Method of determining an access mode of cell in a wireless communication system

A method of determining an access mode of a cell in a wireless communication system, the method comprising:

• providing a cell type indicator and a subscriber group identity to user equipment (UE) in order to determine the access mode of the cell by the UE, wherein the cell type indicator is used to indicate a first access mode of the cell, wherein the first access mode of the cell only allows one or more UEs in a particular subscriber group to be accessed, wherein an existence of the subscriber group identity is checked by the UE if the access mode of the cell is not the first access mode by the cell type indicator, wherein the access mode of the cell is considered as a second access mode if the cell type indicator is set to ‘FALSE’ and the subscriber group identity exists, wherein the one or more UEs in the particular subscriber group or all UEs in the cell are selectively allowed to be accessed in the second access mode, wherein a cell in first access mode is a CSG (Closed Subscriber Group) cell and a cell in the second access mode is a hybrid cell.