Handover management in heterogeneous network

Femtocells and picocells are becoming popular in the telecommunication industry in order to provide high data rate communication with superlative quality of service. The concept of dividing a large cell into numerous small cells is to reduce the blocking and dropping of calls in a cellular network. Integrating femtocell and macrocell will be the medium of transferring a large volume of calls from the macrocell to the femtocells by means of efficient handling. Hierarchical Cellular Networks (HCN) offer an improved utilization of the internal networks by allocating the high and low speed users to the picocell and femtocells respectively. In this paper, we present an integrated network and discuss the major issues of mobility management. We propose a Call Admission Control (CAC) scheme with optimized SINR in the femtocellular/macrocellular network which effectively handles various calls. We also propose a M/M/C Markov model for the two layers of HCN with a FIFO queue. Both of these schemes lowers the call dropping probability and the differences between them are also observed. Our proposed schemes will be very valuable for the people working in this type of research and industry to implement.