Radio diversity for reliable communication in sensor networks

Kusy, Branislav, Abbott, David, Richter, Christian, Huynh, Cong, Afanasyev, Mikhail, Hu, Wen, Bruenig, Michael, Ostry, Diethelm and Jurdak, Raja (2014) Radio diversity for reliable communication in sensor networks. ACM Transactions on Sensor Networks, 10 2: 32:1-32:29. doi:10.1145/2530291


Author Kusy, Branislav
Abbott, David
Richter, Christian
Huynh, Cong
Afanasyev, Mikhail
Hu, Wen
Bruenig, Michael
Ostry, Diethelm
Jurdak, Raja
Title Radio diversity for reliable communication in sensor networks
Journal name ACM Transactions on Sensor Networks   Check publisher's open access policy
ISSN 1550-4859
1550-4867
Publication date 2014-01-01
Year available 2014
Sub-type Article (original research)
DOI 10.1145/2530291
Open Access Status Not Open Access
Volume 10
Issue 2
Start page 32:1
End page 32:29
Total pages 29
Place of publication New York, NY United States
Publisher ACM Special Interest Group
Language eng
Formatted abstract
Radio connectivity in wireless sensor networks is highly intermittent due to unpredictable and time-varying noise and interference patterns in the environment. Because link qualities are not predictable prior to deployment, current deterministic solutions to unreliable links, such as increasing network density or transmission power, require overprovisioning of network resources and do not always improve reliability.

We propose a new dual-radio network architecture to improve communication reliability in wireless sensor networks. Specifically, we show that radio transceivers operating at well-separated frequencies and spatially separated antennas offer robust communication, high link diversity, and better interference mitigation. We derive the optimal parameters for the dual-transceiver setup from frequency and space diversity in theory. We observe that frequency diversity holds the most benefits as long as the antennas are sufficiently separated to prevent coupling. Our experiments on an indoor/outdoor testbed confirm the theoretical predictions and show that radio diversity can significantly improve end-to-end delivery rates and network stability at only a small increase in energy cost over a single radio. Simulation experiments further validate the improvements in multiple topology configurations, but also reveal that the benefits of radio diversity are coupled to the number of available routing paths to the destination.
Keyword Radio diversity and robustness
Wireless sensor networks
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Information Technology and Electrical Engineering Publications
 
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