5G NR log analysis L1 -(PHY)

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About Course

Layer 1 (L1), also known as the Physical Layer (PHY), is the foundation of the 5G New Radio (NR) protocol stack. L1 handles tasks like data modulation, beam forming, synchronisation, and signal transmission over the air. Log analysis at this layer is crucial for understanding radio conditions, diagnosing physical layer issues, and optimising overall network performance. It helps in allocation of the radio resources such as PRB allocation as per the instruction given by the MAC Scheduler in the MAC Layers. It maintains both UL and DL Scheduling based on the technology configured for a particular deployment. This Log Analysis course has a greater impact in saving lot of time in issues analysis as a part of troubleshooting. Some of the scenarios, text logs and Wireshark tools are covered with live pcap logs capture. i Hope this course will become an invaluable tool for your day to day problem solving. This course has been designed considering 3gpp compliant devices and network vendors in mind so that, you will feel already aligned to your day to work. All the best and have a happy learning.

Pre-Requisites:

  • Completion of L1 Basic Understanding from 5G NR View is Mandatory.
  • Good Idea of 4G RAN access protocols, with interaction of L1 and L2 
  • Scheduler Concepts are added advantages but not mandatory to do the log analysis

Spec No: references

-3gpp Spec No- 38.211/212/213/214/215

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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
Pre-requisites expected: Basic L3 Call with UE and gNB Protocol Architecture atleast from 3gpp Point of view such as the communication across the layers along with Channel and Channel Mapping.

  • Lesson1
  • Lesson2
  • Lesson3

Understanding Deployment and Configurations from L1 View

Basics of BWP, SSB, CORESET, REG, Point A, Aggregation Level, CCE, PDCCH Formats

Basic of Numerology, Frame Structure, Slots, Mini Slots, Applications

DCI Format analysis, Resource Allocation Basis

UE and gNB Logs Introduction from PHY Layer view

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

Detailed L1 Log Analysis covering PHY and MAC Interactions

Time Stamp Specific Log Analysis in 5G PHY Layer Context

Analysing L1 Measurements, Cell Conditions, impacts on Latencies and Throughput.

PHY PUCCH UL Analysis from UE View

PHY PUCCH DL Analysis from gNB View

PHY PDSCH UL Analysis from gNB View

PHY PDSCH DL Analysis from UE View

TDD Log Analysis with Low Cost Devices – Working of Real Hardware

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