Why from TDMA to GSM?
From what I gather (for the most part), people got alot better coverage with TDMA, so what's the reason for Cingular switching to GSM?
I could understand GSM to WCDMA, cause overall it'll be better in voice and data.
But TDMA to GSM doesnt make sense to me since people say TDMA had better coverage and so on.
IM NOT TRYING TO START ANYTHING.
Im only curious, that's all.
I could understand GSM to WCDMA, cause overall it'll be better in voice and data.
But TDMA to GSM doesnt make sense to me since people say TDMA had better coverage and so on.
IM NOT TRYING TO START ANYTHING.
Im only curious, that's all.
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Do you know if Cingular was juggling between going GSM or CDMA? Or was GSM the hands down choice for them?
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it was GSM all the way CDMA was not even a thought CDMA would have been really expensive and there was to much demand for international roaming. GSM is cheap to maintain all digital does everything by itself.
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Thanks so much.
You mention Intnernational roaming. That would be very limited with most of Cingular's handsets though, the majority of GSM overseas uses the 900 mhz band, the 1800 band is very limited.
Are they focused only on a certain area outside of America?
You mention Intnernational roaming. That would be very limited with most of Cingular's handsets though, the majority of GSM overseas uses the 900 mhz band, the 1800 band is very limited.
Are they focused only on a certain area outside of America?
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Most major cities in europe are on the 1800MHz band. The demand for international raoming is the tourest areas of europe not the more rural areas on 900mhz. Yes Cingular is focused on the major markets in europe.
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That makes sense.
I posted this in response to simplymarcus's response, that I believe that the handsets Cingular offers aren't practical for internation roaming (majority of them) due to the majority of GSM outside of America running on the 900 mhz band. I know they use 1800 as well, but not as broadly as the 900.
Is Cingular focused only on a certain area or areas outside of America?
I posted this in response to simplymarcus's response, that I believe that the handsets Cingular offers aren't practical for internation roaming (majority of them) due to the majority of GSM outside of America running on the 900 mhz band. I know they use 1800 as well, but not as broadly as the 900.
Is Cingular focused only on a certain area or areas outside of America?
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That is a really good questionm that I wish I had the answer to... I guess they figure that the people that really need it would not worry and get the quad band, you know?
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Yeah, I hear ya.
Or there's also the option of just buying a cheap little phone with the 900 band, and not limiting your choice of Cingular phones to only the ones with quad band.
From what I know and what I've seen, I believe Motorola is the only one that offers quad-bands. Maybe the new Blackberry too.
Though, I'm a hardcore Sony Ericsson guy! So I'd just go with the inexpensive phone supporting 900mhz. Though I still have a T68i and T610 which I used when I was with T-Mobile a few years back.
All in all, I was just curious, that's all! 🙂
Or there's also the option of just buying a cheap little phone with the 900 band, and not limiting your choice of Cingular phones to only the ones with quad band.
From what I know and what I've seen, I believe Motorola is the only one that offers quad-bands. Maybe the new Blackberry too.
Though, I'm a hardcore Sony Ericsson guy! So I'd just go with the inexpensive phone supporting 900mhz. Though I still have a T68i and T610 which I used when I was with T-Mobile a few years back.
All in all, I was just curious, that's all! 🙂
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Nokia makes the 6230 and 6620 that are world phones. Either way tho, you are paying a pretty penny for "world" phones.
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GSM allows more users than TDMA within the same bandwidth. CDMA beats them both.
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Yeah, true, but I believe WCDMA will out-do all three of them.
I sooo can't wait for the deployment of WCDMA and HSDPA!! 😁
I sooo can't wait for the deployment of WCDMA and HSDPA!! 😁
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HeroPsychoDreamer said:
Yeah, true, but I believe WCDMA will out-do all three of them.
I sooo can't wait for the deployment of WCDMA and HSDPA!! 😁
Nope. Here are the minimum spectral efficiencies:
CDMA2000 1x = 105 users per 5Mhz
CDMA (IS-95A = 51 users per 5Mhz
W-CDMA = 62 users per 5Mhz
It's a cost vs. benefit scenario. GSM gets the nod for better voice quality, but my GSM picks up background noise whereas my CDMA didn't.
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Is that the US version of WCDMA or the European?
