부산대학교 도서관

In this paper, we propose a "user-centric Radio Access Network (RAN) architecture" towards Beyond 5G. In a Beyond 5G mobile networks, connectivity to the network with sufficient quality should always be provided to users who demand that various quality requirements be met anytime and anywhere in the physical space. To achieve this, it is necessary to eliminate the degradation of radio quality at the cell edge, which requires the installation and cooperation of a much larger number of base stations in higher density. Furthermore, to overcome the imbalance in communication quality between the uplink and downlink still found in 5G, it is also necessary to eliminate the limitation of user terminals by virtually increasing the number of antennas and expanding transmission power for the number of antennas of user terminals and the power consumption of user terminals. On the other hand, a new RAN management is expected to provide users with their respective radio access capability through flexible cooperation of the base station around them. In this paper, we describe in detail the specific technical issues and our approach to realize the user-centric RAN architecture.