Using the nRF9160-DK together with the Power Profiler Kit 2, I observe sometimes a longer period (1 minute) of a 50mA consumption before entering PSM mode.
Is there a explanation for that? Could that behavior be "forecasted", or better disabled?
Using the nRF9160-DK together with the Power Profiler Kit 2, I observe sometimes a longer period (1 minute) of a 50mA consumption before entering PSM mode.
Is there a explanation for that? Could that behavior be "forecasted", or better disabled?
Hi,
I am experiencing a very similar behaviour:
Sending short UDP packages every 15 minutes. NB-IOT as access technology.
The modem recognizes the roaming situation (correctly).
After every 2 hours there are the same longer periods (about 2 minutes!) of a 50 mA consumption.
Modem 1.3.2., NCS 2.0.0, nrf connect for desktop 3.11.1.
I checked the USIMs in use:
The EF_HPPLMN (ID '6F31' in ADF USIM) contains 0x01. This corresponds to the two hours "high consumption slots".
I am currently checking with the operator on the USIM configuration, but this is ongoing.
The EF_HPPLMN defines the HPPLMN search period (in priciple). But there are several exceptions for the modem to be considered (defined in 3GPP TS 23.122. Too complicated for me ;-)).
So I have the same question as Armin:
Is it possible to influence the HPPLMN search time by the application side (e.g. using AT-commands) to avoid the additional power consumption due to HHPLMN search?
Regards,
Michael
Hi,
I am experiencing a very similar behaviour:
Sending short UDP packages every 15 minutes. NB-IOT as access technology.
The modem recognizes the roaming situation (correctly).
After every 2 hours there are the same longer periods (about 2 minutes!) of a 50 mA consumption.
Modem 1.3.2., NCS 2.0.0, nrf connect for desktop 3.11.1.
I checked the USIMs in use:
The EF_HPPLMN (ID '6F31' in ADF USIM) contains 0x01. This corresponds to the two hours "high consumption slots".
I am currently checking with the operator on the USIM configuration, but this is ongoing.
The EF_HPPLMN defines the HPPLMN search period (in priciple). But there are several exceptions for the modem to be considered (defined in 3GPP TS 23.122. Too complicated for me ;-)).
So I have the same question as Armin:
Is it possible to influence the HPPLMN search time by the application side (e.g. using AT-commands) to avoid the additional power consumption due to HHPLMN search?
Regards,
Michael
Hi,
I found the same pattern for LTE-M:
The current of the "high consumption slots" is lower (about 1 minute instead of 2,5 minutes with NB-IOT), the duration is shorter, too (30mA instead of 50mA). The timing is identical.
Regards
Michael
I can confirm that the manual network selection with AT+COPS prevents the HPPLMN search and therefore the additional power consumption.
Same test scenario as above, but with manual network selection:
No additional power consumption after every 2 hours any more.
Thanks for clarification!