When will eDRX+GPS sample program be available on nRF9160?

[Yusuke]

I know PSM+GPS works on nRF9160.

Then when will eDRX+GPS sample program be available on nRF9160? Thanks.

[Yusuke]

Agps is supported in modem fw but not in nrf fw yet

devzone.nordicsemi.com/.../agps-released-in-v1-1-0

[Didrik Rokhaug]

Yes, asset_tracker (and other applications) now supports GPS in eDRX. Sorry for not being clear enough in my last reply.

 

Yusuke said:

I thought "various modes" means eDRX, AGPS, and other modes

 The various modes of the GPS are:

• Single shot (cold start mode by default)
• Position fix per fixed interval, configurable between 10 s - 0.5 hour: first start with cold start, sequential fixes with hot start
• Continuous tracking

[Yusuke]

Hi, Didrik.

nrf v1.3.0 is released.

I would like to use eDRX + Assisted-GPS(google supl server), but asset tracker program uses Nordic supl server. How can you implement it? Thanks

[Didrik Rokhaug]

I am not sure I understand exactly what you are asking here, what exactly is it you want?

Using GPS + eDRX is as simple as just running the GPS while connected to the LTE network, and using LTE.

The program flow might be something like this:

1. Start the application, do various initialization.

2. Connect to LTE network.

3. Connect to server, do initialization that requires LTE.

4. Request (and enter) eDRX

5. Start the GPS

6. Do regular reporting, etc.

When adding A-GPS to the mix, point 5 gets expanded:

5.1 The GPS requests A-GPS data

5.2 Start the SUPL session (at this point, it is recommended to stop the GPS, especially if using NB-IoT)

5.3 Inject SUPL data (and restart the GPS)

Does this answer your questions?

Best regards,

Didrik

[Yusuke]

Thank you. it works out!