Trying to decode MIB and SIB about qcsuper HOT 2 OPEN

Hello,

Thank you for your feedback.

Which radio channels your phone listens to (BCCH which will contains the SIBs, CCCH/DCCH which will serve to exchange signalling) is decided by your baseband, and depends of the information that it needs to obtain at a given point of time (depending on its internal state machine).

I think that your baseband should typically listen to BCCH:

• At regular intervals
• When you handover antennas
• When changing the RAT (Radio Access Technology) between 2G/3G/4G, automatically or manually
• When your PIN has not been entered yet (or there is no SIM card)

Generally, RRC is meant to be a short-lived protocol.

Mobile USB dongles generally expose a serial port with a protocol called QMI, in addition to Diag and AT, which allows to perform actions on the dongle such as changing the RAT. On Linux, you have a tool called qmi-cli (maintained by ModemManager developers) which allows to change the RAT through the command line.

On Android phones, QMI is generally exposed through a device present in /dev. However I'm not sure about how to interact with it.

You may try for example manually enabling/disabling the mobile network or data, then trying to see whether you can easily automate such actions on your device. You may find a way to do this though the ADB command line, using settings or intents.

Feel free to ask if you have other questions.

Regards,

from qcsuper.

Hello, what QCSuper version have you used to capture above "wireshark" content?
I have done following capture with QCsuper and used wireshark in Windows to display packets,.....but I cannot see any "LTE RRC DL-DCCH" meassages (i.e. RRCConnectionRecongiguration) in my trace.

from qcsuper.