BOUKHDIMI, MamaMEZIANE, Djamila2024-01-282024-01-282018https://theses.univ-temouchent.edu.dz/opac_css/doc_num.php?explnum_id=1724http://dspace.univ-temouchent.edu.dz/handle/123456789/1635The Wireless Sensor Networks (RCSF) are a particular type of wireless networks, they are characterized by these innovative elements is the sensor node with its small size, the latter was forced to use a limited storage space and a small battery so, there are two major constraints in the RCSFs, and we have found several studies on the energy subject of a sensor node is based on the software architecture. It is for this purpose that we have studied a basic routing algorithm that is the LEACH protocol and its SEP improvement. In order to propose an improved proposal for the SEP, we conducted a simulation using the MATLAB network simulator, in which the performances of our algorithms are compared.WSN, energy efficient, hierarchical routing protocol, Cluster-based approach, cluster-head, LEACH, SEP.