Self-configuration Concept to Solve Physical Cell ID Conflict for SON LTE-based Femtocell Environment

Abstract

and Self-healing functions are the most important concepts for self-managing heterogeneous network. However, the concept of self-configuration can be used to solve various challenges in the femtocell deployment phase and also in the PCIs confusion and collision problems. However, the proposed solutions for interference mitigation are not satisfying and need further improvement. Two main reasons identified for this unsatisfactory, firstly the small number of femtocells used in the simulation scenario which can lead to high failure probability if applied under real enterprise environment, secondly; the provided solutions discussed only part of the problem,i.e. either in co-tier interference or cross-tier interference but not both. Thus the need arises for stable solution which can resolve the interference problem for both inter and intra scenarios. In addition among the tree types of approaches used to solve collision and confusion problems the Nokia Siemens approach was the best. Index Terms — Self-configuration, cross-tire and co-tier interference, SON, LTE-femtocell, interference. I