Hyoung Jin Kim , Lae Young Kim , Joo Seok Song

KIPS Transactions on Computer and Communication Systems, Vol. 14, No. 2, pp. 139-146, Apr. 2007
10.3745/KIPSTC.2007.14.2.139,   PDF Download:

Abstract

Mobile Sensor Network(MSN) is actively studied due to the advent of mobile sensors such as Robomote and Robotic SensorAgents(RSAs). However, existing studies on MSN have mainly focused on coverage hole problem which occurs in Stationary Sensor Network(SSN). To address coverage hole problem, these studies make mobile sensors move temporarily so that they do not make the best use of the mobility of mobile sensors. Thus, a mechanism utilizing the continuous movement of mobile sensors is proposed to improve thenetwork coverage performance. However, this mechanism is presently immature and does not explain how to make routing path and send data from mobile sensors to a sink node. Therefore, to efficiently make routing path and send data from mobile sensors to a sink node, we propose a communication protocol for mobile sensor network where mobile sensors continuously move. The proposed protocol deploys not only mobile sensors but also stationary sensors which send sensing data to a sink node instead of mobile sensors. Simulation results show that the proposed protocol improves the performance in terms of network coverage and traffic overhead, compared to conventional SSN protocols.

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