RADIO COMMUNICATION SYSTEM, RADIO TERMINAL AND RADIO COMMUNICATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a radio communication system for reducing overheads accompanying feedback while making inter-base-station cooperative MIMO (Multi-Input Multi-Output) communication function normally.

SOLUTION: The radio communication system 1 includes: the radio terminal UE; a radio base station BS1 for transmitting radio signals RS1 to the radio terminal UE corresponding to the feedback from the radio terminal UE; and a radio base station BS2 for transmitting radio signals RS2 to the radio terminal UE by the same frequency and same time as the radio signals RS1. The time interval of the feedback to the radio base station BS1 by the radio terminal UE is longer than the time interval of the feedback to the radio base station BS2 by the radio terminal UE.

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