Mobility of a Base Station for Simultaneous Multiple Events in a Static Wireless Sensor Network

Abstract

Energy constrained nature and unattended Most of the research papers consider a time driven deployment of sensors motivates the need of special techniques approach wherein the sensors transmit data periodically to the for designing reliable Wireless Sensor Networks. Recently many BS. But, there are many applications like disaster monitoring, approaches are considering mobile sensor nodes to deal with this security surveillance which require an event based approach problem. But making all the sensors mobile involves more where data is relayed to the BS only in the case of occurrence signaling overhead for network maintenance. It is energy of an efficient to move the base station which has no power limitations. event [2]. Multie eets cn occu saneou t Also, there are many real life applications in which event based different locations in the network. In this paper, we exploit approach is more appropriate. In this paper, we propose an the BS mobility in case of multiple events occurring adaptive scheme for a mobile base station that moves according simultaneously throughout the network to improve the overall to the occurrence of events. We propose two optimization network lifetime. schemes: moving the BS towards the event centroid and movingThe rest ofthe paper is organized as follows. Section the BS towards distance based weighted centroid. Simulation II discusses the related work in the area of BS mobility and results show that moving the base station adaptively energy optimization. Section III describes our network model. significantly prolongs the network lifetime. (Abstract)In section IV we present the proposed mobility strategies.