The US version works on 850 and 1900
The Euro version works on 2100. Does the Euro version beat CDMA2000?
The US version works on 850 and 1900
The Euro version works on 2100. Does the Euro version beat CDMA2000?
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HeroPsychoDreamer said:
Is that the US version of WCDMA or the European?
The US version works on 850 and 1900
The Euro version works on 2100. Does the Euro version beat CDMA2000?
I dunno. My reference doesn't point out the difference, if any, across different frequencies. The reference posted is just the amount of users within a given amount of spectrum on a given technology. The frequency no doubt has it's own basis, probably more related to signal strength than anything.
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Also, the new band(s) being offered elsewhere [450,2100] are a result of other bands (aka frequencies) being built out &/or used for something else.
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I know Cingular couldnt use the 2100 band cause it belongs to the DOD.
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canddmeyer said:HeroPsychoDreamer said:
Yeah, true, but I believe WCDMA will out-do all three of them.
I sooo can't wait for the deployment of WCDMA and HSDPA!! 😁
Nope. Here are the minimum spectral efficiencies:
CDMA2000 1x = 105 users per 5Mhz
CDMA (IS-95A) = 51 users per 5Mhz
W-CDMA = 62 users per 5Mhz
It's a cost vs. benefit scenario. GSM gets the nod for better voice quality, but my GSM picks up background noise whereas my CDMA didn't.
TDMA = 24 users per 5Mhz
GSM w/AMR = 28 users per 5Mhz
GSM FFR w/AMR = 34 users per 5Mhz
Start something, nah, just answering a question. By the way, I am a Cingular customer, and a former Verizon customer.
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canddmeyer said:
GSM allows more users than TDMA within the same bandwidth. CDMA beats them both.
OOPS, more users per Mhz
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😎 GSM is better overall for the data applications, txt msgs, MMS, wireless internet and thats wher ethe real money is my friend data. Soon they'll be scrapping GSM for 3G. Just like GAIT was scrapped for GSM.
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TDMA was to stupid to move to UMTS or HSPDA. It did not support the MMS will it does but sending a picture through TDMA takes to long. Adding sounds to pics would just not work on TDMA. Voice clarity was not the big reason for the move to GSM it was part of it but the real reason was data transfers. TDMA voice quality was pretty good with a great digital to analog and back again hand off.
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Everyone pretty much got it right in a nutshell. They went with GSM because it's the world wide 'standard'. If they were to have went CDMA, they still would have had to deal with international roaming etc. If you notice most phone manufactures are geared toward making GSM equipment, with a few exceptions like Kyocera that makes CDMA exclusively. By Cingular going with GSM, it allows for them to purchase handsets cheaper and allows for them to add the international frequencies for certain hand sets. Within the next few months you'll see most of Cingulars phones will have at least one 900/1800 band built in. Also, the SIM issue played a lot to do with it as well, more convenient for the customer.
I will say that if they would have went CDMA,...
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I will say that if they would have went CDMA,...
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Didn't Sprint want to buy AT&T's TDMA network, or has that already happened?
GSM does indeed lack on a lot of angles...so hats off to Cingular for a job well done. They made this technology work, and wonderfully here in the U.S. Coverage is outstanding, over 50 million people use it, and it's growing in scope all the time.
Can't wait for UMTS!!!
GSM does indeed lack on a lot of angles...so hats off to Cingular for a job well done. They made this technology work, and wonderfully here in the U.S. Coverage is outstanding, over 50 million people use it, and it's growing in scope all the time.
Can't wait for UMTS!!!
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I think youre trying to start something b/c you dont throw cdma in the mix with cingular !
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What are you talking about? Im just trying to educate myself. Don't be so uptight.
ask Shayby or jramossteel about me, I'm not the type to go anywhere and start anything.
ask Shayby or jramossteel about me, I'm not the type to go anywhere and start anything.
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Very true... He is always on our side and does not start stuff... He is our buddy!
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I agree that it did, but just because something sounds like something its really not isnt going to stop me. Just trying to educamacate myself! 😁
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the way i understand it.... GSM was cheaper than CDMA since CDMA requires royalties to be paid to qualcomm for their "intelectual property".
So Cingular picked GSM = no royalty fees.
