5G NR Log Analysis – L2- All Layers Covered

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About Course

Learning 5G NR Log Analysis – L2 (Layer 2) for beginners is crucial for understanding the data transmission and signaling processes that occur between the user equipment (UE) and the radio access network (RAN). Layer 2 in the 5G NR protocol stack includes key components like the Media Access Control (MAC) layer, Radio Link Control (RLC), and Packet Data Convergence Protocol (PDCP). Beginners should start by learning how to interpret logs related to these layers, including procedures for scheduling, retransmissions, HARQ (Hybrid Automatic Repeat Request), and data encryption. Tools such as Wireshark and commercial network analyzers can assist learners in capturing and analyzing real-world 5G NR logs, helping them understand issues like data loss, retransmissions, and scheduling delays. Mastering these concepts enables troubleshooting and optimizing network performance in the evolving 5G ecosystem.

Mastering 5G NR Layer 2 log analysis can significantly enhance career prospects in network optimization, troubleshooting, and performance engineering roles. Companies like Ericsson, Nokia, Huawei, Qualcomm, and T-Mobile are actively hiring experts in 5G RAN performance to enhance the quality and reliability of their networks. This expertise is highly valued for roles that involve ensuring efficient data transfer, low latency, and high throughput, such as network performance engineer or telecom RAN engineer. The applications of L2 log analysis are crucial for improving service quality, monitoring mobility events, and optimizing user experience in real-time. Target learners are typically telecom engineers, network performance analysts, and wireless communication enthusiasts with a focus on 5G technologies. In interviews, candidates are often tested on their understanding of 5G NR Layer 2 protocols, log analysis techniques, and the ability to identify and resolve network issues related to throughput, congestion, and data integrity.

This course covers all the layers of the L2 including RLC, PDCP, MAC, SDAP

Note: Refer to 3gpp specification numbers:

5G NR MAC: 38.321

5G NR RLC: 38.322

5G NR RLC: 38.323

5G NR SDAP: 37.324

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What Will You Learn?

  • You will have easy access to comprehensive knowledge of both fundamental and advanced aspects of 5G-NR.
  • Upon completion of the course, your understanding and imagination of the technology will be significantly enhanced.
  • Upon completion of the course, you will have cultivated critical thinking and debugging skills that will enable you to effectively analyze and troubleshoot.

Course Content

Basic 5G L3 Call Introduction

  • Lesson1

Basics of 5G MAC Protocol

Basics of 5G RLC Protocol

Basics of 5G PDCP Protocol

Basics of 5G SDAP Protocol

Basic RRC Configurations for 5G L2 Layers

Running the Setup and Collecting the Logs – Types of Logs: Text file, Wireshark pcap files

Detailed L2 Log Analysis covering MAC

Detailed L2 Log Analysis covering RLC

Detailed L2 Log Analysis covering PDCP

Detailed L2 Log Analysis covering SDAP

Time Stamp Specific Log Analysis in 5G MAC Layer Context

Time Stamp Specific Log Analysis in 5G RLC Layer Context

Time Stamp Specific Log Analysis in 5G PDCP Layer Context

Time Stamp Specific Log Analysis in 5G SDAP Layer Context

Examining Important L2 Config parameters covering all L2 Layers

Throughput Checking from L2 view.

Pay load Analysis from MAC, RLC, PDCP, SDAP View

Final Trouble shooting Tips from L2 User Plane view

Some gNB Scheduler Thoughts for Throughput improvements(Activation of few features Discussion)

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