Non-terrestrial networks

A method performed by a base station in a non-terrestrial network (NTN), the method comprising:

• transmitting, to a user equipment (UE) via a satellite, first information associated with a first timing advance (TA) common for a cell;
• performing, based on the first TA and a second TA, uplink reception from the UE;
• and
• transmitting, to the UE via the satellite, second information on a threshold for a channel quality indicator (CQI) report disabling mechanism,
• wherein whether the COI report is disabled or not is determined based on a comparison between the threshold and a measured propagation delay between the UE and the satellite, and
• wherein the second TA is determined based on a position of the UE.

A user equipment (UE) in a non-terrestrial network (NTN), the UE comprising:

• a transceiver;
• and
• a processor configured to:
• receive, from a base station via a satellite, first information associated with a first timing advance (TA) common for a cell,
• determine a second TA based on a position of the UE,
• perform, based on the first TA and the second TA, uplink transmission to the base station,
• receive, from the base station via the satellite, second information on a threshold for a channel quality indicator (CQI) report disabling mechanism, and
• determine whether the COI report is disabled or not based on a comparison between the threshold and a measured propagation delay between the UE and the satellite.

A base station in a non-terrestrial network (NTN), the base station comprising:

• a transceiver;
• and
• a processor configured to:
• transmit, to a user equipment (UE) via a satellite, first information associated with a first timing advance (TA) common for a cell,
• perform, based on the first TA and a second TA, uplink reception from the UE, and
• transmit, to the UE via the satellite, second information on a threshold for a channel quality indicator (CQI) report disabling mechanism,
• wherein whether the COI report is disabled or not is determined based on a comparison between the threshold and a measured propagation delay between the UE and the satellite, and
• wherein the second TA is determined based on a position of the UE.