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.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Information | ||||||
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| 5G,4G,3G | 31/12/2019 | ISLD-201912-087 | INTERDIGITAL INC | Yes | Family Member | ||||
Specification Information
Specification Information
Technologies
Family Information
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Mobility and handover
Product
User Equipment (UE/Terminal)
Use Cases
Wireless communication
Services
Mobility Management
Claim
1. 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.
2. The WTRU of claim 1, further comprising a transmitter configured to transmit an extended service request (ESR) for an MO CSFB emergency call during the period that corresponds to the timer value.
3. The WTRU of claim 1, further comprising a transmitter configured to transmit an ESR for MO CSFB, wherein the message that includes the timer value is a service reject message received in response to the ESR.
4. The WTRU of claim 3, wherein the service reject message includes an evolved packet system mobility management (EMM) cause value that indicates that CS service is temporarily unavailable.
5. The WTRU of claim 1, wherein the timer value is a value for timer T3442.
6. The WTRU of claim 1, further comprising an antenna, operatively connected to the receiver, configured to receive radio frequency (RF) signals.
7. 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.
8. The method of claim 7, further comprising receiving and accepting an ESR for MO CSFB for an emergency call during the period corresponding to the timer value.
9. The method of claim 7, wherein the generating the service reject message further comprises including an evolved packet system mobility management (EMM) cause value in the service reject message that indicates that CS service is temporarily unavailable.
10. The method of claim 7, wherein the timer value is included in a T3442 timer value information element (IE).
11. 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.
12. The wireless network of claim 11, wherein the service reject message includes an evolved packet system mobility management (EMM) cause value that indicates that CS service is temporarily unavailable.
13. The wireless network of claim 11, wherein the timer value is a value for timer T3442.
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.