Assisted GPS (AGPS) on SIM7600 module - still an issue

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Hi All,

I am at a bit of a loss here, as the only place I have seen this discussed has been here: viewtopic.php?t=250657. Unfortunately, the solution in this thread did not work for me.

The short of it is that I recently got a SIM7600G breakout board, it works with connecting with my SIM to the Internet and all, but I also receive the following in response to my setup:

Code: Select all

OK
+CGPS: 0

I am currently interacting with the board via USB and with the "AT Command Tester For Simcom Modules", so I don't think it's a voltage issue as the other final post indicated. My current setup is as follows, all "OK" in response and no errors:

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AT+CGSOCKCONT=1,"IP","APN_HERE"
AT+CGPSURL="supl.google.com:7276"
AT+CGPSSSL=0
AT+CGPS=?
AT+CGPS?
AT+CGPS=0
AT+CGPS=1,3
AT+CGPS?

Any help would be greatly appreciated!

[testpost]

I wouldn't consider this fully resolved yet, but it does look like that the "UE-based" mode (option 2) works, while UE-assisted mode (option 3) does not work. Both rely on the CGPSURL of supl.google.com:7276, the SUPL server. I can confirm that this does indeed still work. 7276 is the non-certificate one, whereas port 7275 supports TLS with a valid certificate. Below are my commands that yield (after 30 seconds post AT+CGPS=1,2) a GPS result in the format of DMS (degrees, minutes, seconds).

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AT+CGSOCKCONT=1,"IP","APN_HERE"
AT+CGPSURL="supl.google.com:7276"
AT+CGPSSSL=0
AT+CGPS=0
AT+CGPS=?
AT+CGPS?
AT+CGPS=1,2

Hopefully this can demystify some things for future users. It's also useful to note that if you have a ceramic GPS antenna attached, it will fallback on standalone GPS automatically if UE-based fails for whatever reason (I imagine signal strength being the issue here).

[testpost]

Bump. Anyone?