|発明の名称||RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION DEVICE AND RADIO COMMUNICATION CONTROL METHOD|
PROBLEM TO BE SOLVED: To provide a radio communication system capable of suppressing the deterioration of uplink throughput of a radio terminal in a hidden terminal state if a portion of radio terminals have relationship of a hidden terminal with a base station.
SOLUTION: The radio communication system, constituted by a base station, a relay station connected to the base station, and a plurality of radio terminals, connected to the relay station, for communicating with the base station through the relay station, includes: hidden terminal detection means for detecting a radio terminal having hidden terminal relationship between the base station and the radio terminal; and control means for setting a first contention window for use in the base station and the relay station in a manner to be smaller than a second contention window for use in the radio terminal having the hidden terminal relationship, and for setting the second contention window in a manner to be smaller than a third contention window for use in a radio terminal not having the hidden terminal relationship.
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