Terminal, transmitting device, reception quality reporting method and reception method

摘要

A terminal which is capable of selecting appropriate transmission points while reducing the overhead for channel state information (CSI) reporting is provided. A measuring unit (303) uses a plurality of reference signals from a plurality of transmission points to measure a first reception quality with respect to each of the plurality of reference signals. A receiving unit (301) receives a first piece of information concerning at least one specific reference signal among the plurality of reference signals, and the measuring unit (303) uses the specific reference signal to measure a second reception quality on the basis of the first piece of information. A transmitting unit (304) reports the first reception quality, which satisfies a predetermined condition, and the second reception quality.

主权项

1. A terminal comprising integrated circuits configured to:
measure, using a plurality of channel state information reference signals (CSI-RSs) from a plurality of first transmission points of a first cell of a first macro base station and having a first cell identifier of the first macro base station, a reception power for each of the plurality of CSI-RSs, the plurality of CSI-RSs being indicated in a candidate list transmitted from the first macro base station; report the reception power for first CSI-RSs corresponding to the reception power that satisfies a first reporting condition along with an identification of the first CSI-RSs; receive first information specifying at least one CSI-RS selected by the first macro base station among the first CSI-RSs for which the report has been transmitted; measure channel state information (CSI) for the at least one specified CSI-RS; report the CSI for the specified at least one CSI-RS to the first macro base station; wherein for a handover to a second cell of a second macro base station with a plurality of second transmission points using a second cell identifier of the second macro base station, the second cell identifier is different from the first cell identifier; the reception power for a cell specific reference signal (CRS) is measured from one of the plurality of second transmission points; when the reception power for the CRS satisfies a second reporting condition, the reception power for each of the plurality of CSI-RSs is measured from the plurality of second transmission points for transmission in a handover completion message; the reception power for the CRS satisfying the second reporting condition is reported along with an identification of the second cell corresponding to the reception power satisfying the second reporting condition; an instruction for the handover and second information necessary for the handover is received after the report of the reception power for the CRS along with the identification of the second cell; and the handover completion message is transmitted including the reception power for the each of the plurality of CSI-RSs from the plurality of second transmission points.