Leveraging multiuser diversity for adaptive hybrid satellite-LTE downlink scheduler (H-MUDoS) in emerging 5G-satellite network

摘要

In order to achieve ubiquitous coverage and service continuity in future 5G network, satellite-based access is the best solution to complement the terrestrial LTE-A. In light of this, we introduce a channel-aware hybrid scheduling technique on the basis of satellite-LTE spectrum sharing. According to the user-experienced channel, base stations (eNodeB) and the satellite will work cooperatively. The eNodeB mainly provides service in urban area for high density population. Meanwhile, the satellite will perform either offloading, providing service for under-served users, or extra coverage for users in rural and remote areas having no coverage of eNodeB. Leveraging the multiuser diversity, we implement a new metrics computation method for hybrid satellite-LTE downlink scheduler (H-MUDoS). Compared with other existing schedulers, simulation results clearly demonstrate the high performance of H-MUDoS in terms of spectral efficiency in addition to improvement of the quality-of-service requirements and capacity maximization.