Patent ID: 8249593
Filing Date: 2012-08-21
Classification: H04L,H04W

Abstract:
1. A portable communication device for use with multiple wireless networks, the portable communications device comprising: a processor; a memory in communication with the processor, the memory containing instructions; a mobile wireless communication transceiver in communication with the processor; and a fixed wireless transceiver in communication with the processor, wherein the instructions in the memory include determining a presence of available wireless networks by sending a registration message to a presence server over a plurality of available wireless networks and receiving a confirmation from the presence server, the plurality of available wireless networks including one or more of a mobile wireless network and a fixed wireless network, the confirmation notifying the portable communication device of registration with the presence server over one or more of the mobile wireless network and the fixed wireless network, wherein the presence server maintains current information regarding whether registration over the available wireless networks remains valid such that an incoming message is received by the portable communication device over one of the mobile wireless network and the fixed wireless network according to the instructions and the presence of the available wireless networks, and wherein the instructions further include transmitting a heartbeat signal to the presence server, the heartbeat signal including measured performance criteria between the mobile wireless communication transceiver and the mobile wireless network, and between the fixed wireless transceiver and the fixed wireless network.