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

Rui-qing, WU; Hong, Jie; Ding, Nan

doi:10.12720/jcm.9.10.792-797

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…Since existing high wireless error, long transmission delay and complex network structure in heterogeneous network, the performance of traditional TCP is limited seriously as TCP is designed for wired network [ 1 – 2 ]. We analyze the reason of problems mentioned above before and after packet loss.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Flexibility of TCP in Heterogeneous Network

Wang

Zhou

et al. 2016

PLoS ONE

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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.

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Section: Introductionmentioning

confidence: 99%

Enhancing the Flexibility of TCP in Heterogeneous Network

Wang

Zhou

et al. 2016

PLoS ONE

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“…Wu et al [7] regarded the bottleneck link utilization as a weighted linear factor to estimate available bandwidth. It is of great benefit to accurately estimate the bandwidth not only in case of nonoccurrence of packet loss but also the random loss and congestion loss condition.…”

Section: Introductionmentioning

confidence: 99%

A novel bandwidth estimation algorithm of TCP westwood in typical LTE scenarios

Chen

Liu

Duan

et al. 2015

2015 IEEE/CIC International Conference on Communications in China (ICCC)

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With the popularity of the wireless network, people are in urgent need of high efficiency transmission. As for the TCP layer, how to transmit the information with guidance rises to an important level. TCP Westwood (TCPW) is a sender-side modification of the TCP congestion control algorithm by estimating the available bandwidth. However, TCP Westwood usually overestimates the allocated bandwidth when there are more than two TCP flows competing the bottleneck link, which may cause earlier congestion and unnecessary retransmission even the transmission is timeout. In this paper, we propose a novel algorithm called TCPW with Holt-Winters (TCPWH) to estimate the bandwidth accurately by introducing the HoltWinters forecasting model into the TCP Westwood. The result of the simulations in typical Long Term Evolution (LTE) scenarios shows that TCPWH improves the performance on bandwidth estimation, throughput and fairness compared with TCPW.

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