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

Claim 15:
16. A wireless device of a cellular communications system enabled to determine timing advance, TA, validity, the wireless device comprising processing circuitry coupled to a memory, the processing circuitry configured to:
obtain a TA for a cell;
receive 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;

receive a first timer;
determine that the first timer is set to infinity;
responsive to determining that the first timer is set to infinity:
determine 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, disable the one or more TA validation mechanisms;

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