Abstract
We propose a geographic forwarding protocol for wireless sensor networks (WSNs). Our proposed protocol, named Landmark-based Location-Aware Routing (LLAR), intelligently combines greedy forwarding and a hole detouring technique utilizing landmark information. Compared to existing approaches, our proposal utilizes the feedback message from the sink node for discovery of the optimal path. Simulations show that our proposed scheme can eliminate a significant number of overhead messages compared to its counterparts, thereby further achieving higher energy efficiency.
