Improved Handover Management with Call Admission Control Strategy in Integrated Macrocell Femtocell Networks

Abstract

Good Mobile coverage and better data rate is key to customer satisfaction. For latest 4G and 5G technologies as well 5 bar mobile coverage is required to perform at its best. High bandwidth applications, huge penetration of smart phones and tremendous data traffic demand makes traditional cellular network or macro-cell network insufficient to fulfill customer requirement. Small cell technology like femtocell helps these latest mobile communication technologies to achieve their goal of better coverage and high data rate. Femtocells are low power, efficient, and low-cost way to achieve better coverage. It has ability to boost mobile signal in indoor or in areas with little or no mobile coverage. It also offloads macrocell traffic. Some studies on wireless usage revels that more than 75% data traffic and 60% voice call traffic is originated indoor. If indoor traffic gets offloaded, then macrocell can utilize this capacity for other outdoor subscriber. This is biggest motivation for femtocell network development. newlineFor successful deployment of femtocells in predominant macrocell network seamless communication in between these two is must. For uninterrupted communication, handover should be carefully handled between femtocell and macrocell when user is moving around femtocell. Handover management is quite challenging in integrated macrocell and femtocell network because of random deployment of femtocell in planned macrocell network and small coverage area of femtocell. Minimum number of signaling during handover, seamless handover, fast handover, and the unnecessary handover minimization are the main concern for mobility management for macrocell/femtocell integrated network. The proposed research work concentrates on seamless handover and minimization of unnecessary handover. It optimizes among the new call blocking probability, handover call blocking probability, and bandwidth utilization too.