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Resource-on-Demand Schemes in 802.11 WLANs with Non-Zero Start-Up Times

Ortin, Jorge and Donato, Carlos and Serrano, Pablo and Banchs, Albert (2016) Resource-on-Demand Schemes in 802.11 WLANs with Non-Zero Start-Up Times. [Journal Articles]

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Increasing the density of access points is one of the most effective mechanisms to cope with the growing traffic demand in wireless networks. To prevent energy wastage at low loads, a resource-on-demand (RoD) scheme is required to opportunistically (de)activate access points as network traffic varies. While previous publications have analytically modelled these schemes in the past, they have assumed that resources are immediately available when activated, an assumption that leads to inaccurate results and might result in inappropriate configurations of the RoD scheme. In this paper, we analyse a general RoD scenario with N access points and non-zero start-up times. We first present an exact analytical model that accurately predicts performance but has a high computational complexity, and then derive a simplified analysis that sacrifices some accuracy in exchange for a much lower computational cost. To illustrate the practicality of this model, we present the design of a simple configuration algorithm for RoD. Simulation results confirm the validity of the analyses, and the effectiveness of the configuration algorithm.

Item Type: Journal Articles
Uncontrolled Keywords: Analytical models, Wireless LAN, Computational modeling, Energy consumption, Wireless communication, Switches, Numerical models.
Depositing User: Carlos Donato Morales
Date Deposited: 09 Nov 2016 11:09
Last Modified: 04 Jul 2017 09:07

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