Method and device for cell (re)selection in EMB-based non-terrestrial network

A user equipment (UE) comprising:

• a processor;
• and
• a memory storing one or more instructions executable by the processor,
• wherein the one or more instructions are executed to perform:
• receiving configuration information of a cell service timer of a serving cell from a satellite, the cell service timer indicating a time during which communication services of the serving cell can be provided;
• comparing a value of the cell service timer of the serving cell with a first value;
• in response that the value of the cell service timer of the serving cell is less than or equal to the first value, obtaining configuration information of a cell service timer of each of at least one neighboring cell;
• configuring a candidate cell set which is a set of one or more neighboring cells among the at least one neighboring cell, the one or more neighboring cells having a value of a cell service timer greater than a sum of the value of the cell service timer of the serving cell and a second value;
• selecting a candidate cell from among the one or more neighboring cells based on a value of a satellite (SAT) service timer of each of the one or more neighboring cells belonging to the candidate cell set;
• and
• performing a connection establishment procedure with the candidate cell,
• wherein the value of the SAT service timer indicates a time during which communication services can be provided in coverage of a satellite associated with each of the one or more neighboring cells, and
• in response that the value of the cell service timer of the serving cell exceeds the first value, the UE does not receive the configuration information of the cell service timer of each of at least one neighboring cell.