Patent ID: 6606498
Filing Date: 2003-08-12
Classification: H04M,H04W

Abstract:
A wireless device comprising a processor and program code to implement a finite state machine with a plurality of states and to effect transitions between the states, the finite state machine comprising:a null state for acting upon registration, call origination, and incoming call detection events; a slot seizing state for acting upon establishment of a traffic channel, the finite state machine transitioning from the null state to the slot seizing state on any one of the registration, call origination, or incoming call detection events to effect establishment of the traffic channel; a radio call identifier pending state for awaiting upon a radio call identifier, the finite state machine transitioning from the slot seizing state to the radio call identifier pending state upon establishment of the traffic channel and any one of a non-emergency call origination event or the incoming call detection event; a terminal registration pending state for awaiting registration of the wireless device, the finite state machine transitioning from the slot seizing state to the terminal registration pending state upon establishment of the traffic channel and the registration event; and an emergency call request state for requesting emergency call services, the finite state machine transitioning from the slot seizing state to the emergency call request state upon establishment of the traffic channel and an emergency call origination event; wherein when in the slot seizing state and upon expiration of a first timer, the finite state machine starts a second timer and then transitions to the null state, and when in the null state and upon expiration of the second timer, the finite state machine continues attempting registration until successful.