RE: ncs v3.0.0 nRF9160 SMS PSM eDRX

Susheel Nuguru — Mon, 16 Jun 2025 10:38:37 GMT

Luke,

I think SMS queued during PSM and sending when the device is active needs to be supported by the network, else the SMS can be lost (it seems) Or maybe the message gets expired on the network which is different for different networks.

I would ask China Mobile NB-IoT technical guys to see if SMS queue in PSM is supported and find out what their SMS expiry timeouts are in their network. I would also

You need to read the PSM/SMS status dynamically in the code to get more details on network supported timeouts and feature support.

RE: ncs v3.0.0 nRF9160 SMS PSM eDRX

Luke Long — Fri, 13 Jun 2025 13:09:56 GMT

Hi Susheel Nuguru,

Here attached the modem trace, hopefully it's helpfu.

devzone.nordicsemi.com/.../trace_2D00_2025_2D00_06_2D00_13T12_2D00_52_2D00_52.247Z-for-SMS-NG3.mtrace

RE: ncs v3.0.0 nRF9160 SMS PSM eDRX

Luke Long — Fri, 13 Jun 2025 08:40:15 GMT

Hi Susheel Nuguru,

Many thanks. We are also trying to see if we can capture modem trace for your reference. Will update soon.

RE: ncs v3.0.0 nRF9160 SMS PSM eDRX

Susheel Nuguru — Fri, 13 Jun 2025 06:10:39 GMT

Hi Luke,

This seems some issue that needs internal investigation. I have reached to the R&D team by creating an internal investigation tracking thread. For your reference, the internal tracking number is NRF91-2505. I will come back to you when I have more info on this.

RE: ncs v3.0.0 nRF9160 SMS PSM eDRX

Luke Long — Wed, 11 Jun 2025 09:18:04 GMT

Hi,

2nd round SMS testing @ eDRX, please refer to the attached LOG & image

Please help to understand what problem is. Thanks.

[16:52:59.567]收←◆All pins have been configured as non-secure
\0[1;34m[Sec Thread] Secure image initializing![0m
\0TF-M isolation level is: \00x00000001
TF-M Float ABI: Hard
\0Lazy stacking enabled
\0[1;34mBooting TF-M v2.0.0-ncs2[0m
\0
[16:52:59.952]收←◆*** Booting nRF Connect SDK v2.7.0-5cb85570ca43 ***
*** Using Zephyr OS v3.6.99-100befc70c74 ***

Reset reason: power-on reset

MOSH version:       v2.7.0
MOSH build id:      custom
MOSH build variant: dev

[m

[1;32mmosh:~$ [m
[16:53:00.260]收←◆
7[250B[250C[6n
[16:53:01.278]收←◆8[1;33mNo response from the terminal, assumed 80x24 screen size
[m
[16:53:04.258]收←◆[8D[JNetwork registration status: searching
[1;32mmosh:~$ [m[8D[JCurrently active system mode: NB-IoT
[1;32mmosh:~$ [m[8D[JLTE cell changed: ID: 47393341, Tracking area: 7467
[1;32mmosh:~$ [m
[16:53:04.836]收←◆[8D[JRRC mode: Connected
[1;32mmosh:~$ [m
[16:53:07.212]收←◆[8D[JPDN event: PDP context 0 activated
[1;32mmosh:~$ [m
[16:53:07.313]收←◆[8D[JPDN event: PDP context 0, PDN type IPv4 only allowed
[1;32mmosh:~$ [m
[16:53:07.412]收←◆[8D[JModem domain event: Search done
[1;32mmosh:~$ [m[8D[JNetwork registration status: Connected - home network
[1;32mmosh:~$ [m
[16:53:07.525]收←◆[8D[JPSM parameter update: TAU: 1800, Active time: -1 seconds
[1;32mmosh:~$ [m
[16:53:09.025]收←◆[8D
[16:53:09.045]收←◆[JModem config for system mode: NB-IoT
[1;32mmosh:~$ [m[8D[JModem config for LTE preference: No preference, automatically selected by the modem
[1;32mmosh:~$ [m[8D[JCurrently active system mode: NB-IoT
[1;32mmosh:~$ [m[8D[JModem FW version:      mfw_nrf9160_1.3.5
[1;32mmosh:~$ [m[8D[JDevice ID:             nrf-351516172719049
[1;32mmosh:~$ [m[8D[JOperator full name:   ""
[1;32mmosh:~$ [m[8D[JOperator short name:  ""
[1;32mmosh:~$ [m[8D[JOperator PLMN:        "4
[16:53:09.096]收←◆6000"
[1;32mmosh:~$ [m[8D[JCurrent cell id:       47393341 (0x02D32A3D)
[1;32mmosh:~$ [m[8D[JCurrent phy cell id:   11
[1;32mmosh:~$ [m[8D[JCurrent band:          8
[1;32mmosh:~$ [m[8D[JCurrent TAC:           7467 (0x1D2B)
[1;32mmosh:~$ [m[8D[JCurrent rsrp:          58: -82dBm
[16:53:09.134]收←◆
[1;32mmosh:~$ [m[8D[JCurrent snr:           38: 14dB
[1;32mmosh:~$ [m[8D[JMobile network time and date: 25/06/11,08:53:06+32
[1;32mmosh:~$ [m[8D[JPDP context info 1:
[1;32mmosh:~$ [m[8D[J  CID:                0
[1;32mmosh:~$ [m[8D[J  PDN ID:             0
[1;32mmosh:~$ [m[8D[J  PDP context active: yes
[1;32mmosh:~$ [m[8D[J  PDP type:           IP
[16:53:09.172]收←◆
[1;32mmosh:~$ [m[8D[J  APN:                CMNBIOT
[1;32mmosh:~$ [m[8D[J  IPv4 address:       100.11.3.52
[1;32mmosh:~$ [m[8D[J  IPv6 address:       ::
[1;32mmosh:~$ [m[8D[J  IPv4 DNS address:   120.196.165.7, 221.179.38.7
[1;32mmosh:~$ [m[8D[J  IPv6 DNS address:   ::, ::
[1;32mmosh:~$ [m
[16:53:14.258]发→◇sms reg
[16:53:14.276]收←◆sms reg //enable SMS
SMS registered
[1;32mmosh:~$ [m
[16:53:27.925]收←◆[8D[JRRC mode: Idle
[1;32mmosh:~$ [m
[16:54:12.346]发→◇link edrx -e --ltem_edrx 1001 --nbiot_edrx 1001
[16:54:12.371]收←◆link edrx -e --ltem_edrx 1001 --nbiot_edrx 1001 //enable eDRX
eDRX enabled
[1;32mmosh:~$ [m
[16:54:12.670]收←◆[8D[JRRC mode: Connected
[1;32mmosh:~$ [m
[16:54:12.849]收←◆[8D[JeDRX parameter update: eDRX: 163.839996, PTW: 10.240000

