Method and apparatus for transmitting extended service request messages in a congested network
AssigneeInterDigital Patent Holdings, Inc.
InventorsMahmoud Watfa, Behrouz Aghili, Ulises Olvera-Hernandez
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Abstract
Methods and apparatus for transmitting extended service request messages in a congested network are described. An apparatus includes a timer, a receiver and a processor. The receiver receives a message that includes a timer value. The processor sets the timer based on the timer value, activates the timer, and attempts mobile-originated circuit switched fallback for an emergency call during a period that corresponds to the timer value and during which mobile-originated circuit switched fallback is otherwise prohibited.
Claims13
A wireless transmit/receive unit (WTRU) comprising:
- a timer;
- a receiver configured to receive a message that includes a timer value;
- and
- a processor configured to:
- set the timer based on the timer value,
- activate the timer, and
- attempt mobile-originated (MO) circuit switched fallback (CSFB) for an emergency call during a period that corresponds to the timer value and during which MO CSFB is otherwise prohibited.
A method, performed in a mobility management entity (MME), the method comprising:
- receiving an extended service request (ESR) for mobile-originated (MO) circuit switched fallback (CSFB) via a wireless network;
- generating a service reject message that includes a timer value for setting a timer in a wireless transmit/receive unit (WTRU), wherein the timer value corresponds to a period during which MO CSFB, except for MO CSFB for emergency calls, is prohibited;
- and
- sending the service reject message.
A wireless network comprising:
- a wireless transmit receive unit (WTRU) configured to generate and transmit an extended service request (ESR) for mobile-originated (MO) circuit switched fallback (CSFB) via a wireless network;
- and
- a mobility management entity configured to generate and send a service reject message that includes a timer value for setting a timer in the WTRU, wherein the timer value corresponds to a period during which MO CSFB, except for MO CSFB for emergency calls, is prohibited,
- wherein the WTRU is further configured to generate and transmit an ESR for an MO CSFB emergency call during the period during which MO CSFB, except for MO CSFB for emergency calls, is prohibited.
Dependencies are inferred from the claim text.