Increased latency with concurrent GPS + modem operation in nrf thingy91 due to switching multiplexing

[Govind]

We are seeing issue with concurrent GPS + modem operation (increased latency) in nrf thingy91 due to switching multiplexing.
It was mentioned in the following repo that future modem firmware will allow both modes to be active simultaneously.
Is the new modem firmware available with this feature?

https://github.com/ExploratoryEngineering/nrf9160-gps/tree/master
The nRF9160 shares a single radio for GPS and LTE, and the current modem firmware (0.7.0-29.alpha) only allows one to be active at a time. We therefore have to switch back and forth between these modes in order to collect GPS data and send it. This switching introduces a delay which we minimize by buffering position data and sending it in batches. A future modem firmware will allow both modes to be active simultaneously, which will enable streaming of location data.

[dejans]

Hi,

The example you pointed to and modem firmware version that was intended to be used with the example are quite old.
Currently, GNSS operation is time-multiplexed with LTE which has higher priority by default. Position from GPS receiver can be obtained when LTE is in RRC idle state, power saving mode (PSM) or when LTE modem is deactivated. You can read more about GNSS receiver functionality and GNSS related samples in this guide. Modem firmware binaries are available for download on our nrf9160 Download page.

Best regards,
Dejan