The radio base station device, the back hole sub frame

摘要

PROBLEM TO BE SOLVED: To provide a wireless base station device, a mobile terminal device and a cell selection method that can perform optimum cell selection when relay transmission is performed.;SOLUTION: The cell selection method of the present invention comprises determining a specific subframe, which includes data and measures reception quality in the mobile terminal device, in the wireless base station device; measuring a first reception quality in the mobile terminal device by using a reference signal of the specific subframe transmitted from the wireless base station device; measuring a second reception quality by using the reference signal of the specific subframe transmitted from the wireless base station device through a wireless relay station device; transmitting a measurement of the first reception quality and a measurement of the second reception quality to the wireless base station device; selecting a cell, which is connected to the mobile terminal device, in the wireless base station device by using the measurement of the first reception quality and the measurement of the second reception quality; and transmitting information of the determined cell to the mobile terminal device.;COPYRIGHT: (C)2012,JPO&INPIT