daveburstein

8 лет назадdiscuss

Author here. Wish it were good for rural but 98% of experts think 5G millimeter wave will mostly be urban and suburban. Millimeter wave has short reach, hence not good for rural. More antennas, MIMO and Massive MIMO, is the way to go for rural. Some people call that 5G, some don't.

daveburstein

8 лет назадdiscuss

Author here. Density is one way to add capacity but adding more spectrum or more antennas turns out to be cheaper most place today. (Carrier aggregation and MIMO.) Millimeter wave is essentially adding more spectrum.

daveburstein

8 лет назадdiscuss

Author here. There's no conspiracy, just an incredible amount of 5G hype. Note that the source of the comment is the CEO of the largest manufacturer, and I have similar from CTOs of Deutsche Telekom and Telefonica.

daveburstein

8 лет назадdiscuss

Author here. Actually, the LTE being installed today will give 100-300 megabits to most users, except at the edge of the cell or behind a building, etc. The "usually less than 100 megabits" is equipment from more than a year ago. The right comparison is 2019 equipment against 2019 equipment.

daveburstein

8 лет назадdiscuss

Author Here to clarify The article is comparing today's LTE and 5G, deploying in 2018-2019. Is there really a big difference to the consumer between 100-400 meg real speeds (LTE) and 5G at 200 -600 meg mostly? In what application? Latency in today's equipment from Ericsson and Huawei for either is 5-15 milliseconds.

Only 10-20% of the "5G" will be the 1 gig millimeter wave until after 2020. Even then, what's the practical difference for most people between 150 megabits and 900 megabits?

Some details: Most LTE going in today is 100-400 meg real with a decent connection, 600-900 meg peak. (3 or 4 CA, 4x4 MIMO.) 2) 80-90% of the "5G" in the world through 2020 will be midband 3.5 GHz 200-600 meg. Only a small fraction will be the true 1 gig millimeter wave. 3) Latency on either most likely 5-15 milliseconds. (The difference in Ericsson equipment is 1-2 ms.)

email me, [email protected] for references to primary sources. Don't believe the hype. 5G millimeter wave is planned for 1-4 ms URLLC, but not until 2022-2025. It can go 10-20 gigabits in the lab today, but I don't know any carrier designing for more than 1 gig to a user in the next 5 years.

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