Introduction to Wi-Fi
Over the past twenty years, Wi-Fi has played an ever more critical role in the way we communicate; be that surfing the web, sending emails, messaging or making calls. This introduction course explores how Wi-Fi actually works in terms of the latest 802.11n (Wi-Fi 4), 802.11ac (Wi-Fi 5) and 802.11ax (Wi-Fi 6) standards, including the associated certification programs from the Wi-Fi Alliance. The course then moves on to discuss several methods of determining a device’s location, before addressing Wi-Fi Security. Finally, Wi-Fi Calling is explored in terms of supporting seamless connectivity between Wi-Fi and the 4G cellular networks.
Introduction to Wi-Fi
- Topic areas covered include:
- What is Wi-Fi?
- The IEEE 802.11 Standards:
- 802.11a/b/g/n/ac/ax.
- 802.11ad/ah.
- The Wi-Fi Alliance Programmes.
- Wi-Fi Network Architecture:
- The Building Blocks of a Wi-Fi Network.
- Basic Service Sets and Extended Service Sets.
- Using Mesh Technology to Extend Coverage.
- Finding and Joining a Wi-Fi Network:
- Wi-Fi Frames.
- Wi-Fi Addressing.
- Finding a Wi-Fi Network:
- Scanning for Wi-Fi.
- Probing for Wi-Fi.
- Joining a Wi-Fi Network:
- Authentication.
- Association.
- Sending and Receiving Data over Wi-Fi:
- OFDM and OFDMA.
- Beam Steering and MU-MIMO.
- Modulation and Increasing Data Throughput.
- Uplink and Downlink Data Transfer:
- 802.11a/b/g/n.
- 802.11ac/ax.
- Wi-Fi Location Services:
- Tracking a Wi-Fi Station:
- Randomly Assigned MAC Addresses.
- Wi-Fi Positioning System.
- Wi-Fi Location.
- Wi-Fi Security:
- Wi-Fi Security Principles.
- Wi-Fi Protected Access 1, 2 and 3.
- WPA3 and Wi-Fi Easy Connect.
- Wi-Fi Calling and Seamless Mobility:
- 4G and Wi-Fi Calling.
- Wi-Fi Passpoint and Hotspot 2.0.