AGPS isnt similar to GPS... it is GPS. Like you say the almanac (and ephemeris) data is preloaded over an IP network to provide for a better TTFF (Time-To-Firs

AGPS isnt similar to GPS... it is GPS. Like you say the almanac (and ephemeris) data is preloaded over an IP network to provide for a better TTFF (Time-To-First-Fix). Also since the locations of the currently associated mobile tower is known, that is used as a seed for the GPS fix (or even a crude triangulation based on the signal strength from multiple towers).