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CSI-IL-007 – Wi-Fi 5 – Very High Throughput (802.11ac) (formerly Wi-Fi 201 Advanced)

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CellStream, Inc. – Telecom Consulting and Training!            

1-Day Instructor Led Hands On Lab Class
Available in Web Based delivery
Minimum 10 students – Maximum 30 students


Course Description:

This course provides an in-depth discussion on the Wi-Fi 802.11n and 802.11ac specifications. This class is ideal for anyone looking for an in-depth understanding of WLANs and how they are evolving to support higher data rates and higher capacity enterprise solutions. wifi5 vhtsmall

The purpose of this course is to provide students with a detailed understanding of the IEEE 802.11n High Throughput standard. In addition to explaining the specifics of the 802.11n standard, this course also explains the underlying radio techniques that are deployed to attain the high data rates and the new deployment challenges that these radio techniques introduce, including coexistence and interference with existing infrastructures. Key features of emerging standard 802.11ac very high throughput will be discussed, and how this new technology will coexist with 802.11n.

This course assumes a solid understanding of how Wi-Fi works. Students not familiar with how devices connect and send data over Wi-Fi networks should attend the Wi-Fi 101 Foundation Course.

Course Objectives:

At the end of the course, the student will be able to:

  • Describe the enhancements provided by 802.11n over the previous standards
  • Define the 802.11n PHY and MAC changes that enable high data rate performance
  • Distinguish between the different MIMO techniques
  • List the challenges in implementing 802.11n and how to mitigate them
  • Discuss how the emerging 802.11 standards further complement and extend the capability of Wi-Fi networks
  • Recognize and describe 802.11n-appropriate acronyms and terminology (supplemental glossary provided by instructor)
  • Compare and contrast 802.11n with the new 802.11ac very high throughput standard


The target audience for this course is anyone in Engineering, Test, Customer Support, Technical Marketing, or even Sales and Marketing that requires either a detailed understanding of the 802.11n high throughput specification and deployment challenges, and seeks to comprehend the changes and implementation challenges of the new 802.11ac very high throughput standard, and how it can be applied to their job function.
Ideal candidates are:

  • Operations individuals that will provide 802.11 configuration and support services
  • Network Design Engineers that need to understand 802.11n and the emerging 802.11ac specification
  • Network Management individuals that are providing element and network management tools
  • Technical sales individuals that must be able to correlate features with functionality
  • Technical marketing individuals that want more than just a basic understanding of 802.11, and need to understanding the emerging bandwidth and MIMO requirements
  • Certification Track individuals that need to expand their knowledge and studies
  • Network Administrators


Course Prerequisites:

This course is designed to appeal to anyone needing to deepen their skills and knowledge of 802.11 and the challenges of delivering high data rate services over WLANs. The ideal student will have some experience in networking and operations, and has attended the WiFi 101 Foundation course.

Course Materials:

Students will be provided with a Course Student Guide via the Online School of Network Sciences as well as many course reference materials.

Related Content:

There are a number of related courses we offer that explore the technical aspects of both today’s and tomorrow’s wireless networks. 

Course Outline:

  • How Wi-Fi works
    • Review of the 802.11 Foundation course
    • Wi-Fi topologies
  • Introduction to IEEE 802.11n and 802.11ac
    • Applications and services requiring higher data rates
    • 802.11n,ac products and impact of the market
    • Tri-band radios
    • Wi-Fi Alliance timeline for 802.11ac certification
  • IEEE 802.11n Physical Layer
    • Contrasting 802.11g and n OFDM radios
    • 40 MHz channels and subcarrier allocation
    • Optimizing the guard interval
    • Achieving 600 Mbps
  • IEEE 82.11n Medium Access Control (MAC) Layer
    • 802.11n MAC layer improvements required to support higher data rates
    • Frame aggregation
    • Coexistence of 20 and 40 MHz systems
    • Mechanisms to protect 802.11n transmissions
  • Real-life 802.11n deployment
    • 802.11n radio interface
    • MIMO configuration options
    • Classifying 802.11 frames
  • Radio techniques underlying IEEE 802.11n
    • Understanding OFDM
    • How Spatial Multiplexing (SM) achieves higher data rates
    • Comparing and contrasting Spatial Multiplexing (SM) and Space Time Coding (STC)
    • Beamforming
    • Multi-user MIMO
    • Contrasting 802.11n and 802.11a OFDM attributes
  • IEEE 802.11ac Very High Throughput
    • Comparing and contrasting 802.11n and ac
    • Operating frequencies
    • Multi-channel solutions
    • High levels of modulation
    • Explicit beamforming using a sounding protocol
    • Improvements to frame aggregation
    • Wi-Fi Alliance wave 1 certification

Supplemental Information:

  • IEEE 802.11af White Spaces
    • TVWS Frequency Bands
    • White Spaces Databases
    • Channel Bandwidth and Data Rates
    • Radio Link Query Protocol (RLQP)
  • Interoperability with legacy devices
    • 802.11n coexistence with 802.11a,b,g equipment
    • Coexistence of 20 MHz and 40 MHz channel operations
    • 802.11ac coexistence with 802.11a,n equipment


Course Availability:

Contact us for schedule dates and times.

View the course calendar and browse for our schedule.


Course Description, Content, Outline, and Instructional Design are Copyright ©CellStream, Inc.


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