Path Vector Face Routing: Geographic Routing with Local Face Information

Existing geographic routing algorithms depend on the planarization of the network connectivity graph for correctness, and the planarization process gives rise to a welldefined notion of “faces”. In this paper, we demonstrate that we can improve routing performance by storing a small amount of local face information at each node. We present a protocol, Path Vector Exchange (PVEX), that maintains local face information at each node efficiently, and a new geographic routing algorithm, Greedy Path Vector Face Routing (GPVFR), that achieves better routing performance in terms of both path stretch and hop stretch than existing geographic routing algorithms by exploiting available local face information. Our simulations demonstrate that GPVFR/PVEX achieves significantly reduced path and hop stretch than Greedy Perimeter Stateless Routing (GPSR) and somewhat better performance than Greedy Other Adaptive Face Routing (GOAFR+) over a wide range of network topologies. The cost of this imp...

• Type: Conference
• Year: 2005
• Where: ICNP
• Authors: Ben Leong, Sayan Mitra, Barbara Liskov
• Keywords: Geographic Routing Algorithms, ICNP 2005, Local Face Information, Network Protocols, Routing