The outcome of the 3GPP SAE (System Architecture Evolution) technical study and specification work is a set of standards that specifies the evolution of the packet core network for GSM/GPRS and WCDMA/HSPA to an all-IP architecture, and enables a feature-rich “common packet core” for radio accesses developed within 3GPP and also by other standardization forums. This common packet core is referred to as EPC (Evolved Packet Core) and the full system is known as EPS (Evolved Packet System), which includes support for 3GPP radio access technologies (LTE, GSM, and WCDMA/HSPA) as well as support for non-3GPP access technologies. Unlike its predecessor, EPC provides support for multiple access technologies and provides for mobility between them, ...

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