5G RAN Optimization

This course provides an overview of 5G RAN performance monitoring and optimization.

Performance KPIs within this course are investigated on a vendor independent perspective, focusing on the concepts and applications. Alongside with the analysis of different KPIs classes and monitoring reports, this course also boosts a comprehensive approach to network troubleshooting and optimization tasks.

This course aims to equip participants with advanced knowledge of the Radio access network and the ways of optimizing the 5G network for the betterment of users.

5G New Radio (NR) RAN Parameters Overview

• Idle mode measurements overview
  • SS-RSRP, SS-RSRQ, SS-SINR
  • CSI-RSRP, CSI-RSRQ, CSI-SINR
• Pathloss Model Analysis
• Channel model analysis
• Low/Mid/High bands configured & licensed parameters
• Numerology & Channel Bandwidth
• TDD frame structure
• UL/DL spatial multiplexing layers vs beamforming
• Analog/Digital Beamforming & number of supported beams
• Capacity - RRC connected users
• Cell peak throughput
• NSA EN-DC PDCP aggregation
• SA aggregation
• Low Band FDD MIMO antennas
  • FDD 400 MHz-2.6 GHz bands
  • 2T2R, 4T4R, 8T8R
  • TM3, TM4, TM7, TM8, TM9
• Mid Band TDD MIMO antennas
  • 2T2R, 4T4R, 8T8R MIMO antennas
  • TM3, TM4, TM7, TM8, TM9
• Mid/High Band TDD mMIMO antennas
  • 32T32R, 64T64R mMIMO AAS units
    • Elevation beamwidths vs. Azimuthial beamwidths
  • CSI-RS based Beam Management
    • CSI-RS vendor equipment port configuration (8, 16, 32)
    • Number of available beams
    • Beamwidth granularity
  • PCI planning 3GPP TS 28.541 spec
  • RACH planning
  • Review Exercises and Examples

5G New Radio (NR) SA Optimization

• Idle mode behavior review
• Cell search Optimization
• SSB synchronization
  • SSB Detection Probability vs. SINR
  • MIB & CORESET0 detection probabilty vs. SINR
  • SSB Coverage optimization (coverage improvements & detection probability enhancements)
• Initial Cell Selection optimization
  • Parameter check
  • Optional features review
• Initial Cell Reselection optimization
  • Parameter check (Priority, Inter RAT, etc)
  • SA Optional Features review
• Random Access successful performance analysis
• Random Access coverage improvements
  • RACH preample pattern vs. Cell range
  • LTE NSA accessibility success rate
  • 5G NSA accessibility success rate
  • 5G SA accessibility success rate
• TDD frame structure optimization
  • TDD special slot vs. Cell range
• NR Throughput optimization
  • Vendor specific RB capacity vs. SINR
  • Cross-Link Interference detection and solution
  • TDD frames optimization
  • DL/UL unbalance
  • UE power saturated
• SA Mobility Optimization
  • 5G SA mobility analysis based on KPIs and log files
• Exercises & examples

5G New Radio (NR) NSA Optimization

• 5G NSA EN-DC connectivity optimization overview
  • EN-DC abnormal NR leg drop analysis
  • 5G NSA EN_DC establishment success rate
  • 5G NSA EN_DC DRB retainability
  • 5G NSA EN_DC mobility analysis (eNodeB & gNB)
• 5G NSA re-establishment
  • EN-DC split bearer to LTE MCG bearer Analysis & Optimization
• NSA mobility optimization
• 5G NSA aggregation optimization
• Exercises & examples