期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2014
卷号：66
期号：2
出版社：Journal of Theoretical and Applied
摘要：Power aware routing is a powerful localized routing scheme for wireless sensor networks (WSNs) due to its scalability and efficiency. Maintaining neighborhood information for packet forwarding may not be suitable for WSNs in highly dynamic scenarios. Beacon-based protocols are maintaining neighbor information but does not comply on energy efficiency. We propose a novel routing scheme, called Geographic Relay Region based Power Aware Routing (GRRR), which can provide energy efficient, loop-free, stateless, sensor-to-sink power aware routing without the help of prior neighborhood information. In this routing scheme, each node first announces its next-hop optimum relay position on the straight line toward the sink and each node computes its quality value based on the residual power and distance between the optimum relay regions. Forwarder node is elected by the source based on quality value communicated using Request-To-Send/Clear-To-Send (RTS/CTS) handshaking mechanism. We establish the conditions for guaranteed delivery for sensor-to-sink routing, assuming no packet loss and no failures in greedy forwarding. We extend this scheme to lossy sensor networks to provide stable and efficient routing in the presence of unreliable communication links. Simulation results show that GRRR outperforms existing protocols with highly dynamic network topologies.
