Efficient geographic routing in multihop wireless networks

TitleEfficient geographic routing in multihop wireless networks
Publication TypeConference Papers
Year of Publication2005
AuthorsLee S, Bhattacharjee B, Banerjee S
Conference NameProceedings of the 6th ACM international symposium on Mobile ad hoc networking and computing
Date Published2005///
Conference LocationNew York, NY, USA
ISBN Number1-59593-004-3
KeywordsGeographic routing, Link cost estimation, Routing metric, Wireless multihop networks

We propose a new link metric called normalized advance (NADV) for geographic routing in multihop wireless networks. NADV selects neighbors with the optimal trade-off between proximity and link cost. Coupled with the local next hop decision in geographic routing, NADV enables an adaptive and efficient cost-aware routing strategy. Depending on the objective or message priority, applications can use the NADV framework to minimize various types of link cost.We present efficient methods for link cost estimation and perform detailed simulations in diverse scenarios. Our results show that NADV outperforms current schemes in many aspects: for example, in high noise environments with frequent packet losses, the use of NADV leads to 81% higher delivery ratio. When compared to centralized routing under certain settings, geographic routing using NADV finds paths whose cost is close to the optimum.