Railside ap antenna with car chassis separation, communication method, device, medium

Abstract

The application provides a rail-side AP antenna with separated car body and chassis, a communication method, equipment and a medium. The rail-side AP antenna comprises a high-position plate-shaped antenna, a low-position plate-shaped antenna and a one-to-two power divider. The one-to-two power divider divides a radio frequency signal into two paths. When the car body and the chassis of a target train are not separated, the high-position plate-shaped antenna establishes a communication connection with a first AP antenna of the target train and communicates with the car body of the target train based on one of the divided radio frequency signals. When the car body and the chassis of the target train are separated, the low-position plate-shaped antenna establishes a communication connection with a second AP antenna of the target train and communicates with the chassis of the target train based on the other of the divided radio frequency signals. Through the high-position plate-shaped antenna and the low-position plate-shaped antenna, the rail-side AP antenna establishes communication connections with the car body and the chassis of a train with separated car body and chassis respectively, and communicates with the car body and the chassis through the one-to-two power divider and the communication connections respectively, so that the communication requirements in the whole train scene and the separated scene can be met simultaneously.

Description

Technical Field

[0001] This application relates to the field of rail transit technology, and in particular to a trackside AP antenna, communication method, equipment, and medium that are separated from the car chassis. Background Technology

[0002] As subway trains transition from fully automated operation to fully automated and autonomous train control, trains with separate carriages and chassis are becoming a major trend in intelligent autonomous trains. These carriage-chassis separated trains use lower / lighter designs and employ a carriage / pod carrier concept, allowing for flexible adjustment of carriage types according to operational needs, enabling mixed passenger and freight transport, and providing greater flexibility to the train operation system.

[0003] With the rapid development of subway trains with separate carriages and chassis, the issue of vehicle-to-ground communication for these trains urgently needs to be addressed. Unlike traditional vehicle-to-ground communication networks, which only require consideration of the complete train, a major challenge for subway trains with separate carriages and chassis is ensuring the continuity and smoothness of communication during the separation process. Communication interruptions must be avoided to prevent future operational and maintenance problems. Furthermore, due to the separation of carriages and the absence of a driver's cab, HMI, and other equipment, manual driving is impossible. This necessitates that the monitoring center reliably control the chassis operation through vehicle-to-ground communication. The high precision and reliability of this control place extremely high demands on the reliability, signal quality, and bandwidth of the vehicle-to-ground communication. Therefore, this type of vehicle-to-ground communication requires a comprehensive consideration of specific requirements such as reliability, signal quality, bandwidth, and smooth continuity. Traditional communication solutions cannot meet these requirements and necessitate a redesign. Summary of the Invention

[0004] To address one of the aforementioned technical deficiencies, this application provides a trackside AP antenna separated from the vehicle chassis, a communication method, equipment, and medium.

[0005] The first aspect of this application provides a trackside AP antenna that is separated from the car chassis. The trackside AP antenna includes: a high-position plate antenna, a low-position plate antenna, and a 1-to-2 power divider.

[0006] A 1-to-2 power divider is connected to the RF feed line of the trackside AP antenna to split the RF signal of the trackside AP antenna into two paths.

[0007] A high-position plate antenna is used to establish a first communication connection with the first AP antenna of the target train when the carriage and chassis of the target train are not separated; through the first communication connection, it communicates with the carriage of the target train based on a branched radio frequency signal; the target train is a train with carriages and chassis separated, the first AP antenna is installed on the carriage of the target train, and a second AP antenna is installed on the chassis of the target train; when the carriage and chassis of the target train are not separated, the signal strength of the second AP antenna is less than the minimum signal strength threshold.

[0008] A low-position plate antenna is used to establish a second communication connection with the second AP antenna of the target train when the carriage and chassis of the target train are separated; through the second communication connection, it communicates with the chassis of the target train based on another branched radio frequency signal; wherein, when the carriage and chassis of the target train are separated, the signal strength of the second AP antenna is not less than the minimum signal strength threshold.

[0009] Optionally, the high-position plate antenna is at the same height as the first AP antenna;

[0010] The low-position plate antenna is at the same height as the second AP antenna.

[0011] Optionally, when the carriages and chassis of the target train are not separated, the carriages cover the entire chassis, the first AP antenna is working, the second AP antenna is not working, and only the high-position plate antenna of the trackside AP antenna communicates with the carriages of the target train through the first communication connection based on a branched radio frequency signal.

[0012] When the carriages and chassis of the target train are separated, the first AP antenna is not working, the second AP antenna is working, and only the low-position plate antenna of the trackside AP antenna communicates with the chassis of the target train through the second communication connection based on the other branched radio frequency signal.

[0013] In a second aspect of this application, a communication method for a trackside AP antenna with a carriage and chassis separated based on the first aspect is provided. The target train for which the method is applied is a train with carriages and chassis separated. A first AP antenna is installed on the carriages of the target train, and a second AP antenna is installed on the chassis of the target train.

[0014] The methods include:

[0015] When the carriage and chassis are not separated, the first AP antenna is powered to make the first AP antenna work and the first AP antenna establishes a first communication connection with the high-position plate antenna of the trackside AP antenna.

[0016] When the carriage is separated from the chassis, power is supplied to the second AP antenna to enable it to work, and the second AP antenna establishes a second communication connection with the low-position plate antenna of the trackside AP antenna.

[0017] Optionally, when the target train is powered on, the second AP antenna is powered off.

[0018] When the carriage and chassis are not separated, the method also includes:

[0019] Power off the second AP antenna to disable it.

[0020] In a third aspect of this application, a communication method for a trackside AP antenna with a carriage and chassis separated based on the first aspect is provided. The target train of the method is a train with a carriage and chassis separated. A first AP antenna is installed on the carriage of the target train, and a second AP antenna is installed on the chassis of the target train. The target train has routing functions for the first AP antenna and the second AP antenna.

[0021] The methods include:

[0022] When the carriage and chassis are not separated, the first AP antenna is controlled to work through the routing function, thereby controlling the first AP antenna to establish a first communication connection with the high-position plate antenna of the trackside AP antenna;

[0023] When the carriage is separated from the chassis, the second AP antenna is controlled to work through the routing function, thereby controlling the second AP antenna to establish a second communication connection with the low-position plate antenna of the trackside AP antenna.

[0024] In a fourth aspect of this application, an electronic device is provided, which is located on a target train, wherein the target train is a train in which the carriages and chassis are separated, a first AP antenna is installed on the carriages of the target train, and a second AP antenna is installed on the chassis of the target train.

[0025] Electronic devices include:

[0026] Memory;

[0027] Processor; and

[0028] Computer programs;

[0029] The computer program is stored in memory and configured to be executed by a processor to implement the method described in the second aspect.

