Back pressure congestion control for CoAP/6LoWPAN networks

In this paper we address the design of network architectures for the Internet of Things by proposing practical algorithms to augment IETF CoAP/6LoWPAN protocol stacks with congestion control functionalities. Our design is inspired by previous theoretical work on back pressure routing and is targeted...

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Bibliographic Details
Published in:Ad hoc networks 2014-07, Vol.18, p.71-84
Main Authors: Castellani, Angelo P., Rossi, Michele, Zorzi, Michele
Format: Article
Language:English
Subjects:
6LoWPAN
Back pressure
Bidirectional
CoAP
Congestion
Congestion control
Internet
Internet of Things
Networks
Protocol design
Routing (telecommunications)
Stacks
Upstream
Web services
World Wide Web
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Summary:In this paper we address the design of network architectures for the Internet of Things by proposing practical algorithms to augment IETF CoAP/6LoWPAN protocol stacks with congestion control functionalities. Our design is inspired by previous theoretical work on back pressure routing and is targeted toward Web-based architectures featuring bidirectional data flows made up of CoAP request/response pairs. Here, we present three different cross-layer and fully decentralized congestion control schemes and compare them against ideal back pressure and current UDP-based protocol stacks. Hence, we discuss results obtained using ns-3 through an extensive simulation campaign for two different scenarios: unidirectional and upstream flows and bidirectional Web-based CoAP flows. Our results confirm that the proposed congestion control algorithms perform satisfactorily in both scenarios for a wide range of values of their configuration parameters, and are amenable to the implementation onto existing protocol stacks for embedded sensor devices.
ISSN:1570-8705
1570-8713
DOI:10.1016/j.adhoc.2013.02.007