Power Level Assignment and Base Station Placement Using Simulated Annealing for 4G-LTE Femtocell Networks in Multi-floor Buildings

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Published: Jul 21, 2020
Keywords:
Network planning Power level assignment Base station placement Linear programming Simulated annealing 4G-LTE femtocell networks

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Peerasan Thaweephawilai
School of Telecommunication Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand
Monthippa Uthansakul
School of Telecommunication Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand
Chutima Prommak
School of Telecommunication Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand
Chitapong Wechtaisong
School of Telecommunication Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand

Abstract

Femtocell Base Stations (FBSs) are widely used to improve data rates and cell coverage to the indoor service in Long Term Evolution (LTE) networks. With a proper network's design, a network deployment cost will be worth and a network performance will satisfy the users. Nevertheless, with an improper design, besides all of the foregoing will not achieve, an unpleasant problem such as a leakage signal from an indoor to outdoor area will occur. In this paper, we propose an optimization technique which is a collaboration between a Linear Programming (LP) and a Simulated Annealing heuristic technique (SA). We separate our optimization technique into two steps. In step one, we focus on minimizing the number of FBS to be installed by formulating a linear programming problem. In step two, we optimize the placement location and the transmit power level of installed FBS by using the SA heuristic. Our results show that the proposed technique can achieve a better performance trade-off between computation time and solution quality. Besides, when compared to linear programming technique, the proposed technique can reduce the summation of leakage signal up to 90%, the total power usage up to 45% and reduce a computation time more than 70%.

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How to Cite
Thaweephawilai, P., Uthansakul, M., Prommak, C., & Wechtaisong, C. (2020). Power Level Assignment and Base Station Placement Using Simulated Annealing for 4G-LTE Femtocell Networks in Multi-floor Buildings. Applied Science and Engineering Progress, 13(3), 246–255. Retrieved from https://ph02.tci-thaijo.org/index.php/ijast/article/view/241544
Issue
Vol. 13 No. 3 (2020)
Section
Research Articles

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