Abstract:

In the end 2004,in order to ensure the competitiveness of 3G technology in the next 10 years and beyond,3GPP has launched the long term evolution of 3G access network,as well as system architecture evolution of all-IP packet core network. The fundamental aim of this evolution is to support the increasingly demands of operators and users with higher data throughput and improved network performance. The author combines the two aspects and tries to analyze the long term development trend of future mobile communication system from the aspect of system architecture. At the end, the standardization and working plan are presented to help the reader know about the whole situation of SAE/LTE.

Key words: 3GPP LTE, 3GPP SAE, high level protocol