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Distributed CSMA with pairwise coding

Author(s)
Jones, Nathaniel M.; Shrader, Brooke E.; Modiano, Eytan H
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Abstract
We consider distributed strategies for joint routing, scheduling, and network coding to maximize throughput in wireless networks. Network coding allows for an increase in network throughput under certain routing conditions. We previously developed a centralized control policy to jointly optimize for routing and scheduling combined with a simple network coding strategy using max-weight scheduling (MWS) [9]. In this work we focus on pairwise network coding and develop a distributed carrier sense multiple access (CSMA) policy that supports all arrival rates allowed by the network subject to the pairwise coding constraint. We extend our scheme to optimize for packet overhearing to increase the number of beneficial coding opportunities. Simulation results show that the CSMA strategy yields the same throughput as the optimal centralized policy of [9], but at the cost of increased delay. Moreover, overhearing provides up to an additional 25% increase in throughput on random topologies.
Date issued
2013-07
URI
http://hdl.handle.net/1721.1/116698
Department
Lincoln Laboratory; Massachusetts Institute of Technology. Department of Aeronautics and Astronautics; Massachusetts Institute of Technology. Laboratory for Information and Decision Systems
Journal
2013 Proceedings IEEE INFOCOM
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Jones, Nathaniel M., Brooke Shrader, and Eytan Modiano. “Distributed CSMA with Pairwise Coding.” 2013 Proceedings IEEE INFOCOM (April 2013), Turin, Italy, Institute of Electrical and Electronics Engineers (IEEE), 2013.
Version: Author's final manuscript
ISBN
978-1-4673-5946-7
978-1-4673-5944-3
978-1-4673-5945-0
ISSN
0743-166X

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