[0030] In a fifth aspect of this application, an electronic device is provided, which is located on a target train. The target train is a train with separate carriages and chassis. A first AP antenna is installed on the carriages of the target train, and a second AP antenna is installed on the chassis of the target train. The target train has routing functions for the first AP antenna and the second AP antenna.

[0031] Electronic devices include:

[0032] Memory;

[0033] Processor; and

[0034] Computer programs;

[0035] The computer program is stored in memory and configured to be executed by a processor to implement the method described in the third aspect.

[0036] In a sixth aspect of this application, a computer-readable storage medium is provided, the computer-readable storage medium being located on a target train, the target train being a train with carriages and chassis separated, a first AP antenna being installed on the carriages of the target train, and a second AP antenna being installed on the chassis of the target train.

[0037] A computer program is stored on a computer-readable storage medium; the computer program is executed by a processor to implement the method described in the second aspect.

[0038] In a seventh aspect of this application, a computer-readable storage medium is provided, the computer-readable storage medium being located on a target train, a first AP antenna being installed on the carriage of the target train, a second AP antenna being installed on the chassis of the target train, and the target train having routing functions for the first AP antenna and the second AP antenna.

[0039] A computer program is stored on a computer-readable storage medium; the computer program is executed by a processor to implement the method described in the third aspect.

[0040] This application provides a trackside AP antenna, communication method, device, and medium for a train car and chassis separated. The trackside AP antenna includes a high-position plate antenna, a low-position plate antenna, and a 1-to-2 power divider. The 1-to-2 power divider is connected to the antenna port RF feed line of the trackside AP antenna to split the RF signal of the trackside AP antenna into two paths. The high-position plate antenna is used to establish a first communication connection with the first AP antenna of the target train when the train car and chassis are not separated. Through the first communication connection, communication is established with the train car based on the split RF signal. The target train consists of a train car and a chassis. The train is separated. A first AP antenna is installed on the carriage of the target train, and a second AP antenna is installed on the chassis of the target train. When the carriage and chassis of the target train are not separated, the signal strength of the second AP antenna is less than the minimum signal strength threshold. A low-position plate antenna is used to establish a second communication connection with the second AP antenna of the target train when the carriage and chassis of the target train are separated. Through the second communication connection, communication is established with the chassis of the target train based on another branched radio frequency signal. The signal strength of the second AP antenna is not less than the minimum signal strength threshold when the carriage and chassis of the target train are separated.

[0041] This application uses a high-position plate antenna and a low-position plate antenna to enable the trackside AP antenna to establish communication connections with the carriages and chassis of the separated train, respectively. Through a 1-to-2 power divider and communication connections, it can communicate with the carriages and chassis, thus simultaneously meeting the communication requirements in both whole-vehicle and separated scenarios. Attached Figure Description

[0042] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0043] Figure 1 A schematic diagram of the structure of a trackside AP antenna separated from the carriage chassis provided in this application embodiment;

[0044] Figure 2 This application provides a schematic diagram of a train structure with a separated carriage and chassis.

[0045] Figure 3 A schematic diagram of another trackside AP antenna with a separate carriage chassis provided in this application embodiment;

[0046] Figure 4 A schematic diagram of another trackside AP antenna with a separate carriage chassis provided in this application embodiment;

[0047] Figure 5 A schematic flowchart illustrating a communication method based on a trackside AP antenna separated from the carriage chassis, provided in an embodiment of this application;

[0048] Figure 6 A schematic flowchart illustrating a communication method based on a trackside AP antenna separated from the carriage chassis, provided in an embodiment of this application;

[0049] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0050] Figure 8 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0051] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0052] In the process of developing this application, the inventors discovered that with the rapid development of subway trains with separate carriages and chassis, the problem of vehicle-to-ground communication for these trains urgently needs to be solved. Unlike traditional vehicle-to-ground communication networks, which only require consideration of the complete train, a major challenge for subway trains with separate carriages and chassis is ensuring the continuity and smoothness of communication during the separation process, preventing communication interruptions and avoiding future operational and maintenance problems. Furthermore, due to the separation of carriages, the absence of a driver's cab, HMI, and other equipment makes manual driving impossible. This necessitates that the monitoring center reliably control the chassis operation through vehicle-to-ground communication, placing extremely high demands on the reliability, signal quality, and bandwidth of the communication. Therefore, this type of vehicle-to-ground communication requires comprehensive consideration of specific requirements such as reliability, signal quality, bandwidth, and smooth continuity. Traditional communication solutions cannot meet these requirements and necessitate a redesign.

[0053] To address the aforementioned problems, this application provides a trackside AP antenna with a separated carriage and chassis, a communication method, equipment, and medium. The trackside AP antenna includes a high-position plate antenna, a low-position plate antenna, and a 1-to-2 power divider. The 1-to-2 power divider is connected to the antenna port RF feed line of the trackside AP antenna to split the RF signal of the trackside AP antenna into two paths. The high-position plate antenna is used to establish a first communication connection with the first AP antenna of the target train when the carriage and chassis of the target train are not separated. Through the first communication connection, communication is established with the carriage of the target train based on the split RF signal. For trains with separated carriages and chassis, a first AP antenna is installed on the carriage of the target train, and a second AP antenna is installed on the chassis of the target train. When the carriage and chassis of the target train are not separated, the signal strength of the second AP antenna is less than a minimum signal strength threshold. A low-position plate antenna is used to establish a second communication connection with the second AP antenna of the target train when the carriage and chassis are separated. Through the second communication connection, communication is established with the chassis of the target train based on a split radio frequency signal. The signal strength of the second AP antenna is not less than the minimum signal strength threshold when the carriage and chassis of the target train are separated. This application uses a high-position plate antenna and a low-position plate antenna to enable the trackside AP antenna to establish communication connections with the carriage and chassis of the separated train, respectively. Through a 1-to-2 power divider and communication connections, communication with the carriage and chassis can be achieved simultaneously in both whole-vehicle and separated scenarios.

[0054] See Figure 1 The trackside AP (Access Point) antenna separated from the carriage chassis provided in this embodiment includes: a high-position plate antenna, a low-position plate antenna, and a 1-to-2 power divider.

[0055] 1. One-to-two power divider

[0056] A 1-to-2 power divider is connected to the RF feed line of the trackside AP antenna to split the RF signal of the trackside AP antenna into two paths.

[0057] This 1-to-2 power divider can achieve dual-path RF splitting of the trackside AP antenna port. In practice, a 1-to-2 power divider can be connected to the RF feed line of the traditional trackside AP antenna port to split the RF signal of the trackside AP into two paths. One path is connected to the high-position plate antenna for communication with the car AP, and the other path is connected to the low-position plate antenna for communication with the chassis AP, ensuring the signal coverage quality of the chassis AP during the separation of the car and the chassis or during pure chassis operation.

