Patent ID: 11930467
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A method performed by a wireless device of a cellular communications system to determine timing advance, TA, validity, the method comprising:
obtaining a TA for a cell;
receiving one or more configurations of a corresponding one or more TA validation mechanisms, wherein:
each configuration comprises one or more configuration parameters within an information element (IE) transmitted to the wireless device; and
each TA validation mechanism comprises a TA validation functionality of the wireless device that operates according to a corresponding configuration;

receiving a first timer;
determining that the first timer is set to infinity;
responsive to determining that the first timer is set to infinity:
determining that the TA is valid for an entirety of the cell; and
responsive to determining that the TA is valid for the entirety of the cell, disabling the one or more TA validation mechanisms;

receiving a second timer;
determining that the second timer is not set to infinity; and
responsive to determining that the second timer is not set to infinity, interpreting the second timer as an indication of how long the TA is considered valid.