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On Combining Duty-cycling with Network Coding in Flood-based Sensor Networks

Network coding and duty-cycling are two popular techniques for saving energy
in wireless sensor networks. To the best of our knowledge, the idea to combine these
two techniques, for even more aggressive energy savings, has not been explored. One
explanation is that these two techniques achieve energy efficiency through conflicting
means, e.g., network coding saves energy by exploiting overhearing, whereas dutycycling
saves energy by cutting idle listening and, thus, overhearing. In this thesis,
we thoroughly evaluate the use of network coding in duty-cycled sensor networks.
We propose a scheme called DutyCode, in which a MAC protocol implements packet
streaming and allows the application to decide when a node can sleep. Additionally,
a novel, efficient coding scheme decision algorithm, ECSDT, assists DutyCode to
reduce further energy consumption by minimizing redundant packet transmissions,
while an adaptive mode switching algorithm allows smooth and timely transition
between DutyCode and the default MAC protocol, without any packet loss. We
investigate our solution analytically, implement it on mote hardware, and evaluate it
in a 42-node indoor testbed. Performance evaluation results show that our scheme
saves 30-46% more energy than solutions that use network coding, without using
duty-cycling.

Identiferoai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/ETD-TAMU-2010-12-8627
Date2010 December 1900
CreatorsChandanala, Roja Ramani
ContributorsStoleru, Radu
Source SetsTexas A and M University
Languageen_US
Detected LanguageEnglish
Typethesis, text
Formatapplication/pdf

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