[0058] 2. High-position plate antenna

[0059] A high-mounted plate antenna is used to establish a first communication connection with the first AP antenna of the target train. Through this first communication connection, communication is established with the carriages of the target train based on a branched-off radio frequency signal.

[0060] The target train is a train with its carriages and chassis separated. The first AP antenna is installed on the carriage of the target train, and the second AP antenna is installed on the chassis of the target train. When the carriages and chassis of the target train are not separated, the signal strength of the second AP antenna is less than the minimum signal strength threshold.

[0061] If the signal strength is less than the minimum signal strength threshold, the signal strength of the second AP antenna can be considered zero, or extremely weak, making communication impossible; that is, the second AP antenna is not working. In other words, when the target train's carriages and chassis are not separated, the carriages cover the entire chassis. This coverage results in the second AP antenna on the chassis having no signal or extremely poor signal, making communication impossible. At this time, the first AP antenna is active, and therefore the high-positioned plate antenna establishes a first communication connection with the target train's first AP antenna. Through this first communication connection, communication with the target train's carriages is achieved based on a branched-off radio frequency signal.

[0062] Therefore, in practical implementation, a high-positioned plate antenna is used to establish a first communication connection with the first AP antenna of the target train when the carriages and chassis of the target train are not separated. Through the first communication connection, communication is established with the carriages of the target train based on a branched-off radio frequency signal.

[0063] It should be noted that the terms "first" and "second" in this embodiment and subsequent embodiments only distinguish between two AP antennas installed in different locations (one AP antenna is installed on the carriage, and the other AP antenna is installed on the chassis), and do not imply any order, priority, or other meanings. In other words, both the first AP antenna and the second AP antenna are essentially the same AP antenna; the AP antenna installed on the carriage is simply referred to as the first AP antenna, and the AP antenna installed on the chassis is referred to as the second AP antenna.

[0064] Similarly, the term "first" in the first communication connection in this embodiment and subsequent embodiments is only used to distinguish communication connections in different locations and has no other meaning. That is, the first communication connection is a single communication connection, specifically a communication connection between a high-positioned plate antenna and an AP antenna installed on the carriage of the target train. To distinguish it from the subsequent communication connection between a low-positioned plate antenna and an AP antenna installed on the chassis of the target train, the communication connection between the high-positioned plate antenna and the AP antenna installed on the carriage of the target train is referred to as the first communication connection, and the communication connection between the low-positioned plate antenna and the AP antenna installed on the chassis of the target train is referred to as the second communication connection.

[0065] In addition, to ensure signal coverage, the high-mounted plate antenna is at the same height as the first AP antenna. In practice, the height of the high-mounted plate antenna can be the same as the height of the roof-mounted AP antenna.

[0066] 3. Low-position plate antenna

[0067] A low-profile plate antenna is used to establish a second communication connection with the target train's second AP antenna. Through this second communication connection, communication is established with the target train's chassis based on a separate radio frequency signal.

[0068] Among them, when the carriages and chassis of the target train are separated, the signal strength of the second AP antenna is not less than the minimum signal strength threshold.

[0069] If the signal strength is not less than the minimum signal strength threshold, the signal strength of the second AP antenna can be considered to meet the communication requirements, and communication can proceed. That is, when the target train's carriage and chassis separate, as the carriage rises, it no longer covers the chassis, the signal of the second AP antenna on the chassis is restored, and the second AP antenna operates (e.g., receiving wireless signals and communicating). At this time, the low-position plate antenna establishes a second communication connection with the target train's second AP antenna. Through this second communication connection, communication with the target train's chassis is achieved based on a separate radio frequency signal. Simultaneously, the first AP antenna on the carriage, due to the disconnection of the electrical connector (the electrical signal connector between the carriage and the chassis), ceases to transmit and receive signals and stops working; that is, the first AP antenna is not operational.

[0070] In practice, a low-position plate-shaped antenna is used to establish a second communication connection with the second AP antenna of the target train when the carriage and chassis of the target train are separated; through the second communication connection, it communicates with the chassis of the target train based on another branched radio frequency signal.

[0071] In addition, to ensure signal coverage, the low-position plate antenna is at the same height as the second AP antenna. In practice, the installation height of the low-position plate antenna on the pole or tunnel wall is similar to the height of the AP antenna on the train chassis.

[0072] At this point, the trackside AP antenna establishes two communication connections with the target train: a first connection between the high-position plate antenna of the trackside AP antenna and the first AP antenna on the target train carriage, and a second connection between the low-position plate antenna of the trackside AP antenna and the second AP antenna on the target train chassis. Since the RF signal of the trackside AP antenna is split into two paths by a 1-to-2 power divider, the two resulting RF signals are identical. Furthermore, since one of the two split RF signals is connected to the high-position plate antenna and the other to the low-position plate antenna, the RF signal of the trackside AP antenna can communicate with the target train through both antennas, and the communication content is identical. This ensures that regardless of whether the target train carriage is separated from the chassis or not, one communication path is always operational, meeting the communication requirements in both whole-vehicle and separated scenarios.

[0073] However, if communication is conducted simultaneously through two communication connections, it will cause problems such as redundant communication. Therefore, in this embodiment, when the target train's carriage and chassis are not separated, only the high-position plate antenna of the trackside AP antenna communicates with the target train's carriage through the first communication connection, based on a branched-off radio frequency signal. When the target train's carriage and chassis are separated, only the low-position plate antenna of the trackside AP antenna communicates with the target train's chassis through the second communication connection, based on a branched-off radio frequency signal. That is, when the target train's carriage and chassis are not separated, the carriage covers the entire chassis, the first AP antenna is active, the second AP antenna is inactive, and only the high-position plate antenna of the trackside AP antenna communicates with the target train's carriage through the first communication connection, based on a branched-off radio frequency signal. When the target train's carriage and chassis are separated, the first AP antenna is inactive, the second AP antenna is active, and only the low-position plate antenna of the trackside AP antenna communicates with the target train's chassis through the second communication connection, based on a branched-off radio frequency signal.

[0074] This ensures that communication occurs only based on one communication connection at any given time.

