A SON-Based Optimized Network Management System for Next-Generation Mobile Networks

The self-organizing networks (SON) technique is necessary to develop and manage efficiently a current complicated network system requiring various management work. For development of a SON system, it is very important but still laborious to design a coordination function to avoid performance degradation due to conflicts among multiple management algorithms. This paper proposes a SON-based optimized network management system for next-generation mobile networks using a simple decoupling-based SON coordinator. By analysing interactions and conflicts of control parameters and performance metrics of the management algorithms, we applied two types of decoupling methods in the SON coordinator according to situations; switching algorithms and embedding an algorithm into another. Those two methods generated a simple coordination rule by reducing the complexity of the whole decoupling problem. Simulation results in a femtocell-based wireless network showed effectiveness of the proposed methods. Keyword-Self-organizing network (SON), SON coordinator, SON conflict, Optimized management, Wireless mobile networks