Patent ID: 11968139
Assignee: NTT DOCOMO, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. A system comprising a base station and a terminal, wherein:
the base station comprises:
a first processor that controls:
an indication of a resource by a first downlink control information for use in scheduling of a downlink shared channel, and
an indication of a resource by a second downlink control information for use in triggering of a channel state information (CSI) reference signal (CSI-RS); and

a transmitter that transmits at least one of the downlink shared channel and the CSI-RS,
wherein, when the downlink shared channel is scheduled to a resource corresponding to the CSI-RS, the first processor performs a control the indication of the resource by the first downlink control information to receive the downlink shared channel in the terminal,
wherein the first processor configures, by a Radio Resource Control (RRC) signaling, a plurality of candidates of the resource indicated by the second downlink control information, and
wherein the plurality of candidates each contains an index, the index corresponding to a code point of a bit field included in the second downlink control information, and the first processor indicates the resource by using the code point; and

the terminal comprises:
a second processor that controls a reception processing of the downlink shared channel based on the resource indicated by the first downlink control information and the resource indicated by the second downlink control information; and
a receiver that receives at least one of the downlink shared channel and the CSI-RS based on the reception processing,
wherein, when the downlink shared channel is scheduled to the resource corresponding to the CSI-RS, the second processor performs a control to receive the downlink shared channel,
wherein the plurality of candidates is configured by the RRC signaling, and
wherein the plurality of candidates each contains the index, the index corresponding to the code point, and the resource is indicated by notification of the index corresponding to the code point.