective communication signal out of the signal receiving range of the train.

[0193] In one embodiment, the computer program, which is executed by the processor, further implements the following steps:

[0194] The target base station includes a previous target base station and a next target base station closest to the train, and the previous target base station and the next target base station correspond to different intelligent metasurface modules;

[0195] In a case where it is determined based on the running direction and the real-time positioning that the train is close to the previous target base station, the intelligent metasurface module corresponding to the previous target base station is controlled to receive the first wireless communication signal sent by the previous target base station; according to the real-time running speed, the reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module, and the first wireless communication signal is reflected into the signal receiving range of the train;

[0196] In a case where it is determined based on the running direction and the real-time positioning that the train is away from the previous target base station and close to the next target base station, the intelligent metasurface module corresponding to the next target base station is controlled to receive the first wireless communication signal sent by the target base station; according to the real-time running speed, the reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module, and the first wireless communication signal is reflected into the signal receiving range of the train.

[0197] In one embodiment, the computer program, which is executed by the processor, further implements the following steps:

[0198] In a case where the train is determined to be away from a previous target base station and close to a next target base station based on the driving direction and the real-time positioning, the smart metasurface module corresponding to the previous target base station is controlled to switch to a low-power mode.

[0199] In an embodiment, the height difference between the installation position of the smart metasurface module and the rail is within a range of 10-15 m, and the smart metasurface module is provided with a new energy self-power generation module.

[0200] In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the following steps:

[0201] In the process of train driving, the real-time driving speed, driving direction and real-time positioning of the train are obtained;

[0202] According to the driving direction and the real-time positioning, a target base station is obtained by matching;

[0203] The first wireless communication signal sent by the target base station is received through the smart metasurface module;

[0204] According to the real-time driving speed, the reflection angle of the first wireless communication signal is adjusted in real time based on the smart metasurface module, and the first wireless communication signal is reflected into the signal receiving range of the train; wherein the target base station and the smart metasurface module are located on both sides of the railway;

[0205] The second wireless communication signal sent by the train user terminal is received through the smart metasurface module;

[0206] According to the real-time driving speed, the reflection angle of the second wireless communication signal is adjusted in real time based on the smart metasurface module, and the second wireless communication signal is reflected to the target base station.

[0207] In an embodiment, the computer program, when executed by the processor, further implements the following steps:

[0208] According to the real-time positioning, a set of base stations in the driving area where the train is located is obtained by preliminary matching;

[0209] According to the driving direction, the target base station is obtained by further screening and matching from the set of base stations.

[0210] In an embodiment, the computer program, when executed by the processor, further implements the following steps:

[0211] The target base station includes a previous target base station and a next target base station closest to the train, and the previous target base station and the next target base station correspond to the same smart metasurface module; the first wireless communication signal includes valid communication signals and invalid communication signals;

[0212] According to the real-time driving speed, the reflection angle of the effective communication signal and the refraction angle of the ineffective communication signal are adjusted in real time based on the intelligent metasurface module, so as to reflect the effective communication signal into the signal receiving range of the train and refract the ineffective communication signal out of the signal receiving range of the train.

[0213] In one embodiment, the computer program, when executed by the processor, further implements the following steps:

[0214] The target base station includes a previous target base station and a next target base station closest to the train, and the previous target base station and the next target base station correspond to different intelligent metasurface modules;

[0215] In a case where it is determined based on the driving direction and the real-time positioning that the train is close to the previous target base station, the intelligent metasurface module corresponding to the previous target base station is controlled to receive the first wireless communication signal sent by the previous target base station; and according to the real-time driving speed, the reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module, and the first wireless communication signal is reflected into the signal receiving range of the train.

[0216] In a case where it is determined based on the driving direction and the real-time positioning that the train is away from the previous target base station and close to the next target base station, the intelligent metasurface module corresponding to the next target base station is controlled to receive the first wireless communication signal sent by the target base station; and according to the real-time driving speed, the reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module, and the first wireless communication signal is reflected into the signal receiving range of the train.

[0217] In one embodiment, the computer program, when executed by the processor, further implements the following steps:

[0218] In a case where it is determined based on the driving direction and the real-time positioning that the train is away from the previous target base station and close to the next target base station, the intelligent metasurface module corresponding to the previous target base station is controlled to switch to a low-power consumption mode.

[0219] In one embodiment, the installation position of the intelligent metasurface module is within a height difference range of 10-15 m from the rail, and the intelligent metasurface module is provided with a new energy self-power generation module.

[0220] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant regulations.

[0221] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when executed, can include the processes of the above-mentioned embodiment methods. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. The non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. The volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration but not limitation, the RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., without being limited thereto.

[0222] The technical features of the above embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present application.

[0223] The above-described embodiments are merely illustrative of several embodiments of the present application, and the description is relatively specific and detailed, but should not be understood as a limitation on the scope of the patent. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A method for network coverage enhancement based on railway traffic, characterized in that, The method comprises: During train running, acquiring real-time running speed, running direction and real-time positioning of the train; According to the running direction and the real-time positioning, a target base station is matched and obtained; Through an intelligent metasurface module, a first wireless communication signal sent by the target base station is received, the intelligent metasurface module is deployed on the side of the high-speed rail along which no base station is deployed, and is used for enhancing signal coverage of users on the side opposite to the base station; the installation position of the intelligent metasurface module and the height difference of the rail are within a distance range of 10-15 m, and the intelligent metasurface module is provided with a new energy self-power generation module; The target base station comprises a previous target base station and a next target base station closest to the train, and the previous target base station and the next target base station correspond to the same intelligent metasurface module; the first wireless communication signal comprises effective communication signals and ineffective communication signals; according to the real-time running speed, the reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module, and the first wireless communication signal is reflected into the signal receiving range of the train; wherein the target base station and the intelligent metasurface module are located on both sides of the railway; wherein according to the real-time running speed, the reflection angle of the effective communication signal and the refraction angle of the ineffective communication signal are adjusted in real time based on the intelligent metasurface module, so as to reflect the effective communication signal into the signal receiving range of the train and refract the ineffective communication signal out of the signal receiving range of the train; Through the intelligent metasurface module, a second wireless communication signal sent by a train user terminal is received; According to the real-time running speed, the reflection angle of the second wireless communication signal is adjusted in real time based on the intelligent metasurface module, and the second wireless communication signal is reflected to the target base station.

