Patent ID: 11889446
Assignee: SHARP KABUSHIKI KAISHA
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. A method performed by a user equipment comprising:
receiving a random access response, the random access response including a timing advance command indicating an index value TA in a form of a timing advance command field of 12 bits, the timing advance command corresponding to a Timing Advanced Group (TAG), the TAG being one of multiple TAGs;
adjusting, based on a timing advance value NTA, uplink transmission timing for the TAG with a subcarrier spacing (SCS), the timing advance value NTA being determined based on (i) the index value TA and (ii) SCS configuration μ of the SCS; and
determining a value N with respect to a minimum SCS among SCSs of all configured uplink bandwidth parts (UL BWPs) for all uplink carriers in the TAG and for all configured initial UL BWPs each provided by a higher-layer parameter initialuplinkBWP, wherein
the value N is a maximum timing advance value in milliseconds that is providable by the timing advance command field of 12 bits, and
the adjustment to the uplink transmission timing is applied from a starting point of an uplink slot, the uplink slot being based on (a) an uplink slot in which the timing advance command is received and (b) the value N.