Performance Analysis of Angular Geographic Distance Based Routing for Vehicular Ad Hoc Networks in Urban Environment

In vehicular ad hoc network, routing has become a critical issue in vehicle-to-vehicle communication. Therefore, there are several routing algorithms, which utilize topology information to make routing decisions at each node. We have proposed Angular GEographic DIstance-based Routing (A-GEDIR) protocol for packets transmission in high density urban area. In our protocol, a source node computes the next hop in the region bounded by the tangents drawn from the expected zone to the destination. Further, the next hop is chosen from the nodes available in the bounded region on the basis of maximum progress. In this strategy to attain maximum progress, the node having minimum angle is selected as the next hop to forward the packets towards the destination. The performance of the proposed routing protocol is analyzed in terms of the expected number of successful hops, probability of successful transmission and expected distance to the next-hop node. Keywords—Vehicular ad-hoc networks, position-based routing, angular geographic distance-based routing, expected zone, urban environment.