Wi-Fi Positioning with DECT NR+ modem firmware

[yali]

I have a nrf9151dk with a nrf7002ek shield. The nrf9151dk has the DECT NR+ PHY firmware running on the modem core.

I would like to do Wi-Fi positioning with the nrf9151dk, whereby I transmit the Wi-Fi scan data found by the nrf9151dk to another device over DECT NR+ connection, and the second device uses a location service to determine the location of the original device.

For this use case, can I use the "location" library on the nrf9151dk to retrieve the wifi scan data, or would I need to implement wi-fi scaning and sending of the scan data myself since I am not using an LTE connection to communicate with a cloud service directly?

[Michal]

How are you going to have the second device connected to the nRF Cloud for location services? Via Wi-Fi as well?

[yali]

Hi Michal, yes that is the plan.

[Michal]

I think it should be doable, as long as you can provide the same input on the second device, but I would have to check that internally to be sure.

The only possible issue I can see is in how the devices get identified maybe.

Best regards,

Michal

[Michal]

The easiest way would be of course to get the first device's location with help of Wi-Fi location services in nRF Cloud and then get the first one's location on the second device from nRF Cloud, if that is a possibility by chance.

Best regards,

Michal

[yali]

Locating the first device without cellular connection is my primary goal. Otherwise I think using the Location library and Wi-Fi Location Services in nRF Cloud would be the best option. 

I will then use the Wi-Fi: Scan example to retrieve scan results on the first device. Transmit them over to the second device over DECT NR+. Then on the 2nd device, send over the Wi-Fi Scan data from the 1st device to nRF Cloud to retrieve the location of the 1st device. 

Could you please elaborate on why you think device identification can be an issue? 

[Michal]

yali said:

Could you please elaborate on why you think device identification can be an issue? 

Just a shot in the dark about any possibility why it wouldn't work.

But I don't think that's an issue.

I have asked about it internally and will let you know when I'll have more information, but if you are able to just try it then that's a good idea.

You can maybe send the data to the PC and then use Postman, CURL or some other tool to test it against nRF Cloud.

Best regards,

Michal

[yali]

Thank you for the insights, much appreciated.

[Michal]

You're welcome.

Consulted with the others and it should work fine, but may require some work from your side to serialize the information and then send the serialized info instead of locally gathered.

Best regards,

Michal