Hybrid Lte- Fractional Frequency Reuse (ffr) in User Mobility Environment

Long Term Evolution (LTE) is broadly available to the world. The upcoming trend in LTE-Advanced (LTE-A) emphasizes the enhancement in spectrum efficiency, capacity and cell-edge user throughput and thus highlights the small cell technologies. With the advantage of small size, Femtocell is able to be deployed at "Died zone" and thus satisfying the service expectation particularly to cell-edge users. Femtocell is also an inexpensive compact base station to increase mobile operators’ capacity and coverage at the same time increases users' data throughput. With the increase of small cells in the network, the proposed Fractional Frequency Reuse (FFR) which intelligently reuse the spectrum helps to mitigate InterCell Interference (ICI), at the same time, improve spectrum efficiency. A hybrid topology which incorporated Femtocell and FFR is analyzed in this paper. The available spectrum is divided into four ranges and reused intelligently. The hexagonal cells are further divided into inner and outer regions. Inner region radius and resource is intelligently controlled to achieve maximum performance and user fairness. The performance of the system is observed over a short period of time by considering users' mobility.The system is improved and User Satisfaction (US) is maintained at high level over a period of time.