International Journal of Computer Applications
To provide enhance indoor coverage, Long Term Evolution (LTE) has been developed small cellular base stations called femtocells that can dramatically improve voice and data coverage for the indoor subscribers. Nevertheless, limited spectrum availability in the cellular networks causes severe interference issues in the neighboring femtocell users transmitting on the same sub-carriers. This paper proposed a Cluster-Aware Soft Frequency Reuse (CASFR) algorithm that assigns distinct set of Physical Resource Blocks (PRBs) to each interfering femtocells. According to algorithm first Femtocell Base Station (FBS) uses periodic messages from the Femto User Equipment (FUE) to identify the interfering femtocells.