RADIO BASE STATION APPARATUS, MOBILE TERMINAL APPARATUS, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD

摘要

Provided are a wireless base station device accommodating the increase in the number of users, a mobile terminal device, a wireless communication system, and a wireless communication method. A wireless base station device is provided with: a signal generation unit for generating a first and second downlink control signal addressed to a mobile terminal device; a first multiplexing unit for multiplexing the first downlink control signal to a control region from the beginning of a subframe to a predetermined number of symbols; a second multiplexing unit for frequency-division multiplexing the second downlink control signal to a wireless resource from the subsequent symbol in the control region to the last symbol in the subframe; and a transmission unit for transmitting the first downlink control signal that was multiplexed to the control region and the second downlink control signal that was multiplexed to a wireless resource.