sharing by Kathy SimonMilo Medin, one of the most respected communications engineers, co-authored what should become the basis for all discussion of spectrum allocations. Most thoughtful engineers realized a few years ago that shared spectrum usually delivers far more capacity because more users will usually mean more radios. While today's phones are not "software-defined" or completely "frequency agile," many support dozens of bands and the networks can almost always find less congested bands.

The most important recommendation is

"DoD should recommend that the NTIA, FCC and Department of State should advocate the reallocation of the C-band satellite spectrum to IMT-2000 5G use at the World Radio Conference later this year (WRC-19), and take measures to adopt sharing in all 500 MHz of the band in the United States on an accelerated basis for fixed operations." 

Almost all independent engineers conclude sharing is now the way to go. Columbia Professor & former FCC Chief Technologist Henning Schulzrinne in 2017 projected  OFCOM and some EU experts have said the same thing to me. More sharing is implied in the important White House PCAST report.

In "The 5G Ecosystem: Risks & Opportunities for DoD Defense Innovation Board," coauthors Milo Medin and Gilman Louie state plainly "The United States must invest in sub-6 capabilities and take steps to share its spectrum." The Medin and Gilman report concentrates on 500 MHz of spectrum currently allocated to defence but also addresses the 3.2-4.2 band.

This is almost politically impossible because Verizon and AT&T people are already fighting hard, but it's the right thing to do. It would end the satellite monopoly, which they were given at no charge and do not need. The sat guys want US$10 billion or more to give up spectrum they aren't using. It's unusual to U.S. licenses not to renew but the terms in the agreements I've read do not make it impossible. 

CTIA, which speaks for Verizon and AT&T in D.C., according to a news report, argues that monopoly spectrum should continue because that's how it was done in the past. The technology has changed; I'll hold back further comment until I get the complete statement.from them.

Milo and Gilman are very skeptical of the utility of mmWave. That opinion is shared by Neville Ray of T-Mobile but opposed by others. Millimetre wave performance is the most crucial open question in 5G.


dave ask


Rethinking Jan 27: Coronavirus could invalidate all projections. I reported on AIDS for 2 years. This could be worse because it spreads in air. Let us hope and pray.

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.  


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 and say thank you when you find an error.

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