Patent ID: 8738011

Claim:
An inter-frequency measurement report method of a user equipment in a wireless communication system including macro and Closed Subscriber Group (CSG) cells, the method comprising: performing measurements for Physical Cell Identifiers (PCIs) used for a macro cell and a CSG cell comprising an accessible CSG cell and a non-accessible CSG cell when measurement for inter-frequency handover is performed; determining whether a measurement of at least one cell fulfills an inter-frequency measurement report event; in response to at least one cell fulfilling the inter-frequency measurement report event, identifying a cell type of a best cell having a greatest received signal strength among at least two cells fulfilling the inter-frequency measurement report event; transmitting, only if the best cell is a macro cell or an accessible CSG cell, the inter-frequency measurement report to a serving base station; and if the best cell is not the non-accessible CSG cell, performing an error handling process.