A3 in open RAN

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The use of A3 in open RAN will be an important part of the solution to specific open RAN challenges for telcos. This report reviews the significance of A3 in Open RAN, xAPP and rAPP market opportunities and identifies eleven A3 requirements in developing Open RAN capabilities for telcos.


Format: PDF filePages: 30 pagesAuthor: Charlotte PatrickPublication Date: July 2023

Table of Contents

  • Executive Summary
    • The need for A3 within open RAN
    • A3 market development
    • Actions for telcos and vendors
  • Table of Contents
  • Table of Figures
  • Quick review: What is open RAN?
  • Overview of the xApp/rApp market and opportunities for vendors
    • rApp market
    • xApp market
    • Assessing the potential of rApps and xApps
  • A3 requirements in open RAN
    • Interference management
    • Channel estimation
    • RAN design and planning
    • Handover management
    • Load balancing
    • Traffic steering
    • RAN management
    • Beamforming
    • Service-related
    • Power management
    • The use of A3 in the SMO
  • Conclusion
  • Index

Table of Figures

  • Figure 1: A3 opportunities within open RAN
  • Figure 2: O-RAN overall logical architecture
  • Figure 3 The availability and need for r/xApps across RAN functions
  • Figure 4: The requirement for intelligence and automation in open RAN
  • Figure 5 Interference detection
  • Figure 6: Uplink channel prediction
  • Figure 7: AI and cluster-based congestion relief
  • Figure 8: Beamforming optimiser rApp


Technologies and industry terms referenced include: A3, MLlifecylce management, non-real-time app (rApp), open RAN, orchestration, RAN intelligence controller, RIC, SMO