Patent ID: 8588812
Filing Date: 2013-11-19
Classification: H04W

Abstract:
1. A method for detecting closed subscriber group (CSG) cells by a user equipment in a wireless communication system, the method comprising: storing information of a CSG cell if the user equipment accesses the CSG cell in accordance with a request of a user, wherein the CSG cell is discovered by searching available frequencies for the user equipment, and wherein the information includes a frequency of the CSG cell located; determining a current position of the user equipment; checking whether or not the current position of the user equipment is the same as a position of the CSG cell, which is previously stored; measuring, after the checking, a change of a physical layer identifier of a corresponding cell when the current position of the user equipment corresponds to the position of the CSG cell; and detecting the corresponding cell as the CSG cell, which is previously accessed, when the measured physical layer identifier corresponds to a physical layer identifier of the previously stored CSG cell.