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

Hyogon Kim; Heejo Lee; Sangmin Shin

doi:10.1093/ietcom/e90-b.2.412

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 journal › Article › peer-review

3 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	412-416
Number of pages	5
Journal	IEICE Transactions on Communications
Volume	E90-B
Issue number	2
DOIs	https://doi.org/10.1093/ietcom/e90-b.2.412
Publication status	Published - 2007 Feb

Keywords

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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10.1093/ietcom/e90-b.2.412

Cite this

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AB - 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.

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

Abstract

Keywords

ASJC Scopus subject areas

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