Improving Westwood over bandwidth instability

  • Ming Kun Wang
  • , Wei Zhang*
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The design of TCP/IP is the key of the success of Internet. Due to the network considered as a "black box", the congestion control algorithm becomes the most important part of TCP. TCP Westwood provides an eligible rate estimation algorithm that improves upon the performance of TCP Reno in wired as well as wireless networks. The improvement is most significant in wireless networks with lossy links. In mobile communication, due to the node mobility, the bandwidth shifting requires higher demands to QoS. In mobile networks with high bandwidth, such as 3G/LTE, the bandwidth will shift rapidly in different positions. We call this bandwidth instability, which is the cause of the degradation of performance. However, Westwood TCP or the other popular TCP cannot response quickly to this situation. In this paper, we verify the problem mentioned above of varied TCP protocols. After that, we propose an improved fast recovery mechanism based on Westwood TCP. The new mechanism can adjust the congestion window in time when the bandwidth shifts.

Original languageEnglish
Title of host publicationProgress in Applied Sciences, Engineering and Technology
PublisherTrans Tech Publications
Pages1947-1952
Number of pages6
ISBN (Print)9783038350996
DOIs
StatePublished - 2014
Event2014 International Conference on Materials Science and Computational Engineering, ICMSCE 2014 - Qingdao, China
Duration: 20 May 201421 May 2014

Publication series

NameAdvanced Materials Research
Volume926-930
ISSN (Print)1022-6680

Conference

Conference2014 International Conference on Materials Science and Computational Engineering, ICMSCE 2014
Country/TerritoryChina
CityQingdao
Period20/05/1421/05/14

Keywords

  • Bandwidth shift
  • Mobile communication
  • Non-congestion
  • TCP flow control
  • Westwood

Fingerprint

Dive into the research topics of 'Improving Westwood over bandwidth instability'. Together they form a unique fingerprint.

Cite this