Greedy Search Algorithm Based Two Stage Energy Saving Technique for Dense LTE-A HetNets

TitleGreedy Search Algorithm Based Two Stage Energy Saving Technique for Dense LTE-A HetNets
Publication TypeConference Proceedings
Year of Conference2017
AuthorsNarasimhan, H., R. Kashyap, A. V. Vikram, R. C. Deepthi, and P. Wali
Conference NameInternational Conference on Advances in Computing, Communications and Informatics (ICACCI)
KeywordsDept. of Electronics and communication Engineering.

In the near future, because of its growing popularity and improved support for increased traffic demands from subscribers, a very dense deployment of small cells is expected in LTE-Advanced heterogeneous networks (HetNets). While this kind of deployment is expected to prepare LTE-A networks to serve the subscribers better, it will further increase their energy consumption thereby raising the carbon footprint on the environment. Hence, there is a rising need to design energy saving mechanisms for dense LTE-A HetNets. In this work, we propose a novel two stage technique to opportunistically minimize the count of base stations in a dense LTE-A HetNet, required to serve the users traffic, whose schedule is obtained from any scheduling policy that the network employs, in every scheduling interval. We employ a greedy algorithm to minimize the count of the base stations in each scheduling interval. The proposed algorithm is shown to have a polynomial time complexity making it a viable solution for the scheduling time resolution that LTE-A employs. Extensive simulations show that the proposed technique results in substantial energy saving under various traffic conditions and base stations density.