BANDWIDTH ALLOCATION ALGORITHM WITH USER MOBILITY DYNAMICS IN FEMTOCELL NETWORK
Nicholas O. Oyie, Kibet Langat, Stephen Musyoki · Communications · 2014
Fourth generation cellular networks provide ubiquitous broadband access to a growing number of mobile users worldwide.In this context, resource allocation in orthogonal frequency division multiple access femtocell network systems presents an important milestone towards realization of high-speed services.In this paper, we focus on impact of mobility dynamics on time/frequency allocation in femtocell network.We considered users' mobility dynamics taking into account the variation of their positions with time.We propose a scalable mobility-aware femtocell cluster-based resource allocation (M-FCRA) scheme based on cluster formation, clusterhead resource allocation with user mobility awareness, and resource contention resolution.M-FCRA formulates the frequency/time resources allocation mathematically as a min-max optimization problem and generates synchronized resource reservation requests that maximize bandwidth utilization and quality of service.The results show that M-FCRA performs better than femtocell clusterbased resource allocation (FCRA) algorithm at various signal to interference and noise ratio levels in terms of throughput satisfaction rate and spectrum spatial reuse.