5G Accessibility KPI Engineering and Optimization
3h 30mIntermediate2025-12-09
Authors
Rahul Kaundal
Itelcotech
Course details
Take a technical deep dive into 5G network accessibility, equipping you with the skills you need to measure, analyze, and optimize the critical signaling procedures that determine successful user connections. Instructor Rahul Kaundal goes beyond theory and shows you how to master the key performance indicators (KPIs) that define network performance.
Get started by mapping high-level 5G architecture to the detailed call flows for initial access and registration. Learn how to conduct a granular analysis of foundational procedures like the Random Access Channel (RACH), Radio Resource Control (RRC), and PDU Session Establishment, calculating KPIs, adjusting parameters, and troubleshooting failures. By the end of this course, you’ll be prepared to systematically diagnose accessibility issues, improve network efficiency, and apply your skills to real-world 5G optimization challenges.
Get started by mapping high-level 5G architecture to the detailed call flows for initial access and registration. Learn how to conduct a granular analysis of foundational procedures like the Random Access Channel (RACH), Radio Resource Control (RRC), and PDU Session Establishment, calculating KPIs, adjusting parameters, and troubleshooting failures. By the end of this course, you’ll be prepared to systematically diagnose accessibility issues, improve network efficiency, and apply your skills to real-world 5G optimization challenges.
Concepts
Introduction
- Introduction
Overview of 5G Accessibility KPIs
- Introduction to 5G network performance metrics
- What are accessibility KPIs
5G Architecture and Network Registration Process
- High-level 5G system architecture
- 5G SA initial access and registration procedure
- Call setup flow in 5G - Overview
- Call setup steps - Detailed
The First Handshake - Random Access Channel (RACH)
- What is random access
- RACH functions and mapping
- Preamble formats sequence
- Preamble formats - Long sequence
- PRACH long sequence - Cell radius calculation
- Preamble formats - Short sequence
- PRACH short sequence - Cell radius calculation
- RACH parameters
- Preamble formats and cell radius
- How RACH root sequences works
- KPIs for RACH
- Importance of RACH
- Improving random access efficiency
- Optimizing RACH - Dynamic preamble allocation
- RACH impact on 5G use cases
Establishing Control - Radio Resource Control (RRC)
- Initial access procedure
- Radio resource control (RRC)
- RRC states
- UE state transitions
- RRC idle and connected state
- RRC setup success rate
- Service related KPIs
- RRC reconfiguration success rate
- RRC connection reestablishment
- RRC related timer T301
- RRC related timer T310
- Timer parameters and values
- RRC inactive profiles
- RRC connection establishment counters
- RRC connection release analysis
- Advanced RRC KPIs correlations
Getting on the Network - The Registration Process
- 5G NR registration process
- UE registration messages
- Network registration success rate
- Registration failure rate
- Mean time to registration
- Registration abnormality rate
- Network slice selection assistance information (NSSAI)
- Network slice selection during registration
- AMF selection and NSSAI handling in 5G registration
- NW slice registration success rate
- Mean registered subscribers
- Registration failures - Root causes
Setting Up the Service Path - PDU Sessions and QoS
- Context setups in 5G
- Initial context setup flow
- Context setup success rate KPI
- PDU session establishment
- Interfaces during PDU establishment
- PDU session establishment success rate
- QoS fundamentals
- QoS flow setup measurement points
- PDU session and QoS flow management
- QoS flow setup success rate
The Data Pipeline - Data Radio Bearers (DRB)
- Data radio bearer fundamentals
- DRB KPIs
The Complete Picture of Accessibility KPI
- CSSR
- Putting it all together - The accessibility KPI cheat sheet
Conclusion
- Next steps - Pathways to other key KPIs
- Conclusion