Dynamic Radio Resource Allocation Based on Location for Mobile Femtocell in Cellular Network

Mobile Femtocell (MFemtocell) has received a lot of attentions due to its potential to mitigate a poor connectivity for the cellular users during their travels for works, to schools, to shopping malls, etc. using the vehicles. However, deploying MFemtocell in existing macrocell/microcell communication cellular networks (i.e., Orthogonal Frequency Division Multiple Access/OFDMA based) faces more complex interference problems, since MFemtocell shares the same radio resources as the existing cells (macro/microcell) of conventional cellular networks and it is due to its mobility. To mitigate the effects of interference caused by those deployed MFemtocells, the radio resource allocation plays an important role and it needs to be carefully designed. This paper is the basic investigation to the use of MFemtocell on the bus traveling in the microcell areas of OFDMA cellular networks. During the travel of MFemtocell, we first explore the use of static radio resource allocation algorithm to study the problem and then we apply dynamic radio resource allocation algorithm based on MFemtocell location to explore its potential. The extensive simulation experiment has been carried out to explore the distribution of Signal to Interference plus Noise Ratio (SINR) as the parameter. The simulation results show that the dynamic radio resource allocation outperforms the static radio resource allocation and there is a significant gap for the performance improvement. The improvement achieved 15% in term of Cumulative Distribution Function (CDF) of SINR at 30 dB.