| >5G really changes nothing of this. Shannon's law dictates this and we are close to topping out on it in terms of radio efficiency. 10 to 15 years ago that is what I thought. Until Massive MIMO. Some of the crazy stuff we are doing now in Wireless tech was literally dimmed theoretically impossible when I did some very early work on 3G in University. It doesn't break Shannon's law, we just find many ways around it. Many doubt Massive MIMO will ever work, including industry expert. I doubt it too, if anyone remember something similar called pCell many years ago. It turns out it did work. It was originally created and based on TDD, we could do 128 x 128, or even 1024 x 1024 antenna. Sprint are doing 64 x 64 / 128 x 128 works on their Network already. [1] But there is a cost, power etc involved but the tech works. We thought this crazy thing would not work on FDD, which is what majority of the world uses, it turns out they have found ways around it too. Both Ericsson and Huawei's solution is much better then some originally thoughts. Not as elegant or as effective as TDD but it still works. We have small cells, this time it actually works as advertised. Combined with LAA in 5Ghz Spectrum. 5G provides an order of magnitude increase in capacity. It also makes some backend services cheaper to run, there are already a few countries started price war in bid to attract more customer on their network as they have more capacity resources. I still remember a few years ago, when my friend were installing her first fibre installation at her home. It was such as hassle with cable layering, ONT modem etc. She was very frustrated and asked a simple question that stuck me at the time. Why cant we all use mobile. Mobile is enough for me, why cant my home PC uses 4G too? Will there be someday where they sent me a "Modem" with SIM card in mail I plug it in and it will work? I thought she was crazy. That is not possible, what makes her think that? You told me 5 years ago ( That is 8 - 9 years from today ) Smartphone wasn't a thing, now everyone has it and we are watching video on it already. Surely 10 years from now that should be possible right? I said no, it is not possible. I had Shannon's law in my mind. I had me BiTorrent downloading Terabytes of data in my mind. Cell tower contention in my mind. Now I am not so sure. [1] https://www.youtube.com/watch?v=7onQZ51b0yc |