200 episodes

A weekly podcast about wireless network engineering. Wireless topics on education, wireless design, tips, interviews with other wireless engineers, tech news about wireless, and the products we configure. A podcast for any wireless professional or enthusiast.

Clear To Send: Wireless Network Engineering Rowell Dionicio and François Vergès

    • Tech News
    • 4.7, 50 Ratings

A weekly podcast about wireless network engineering. Wireless topics on education, wireless design, tips, interviews with other wireless engineers, tech news about wireless, and the products we configure. A podcast for any wireless professional or enthusiast.

    CTS 221: Industrial Wi-Fi with Scott McNeil

    CTS 221: Industrial Wi-Fi with Scott McNeil

    In this episode, we are talking about Wi-Fi in the Industrial environment with Scott McNeil. Scott has great experience designing, deploying and troubleshooting Wi-Fi and these environments and share his experiences with us! We are also talking about how the Industrial 4.0 revolution will impact how we will be using Wi-Fi in an industrial environment. Enjoy!

    You can go follow Scott on Twitter: https://twitter.com/americanmcneil


    * Industrial Wi-Fi vs. Enterprise Wi-Fi* Wireless becoming critical (Industrial 4.0)* What is similar* The need for wireless connectivity* Standards based wireless protocols (Wi-Fi, Bluetooth, Zigbee, Cellular)* Physics of wireless* What is different* Environmental aspect (temperatures, humidity, dust…)* Equipment (IP66, IP67)* Rules of engagements* Interferences* Important metrics* Retry rate* Packet loss* Latency* Roaming delay* Wi-Fi 6 test in an industrial environment conducted by the WBA* Site Surveys in an industrial environment* When to perform them* What type of site surveys to perform* Finding unknown devices* Innocent items like printers and cellular hotspots* Intentional devices installed by vendors* Identifying other sources of inferences* Spectrum Analysis* You never know what you might find in these environment* Industrial microwave dryer* Infrared adhesive curing equipment* Strong electromagnetic energy generated by machines

    Example of interference measured by Scott in the field:

    Example of interference: infrared curing machine

    Example of interference: microwave dryer

    Links & Resources

    * Scott’s Blog on Industrial Wi-Fi: https://industrialwifishop.wordpress.com/* Scott’s article on spectrum analysis: https://industrialwifishop.wordpress.com/2020/01/07/industrial-airspace-101/* Scott’s article on Industrial 4.0: https://industrialwifishop.wordpress.com/2020/05/20/wireless-industry-4-0-now-with-the-minty-flavor-of-wifi-6/* WBA Industrial 4.0 Wi-Fi 6 Test: https://metrology.news/wifi-6-successfully-completes-first-phase-industry-4-0-trials/

    • 48 min
    CTS 220: WLAN Pi & Python Scripting

    CTS 220: WLAN Pi & Python Scripting

    What tools come to mind when you’re doing remote troubleshooting? Have you ever used a WLAN Pi? In this episode, François and I did a live stream on the CTS YouTube channel, highlighting the capabilities of the WLAN Pi.

    Some tools are just out of reach in terms of cost. The WLAN Pi is affordable and packs a lot of tools.

    The reason for the live stream was to show how I was able to use the WLAN Pi, which was hosted at François’ house, to get a remote view of the Wi-Fi networks around him.

    Even better, I was able to load the information in WiFi Explorer as a remote sensor, giving us that visual look of the environment.

    Near the end of our live stream, François shares his Python scripts used with Mist to configure an access point for APoS operations. It’s worth checking out the live stream if you want to see it in action.

    • 54 min
    CTS 219: Wireless Broadband Alliance with Tiago Rodrigues and Gabriel Desjardins

    CTS 219: Wireless Broadband Alliance with Tiago Rodrigues and Gabriel Desjardins

    In this episode we wanted to introduce the Wireless Broadband Alliance to you guys. In order to do so, we invited 2 special guests:

    Tiago Rodrigues

    CEO at Wireless Broadband Alliance

    Gabriel Desjardins

    Director of Product Marketing, Broadcom Wireless Connectivity division and Board Member at WBA


    In this episodes, we are talking about the following topics:

    * Presentation of the WBA* What is the WBA?* Non profit – Membership driven organization (how do you attract the members?)* Improving the experience over a Wi-Fi connection* What you do* Develop project to solve a specific problem* Best practices* Deployment guidelines* Field trial* What are your objectives* Members decides what they would work on* Speedup the test* What are the outcomes* How can it be useful for WLAN Engineers* Documents published by the WBA* How do you create them?* Who writes them?* What is your target audience?* Wi-Fi 6 & Wi-Fi 6e* Talk about the Wi-Fi 6 group* Talk about the Wi-Fi 6 documents published* Talk about Wi-Fi 6e* Trial cases* How will it work in the field* OpenRoaming* WBA taking it over* The future of OpenRoaming

