Region based three dimensional real-timel routing protocol for wireless sensor networks

This paper presents a novel 3D real-time geographical routing protocol (3DRTGP) for wireless sensor networks (WSNs). It provides a unique adaptive packet forwarding region (PFR) selection algorithm based on network density. 3DRTGP controls the number of forwarding nodes to reduce collision in the network, which in turn, enables it to meet real-time application requirements, i.e., packet delivery within a specified deadline. In order to make 3DRTGP viable, we provide a solution for void node problem (VNP) in 3D deployment. The performance evaluation through simulation shows significant improvements in end-to-end delay and missratio over similar 3D geographical routing protocols.