A Novel Routing Protocol for Mobile Nodes in WSN

Abstract

Wireless sensor networks are energy constrained. Clustering algorithm is a key technology used to reduce power consumption in WSNs. The LEACH protocol is a typical adaptive clustering routing algorithm with low power consumption. Unfortunately, it has some disadvantages such as uneven distribution of cluster heads and unbalanced energy cost. In each round of communication, if a node moves away from a cluster or towards another cluster after cluster construction, LEACH protocol can't manage the route and process data effectively. An improved algorithm LEACH-M (LEACH-mobile) is presented in this paper to manage such routing problem in mobile network, which can make energy consumption more balanced. Cluster election mode is changed in LEACH-M by considering current energy level of each node and transmission power calculated by relative distance, then adjusting the probability of a node becoming cluster head. Mobile nodes can join new clusters in time and time slots of original and new cluster heads should be re-allocated, so that useless power consumption can be reduced. Simulation result shows that LEACH-M is effective in prolonging network lifetime and improving data transmission efficiency.

Metaheuristic Clustering Protocol for Healthcare Data Collection in Mobile Wireless Multimedia Sensor Networks

“…A new effective routing technique is designed for M-WMSN by considering the network topology, node's mobility, power utilization, coverage, and so on. In Reference [24], a mobility-based protocol called Mobile LEACH was presented for M-WMSN. The process of mobile LEACH was similar to that of the traditional LEACH [25].…”

Mobile Wireless Sensor Networks: An Overview

“…Even dynamic clustering improves the lifetime of the network; the static LEACH is not suitable for the large scale mobile wireless sensor networks; therefore, LEACH with mobility must be considered for the dynamic networks. The LEACH variants such as T-LEACH, mobile LEACH, and LEACH-mobile-enhanced are considered for the mobile sensor networks [29][30][31][32]. Wireless Sensor Networks -Insights and Innovations…”

“…Mobile LEACH [29] is a mobility-centric protocol which is designed for mobile wireless sensor networks. Mobile LEACH operations are very similar to the static LEACH operations.…”

An Efficient Distance-Energy-based Minimum Spanning Tree (DE-MST) for Wireless Sensor Networks

“…It incorporates data fusion into the routing protocols to reduce the amount of information to be transferred to the (BS). Modified LEACH has been proposed in previous studies [9][10][11][12][13][14]. Farooq-et al, [10] proposed a Multi-hop Routing LEACH (MR-LEACH) protocol that divides the network into various cluster layers, wherein every cluster collaborates with BS to conserve energy.…”

“…Gu et al [13] presented an improved Mobile LEACH (M-LEACH) algorithm to manage the routing problem and balance the energy consumption. Simulation result shows that M-LEACH performs effectively in prolonging the network life_time and improves the data transmission efficiency.…”