Phone is running Cyanogenmod 11 M9, but the issue has persisted since I had M6 installed. Disconnection occurs once every few hours, and to resolve the issue I simply enable airplane mode and disable data, then immediately enable data and disable airplane mode. In my testing, both are required to reset the connection. This issue kicks me completely off the network, disabling mobile data and GSM/voice connection.
I have prepended ** on a couple of lines on the log where the issue seems to begin; anyone have any input as to possible causes/solutions?