And Call Flows [2021] Download Hot - 4g Lte Evolved Packet Core Epc Concepts
Demystifying 4G LTE: Evolved Packet Core (EPC) Concepts and Call Flows
Security and Reliability
Home Subscriber Server (HSS)
: A central database containing subscriber profiles and authentication data. Understanding the "Attach" Call Flow Demystifying 4G LTE: Evolved Packet Core (EPC) Concepts
3GPP TS 23.401:
This is the primary document covering the GPRS enhancements for E-UTRAN access, detailing the architecture and every major call flow in the EPC. Connects the LTE network to external IP networks (PDNs)
Bearers (The Data Pipeline)
The EPC is a flat, all-IP architecture designed to reduce latency. It consists of four primary network elements: ATTACH vs
- Connects the LTE network to external IP networks (PDNs).
- Allocates IP addresses to UEs.
- Enforces Policy and Charging rules (PCRF).
- Performs Deep Packet Inspection (DPI) for billing.