WN Podcast 045 – WiFi 6e and Future of WiFi with Gabe Desjardins from Broadcom

Welcome to the latest WiFi Ninjas Podcast!

Today we have a pleasure discussing WiFi 6e and future of WiFi with Gabe Desjardins, Director of Product Marketing, Wireless Connectivity Division at Broadcom.

Here is what we have discussed:

  • 6GHz Spectrum & Channels 
    • US = 1200MHz of additional spectrum
      • 59 x 20MHz channels
      • 29 x 40MHz channels
      • 14 x 80MHz channels
      • 7 x 160MHz channels
    • EU = 500Mhz of additional spectrum
      • 24 x 20MHz channels
      • 12 x 40MHz channels
      • 6 x 80MHz channels
      • 3 x 160MHz channels
    • Issues with the SNR and 160?
    • Why are the EU getting less than half the US? 
    • Broadcom have been advocating 160MHz channels. Is this really a viable option? 
    • More channels = more time to scan the channels = could lead to problems for devices to roam, how will this work? Will we scan 100 channels? 
    • Channel numbering scheme? Starting at 1 again in 6GHz (8-bit field 59 x channels barely fits the 8-bit field)
  • What else operate in the 6GHz frequency band? 
    • Any DFS? 
    • TV & Radio?
    • Emergency Services / Public safety? (UNII6 & UNII8) 
  • Indoor and outdoor power constraints? 
    • Low power indoor (27dBm in 160MHz channels, 24dBm in 80Mhz channel) permitted across whole 6GHz band. 
    • Constant EIRP of 30dBm – so even if we double the channel width we keep the same SNR.
    • 5dBm per MHz?
      • No longer lose SNR when we bond channels together
      • Power is independent of the bandwidth (PSD) – ensures the same net EIRP
    • Fixed indoor AP
    • Outdoor mobile AP (Phones & Cars etc) 
    • Very low power (14dBm EIRP) (AR & VR) (In car AP, game controllers)  
  • 6GHz Chipsets & Radios 
    • APs – Multi-bands
      • Tri radio APs? 2.4 + 5 + 6?
      • Quad radio APs? 
    • Will we have antennas that sit natively at the bottom end of 6GHz and can also access the upper channels in 5?
    • When are we likely to see APs & clients with 6GHz chipsets in them?
    • Broadcom launches world’s first WiFi 6E 6GHz chips (Jan 2020)
      • Intended for enterprise APs and residential networks
      • 4×4 dual band 160MHz support
      • 2×2 tri-band
      • 2×2 dual-band with ARM CPU
    • 15 billion WiFi devices that are currently on the market that are not 6GHz capable 
    • Timeline for 6GHz client penetration prediction? 
  • Access/ Edge Switches
    • Currently 1Gbps & 30Watt PoE on average
    • With all this additional spectrum and radio chains their will be new PoE & bandwidth requirements for access switches. What do you think these are realistically likely to be? 
  • WiFi 7
    • 320MHz wide channels? (would be only 3 x non overlapping)
    • What speed would that potentially give us?
    • Even more consideration for PoE budget & bandwidth for access switches.
    • Do you think it’s a good idea to add 802.11ax into 6GHz or have IEEE missed an opportunity to redefine the 802.11 protocol within a brand new spectrum that doesn’t have any backward compatibility to deal with?

Thanks a and tons of love!

WiFi Ninjas xx

One comment on “WN Podcast 045 – WiFi 6e and Future of WiFi with Gabe Desjardins from Broadcom

  1. Like!! Thank you for publishing this awesome article.

Comments are closed.

Stay up to date with the WiFi Ninjas
Never miss a blog or podcast again!