Re-evaluation of the stable improved LEACH routing protocol for wireless sensor network

Abstract

Different variants of LEACH algorithms are presented in the literature. A stable improved LEACH (SILEACH) algorithm, one of the LEACH variants, was proposed to overcome the problems of LEACH algorithm. Enhanced LEACH (ELEACH) and improved LEACH are other variants of LEACH algorithm which have the ability to increase the network lifetime. ELEACH utilizes distance to increase the lifetime, whereas improved LEACH increases the network lifetime using the residual energy and distance to the base station (BS). However, cluster heads selection in improved LEACH and ELEACH reduces the stability period. Generally, in many applications, network stability is considered crucial because the feedback reliability is required by the network. Recently, the SILEACH has been evaluated by assuming the BS outside the network area. In this paper, a re-evolution of the SILEACH algorithm in different environments is performed to show its effectiveness in overcoming the limitation of the ELEACH and improved LEACH algorithms. This is performed by assuming the BS inside the network area. The simulation results showed that the SILEACH significantly outperforms the two protocols in terms of the stability period and network lifetime.