MC7430 - UE-Initiated Dedicated Bearer Request

Hi everyone,

Is the MC7430 capable of requesting a dedicated bearer? Where can I see the QoS capabilities of this modem?

I’ve found some topics on the forum regarding this subject, but it is not clear to me if the modem can send a Dedicated Bearer Request, and if this can be triggered with AT commands:




I have access to a private LTE network, in the LTE network traces I see no bearer request messages while sending a few combinations of the following AT commands:
AT+CGEQMIN=1,0,64,64,3,3,0,1500,“1E4”,“1E5”,0,10,1
AT+CGEQREQ=1,0,64,64,4,4,0,1500,“1E4”,“1E5”,0,10,1
AT+CGACT=1,1

Is there a way to check what messages the MC7430 is sending to the network?

I got these AT commands from 3GPP TS 27.007 V15.3.0 (2018-09), but based on the 3GPP documentation I’ve read so far it’s not clear to me if this is supposed or sufficient to trigger a UE-Initiated Dedicated Bearer Request message.

Many Thanks
BR

I used to test QoS but these were all NTWK initiated test cases. For QoS you have to have the right subscription with dedicated bearer support.
First I’d check with your carrier, the main North American carriers I was dealing with do not support UE initiated dedicated bearers.

With SLQS SDK you can monitor the dedicated bearer establishment with callback “SetSLQSSetQosNWStatusCallback”

Here is an example (Callbox)

root@Lenovo-G510:/home/sierra/SDK/SLQS/SLQS04.00.02/pkgs/qa# ./qatesthostx86_64 -p …/…/build/bin/hostx86_64/slqssdk -n t174,t182,t204,t206 -r

Using …/…/build/bin/hostx86_64/slqssdk

#devices: 1
deviceNode: /dev/qcqmi0
deviceKey: 35922505002266

Using SLQS SDK version: SLQS04.00.02

Invoking test: SetSLQSSetQosNWStatusCallback
SLQSSetQosNWStatusCallback : Enabled callback
Invoking test: SLQSSetQosFirstInstEventCallback
iSLQSSetQosEventCallback: callback enabled
Invoking test: SetSLQSSetQosStatusCallback
doSetSLQSSetQosStatusCallback : Enabled callback
Invoking test: SetSLQSSetQosPriEventCallback
doSetSLQSSetQosPriEventCallback : Enabled callback

Completed t174,t182,t204,t206…

Enter the testid/testsequence to be executed t33
Invoking test: SLQSStartStopDataSession_startv4p1

Please enter InstanceID value ( 1 to 8) or press to go to proceed with authentication pref
Option: 1

InstanceID is = 1

Parameter Set:
Action :START
Technology :3GPP
profID3GPP :3
profID3GPP2 :

Please select one of the following options or press to go to main menu:

  1. To enter PAP authentication preference
  2. To enter CHAP authentication
  3. To proceed with-out authentication preference
    Option: 3
    Return Code: 0 (0x0)
    Return Reason: Success

Completed t33…

Enter the testid/testsequence to be executed
cbkTestdoSLQSSetQosEventCB: QMI 0
id 1138065504, isNew 1, event 1
Bearer ID : 8
tx flow index 0
qci 5
rx flow index 0
qci 5
tx filter index 0 ver 4
nxt hdr proto 0x11
precedence 0x1
id 0x100
UDP Dest Port 5001
UDP Dest port range 8
rx filter index 0 ver 4
nxt hdr proto 0x11
precedence 0x1
id 0x100
UDP Source Port 5001
UDP Source port range 8

cbkTestdoSLQSSetQosEventCB: QMI 0
id 1137991960, isNew 1, event 1
Bearer ID : 7
tx flow index 0
max 488000
guaranteedRate 400000
qci 1
rx flow index 0
max 488000
guaranteedRate 400000
qci 1
tx filter index 0 ver 4
nxt hdr proto 0x11
precedence 0x0
id 0x1
UDP Dest Port 5100
UDP Dest port range 9
rx filter index 0 ver 4
nxt hdr proto 0x11
precedence 0x0
id 0x1
UDP Source Port 5100
UDP Source port range 9