Multi-Radio Access Technology Handover Decision Mechanism for Nested Network Mobility on Bangkok Mass Transit Train
Titikorn Tantawutho, Aphirak Jansang, Anan Phonphoem · 2017
In the big city like Bangkok, Bangkok Mass Transit System (BTS) or Skytrain is one of the most popular choices for commuting due to the traffic condition. Currently, BTS passengers use smartphone while traveling. Most users have to pay for the Internet data package subscription such as Long-term evolution (LTE). Passengers might experience signal degradation or lost. Most previous works are concentrated on improving the handover mechanism for train Intra-Radio Access Technology (Intra-RAT) by using location, speed, signal strength and distance. In this research, the multi-RAT handover decision mechanism with signal strength with WiFi priority has been proposed. By installing WiFi access point on each coach and all stations, the mobile router (MR) installed on the coach becomes the gateway to the Internet. The experimental results show that the proposed mechanism has lower inter-packet time, especially during the WiFi connection with small number of packet loss.