2. The method of claim 1, wherein, According to the running direction and the real-time positioning, the target base station is matched and obtained, which comprises: According to the real-time positioning, a base station set in the running area where the train is located is preliminarily matched and obtained; According to the running direction, the target base station is further matched and obtained by further screening from the base station set.

3. The method of claim 1, wherein, The target base station comprises a previous target base station and a next target base station closest to the train, and the previous target base station and the next target base station correspond to different intelligent metasurface modules; The reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module, and the first wireless communication signal is reflected into the signal receiving range of the train, which comprises: In a case that the train is close to the previous target base station based on the running direction and the real-time positioning, the intelligent metasurface module corresponding to the previous target base station receives the first wireless communication signal sent by the previous target base station; according to the real-time running speed, the reflection angle of the first wireless communication signal is adjusted in real time based on the intelligent metasurface module, and the first wireless communication signal is reflected into the signal receiving range of the train; In a case where it is determined, based on the driving direction and the real-time positioning, that the train is away from the previous target base station and close to the next target base station, the control module controls the intelligent metasurface module corresponding to the next target base station to receive the first wireless communication signal sent by the target base station; and the control module controls the intelligent metasurface module to adjust the reflection angle of the first wireless communication signal in real time based on the real-time driving speed, and reflect the first wireless communication signal into the signal receiving range of the train.

4. The method of claim 3, wherein, The method further includes: In a case where it is determined, based on the driving direction and the real-time positioning, that the train is away from the previous target base station and close to the next target base station, the control module controls the intelligent metasurface module corresponding to the previous target base station to switch to a low-power consumption mode.

5. A network coverage enhancement device based on railway traffic, characterized in that, The device includes: The data acquisition module is configured to acquire the real-time driving speed, the driving direction and the real-time positioning of the train during train driving; The base station matching module is configured to match the target base station based on the driving direction and the real-time positioning; The control module is configured to receive, by the intelligent metasurface module, the first wireless communication signal sent by the target base station; the intelligent metasurface module is deployed on the side of the high-speed rail along which no base station is deployed, for enhancing the signal coverage of users on the side opposite to the base station; the installation position of the intelligent metasurface module is within a distance range of 10-15 m from the height of the rail, and the intelligent metasurface module is provided with a new energy self-power generation module; the target base station includes a previous target base station and a next target base station closest to the train, and the previous target base station and the next target base station correspond to the same intelligent metasurface module; the first wireless communication signal includes an effective communication signal and an ineffective communication signal; The control module is further configured to adjust the reflection angle of the first wireless communication signal in real time based on the intelligent metasurface module according to the real-time driving speed, and reflect the first wireless communication signal into the signal receiving range of the train; wherein the target base station and the intelligent metasurface module are located on two sides of the railway; wherein the reflection angle of the effective communication signal and the refraction angle of the ineffective communication signal are adjusted in real time based on the intelligent metasurface module according to the real-time driving speed, so as to reflect the effective communication signal into the signal receiving range of the train and refract the ineffective communication signal out of the signal receiving range of the train; The control module is further configured to receive, by the intelligent metasurface module, the second wireless communication signal sent by the user terminal of the train. The control module is further configured to adjust the reflection angle of the second wireless communication signal in real time based on the intelligent metasurface module according to the real-time driving speed, and reflect the second wireless communication signal to the target base station.

6. The apparatus of claim 5, wherein, The base station matching module is further configured to preliminarily match a base station set in the driving area where the train is located according to the real-time positioning; and further screen the base station set according to the driving direction, and match the target base station again.

7. The apparatus of claim 5, wherein, The target base station includes a previous target base station and a next target base station closest to the train, and the previous target base station and the next target base station correspond to different intelligent metasurface modules; the control module is further configured to, in a case where it is determined based on the driving direction and the real-time positioning that the train is close to the previous target base station, control the intelligent metasurface module corresponding to the previous target base station to receive a first wireless communication signal transmitted by the previous target base station; and adjust a reflection angle of the first wireless communication signal based on the intelligent metasurface module in real time according to the real-time driving speed, and reflect the first wireless communication signal into a signal receiving range of the train. In a case where it is determined based on the driving direction and the real-time positioning that the train is away from the previous target base station and close to the next target base station, the control module controls the intelligent metasurface module corresponding to the next target base station to receive a first wireless communication signal transmitted by the target base station; and adjusts a reflection angle of the first wireless communication signal based on the intelligent metasurface module in real time according to the real-time driving speed, and reflects the first wireless communication signal into a signal receiving range of the train.

8. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that, The processor, when executing the computer program, implements the steps of the method of any one of claims 1 to 4.

9. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program, when executed by the processor, implements the steps of the method of any one of claims 1 to 4.

10. A computer program product comprising a computer program, characterized in that, The computer program, when executed by the processor, implements the steps of the method of any one of claims 1 to 4.

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