Date Added: Dec 2009
Several geographic (or position-based) routing protocols have been proposed for data dissemination in wireless sensor networks. In these protocols, routing is based on the positions of neighboring nodes. In particular, the next-hop node is selected according to either a distance-based strategy, which favors a neighbor with the largest distance progress toward the sink, or a direction-based strategy, which favors a neighbor with the lowest angle deviation toward the sink. In this paper, the authors propose a novel Hybrid Geographic Routing (HGR) scheme that combines both distance- and direction-based strategies in a flexible manner.