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Mobile Information Systems
Volume 2017, Article ID 4380676, 12 pages
https://doi.org/10.1155/2017/4380676
Research Article

Self-Planning of Base Station Transmit Power for Coverage and Capacity Optimization in LTE

1Department of Communication Engineering, University of Málaga, 29071 Málaga, Spain
2Ericsson, 29590 Málaga, Spain

Correspondence should be addressed to V. Buenestado; se.amu.ci@gbv

Received 7 April 2017; Accepted 11 July 2017; Published 22 August 2017

Academic Editor: Antonio de la Oliva

Copyright © 2017 V. Buenestado et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A computationally efficient self-planning algorithm for adjusting base station transmit power in a LTE system on a cell-by-cell basis is presented. The aim of the algorithm is to improve the overall network spectral efficiency in the downlink by reducing the transmit power of specific cells to eliminate interference problems. The main driver of the algorithm is a new indicator that predicts the impact of changes in the transmit power of individual cells on the overall network Signal to Interference plus Noise Ratio (SINR) for the downlink. Algorithm assessment is carried out over a static system-level simulator implementing a live LTE network scenario. During assessment, the proposed algorithm is compared with a state-of-the-art self-planning algorithm based on the modification of antenna tilt angles. Results show that the proposed algorithm can improve both network coverage and capacity significantly compared to other automatic planning methods.