Need to know Edge: No one is buying so no one is building (except China, Amazon, Google, Microsoft & data centers)

In 2019, I thought Edge would be in the telcos

Verizon, DT, Telefonica and other telcos were excited about building Edge servers for low latency. But none of them are installing many outside of China. (So far). Verizon has postponed indefinitely its planned rollout of a thousand Edge servers. Despite brave talk, its “Edge” is mostly press releases and not low latency.

But once the automakers gave up on controlling cars from outside servers, they couldn’t find customers willing to pay. Connected cars are ubiquitous and now come with 5G. But you don’t need low latency if the auto does the driving.

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5G Flavors: mmWave is good, low & mid-band closer to 4G

Wireless has been getting better at a ferocious rate since at least 2013. Verizon calculates its cost per bit has been going down 40%-50 every year and expects that to continue. This has been true and is a good thing. “5G” has become a meaningless marketing term; most of the big advances happened in the 4G standard. (Massive MIMO, Carrier aggregation) Wireless keeps getting better, whatever the name or the “G.” 

Millimeter wave does get to ~ 3 times the speed because there’s a lot of empty spectrum up there. It has more capacity, so the carrier can offer much more bandwidth.

No 5G has very low latency today, contrary to many claims. Latency in 4G is 25-60 ms, mostly 40-55 ms in the U.S. The average 4G latency in Singapore is 29 ms. 5G today has little effect on latency.

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