[0075] Furthermore, in practical implementation, it's impossible to communicate simultaneously through two communication connections. If the carriage and chassis are not separated, the upper metal carriage will cover the entire chassis, and the second AP antenna on the chassis will have no signal or a very poor signal. In this case, the second communication connection will be broken, and only the first communication connection will function normally. The trackside AP antenna can only communicate with the target train's carriage through the first communication connection via the high-position plate antenna, based on a split radio frequency signal. If the carriage and chassis separate, the carriage will rise, and the second AP antenna on the chassis will resume signal reception. The AP on the top of the carriage will no longer transmit or receive signals due to the disconnection of the electrical connector (the electrical signal connector between the carriage and the chassis). At this time, the second communication connection will be restored, while the first communication connection will be broken. The trackside AP antenna can only communicate with the target train's chassis through the second communication connection via the low-position plate antenna, based on a split radio frequency signal.

[0076] Therefore, the working process of the trackside AP antenna with the carriage chassis separated provided in this embodiment in practical application is as follows:

[0077] 1. When the carriage and chassis are integrated, the metal carriage covers the entire chassis, and the AP antenna on the chassis has no signal or a very poor signal. At this time, the signal of the vehicle AP can only be received through the AP vehicle antenna on the top of the carriage.

[0078] 2. If the carriage is separated from the chassis and the carriage is raised, the AP antenna on the chassis will receive wireless signals, while the AP on the top of the carriage will no longer transmit or receive signals because the electrical connector (the electrical signal connector between the carriage and the chassis) is disconnected.

[0079] 3. After that, the carriages are separated, and only the chassis relies on the AP antenna installed on the chassis to achieve independent vehicle-to-ground communication control.

[0080] 4. When the carriage is reinstalled on the chassis, the metal carriage covers the entire chassis. The electrical plugs are reconnected, the AP inside the carriage is powered on, and vehicle-to-ground communication is restored through the AP antenna on the top of the carriage.

[0081] Furthermore, in practical implementation, redundant operations are performed to ensure normal train communication. For example... Figure 2 As shown, redundancy is implemented in both the carriages and chassis of the target train. For this type of redundant target train, the trackside AP antenna with separate carriage and chassis provided in this embodiment also provides redundancy, such as... Figure 3 As shown. If the first AP antenna is 3.9 meters from the rail surface and the second AP antenna is 1.1 meters from the rail surface, then the railside AP antennas separated from the car chassis provided in this embodiment are also correspondingly arranged with a high-position plate antenna and a low-position plate antenna, such as... Figure 4 As shown, where Figure 4 The vehicle-mounted antenna is the first AP antenna, and the chassis antenna is the second AP antenna.

[0082] The development of subway trains with separate carriages and chassis is currently constrained by WLAN vehicle-to-ground communication. Traditional WLAN vehicle-to-ground communication is limited by previous product design and switching software algorithms under high-speed movement. The trackside APs and onboard APs of the WLAN system both use narrow-beam directional plate antennas with horizontal and vertical beam angles of only about 30 degrees. Once the design and construction are completed, they can only meet the vehicle-to-ground communication under the condition of the whole vehicle. If the carriage is separated from the chassis, since the height of the trackside AP antenna in the original design is similar to the height of the roof, the signal can only cover the roof area and cannot cover the APs on the chassis well. Especially when the train is running near the trackside AP antenna, the huge height difference and the narrow beam of the directional antenna will cause the trackside AP to be unable to cover the chassis AP, forming a communication blind spot. This will result in the inability to support continuous and smooth communication during the separation of carriage and chassis or when the chassis is running alone, which will cause problems for operation and maintenance and affect efficiency.

[0083] For the aforementioned scenario (i.e., the special train scenario where the carriage and chassis are separated), this embodiment provides a trackside AP antenna with separated carriage and chassis, supporting continuous communication throughout the entire process from the whole vehicle – the separation of carriage and chassis – independent chassis operation – and the reassembly of carriage and chassis into a complete vehicle. The trackside AP antenna with separated carriage and chassis provided in this embodiment adopts a power-divided dual-path RF structure at the antenna port, meeting the communication requirements of this special train scenario with separated carriage and chassis, and supporting seamless vehicle-to-ground communication.

[0084] The trackside AP antenna separated from the carriage chassis provided in this embodiment has the following effects:

[0085] 1) It realizes the seamless connection of train operation - separation of carriage and chassis - independent operation of chassis - and combination of carriage and chassis into a whole vehicle, which improves operational efficiency and solves the technical bottleneck for future commercial use.

[0086] 2) Supports smooth and continuous vehicle-to-ground communication.

[0087] 3) Apply WLAN (including WiFi 6) technology to special trains with separate carriages and chassis, while ensuring communication throughput and reliability.

[0088] Based on the above, the trackside AP antenna with a separate carriage and chassis provided in this embodiment enables continuous vehicle-to-ground WLAN communication for subway trains with separate carriages and chassis, thus meeting the special communication needs of future trains.

[0089] This embodiment provides a trackside AP antenna with a separated carriage and chassis, including a high-position plate antenna, a low-position plate antenna, and a 1-to-2 power divider. The 1-to-2 power divider is connected to the RF feed line of the trackside AP antenna's antenna port, used to split the RF signal of the trackside AP antenna into two paths. The high-position plate antenna is used to establish a first communication connection with the first AP antenna of the target train when the carriage and chassis of the target train are not separated. Through the first communication connection, communication is made with the carriage of the target train based on the split RF signal. The target train is a train with a separated carriage and chassis. A P-antenna is installed on the carriage of the target train, and a second AP antenna is installed on the chassis of the target train. When the carriage and chassis of the target train are not separated, the signal strength of the second AP antenna is less than the minimum signal strength threshold. A low-position plate antenna is used to establish a second communication connection with the second AP antenna of the target train when the carriage and chassis are separated. Through the second communication connection, communication is established with the chassis of the target train based on another split radio frequency signal. The signal strength of the second AP antenna is not less than the minimum signal strength threshold when the carriage and chassis of the target train are separated. In this embodiment, the trackside AP antenna with carriage and chassis separation, through the high-position plate antenna and the low-position plate antenna, enables the trackside AP antenna to establish communication connections with both the carriage and chassis of the separated train. Communication with both the carriage and chassis is achieved through a 1-to-2 power divider and communication connections, simultaneously meeting the communication requirements in both whole-vehicle and separated scenarios.

[0090] based on Figure 1 or Figure 3 The present embodiment of the same inventive concept as the trackside AP antenna separated from the carriage chassis, provides a communication method based on... Figure 1 or Figure 3 The illustrated example shows a trackside AP antenna separated from the carriage chassis. Furthermore, the target train to which the method provided in this embodiment is applied is a train with carriages and chassis separated. A first AP antenna is installed on the carriage of the target train, and a second AP antenna is installed on the chassis of the target train.

