User equipment and method for timing alignment
A method and a user equipment (UE) for performing timing alignment is provided. The method includes receiving, from a Base Station (BS), a Timing Advance (TA) report configuration in System Information (SI); and transmitting, to the BS, a TA report based on the TA report configuration. The TA report configuration includes an indication for enabling or disabling the UE to transmit the TA report.
1. A method performed by a User Equipment (UE) for timing alignment, the method comprising:
receiving, from a Base Station (BS), a Timing Advance (TA) report configuration via System Information (SI); and
transmitting, to the BS, a TA report based on the TA report configuration,
wherein:
the TA report configuration includes an indication for enabling or disabling the UE to transmit the TA report, and
the TA report comprises a least integer number of slots that is determined by applying a ceiling function to a TA value, such that the least integer number of slots is greater than or equal to the TA value.
2. The method of claim 1 , wherein the TA value corresponds to a UE-specific TA, and is calculated based on at least one of Global Navigation Satellite System (GNSS) position information, a common TA, and satellite ephemeris information.
3. The method of claim 1 , wherein the indication is provided by a Non-Terrestrial Network (NTN)-dedicated System Information Block (SIB).
4. A User Equipment (UE) for performing timing alignment in a wireless communication system, the UE comprising:
at least one processor; and
at least one non-transitory computer-readable medium coupled to the at least one processor and storing one or more computer-executable instructions that, when executed by the at least one processor, cause the UE to:
receive, from a Base Station (BS), a Timing Advance (TA) report configuration via System Information (SI); and
transmit, to the BS, a TA report based on the TA report configuration,
wherein:
the TA report configuration includes an indication for enabling or disabling the UE to transmit the TA report, and
the TA report comprises a least integer number of slots that is determined by applying a ceiling function to a TA value, such that the least integer number of slots is greater than or equal to the TA value.
5. The UE of claim 4 , wherein the TA value corresponds to a UE-specific TA, and is calculated based on at least one of Global Navigation Satellite System (GNSS) position information, a common TA, and satellite ephemeris information.
6. The UE of claim 4 , wherein the indication is provided by a Non-Terrestrial Network (NTN)-dedicated System Information Block (SIB).