In a bid to improve both network capacity and data throughput, service providers are increasingly turning to Wi-Fi as a viable addition to their network infrastructure. This course explains how Wi-Fi offload is supported in terms of providing a seamless transition between the two radio technologies, tracking the architecture required, the mobility options available and the fundamental concepts of operation.
Intermediate |
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Section 1 - Wi-Fi Offload Architecture

Topic areas covered include:

  • Wi-Fi Offload Architecture Fundamentals:
    • Drivers for Wi-Fi Offload.
    • Network Architectures:
      • Trusted Non-3GPP Access.
      • Untrusted Non-3GPP Access.
  • Mobility Mechanisms:
    • Host Based Mobility.
    • Network Based Mobility:
      • PMIPv6.
      • GTP.
    • Multi Access PDN Connectivity.
    • Non-seamless Wi-Fi Offload.
  • Network Architecture:
    • Trusted Non-3GPP Access (GTP):
      • UE, Access Point, TWAG, PDN-GW, HSS, AAA Server, PCRF, ANDSF.
      • Protocol Stacks and Reference Points.
  • Roaming Architectures:
    • Home Routed.
    • Local Breakout.
Section 2 - Wi-Fi Offload Initial Procedures

Topic areas covered include:

  • Initial Procedure Fundamentals:
    • Bearer Models and Bearer Mapping.
  • Network Discovery and Selection:
    • Network Discovery:
      • RAN Assistance Information.
      • ANDSF Rules.
    • Accessing the Wi-Fi Network:
      • Joining a Wi-Fi Network.
  • Initial Attach:
    • EAP Authentication (Part 1):
      • Detailed Signalling Evaluation.
    • Session Creation and Management:
      • Detailed Signalling Evaluation.
    • EAP Authentication (Part 2):
      • Detailed Signalling Evaluation.
Section 3 - Wi-Fi Offload Mobility and Interworking

Topic areas covered include:

  • Mobility and Interworking Fundamentals.
  • Wi-Fi Mobility:
    • Access Point Channel Reports.
    • Wi-Fi Reassociation.
    • 802.11 Amendments:
      • 802.11k, 802.11r.
  • Wi-Fi to LTE Handover:
    • Detailed Signalling Evaluation.
  • LTE to Wi-Fi Handover:
    • Detailed Signalling Evaluation.
  • Wi-Fi Offload and Roaming:
    • Home Routed.
    • Local Breakout.