802.11ax Training

802.11ax Training Course

802.11ax training, “High Efficiency WLAN” will covers all the enhancements in 802.11 PHY and MAC applied to 2.4 and 5GHz. Learn about 802.11ax, High Efficiency (HE) WLAN:

• How 802.11ax will improve spectrum efficiency and area throughput
• 802.11ax functional requirements
• Bands of Operation
• Backward compatibility and Coexistence
• 802.11ax System performance How 802.11ax will improve  real world performance in indoor and outdoor deployments
• How 802.11ax will deal with the presence of interfering sources, dense heterogeneous networks and in moderate to heavy user loaded APs
• Changes from 802.11ax (WiFi 6) to 802.11ax-2021 (WiFi 6E)
• Automated Frequency Coordination (AFC)
• 802.11be (WiFi 7)

Learning Objectives

Upon completion of this course, the participant will:

• Learn about the fundamental concepts and building blocks of 802.11ax
• Explain the 802.11ac evolution towards 802.11ax
• Illustrate about the core concepts on 802.11ax PHY and MAC layers
• Explain ideas behind OFDMA, MIMO spatial streams and Multi-user MIMO (MU-MIMO) features
• List 802.11ax network capacity improvement factors including OFDMA, MU-MIMO and BSS Coloring
• List 802.11ax peak throughput enhancements including 1024-QAM Modulation/Coding, Long OFDMA Symbol
• Explain 802.11ax PHY, MAC modifications and power efficiencies/device battery life
• List Coexistence mechanisms for different channels and outdoor reliability
• List 802.11ax deployment scenarios and configurations
• Describe 802.11ax-2019  evolution to 802.11ax-2021
• Learn about the fundamental concepts and building blocks of 802.11ax, 802.11ax-2021, WiFi 6E Certification and 802.11be (WiFI 7)
• Explain WiFi 6 evolution towards WiFi 6E and WiFi 7
• Describe WiFi 6E deployment scenarios and configurations
• Explain concepts behind Automated Frequency Coordination (AFC) system
• Learn about the evolution of WiFi 6E to WiFi 7

Course Content

Executive Summary of IEEE 802.11

• General description of the IEEE Std 802.11
• How wireless local area networks (WLANs) are different
• Wireless LAN, PAN, NAN and BAN
• Comparison between 802.11 and 802.15: Bluetooth/BLE 6LoWPAN and ZigBee
• 11 extended range for Internet of Things (IoT) and Machine to Machine (M2M) communications
• 802.11ax 11 architecture and protocols
• 802.11ax Vision and Use Cases
• 802.11ax Requirements
• Key 802.11ax Technologies and Building Blocks
• 802.11ax Drafts
• 802.11ac Evolution to 802.11ax
• 802.11 ax Enhancements and Design Considerations
• 802.11ax Router vs. Clients
• MAC Enhancements
• PHY Enhancements
• Implementation and Deployment Scenarios
• Deploying 802.11ax
• Modeling Environment
• Link Budget Calculations

IEEE Std 802.11 Architecture   

• Components of the IEEE Std 802.11 architecture
• 11 Basic Service Set (BSS)
• Differences among ESS, PBSS, and IBSS LANs
• Principles behind 802.11a/b/g/n/ac
• Differences between ESS and MBSS LANs
• Principles behind 802.11k/r/w/z/v/u/s/p
• Principles behind 802.11ac/ad/ay/ah
• Comparison of the IEEE 802.11, 802.15.1, 802.15.4 and 802.15.6 wireless standards

802.11 Systems and Bands

• IEEE 802.11 Variant
• High Throughput (HT)
• Very High Throughput (VHT)
• High Efficiency WLAN (HEW)
• Directional Multi Gigabit (DMG)
• Next Generation 60GHz (NG60)
• Technolgies for 5GHz, 2.4GHz, Below 6GH, Up to 60 GHz
• 4 GHz 802.11 channels
• 6 GHz WiFi band
• 5 GHz WiFi channels & frequencies
• 0 – 64.0 GHz ISM band (Regional variations apply)
• Channels: 58,32, 60.48, 62.64, and 64.80 GHz
• White-Fi
• 11af: 470 – 710 MHz
• 11af: TV white space (below 1 GHz)
• 11ah: 700 MHz, 860MHz, 902 MHz

