Patent ID: 11889448
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: nan (nan)
Classification: CPC nan | IPC H

Claim 0:
1. 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 of the cellular communications system;
determining that none of a predefined set of TA validation mechanisms are configured, wherein:
each TA validation mechanism comprises a TA validation functionality of the wireless device that corresponds to one or more configuration parameters within an information element (IE) transmitted to the wireless device and operates according to the one or more configuration parameters; and
determining that none of the predefined set of TA validation mechanisms are configured comprises determining, for each TA validation mechanism of the predefined set of TA validation mechanism, that the one or more configuration parameters are absent from the IE or indicate that the TA validation mechanism is not to be performed by the wireless device; and

responsive to determining that none of the predefined set of TA validation mechanisms are configured, determining that the TA is valid for an entirety of the cell.