Wrap-Up Documentation from the Fundamentals of Wi-Fi: Physics Always Wins

I’m incredibly grateful to AUC and Tony Gray for their invitation to Chris Dawe and I to present our workshop, Fundamentals of Wi-Fi: Physics Always Wins. While we’re not making our full slides available for this talk, we did want to provide some external-facing documentation for our talk that gives you some of the key materials that we used while making this talk.

How to Reach Us

Tom Bridge
Slack: tbridge
Github: tbridge

Chris Dawe
Slack: ctdawe

Books & Printed Material

Sometimes, you need to start with printed materials.

CWNA 107 Study Guide

The Wireless LAN Professionals organization is the certifying authority for professional WLAN Engineers, and their mission includes training and certification. the CWNA 107 Study Guide (and the now discontinued Sybex volume for the 106 exam that preceded it) is an excellent resource to understanding much of the Wireless sphere.

Online Resources

General References:

WLAN Pros Resources Page (Includes WLPC Sessions)

Certified Wireless Network Professionals

The home of vendor-independent technical certification for Wi-Fi

Revolution Wi-Fi

Andrew von Nagy’s site is home to comprehensive discussion and analysis of developments in Wi-Fi technology. Andrew is also the creator of a Capacity Planning tool that will provide guidance on access point needs based on a description of your fleet.

Capacity Planning Worksheet

Section 1: Wi-Fi and Radio Basics

Attenuation Values for Common Building Materials

History of 802.11 Specification, Justin Berg, George Mason University

Hedy Lamarr and George Antheil’s Patents

When George Antheil Met Hedy Lamarr

How OFDM Subcarriers Work

This piece was what unlocked the importance of OFDM to Wireless connectivity. Learning how it changed Wi-Fi forever helped me understand its importance.

Best 802.11ac Channel Map Ever

Choosing 802.11ac Channels in Australia

Rules of Tens and Threes

802.11ax Brings OFDMA

802.11 Alphabet Soup

Wi-Fi Certified 6

Section 2: Wi-Fi Basic Operations

Understanding 802.11 Management Frames

Explaining the Concept of a TXOP

Modulation & Coding Scheme Lookup Table

Section 3: Network Design

Aerohive High-Density Design Guide

The Dreaded Dragonfly

Mike Albano’s Client Capabilities List

BYO AP on a Stick Kit

Understanding WLAN Capacity, Darrel Derosia, WLPC Phoenix 2017

Watch this video to gain a greater understanding what turns out to be a vast gulf between vendor hardware performance specs and real-world scenarios with a mixed client base.

Divergent Dynamics: Wi-Fi Design and Deployment Methodology

Understanding Airtime Utilization

Section 4: Apple-specific Design Concerns

Apple Deployment Documentation (Appendixes include WiFi Specs for iOS and macOS Devices)
iOS Deployment Guide
macOS Deployment Guide

Apple’s two deployment guides supply Apple’s general recommendations for Wi-Fi networks (which aren’t too far from ours, generally), as well as Wi-Fi specs for Apple’s devices. Oddly, the iPad specs list is currently badly broken.

Enterprise Best Practices for iOS Devices and Mac Computers on Cisco Wireless LAN

Apple Roaming Documents
Apple TechNote: macOS Roaming
Apple TechNote: iOS Roaming

Advanced Roaming Technologies for iOS (discusses 802.11k, 802.11r, and 802.11v and their utility in roaming)

Section 5: Tools & Software

Wi-Fi Explorer (Lite, Regular, Pro)

Wi-Fi Signal

Airtool

Netspot

Wireshark

Metageek Channelyzer & Wi-Spy DBx

Ekahau Pro & Ekahau Cloud

Tamograph Site Survey

Section 6: Security

Podcast: Understanding the 4-way Handshake

David Acland’s Talk on Certificates, Signing and Hashes

KRACK Attacks

Analysis of SAE and WPA3

802.1X and EAP Types

10.12.5 and SHA-1 Certs