I have a working application on Integrated GPS. I am located in India.Now i want to use AGPS and Network based positioning.
I have the following questions:-
1. In AGPS if the user has reception from 2 satellites then the third positioning data is taken from the Receiver attached to the cell tower.This makes First Fix also faster.But the network operator should be providing this service.Is this right??Does the calculation happen in the cell device like in Integrated GPS or does AGPS require a location server?
2. In network based positioning,position is calculated using the CellID. The cell ID and other information is sent to a location server which calculates the position and sends to the mobile device.Is that correct?Are the neighbouring cellIDs also passed which is equivalent to triangulation or different network operators do it differently?what is the difference between triangulation and this.
3.In India are there any network operators providing support for the above methods...
Nokia Champions i have been trying to get accurate information on this to make some technical decisions..Please help...