So Cingular picked GSM = no royalty fees.
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HeroPsychoDreamer said:I remember just before Cingular started its switch from TDMA to GSM. TDMA coverage at the time was great as the technology had more or less been perfected. It just took some time for GSM to smooth itself out here in the States.
From what I gather (for the most part), people got alot better coverage with TDMA, so what's the reason for Cingular switching to GSM?
I could understand GSM to WCDMA, cause overall it'll be better in voice and data.
But TDMA to GSM doesnt make sense to me since people say TDMA had better coverage and so on.
IM NOT TRYING TO START ANYTHING.
Im only curious, that's all.
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muchdrama said:HeroPsychoDreamer said:I remember just before Cingular started its switch from TDMA to GSM. TDMA coverage at the time was great as the technology had more or less been perfected. It just took some time for GSM to smooth itself out here in the States.
From what I gather (for the most part), people got alot better coverage with TDMA, so what's the reason for Cingular switching to GSM?
I could understand GSM to WCDMA, cause overall it'll be better in voice and data.
But TDMA to GSM doesnt make sense to me since people say TDMA had better coverage and so on.
IM NOT TRYING TO START ANYTHING.
Im only curious, that's all.
Would you say that GSM at it'...
(continues)
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And does the rollout of WCDMA (whenever it happens) mean a headache for Cingular customers? For example, having problems being a new technology here in the US and Cingular slowly moving towards having their customers switch to WCDMA, like they did and are doing with TDMA to GSM?
I don't think it will be the same when they upgrade to WCDMA. The way I understand it, WCDMA is backwards compatible with GSM, TDMA is not compatible with GSM.
Shouldn't be a problem. They will launch the new service in the largest markets and use GSM to fill in coverage areas until it's launched nationwide.
I don't think it will be the same when they upgrade to WCDMA. The way I understand it, WCDMA is backwards compatible with GSM, TDMA is not compatible with GSM.
Shouldn't be a problem. They will launch the new service in the largest markets and use GSM to fill in coverage areas until it's launched nationwide.
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HeroPsychoDreamer said:...muchdrama said:HeroPsychoDreamer said:I remember just before Cingular started its switch from TDMA to GSM. TDMA coverage at the time was great as the technology had more or less been perfected. It just took some time for GSM to smooth itself out here in the States.
From what I gather (for the most part), people got alot better coverage with TDMA, so what's the reason for Cingular switching to GSM?
I could understand GSM to WCDMA, cause overall it'll be better in voice and data.
But TDMA to GSM doesnt make sense to me since people say TDMA had better coverage and so on.
IM NOT TRYING TO START ANYTHING.
Im only curious, that's all.
(continues)
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Also, GSM is the standard in most parts of the world, so switching to it means that we can use a lot of the cool new phones coming out of Europe and China. If American carriers stayed with TDMA it would be a little like the whole foot/meter thing all over again (the US has its system - the rest of the world has theirs). It may have been a little iffy at first, but in the long run it's a good decision.
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Data on GSm is much better on GSM as well than it was ever on TDMA... TDMA data was VERY short lived (from what I was told)
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TDMA as a technology had no future. It was dead because it did not offer a clear upgrade path to 2.5G or 3G. So they had to move to something else.
GSM and CDMA were their only real choices at the time. They went with GSM. Why they picked GSM over CDMA is complicated, and impossible to answer accurately unless you are the CTO who actually made that decision. But it doesn't sound like that's what you were asking anyway.
The coverage issue is simply a matter of time, and old network vs. new network. Cingular (and the former AT&T Wireless) had many years to build out and optimize their TDMA networks, so naturally coverage was good.
It has simply taken some time for them to do the same with GSM. They've actually been fairly fast and agg...
(continues)
GSM and CDMA were their only real choices at the time. They went with GSM. Why they picked GSM over CDMA is complicated, and impossible to answer accurately unless you are the CTO who actually made that decision. But it doesn't sound like that's what you were asking anyway.
The coverage issue is simply a matter of time, and old network vs. new network. Cingular (and the former AT&T Wireless) had many years to build out and optimize their TDMA networks, so naturally coverage was good.
It has simply taken some time for them to do the same with GSM. They've actually been fairly fast and agg...
(continues)
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