turn off active time and go directly to power save mode

[visu]

Hi all,

I am currently trying turning off the active time, so that the nrf9160 immediately goes in power save mode after RRC Connected Release.

If I send the command +CPSMS: 1,,,"10101111","11100000" the requested periodic TAU should be 10 minutes and the active time should be deactivated. Am i right?

But the nrf9160 never goes in to power save mode..

[Martin Lesund]

Hello Visu,

The +CPMS command sets the requested periodic TAU and requested active time, the network decides if it will approve these requests or not.

You can read out the values given from the network with the command AT+CEREG?.

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You have requested a Periodic-TAU of "10101111" which is 15 minutes according to Table 10.5.163a/3GPP TS 24.008.

You have requested an Active time of "11100000" which indicates that the timer is deactivated according to Table 10.5.163a/3GPP TS 24.008.

Also, a good idea is to hook up a power analyzer to the device so you could actually see that you go into PSM mode.

What should be mentioned is that we see that usually that networks do not allow roaming SIM cards the PSM feature.
So please test out with a local SIM card.

Best regards,

Martin L.

[visu]

Hi Martin,

Thanks for your quick reply. Of course it is 15min, that was my fault.
I read out the values with XMONITOR, which should be the same with CEREG and i get the value 11100000 for active time, but the nrf9160 does not get into power save mode