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Energy Optimization of a Cellular Network with QoS Guarantee

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Energy Optimization of a Cellular Network with QoS Guarantee

Ansari, Arash (2017) Energy Optimization of a Cellular Network with QoS Guarantee. Masters thesis, Concordia University.

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Abstract

The problem of energy optimization in a cellular network has been studied from different perspectives: sleep patterns, network interference, association of users and base stations, allocation of resources (bandwidth and power), etc. All these aspects have been discussed individually in previous works. However, none of the existing works has succeeded in proposing an accurate solution to an exact mathematical model that takes into account several of these parameters simultaneously.

In this work, we propose a modeling of several network parameters (i.e., base station transmission power and activity, user assignment, bandwidth allocation, interference, and data rate) and their interaction in order to minimize the network energy consumption. An exact solution of the proposed model, which solves the energy optimization problem in an LTE network, is presented afterward. The proposed solution guarantees to satisfy all the users with a minimum quality of service (data rate), assuming a proper call admission mechanism has been put in place.
The accurate solution allows energy savings of up to 50\% in a moderately loaded network, which leads to energy savings of up to twice than of the heuristic proposed by Piunti \textit{et al.} (2015). Moreover, a strategy to solve the model using column generation method is proposed and investigated. Various numerical results are presented on hexagonal and randomly generated cellular networks.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Computer Science and Software Engineering
Item Type:Thesis (Masters)
Authors:Ansari, Arash
Institution:Concordia University
Degree Name:M. Comp. Sc.
Program:Computer Science
Date:24 August 2017
Thesis Supervisor(s):Jaumard, Brigitte
Keywords:Energy Optimization - LTE - Cellular Networks - Sleep Mode
ID Code:982853
Deposited By: ARASH ANSARI
Deposited On:10 Nov 2017 21:38
Last Modified:18 Jan 2018 17:55
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