Title :
Seamless Connectivity and Routing in Vehicular Networks with Infrastructure
Author :
Annese, Stefano ; Casetti, Claudio ; Chiasserini, Carla-Fabiana ; Di Maio, Nazario ; Ghittino, Andrea ; Reineri, Massimo
Author_Institution :
CSP, ICT Innovation, Torino, Italy
fDate :
3/1/2011 12:00:00 AM
Abstract :
The provision of UDP-based multimedia streams to vehicular users through a roadside wireless mesh network requires a fast-switching, robust protocol architecture. We consider vehicles (e.g., cars, buses or streetcars) that connect to different roadside mesh nodes as they move in an urban environment, and study the joint problem of traffic delivery and connectivity management in such scenario. We identify BATMAN as a candidate layer-2 implementation of a routing protocol for vehicular networks, and we use simulation to compare its performance with other routing protocols for wireless ad hoc and mesh networks. Since BATMAN shows some inconsistencies in its behavior, we propose an improved version of the protocol, named smart-window BATMAN (sw-BATMAN). Then, we design two testbeds that include both roadside and vehicular mesh nodes. There, we implement the selected routing solution along with a handover mechanism that, by leveraging a channel selection scheme, allows vehicles to connect to the different roadside mesh nodes in a seamless manner. The performance assessment on our testbeds shows the efficiency of the proposed solution and highlights that our traffic routing and connectivity management are suitable for sustaining the handover of UDP streams in a vehicular environment, in a seamless manner.
Keywords :
multimedia communication; routing protocols; telecommunication traffic; transport protocols; vehicular ad hoc networks; BATMAN; UDP streams; UDP-based multimedia streams; connectivity management; infrastructure; robust protocol architecture; routing protocols; seamless connectivity; seamless routing; smart-window BATMAN; traffic delivery; vehicular mesh nodes; vehicular networks; Mesh networks; Mobile communication; Routing; Routing protocols; Vehicles; Wireless communication; Handover; channel selection; traffic routing; vehicular-to-infrastructure communications;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
DOI :
10.1109/JSAC.2011.110302