Wi-Fi Offload

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.
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Course Introduction
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Section 1 - Wi-Fi Offload Architecture
Section 2 - Wi-Fi Offload Initial Procedures
Section 3 - Wi-Fi Offload Mobility and Interworking

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.

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.

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.

The Institute of Telecommunications Professionals (ITP)

The ITP is the UK’s leading independent institution for people who work in telecommunications. It is dedicated to promoting the professional development of members through Professional Registration, training, mentoring and qualifications. The ITP collaborates with regulators, government associations and other leading bodies on projects that are important to the future of the industry. It has worked with businesses including; BT, Cable & Wireless Worldwide, Alcatel-Lucent, Huawei and Vodafone.  Find out more about The ITP and how you can become a member.

The Continuing Professional Development Standards Office (CPD)

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