A Forwarder Selection Method for Greedy Mode Operation of a Geographic Routing Protocol in a WSN

In this paper, we propose a forwarder selection method for the greedy mode operation of a geographic routing protocol in a wireless sensor network. For this, we devise a forwarder selection metric by combining multiple performance metrics including energy consumption, forwarding direction, congestion level of a potential forwarder, and forward progress. In our simulation studies, we showed that the proposed method improves the progress only method in an energy consumption aspect, and it also improves the progress over cost method in respect of end-to-end transmission delay. In addition, we showed that the proposed method reduces an amount of wasted energy.