TY - JOUR T1 - A general framework for efficient geographic routing in wireless networks JF - Computer Networks Y1 - 2010 A1 - Lee,Seungjoon A1 - Bhattacharjee, Bobby A1 - Banerjee,Suman A1 - Han,Bo KW - Geographic routing KW - Link cost estimation KW - Routing metric KW - Wireless multihop networks AB - 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 experiments in simulated environments. 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. We also conducted experiments in Emulab testbed and the results demonstrate that our proposed approach performs well in practice. VL - 54 SN - 1389-1286 UR - http://www.sciencedirect.com/science/article/pii/S1389128609002904 CP - 5 M3 - 10.1016/j.comnet.2009.09.013 ER -