Analysis of TCP performance over mobile ad hoc networks

Gavin Holland, Nitin Vaidya

Research output: Contribution to journalArticlepeer-review


Mobile ad hoc networks have attracted attention lately as a means of providing continuous network connectivity to mobile computing devices regardless of physical location. Recent research has focused primarily on the routing protocols needed in such an environment. In this paper, we investigate the effects that link breakage due to mobility has on TCP performance. Through simulation, we show that TCP throughput drops significantly when nodes move, due to TCP's inability to recognize the difference between link failure and congestion. We also analyze specific examples, such as a situation where throughput is zero for a particular connection. We introduce a new metric, expected throughput, for the comparison of throughput in multi-hop networks, and then use this metric to show how the use of explicit link failure notification (ELFN) techniques can significantly improve TCP performance.

Original languageEnglish (US)
Pages (from-to)275-288
Number of pages14
JournalWireless Networks
Issue number2-3
StatePublished - 2002
Externally publishedYes


  • Explicit feedback
  • Mobile ad hoc networks
  • Performance evaluation
  • TCP
  • Transport protocols
  • Wireless networks

ASJC Scopus subject areas

  • Information Systems
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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