Patent ID: 11930469
Assignee: QUALCOMM INCORPORATED
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A user equipment (UE) in a wireless communication system, comprising one or more processors coupled to memory and configured to:
receive, from a base station, a timing advance (TA) indication for the UE, wherein the TA indication indicates a selection of one of a fixed TA value or a TA value range to be used by the UE while operating in a full-duplex (FD) mode; and
transmit one or more uplink signals to the base station at a timing advance based on the fixed TA value or the TA value range,
wherein an applied TA value to be applied by the UE is configured to be in a range of TA values based on the fixed TA value and a time duration of a cyclic prefix (CP) value used in the wireless communication system, and
wherein the one or more processors are configured to:
determine the applied TA value based on the fixed TA value and the time duration of the CP value according to a first relationship: the fixed TA value−CP≤the applied TA value≤the fixed TA value; or
determine the applied TA value based on the fixed TA value, the time duration of the CP value, and a delay (d1) according to a second relationship: the fixed TA value−CP−d1≤the applied TA value≤the fixed TA value−d1, wherein d1 is a self-interference propagation delay associated with a downlink beam and an uplink beam; or
determine the applied TA value based on the fixed TA value, the time duration of the CP value, and a delay spread (DS) of a downlink propagation delay time according to a third relationship: the fixed TA value−CP+DS≤the applied TA value≤the fixed TA value; or
determine the applied TA value based on the fixed TA value, the time duration of the CP value, and the delay spread DS of the downlink delay time according to a fourth relationship: the fixed TA value−CP−d1+DS≤the applied TA value≤the fixed TA value−d1, wherein d1 is the self-interference propagation delay associated with the downlink beam and the uplink beam.