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Millions of smart meters will fail when 2G and 3G turns off
(www.theregister.com)
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this post was submitted on 24 Oct 2023
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It's going to vary, even within counties. A lot of US utility companies are having the same issue, and there are companies that make and sell 3G to 4G adapters for larger coverage areas. For example, microcell that rebroadcasts/converts the 3G signals into a 4G signal for the local towers. Other areas are swapping out 3G for 4G or Lorawan style meters.
And I'm sure even more are just going to arbitrarily create billable usage figures because they outsourced their IT to India, and then outsourced the India team to Pakistan or the Philippines, and then fired them because the CEO's son is really good with computers. Unfortunately, he's just now reading my comment and going "oh...fuck".
How would those microcells be legal? It's not just that 3G or whatever gets shut down, the frequencies are usually reallocated to something else so you can't legally operate a 3G network on those frequencies anymore.
It would depend how regulations are written. It's perfectly conceivable that these can be allowed to operate using a very low power level that wouldn't interfere with the larger network, especially if the use case is for things like substations that are already isolated.