LTE base station providing radio interface to UE and connecting to EPC.
Description
The Evolved NodeB (eNodeB) is the LTE base station that provides the radio interface (Uu) to the User Equipment (UE). Unlike 3G architecture, the eNodeB integrates the functions previously split between NodeB and RNC.
The eNodeB handles radio resource management, scheduling, handover decisions, compression, and encryption. It connects to the EPC via the S1 interface and to other eNodeBs via the X2 interface.
Purpose & Motivation
The eNodeB was designed for LTE's flat architecture, eliminating the RNC layer to:
- Reduce latency (fewer hops) - Simplify network architecture - Enable faster handovers via X2 - Support distributed scheduling
Key Features
- ✓Radio resource management
- ✓Dynamic scheduling
- ✓Handover execution
- ✓Header compression
- ✓Ciphering/deciphering
- ✓Connection mobility control