A channel borrowing CAC scheme in two-tier LTE/LTE-Advance networks
Olusegun O. Omitola, Viranjay Mohan Srivastava · 2017
To improve the performance of LTE in the framework of LTE-Advanced, different areas such as multiple MIMO, OFDMA, small cells and carrier aggregation have been considered. In small cells, femtocells emerged as a key radio access technique for increasing the coverage and capacity of mobile cellular networks in LTE-Advanced. They are low-power cellular base stations and offer the most cost effective way of overcoming bandwidth restrictions and coverage issues. When use with a CAC scheme, more calls can be admitted into the macrocell/femtocell area and extended coverage can be achieved. In this work, a channel borrowing CAC scheme in two-tier LTE/LTE-Advanced networks has been proposed. The advantage of this scheme is presented by the simulation output with the proposed scheme performing better than the conventional scheme in terms of call blocking probability and resource utilization while a negligible drop in performance is noticed in terms of the call dropping probability.