[0091] See Figure 4 The communication method based on the trackside AP antenna separated from the carriage chassis provided in this embodiment is implemented as follows:

[0092] • When the carriage and chassis are not separated,

[0093] The power supply to the first AP antenna is controlled to enable the first AP antenna to operate, and the first AP antenna establishes a first communication connection with the high-position plate antenna of the trackside AP antenna.

[0094] Among them, see Figure 1 or Figure 3 The trackside AP antennas separated from the carriage chassis include: a high-position plate antenna, a low-position plate antenna, and a 1-to-2 power divider.

[0095] 1. One-to-two power divider

[0096] A 1-to-2 power divider is connected to the RF feed line of the trackside AP antenna to split the RF signal of the trackside AP antenna into two paths.

[0097] 2. High-position plate antenna

[0098] A high-positioned plate antenna is used to establish a first communication connection with the first AP antenna of the target train when the carriages and chassis of the target train are not separated. Through the first communication connection, communication is established with the carriages of the target train based on a branched-off radio frequency signal.

[0099] In addition, to ensure signal coverage, the high-mounted plate antenna is at the same height as the first AP antenna. In practice, the height of the high-mounted plate antenna can be the same as the height of the roof-mounted AP antenna.

[0100] 3. Low-position plate antenna

[0101] A low-positioned plate antenna is used to establish a second communication connection with the target train's second AP antenna when the target train's carriages are separated from the chassis. Through this second communication connection, communication with the target train's chassis is achieved based on a separate radio frequency signal.

[0102] In addition, to ensure signal coverage, the low-position plate antenna is at the same height as the second AP antenna. In practice, the installation height of the low-position plate antenna on the pole or tunnel wall is similar to the height of the AP antenna on the train chassis.

[0103] • When the carriage separates from the chassis,

[0104] Control the power supply of the second AP antenna to enable it to work, and establish a second communication connection between the second AP antenna and the low-position plate antenna of the trackside AP antenna.

[0105] In practical implementation, when the target train is initially powered on, it can be assumed that the carriages and chassis are not separated. At this time, the second AP antenna will be de-energized (the second AP antenna will not work after being de-energized), and the first AP antenna will be powered on (the first AP antenna will work after being powered on). In other words, when the target train is powered on, the AP antenna installed on the chassis is de-energized, while the AP antenna installed in the carriage is powered on.

[0106] In addition, when the vehicle body is separated from the chassis, besides controlling the power supply to the first AP antenna, the second AP antenna will also be de-energized to prevent it from working. That is, when the vehicle body is separated from the chassis, the AP antenna mounted on the chassis is de-energized, while the AP antenna mounted on the vehicle body is powered.

[0107] The above scheme ensures that only one AP antenna is powered at any given time (i.e., only one AP antenna is working). In this way, the powered AP antenna will establish a communication connection with the trackside AP antenna that is separated from the car chassis, and thus enable communication.

[0108] The communication process is as follows:

[0109] • When the carriage and chassis are not separated,

[0110] At this time, the first AP antenna is powered (i.e., the first AP antenna is working), while the second AP antenna is de-powered (i.e., the second AP antenna is not working). Then, the first AP antenna establishes a first communication connection with the high-position plate antenna of the trackside AP antenna.

[0111] Since the second AP antenna is de-energized (i.e., the second AP antenna is not working), the second AP antenna will not establish a second communication connection with the low-position plate antenna of the trackside AP antenna.

[0112] The target train and the trackside AP antenna will communicate based on the first communication connection.

[0113] • When the carriage separates from the chassis,

[0114] At this time, the second AP antenna is powered (i.e., the second AP antenna is working), while the first AP antenna is de-powered (i.e., the first AP antenna is not working). Then, the second AP antenna establishes a second communication connection with the low-position plate antenna of the trackside AP antenna.

[0115] Since the first AP antenna is powered off (i.e., the first AP antenna is not working), the first AP antenna will not establish a first communication connection with the high-position plate antenna of the trackside AP antenna.

[0116] The target train and the trackside AP antenna will communicate based on the second communication connection.

[0117] Because the radio frequency (RF) signal of the trackside AP antenna is split into two paths by a 1-to-2 power divider, the two resulting RF signals are identical. Furthermore, since one of the two RF signals is connected to a high-position plate antenna and the other to a low-position plate antenna, the RF signal from the trackside AP antenna communicates the same content with the target train through both antennas. This ensures that regardless of whether the target train's carriages and chassis are separated or not, one communication path is always functioning normally. Communication occurs only through one connection at a time, satisfying the communication requirements in both whole-vehicle and separated scenarios.

[0118] The communication method based on a trackside AP antenna separated from the vehicle chassis provided in this embodiment effectively avoids the need to install APs on both the vehicle and chassis simultaneously in scenarios where the vehicle and chassis are separated. WLAN is a Layer 2 network, and network storms can occur between onboard and trackside APs. The workflow of the communication method based on a trackside AP antenna separated from the vehicle chassis provided in this embodiment in practical applications is as follows:

[0119] 1) When the target train is powered on, the AP installed on the chassis is powered off by default, which causes the second AP antenna to be powered off.

[0120] 2) When the carriage and chassis are working together and operating normally, control the power supply of the AP installed in the carriage to power the first AP, while the AP installed in the chassis is powered off by default, thus powering off the second AP antenna.

[0121] 3) When the carriage is removed, control the power supply of the AP installed on the chassis to power the second AP antenna.

[0122] 4) After the carriage is reinstalled, the AP installed in the carriage is powered on again, so that the first AP is powered on, the AP installed on the chassis is powered off by default, so that the second AP antenna is powered off.

[0123] The development of subway trains with separate carriages and chassis is currently constrained by WLAN vehicle-to-ground communication. Traditional WLAN vehicle-to-ground communication is limited by previous product design and switching software algorithms under high-speed movement. The trackside APs and onboard APs of the WLAN system both use narrow-beam directional plate antennas with horizontal and vertical beam angles of only about 30 degrees. Once the design and construction are completed, they can only meet the vehicle-to-ground communication under the condition of the whole vehicle. If the carriage is separated from the chassis, since the height of the trackside AP antenna in the original design is similar to the height of the roof, the signal can only cover the roof area and cannot cover the APs on the chassis well. Especially when the train is running near the trackside AP antenna, the huge height difference and the narrow beam of the directional antenna will cause the trackside AP to be unable to cover the chassis AP, forming a communication blind spot. This will result in the inability to support continuous and smooth communication during the separation of carriage and chassis or when the chassis is running alone, which will cause problems for operation and maintenance and affect efficiency.

