Hybrid Spectrum Arrangement and Interference Mitigation for Coexistence Between LTE Macrocellular and Femtocell Networks
When deploying two-tier LTE cellular networks with coexistence of macrocells and underlaid femtocells, the strategies of spectrum arrangement need to be investigated to efficiently utilize the scarce spectrum resource. Co-channel spectrum usage and dedicated-channel spectrum usage are two traditional strategies of spectrum arrangement. Nevertheless, there are pros and cons of them from the perspective of achievable network capacity in two-tier LTE network as they result in different amounts of available spectrum at each tier and disparate cross-tier interferences. To improve overall spectrum utilization, the authors propose a novel approach of spectrum arrangement, which is called hybrid spectrum arrangement, to take advantage of their merits.