Associated device discovery in IMS networks

A mobile device configured to act as a switch in a session with a cellular network comprising:

• a transceiver to communicate with the cellular network;
• and
• logic stored in a non-transitory computer readable medium configured to sense one or more devices with the mobile device;
• create the PAN for the one or more devices using a local network;
• create a cellular network session;
• use both the local network and the cellular network session, to provide a gateway between the cellular network and the one or more devices in the PAN;
• and
• control the PAN,
• invite a media server (MS) or an Application server (AS) into the cellular network session,
• wherein, during the cellular network session, and the one or more devices access the cellular network through the mobile device while the mobile device simultaneously
• maintains a voice call over a circuit switched network with which the mobile device communicates without use of any of the one or more devices as an intervening device.