[0124] For the aforementioned scenario (i.e., the special train scenario where the carriages and chassis are separated), the communication method based on a trackside AP antenna with carriage and chassis separation provided in this embodiment supports continuous communication throughout the entire process from the whole vehicle – the separation of carriages and chassis – independent chassis operation – and the reassembly of carriages and chassis into a whole vehicle. In the communication method based on a trackside AP antenna with carriage and chassis separation provided in this embodiment, the power-divided dual-path RF structure of the antenna port of the trackside AP antenna with carriage and chassis separation meets the communication requirements of this special train scenario with carriages and chassis separation, and supports seamless vehicle-to-ground communication.

[0125] The communication method based on the trackside AP antenna separated from the carriage chassis provided in this embodiment has the following effects:

[0126] 1) It realizes the seamless connection of train operation - separation of carriage and chassis - independent operation of chassis - and combination of carriage and chassis into a whole vehicle, which improves operational efficiency and solves the technical bottleneck for future commercial use.

[0127] 2) Supports smooth and continuous vehicle-to-ground communication.

[0128] 3) Apply WLAN (including WiFi 6) technology to special trains with separate carriages and chassis, while ensuring communication throughput and reliability.

[0129] Based on the above, the communication method provided in this embodiment based on the trackside AP antenna with the carriage and chassis separated is for continuous vehicle-to-ground WLAN communication of subway trains with the carriage and chassis separated, so as to realize the special communication needs of future trains.

[0130] This embodiment provides a communication method based on a trackside AP antenna separated from the train car chassis. The trackside AP antenna involved in this method includes a high-position plate antenna, a low-position plate antenna, and a 1-to-2 power divider. The 1-to-2 power divider is connected to the RF feed line of the trackside AP antenna's antenna port, used to split the RF signal of the trackside AP antenna into two paths. The high-position plate antenna is used to establish a first communication connection with the first AP antenna of the target train when the train car and chassis are not separated. Through the first communication connection, communication is established with the train car based on the split RF signal. The target train is a train with its carriages and chassis separated. A first AP antenna is installed on the carriage of the target train, and a second AP antenna is installed on the chassis of the target train. When the carriages and chassis of the target train are not separated, the signal strength of the second AP antenna is less than a minimum signal strength threshold. A low-position plate antenna is used to establish a second communication connection with the second AP antenna of the target train when the carriages and chassis are separated. Through the second communication connection, communication is established with the chassis of the target train based on a split radio frequency signal. The signal strength of the second AP antenna is not less than the minimum signal strength threshold when the carriages and chassis of the target train are separated. This embodiment of the communication method based on a trackside AP antenna with separated carriages and chassis establishes communication connections between the carriages and chassis of the separated train and the high-position plate antenna and the low-position plate antenna of the trackside AP antenna, respectively. Communication with the carriages and chassis is achieved through a 1-to-2 power divider and communication connections, simultaneously meeting the communication requirements in both whole-vehicle and separated scenarios.

[0131] based on Figure 1 or Figure 3 The present embodiment of the same inventive concept as the trackside AP antenna separated from the carriage chassis, provides a communication method based on... Figure 1 or Figure 3 The illustrated example shows a trackside AP antenna with a separate carriage and chassis. The target train for which the method provided in this embodiment is applied is a train with a separate carriage and chassis. A first AP antenna is installed on the carriage of the target train, and a second AP antenna is installed on the chassis of the target train. The target train has routing functions for both the first and second AP antennas (such as OSPF (Open Shortest Path First) routing function).

[0132] See Figure 5 The communication method based on the trackside AP antenna separated from the carriage chassis provided in this embodiment is implemented as follows:

[0133] • When the carriage and chassis are not separated,

[0134] The routing function controls the operation of the first AP antenna, thereby controlling the first AP antenna to establish a first communication connection with the high-position plate antenna of the trackside AP antenna.

[0135] Among them, see Figure 1 or Figure 3 The trackside AP antennas separated from the carriage chassis include: a high-position plate antenna, a low-position plate antenna, and a 1-to-2 power divider.

[0136] 1. One-to-two power divider

[0137] A 1-to-2 power divider is connected to the RF feed line of the trackside AP antenna to split the RF signal of the trackside AP antenna into two paths.

[0138] 2. High-position plate antenna

[0139] A high-positioned plate antenna is used to establish a first communication connection with the first AP antenna of the target train when the carriages and chassis of the target train are not separated. Through the first communication connection, communication is established with the carriages of the target train based on a branched-off radio frequency signal.

[0140] In addition, to ensure signal coverage, the high-mounted plate antenna is at the same height as the first AP antenna. In practice, the height of the high-mounted plate antenna can be the same as the height of the roof-mounted AP antenna.

[0141] 3. Low-position plate antenna

[0142] A low-positioned plate antenna is used to establish a second communication connection with the target train's second AP antenna when the target train's carriages are separated from the chassis. Through this second communication connection, communication with the target train's chassis is achieved based on a separate radio frequency signal.

[0143] In addition, to ensure signal coverage, the low-position plate antenna is at the same height as the second AP antenna. In practice, the installation height of the low-position plate antenna on the pole or tunnel wall is similar to the height of the AP antenna on the train chassis.

[0144] • When the carriage separates from the chassis,

[0145] The second AP antenna is controlled by the routing function, thereby controlling the second AP antenna to establish a second communication connection with the low-position plate antenna of the trackside AP antenna.

[0146] In practical implementation, when the target train is initially powered on, it can be assumed that the carriages and chassis are not separated. At this time, the routing function will control the first AP antenna to work, while the second AP antenna will not work, thereby controlling the first AP antenna to establish a first communication connection with the high-position plate antenna of the trackside AP antenna. When the carriages and chassis are separated, the routing function will control the second AP antenna to work, while the first AP antenna will not work, thereby controlling the second AP antenna to establish a second communication connection with the low-position plate antenna of the trackside AP antenna.

[0147] The above scheme ensures that only one communication connection is established at any given time, and communication is carried out through this connection.

[0148] Because the radio frequency (RF) signal of the trackside AP antenna is split into two paths by a 1-to-2 power divider, the two resulting RF signals are identical. Furthermore, since one of the two RF signals is connected to a high-position plate antenna and the other to a low-position plate antenna, the RF signal from the trackside AP antenna communicates the same content with the target train through both antennas. This ensures that regardless of whether the target train's carriages and chassis are separated or not, one communication path is always functioning normally. Communication occurs only through one connection at a time, satisfying the communication requirements in both whole-vehicle and separated scenarios.

[0149] The communication method based on trackside AP antennas separated from the vehicle chassis provided in this embodiment uses OSPF routing to select routes between the on-board APs and the chassis APs. This implementation does not require power supply control for the APs, but it does require the on-board switch to support routing functions, which can be designed according to actual needs. Furthermore, this communication method effectively avoids the network storms caused by installing APs on both the vehicle and chassis in scenarios where the vehicle and chassis are separated, as WLAN is a Layer 2 network.

