TD-SCDMA: will T-Mobile US deploy?

[Scottish Skyedance]

it's still too early to discuss about 3G for T-Mobile
I just read some economics news, and states China will widely deploy TD-SCDMA as 3G
after a while of searching, I only can find these in English
http://www.3gpp.org/ftp/PCG/PCG_13/D...F/PCG13_10.pdf (page 23)
http://www.tdscdma-forum.org/EN/index.asp
http://en.wikipedia.org/wiki/TD-SCDMA
TD-SCDMA (Time Division-Synchrous Code Division Multiple Access)

[DRNewcomb]

Have you considered TD-CDMA? I haven't seens any tea leaves indicating that T-Mobile woud go any way but WCDMA.

[AwaySooner]

I am pretty sure t-mobile is going with UMTS, which use W-CDMA as standard. I received an email about a contract job the other day for the Program Manager position (UMTS development team) here in Bellevue.

[The Mac Ace]

wcdma is the way tmo is gonna go no doubt on 1700 or 2100

[cleancut1]

For the non-techie -- does this mean that basically some day in the next couple of years, one phone (now GSM) won't work everywhere in the world anymore? That would be a big loss. I don't know what I'm talking about, of course, but when I see different frequencies and technologies being mentioned, I get nervous.

[heybabyheybaby]

For the non-techie -- does this mean that basically some day in the next couple of years, one phone (now GSM) won't work everywhere in the world anymore? That would be a big loss. I don't know what I'm talking about, of course, but when I see different frequencies and technologies being mentioned, I get nervous.

A. I wouldn't be nervous and B. it depends what you are going to do with the phone... I think you will see GSM supported for many years to come alongside UMTS. Now you may not be able to use a very fast data service with the same device all over the world but as for talking and GPRS/EDGE data on GSM I think a quadband phone would be able to work just about anywhere for the forseeable future. (and many, if not most newly-announced non-3G phones coming out from the major players seem to be quadbands so that's good.)

Besides, given the snail-paced adoption (by users, not necessarily operators) of 3G around the world, I think GSM is even more assured to be around for long.

[jervin123]

yea it will be here for a long time because gsm is a key part of the umts/w-cdma from my point of view cause for now umts coverage is super limited and i used a v3x in the uk and in the us borrowed from my friend and saw how in the uk it drifted in and out of 3g coverage

[ImmerStark]

deploying td-scdma wouldn't be such a bad move. it has two different channel size options, 1.3MHz and 5MHz. so t-mobile could deploy the smaller channel size in existing spectrum and then move up to the larger channel size as users were transitioned away from gsm. no new spectrum required.

[Moto_VJ]

wcdma is the way tmo is gonna go no doubt on 1700 or 2100

Actually, it'll be on both because WCDMA uses 2100 for downlink and 1900 or 1700 for uplink.

[mroach]

Actually, it'll be on both because WCDMA uses 2100 for downlink and 1900 or 1700 for uplink.

Nothing would make me happier than T-Mobile going with 1900 uplink.

[Scottish Skyedance]

deploying td-scdma wouldn't be such a bad move. it has two different channel size options, 1.3MHz and 5MHz. so t-mobile could deploy the smaller channel size in existing spectrum and then move up to the larger channel size as users were transitioned away from gsm. no new spectrum required.

the only concern of TD-Sync CDMA is phone support
if it can co-exist with UMTS (tri-mode 3G/GSM), it's not a bad 3G option (more spectrum effeciency)

[krazy]

Nothing would make me happier than T-Mobile going with 1900 uplink.

Not going to happen, unfortunately. That's because the 1900 uplink of WCDMA/UMTS2100 is right smack in the middle of the downlink band used by PCS (GSM and CDMA 1900Mhz.) in North America.