Train Topology Discovery Protocol for Train Inauguration over Wireless Ethernet Train Backbone

초록

With recent rapid advances in wireless communication technology, wireless network has gained increasing interest as a train backbone for providing passenger service, as well as real-time control functions. To use the wireless network as a train backbone, however, the existing standard protocol, IEC Std. 61375 Train Communication Network (TCN), needs to be modified to reflect the wireless-specific characteristics because it was originally designed for the wired network. The train topology discovery protocol (TTDP) provides automatic network reconfiguration. This paper proposes a modified topology discovery protocol that could be used for a train-wide wireless LAN. Proposed protocol finds the bus topology based on the radio signal strength (RSS) and the number of received HELLO-ACK handshake frames. And the proposed protocol can avoid interferences by controlling radio transmission power. The performance of the proposed protocol is simulated and estimated by NS-2.