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15 - Resource allocation for green communication in relay-based cellular networks

from Part IV - Wireless access techniques for green radio networks

Published online by Cambridge University Press:  05 August 2012

By
Umesh Phuyal ,
Satish C. Jha  and
Vijay K. Bhargava
Edited by
Ekram Hossain ,
Vijay K. Bhargava  and
Gerhard P. Fettweis
Umesh Phuyal
Affiliation:
University of British Columbia, Canada
Vijay K. Bhargava
Affiliation:
University of British Columbia, Canada
Ekram Hossain
Affiliation:
University of Manitoba, Canada
Vijay K. Bhargava
Affiliation:
University of British Columbia, Vancouver
Gerhard P. Fettweis
Affiliation:
Technische Universität, Dresden
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Summary

Introduction

The energy efficiency of wireless communication systems and their impact on the environment have been largely ignored in the past during the design and implementation of existing wireless networks. Increasing energy-consumption in these networks has been recently identified as a global problem due to its adverse effects on the environment and increasing cost of operation [1]–[5]. Cellular systems constitute a major part of wireless communications and their use in daily life is increasing more than ever [6]. Mobile devices are expected to surpass personal computers as the main web-accessing devices in the near future [7]. Therefore, mobile communications can contribute up to 15-20% of the overall energy-consumption in information and communication technologies (ICT) [7], which can no longer be disregarded.

The total energy-consumption of ICT itself is difficult to estimate because studies vary depending on the definition of ICT, the methodology used to generate the estimates, and the proportion of a device's energy consumption that is attributed to ICT [8, 9]. Several studies have suggested that the fraction of overall electricity consumption due to ICT infrastructure corresponded to around 7.8% in the European Union in 2005 [10], which is expected to rise to 10.9% by 2020. Around 3% of the world's electricity consumption is attributed to ICT, contributing to about 2% of worldwide CO2 emission [1, 9, 11, 12]. It is, therefore, apparent that there is an urgent need to design a sustainable cellular wireless communication system by developing energy-efficient (green) technologies.

Type
Chapter
Information
Green Radio Communication Networks , pp. 331 - 356
Publisher: Cambridge University Press
Print publication year: 2012

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