Energy-Efficient Data Reporting Strategy (EDRS) for Multilayer Clustering WSN

Abstract

Energy consumption is one of the key issues in data reporting in wireless sensor networks (WSNs). Unbalanced energy consumption that characterized by many-to-one traffic pattern results in uneven energy dissipation among sensors which consequently reduces network lifetime significantly. In event tracking and monitoring system with direct constant data reporting of the ongoing event, energy depletion of sensors in specific region in the network where the event takes place is unavoidable. However, energy depletion can be balanced if sensors are clustered into groups and sensed data are transmitted through multi-hop towards the Based Station (BS) over Cluster Heads (CHs) with different transmission ranges capabilities. CHs should have the knowledge that enables them to know how many packets should be transmitted either in multi-hop or directly in order to avoid the fast energy drain of sensors near the BS. The knowledge can be provided by the BS based on the region where CHs are located. In this paper, we propose an energy-efficient strategy for reporting the sensed data in multilayer clustered WSN. The proposed strategy maximizes network lifetime through balancing energy consumption by using dual transmission range for forwarding pre-defined number of data packets according to the network condition. Experimental simulations have been performed to validate the proposed strategy