An Optimal Method for Ping-Pong Handover in a Communication-Based Train Control System

Abstract

The invention discloses a train control system ping-pong switching optimization method based on communication. The method comprises the steps of, when a mobile terminal accesses a base station to which a first cell belongs, establishing a mapping relation according to information of the mobile terminal for identifying the mobile terminal; switching the base station to which the first cell belongsto a base station to which a second cell belongs, and establishing the mapping relation according to the information of the mobile terminal for identifying the mobile terminal, wherein the two base stations store current switching information; starting a switching historical information validity check cycle timer, and processing the switching information through a validity check result; switchingthe mobile terminal from the base station to which the first cell belongs to the base station to which the second cell belongs, and performing anti-ping-pong switching processing according to an anti-ping-pong switching penalty timer and the switching information of the base station to which the second cell belongs; and switching the mobile terminal to the base station to which the first cell belongs to the base station to which the second cell belongs, and performing anti-ping-pong switching processing according to the anti-ping-pong switching penalty timer and the switching information of the base station to which the first cell belongs.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a communication-based optimization method for ping-pong switching of a train control system. Background technique [0002] The conventional Communication Based Train Control System (CBTC) system is implemented based on WIFI technology. Due to the characteristics of WIFI technology and the lack of dedicated wireless resources, it shares wireless resources with more civilian wireless communications, often resulting in relatively big distraction. Due to its particularity, the CBTC system requires wireless communication to ensure high communication indicators and reliability. If these requirements are based on WLAN technology, it will be difficult to achieve, and there have been many accidents such as train outages caused by conventional CBTC systems due to signal interference and other reasons. . [0003] For the above reasons, a new CBTC system based on LTE technol...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that the mobile terminal of the train control system cannot be switched in time caused by the conventional method of preventing ping-pong switching, a wireless link failure problem is proposed, and a communication-based optimization method for the ping-pong switching of the train control system is proposed. The technology adopted in the present invention The scheme is:

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