[0150] The development of subway trains with separate carriages and chassis is currently constrained by WLAN vehicle-to-ground communication. Traditional WLAN vehicle-to-ground communication is limited by previous product design and switching software algorithms under high-speed movement. The trackside APs and onboard APs of the WLAN system both use narrow-beam directional plate antennas with horizontal and vertical beam angles of only about 30 degrees. Once the design and construction are completed, they can only meet the vehicle-to-ground communication under the condition of the whole vehicle. If the carriage is separated from the chassis, since the height of the trackside AP antenna in the original design is similar to the height of the roof, the signal can only cover the roof area and cannot cover the APs on the chassis well. Especially when the train is running near the trackside AP antenna, the huge height difference and the narrow beam of the directional antenna will cause the trackside AP to be unable to cover the chassis AP, forming a communication blind spot. This will result in the inability to support continuous and smooth communication during the separation of carriage and chassis or when the chassis is running alone, which will cause problems for operation and maintenance and affect efficiency.

[0151] For the aforementioned scenario (i.e., the special train scenario where the carriages and chassis are separated), the communication method based on a trackside AP antenna with carriage and chassis separation provided in this embodiment supports continuous communication throughout the entire process from the whole vehicle – the separation of carriages and chassis – independent chassis operation – and the reassembly of carriages and chassis into a whole vehicle. In the communication method based on a trackside AP antenna with carriage and chassis separation provided in this embodiment, the power-divided dual-path RF structure of the antenna port of the trackside AP antenna with carriage and chassis separation meets the communication requirements of this special train scenario with carriages and chassis separation, and supports seamless vehicle-to-ground communication.

[0152] The communication method based on the trackside AP antenna separated from the carriage chassis provided in this embodiment has the following effects:

[0153] 1) It realizes the seamless connection of train operation - separation of carriage and chassis - independent operation of chassis - and combination of carriage and chassis into a whole vehicle, which improves operational efficiency and solves the technical bottleneck for future commercial use.

[0154] 2) Supports smooth and continuous vehicle-to-ground communication.

[0155] 3) Apply WLAN (including WiFi 6) technology to special trains with separate carriages and chassis, while ensuring communication throughput and reliability.

[0156] Based on the above, the communication method provided in this embodiment based on the trackside AP antenna with the carriage and chassis separated is for continuous vehicle-to-ground WLAN communication of subway trains with the carriage and chassis separated, so as to realize the special communication needs of future trains.

[0157] This embodiment provides a communication method based on a trackside AP antenna separated from the train car chassis. The trackside AP antenna involved in this method includes a high-position plate antenna, a low-position plate antenna, and a 1-to-2 power divider. The 1-to-2 power divider is connected to the RF feed line of the trackside AP antenna's antenna port, used to split the RF signal of the trackside AP antenna into two paths. The high-position plate antenna is used to establish a first communication connection with the first AP antenna of the target train when the train car and chassis are not separated. Through the first communication connection, communication is established with the train car based on the split RF signal. The target train is a train with its carriages and chassis separated. A first AP antenna is installed on the carriage of the target train, and a second AP antenna is installed on the chassis of the target train. When the carriages and chassis of the target train are not separated, the signal strength of the second AP antenna is less than a minimum signal strength threshold. A low-position plate antenna is used to establish a second communication connection with the second AP antenna of the target train when the carriages and chassis are separated. Through the second communication connection, communication is established with the chassis of the target train based on a split radio frequency signal. The signal strength of the second AP antenna is not less than the minimum signal strength threshold when the carriages and chassis of the target train are separated. This embodiment of the communication method based on a trackside AP antenna with separated carriages and chassis establishes communication connections between the carriages and chassis of the separated train and the high-position plate antenna and the low-position plate antenna of the trackside AP antenna, respectively. Communication with the carriages and chassis is achieved through a 1-to-2 power divider and communication connections, simultaneously meeting the communication requirements in both whole-vehicle and separated scenarios.

[0158] based on Figure 5 The communication method shown (this communication method is based on) Figure 1 or Figure 3 Using the same inventive concept as the trackside AP antenna with the carriage and chassis separated (as shown), this embodiment provides an electronic device located on a target train. The target train is a train with carriages and chassis separated. A first AP antenna is installed on the carriage of the target train, and a second AP antenna is installed on the chassis of the target train.

[0159] The electronic device is as follows Figure 7 As shown, it includes: a memory 701, a processor 702, and a computer program.

[0160] The computer program is stored in memory 701 and configured to be executed by processor 702 to implement the above. Figure 5 The communication method shown.

[0161] in Figure 5 The communication method shown and Figure 1 or Figure 3 The implementation details of the trackside AP antenna separated from the carriage chassis shown are described in the above embodiment and will not be detailed here.

[0162] The electronic device provided in this embodiment has a computer program executed by a processor to establish communication connections between the train carriage and chassis and the high-position plate antenna and the low-position plate antenna of the trackside AP antenna, respectively. It communicates with the carriage and chassis through a 1-to-2 power divider and communication connections, which can simultaneously meet the communication requirements in both whole-vehicle and separated scenarios.

[0163] based on Figure 6 The communication method shown (this communication method is based on) Figure 1 or Figure 3 Using the same inventive concept as the trackside AP antenna with the carriage and chassis separated (as shown), this embodiment provides an electronic device located on a target train. The target train is a train with carriages and chassis separated. A first AP antenna is installed on the carriage of the target train, and a second AP antenna is installed on the chassis of the target train. The target train has routing functions for the first AP antenna and the second AP antenna (such as OSPF (Open Shortest Path First) routing function).

[0164] The electronic device is as follows Figure 8 As shown, it includes: a memory 801, a processor 802, and a computer program.

[0165] The computer program is stored in memory 801 and configured to be executed by processor 802 to implement the above. Figure 6 The communication method shown.

[0166] in Figure 6 The communication method shown and Figure 1 or Figure 3 The implementation details of the trackside AP antenna separated from the carriage chassis shown are described in the above embodiment and will not be detailed here.

[0167] The electronic device provided in this embodiment has a computer program executed by a processor to establish communication connections between the train carriage and chassis and the high-position plate antenna and the low-position plate antenna of the trackside AP antenna, respectively. It communicates with the carriage and chassis through a 1-to-2 power divider and communication connections, which can simultaneously meet the communication requirements in both whole-vehicle and separated scenarios.

[0168] based on Figure 5 The communication method shown (this communication method is based on) Figure 1 or Figure 3 The same inventive concept as the trackside AP antenna separated from the carriage chassis shown in this embodiment provides a computer-readable storage medium.

