Femtocells, Interference Coordination & Next-Generation Wireless Systems

Опубликовано 18 августа 2016, 22:59

Recent years, have witnessed an explosive demand for cellular wireless data -- a trend that is not abating. Cisco, for example, estimates that wireless data may grow by as much as 38 fold by 2013. Meeting this demand affordably presents a major challenge for cellular operators and wireless engineers. One promising new technology for deploying radically cheaper networks is femtocells, which are small (typically < 1W) base stations installed in the customer's premises. With their smaller form factor, self-configuration capabilities, and ability to leverage the customer's backhaul, femtocells can be deployed at a fraction of the cost of traditional macrocellular networks. This talk will discuss a number of the technical challenges concerning femtocells, with a focus on problems of interference coordination. Devices in mixed femto / macro deployments often experience strong interference conditions not well-handled by traditional cellular power control. We offer alternative interference coordination methods based on subband scheduling -- a new technique available in 4G cellular systems.