LTE-based subway double-network networking method

Abstract

The invention discloses an LTE-based subway double-network networking method. The networking method comprises steps of: arranging two networks in a subway system, wherein the two networks are networks with independent frequency points; arranging vehicle-mounted wireless devices on the vehicle head and the vehicle tail of train; accessing the vehicle-mounted wireless devices in one of the networks, and connecting the vehicle-mounted wireless devices to a communication-based train control (CBTC) device; and transmitting CBTC signals between the network to which one of the vehicle-mounted wireless device is accessed and the CBTC device through the vehicle-mounted wireless device, and transmitting the CBTC signal and a passenger information system (IPS) signal between the network to which the other one of the vehicle-mounted wireless device is accessed and the CBTC device through the vehicle-mounted wireless device. By use of the technical scheme provided by the invention, reliable transmission of CBTC services can be achieved and the network sharing problem of the CBTC and the TIS is solved.

Description

technical field [0001] The present application relates to the technical field of mobile communication, in particular to an LTE-based subway dual-network networking method. Background technique [0002] Communication-Based Train Control (CBTC system for short) is a train operation control system that supports moving blocks. It is an automatic control system for continuous data transmission. It uses high-precision train positioning to achieve two-way continuous, large-capacity The vehicle-to-ground communication can perform functions such as automatic train protection, automatic train operation and automatic train monitoring. It is not only suitable for all kinds of new urban rail transit, but also suitable for the reconstruction of old lines, different formations and cross-line operations of different lines. In recent years, with the development of communication technology, especially the rapid development of wireless communication, computer network technology and digital si...

AI Technical Summary

Problems solved by technology

[0003] At present, the CBTC network is mainly undertaken by the WIFI network, but the following reasons make WIFI more and more restricted in the CBTC signal bearing of the subway:

[0004] 1. The frequency band used by WIFI is an open frequency band, which is susceptible to interference, which leads to poor stability of CBTC signal application;

[0005] 2. The coverage distance of WIFI is short, the number of stations is large, maintenance is difficult, and the cost is high;

[0006] 3. Unable to support speeds exceeding 80 km / h

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