RADIO BASE STATION, USER TERMINAL, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD

摘要

To achieve traffic adaptation gain, while reducing inter-cell interference, a radio communication system in which TDD is used is disclosed. The radio communication system is one in which each radio base station in a cluster communicates with a user terminal by using a UL/DL configuration, and has a subset selection section that selects the subset to use in the cluster, from a plurality of subsets each of which includes a plurality of UL/DL configurations determined based on the number of fixed subframes, in which the transmission direction is fixed in the cluster, and a UL/DL configuration selection section that selects the UL/DL configuration to use to communicate with the user terminal, from a plurality of UL/DL configurations that are included in the selected subset.

主权项

1. A radio base station that communicates with a user terminal by using a UL/DL configuration, which represents a configuration of an uplink subframe and a downlink subframe in a radio frame, the radio base station comprising:
a subset selection section that selects a subset to use in a cluster, from a plurality of subsets, each of which includes a plurality of UL/DL configurations determined based on the number of fixed subframes in which a transmission direction is fixed in the cluster; and a UL/DL configuration selection section that selects a UL/DL configuration to use to communicate with the user terminal, from a plurality of UL/DL configurations that are included in the selected subset.