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Integration of RF, optoelectronic, embedded, automation and software technologies to provide dedicated equipment and solutions
5G rail transit, supporting the development of smart city rail.
Release time:
2023-10-27 17:30
Source:
5G Rail Transit Background
At present, the operating mileage of urban rail transit in China ranks first in the world, and the number of cities and the length of lines that have built rail transit are in the forefront of the world. However, with the slowdown in the pace of urban rail transit construction, the pressure on the operation and maintenance management of existing lines is increasing. During the "14th Five-Year Plan" period, the focus of urban rail transit work has gradually shifted from construction to a stage of transformation and development with equal emphasis on operation and management.
The smart urban rail represented by 5G is the trend of the development of a new generation of urban rail transit. It is a new urban rail transit based on more safety, efficiency and greening.
Development Demand and Pain Points of Rail Transit Vehicle-to-ground Communication
Through the investigation of a number of integrated rail transit industry construction and operation companies in China, the demand and pain points of the wireless communication network are as follows:
1) At present, the wireless bandwidth of the self-built private network of the subway is insufficient, which leads to the difficulty of real-time video transmission;
2) Insufficient wireless bandwidth makes emergency communication difficult;
3) The communication mode of intelligent train state sensor is backward;
4) Safety patrol inspection of tunnel track area of urban rail at night;
5) Demand for passengers to enter the station by brushing codes during large passenger flow;
6) ......
5G Rail Transit Application Scenarios
With its unique technical advantages, such as large bandwidth, low latency, slicing, 5G positioning, Redcap, and other features, 5G technology can match the needs of rail transit in different scenarios such as operation management, equipment maintenance, and passenger service, for exampleReal-time return of on-board data such as PIS passenger information system and CCTV system; real-time monitoring of on-board operation status, robot inspection and trunking communication servicesWait.
5G vehicle antenna feeder connection system scheme and products
The system is mainly composed of on-board antenna feeder system, ground core network and transmission unit, as shown in the following figure.
5G vehicle-ground wireless communication topology diagram
Our company mainly around the 5G vehicle antenna feeder system, to provide a complete product solution, 5G vehicle antenna feeder system is mainly composed5G On-board TAU(T515),5G Feeder (SPUMA_400-FR-01),5G all-in-one antenna (AC65A) and user self-management platform (AumiCloud)Composition.
5G On-board TAU(T515)To meet the domestic three major operators 5G public network access, with the characteristics of large up and down rate. deployed at the front and rear of the train, providingTrain operation status monitoring, PIS, CCTV and other systems provide data access services.Support 5G full netcom and public network access, optional support LTE-M, WIFI6 and other features.,4 GE ports, dual SIM cards, eSIM support,The use of standard 1U chassis shape, can be directly installed in the standard cabinet,Compliance with EN50155Design requirements of relevant standards;
5G Feeder采用HUBER SUNERSPUMA_400-FR-01 model,Super soft, flame retardant, low loss <0.3dB/m,Compliance with relevant national and international standards;
5G All-in-One Fin Antenna (AC65A)Built-in 4 5G full-band antennas and 1 GPS/BD antenna,At the same time, it is completely consistent with the installation method of 4G LTE-M antennaTo help integrators and vehicles achieve fast 4G/5G switching.
User self-management platform (AumiCloud)supportableEnd-to-end monitoring capabilities at the business connection levelIt can monitor traffic, rate, delay, packet loss rate, jitter and other network indicators in real time.intelligent monitoringAbility to support the intelligent demarcation of business connection interruption faults and business connection quality faults, with the ability to quickly locate problems.
Program Advantages
1) This TAU can support 4G LTE-M private network (optional),5G public private network and WIFI6 (optional) network at the same time, with a wide range of applications;
2)AC65A fin antenna can support 4G/5G/WIFI and other frequency bands at the same time, reducing the number of antennas used;
3) Fully compatible with the existing TAU and antenna installation, smooth evolution;
4)TAU is directly connected to the all-in-one fin antenna, and low-loss feeder is used in the middle to reduce line attenuation.
5) User self-management platform to help users realize 5G network, 5G terminal and business intelligent demarcation, intelligent operation and maintenance.
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5G rail transit, supporting the development of smart city rail.
At present, the operating mileage of urban rail transit in China ranks first in the world, and the number of cities and the length of lines that have built rail transit are in the forefront of the world. However, with the slowdown in the pace of urban rail transit construction, the pressure on the operation and maintenance management of existing lines is increasing. During the "14th Five-Year Plan" period, the focus of urban rail transit work has gradually shifted from construction to a stage of transformation and development with equal emphasis on operation and management.
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