An Improved TCP Congestion Control Algorithm of Based on Bandwidth Estimation in Heterogeneous Networks

Autor:	Rui-Qing Wu, Hong Jie, Nan Ding
Rok vydání:	2014
Předmět:	CUBIC TCP TCP acceleration Computer science business.industry ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS H-TCP TCP global synchronization TCP Westwood plus TCP Friendly Rate Control TCP Westwood HSTCP Electrical and Electronic Engineering business Algorithm Computer network
Zdroj:	Journal of Communications. 9:792-797
ISSN:	1796-2021 2374-4367
Popis:	—Due to the difficulty in discriminating the wireless loss from congestion loss in heterogeneous networks, TCP Westwood can not accurately estimate the available bandwidth, and cause low network utilization. In this paper, we propose an improved congestion control algorithm called TCP NewBR, which adaptively estimates bandwidth by using the bottleneck link utilization, and selects more precise time interval of ACK to improve the accuracy of available bandwidth estimation. In addition, we also modify the faster recovery and faster retransmission algorithms according to the queue length of bottleneck link. Simulation results in several scenarios show that TCP NewBR can get more accurate bandwidth estimation, and more significant throughput than traditional TCP Westwood, and fairer and friendlier than TCP Reno.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::deff236ccda0a4709937eb8010180d5e https://doi.org/10.12720/jcm.9.10.792-797 Zobrazit plný text záznamu