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21013 On Mobility Management in Multi-Sink Sensor Networks for Geocasting of Queries
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Erman-Tüysüz, A. and Dilo, A. and van Hoesel, L.F.W. and Havinga, P.J.M. (2011) On Mobility Management in Multi-Sink Sensor Networks for Geocasting of Queries. Sensors, 11 (12). pp. 11415-11446. ISSN 1424-8220 *** ISI Impact 2,033 ***

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Official URL: http://dx.doi.org/10.3390/s111211415

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Abstract

In order to efficiently deal with location dependent messages in multi-sink wireless sensor networks (WSNs), it is key that the network informs sinks what geographical area is covered by which sink. The sinks are then able to efficiently route messages which are only valid in particular regions of the deployment. In our previous work (see the 5th and 6th cited documents), we proposed a combined coverage area reporting and geographical routing protocol for location dependent messages, for example, queries that are injected by sinks. In this paper, we study the case where we have static sinks and mobile sensor nodes in the network. To provide up-to-date coverage areas to sinks, we focus on handling node mobility in the network. We discuss what is a better method for updating the routing structure (i.e., routing trees and coverage areas) to handle mobility efficiently: periodic global updates initiated from sinks or local updates triggered by mobile sensors. Simulation results show that local updating perform very well in terms of query delivery ratio. Local updating has a better scalability to increasing network size. It is also more energy efficient than ourpreviously proposed approach, where global updating in networks have medium mobility rate and speed.

Item Type:Article
Research Group:EWI-PS: Pervasive Systems
Research Program:CTIT-WiSe: Wireless and Sensor Systems
Research Project:ReconSurve NL: A Reconfigurable Surveillance System With Smart Sensors And Communication, FREE: True-wireless mesh networks for transport and logistics
ID Code:21013
Status:Published
Deposited On:19 December 2011
Refereed:Yes
International:Yes
ISI Impact Factor:2,033
More Information:statisticsmetis

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