Radio access network design concept for the fourth generation mobile communication system

The growth in mobile multimedia services will accelerate over the next decade. This paper discusses service aspects and system requirements for the fourth generation mobile communication (4G) system that will allow us to provide higher-speed communications and deal with user demand in the next decade. This paper also proposes a new radio access network (RAN) structure suited to the 4G system. The principles of the proposed cluster-cellular RAN are localized handover processing and horizontal structure. The advantages of the proposed RAN are also discussed.