Indonesia Conference Directory

The development of public transportation, especially for large urban areas, is mandatory where the need for time efficiency and integrated mass transportation to provide optimal services to customers. Trains in Indonesia generally use traditional signaling systems while currently several countries have developed the use of communication-based train control (CBTC). This system is an automatic rail control system using two-way communication between the train and the control station to ensure safe railroad operation, improve comfort and utilize the railroad network infrastructure. Communication-based train control (CBTC) is a modern technology using moving blocks replacing traditional signaling systems that use interlocking, track circuits and signals. CBTC generally uses WLAN communication based on IEEE 802.11 local area network. The use of WLAN is more effective for large scale systems compared to the use of CBTC ground track signaling. The use of WLAN has problems with interference from other devices that work on the same frequency that is 2.4 GHz such as Bluetooth, Mobile devices and others. This interference will affect the communication between the train and the control station. These constraints can be overcome by using Message Queue Telemetry Transprort where in the MQTT there is a rebility feature of Quality of Service messages that ensures messages are received by subscribers. This study analyzes the use of the MQTT protocol for communication between trains and control stations with a low message loss rate.