IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516
Regular Section
Rate Adaptation Based on Collision Probability for IEEE 802.11 WLANs
Taejoon KIMJong-Tae LIM
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2008 Volume E91.B Issue 4 Pages 1227-1230

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Abstract

Nowadays IEEE 802.11 wireless local area networks (WLANs) support multiple transmission rates. To achieve the best performance, transmitting stations adopt the various forms of automatic rate fallback (ARF). However, ARF suffers from severe performance degradation as the number of transmitting stations increases. In this paper, we propose a new rate adaptation scheme which adjusts the ARF's up/down threshold according to the channel contention level. Simulation result shows that the proposed scheme achieves fairly good performance compared with the existing schemes.

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© 2008 The Institute of Electronics, Information and Communication Engineers
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