    Wi-Fi 6 Deployment Guidelines and Scenarios


    Links & Resources

    * Link to the WBA website: https://wballiance.com/* Wi-Fi 6 Trials: https://wballiance.com/wi-fi-6-trials/* Wi-Fi 6 working group: https://wballiance.com/wi-fi-6-802-11ax/* Wi-Fi 6 Deployment Guidelines: https://wballiance.com/wi-fi-6-deployment-guidelines-scenarios/* 802.11ax Decoded: https://wballiance.com/enhanced-wi-fi-6-802-11ax-decoded/* Wi-Fi 6e: ttps://wballiance.com/resource/understanding-the-global-implications-of-wi-fi-6-6ghz/* Wi-Fi Deployment Guidelines: https://wballiance.com/wifi-deployment-guidelines/ & https://wballiance.com/wp-content/uploads/2018/03/Wi-Fi-Deployment-Guidelines-Compliance-Checklist-Public-v1.0.pdf* 802.11ax Decoded -Infographic: https://wballiance.com/wp-content/uploads/2018/09/Infographic-Wide-Version.pdf* WBA Resource Centre: https://wballiance.com/resource/* Wi-Fi in the 5G era: https://wballiance.com/wp-content/uploads/2019/10/Desjardins_WBA_Oct_2019_Wi-Fi-in-the-5G-Era.pdf

    • 53 min
    CTS 218: 6GHz PSD & AFC with Chuck Lukaszewski

    CTS 218: 6GHz PSD & AFC with Chuck Lukaszewski

    In this episode, we have Chuck Lukaszewski, VP of Wireless Strategy & Standards for HPE, to talk about two technical aspects of 6GHz:

    * Power Spectral Density (PSD)* Automated Frequency Coordination (AFC)

    On top of explaining these technical concepts, Chuck gives tones of useful information on 6GHz regulations for both the US and Europe.

    Podcast Content

    6GHz Status

    * Quick recap of the status* Draft and Order outcome

    Power Spectral Density (PSD

    * Power Spectral Density* What is PSD: It tells us how the power is distributed in frequency (dbm/MHz)* Why did we decided to change the way we regulate transmission power in 6Ghz (EIRP vs PSD)* Be able to use wider channel without lowering the SNR* How does it work in practise – The math behind it* Europe will not use PSD (23 or 24dBm EIRP for LPI)* SNR issue for larger channels* Also less channels* Allow the portable devices at 14dBm EIRP from the very beginning

    Automated Frequency Coordination

    * Automated Frequency Coordination* What is AFC: * Use of a spectrum database (ULS)* Incumbent locations (big dishes)* Figure the pattern of that transmitter* Where it is in space* Frequencies available at this locations* AFC Operators will manage the spectrum database* Why do we need it for some communications on 6GHz* Used for outdoor communications or indoor high power communications* Explain how it is different from DFS* AFC is a preemptive protocol* Every 24h it has to check* How does it work?* AFC returns the list of available frequencies and the max power to use* APs will have GPS inside to report location* AP manager needs to know where the APs are* Campus AP* You are already connected to internet* Securely via secured protocols* Point-to-Point* Initial operations in 5GHz to contact the database* AFC equipment will not be available at day 1* The process is not defined yet for the incumbents* Some more testings have to be done* AFC is only enable in 2 UNII bands* UNII-5 & UNII-7* No outdoor operations on 6GHz in Europe* Most European countries do not publish their licence use.* No data base in European so no AFC possible in Europe* Maybe: Light licensing type of model will be used* AFC to comply with international rules for Canada and Mexico* Probably follow the FCC after April 23rd

    Links & Resources

    * FCC Document: 6GHz Report and Order and Further Notice of Proposed Rulemaking* All FCC documents related to 6GHz: https://www.fcc.gov/ecfs/search/filings?proceedings_name=18-295&sort=date_disseminated,DESC* Chuck’s Aruba Blog Articles on 6GHz:* https://blogs.arubanetworks.com/spectrum/fccs-6-ghz-move-will-push-usa-ahead-of-the-world-in-wireless/* https://blogs.arubanetworks.com/spectrum/the-6-ghz-band-say-goodbye-to-the-stone-age-of-wi-fi/* HPE 6GHz Roundtable with Chuck Lukaszewski and other influencers: https://www.dropbox.com/s/45w0gklv58ic7vi/6GHzRoundtable1_edited_14202004.mp4?dl=0* WirelessLAN Pros Podcast Episode 194: Who’s Ready for 6GHz?

    CTS 217: Bringing 6GHz to Fruition with Chris Szymanski

    CTS 217: Bringing 6GHz to Fruition with Chris Szymanski

    Chris Szymanski, director of product marketing and government affairs for Broadcom, joins us on the show to talk about the process of getting the 6GHz band available for unlicensed use. Chris has been involved in the process for more than 4 years and shares some of his insights on the whole process.

