Impact of Densification on Energy Efficiency in Wireless Access Networks
2012 (English)In: Globecom Workshops (GC Wkshps), 2012 IEEE, IEEE , 2012, 57-62 p.Conference paper (Refereed)
Mobile communication networks alone consume 0.5 percent of the global energy today. Rapidly growing demand for capacity will further increase the energy consumption. Thus, improving energy efficiency has recently gained great interest within the research community not only for environmental awareness but also to lower the operational cost of network operators. Base station deployment strategy is one of the key challenges to be addressed for fulfilling the future capacity demand in an energy efficient manner. In this paper, we investigate the relationship between energy efficiency and densification with regard to network capacity requirement. To this end, we refine the base station power consumption model such that the parameters are determined by the maximum transmit power and develop a simple analytical framework to derive the optimum transmit power that maximizes energy efficiency for a certain capacity target. Our framework takes into account interference, noise and backhaul power consumption. Numerical results show that deployment of smaller cells significantly reduces the base station transmit power, and thus shifts the key elements of energy consumption to idling and backhauling power. Network densification can only be justified when capacity expansion is anticipated.
Place, publisher, year, edition, pages
IEEE , 2012. 57-62 p.
, IEEE Globecom Workshops, ISSN 2166-0069
Energy Efficiency, Backhaul, Densification, Network Capacity, Power Consumption
IdentifiersURN: urn:nbn:se:kth:diva-104658DOI: 10.1109/GLOCOMW.2012.6477544ISI: 000320611800011ScopusID: 2-s2.0-84875679320ISBN: 978-1-4673-4941-3OAI: oai:DiVA.org:kth-104658DiVA: diva2:565759
2012 IEEE Globecom Workshops, GC Wkshps 2012; Anaheim, CA; United States; 3 December 2012 through 7 December 2012
ProjectsEnergy-efficient wireless networking (eWIN)
FunderICT - The Next GenerationWireless@kth
QC 201211092012-11-082012-11-082014-05-05Bibliographically approved