Handover technique between femtocells in LTE network using collaborative approach

A great problem for LTE networks employed large number of femtocells using the self optimization and configuration capabilities is to reduce the operational efforts. The handover process is a key element that has to be considered to improve efficiently the performance of the adopted femtocell technology and LTE network. This paper is devoted to a femtocell-to-femtocell handover approach based on simple feedback technique and existence of interface working as signalling system (SS). This interface allows us to exchange the priority lists and other signalling messages between femtocells, and helps us to overcome the drawbacks to use the public internet serving as control messages paths to handle the handover process.