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


Vivo is selling new the iQOO 5G premium quality phone for US$536.

Lei Jun Xiaomi "5G to have explosive growth starting from Q2 2020"5G to have explosive growth starting from Q2 2020" I say sooner

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.

Bharti in India has lost 45M customers who did not want to pay the minimum USS2/month. It's shutting down 3G to free some spectrum for 4G. It is cutting capex, dangerous when the 12 gigabytes/month of use continues to rise.

Huawei in 16 days sold 1,000,000 5G Mate 20s.  

China has over 50,000 upgraded base stations and may have more than 200,000 by yearend 2019. The growth is astonishing and about to accelerate. China will have more 5G than North America and Europe combined for several years.

5G phone prices are down to $580 in China from Oppo. Headed under $300 in 2020 and driving demand.

No one believed me when I wrote in May, 90% of Huawei U.S. purchases can be rapidly replaced and that Huawei would survive and thrive. Financial results are in, with 23% growth and increased phone sales. It is spending $17B on research in 2019, up > 10%. 

5G phones spotted from Sharp and Sony

NTT DOCOMO will begin "pre-commercial service Sept 20 with over 100 live bases. Officially, the commercial start is 2020.

 More newsfeed


Welcome  1,800,000 Koreans bought 5G in the first four months. The demand is there, and most of the technology works. Meanwhile, the hype is unreal. Time for reporting closer to the truth.

The estimates you hear about 5G costs are wildly exaggerated. Verizon is building the most advanced wireless network while reducing capex. Deutsche Telekom and Orange/France Telecom also confirm they won't raise capex.

Massive MIMO in either 4G or "5G" can increase capacity 3X to 7X, including putting 2.3 GHz to 4.2 GHz to use. Carrier Aggregation, 256 QAM, and other tools double and triple that. Verizon sees cost/bit dropping 40% per year.

Cisco & others see traffic growth slowing to 30%/year or less.  I infer overcapacity almost everywhere.  

Believe it or not, 80+% of 5G (mid-band) for several years will be slower than good 4G, which is more developed.