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Experimental Analysis of Concurrent Packet Transmissions in Wireless Sensor Networks

Dongjin Son, Bhaskar Krishnamachari, and John Heidemann
USC/Information Sciences Institute

Abstract

 We undertake a systematic experimental study of the effects of concurrent packet transmissions in low-power wireless networks. Our measurements, conducted with Mica2 motes equipped with CC1000 radios, confirm that guaranteeing successful packet reception with high probability in the presence of concurrent transmissions requires that the signal-to-interference-plus-noise-ratio (SINR) exceed a critical threshold. However, we find a significant variation of about 6 dB in the threshold for groups of radios operating at different transmission powers. We find that it is harder to estimate the level of interference in the presence of multiple interferers. We also find that the measured SINR threshold generally increases with the number of interferers. Our study offers a better understanding of concurrent transmissions and suggests richer interference models and useful guidelines to improve the design and analysis of higher layer protocols.

Availability

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Reference

Son06a
Dongjin Son, Bhaskar Krishnamachari, and John Heidemann. Experimental Analysis of Concurrent Packet Transmissions in Wireless Sensor Networks. In Proceedings of the Fourth ACM SenSys Conference , pp. 237-249. Boulder, Colorado, USA, ACM. November, 2006. <http://www.isi.edu/~johnh/PAPERS/Son06a.html>. 
@inproceedings{Son06a,
	author = "Dongjin Son and Bhaskar Krishnamachari and John Heidemann",
	title = "Experimental Analysis of Concurrent Packet
                         Transmissions in Wireless Sensor Networks",
	booktitle = "Proceedings of the Fourth {ACM} {SenSys} Conference ",
	year = "2006",
	publisher = "{ACM}",
	address = "Boulder, Colorado, USA",
	month = "November",
	pages = "237--249",
	url = "http://www.isi.edu/~johnh/PAPERS/Son06a.html",
	pdfurl = "http://www.isi.edu/~johnh/PAPERS/Son06a.pdf",
	copyrightholder = "{ACM}",
}

Copyright

This paper is copyright © 2006 by ACM. Permission to make digital or hard copies of part or all of this work for personal use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that new copies bear this notice and the full citation on the first page. Abstracting with credit is permitted.

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© 2006 $Date$