Tero - do you have any idea what you're talking about?
<European operators naturally went with W-CDMA to get the easiest upgrade from GSM-GPRS.>
Last I checked, there was no upgrade from GSM-GPRS to W-CDMA, only to EDGE. I don't mind being wrong, so please explain if you know how to upgrade the GSM air interface to a CDMA air interface without replacing the thing.
You do understand, don't you, that there's a lot more to a wireless network than just the air interface?
Now, someone can correct me if I'm wrong on this, as I'm just now getting into and reading the CDMA2000 standards. But, my understanding is that CDMA2000 is not backward compatible with IS-95B. Specifically, you can't use an IS-95B mobile with a 3xRTT base station. Don't you think this is going to cause IS-95/CDMA2000 service providers nearly as much grief as the GSM/GPRS to WCDMA discontinuity.
And worse than that, HDR is not compatible with any of the IS-95/CDMA2000 technologies. HDR employs TDMA rather than CDMA in the high speed forward link. A mobile that's expecting to receive a TDMA signal is going to have a hard time connecting to any of IS-95B, 1xRTT or 3xRTT base stations.
The evolution to 3G is difficult for everybody. |
