huntml
join:2002-01-23
Mullica Hill, NJ
 ·Comcast
| reply to Ignite
Re: EV-DO?
As has been pointed out HSDPA *is* a CDMA technology, just not one that is part of the CDMAOne/CDMA2000 evolutionary path.
That said, though, from what I've read, I get the idea that most of the chipsets that have been manufactured in the last several years, and will be manufactured going forward, are or will be physically able to support most popular air interface standards. What standards they are actually able to access are determined by how the software controlling the radio functions is implemented on the handset.
This being the case, the technical impediments to cross-interface roaming are not insurmountable, and Sprint and ATTM (just as an example) could roam on each others' networks in the U.S. even right now, if they wanted to spend a relatively small additional amount to add such capabilities to the software in their handsets.
According to this view, the fact that such agreements don't exist is at least as attributable to business decisions as it is to technical limitations, and all the wrangling about evolutionary paths, etc., isn't anywhere near as significant, really, as it's played up to be.
(This seems to make sense to me, especially given the fact that CDMA/GSM handsets have existed for sometime, e.g., Sprint's Samsung IP-830w smartphone, which will roam on GSM 1900 internationally, but not on T-Mo or ATTM.)
Can someone with the requisite technical knowledge weigh in on this? |
