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Topology control for wireless sensor networks
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Source International Conference on Mobile Computing and Networking archive
Proceedings of the 9th annual international conference on Mobile computing and networking table of contents
San Diego, CA, USA
SESSION: Ad hoc and sensor networks table of contents
Pages: 286 - 299  
Year of Publication: 2003
ISBN:1-58113-753-2
Authors
Jianping Pan  University of Waterloo, Waterloo, ON
Y. Thomas Hou  Virginia Tech, Blacksburg, VA
Lin Cai  University of Waterloo, Waterloo, ON
Yi Shi  Virginia Tech, Blacksburg, VA
Sherman X. Shen  University of Waterloo, Waterloo, ON
Sponsors
ACM: Association for Computing Machinery
SIGMOBILE: ACM Special Interest Group on Mobility of Systems, Users, Data and Computing
Publisher
ACM  New York, NY, USA
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ABSTRACT

We consider a two-tiered Wireless Sensor Network (WSN) consisting of sensor clusters deployed around strategic locations and base-stations (BSs) whose locations are relatively flexible. Within a sensor cluster, there are many small sensor nodes (SNs) that capture, encode and transmit relevant information from the designated area, and there is at least one application node (AN) that receives raw data from these SNs, creates a comprehensive local-view, and forwards the composite bit-stream toward a BS. In practice, both SN and AN are battery-powered and energy-constrained, and their node lifetimes directly affect the network lifetime of WSNs. In this paper, we focus on the topology control process for ANs and BSs, which constitute the upper tier of a two-tiered WSN. We propose approaches to maximize the topological network lifetime of the WSN, by arranging BS location and inter-AN relaying optimally. Based on an algorithm in Computational Geometry, we derive the optimal BS locations under three topological lifetime definitions according to mission criticality. In addition, by studying the intrinsic properties of WSNs, we establish the upper and lower bounds of their maximal topological lifetime. When inter-AN relaying becomes feasible and favorable, we continue to develop an optimal parallel relay allocation to further prolong the topological lifetime of the WSN. An equivalent serialized relay schedule is also obtained, so that each AN only needs to have one relay destination at any time throughout the mission. The experimental performance evaluation demonstrates the efficacy of topology control as a vital process to maximize the network lifetime of WSNs.


REFERENCES

Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

 
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CITED BY  32
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Collaborative Colleagues:
Jianping Pan: colleagues
Y. Thomas Hou: colleagues
Lin Cai: colleagues
Yi Shi: colleagues
Sherman X. Shen: colleagues

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