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Sensors 2016, 16(2), 167;

Implicit Block ACK Scheme for IEEE 802.11 WLANs

Department of Information and Communication Engineering, Chosun University, Gwangju, 501-759, Korea
Author to whom correspondence should be addressed.
Academic Editor: Davide Brunelli
Received: 19 September 2015 / Revised: 21 December 2015 / Accepted: 30 December 2015 / Published: 28 January 2016
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The throughput of IEEE 802.11 standard is significantly bounded by the associated Medium Access Control (MAC) overhead. Because of the overhead, an upper limit exists for throughput, which is bounded, including situations where data rates are extremely high. Therefore, an overhead reduction is necessary to achieve higher throughput. The IEEE 802.11e amendment introduced the block ACK mechanism, to reduce the number of control messages in MAC. Although the block ACK scheme greatly reduces overhead, further improvements are possible. In this letter, we propose an implicit block ACK method that further reduces the overhead associated with IEEE 802.11e’s block ACK scheme. The mathematical analysis results are presented for both the original protocol and the proposed scheme. A performance improvement of greater than 10% was achieved with the proposed implementation. View Full-Text
Keywords: block ACK; IEEE 802.11e; overheads; MAC block ACK; IEEE 802.11e; overheads; MAC

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Sthapit, P.; Pyun, J.-Y. Implicit Block ACK Scheme for IEEE 802.11 WLANs. Sensors 2016, 16, 167.

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