    Episode Agenda

    * FCC Process to enable the 6GHz frequency band for unlicensed use in the USA* FCC is still in the process of enabling the 6GHz band.* An important vote will take place on April 23rd to enable Low Power Indoor (LPI) use over 1200MHz of new spectrum.* The process is complexed as a lot of different parties are involved.* FCC released a draft order Report and Order document on April 2nd 2020.* Status in other parts of the world* Europe: Chris explains how the process works in Europe.* Wi-Fi 6e* 802.11ax on the 6GHz frequency band* Certification from the Wi-Fi Alliance* 6GHz compatible devices* Broadcom has 8 AP related products 6GHz capable* Broadcom has an Euro class smartphone device 6GHz capable* New use cases* Additional spectrum will allow us to use wide channels and higher data rates allowing new type of applications* AR/VR* Critical low latency applications

    Links & Resources

    * FCC Document: 6GHz Report and Order and Further Notice of Proposed Rulemaking* All FCC documents related to 6GHz: https://www.fcc.gov/ecfs/search/filings?proceedings_name=18-295&sort=date_disseminated,DESC* Broadcom Wi-Fi 6E website* Latest blog on the 6 GHz decision* European Conference of Postal and Telecommunications Administrations (CEPT) Website: https://cept.org/

    • 58 min
    CTS 216: TWIW – Cisco Exams Online, New Channel Chart, No-Twitter Chuck on Twitter

    CTS 216: TWIW – Cisco Exams Online, New Channel Chart, No-Twitter Chuck on Twitter

    It’s another week in quarantine but that’s not stopping the wireless news. In this episode, we recorded a video for the YouTube channel to provide another form of medium if video is your thing.

    Cisco taking some of their exams online

    In a new turn of events, Cisco has made nearly all their certification exams online. With the quarantine and work-from-home in effect, the certification studying can continue. Susie Wee announces the news in a blog with a link to a Cisco page containing all the details.

    New Channel Chart by Keith Parsons

    6 GHz is nearly here. The vote is set to happen in a few days. Keith R. Parsons created a graphic which displays the possible channels Wi-Fi can use. Just look at that large 1200 MHz worth of frequency and the number of channels available.

    I thought it appropriate to see a visual image of how much more spectrum 6GHz will bring to Wi-Fi.2.4 GHz3 – 20MHz Channels5 GHz25 – 20 MHz Channels6GHz59 – 20 MHz ChannelsThe new ‘norm’ for Enterprise deployments will be 80 MHz channels!One more week till FCC vote! pic.twitter.com/2cIS2f1p4n— Keith R. Parsons (@KeithRParsons) April 15, 2020

    New iPhone SE

    Apple quietly releases a new iPhone with Wi-Fi 6 and CBRS capabilities. We will continue to see the adoption of these new technologies rise as people upgrade their mobile devices every year. And this is at a good price point of $399.

    Got more information on the AirMagnet come back:

    Have you heard? There’s something new coming to AirMagnet. We sure hope it includes Link-Live functionality and the use of their handheld tools with the survey software. They are hosting a webinar this week.

    Did we mention 6GHz?

    There’s plenty of documents on the FCC website if you dare to take a look.

    Tx power in Ekahau

    Cisco added back the Aironet IE information when analyzing Wi-Fi networks. You can see it visibly in Ekahau, as Sam Clements points out.

    Have you seen the radio TX power in @ekahau? @Cisco_Mobility brought this back to new APs in 8.10MR2 and 17.2 – let's thank them for this fantastic insight! pic.twitter.com/7GsrlnhHQ2— Sam Clements (@samuel_clements) April 17, 2020

    Complexities of Wi-Fi in Higher Education

    Rowell Dionicio participated in an Ekahau webinar to discuss the complexities of Wi-Fi in Higher Education. It was an insightful and fun discussion with an engaging audience.

    • 31 min

Customer Reviews

4.7 out of 5
50 Ratings

50 Ratings

JR-John ,


Very technical and informational, helped me a lot! ^_^👍👍

bryan_dearth ,

The Best by Far!

I’ve been listening to this podcast since September 2018, and I have to say it’s the most enjoyable technical podcast I’ve listened to by far. It’s so good in fact, I’ve gone back and listened to almost all of the old episodes as well. From interviews and current news, 802.11 basics to WiFi 6 deep dives, this one covers all the bases. If you are looking for a way to fill you commute and have a passion for Wireless Engineering, do yourself a favor and give this one a try.

Rowell and Francois, please keep the episodes coming!

ortiz3m ,

Great Podcast for those commuting and wanting to become better Engineers

I've been listening to CTS for the last few months and its so refreshing. Sometimes as engineers we can get into a stride and comfortable. This podcast helped me get out and refocused about learning the ins and outs of 80211. Its so important for wireless engineers to be knowledgeable about our environment and Rowell/Francois help with focused episodes. Whether its the new stuff with ofdma, learning what it takes to be CWNE, or fundamentals of proper RF design, you will learn/refresh alot of information that will make you a better 802.11 engineer!

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