Latency U 2305G latency in the US in 2019 should normally be 30-40 ms, down from 43-57 ms on LTE. The chart at left or follow the link. That's a 20% to 35% improvement, welcome but not game-changing. The "1 ms" latency is a fantasy.

Improving the backhaul/transit system and/or installing an Edge Cloud within the carrier network can bring that down to 15-25 ms in many places. 

1 ms is possible in the lab with test equipment, but the actual gear going into the field is about 10 ms from phone to tower (Verizon and AT&T data.) 

To that, you have to add the time from the tower to the server, which is the majority of the current latency.

The backhaul/transit delay is greater than the "air latency." The implication is that improvements behind the tower can contribute the most to reduced latency. Telefonica, Deutsche Telekom, and Verizon are proving that in the field. 

Enrique Blanco at Telefonica has reduced the number of hops to about four from one end of the network to the other. Deutsche Telekom is actively building an Edge Cloud and seeing 20-25 ms.

Verizon is the most aggressive. Its 5G build is one of the most extensive in the Western world. Less known is that Lee Hicks' One Fiber plan is ripping out 200,000 pieces of equipment and replacing them with about 20,000. The new gear is much faster and the number of hops fewer. Verizon hasn't released any latency figures but I'm sure it's down substantially.

Hicks has said the rebuild pays for itself in two or three years. "We are saving 50% the first year." Overall, including Massive MIMO, carrier aggregation, and 5G, Verizon's costs are falling at 40% per year. 

NR is not a near-miraculous way to reduce latency and investing in other parts of the network probably has a larger payoff.

dave ask

Newsfeed

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

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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.