Wi-Fi System Engineering
- Duration: 2 days or 12 hours
- Level: Level 3
Wi-Fi System Engineering
Wi-Fi or more accurately IEEE 802.11 technology has become widespread over the past decade and can now be found in as diverse locations as trains and planes as well as in offices, homes, coffee shops, airports etc. This course sets out to explain how this technology operates through a combination of theory and practical exercises using protocol analysers to capture real network traces. The course also covers Wi-Fi Direct in addition to addressing security, quality of service and power management issues.
Who Should Attend
This course is designed for Technical Staff involved in the development and deployment of Wi-Fi technology or Product Managers requiring a detailed insight into the operation of a Wi-Fi network.
Pre-learning
Pre-learning is provided to prime those attending the instructor led phase. Each lesson is based on an interactive online format and should take about 30mins to complete. The pre-learning lessons are:
- Test of Understanding - Try the online check to see how much you know.
- Wi-Fi Architecture.
- Wi-Fi Operation.
- Course Outline
Divided into 4 sections, the topics covered will include:
Section 1: Network Operation (6 hours)
- Network Elements - Station, Wireless Medium, Access Point and Distribution System.
- Network Configurations - Ad-hoc, Wi-Fi Direct, LAN, Access and Mesh.
- IEEE Physical Layers - 802.11 Alphabet Soup.
- Regulation and Interoperability.
- The Physical Layers - CCK, DSSS and OFDM.
- Contention Resolution and Framing.
- Initial Procedures and IP Connectivity.
- Increasing Capacity with MIMO.
- Wi-Fi Direct - Architecture and Operation.
- White-Fi.
Section 2: Wi-Fi Security (2.5 hours)
- Security Vulnerabilities - A brief overview of WEP.
- Robust Security Networking - IEEE 802.11i and the Wi-Fi Alliance’s WPA/2.
- IEEE 802.1x, Controlled / Uncontrolled Ports.
- Enterprise Security - EAP, TLS, TTLS, PEAP, LEAP, EAP-SIM etc.
- SoHo Security - EAPOL, TKIP and the associated weaknesses.
- Frame Format Modifications.
Section 3: Wi-Fi Quality of Service (2.5 hours)
- Why Quality of Service for Wi-Fi?
- The Options - EDCA and HCCA.
- Contention Based Access - AIFS, Access Categories and Contention Windows.
- Controlled Access - Polling and TXOPs.
- Controlling Quality of Service - ADDTS, Traffic Streams and TSPECs.
- Direct Link Operation.
Section 4: Power Management (1 hour)
- Automatic Power Save Delivery.
- WMM Power Save.
- 802.11n Power Save Features.
- Wi-Fi Direct Power Save.