Title: Non-Location-Based Mobile Sensor Relocation in a Hybrid Static-Mobile Wireless Sensor Network
Authors: Wu, Fang-Jing
Hsu, Hsiu-Chi
Tseng, Yu-Chee
Huang, Chi-Fu
資訊工程學系
Department of Computer Science
Keywords: load balance;mobile computing;mobile sensor;pervasive computing;wireless sensor network
Issue Date: 2009
Abstract: An inherent concern for a wireless sensor network (WSN) is the unbalanced energy consumption problem, where sensors closer to the sink are more likely to exhaust their energy faster than other nodes. To mitigate this problem, this paper considers including some resource-rich mobile nodes, called mobile data-pumps, to conduct data relaying from static sensors to the sink. The network thus becomes a two-tier network, with the original static sensors at the low tier and data-pumps at both low and high tiers. We propose a novel distributed navigation protocol that does not rely on any location information of sensor nodes to relocate data-pumps to meet both goals of connectivity and load balance. The main idea is a concept called virtual Voronoi cells, which can help data-pumps to locally balance their loads using the underlaying low-tier topology and thus significantly balance energy consumption of sensors. Simulation results are presented to verify the effectiveness of our result.
URI: http://hdl.handle.net/11536/17294
http://dx.doi.org/10.1109/SENSORCOMM.2009.118
ISBN: 978-1-4244-4309-3
DOI: 10.1109/SENSORCOMM.2009.118
Journal: 2009 3RD INTERNATIONAL CONFERENCE ON SENSOR TECHNOLOGIES AND APPLICATIONS (SENSORCOMM 2009)
Begin Page: 643
End Page: 649
Appears in Collections:Conferences Paper


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