Session 5b - Wi-Fi 6 NEW FEATURES- OFDMA, MU-MIMO, BSS Coloring, TWT

This is a free online semester course about Wi-Fi Technology Fundamentals. To find out more details about course content and material please visit: https://www.candelatech.com/course.php

#OFDMA #MU-MIMO #BSScoloring #Targetwaketime

Timestamps:

0:00 Introduction
0:23 Recap
5:00 Wi-Fi 6 Generation
6:02 The Backward Compatibility Problem
9:48 What is new with 802.11ax(WiFi6)
12:48 1024 QAM
16:17 Concept of OFDMA
22:10 How does OFDMA increase spectral efficiency?
23:38 OFDM
26:16 802.11ax OFDM PHY Changes
27:27 Longer Guard Interval for better Range
29:03 Resource Units
33:22 Downlink OFDMA Frame Exchange Process
38:30 Uplink OFDMA Frame Exchange Process
41:29 Multi User-MIMO Basics
45:28 Downlink Mu-MIMO in 802.11ac
50:01 DOwnlink/Uplink Mu-MIMO in 802.11ax
51:15 BSS Coloring
56:10 Target Wake Time (TWT)
59:10 References