Energy Optimization Mechanism in Wireless Sensor Networks

Nowadays, wireless sensor networks (WSN) present a lot of interest in several research areas due to their wide range of applications. One of the most critical problems is how to ensure a better and efficient communication taking into account some constraints such as network lifetime and energy consumption. In this context and as an alternative, several papers focusing on the conception and development of robust routing protocols have been undertaken these last decades. In this paper, we propose a robust hierarchical routing protocol using a dynamic clustering mechanism (HRP-DCM) which consists to build clusters wherein coordinators nodes with extra privileges called Cluster-Head (CH) are able to create and manipulate messages using TDMA schedule and aggregate data according to CDMA method. The effectiveness of the proposed approach is illustrated in simulations.