Femtocell channel selection in a two-tier wireless network

Interference management is a key issue of heterogeneous network where operator-deploying macro base stations and user-deploying femto base stations coexist. Due to a large number of femtocells, centralized cell planning and interference management are impractical. In this paper, we propose a distributed frequency resource selection algorithm for self-organizing femtocell networks. The algorithm deals with inter-cell interference among femtocells as well as cross-tier interference between macrocell and femtocell. Simulation results show that proposed scheme improves throughputs of femto users as well as those of macro users.