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Revising buffering in CSMA/CA wireless multihop networks
Citation key D-RBCCWMN-07
Author Dousse, Olivier
Title of Book IEEE ComSoc Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON '07)
Pages 580–589
Year 2007
ISBN 1-4244-1268-4
DOI http://dx.doi.org/10.1109/SAHCN.2007.4292870
Location San Diego, CA, USA
Month June
Abstract We look at a multihop wireless path with relay nodes running some CSMA/CA protocol. We show that current buffering schemes with a drop-tail policy lead to low throughput, independently of any other MAC layer issues. We propose a simple alternative buffering policy, where relay nodes are essentially bufferless. We show that even without buffering, the network can be stabilized in a regime where the link utilization is optimal, through very simple amendments to the MAC layer. Furthermore, the network operation stays self-organized and resilient to mild interference and transmission failures. Exploiting a packet/hole duality property of the system, we suggest extensions for handling bidirectional traffic along the path, and more general mesh network configurations.
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