this post was submitted on 24 Oct 2023
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I thought they weren't turning off 2G. What's the benefit? Other than forcing it sooner? Most places that used 2G still get exceptional coverage from it.
Coverage is from frequency, not generation of signal encoding.
The benefit is you can reuse the frequency bands for something better, like 5G. That's what they did in my country, among others. So, now we get 5G on 3 different frequency ranges. High speed and long range.
I was under the impression that higher bandwidth wireless networks required higher frequency bands for that data. Like a specific frequency should have a theoretical maximum data transfer rate and the only way to get around that would be some kind of fancy compression algorithms.
Frequency isn't that relevant, it's frequency bandwidth. The bit rate is n/T with n being bits per symbol and T symbol duration which itself is 1/B with B being the frequency bandwidth. You want to increase the bit rate you can either increase the number of bits per symbol or increase the frequency bandwith. 5G allows bandwiths up to 400MHz per channel, there isn't enough space in the lower frequency ranges for such large bandwidths, so you go up.