LTE; Technical Specifications and Technical Reports for an Evolved Packet System (EPS) based 3GPP system (V12.0.1; 3GPP TS 21.201 version 12.0.1 Release 12)
The present document identifies the 3GPP system specifications for Release 12. The specifications and reports of this Release have a major version number 12 (i.e. 12.x.y). The listed Specifications are required to build a system based on the Evolved Packet System. The high-level architecture of such a system is defined in 3GPP TS 23.002 [2] (figure 1b).