AirPrime HL7800 (using LTE-M1)
I’m trying to get neighboring cell tower information to feed into a geolocation database (e.g. Google, Skyhook) but have been running into trouble.
I’m aware of both the AT+KCELL and AT%MEAS commands, but I’m not getting everything I need.
The databases require MCC, MNC, LAC and CID. I was told that the CID values are unique, but I have no idea how a 3-digit decimal number could be a unique value by itself. Also, I can’t seem to get MCC/MNC/LAC for neighboring cells via AT%MEAS.
1) Any thoughts on this? I’m dissapointed with this so far as cellular triangulation is a primary feature we were told would be possible, manually.
2) I’m only getting 3 towers, which is odd as I see many LTE towers nearby. Do I need to change bands to get more towers? Suggestions?
3) Shouldn’t AT+KCELL deliver information about more towers than just one?
at+cops? +COPS: 0,0,"Verizon Wireless",7 at+creg=2 OK at+creg? +CREG: 2,1,"BE43","02E8B302",7 at+KCELL=0 +KCELL: 0 +KCELL: 0 +KCELL: 3,5,130184,2e8b302,172,48707,41,20,14,6,5230,178,34,46,5230,291,33,2 at%MEAS="97" %MEAS: EARFCN=5230, CellID=172, RSRP=-100, RSRQ=-9 %MEAS: EARFCN=5230, CellID=178, RSRP=-107, RSRQ=-16 %MEAS: EARFCN=5230, CellID=291, RSRP=-107, RSRQ=-17