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Demystifying 4G LTE: Evolved Packet Core (EPC) Concepts and Call Flows
The Initial Attach procedure is the most critical call flow in LTE. It is the process by which a device identifies itself to the network, gets authenticated, and establishes its first "always-on" connection. Demystifying 4G LTE: Evolved Packet Core (EPC) Concepts
that separates control and data planes to improve performance and scalability. 2. Key Architectural Components 3GPP TS 23
- 3GPP TS 23.501: "Evolved Packet Core (EPC) architecture"
- 3GPP TS 24.301: "Non-access-stratum protocol specification"
- Cisco: "Evolved Packet Core (EPC) Architecture"
- Ericsson: "EPC: The Core of 4G LTE Networks"