Sprint Gets Behind UMTS TDD Too
*Curious
"This move does not appear to be an indication that Sprint has chosen UMTS TDD over any other technology."
It doesn't? Seems like it to me.
It doesn't? Seems like it to me.
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Just wait until nextel18 finds out that Sprint isn't 100% behind Qualcomm, that it's interested in other technologies as well. He'll, well, probably "have" a brick.
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tropicalhaven said:
Just wait until nextel18 finds out that Sprint isn't 100% behind Qualcomm, that it's interested in other technologies as well. He'll, well, probably "have" a brick.
Oh, he's already got one...for a brain.
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why would i care that sprint wouldnt be 100 percent behind qualcomm?
by the way, sprint is doing rev o and rev a which are both by qualcomm and qchat which is also by qualcomm.
just becuase they are testing this, doesnt mean they will stick with it... flarion or wimax will win in this situation becuase of the bandwidth and latency.
by the way, sprint is doing rev o and rev a which are both by qualcomm and qchat which is also by qualcomm.
just becuase they are testing this, doesnt mean they will stick with it... flarion or wimax will win in this situation becuase of the bandwidth and latency.
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muchdrama said:
"This move does not appear to be an indication that Sprint has chosen UMTS TDD over any other technology."
It doesn't? Seems like it to me.
Sprint is pretty much testing everything. They are also working with samsung to test WiBro (a WiMAX derivative) and Motorola to test 802.16e (mobile wimax someday). Sprint is just being thorough and they are probably making sure every vendor knows they have other options.
I don't think they'll do UMTS TDD unless there are substantial improvements to it for a simple reason: voice. UMTS TDD is reported to have some problems with latency and jitter by its existing subscribers and that does not work for voip.
TDD anything is kind of appealing fo...
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viper said:...muchdrama said:
"This move does not appear to be an indication that Sprint has chosen UMTS TDD over any other technology."
It doesn't? Seems like it to me.
Sprint is pretty much testing everything. They are also working with samsung to test WiBro (a WiMAX derivative) and Motorola to test 802.16e (mobile wimax someday). Sprint is just being thorough and they are probably making sure every vendor knows they have other options.
I don't think they'll do UMTS TDD unless there are substantial improvements to it for a simple reason: voice. UMTS TDD is reported to have some problems with latency and jitter by its existing subscribers and that does not work for voip.
TDD
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Companies have long been unhappy with 3G but the tests are really about something else.
Sprint-Nextel have a lot of spectrum up at 2.5 ghz and that creates opportunities for new services so they are looking for a technology that will enable them to do more than mobile voice and tiny bits of data.
They want to be able to offer DSL-like services in areas with low population density, true enterprise class mobile data services (ev-do, hsdpa don't do this because of latency, data rates, jitter, etc.) and fixed voice amongst many others. They are also testing a bit.
Migrating to an ip core is also part of the sell. UMTS, GSM and even cdma IS-95 and 1xrtt are pretty much circuit switched voice and require their own proprietary, expensive ...
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Sprint-Nextel have a lot of spectrum up at 2.5 ghz and that creates opportunities for new services so they are looking for a technology that will enable them to do more than mobile voice and tiny bits of data.
They want to be able to offer DSL-like services in areas with low population density, true enterprise class mobile data services (ev-do, hsdpa don't do this because of latency, data rates, jitter, etc.) and fixed voice amongst many others. They are also testing a bit.
Migrating to an ip core is also part of the sell. UMTS, GSM and even cdma IS-95 and 1xrtt are pretty much circuit switched voice and require their own proprietary, expensive ...
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viper said:
Operators, many of whom own fixed, wireline, mobile assets want one core network that is IP based. that reduces operating costs and it makes application development and management easier and quicker.
That sheds some light on things. Thanks, Vipe.
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yea, that is true... they can test all they want but i think wimax and flarion will be the choice becuase of what you just mentioned with handoffs and latency and most important voip..
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I'm pretty sure WiMAX will not be the choice. Sprint-nextel are supposed to do something with that spectrum (2.5 GHz) sometime within 3-4 years time.
They have been very clear in their desire for full mobility and voip over mobility. The mobile wimax spec is not even done yet and I can guarantee that its going to be a lot harder and slower to implement well than wimax proponents want you to believe.
Mobility is pretty complex and doing it well and efficiently is somewhat hard. Power consumption is also a big issue in the mobile space and its foreign to most future wimax vendors. Its going to take the WiMAX group a good 2-3 years to get that going and it still might be less efficient than WCDMA and EV-DO.
Remember sprint has to do...
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They have been very clear in their desire for full mobility and voip over mobility. The mobile wimax spec is not even done yet and I can guarantee that its going to be a lot harder and slower to implement well than wimax proponents want you to believe.
Mobility is pretty complex and doing it well and efficiently is somewhat hard. Power consumption is also a big issue in the mobile space and its foreign to most future wimax vendors. Its going to take the WiMAX group a good 2-3 years to get that going and it still might be less efficient than WCDMA and EV-DO.
Remember sprint has to do...
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This forum is closed.
