hi, cfoent:
<I must assume these voice/data problems were why QCOM's brain trust came up with HDR, separating voice and data.>
That is not my understanding. 1x/mc, and presumably 3x/mc (as Bux correctly points out, part of the CDMA2000 group), work fine for both data and voice, 1x projected to log in at 153kbps while doubling voice capacity, on the same 1.25 channel (users of voice and users of data on the same carrier--obviously actual throughput will depend on network conditions at any given time).
I think the reason HDR's development was accelerated as a complement to 1x (and which is now, from what I understand, being incorporated as a matter of course on 1x boards/CSM) and announced in September 1999 was to get a further jump on the W-CDMA FUDsters and naysayers about whose 3G was more proficient, more profitable and more ready. Since 3X/MC (and its higher data throughput to qualify for ITU 3G minimum standards at 2Mbps) is a ways off, Q offered the optimized data-only HDR at equivalent 3G data throughput to capture market before "3G" was ready to come to market (albeit, now, 1X, as the first phase of Q's 3G, is now commonly referred to as such).
Bux, I think 1Xtreme may be MOT/NOK data only to follow on HDR, using 5MgHz, I think.
Steve |
