METHODS TO CONTROL NON-ACCESS STRATUM (NAS) TIMERS AT OR AFTER DISCONTINUOUS COVERAGE AND DECLARE STATE OF USER EQUIPMENT AT AND AFTER END OF DISCONTINUOUS COVERAGE
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United States of America
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Issued Date -
Dec 19, 2024
app pub date -
Jun 12, 2024
filing date -
Jun 12, 2024
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Abstract
A method to control non-access stratum (NAS) timers at or after discontinuous coverage includes the following steps. An unavailability period is activated due to discontinuous coverage. All the NAS timers are stopped except for exceptional timers. Associated procedures are aborted. A method to declare the state of user equipment (UE) at and after the end of discontinuous coverage includes the following steps. The UE returns in coverage of a tracking area (TA) in a current registration after being out of coverage due to the discontinuous coverage. The UE runs or starts a discontinuous coverage maximum time offset timer. The UE enters a specific xMM state. The UE performs an xMM procedure upon expiry of the discontinuous coverage maximum time offset timer. The specific xMM state includes an xMM-REGISTERED.ATTEMPTING-REGISTRATION-UPDATE state.
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