Wi-Fi System Engineering

As service providers try to deal with our unquenchable thirst for Internet connectivity, the role of Wi-Fi has grown from a simple wireless LAN technology to a critical element of the communication mix. This course therefore focuses on the IEEE 802.11 family of technologies; 802.11n (Wi-Fi 4), 802.11ac (Wi-Fi 5) and 802.11ax (Wi-Fi 6) and in so doing, explains the architecture and operation of a Wi-Fi network.
Intermediate |
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Section 1 - Wi-Fi Architecture

Topic areas covered include:

  • The Building Blocks of a Wi-Fi Network:
    • Basic Service Set.
    • Extended Service Set.
  • Wi-Fi and the IEEE:
    • IEEE and the Wi-Fi Alliance.
    • Wi-Fi and Radio Frequency.
    • Wi-Fi Capabilities.
  • Wi-Fi Frames and Addressing:
    • Wi-Fi and the OSI Model.
    • Wi-Fi Frame Structure.
    • Wi-Fi Addressing in Operation.
  • Wi-Fi and Cellular Interworking:
    • Interworking with 4G.
    • Interworking with 5G.
    • Wi-Fi Calling.
Section 2 - Wi-Fi Operation

Topic areas covered include:

  • Finding the Wi-Fi Network:
    • 802.11 Frame Types.
    • Scanning for Wi-Fi.
    • Probing for Wi-Fi.
    • Tracking Stations.
  • Wi-Fi Security – Part 1:
    • Authentication.
    • Open System.
    • Simultaneous Authentication of Equals.
  • Joining the Wi-Fi Network:
    • Association.
    • Wi-Fi Hotspots.
    • Wi-Fi Enhanced Open.
    • Wi-Fi Passpoint.
  • Wi-Fi Security Part 2:
    • 802.1x.
    • PSK and SAE.
    • EAPOL.
  • Mobility in the Wi-Fi Network:
    • Reassociation.
    • Fast BSS Transition.
Section 3 - Channel Access

Topic areas covered include:

  • Carrier Sensing Multiple Access:
    • Contention Resolution.
    • Network Allocation Vector.
  • Access Coordination:
    • The Coordination Functions.
    • Interframe Spacing.
    • Random Back Off.
  • Enhanced Distributed Channel Access:
    • Hybrid Coordination Function.
    • Arbitration Interframe Space.
    • Transmission Opportunity.
    • EDCA Parameter Set.
Section 4 - Wi-Fi 4, 5 and 6

Topic areas covered include:

  • Technology Evolution:
    • Wi-Fi 4, 5 and 6 Capabilities.
    • OFDM Principles.
  • Wi-Fi 4:
    • Wi-Fi 4 Characteristics.
    • MIMO Principles.
  • Wi-Fi 5:
    • Wi-Fi 5 Characteristics.
    • MU-MIMO.
  • Wi-Fi 6:
    • Wi-Fi 6 Characteristics.
    • OFDMA.
    • Target Wake Time.
    • BSS Colouring.