Utility Fair Optimization of Antenna Tilt Angles in LTE Networks

We formulate adaptation of antenna tilt angle as a utility fair optimization task. This optimization problem is nonconvex, but in this paper we show that, under reasonable conditions, it can be reformulated as a convex optimization. Using this insight, we develop a lightweight method for finding the...

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Bibliographic Details
Published in:IEEE/ACM transactions on networking 2015-02, Vol.23 (1), p.175-185
Main Authors: Partov, Bahar, Leith, Douglas J., Razavi, Rouzbeh
Format: Article
Language:English
Subjects:
Antenna measurements
Antenna tilt angle
Antennas
Base stations
Interference
Long Term Evolution (LTE)
maximizing capacity
Optimization
proportional fairness
Signal to noise ratio
Throughput
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Summary:We formulate adaptation of antenna tilt angle as a utility fair optimization task. This optimization problem is nonconvex, but in this paper we show that, under reasonable conditions, it can be reformulated as a convex optimization. Using this insight, we develop a lightweight method for finding the optimal antenna tilt angles, making use of measurements that are already available at base stations, and suited to distributed implementation.
ISSN:1063-6692
1558-2566
DOI:10.1109/TNET.2013.2294965