Radio communication system, radio base station apparatus, user terminal and radio communication method

摘要

The present invention is designed to prevent the decrease of capacity even when the ratio of uplink subframes and downlink subframes is changed in each component carrier in TDD carrier aggregation. With the radio communication method according to the present invention, a radio base station apparatus generates a downlink control channel signal containing downlink control information including carrier indicator field information, and transmits the downlink control channel signal to a user terminal, and the user terminal receives the downlink control channel signal and executes signal processing with respect to the downlink signal in accordance with the downlink control information. In this case, the carrier indicator field information is information which associates a carrier index and the number of subframes to schedule victim subframes.

主权项

1. A radio communication system comprising:
a radio base station apparatus; and a user terminal that performs radio communication with the radio base station apparatus by time division duplexing, and which achieves broadbandization by carrier aggregation, wherein: the radio base station apparatus comprises:
a processor of the radio base station that generates a downlink control channel signal containing downlink control information including carrier indicator field information; anda transmitter that transmits the downlink control channel signal to the user terminal; and the user terminal comprises:
a receiver that receives the downlink control channel signal; anda processor of the user terminal that executes signal processing with respect to a downlink signal in accordance with the downlink control information, wherein the carrier indicator field information is information that associates a carrier index and a number of subframes to schedule victim subframes.