Cross-Operator Train Handover Reservation for Route Transitions
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Solution Overview
Problem
In a train control system using wireless communication, handover between different railway operators' routes is unreliable due to differing wireless communication systems, preventing trains from entering routes managed by other companies.
Innovation Solution
A train control system with inter-connected ground control devices and wireless base stations across adjacent routes managed by different railway operators, enabling coordinated handover reservations and mode switching to ensure seamless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple ground wireless base stations are installed along the railroad line for handover, then coverage area is improved, but compatibility with other railway operators' systems deteriorates
Solution Approach 1:
The ground control device performs handover reservation in advance between wireless base stations before the train actually needs to handover. This preliminary action ensures that the handover path is pre-established and compatible with both the current and destination railway operators' systems, resolving the compatibility issue while maintaining coverage.
Solution Approach 2:
The ground control device acts as an intermediary that coordinates handover reservations between multiple wireless base stations belonging to different railway operators. It manages the handover process centrally, ensuring compatibility across different systems by mediating the communication and reservation between base stations.
2Adaptability or versatility
If handover is performed between wireless base stations of different railway operators, then route accessibility is improved, but handover reliability deteriorates due to different communication systems
Solution Approach 1:
The system performs handover reservation in advance between all wireless base stations along the intended route, including those of different railway operators. This preliminary reservation ensures that compatibility and reliability are verified before actual handover occurs, enabling reliable cross-operator handover.
Solution Approach 2:
The ground control device receives feedback from wireless base stations regarding handover reservation status and uses this information to determine whether the train can proceed. This feedback mechanism ensures that handover reliability is maintained by confirming successful reservations before allowing route transitions.
3Adaptability or versatility
If the train enters a route of another company with different wireless communication system, then route versatility is improved, but handover success rate deteriorates
Solution Approach 1:
The ground control device performs handover reservation in advance with wireless base stations of other railway operators before the train enters their route. This preliminary action ensures that the handover path is pre-established and compatible, improving handover success rate while maintaining route versatility.
Solution Approach 2:
The ground control device implements a universal handover reservation mechanism that works across different railway operators' wireless communication systems. It manages handovers between multiple base stations with different communication protocols, achieving both route versatility and reliable handover.
Data Source
AI summary
A train control system includes a ground control device installed on a first route; a wireless base station connected to the ground control device; a ground control device installed on a second route that is adjacent to the first route; and a wireless base station connected to the ground control device. The ground control device performs handover reservation between with all the wireless base stations installed between a first station installed on the first route and a second station that is installed on the second route and is adjacent to the first station, and the ground control device transmits, to the ground control device, a handover reservation request between with all the wireless base stations disposed between the first station and the second station. The ground control device transmits, to the ground control device, a result of the handover reservation request between with all the wireless base stations.