An Efficient Physical Resource Block Assignment for Dense Femtocell Networks

Femtocells have proved to be an effective solution for handling the ever increasing demands for wireless data without incurring additional deployment costs. Deployment of these low cost, miniature base stations not only improves network robustness but also facilitates efficient location specific services for mobile users. However, dense deployment of femtocells comes with the cost of increased interference. To handle this additional interference without significantly affecting spectrum efficiency, smart assignment of wireless resources is necessary among femtocells. In this paper, we suggest a technique to intelligently reuse the available wireless resources among interfering femtocells so as to improve spectrum reuse and energy efficiency. Additionally, the suggested technique also shows improvement in system blocking for all possible deployment scenarios. Obtained results are verified using extensive simulations.