Course Details
This course seeks to explain how interworking can be supported between 5G and 4G networks, with focus on Dual Registration as one technique, coupled with N26 connectivity as an alternative technique. In so doing, both idle and connected mode mobility will be examined, with analysis of an N26 Handover for 5GC to EPC mobility, and vice versa. The course also includes focus on EPS and RAT Fallback mechanisms available for voice, including Emergency Services Fallback.

Gavin Mitchell
Mpirical Trainer
Gavin heads up Mpirical’s training product portfolio, which includes all course development alongside the development of NetX. Gavin’s main area of focus is 4G and 5G core networks, with considerable expertise gained over the 20 years of training experience he has within the mobile telecommunications space.
£95
Individual Course
Course Contents
Interworking with LTE:
- Interworking Key Concepts.
- Single and Dual Registration Mode.
Single and Dual Registration Mode Mobility:
- 5GC to EPC Mobility (Dual Registration Mode).
- EPC to 5GC Mobility (Dual Registration Mode).
- Mobility with Single Registration Mode Supported.
Architectural Considerations:
- Architecture for 5G and 4G Interworking.
- N26 Reference Point.
Idle Mode Mobility Procedures (with N26):
- 5GC to EPC Mobility (Single Registration, Idle Mode).
- EPC to 5GC Mobility (Single Registration, Idle Mode).
- 4G GUTI to 5G-GUTI Mapping.
5GS to EPS Handover (N26 Supported):
- Scenario.
- Procedure.
EPS to 5GS Handover (N26 Supported):
- Scenario.
- Procedure.
Fallback Mechanisms:
- EPS and RAT Fallback.
- High Level Fallback Procedure.
- Emergency Services Fallback.
£95
Individual Course
Available as part of our Package Options
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£95
Individual Course
£895
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