Effective Energy Management in Routing Protocol for Wireless Sensor Networks

Nodes sensors of a wireless sensor networks (WSNs) are powered by exhaustible batteries with limited life duration and generally non-rechargeable. As the deployment of these WSNs occurs in harsh areas generally inaccessible and sometimes hostile, the replacement of depleted batteries is not feasible, so nodes must therefore ensure their mission with their unique initial strict energy budget. This constraint makes the energy resource the most decisive and of critical importance in the WSNs. As data routing constitutes a basic service and that the communication is the activity with the highest energy consumption, the routing protocols have then paid and continue to pay much attention in this context of energy conservation. In this paper, we propose a multi hops routing protocol: PEGASIS-MH minimizing energy consumption and extending the network life time. This new protocol is a combination more efficient of the well known protocols hierarchical LEACH and PEGASIS. The results obtained through the simulations carried out in an environment of the simulator NS2 have shown that the performances achieved by our proposal are noteworthy and outperform those of the original protocols.