TRANSMISSION POWER CONTROL METHOD, BASE STATION APPARATUS, AND USER APPARATUS

摘要

To ensure some degree of transmission power control in an uplink even in a case of no assignment of uplink transmission permission from a base station. A base station apparatus for use in a wireless communication system using a shared channel comprises a transmission power control information generating part that generates, based on an uplink signal transmitted from a user apparatus, transmission power control information for the user apparatus; and a radio resource control part that transmits the generated transmission power control information together with an uplink assignment notification in a case of an assignment of uplink radio resource to the user apparatus and that outputs radio resource assignment information to be transmitted as independent transmission power control information in a case of no assignment of uplink radio resource to the user apparatus.