ETCS Backup Device Redirects Connection Attempts
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Solution Overview
Problem
In railway systems with ETCS train control, when an ETCS route center is not ready for use, ETCS vehicles repeatedly attempt to connect, leading to mobile network overload and other issues, as they try to contact unresponsive route centers, especially during transition periods like new route installations or retrofits.
Innovation Solution
A method and device that redirect the ETCS vehicle's connection attempt to a replacement facility, which authenticates and establishes a connection with the vehicle, eliminating the need for trackside changes and preventing repeated attempts, thus avoiding network overload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ETCS vehicles repeatedly attempt to connect to a non-operational ETCS track control center, then connection establishment is attempted, but mobile network overload occurs
Solution Approach 1:
A redirection device is introduced as an intermediary between the ETCS vehicle and the non-operational track control center. This device receives connection attempts from vehicles and redirects them to operational track control centers, preventing direct repeated attempts to the non-operational center and thereby avoiding mobile network overload while maintaining connection reliability.
2Object-generated harmful factors
If beacons are fitted with shielding covers to prevent data telegram transmission, then connection attempts to non-operational centers are prevented, but considerable installation effort is required
Solution Approach 1:
Instead of modifying beacons with shielding covers, a redirection device is deployed as an intermediary that handles the redirection of connection attempts. This approach eliminates the need for physical trackside modifications to beacons while achieving the same effect of preventing harmful connection attempts to non-operational centers.
Solution Approach 2:
The mechanical/physical solution of installing shielding covers on beacons is replaced with a communication-based solution using a redirection device. This substitution eliminates the need for physical trackside modifications and uses network-based redirection to achieve the desired outcome.
3Reliability
If ETCS vehicles continuously retry connection to unresponsive track control center, then connection establishment is pursued, but significant unplanned load on mobile network is generated
Solution Approach 1:
The redirection device acts as a mediator that intercepts connection attempts before they reach the non-operational track control center. By redirecting these attempts to operational centers, the device prevents the continuous retry cycle that would otherwise consume significant mobile network resources, while still ensuring connection establishment through the operational center.
Data Source
AI summary
The invention relates to a method for ETCS train control in a railway installation (1) with at least one ETCS trackside control center (3) assigned to at least one track section but not operational, in which at least one ETCS vehicle (2) makes at least one attempt to establish a connection with the not operational ETCS trackside control center (3), in which the attempt is redirected to at least one backup device (4), and in which the backup device (4) receives the attempt instead of the not operational ETCS trackside control center (3) and a connection is established with the ETCS vehicle (2). The method according to the invention prevents an overload of a mobile communication network (11). The invention also relates to a backup device (4) for at least one not operational ETCS trackside control center (3).