EFFICIENT UPLINK REPORTING IN CARRIER AGGREGATION SYSTEMS

摘要

Disclosed are a mobile terminal device and wireless base station device for various mobile communication systems where multiple mobile communication systems are mixed together. The mobile terminal device is the mobile terminal device of a wireless communication system that sends and receives with a component carrier with a relatively narrow system bandwidth, and with uplinks and downlinks assigned to a relatively broad system bandwidth constituted by grouping a plurality of component carriers, wherein the mobile terminal device is characterized by being equipped with encoders/data-modulators (101a-101N) that encode and data-modulate upstream control signals that include report data of individual component carriers assigned to the downlink, and mapping units (102a-102N) that map the encoded/data-modulated control signals to upstream communication channels.