Open AccessEnhancing the Flexibility of TCP in Heterogeneous Network
Author(s) -
Hui Wang,
Peiyu Li,
Fan Zhou,
Zheqing Li,
Wei Xuhui
Publication year - 2016
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0161249
Subject(s) - tcp westwood plus , tcp friendly rate control , cubic tcp , tcp global synchronization , network congestion , computer science , h tcp , computer network , tcp tuning , tcp vegas , active queue management , hstcp , queue , convergence (economics) , tcp acceleration , packet loss , network packet , economics , economic growth
Due to a set of constant initial values, the performance of conventional TCP drops significantly encountering heterogeneous network, showing low throughput and unfairness. This paper firstly demonstrates the chaotic character of TCP congestion control in heterogeneous network, especially the sensitivity to initial value. Inspired by merit of nature-inspired algorithm, a novel structure of TCP congestion control (IPPM, Internet Prey-Predator Model) is proposed. Parameters such as available link capacity( C ), congestion window ( W ) and queue length ( Q ) are collected by IPPM, which calculates the max value of C according to the interacting relationship existing in C , W and Q , and IPPM initiates the TCP ssthresh with the calculated value. Plenty of simulation results show that the modified TCP can effectively avoid network congestion and packet loss. Besides, it holds high resource utilization, convergence speeds, fairness and stability.