[0169] The computer-readable storage medium is located on the target train, which is a train with separate carriages and chassis. The first AP antenna is installed on the carriages of the target train, and the second AP antenna is installed on the chassis of the target train.

[0170] The computer-readable storage medium contains a computer program. The computer program is executed by a processor to perform the above-described tasks. Figure 5 The communication method shown.

[0171] in Figure 5 The communication method shown and Figure 1 or Figure 3 The implementation details of the trackside AP antenna separated from the carriage chassis shown are described in the above embodiment and will not be detailed here.

[0172] The computer-readable storage medium provided in this embodiment has a computer program thereon that is executed by a processor to establish communication connections between the train carriages and chassis via the carriage chassis and the high-position plate antenna and the low-position plate antenna of the trackside AP antenna, respectively. Through a 1-to-2 power divider and communication connections, it communicates with the carriages and chassis, respectively, which can simultaneously meet the communication requirements in both whole-vehicle scenarios and separation scenarios.

[0173] based on Figure 6 The communication method shown (this communication method is based on) Figure 1 or Figure 3 The same inventive concept as the trackside AP antenna separated from the carriage chassis shown in this embodiment provides a computer-readable storage medium.

[0174] The computer-readable storage medium is located on the target train, which is a train with separate carriages and chassis. The first AP antenna is installed on the carriages of the target train, and the second AP antenna is installed on the chassis of the target train. The target train has routing functions for the first AP antenna and the second AP antenna (such as OSPF (Open Shortest Path First) routing function).

[0175] The computer-readable storage medium contains a computer program. The computer program is executed by a processor to perform the above-described tasks. Figure 6 The communication method shown.

[0176] in Figure 6 The communication method shown and Figure 1 or Figure 3 The implementation details of the trackside AP antenna separated from the carriage chassis shown are described in the above embodiment and will not be detailed here.

[0177] The computer-readable storage medium provided in this embodiment has a computer program thereon that is executed by a processor to establish communication connections between the train carriages and chassis via the carriage chassis and the high-position plate antenna and the low-position plate antenna of the trackside AP antenna, respectively. Through a 1-to-2 power divider and communication connections, it communicates with the carriages and chassis, respectively, which can simultaneously meet the communication requirements in both whole-vehicle scenarios and separation scenarios.

[0178] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The solutions in the embodiments of this application can be implemented in various computer languages, such as the object-oriented programming language Java and the interpreted scripting language JavaScript.

[0179] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0180] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0181] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1The steps of the function specified in one or more boxes.

[0182] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0183] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0184] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A trackside AP antenna separated from the carriage chassis, characterized in that, The trackside AP antenna includes: a high-position plate antenna, a low-position plate antenna, and a 1-to-2 power divider; The 1-to-2 power divider is connected to the RF feed line of the antenna port of the trackside AP antenna, and is used to split the RF signal of the trackside AP antenna into two paths. The high-position plate antenna is used to establish a first communication connection with the first AP antenna of the target train; through the first communication connection, it communicates with the carriage of the target train based on a branched radio frequency signal; the target train is a train with carriages and chassis separated, the first AP antenna is installed on the carriage of the target train, and a second AP antenna is installed on the chassis of the target train; The low-position plate antenna is used to establish a second communication connection with the second AP antenna of the target train; through the second communication connection, it communicates with the chassis of the target train based on another branched radio frequency signal; When the carriage and chassis of the target train are not separated, the trackside AP antenna communicates with the carriage of the target train through the first communication connection only through the high-position plate antenna, based on a branched radio frequency signal. When the carriage and chassis of the target train are separated, only the low-position plate antenna communicates with the chassis of the target train through the second communication connection based on the other branched radio frequency signal.

2. The trackside AP antenna according to claim 1, characterized in that, The high-position plate antenna is at the same height as the first AP antenna; The low-position plate antenna is at the same height as the second AP antenna.

3. A communication method based on a trackside AP antenna separated from the carriage chassis as described in claim 1 or 2, characterized in that, The target train to which the method is applied is a train with separate carriages and chassis. The carriages of the target train are equipped with a first AP antenna, and the chassis of the target train is equipped with a second AP antenna. The method includes: When the carriage and chassis are not separated, control the power supply of the first AP antenna so that the first AP antenna can establish a first communication connection with the high-position plate antenna of the trackside AP antenna. When the carriage is separated from the chassis, the power supply to the second AP antenna is controlled so that the second AP antenna establishes a second communication connection with the low-position plate antenna of the trackside AP antenna.

4. The method according to claim 3, characterized in that, When the target train is powered on, the second AP antenna is powered off. When the carriage and chassis are not separated, the method further includes: Power off the second AP antenna.

5. A communication method based on a trackside AP antenna separated from the carriage chassis as described in claim 1 or 2, characterized in that, The target train to which the method is applied is a train with a carriage and chassis separated. The carriage of the target train is equipped with a first AP antenna, the chassis of the target train is equipped with a second AP antenna, and the target train has routing functions for the first AP antenna and the second AP antenna. The method includes: When the carriage and chassis are not separated, the routing function controls the first AP antenna to establish a first communication connection with the high-position plate antenna of the trackside AP antenna. When the carriage is separated from the chassis, the routing function controls the second AP antenna to establish a second communication connection with the low-position plate antenna of the trackside AP antenna.

6. An electronic device, characterized in that, The electronic device is located on the target train, which is a train with separate carriages and chassis. A first AP antenna is installed on the carriages of the target train, and a second AP antenna is installed on the chassis of the target train. The electronic device includes: Memory; Processor; and Computer programs; The computer program is stored in the memory and configured to be executed by the processor to implement the method as described in claim 3 or 4.

7. An electronic device, characterized in that, The electronic device is located on the target train, which is a train with separate carriages and chassis. A first AP antenna is installed on the carriages of the target train, and a second AP antenna is installed on the chassis of the target train. The target train has routing functions for the first AP antenna and the second AP antenna. The electronic device includes: Memory; Processor; and Computer programs; The computer program is stored in the memory and configured to be executed by the processor to implement the method as described in claim 5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium is located on the target train, which is a train with separate carriages and chassis. A first AP antenna is installed on the carriages of the target train, and a second AP antenna is installed on the chassis of the target train. The computer-readable storage medium stores a computer program; the computer program is executed by a processor to implement the method as described in claim 3 or 4.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium is located on the target train, a first AP antenna is installed on the carriage of the target train, a second AP antenna is installed on the chassis of the target train, and the target train has routing functions for the first AP antenna and the second AP antenna. The computer-readable storage medium stores a computer program; the computer program is executed by a processor to implement the method as described in claim 5.

Images