GPSR: Greedy Perimeter Stateless Routing for Wireless Networks
HARVARD UNIV BOSTON MA
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We present Greedy Perimeter Stateless Routing GPSR, a novel routing protocol for wireless datagram networks that used the positions of routers and a packets destination to make packet forwarding decisions, GPSR makes greedy forwarding decisions using only information about a routers immediate neighbors in the network topology. When a packet reaches a region where greedy forwarding is impossible, the algorithm recovers by routing around the perimeter of the region. By keeping state only about the local topology, GPSR scales better in per-router state than shortest-path and ad-hoc routing protocols as the number of network destinations increases. Under mobilitys frequent topology changes, GPSR can use local topology information to find correct new routes quickly. We describe the GPSR protocol, and use extensive simulation of mobile wireless networks to compare its performance with that of Dynamic source Routing. Our simulations demonstrate GPSRs scalability on densely deployed wireless networks.
- Computer Programming and Software
- Computer Systems
- Radio Communications