LTE RRC States Explained | ECM, EMM & 4G to 5G Transitions | 4G E2E Signaling Session 4 (Video)
In this Session 4 of the 4G End-to-End Signaling Course, we break down LTE RRC states, RRC Idle vs RRC Connected, LTE to 5G state transitions, and the role of ECM and EMM states in the EPC/core network.
You will learn how the UE is viewed from both the radio access side and the core network side, including how paging, mobility, handover, cell reselection, and service reachability work in LTE networks.
In this video, we cover:
- RRC Idle and RRC Connected in LTE
- LTE to 5G transition states
- LTE to 3G and 2G mobility overview
- ECM (EPS Connection Management) states
- EMM (EPS Mobility Management) states
- Mapping between RRC, ECM, and EMM
- UE behavior in idle mode and connected mode
- Network paging, tracking area awareness, and handover basics
- Foundation concepts needed before the LTE Attach procedure
