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Title: Exploiting multi-user diversity in wireless LANs with channel-aware CSMA/CA
Authors: Wang, Xiaowei
Derakhshani, Mahsa
Le-Ngoc, Tho
Keywords: Computer networks
Wireless networks
Issue Date: 2015
Publisher: © IEEE
Citation: WANG, X., DERAKHSHANI, M. and LE-NGOC, T., 2015. Exploiting multi-user diversity in wireless LANs with channel-aware CSMA/CA. IN: Proceedings of 2015 IEEE 26th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2015), Hong Kong, China, 30 August-2 September 2015, pp.1227-1232.
Abstract: This paper presents a channel-aware access scheme for Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) aiming to take advantage of multi-user diversity and improve throughput, while supporting distributed and asynchronous operation. By dynamically adjusting the contention window of each station (STA) according to its channel state, this method prioritizes STAs that gain most from using a channel, and hence, enhances channel utilization in comparison with a simple random access scheme. To model the proposed Adaptive CSMA/CA (A-CSMA/CA) protocol, a three-dimensional Markov chain is developed. With the aid of such model, performance of the proposed A-CSMA/CA is analytically studied in terms of saturation throughput. Furthermore, illustrative results confirm that A-CSMA/CA significantly improves the throughput, specifically in a large network.
Description: © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Version: Accepted for publication
DOI: 10.1109/PIMRC.2015.7343486
URI: https://dspace.lboro.ac.uk/2134/21338
Publisher Link: http://dx.doi.org/10.1109/PIMRC.2015.7343486
ISBN: 9781467367820
ISSN: 2166-9589
Appears in Collections:Conference Papers and Contributions (Mechanical, Electrical and Manufacturing Engineering)

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