Method and apparatus for canceling a circuit switched fallback
AssigneeInterDigital Patent Holdings, Inc.
InventorsMahmoud Watfa, Ulises Olvera-Hernandez, Behrouz Aghili, Shankar Somasundaram
Life of this patent
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Abstract
A method and apparatus may be used to cancel a communication session. The apparatus may transmit a message that indicates a request to cancel the communication session. The apparatus may continue a Packet Switched (PS) session without performing an intersystem change. If the apparatus receives an intersystem change command, the apparatus may transmit a message to reject the intersystem change command, or it may ignore the intersystem change command.
Claims15
A method for use in a wireless transmit/receive unit (WTRU), the method comprising:
- transmitting a first message to initiate a Circuit Switched (CS) Fallback (CSFB) procedure;
- receiving an indication that the CSFB procedure is canceled;
- and
- stopping a timer in response to receiving the indication that the CSFB procedure is canceled.
A wireless transmit/receive unit (WTRU) comprising:
- a transmitter configured to transmit a first message to initiate a Circuit Switched (CS) Fallback (CSFB) procedure;
- a receiver configured to receive an indication that the CSFB procedure is canceled;
- and
- a processor configured to stop a timer in response to the received indication that the CSFB procedure is canceled.
Dependencies are inferred from the claim text.