On the cross-layer impact of TCP ACK thinning on IEEE 802.11 wireless MAC dynamics

Hyogon Kim, Heejo Lee, Sangmin Shin

Research output: Contribution to journalArticle

2 Citations (Scopus)


ACK thinning refers to the technique to discard or reduce TCP acknowledgements (ACKs) for the purpose of diverting scarce bandwidth to TCP data traffic. It has been shown that under some circumstances the technique is effective to boost the TCP throughput on wireless links, in particular the IEEE 802.11 wireless LAN (WLAN). In this letter, however, we show that ACK thinning backfires under congestion due to its cross-layer impact on the 802.11 MAC dynamics. With the ACK filtering example, we demonstrate the phenomenon and analyze the cause. Based on the analysis, we show how the IEEE 802.11 contention window size control solves the problem.

Original languageEnglish
Pages (from-to)412-416
Number of pages5
JournalIEICE Transactions on Communications
Issue number2
Publication statusPublished - 2007 Feb



  • ACK thinning
  • Cross-layer interaction
  • IEEE 802.11
  • TCP ACK filtering

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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