Abstract
Communications-Based Train Control (CBTC) is a modern signalling system that uses radio communication to transfer train control information between train and wayside. The trackside networks in these systems are mostly based on conventional infrastructure Wi-Fi (IEEE 802.11). It means a train has to continuously associate (i.e. perform handshake) with the trackside Wi-Fi Access Points (AP) as it moves, which incurs communication delays. Additionally, these APs are connected to the wayside infrastructure via optical fiber cables that incurs huge costs. This paper presents a novel design in which trackside nodes function in ad-hoc Wi-Fi mode, which means no association has to be performed with them prior to transmitting. A node upon receiving packets from a train forwards these packets to the next node, forming a chain of nodes. Following this chain, packets arrive at the destination. To make the design resilient against interference and failures, transmissions are separated on multiple frequencies and a node forwards packets to not only one but two of its neighbors. This paper investigates the resiliency, redundancy and scalability performance of this design and presents the results both from a field experiment involving prototype hardware and an extensive simulation study.
Original language | English |
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Title of host publication | Proceedings of IEEE Vehicular Technology Conference-Fall 2017 |
Number of pages | 7 |
Publisher | IEEE |
Publication date | 2018 |
DOIs | |
Publication status | Published - 2018 |
Event | 2017 IEEE 86th Vehicular Technology Conference - Hilton Toronto, Toronto, Canada Duration: 24 Sept 2017 → 27 Sept 2017 |
Conference
Conference | 2017 IEEE 86th Vehicular Technology Conference |
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Location | Hilton Toronto |
Country/Territory | Canada |
City | Toronto |
Period | 24/09/2017 → 27/09/2017 |
Keywords
- Railway signalling
- CBTC
- Radio communication
- Wi-Fi
- IEEE 802.11
- ad-hoc
- Multi-radio
- Multi-hop