Utility Fair Optimisation of Antenna Tilt Angles in LTE Networks

Abstract

We formulate adaptation of antenna tilt angle as a utility fair optimisation task. This optimisation problem is non-convex, but in this paper we show that under reasonable conditions it can be reformulated as a convex optimisation. Using this insight, we develop a lightweight method for finding the optimal antenna tilt angles, making use of measurements which are already available at base stations, and suited to distributed implementation.

arXiv comment11 pages, submitted to IEEE/ACM Transactions on Networking