Introduction to 802.11n and 802.11ac

• 802.11n and 802.11ac core concepts
• Principles behind 802.11an
• Principles behind 802.11ac
• Drivers for 802.11ac
• 11ac technology overview
• 11ac key requirements
• Regulatory Considerations
• 11ac Channelization
• 11n modulation and coding
• Differences Between 80211ac and 802.11n
• Standards-Based Beamforming
• RTS/CTS with Bandwidth Indication
• All A-MPDUs
• MIO and MU-MIMO
• Backwards Compatibility
• Coexistence
• Operational Scenarios

Introduction to 802.11ax

• High Efficiency (HE) Physical Layer
• IEEE 802.11ax standardization
• IEEE 802.11ax basics
• Frequency bands
• 802.11ax PHY and MAC enhancements
• 802.11ax PHY / radio interface
• Spatial Channel Models (SCM)
• Indoor and outdoor spatial channel models
• Outdoor spatial channel models
• UMi and UMa channel models
• Path Loss model

Technologies in 802.11ax

• State-of-the-art  MIMO and  MU-MIMO
• Principles behind OFDMA (Orthogonal Frequency-Division Multiple Access)
• OFDM vs. OFDA (orthogonal frequency division access)
• 160MHz PPDU, the default mapping per 20MHz
• Default mapping of the two HE-SIG-B channels for a 160 MHz HE PPDU
• HE Data field
• Tone plan
• Resource unit, edge and DC tones
• 160 MHz/80 MHz+80 MHz OFDMA building blocks
• LDPC coding scheme in the HE PPDU Data field
• 1024-QAM Modulation
• MCS10: 1024 QAM with 3/4 code rate
• MCS11: 1024 QAM with 5/6 code rate
• Multi-user (MU) features
• DL OFDMA and UL and DL MU-MIMO
• DL MU operation
• UL MU operation
• MU RTS/CTS procedure
• UL OFDMA-based random access
• Sounding protocol
• GCR BA operation

802.11ax MAC Functional Blocks

• Target Wake Time (TWT)
• Power Save
• Fragmentation
• Frame formats
• Sounding feedback
• Use of OBSS ,overlapping basic service sets
• OBSS interference handling

802.11ax Network Planning

• Setting coverage and capacity objectives and goals
• Determine network needs
• Capacity planning and performance prediction of 802.11ax
• Working with propagation models
• Type of  traffic and capabilities
• Predictive ad manual  site surveys

Wi-Fi 6E: 802.11ax-2021 in 2.4-GHz, 5-GHz and 6-GHz Bands

• Wi-Fi 6E: 802.11ax Networks in 2.4-GHz, 5-GHz and 6-GHz Bands
• 6th generation Wi-Fi extended to 6 GHz
• Ten 160-MHz channels, 2 Gbps throughput on mobile
• 2 GHz of greenfield spectrum
• Unmatched network capacity
• Wi-Fi 6E and Automated Frequency Coordination (AFC) System
• AFC System Reference Model
• What do AFCs mean for users?

Roadmaps of 802.11ax Evolution to 802.11be (WiFi 7)

• • Wi-Fi 7 Application Scenarios
  • Low-latency access
  • Up to 320 MHz Bandwidth
  • Higher-Order 4096-QAM
  • High orders of MU-MIMO and OFDMA
  • 16×16 MU-MIMO DL/UL
  • Enhanced OFDMA: Enhanced resource allocation in OFDMA
  • Multi-AP Cooperation: Enables redundancy at the 802.11 MAC New tools to avoid congestion delay
  • Multi-Link Power Save
  • Channel Sounding Optimization
  • EDCA (Enhanced Distributed Channel Access) with 802 TSN (Time-Sensitive Networking) features
  • TSN Traffic stream classification over 802.11 (VLAN tag)