AP-STA association control for throughput maximization in virtualized WiFi networks
Mahsa Derakhshani
Xiaowei Wang
Daniel Tweed
Tho Le-Ngoc
Alberto Leon-Garcia
2134/34901
https://repository.lboro.ac.uk/articles/journal_contribution/AP-STA_association_control_for_throughput_maximization_in_virtualized_WiFi_networks/9564662
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.
2018-09-17 13:10:20
Wireless local area networks (WLANs)
IEEE 802.11 standard
AP-STA association
Airtime control
Throughput
Markov chain
Geometric programming
Virtualized wireless networks
Mechanical Engineering not elsewhere classified