Quote:
Originally Posted by stevedog1
Although you bagel analogy is nice, The argument is not whether or not you should have a data plan on your touch. The argument is that Jethro claims that you have to have a data plan in order to Navigate which is not true.
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Read post 42 again.
and here
A-GPS utilizes data from a satellite reference network that is continually updated in the TCS XLP A-GPS Server.
The TCS A-GPS Server sends this aiding data to the mobile over an Internet Protocol (IP) connection established by the mobile. The Aiding Data assists the GPS receiver in the mobile handset to determine where to acquire overhead satellites. This significantly increases the sensitivity of the device so it works effectively from inside a briefcase or pocket. The Time to First Fix of the device is quicker, helping keep battery consumption to a minimum. The combined features make TCS' A-GPS Server the most accurate and commercially viable option for mobile positioning.
Taken from here:
http://findarticles.com/p/articles/m...3/ai_113529025