New! Includes sneak preview of the highlights of IEEE 802.11ax to come out later this year!
Instructor: Daniel Wong
Wednesday, March 15, 2017 - 9:00am to 4:30pm EDT
Online via WebEx
- Course Description
- Course Content
- Learning Objectives
- Who Should Attend
- Course Materials
- About the Instructor: Daniel Wong
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WiFi systems are the most widely deployed wireless technologies in the world today. Yet, they receive less attention these days than cellular technologies like LTE. Despite the fact that WiFi systems carry higher volumes of mobile data, operate at higher data rates than LTE, they are almost like commodity items that people don't think too much about but rather, take for granted.
However, WiFi systems are actually very sophisticated systems that were created to satisfy difficult and challenging requirements. For example, they operate in unlicensed bands, with very severe emission limits; also, they need to provide high data rates because they are in direct "competition" with wired LANs using technologies like Ethernet with super-fast rates; furthermore, in some scenarios, WiFi systems are deployed in a somewhat distributed manner, without strong centralized control. Thus, challenges of interference management and resource sharing arise. Additionally, different types of traffic might need to be given different treatment (QoS), resulting in additional challenges from the resource sharing and interference management perspectives. These other technical challenges have been handled over the years (as different members of the WiFi family of technologies have been created) through a variety of solutions and approaches, some of which are pretty ingenious from an engineering point of view.
We will explore these along with the solutions and approaches. Examples of such creative solutions include the various coordination functions at the MAC layer (e.g., DCF, PCF, etc.) spread spectrum, OFDM, etc., to handle challenging constraints at the physical layer while trying to achieve high data rates.
NEW - Just added! The latest high-rate Wi-Fi technology, 802.11ax (also known as High Efficiency Wireless) will come out later this year. Following in the traditions of 802.11n and 802.11ac, and extending them to even higher data rates, pre-standard 802.11ax products are already emerging in the market. Join us for a sneak preview of the highlights of 802.11ax.
Who Should Attend
Wireless and telecom engineers, researchers, and students will find value. Prerequisites: typical first two years of a college electrical engineering course, an introduction to communications systems, or equivalent knowledge from work experience in wireless / telecom engineering.
Take this course to:
- Gain a systems perspective of a complex set of technologies put together into practical systems to meet real-world requirements for certain high-demand applications
- Deepen your understanding and appreciation for the design choices and tradeoffs of WiFi systems via numerous comparisons with other wireless systems
Daniel WongPresident, Daniel Wireless LLC, IEEE WCP
K. Daniel Wong is President of Daniel Wireless LLC, a California-registered company that provides consulting and training in wireless, networking and software. He has over 20 years experience in wireless communications, both in industry and academia. Daniel is also an experienced speaker and teacher, having taught many highly-rated university level courses, industry short courses and tutorials at conferences, to a wide range of students from industry, government and academia. He is a member of the Practice Analysis Task Force that helped create IEEE's WCET certification program, and a co-author and co-editor of "A Guide to the Wireless Engineering Body of Knowledge" (WEBOK). Daniel is also the author of "Wireless Internet Telecommunications" (Artech House, 2004) and "Fundamentals of Wireless Communication Engineering Technologies" (Wiley, 2012). Daniel graduated with a BSE (with Highest Honors) from Princeton University, and an MSc. and Ph.D from Stanford University, all in electrical engineering.
- Understand WiFi systems from a systems perspective - learn how the different components are put together and work together
- Learn how to design and architecture WiFi deployments to optimize usage of WiFi technologies
- Explain the pros and cons, and the tradeoffs involved, of using various members of the WiFi family of systems, for various applications
- Explore ideas for solving problems posed by requirements for new communications systems (with WiFi and its requirements as an example)
- Compare and contrast wireless technologies more accurately and with deeper insight and understanding than before
WiFi vs. Cellular
- Differences in requirements
- Differences in design philosophy
WiFi Physical Layer
- Physical layer procedures
- Physical layer enhancements, including for higher data rates
WiFi MAC layer
- RTS / CTS, etc.
- Enhancements to the MAC layer
WiFi - other protocols at the network layer and beyond
WiFi latest developments and future directions
- Sneak preview of 802.11ax