Wireless Transport Layer Congestion Control Evaluation
College of Computing, Engineering & Construction
Master of Science in Computer and Information Sciences (MS)
Foundations and Secondary Education
Sanjay P. Ahuja, PhD
Roger E. Eggen, PhD
Zornitza G. Prodanoff, PhD
Judith L. Solano, PhD
Peter A. Braza
Using an active network evaluation technique, the congestion control algorithms of the TCP, DCCP, and SCTP transport layer protocols were evaluated to determine their characteristics in the presence of wireless congestion versus network congestion. The performance metrics in question included throughput, fairness, and smoothness. Through rigorous experimentation and controlled application of the two congestion types, the protocols were evaluated for effectiveness in the wireless and wired environments in terms of fairness and smoothness. Though TCP’s fairness suffers when subjected to wireless congestion, the results showed the alternative protocols suffered in terms of fairness whether congestion is present or not, wireless or otherwise. The smoothness of the alternative protocol, DCCP configured to use the congestion control profile CCID2, was found to be unaffected by the congestion source. The smoothness of SCTP was affected by the amount of time it was allowed to establish itself, prior to the introduction of congestion. SCTP performed even smoother within a wirelessly congested environment than it did in a traditional Ethernet congested environment. Each of these conclusions will be useful for future development of these protocols as well as their implementations in wireless or wired networks. The research performed in this thesis can also provide a framework for wireless transport layer congestion control evaluation.
Shore, William Russell, "Wireless Transport Layer Congestion Control Evaluation" (2010). UNF Graduate Theses and Dissertations. 1047.