C Users Dave Pictures Disruptive Analysis Edge Diagram with Dave Burstein levels 230Carriers have to decide whether they want to offer ~15 ms latency or 25-45 ms latency. 25-45 ms is inexpensive because it requires very few servers, The number of servers and the cost is much higher for ~15 ms. (1 ms works in the lab but it will be years before it is widely deployed. I wish politicians would stop lying about that.)

Choosing where to put Edge Servers is one of the most crucial decisions to make in advanced networks. Very few are certain the demand is there and confident about spending heavily. In the diagram (larger below), I point to 4 Levels at different speeds and costs.  

C Users Dave Pictures Disruptive Analysis Edge Diagram with Dave Burstein levels 650Every network is different. To simplify things, I offer four logical points for telco servers.  

Level 1 - At towers and cells for 10-15 ms. No one except possibly the Chinese is discussing this for the next 5 years. Too expensive

Level 2 - 1-3 hops back, C-RAN or exchange, 15-20 ms. Most engineers think this is ideal, but the investments haven't been approved.

Level 3 - A little further back, at a city or regional hub. BT is suggesting 1000 servers would be right for the UK.

Level 4 - At a limited number of national aggregation points but still within the telco network. DT is beginning with 7-14 servers, KT with 6. Latency might be 25 ms.

My opinion is that almost every carrier should offer at least a Level 4 network, building a market without committing much capital/

Verizon says the latency on its 5G network is 30 ms; actual tests are a little better. Verizon and AT&T have demonstrated in the lab that Edge Servers fairly close - what I call a Level 2 cloud - can deliver 15 ms. 

Minister Miao Wei 18 months ago set a goal of 90% of China within 25 ms of a server. The telcos are almost certain to build what he wants. The technology is improving so rapidly they may do better than that. China Telecom may delay a large investment until after 2021, however.  Yang Xin believes there is still a problem with the business model.


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. daveb@dslprime.com

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