BG96 PSM treshold

IoT Modules LPWA Module
1

Hello.

I’m working with BG96.

AT+CPSMS=1,“10001000”,“00100010”

I set 4 minutes for T3412 timer and 2 minutes for T3324.
Everything works perfect but, a would like to set some kind of additional timer. For example if BG96 is not on PSM mode and if there is no AT command from uC, modem should go to PSM mode after 20 seconds.
If is this possible?

Is it the treshold parameter response for that kind of action AT+QPSMCFG ??

2

Hello Rab,

yes we can. but i think not AT+QPSMCFG command.
AT+QNWCFG=“activetimer” command can set a timer when no AT command from UART, the modem will be enter PSM instend of waiting T3324 expired.

BR
Linkin WANG

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3

Please help check this command if support on your device fw version.
And also, AT+QCFG=“psm/enter” command maybe help you as well, for more details please check AN document.

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4

Linkin-Q look here please:

Quectel
BG96
Revision: BG96MAR02A07M1G
OK

AT+QNWCFG=“activetimer”,1,6000
ERROR

Why I have error?

5

Hi

BG96 currently not support this command.

B R
Linkin WANG

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6

So how to solve this problem on BG96 modem?
Is it possible?

7

No, You can set T3324 to control time to enter PSM, or AT+QCFG=“psm/enter” to make UE enter PSM once RRC released.

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8

Linkin-Q thanks a lot for your help

9

Linkin-Q

Let’s assume that T3412=30 minutes and T3324=2 minutes.

Situation:

  1. Modem sent info that: PSM POWER DOWN
  2. After 10 minutes I woke up modem with POWER KEY.
  3. I connect with MQTT broker, send data and disconnect. This operation takes max 1 minute.
  4. Now I would like to enter PSM again immediately, I do not want to waiting additional 20 minutes.
    How to force entering to PSM mode?
10

Hi Rab,

AT+QCFG=“psm/enter” commond can let UE enter PSM immediately once RRC released. the time
from CONNECT to IDLE(RRC release) depend on NWS(network station), about 10-20s i think.

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