Re:Inside Apple’s Spectacular Failure to Build a Key Part fo...
by 8fingerlouie on Thursday September 28, 2023 @04:11AM
(#37686745)
> Perhaps you are confusing that each GSM transceiver (TRX) provides 8 time-division channels with call capacity
I was talking 2G/3G. It has been 20 years since i wrote software for mobile phones :) But i should probably have been more specific and said you can have 8 active calls per channel. And i have no doubt today with 4G/5G and a shift to VoIP that you can have way more than that.
> Femtocells are still a thing today. Not so much to do with frequency capacity.
I was attempting to refer to the scalability/complexity of the network, which scales from 10s of kilometers to 10s of meters, or even more/less.
But as i said, i wrote software for the phones. My understanding of the network side of things was/is limited to the rudimentary knowledge needed to write that, and i'm happy to be corrected.
No. Perhaps you are confusing that each GSM transceiver (TRX) provides 8 time-division channels with call capacity, but most cells and BTS in GSM parlance, especially any in a well populated area have/had way more than one transceiver.
Furthermore those 8 TDMA slots could be split in 1/2 or 1/4 with lower rate codecs, so it was more than 8 per TRX as well.
> Some large conferences have had base stations with their range measured in single digit meters (<30 ft)
Femtocells are still a thing today. Not so much to do with frequency capacity.