Patent ID: 8630637

Claim:
A mobile device roaming system, comprising: a detection component for detecting switchover of wireless voice communications from an access point of a controller to a different access point of a different controller, the controller and the different controller are part of a wireless packet communications infrastructure, the controller authenticates with a first authentication key and the different controller authenticates with a second authentication key; a signal strength component for detecting a low signal strength threshold of the access point of the controller; a pre-authentication component that performs a pre-authentication process with the different controller while attached to the controller to avoid authentication delay; a notification component for notifying a device application that failure of the voice communications is imminent; a connection component for switching the wireless voice communications back to the access point of the controller based on failure of the wireless voice communications to occur via the different controller, the failure is due to the first authentication key associated with the controller not validating on the different controller; a voice quality component for maintaining voice communications quality based on a packet interval limited to a maximum value, and facilitates switchback to the access point of the controller by the connection component in response to detection of an irregular packet arrival interval; and a microprocessor that executes computer-executable instructions stored in memory.