Modified Hierarchical LEACH Routing Protocol for IoT Applications

Abstract

The limitation of power and memory size of the sensor node will affect the lifetime of wireless sensor networks (WSN) and will apply a direct impact on IoT applications. A Basic idea from smart sensors is that they collaborate directly without human involvements. IoT applications require a good relationship between sensor node energy and network lifetime for attaining better results from the network. The routing protocol used to transfer data from sensor nodes to the base station should maintain small energy consumption as much as possible. LEACH (low energy adaptive clustering hierarchy) is a hierarchically based routing protocol used in the MAC layer. It uses a cluster head selection algorithm for data transmission from sensor nodes to base stations. Network lifetime improvement and energy dissipation are the most common terms in this protocol and to solve these issues we have introduced a cache node for data transmission in the network. The proposed LEACH protocol is compared with the existing protocol in terms of average residual energy, throughput, and network lifetime. The results are beneficial for IoT based applications.