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Geo-Opportunistic Routing for Vehicular Networks


Road topology information has been recently used to assist geographic routing in urban vehicular environments to improve the overall routing performance. However, the unreliable nature of wireless channels due to motion and obstructions still makes road topology assisted geographic routing challenging. In this article, we begin by reviewing conventional road topology assisted geographic routing protocols and investigate the robust routing protocols that address and help overcome the unreliable wireless channels. We then present TOpology-assisted Geo-Opportunistic routing (TO-GO) that incorporates topology assisted geographic routing with opportunistic forwarding. That is, the routing protocol exploits the simultaneous packet receptions induced by the broadcast nature of wireless medium and performs opportunistic forwarding via a subset of the neighbors that have received the packet correctly. Our simulation results confirm TO-GO’s superior robustness to channel errors and collisions as compared to conventional topology-assisted geographic routing protocols.

Paper: PDF file of paper

Information & Date

IEEE Communications Magazine, , May. 2010


Kevin C. Lee
Uichin Lee
Mario Gerla