> There’s always a gradual refarming of the spectrum into the next G.
Not necessarily for 4G to 5G. 5G can run a 4G compatible control channel and timeslices can be 4G or 5G.
> Usually the most penetrating frequencies (ie lowest) are kept on the lower G to maximize legacy support.
Maybe, but at least in the US, 4G wad deployable on new lower frequency spectrum that had previously been used for TV. LTE 71, 600 Mhz is lower frequency but wouldn't have been usable for 3G because legacy phones didn't use those frequencies.
> Not necessarily for 4G to 5G. 5G can run a 4G compatible control channel and timeslices can be 4G or 5G.
And for those playing at home, WiFi 7 devices aren't held back by coexisting with WiFi 6 devices, for the same reason (the use of OFDMA), at least on the 6 GHz band. Legacy clients of course muddy the waters on the other bands when they're in use.
Not necessarily for 4G to 5G. 5G can run a 4G compatible control channel and timeslices can be 4G or 5G.
> Usually the most penetrating frequencies (ie lowest) are kept on the lower G to maximize legacy support.
Maybe, but at least in the US, 4G wad deployable on new lower frequency spectrum that had previously been used for TV. LTE 71, 600 Mhz is lower frequency but wouldn't have been usable for 3G because legacy phones didn't use those frequencies.