WIRELESS BASE STATION DEVICE, MOBILE TERMINAL DEVICE, AND TRANSMISSION ELECTRIC POWER CONTROL METHOD

摘要

To provide a radio base station apparatus, mobile terminal apparatus and transmission power control method for enabling conventional inter-cell interference reduction techniques and ULCoMP to be used together, a radio base station apparatus of the invention is characterized by having a ULCoMP processing section (2085) that applies ULCoMP to a mobile terminal (100 1 ) when a difference (PL 2 -PL 1 ) between a path loss PL 1 between the mobile terminal (100 1 ) and a base station apparatus (200 1 ) connected to the mobile terminal (100 1 ) and a path loss PL 2 between the mobile terminal (100 1 ) and a base station apparatus (200 2 ) with the lowest path loss for the mobile terminal (100 1 ) is within a predetermined range, and a transmission power control section (2089) that performs transmission power control for application of ULCoMP when the ULCoMP is applied, while performing transmission power control for non-application of the ULCoMP when the ULCoMP is not applied.