Paper Info
Title
CoCoA+: An advanced congestion control mechanism for CoAP
Abstract
The Constrained Application Protocol (CoAP) has been designed by the Internet Engineering Task Force (IETF) for Internet of Things (IoT) devices. Due to the limited radio channel capacities and hardware resources of such devices, congestion can be a serious problem. CoAP addresses this important issue with a basic congestion control mechanism. CoCoA, an Internet-Draft proposal, introduced alternative congestion control mechanisms for CoAP. Yet, there has been limited evaluation of these congestion control mechanisms in the literature. In this paper, we assess the methods applied in CoCoA in detail and propose improvements to address the shortcomings observed in the congestion control mechanisms. We carry out simulations to compare the congestion control performance for default CoAP, CoCoA, and our new proposal, CoCoA+, in a variety of network topologies and use cases. The results show that CoCoA+ outperforms default CoAP and achieves better results than CoCoA in the majority of considered cases.
Year
DOI
Venue
2015
10.1016/j.adhoc.2015.04.007
Ad Hoc Networks
Keywords
Field
DocType
CoAP,Congestion control,Internet of Things
Use case,Task force,Computer science,Internet of Things,Computer network,Network topology,Constrained Application Protocol,Network congestion,Radio channel,The Internet,Distributed computing
Journal
Volume
ISSN
Citations 
33
1570-8705
11
PageRank 
References 
Authors
0.89
7
4
Name
Order
Citations
PageRank
August Betzler1748.76
Carles Gomez250941.34
Ilker Demirkol393367.93
Josep Paradells447244.49