期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2019
卷号：7
期号：5
页码：3197-3202
DOI：10.15680/IJIRCCE.2019. 0705099
出版社：S&S Publications
摘要：This paper presents a framework to activate and deactivate micro nodes in a heterogeneous multi cell
LTE network, based on load and energy efficiency consideration. The framework exploits historical data (i.e., permacro-cell
load curves) to select a set of candidate switch-on/switch-off instants of microcells, assuming a limited
number of state changes is allowed in a day. The switching instants are instead determined online, by taking into
account the actual traffic as well as the load curves. Moreover, inter cell interference is fully accounted for. Our
simulations show that this framework allows a multi cell network to sustain peak-hour load when necessary and to
reconfigure to a minimum coverage baseline whenever feasible, thus saving power (up to 25% in our scenarios).
Moreover, the framework is robust, meaning that deviations of the actual traffic with respect to the prediction offered
by the load curves can easily be handled.
