Evolution of the 3G Cellular Phone System

The cellular phone system is migrating from 2G to 3G, and from the perspective of the long-term evolution of the 3G system the study of the 3G RAN Long Term Evolution (LTE) is proceeding with the aim of realizing high speed multimedia services at 30 to 100Mbps. This paper introduces the LTE element technologies of the communications methods and network architecture and the associated efforts being made by NEC.