When a UE stops transmitting data for a specific period, the eNodeB initiates a context release to free up radio resources.
You hit "Play." The streaming app requests the video file. The data travels from the internet → P-GW (where it’s metered) → S-GW (across the backbone) → eNodeB (the cell tower) → your phone. But here’s the magic: the EPC dynamically creates a Dedicated Bearer specifically for video. This is a VIP express lane with guaranteed bitrate. Your music app updates in the background over the slower Default Bearer, while your show flows uninterrupted over the Dedicated Bearer. No buffering. No competition.
: The UE sends an Attach Request containing its identity (IMSI or GUTI) through the eNodeB to the MME. When a UE stops transmitting data for a
: A central database containing subscriber profiles and authentication vectors required by the MME to verify users.
The is the framework that provides converged voice and data on a 4G Long-Term Evolution (LTE) network. Unlike previous generations, the EPC features a flat, all-IP architecture that unifies circuit-switched and packet-switched sub-domains into a single packet-switched domain. Core Concepts of LTE EPC But here’s the magic: the EPC dynamically creates
A scalar value (1 to 9) dictating delay, packet loss reliability, and priority.
The UE sends an attach request to the eNodeB, establishing a signaling link. No buffering
All traffic, including voice, is treated as IP packets. 2. EPC Architectural Components and Nodes