A method by which a base station establishes a cell in a wireless communication system, the base station being configured to transmit and receive a signal from a neighboring cell, the method comprising: detecting cell IDs of neighboring cells using synchronization signals transmitted from the neighboring cells (S710); identifying, based on the cell IDs, whether resources for common reference signals, CRSs, transmitted from the neighboring cells overlap each other and whether resources for data transmitted from the neighboring cells overlap (S720); estimating channels of the neighboring cells using the CRSs (S730); determining an interference in a wireless environment of neighboring cells having no inter-cell cooperation based on whether the resources for the CRSs transmitted from the neighboring cells overlap, whether the resources for the data transmitted from the neighboring cells overlap, and the estimated channels (S740); performing data detection according to the determined interference to obtain information of the neighboring cells from a system information block, SIB (S750, S760); and establishing a cell using the result of identifying whether the resources for CRSs overlap and whether the resources for data overlap, the result of estimating channels of the neighboring cells, the determined interference and the information of the neighboring cells (S770), wherein establishing the cell refers to a synchronization of the base station with the serving cell by using the obtained SIB, and wherein the performing the data detection comprises: calculating an interference power at a position at which a CRS of an ith cell is transmitted; determining a minimum mean square error, MMSE, weight based on interference power; and detecting system information by applying the MMSE weight. detecting cell IDs of neighboring cells using synchronization signals transmitted from the neighboring cells (S710); identifying, based on the cell IDs, whether resources for common reference signals, CRSs, transmitted from the neighboring cells overlap each other and whether resources for data transmitted from the neighboring cells overlap (S720); estimating channels of the neighboring cells using the CRSs (S730); determining an interference in a wireless environment of neighboring cells having no inter-cell cooperation based on whether the resources for the CRSs transmitted from the neighboring cells overlap, whether the resources for the data transmitted from the neighboring cells overlap, and the estimated channels (S740); performing data detection according to the determined interference to obtain information of the neighboring cells from a system information block, SIB (S750, S760); and establishing a cell using the result of identifying whether the resources for CRSs overlap and whether the resources for data overlap, the result of estimating channels of the neighboring cells, the determined interference and the information of the neighboring cells (S770), wherein establishing the cell refers to a synchronization of the base station with the serving cell by using the obtained SIB, and wherein the performing the data detection comprises: calculating an interference power at a position at which a CRS of an ith cell is transmitted; determining a minimum mean square error, MMSE, weight based on interference power; and detecting system information by applying the MMSE weight. calculating an interference power at a position at which a CRS of an ith cell is transmitted; determining a minimum mean square error, MMSE, weight based on interference power; and detecting system information by applying the MMSE weight. <EOS>