Load Aware Effective Backoff Scheme in Wireless Sensor Network

Abstract

Wireless sensors network is widely deployed in many areas such as smart homes and Internet of Things (IoT). However, since the limited energy source is a primary concern in the improvement and practical use of WSN, it is necessary to improve the energy efficiency. The backoff mechanism implemented in the WSN communication protocol is a key element in ensuring energy-efficient communication between sensor nodes. Many of the previous backoff approaches perform well on light to moderately loaded networks. However, on a heavily loaded network, the performance degrades significantly. In this paper, we devise a novel adaptive scheme which estimates network traffic using data arrival rate to improve the network throughput and the energy efficiency. We develop a Markov model for the proposed scheme with the provision of numerical analysis. The simulation results show that the proposed scheme significantly improves the energy efficiency and throughput.