Enhancements for operation of a timer
US8903376B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2009 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | May 20, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and an apparatus for operating a timer in a wireless transmit receive unit (WTRU) are described. In one scenario, the method includes the WTRU receiving a circuit switched (CS) call request and a CS service notification, transmitting an evolved packet system mobility management service request (ESR) message, starting the timer, and stopping the timer upon reception of a handover command or a cell change command to indicate a successful CS fallback procedure. In another scenario, the method includes the WTRU receiving a CS call request and a CS service notification, transmitting an ESR message including a CS call rejection indication, starting the timer, and stopping the timer upon reception of an acknowledgement that the ESR message was transmitted or received to indicate a successful CS fallback procedure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.