Broadband communication network architecture with shared control and service network for train and communication method

Abstract

The invention discloses a broadband communication network architecture with a shared control and service network for a train. The architecture comprises a trusted network and an untrusted network, wherein the trusted network comprises a trusted vehicle-level network element arranged in each vehicle, and except for the trusted vehicle-level network elements, trusted train-level network elements are respectively arranged in the head train and the trail train; the untrusted network comprises untrusted train-level network elements respectively arranged in the head train and the trail train; one trusted train-level network element communicates with one untrusted train-level network element through a security gateway, and the security gateways are mutually redundant. The network architecture provided by the invention is the network architecture with the shared train control and service network for the train, transmission of the train control, monitoring and diagnosis information, passenger information and video information on the shared network and transmission of a passenger information service system network and a train network on the shared network are realized, so that the requirements for the network bandwidth of the passenger information service system network are met and the stability of the train network is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of train network communication, and relates to a communication network architecture, in particular to a broadband communication network architecture for train control and service shared network, and a train communication method using the architecture. Background technique [0002] Train communication network can be divided into train control network and train service network. The main function of the train control network is to control the on-board equipment scattered in each vehicle of the train, so that they can work together, share information, and realize the fault detection and maintenance of the on-board equipment; the main function of the train service network is to provide train-related staff and passengers with Information services, vehicle-to-ground communication and other functions. [0003] In the prior art, the train communication network has the following problems: [0004] (1) Most of the tr...

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Problems solved by technology

[0005] (2) The train control network adopts MVB, CAN, HDLC and other control buses. With the rapid increase of the data volume of train communication, the real-time control communication can be guaranteed, but the communication of large data volume cannot be satisfied;

[0006] (3) On the trains that provide WIFI wireless Internet access services, there is a plan to use the control network and the service network to share the network, but due to the lack of security measures, there is no strategy to ensure the security of the train network communication;

[0007] (4) In the design of the Ethernet application rail vehicle communication network architecture, the transmission distance and transmission quality of the twisted pair become the bottleneck of the solution

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