Exploiting Small World Networks for Energy Efficiency in Network of Multi-Clock-Rate Wireless Devices

Abstract

While state-of-the-art in wireless communication is highly spectrum efficient, it is still wanting in terms of energy efficiency. Sleep scheduling techniques provide limited gains due to the large fraction of time spent by wireless devices in idle-listening. The use of multi-clock-rate sampling devices (MCDs) in conjunction with frequency agnostic preamble detection promises significant improvements in energy efficiency by downclocking the receiver to save energy. In this paper, we consider a wireless ad hoc network of MCDs, and model it as a small world network. We propose a new energy efficient small world network model for a network of MCDs, which considers the battery energy of the wireless nodes, the multi-hop transmission distance, and downclocking level of the devices. Results show that the proposed model is more energy efficient than the Newman and Watts model.