Assisted GPS - AGPS - with Q2501

Hello Open AT community !

I have made lots of GPS applications on the Wismo Q2501, but I must say that the GPS receiver included isn’t as sensible as the new modern ones that are appearing on the market under the names of Supersense, Hi-sense and so on.
I would like to implement A-GPS in Q2501 being helped by a GSM CELL-ID database which I already have.
Can anyone tell me please how can I realize Assisted-GPS by making injection of ephemerides and almanach ?

Please help me, this is a very important question, I would save lots of money and time in development.

I am counting on you,