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Title: AP-STA association control for throughput maximization in virtualized WiFi networks
Authors: Derakhshani, Mahsa
Wang, Xiaowei
Tweed, Daniel
Le-Ngoc, Tho
Leon-Garcia, Alberto
Keywords: Wireless local area networks (WLANs)
IEEE 802.11 standard
AP-STA association
Airtime control
Markov chain
Geometric programming
Virtualized wireless networks
Issue Date: 2018
Publisher: © IEEE
Citation: DERAKHSHANI, M. ... et al, 2018. AP-STA association control for throughput maximization in virtualized WiFi networks. IEEE Access, 6, pp.45034-45050.
Abstract: To manage and enable service customization among multiple internet service providers (ISPs) sharing the common physical infrastructure and network capacity in virtualized Wi-Fi networks, this paper models and optimizes access point-station (STA) association via airtime usage control. More specifically, an optimization problem is formulated on the STAs’ transmission probabilities to maximize the overall network throughput, while providing airtime usage guarantees for the ISPs. As the proposed optimization problem is inherently non-convex, an algorithm to reach the optimal solution is developed by applying monomial approximation and geometric programming iteratively. Based on the proposed 3-D Markov-chain model of the enhanced distributed channel access protocol, the detailed implementation of the optimal transmission probability of each STA is also discussed by manipulating medium access control parameters. The performance of the developed association and airtime control scheme is evaluated through numerical results. For both homogeneous and non-homogeneous STA distributions, numerical results reveal performance gains of the proposed algorithm in improving the throughput and keeping airtime usage guarantees.
Description: © 2018 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.
Sponsor: This work was supported by various Natural Sciences and Engineering Research Council of Canada (NSERC) grants.
Version: Published
DOI: 10.1109/ACCESS.2018.2864679
URI: https://dspace.lboro.ac.uk/2134/34901
Publisher Link: https://doi.org/10.1109/ACCESS.2018.2864679
ISSN: 2169-3536
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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