Abstract
The link is easy to break due to the high mobility of nodes and the constraint of road in a VANET. In this paper, we present an efficient traffic geographic routing (ETGR) with static node assistance. It includes road information collection, road weight information dissemination, the efficient traffic geographic routing and the duration estimation of the path. Each static node stores the information of other static nodes in the path for a given time. The static nodes are fixed in each intersection. The method takes static nodes as backbone nodes and vehicles as the relay nodes between two static nodes, which can survive the path for a period of time. The ETGR selects the static nodes dynamically and sequentially. The static nodes are chosen considering such parameters as the remaining distance to the destination, vehicular density, vehicular speed, etc. Route request packets forwarding between two static nodes adopts a greedy mechanism. Simulation results show performance improvement comparing with the performance of other existing routing approaches
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