Configuration of measurement gap

A device configured to operate in a wireless system, the device comprising:

• a transceiver,
• a processor operably connectable to the transceiver,
• wherein the processer is configured to:
• establish a dual connectivity (DC) with both a primary cell (PCell) and a primary secondary cell (PSCell);
• determine i) a first propagation delay of a first non-terrestrial network (NTN) satellite for the PSCell, ii) a second propagation delay of a second NTN satellite for a target cell and iii) a third propagation delay of a third NTN satellite for the PCell;
• transmit, to PCell, a timing offset for the PSCell based on i) the first propagation delay, ii) the second propagation delay and iii) the third propagation delay;
• receive, from the PCell, a first MG (measurement gap) for the PCell and a second MG for the PSCell,
• wherein the second MG configuration is based on the timing offset;
• perform measurement for the PCell in the first MG;
• and
• perform measurement for the PSCell in the second MG.

A method for serving a primary cell (PCell) for a user equipment (UE), performed by a base station, comprising:

• establishing a dual connectivity (DC) for the UE between the PCell and a primary secondary cell (PSCell);
• receiving, from the UE, i) a first propagation delay of a first non-terrestrial network (NTN) satellite for the PSCell, ii) a second propagation delay of a second NTN satellite for a target cell and iii) a third propagation delay of a third NTN satellite for the PCell;
• determining a first MG (measurement gap) for the PCell and a second MG for the PSCell, based on i) the first propagation delay, ii) the second propagation delay and iii) the third propagation delay;
• and
• transmitting, to the UE, the first MG and the second MG.