maemo.org - Talk - View Single Post - Why aGPS in N810, iPhone ?

	allnameswereout	2008-09-04 , 23:25
	Posts: 3,397 \| Thanked: 1,212 times \| Joined on Jul 2008 @ Netherlands	#44

Originally Posted by ragnar

You're mixing up a couple of things, hopefully accidentally. AGPS is not a chipset like Sirf, it's a way to assist the selected chipset with cell signals. Many SIRF based solutions also use AGPS additionally to improve performance. iPhone is using the Broadcom chip and AGPS.

http://seekingalpha.com/article/4774...ps-partnership

Or:
http://artoftheiphone.com/2008/06/10...-assisted-gps/
"The main advantage of Assisted GPS (AGPS) for the iPhone is that it will allow the iPhone’s GPS to operate in weaker signal conditions and determine positioning quicker than most standalone GPS receivers. AGPS also helps save battery power by handing off some computational duties to an assistance server and by allowing iPhone users to turn GPS off and on with less inconvenience."

The above is about iPhone 3G.

The original iPhone uses WiFi for positioning; Skyhook Wireless's proprietary solution.

Darius, you have a good point in some sense but you don't understand a lot of technical details.

Sirf III runs on ye olde TomTom, but these devices don't do much except navigation. A NIT can do so much more.

I think the fact you bought a 10 USD Sirf III with BlueTooth was a good choice, and I think it is best to leave it as-is. Nokia is pretty much aware of the quality of their on-board GPS chipset on the N810.

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Last edited by allnameswereout; 2008-09-04 at 23:31.

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