Light-trains: An integrated optical-wireless solution for high bandwidth applications in high-speed metro-trains

Moving trains represent a voluminous mass of users moving at high velocities that require bandwidth (on demand). A new solution is proposed that facilitates dynamic provisioning, good scalability and efficient use of available bandwidth. The proposed solution (light-trains) seamlessly integrates optical and wireless networking to provide broadband access to users in moving trains. The solution identifies the set of requirements - such as fast hand-off, low-cost of deployment, mature technology and ability to provide dynamic bandwidth provisioning. A protocol that enables end-to-end provisioning across the three domains of technology aka light-trails, WiMax and WiFi is also proposed. The proposed protocol is a cornerstone mechanism for providing inter-domain (technology) connectivity in a pragmatic way. Different aspects of the protocol are considered, amongst which delay and efficiency are analyzed and computed. The protocol and system requirements juxtaposed are simulated extensively. Results pertaining to utilization, delay, efficiency and network wide performance are all showcased. Viability of the model in being able to provide bandwidth to moving users is shown.