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5G NTN Mastery: Complete 3GPP TR 38.821, TS 38.863 & Hands-On Amarisoft Testing

by Rajesh Kumar ยท in General ยท Last updated: August 8, 2026
Course Description
Non-Terrestrial Networks (NTN) are extending 5G connectivity beyond terrestrial networks using LEO, MEO, GEO satellites and High Altitude Platform Stations (HAPS). This course provides a comprehensive understanding of 5G NTN based on 3GPP TR 38.821 and 3GPP TS 38.863, combined with practical implementation and validation using the Amarisoft 5G Test Bed.
You will learn NTN reference scenarios, transparent and regenerative payload architectures, NG-RAN deployment models, physical layer enhancements, Timing Advance, PRACH, HARQ, Doppler compensation, MAC/RLC/PDCP/RRC protocol adaptations, mobility management, Conditional Handover, NG/Xn/F1 interfaces, feeder link switchover, and satellite access node requirements.
The course concludes with hands-on Amarisoft lab exercises, including simulated GEO and LEO deployments, NTN-to-Terrestrial handover, Conditional Handover, and protocol log analysis, enabling you to understand both the theory and practical validation of 5G NTN deployments.
What You Will Learn

Complete fundamentals of 5G Non-Terrestrial Networks (NTN)
GEO, MEO, LEO, HAPS, and airborne platform architectures
Transparent versus regenerative payload design
The six standardized NTN reference scenarios from 3GPP TR 38.821
NG-RAN deployment architectures for satellite networks
Physical layer enhancements for delay and Doppler compensation
Timing Advance, PRACH, HARQ, synchronization, and link budget analysis
MAC, RLC, PDCP, and RRC enhancements for NTN
Tracking Area management, paging, mobility, and Conditional Handover
Satellite ephemeris usage and moving cell concepts
NG, Xn, and F1 interface behavior over satellite links
Feeder Link Switchover and gateway mobility procedures
3GPP TS 38.863 implementation requirements
Amarisoft NTN configuration and protocol validation
GEO and LEO deployment testing
NTN to Terrestrial Network handover analysis
Conditional Handover testing and troubleshooting
Practical log analysis and standards-based validation

Hands-On Laboratory Exercises

Configure simulated GEO NTN using the Amarisoft Test Bed
Configure simulated LEO NTN deployment
Perform NTN to Terrestrial Network handover validation
Configure and analyze Conditional Handover (CHO)
Analyze protocol messages and signaling procedures
Validate satellite mobility behavior using Amarisoft logs

Who Should Take This Course?

5G RAN Engineers
Protocol Stack Developers
Telecom Software Engineers
System Integration Engineers
Wireless Research Engineers
Satellite Communication Engineers
NTN Solution Architects
Network Testing and Validation Engineers
Telecom Students and Researchers
Professionals preparing for 5G Advanced and 6G technologies

Prerequisites

Basic understanding of 5G NR architecture
Familiarity with the 5G protocol stack is recommended
Basic knowledge of Layer 1, Layer 2, and Layer 3 procedures
No prior satellite communication experience is required

Whether you are working in telecom R&D, protocol development, network testing, satellite communications, or preparing for next-generation 5G Advanced and 6G technologies, this course provides both the theoretical foundation and the practical skills needed to understand, deploy, test, and validate 5G Non-Terrestrial Networks using industry-standard specifications and real Amarisoft laboratory exercises.

External Reference:
https://www.3gpp.org/specifications-technologies/specifications-by-series

[migrated-from-learnpress]

Curriculum

7 Sections โ€ข 30 Lessons โ€ข 20 hour
1.1Defining NTN: Spaceborne (LEO, GEO, MEO) & Airborne (HAPS, UAS) platforms
1.2Key Components: Service Link, Feeder Link, NTN Gateway, ISL.
1.3Payload Types: Transparent (bent-pipe) vs. Regenerative (on-board processing) - "Mirror vs. Computer" analogy
1.4The Six Reference Scenarios (A, B, C1, C2, D1, D2) based on TR 38.821 Table 4.2-1/2
1.5Critical Metrics: Round Trip Delay (RTD), Doppler Shift, Differential Delay
1.6Examples: Comparing a GEO transparent satellite (Scenario A) for broadcasting with a LEO regenerative moving-beam satellite (Scenario D2/Starlink) for low-latency broadband
2.1Transparent Architecture(5.1)
2.2gNB Processed Payload(5.2.1)
2.3gNB-DU Processed Payload (Split Architecture)-5.2.2
2.4Protocol Stack Analysis
3.1Link & System Level Evaluations-6.1
3.2Physical Layer Control Procedures-6.2
3.3Uplink Timing Advance (TA) & RACH-6.3
3.4Delay-Tolerant HARQ-6.4
4.1User Plane Enhancements:MAC: Random Access (4-step & 2-step), DRX, Scheduling Requests
4.2User Plane Enhancements':PDCP: Extending Sequence Numbers and timers (t-Reassembly, t-Reordering) to handle high bandwidth-delay products.
4.3Control Plane Enhancements: Idle Mode Mobility: Tracking Area (TA) Management (Fixed vs. Moving TAs) and Paging Capacity.
4.4Control Plane Enhancements: Connected Mode Mobility: Handover challenges (frequency, measurement validity). Conditional Handover (CHO) based on Time, Location, or Ephemeris
4.5Control Plane Enhancements: Ephemeris Data: Providing and using satellite orbital data for UE positioning
5.1Connected Mode Mobility: Procedures for Intra-gNB, Inter-gNB, and Xn mobility in different architectures-8.3
5.2Transport Aspects: Characteristics of the Satellite Radio Interface (SRI) and Inter-Satellite Links (ISL)-8.4
5.3Feeder Link Switchover: Procedure for moving a LEO satellite from one NTN Gateway to another ("Make before Break")-8.7
6.1General -7.2.1
6.2Operating bands -7.2.2
6.3Channel bandwidth, SCS and spectral utilization-7.2.3
6.4Channel raster and sync raster-7.2.4
7.1TC1: NTN with simulated GEO and UE SIM
7.2TC2: NTN with LEO
7.3TC3: NTN to TN HO
7.4TC4: Conditional HO

Instructor

R

Rajesh Kumar

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