Impact of Topology on Energy Consumption in Wireless Sensor Networks

Abstract

Energy consumption is often regarded as a fundamental parameter in the context of availability in the wireless sensor networks (WSNs). This parameter poses energy problems particularly if the application must function for a long time. For the WSNs, it is impossible to reload or replace the batteries of nodes after their exhaustion. Several factors can be a source of energy over-consumption: mobility, retransmissions, the node position (relay or gateway),. .. The network topology can also damage the nodes batteries. Generally, the transmission in 1-hop increases the energy consumption if the distance is rather high. The transmission in K-hops solves the problem but weakened the energy of the intermediate nodes. In this paper, we will focus on the impact of topology on energy consumption and determine optimal topology maximizing lifetime of WSNs.