| reply to chlen
Re: airave I think the GPS does more than make sure you're in the US. Sprint can't use the spectrum the Airave operates in if they don't have the license to that band in the area you're in. It may also have some E-911 functionality, but I'm not sure about that. |
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| said by CMoore2004:I think the GPS does more than make sure you're in the US. Sprint can't use the spectrum the Airave operates in if they don't have the license to that band in the area you're in. It may also have some E-911 functionality, but I'm not sure about that. This is an excellent point! Until you mentioned it, I assumed the GPS was only for the carrier's benefit (making sure you're not taking the unit out of your calling area). I was thinking it'd be fun to figure out how to spoof the GPS signal and use it overseas. I'd still love to figure out how to do that, but now I wouldn't just piss off the carrier -- I'd be pissing off the FCC and it's foreign counterparts too! Two birds with one stone!
- Tate
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It's time to let go of TDM people. If it's not IP-based, it's crap! |
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 tmh
@maxonline.com.sg | reply to CMoore2004
said by CMoore2004:I think the GPS does more than make sure you're in the US. Sprint can't use the spectrum the Airave operates in if they don't have the license to that band in the area you're in. It may also have some E-911 functionality, but I'm not sure about that. So does that mean you can't use it in the basement, precisely where it'd do the most good?
T-Mobile's UMA capable phones work better in that case. I'm out of the country now, but I have local calling thanks to a UMA-capable phone and WiFi I'm leeching off the neighbors. |
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 chlenEthically ChallengedPremium
join:2001-01-16
Albany, NY | said by tmh :said by CMoore2004:I think the GPS does more than make sure you're in the US. Sprint can't use the spectrum the Airave operates in if they don't have the license to that band in the area you're in. It may also have some E-911 functionality, but I'm not sure about that. So does that mean you can't use it in the basement, precisely where it'd do the most good? T-Mobile's UMA capable phones work better in that case. I'm out of the country now, but I have local calling thanks to a UMA-capable phone and WiFi I'm leeching off the neighbors. it has 20-30 feet of wire to a powerful GPS antenna, but it would work in the basement since that is what it is for.
You would hook it up to your router and then your house is covered. It covers my basement very well, and the second floor, the device is on the first.
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tmh
@verizon.net | said by chlen:it has 20-30 feet of wire to a powerful GPS antenna, but it would work in the basement since that is what it is for. I'm beginning to think the GPS is required more for syncing the CDMA chip sequence.
CDMA cell towers need an accurate timesource to stay in sync. It's one of the reasons why you can still get a good signal from multiple towers even when individual towers have a marginal signal. All GPS satellites carry an atomic clock, so putting up a GPS antenna is an an easy way to get the time.
If your local femtocell is to work the same way, it needs to sync up too. Of course, the provider can probably add in other interesting "features" like limiting the calling area.
Have you actually tried using it out of the country to see if it'll lockout?
This need for a time signal seems like a shortcoming of CDMA femtocells, since you must always put the GPS antenna somewhere close to the outside. Using NTP won't get you an accurate enough timelock. You probably couldn't use it in a basement facility of an office building for example.
Looks like UMA's a better bet in this case. |
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chlenEthically ChallengedPremium
join:2001-01-16
Albany, NY | Maybe, the time sequencing is a part of it. The rep told me pretty openly that they simply did not want people plugging it in Europe and being able to use sprint like a domestic. That it was to verify location. The GPS seems pretty powerful on the device though, and does need a lock. You could not set the device up in your basement unless you put it near a window, but you would want it near the wifi router anyways.
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This is not the greatest post in the world, no, this is just a tribute!
Слесарь-гинеколог |
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tmh
@dodo.com.au | said by chlen:The rep told me pretty openly that they simply did not want people plugging it in Europe and being able to use sprint like a domestic. Might be worth while to try it just for grins.  If it works, you're golden. |
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