John Heidemann / Papers / Experimental Analysis of Concurrent Packet Transmissions in Low-Power Wireless Networks

Experimental Analysis of Concurrent Packet Transmissions in Low-Power Wireless Networks
Dongjin Son, Bhaskar Krishnamachari and John Heidemann

Citation

Dongjin Son, Bhaskar Krishnamachari and John Heidemann. Experimental Analysis of Concurrent Packet Transmissions in Low-Power Wireless Networks. Technical Report ISI-TR-2005-609. USC/Information Sciences Institute. [PDF] [alt PDF]

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 \emphsignal-to-interference-plus-noise-ratio (SINR) exceed a critical threshold. However, groups of radios show a wide gray region of about 6dB. We find that this occurs because the SINR threshold can vary significantly depending on the measured signal power and radio hardware. 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 wireless network protocols.

Bibtex Citation

@techreport{Son05a,
  author = {Son, Dongjin and Krishnamachari, Bhaskar and Heidemann, John},
  title = {Experimental Analysis of Concurrent Packet Transmissions in Low-Power Wireless Networks},
  institution = {USC/Information Sciences Institute},
  year = {2005},
  sortdate = {2005-12-01},
  project = {ilense, macss},
  jsubject = {wireless_propagation},
  number = {ISI-TR-2005-609},
  month = dec,
  location = {johnh: pafile},
  keywords = {concurrent packet transmission, capture
                           effect, radio models},
  otherurl = {ftp://ftp.isi.edu/isi-pubs/tr-609.pdf},
  url = {http://www.isi.edu/%7ejohnh/PAPERS/Son05a.html},
  pdfurl = {http://www.isi.edu/%7ejohnh/PAPERS/Son05a.pdf},
  copyrightholder = {authors}
}
Copyright © by John Heidemann