Improving TCP performance over multi-hop wireless networks

Beizhong Chen, Ivan Marsic, Ray Miller

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

1 Scopus citations

Abstract

In multi-hop wireless networks, unlike the wired ones, two main factors affect the TCP performance. First, the maximum throughput is reached for a specific congestion window that is very difficult to detect under dynamically changing network traffic. Second, the excessive control traffic consumes channel bandwidth more severely than in the wired case. Our analysis and simulations show that, over high-speed connections, the much shorter ACKtcp packets consume the channel capacity comparable to the much longer data packets. Motivated by this insight, we first propose using different routes for data and ACK flows in a grid sensor network which achieves 60~100% performance gain. After that, we reformulate and improve an existing idea for TCP performance improvement by further lowering the number of control packets compared to the known methods. Extensive simulations show that this improves the TCP throughput up to 200% compared to the regular TCP, in long-hop wireless networks.

Original languageEnglish (US)
Title of host publicationThe 68th IEEE Vehicular Technology Conference, VTC 2008-Fall
DOIs
StatePublished - 2008
Event68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference - Calgary, AB, Canada
Duration: Sep 21 2008Sep 24 2008

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252

Other

Other68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference
Country/TerritoryCanada
CityCalgary, AB
Period9/21/089/24/08

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

Keywords

  • Performance improvement
  • TCP
  • Wireless networks

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