eMBMS in libqmi

Ginzler, Tobias tobias.ginzler at fkie.fraunhofer.de
Mon Jan 15 10:12:48 UTC 2018


Currently I am trying to test eMBMS. We luckily have an eMBMS test cell in our LTE lab setup. I have a modem (EM7430) which I think supports eMBMS through its Qualcomm modem. The supported commands are 


according to some posts in the SW source forums.

I searched through the libqmi code and I found eMBMS-related code only in gobi-api/GobiAPI_2012-07-12-1036/Core/QMIEnum.h. The Gobi code seems to realize a bridge from libqmi to the proprietary kernel module from Sierra, if I see that correctly.  But beside the defines in QMIEnum.h there is no code related to eMBMS. From the Introduction to libqmi at sigquit, I understood that libqmi is only a thin layer preparing, multiplexing and forwarding qmi commands to the modem. So I suppose I have to know the QMI commands to setup an eMBMS reception and then use libqmi to send them to the modem. I do not have the documentation of the eMBMS QMI commands, though. At this moment I am a bit stuck and do not know if there is a possibility to test eMBMS with the EM3740. Can you give me some idea how to get eMBMS tested with the help of libqmi? Any advice is welcome.


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