METHOD AND BASE STATION FOR COORDINATED MULTI POINT DATA TRANSMISSION

摘要

A method and base station for coordinated multi point data transmission are disclosed. The method includes: a base station receiving a per-cell CQI value reported by a UE; looking up an SINR-CQI mapping table according to the per-cell CQI value, and acquiring a subband/broadband SINR value; performing CQI recalculation according to the subband/broadband SINR value, and acquiring a recalculated subband/broadband CQI value; and selecting modulation and coding according to the recalculated subband/broadband CQI value to schedule data transmission. With the method and base station of the embodiments of the present invention, in a CoMP system, in a joint transmission scenario, the base station performs JT CQI recalculation according to the per-cell CQI value fed back by the UE, and acquires the recalculated subband/broadband CQI value; and selects modulation and coding according to the recalculated subband/broadband CQI value to schedule data transmission, thereby the accuracy of the CQI value used by the BS for scheduling is improved, and the oscillation during an AMC process is reduced.