Energy Savings in Cellular Networks Based on Space-Time Structure of Traffic Loads

Jingbo SUN  Yue WANG  Jian YUAN  Xiuming SHAN  

IEICE TRANSACTIONS on Communications   Vol.E95-B   No.2   pp.591-594
Publication Date: 2012/02/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.591
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Energy in Electronics Communications
energy conservation,  mobile communication,  modeling,  load management,  

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Since most of energy consumed by the telecommunication infrastructure is due to the Base Transceiver Station (BTS), switching off BTSs when traffic load is low has been recognized as an effective way of saving energy. In this letter, an energy saving scheme is proposed to minimize the number of active BTSs based on the space-time structure of traffic loads as determined by principal component analysis. Compared to existing methods, our approach models traffic loads more accurately, and has a much smaller input size. As it is implemented in an off-line manner, our scheme also avoids excessive communications and computing overheads. Simulation results show that the proposed method has a comparable performance in energy savings.