Flight size auto tuning for broadband wireless networks

Ken Igarashi, Kenichi Yamazaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

The emergence of broadband wireless access technologies enables seamless Internet access in mobile environments. To fully utilize the broadband wireless bandwidth, it is critical to design a congestion control mechanism that can adjust the congestion window size according to the dynamics of the wireless network condition. A congestion window size that does not react properly to the degradation of channel quality injects excessive data segments into the network. This increases round trip time (RTT) and ultimately may cause packet losses. In the reverse setting, when the channel quality improves drastically, the congestion window should react fast enough to take advantage of the available bandwidth. This paper proposes Flight Size Auto Tuning (FSAT) as a new TCP variant. FS-AT adjusts the transmission rate according to the estimated available throughput and fluctuations in throughput to mitigate the network congestion while maintaining high network utilization. Moreover, FS-AT provides mechanisms to differentiate between the losses caused by channel errors and those by network congestion. Accordingly, the proposed method avoids unnecessary throughput reduction in case of channel errors, a well-known impediment of standard TCP schemes. FS-AT estimates the current available bandwidth from the received acknowledgments without requiring any modification at the receiver. FS-AT is implemented on Linux and the effectiveness of FS-AT is validated by the measured performance of FS-AT over HSDPA and the simulated performance over a fixed network.

Original languageEnglish
Title of host publicationProceedings of the 2009 ACM International Wireless Communications and Mobile Computing Conference, IWCMC 2009
Pages888-893
Number of pages6
DOIs
Publication statusPublished - 2009 Nov 30
Event2009 ACM International Wireless Communications and Mobile Computing Conference, IWCMC 2009 - Leipzig, Germany
Duration: 2009 Jun 212009 Jun 24

Publication series

NameProceedings of the 2009 ACM International Wireless Communications and Mobile Computing Conference, IWCMC 2009

Conference

Conference2009 ACM International Wireless Communications and Mobile Computing Conference, IWCMC 2009
CountryGermany
CityLeipzig
Period09/6/2109/6/24

Keywords

  • 3G network
  • HSDPA
  • TCP

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Software

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  • Cite this

    Igarashi, K., & Yamazaki, K. (2009). Flight size auto tuning for broadband wireless networks. In Proceedings of the 2009 ACM International Wireless Communications and Mobile Computing Conference, IWCMC 2009 (pp. 888-893). (Proceedings of the 2009 ACM International Wireless Communications and Mobile Computing Conference, IWCMC 2009). https://doi.org/10.1145/1582379.1582573