Achievable performance gain of IEEE 802.11 multi-rate link adaptation algorithm with cross-layer design

被引：1

作者：

School of Engineering and Applied Science, Aston University, Birmingham ^{[1
]}

B4 7ET, United Kingdom

不详 ^{[2
]}

SA2 8PP, United Kingdom

不详 ^{[3
]}

不详 ^{[4
]}

BS1 4ND, United Kingdom

机构：

[1] School of Engineering and Applied Science, Aston University, Birmingham

[2] College of Engineering, Swansea University, Swansea

[3] Simula Research Laboratory, Department of Informatics, University of Oslo, Oslo

[4] Toshiba Research Europe Limited, Telecommunications Research Laboratory, 32 Queen Square, Bristol

来源：

Int. J. Auton. Adapt. Commun. Syst. | / 1卷 / 42-59期

基金：

英国工程与自然科学研究理事会;

关键词：

Adaptive communications systems; Autonomous communications; Cross-layer design; IEEE; 802.11; Link adaptation; MAC; Markov chain; Medium access control; Performance modelling; Wireless networks;

D O I：

10.1504/IJAACS.2015.067704

中图分类号：

学科分类号：

摘要：

Link quality-based rate adaptation has been widely used for IEEE 802.11 networks. However, network performance is affected by both link quality and random channel access. Selection of transmit modes for optimal link throughput can cause medium access control (MAC) throughput loss. In this paper, we investigate this issue and propose a generalised cross-layer rate adaptation algorithm. It considers jointly link quality and channel access to optimise network throughput. The objective is to examine the potential benefits by cross-layer design. An efficient analytic model is proposed to evaluate rate adaptation algorithms under dynamic channel and multi-user access environments. The proposed algorithm is compared to link throughput optimisation-based algorithm. It is found rate adaptation by optimising link layer throughput can result in large performance loss, which cannot be compensated by the means of optimising MAC access mechanism alone. Results show cross-layer design can achieve consistent and considerable performance gains of up to 20%. It deserves to be exploited in practical design for IEEE 802.11 networks. Copyright © 2015 Inderscience Enterprises Ltd.

引用

页码：42 / 59

页数：17

共 15 条

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