Patent ID: 8467798

Claim:
A method of performing cell selection in a wireless communication system, the method performed by the user equipment (UE) and comprising: receiving load information indicating cell load values for a serving cell and at least one neighbor cell; selecting a measurement cell group based on a signal level of the serving cell and priorities of the serving cell and the at least one neighbor cell; measuring a signal quality value of the serving cell and the selected measurement cell group; selecting a candidate target cell group from the selected measurement cell group at least one neighbor cell based on the measured signal quality value; selecting a selected one of the at least one neighbor cell from the selected candidate target cell group as a target cell based on the received load information; and performing cell selection of the target cell, wherein: a signal quality value of each candidate target cell in the candidate target cell group is greater than a signal quality value of the serving cell during a first time period; and the one of the at least one neighbor cell is selected as the target cell when a cell load value of the selected one of the at least one neighbor cell is less than cell load values of other neighbor cells in the candidate target cell group and the cell load value of the selected one of the at least one neighbor cell is less than the cell load value of the serving cell during a second time period.