Joint implementation of several LTE-SON functions

In SON enabled LTE networks many different SON functions may operate simultaneously in order to optimize the network performance. With the increasing number of SON functions the probability of conflicts and dependencies between them increases and become more challenging to handle. In this paper an integrated approach for two SON functions, namely handover optimization and load balancing combined with admission control is presented. In this approach the conflicts are solved using the combination of Fuzzy Q-Learning Control (FQLC) algorithm and a heuristic Diff_Load algorithm. The novelty of this approach lies in using of FQLC for adjusting more than a single parameter, namely the handover hysteresis and the time to trigger in order to simultaneously optimize more than one SON function. Working in parallel, the Diff_Load tunes the handover offset parameter. The proposed approach has been evaluated using the LTE-Sim simulator.