Patent ID: 9634808
Date: 2017-04-25
CPC Classifications: H04B,H04L,H04W

Claim:
1. A radio communication system comprising: a plurality of radio base stations; and a user terminal that is configured to be able to perform coordinate multi-point transmission and reception with the plurality of radio base stations, wherein each of the radio base stations has: a transmitter that transmits downlink control information including bit information defining a predetermined rate matching pattern to the user terminal, the predetermined rate matching pattern being selected from a table defining a plurality of rate matching patterns, the user terminal has: a receiver that receives the downlink control information; and a processor coupled to a memory that performs rate matching based on the bit information defining the predetermined rate matching pattern, the plurality of rate matching patterns comprise a rate matching pattern having combinations of a cell-specific reference signal pattern and an interference measurement reference signal pattern used where transmission is performed from a plurality of radio base stations using an MBSFN subframe or new carrier type, the combinations being aggregated in a first plurality of bits and a rate matching pattern having a combination of an interference measurement reference signal pattern and cell-specific reference signal patterns corresponding to each radio base station using a normal subframe, the combination being defined in a second plurality of bits different from the first plurality of bits, when the receiver receives the first plurality of bits, the processor performs the rate matching based on the bit information as well as subframe configurations and the interference measurement reference signal patterns of the radio base station, and when the receiver receives the second plurality of bits, the processor performs the rate matching by determining the cell-specific reference signal pattern based on a subframe configuration of the radio base station indicated by the second plurality of bits and determining the interference measurement reference signal pattern of the radio base station indicated by the second plurality of bits.