user29937: I'm trying to set up a GPS tracking solution in a rural area. The catch is the GPS trackers need to be lower cost (power and cash), because there will be a good amount of them.
So I'm trying to find a solution where I can benefit from A-GPS using a beacon of some sort to handle any cpu/server calculations while receiving GPS noise from the tracking devices (I think that's the idea). I've read up a bit on Mobile Station Assisted (MSA) GPS, but I'm not entirely sure what solutions there are to handle this. 
Any help or advice is appreciated.
Example:
Arduino GPS tracker x 200 ---[RF comms/GPS noise]--->  Beacon/Tower  ---[Internet]---> GPS Server

user28847: I'm not sure I get what you want, but the A7 module of Ai-Thinker is a good GPRS module with GPS in it.

29937: <p>I'm trying to set up a GPS tracking solution in a rural area. The catch is the GPS trackers need to be lower cost (power and cash), because there will be a good amount of them.</p>

<p>So I'm trying to find a solution where I can benefit from A-GPS using a beacon of some sort to handle any cpu/server calculations while receiving GPS noise from the tracking devices (I think that's the idea). I've read up a bit on Mobile Station Assisted (MSA) GPS, but I'm not entirely sure what solutions there are to handle this. </p>

<p>Any help or advice is appreciated.</p>

<p>Example:</p>

<p>Arduino GPS tracker x 200 ---[RF comms/GPS noise]--->  Beacon/Tower  ---[Internet]---> GPS Server</p>
 28847: <p>I'm not sure I get what you want, but the A7 module of Ai-Thinker is a good GPRS module with GPS in it.</p>
