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

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The 3.3-4.2 spectrum should be shared, not exclusively used by one company, concludes an important U.S. Defense Innovation Board report. If more wireless broadband is important, sharing is of course right because shared networks can yield far more

It does work! Verizon's mmWave tests over a gigabit in the real world. 
The $669 OnePlus 7 Pro outclasses the best Apples and probably the new Galaxy 10 or Huawei P30 Pro. Optical zoom, three cameras, liquid cooling, Qualcomm 855 and more.
Korea at 400,000 5G May 15. Chinese "pre-commercial" signing customers, 60,000-120,000 base stations in 2019, million+ remarkable soon. 
5G phones Huawei Mate 20, Samsung Galaxy 10, ZTE Nubia, LG V50, and OPPO are all on sale at China Unicom. All cost US$1,000 to 1,500 before subsidy. Xiaomi promises US$600.
Natural monopoly? Vodafone & Telecom Italia to share 5G, invite all other companies to join.
Huawei predicts 5G phones for US$200 in 2021, $300 even earlier
NY Times says "5G is dangerous" is a Russian plot. Really.
Althiostar raised US$114 million for a virtual RAN system in the cloud. Rakuten, Japan's new #4, is using it and invested.
Ireland is proposing a US$3 billion subsidy for rural fibre that will be much too expensive. Politics.
Telefonica Brazil has 9M FTTH homes passed and will add 6M more within two years. Adjusted for population, that's more than the U.S. The CEO publicly urged other carriers to raise prices together.
CableLabs and Cisco have developed Low Latency XHaul (LLX) with 5-15 ms latency for 5G backhaul,  U.S. cable is soon to come in very strong in wireless. Details 
Korea Telecom won 100,000 5G customers in the first month. SK & LG added 150,000 more. KT has 37,500 cells. planning 90% of the country by yearend. 
The Chinese giants expect 60,000 to 90,000 5G cells by the end of 2019.
China Telecom's Yang Xin warns, "Real large-scale deployment of operators' edge computing may be after 2021." Customers are hard to find.
Reliance Jio registered 97.5% 4G availability across India in Open Signal testing. Best in world.

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Welcome On Oct 1, 2019 Verizon turned on the first $20B 5G mmWave network with extraordinary hopes. The actual early results have been dismal. Good engineers tell me that will change. 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.