[1;32mmosh:~$ [m[8D[JRRC mode: Idle //1st SMS sent during RRC idle @16:55:06+32
[1;32mmosh:~$ [m
[16:54:20.602]发→◇at AT%XMONITOR
[16:54:20.621]收←◆at AT%XMONITOR
%XMONITOR: 1,"","","46000","1D2B",9,8,"02D32A3D",11,3682,61,38,"1001","11100000","11100000","00111110" //check eDRX
OK

[1;32mmosh:~$ [m
[16:56:44.354]收←◆[8D[JRRC mode: Connected
[1;32mmosh:~$ [m
[16:57:05.481]收←◆[8D[JRRC mode: Idle //2nd SMS sent during RRC idle @16:57:51+32
[1;32mmosh:~$ [m
[16:59:28.198]收←◆[8D[JRRC mode: Connected
[1;32mmosh:~$ [m
[16:59:49.326]收←◆[8D[JRRC mode: Idle //3rd SMS sent during RRC idle @17:00:20+32
[1;32mmosh:~$ [m
[17:02:12.042]收←◆[8D[JRRC mode: Connected  //4th SMS sent during RRC connected @17:02:22+32
[1;32mmosh:~$ [m
[17:02:24.970]收←◆[8D[JTime:   25-06-11 17:02:22+32
[1;32mmosh:~$ [m[8D[JText:   'eDRXTesting,RRCconnected,4'
[1;32mmosh:~$ [m[8D[JLength: 26
[1;32mmosh:~$ [m
[17:02:26.290]收←◆[8D[JTime:   25-06-11 16:55:06+32
[1;32mmosh:~$ [m[8D[JText:   'eDRXTesting,RRCidle,1'
[1;32mmosh:~$ [m[8D[JLength: 21
[1;32mmosh:~$ [m
[17:02:27.479]收←◆[8D[JTime:   25-06-11 16:57:51+32
[1;32mmosh:~$ [m[8D[JText:   'eDRXTesting,RRCidle,2'
[1;32mmosh:~$ [m[8D[JLength: 21
[1;32mmosh:~$ [m
[17:02:29.434]收←◆[8D[JTime:   25-06-11 17:00:20+32
[1;32mmosh:~$ [m[8D[JText:   'eDRXTesting,RRCidle,3'
[1;32mmosh:~$ [m[8D[JLength: 21
[1;32mmosh:~$ [m
[17:02:51.229]收←◆[8D[JRRC mode: Idle
[1;32mmosh:~$ [m

RE: ncs v3.0.0 nRF9160 SMS PSM eDRX

Luke Long — Tue, 10 Jun 2025 11:55:02 GMT

Hi, here came some more information

1, Tested at NCS 2.7. For both mdmfw 1.2.5 and mdmfw 1.3.5, it shows same results.

2, Similarly, while no edrx/ no psm, if SMS was sent druing cfun=0, we still could not receive SMS druing cfun=1. However, if we sent one more SMS druing cfun=1, then we can receive all previously missed SMSs. Please refer to below