Can Sprint 3g do 9MBps on the new 3g network?
To add a bit more to that, there was a rumor a few months ago that sprint would be upgrading its cell sites to evdo rev b, which you can think of as multi carrier rev a (that is, multiple 1.25 MHz channels bonded) among other enhancements. As far as I know, sprint never confirmed that evdo b was part of network vision - consolidating cell sites to cosited lte, 1x and evdo a and enhancing back haul being the key elements of that.
If sprint is spectrum constrained now going from evdo a to b won't help all that much, remember that the spectrum is spread among many customers so if you can imagine an average tower with 20 active users in its serviced geography and the tower has stacked cells or say 3 1.25 MHz forward channels available, those active users are going to see no more than about 3.1 mbps x 3 / 20 = 0.465 Mbps. Bonding those three channels will keep the observed performance at 9.3 x 3 / 20 = 0.465 Mbps presuming the same order modulation. (there is actually some efficiency improvement but it's on the order of 10%). If you happened to run across an unloaded tower yes, you could see 9 Mbps if they are switching to rev b and have 3 carriers available.
But that's not currently sprints problem as I understand it. The problem is too many users in too little spectrum.
And, again, I'd only ever heard rumors about sprint using rev b, I'd not seen anything official. Could be wrong, of course.
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