MIMO antennas extend the easily usable frequencies well beyond the 4.9 GHz band. The FCC took the first step with a Notice of Proposed Rulemaking. Claus Hetting of Wi-Fi Now kindly allowed me to reprint his report.

The FCC wants to introduce four new unlicensed subbands aptly named U-NII-5 to U-NII-8. In the case of U-NII-5 and U-NII-7 (a total of 800 MHz) a new scheme called AFC (‘Automated Frequency Control’) will protect some incumbent 6 GHz users (mostly point-to-point microwave links) from harmful interference, the FCC says. In these two subbands the FCC wants to allow the operation of ‘standard-power access points’ equivalent to current rules for U-NII-1 and U-NII-3 subbands.

Four new subbands and (some) new rules 

Meanwhile the U-NII-6 and U-NII-8 subbands (a total of 350 MHz) should only be used indoors, says the FCC. The use of these two bands will also only be permitted at low power levels equivalent to those of the current U-NII-2 band. The idea is that such restrictions will be sufficient to protect fixed microwave links, mobile stations, and some satellite incumbent users in these bands.

The exact subband structure would then look like this:

  • U-NII-5: 5925-6425 MHz (standard power levels, AFC applies)
  • U-NII-6: 6425-6525 MHz (low power, indoor only)
  • U-NII-7: 6525-6875 MHz (standard power levels, AFC applies)
  • U-NII-8: 6875-7125 MHz (low power, indoor only)

“The Commission tentatively concludes that this two-class approach can expand unlicensed use without causing harmful interference to the incumbent services that will continue to be authorised to use this spectrum,” the FCC says in the document. The U-NII-5 band is also currently under study by the European Commission as a candidate for expansion of Wi-Fi bands in Europe."

Thanks to Wi-Fi Now and Claus Hetting to letting me reprint his write-up.

dave ask

@davescomm

Details on all 5G phones, as prices drop to $285 ** All actual 5G networks worldwide ** Facebook ordered to repost Italian fascist page. ** Apple China sales down 35%** Qorvo sees 300M 5G 2020 & 750M 2023 mmWave <10%

** Bharti demands India Gov more than double prices and enforce cartel. Sunil Mittal "Situation is dire. It is a matter of survival for everyone." ** Wi-Fi 6 meets ITU 5G criteria @stephenjcrowley ** Samsung $8B for Chinese memory plants ** Morgan paying billions for Altice fiber

Dec 10 Sprint bringing $300-500 5G phones to US 2020. Nokia, Lenovo, HMD ** H., Apple, and AMD doing 5 nm test runs on TSMC's 5 nm. Early results are 15-30% better than 7 nm ** AT&T low-band 5G built to >65% US. Speeds slower than 4G at launch. ** 

Verizon CEO Ronan Dunne: >1/2 VZ 5G "will approximate to a good 4G service" Midband in "low hundreds" Mbps ** CFO John Stephens says AT&T is going to cut capex soon. ** Huawei in 16 days sold 1,000,000 5G Mate 20s.  

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Welcome  Asia is installing hundreds of thousands of 5G radios and adding 5G subs by the tens of millions. The west is far behind. 200,000,000 in 2020

The demand is there, and most of the technology works. Meanwhile, the hype is unreal. Time for reporting closer to the truth.

I'm Dave Burstein, Editor. I've been reporting telecom since 1999. I love to hear from readers, especially when you find an error. daveb@dslprime.com

Also see

analysisbranch.com,

fastnet.news

huaweireport.com