CWNP (Certified Wireless Networking Professional) is widely recognized as the IT industry standard for vendor neutral enterprise Wi-Fi certification and training. CWNP publishes videos, white papers, blogs, and other materials that assist the networker in learning Wi-Fi technologies and preparing for CWNP certification exams. The WiSE article series is one of these CWNP thought leadership content initiatives.
About the WiSE Article Series:
Wireless is inherently complex; its study spans at least two engineering disciplines: Electrical Engineering and Computer Science. Add to this the nuances of various standards, vendor implementations, RF environments, and protocol interactions, and it is not uncommon to feel a little lost in understanding the various aspects of Wi-Fi network operation. In this series of short articles, we explain various Wi-Fi subtleties, to work toward a better understanding of Wi-Fi network deployments.
The WiSE article series editor is Tom Carpenter and the first 5 WiSE articles feature AirTight Networks wireless subject matter experts as CWNP guest bloggers.
1) Wi-Fi Throughput Algebra – Simplified
Author: Bhaskaran Raman, PhD. Read WiSE article 1
In this first article in a multi-part WiSE Article Series, Bhaskaran Raman explains the formulas you can use to estimate throughput on WLANs. This article simplifies Wi-Fi throughput algebra, to give a rule of thumb for what throughput to expect when taking into account at least the first order factors which affect all environments and tests. Read WiSE article 1
2) Wi-Fi Subtleties Explained (Parameters that Matter)
Author: Bhaskaran Raman, Ph.D. Read WiSE article 2
This second article talks about parameters that impact Wi-Fi throughput. You may be surprised to learn that it’s not all about the lower layers (Physical and Data Link), but the TCP communications have a significant impact as well. Read WiSE article 2
3) Wi-Fi Subtleties Explained (Channel Bonding)
Author: Bhaskaran Raman, Ph.D. Read WiSE article 3
In this third installment of the WiSE article series from AirTight Networks, channel bonding is considered. Some surprising results will cause you to rethink your network design plans and possibly how you will implement newer 802.11 technologies. Read WiSE article 3
4) Wi-Fi Subtleties Explained (Quality of Service [QoS] Controls)
Author: Hemant Chaskar, Ph.D. Read WiSE article 4
Quality of Service (QoS) is another aspect of the network performance that is relevant for applications such as VoIP over Wi-Fi. In this context, QoS is provided by prioritizing the packets belonging to specific applications such as VoIP over others so that they encounter minimal latency in transit. It takes three different sections of the data path to use three different techniques for the end-to-end handling of wireless QoS-sensitive packets, as discussed below. The idea of this article is not to provide overview of standard Wi-Fi QoS mechanisms such as WMM, but to point out some subtleties in using them in the network. Read WiSE article 4
5) Interference from Non-WiFi Sources, Part 1
Author: Bhaskaran Raman, Ph.D. Read WiSE article 5 – part I
RF interference is an important concern in Wi-Fi networks. Such interference can come from two types of sources: Wi-Fi or non-Wi-Fi. In this and the follow up article, the focus is on subtleties pertaining to non-Wi-Fi interference sources. Read WiSE article 5 – part I
Check back often as new articles are published on a regular basis.
About the AirTight WiSE authors:
Bhaskaran Raman is a scientist at AirTight Networks, working on high performance Wi-Fi architecture. Bhaskar received his M.S. and Ph.D. in Computer Science from the University of California, Berkeley, in 1999 and 2002 respectively, and his B.Tech in CSE from IIT Madras, India in May 1997. He was a faculty in the CSE department at IIT Kanpur from 2003-07. Since July 2007, he has been a professor at the CSE department at IIT Bombay. His research interests and expertise are in wireless and mobile communication networks. Bhaskar was a recipient of the IBM Faculty Award in the year 2008. He has published research papers in various IEEE and ACM conferences and journals, and is on the editorial board of ACM Computer Communication Review.
Hemant Chaskar is VP for Technology and Innovation at AirTight Networks. In this role, he looks after AirTight’s technology R&D and also performs roles in product design, business development, and various customer facing activities. At AirTight, Hemant has been working on Wi-Fi networking and security for the past 8 years; and has held positions at Nokia Research and Lucent Technologies prior to that. He holds Ph.D. in Electrical Engineering from the University of Illinois at Urbana-Champaign.
Follow CWNP on Twitter
Contact Tom Carpenter – WiSE Article Series Editor
More information on CWNP certifications
Follow Airtight on Twitter