Cellular UDP on nRF9151 DK does not enter PSM

[_rd]

Hello,

I am trying to measure nRF9151 current using Power Profiler Kit II, running Cellular UDP project on EVK and following the steps in:

https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/samples/cellular/udp/README.html

Added the following lines to prj.conf:

CONFIG_SERIAL=n

CONFIG_TFM_LOG_LEVEL_SILENCE=n

CONFIG_UDP_DATA_UPLOAD_FREQUENCY_SECONDS=30

It seems the modem doesn't enter PSM mode in the image below:

Thanks in advance for your comments and insight to help resolve this issue.

Roya

[Elfving]

Hi Roya,

Are you sure that you are requesting PSM, etc.?

Could you try running eg. XMONITOR for me? There is a bit on this here and here.

Regards,

Elfving

[_rd]

Hi Elfving,

My understanding was that running Cellular UDP sample project would be sufficient as a standalone code to check power consumption in PSM mode. PSM is already enabled with 60 min RPTAU, and I just need to configure the data upload size (default: 10) and upload frequency (e.g. 30 sec).

Please see below the prj.conf of UDP project:

# General config
CONFIG_PICOLIBC_IO_FLOAT=y
CONFIG_NCS_SAMPLES_DEFAULTS=y
CONFIG_SERIAL=n
CONFIG_TFM_LOG_LEVEL_SILENCE=n

# Network
CONFIG_NETWORKING=y
CONFIG_NET_NATIVE=n
CONFIG_NET_SOCKETS=y
CONFIG_NET_SOCKETS_OFFLOAD=y
CONFIG_POSIX_API=y

# LTE link control
CONFIG_LTE_LINK_CONTROL=y

# Modem library
CONFIG_NRF_MODEM_LIB=y

# Heap and stacks
CONFIG_HEAP_MEM_POOL_SIZE=1024
CONFIG_MAIN_STACK_SIZE=4096
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048

CONFIG_UDP_DATA_UPLOAD_FREQUENCY_SECONDS=30

# LTE parameters
## PSM
CONFIG_UDP_PSM_ENABLE=y
CONFIG_LTE_PSM_REQ_RPTAU="00100001"
CONFIG_LTE_PSM_REQ_RAT="00000000"

## eDRX
CONFIG_UDP_EDRX_ENABLE=n

## RAI
CONFIG_UDP_RAI_ENABLE=y

## Enable required LTE link control modules
CONFIG_LTE_LC_EDRX_MODULE=y
CONFIG_LTE_LC_PSM_MODULE=y
CONFIG_LTE_LC_RAI_MODULE=y

- On your second question, please see below the result:

> AT+CPSMS=1,,,"00101000","01000001"
OK
> AT+CPSMS?
+CPSMS: 1,,,"00101000","01000001"
OK
> AT%XMONITOR
%XMONITOR: 5,"","","302720","757B",7,12,"007A637A",101,5060,54,34,"","11100000","11100000","01001001"
OK

It seems the network has not enabled the requested PSM mode, is it correct?

Thank you,

Roya