Determining connection states of a mobile wireless device

A mobile wireless device comprising:

• one or more processors configured to control establishing and releasing connections between the mobile wireless device and a first wireless network and between the mobile wireless device and a second wireless network;
• and
• wireless circuitry configured to transmit signals to the first wireless network according to a first wireless communication protocol and to the second wireless network according to a second wireless communication protocol and to receive signals from the first and second wireless networks;
• wherein the one or more processors are further configured to:
• establish a connection to the first wireless network;
• configure the wireless circuitry to communicate with the second wireless network;
• configure the wireless circuitry back to communicate with the first wireless network;
• detect a time period, during which the wireless circuitry is configured for communication with the second wireless network and not configured for communication with the first wireless network, that exceeds an inactivity threshold;
• transmit at least one scheduling request message to the first wireless network;
• execute at least one random access procedure to access the first wireless network when receiving no response to the at least one scheduling request message from the first wireless network;
• and
• executing a radio link failure procedure when receiving no response to the at least one random access procedure from the first wireless network.

A computer program product encoded as computer program code in a non-transitory computer readable medium for determining connections states by a mobile wireless device in communication with a wireless network, the computer program product comprising:

• computer program code for detecting an interruption of a connection between the mobile wireless device and the wireless network;
• computer program code for transmitting an uplink resource allocation message to the wireless network;
• computer program code for transmitting a random access message to the wireless network when receiving no response from the wireless network to the uplink resource allocation message;
• and
• computer program code for executing a radio link failure procedure when receiving no response from the wireless network to the random access message.