Energy Efficient and Reliable Geographic Routing in Wireless Sensor Networks
The wireless link can be unreliable in realistic Wireless Sensor Networks (WSNs). Energy efficient and reliable data forwarding is important because each node has limited resources. Therefore, the authors must suggest an optimal solution that considers using the information of the node's characteristics. Previous routing protocols were unsuited to realistic asymmetric WSNs. In this paper, they propose a Protocol that considers Both sides of Link-quality and Energy (PBLE), an optimal routing protocol that balances modified link-quality, distance and energy. Additionally, they propose a node scheduling method. PBLE achieves a longer lifetime than previous routing protocols and is more energy-efficient. PBLE uses energy, local information and both sides of PRR in a 1-hop distance.