Routing protocols for mobile sensor networks: a comparative study

This paper presents a comparison of cluster-based position and non position-based routing protocols for mobile wireless sensor networks to outline design considerations of protocols for mobile environments. The selected protocols are compared on the basis of multiple parameters, which include packet delivery ratio, packet loss, network lifetime, and control overhead using variable number of nodes and speeds. The extensive simulation and analysis of results show that position-based routing protocols incur less packet loss as compared to the non position based protocols. However, position-based protocols require localization mechanism or a GPS for the location information, which consumes energy and affects the network lifetime. Alternatively, non position-based protocols are more energy efficient and provide extended network lifetime

Distributed Efficient Multi Hop Clustering Protocol for Mobile Sensor Networks

Abstract: This paper presents a Distributed Efficient Multi hop Clustering (DEMC) protocol for mobile wireless sensor networks. An overwhelming majority of current research on sensor networks considers static networks only, while we consider mobile environment. DEMC is distributed, works well with mobile nodes, and has a recovery mechanism that is used to reduce the packet loss during inter cluster communication. The recovery mechanism also improves the connectivity between cluster heads during inter cluster communication. On average, each node sends less than one message during clustering, and does not rely on periodic hello messages. As a result reducing number of transmissions leads to energy efficiency. Simulation results show that DEMC is energy efficient, incurs less packet loss, increases packet delivery ratio, and exhibits robustness against moderate to high mobility of nodes