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

Claim 21:
22. A base station in a wireless communication system, comprising one or more processors coupled to memory and configured to:
determine a user equipment (UE) in the wireless communication system is operating in a full-duplex (FD) mode with the base station; and
send 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 the FD mode, and
wherein an applied TA value to be applied at 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 fourth 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.