User equipments, base stations and methods for time domain correlation information signaling

A base station comprising:

• transmitting circuitry configured to transmit first information to configure one or more non-zero power channel state information reference signal (CSI-RS) resources and second information to configure CSI reporting;
• and
• receiving circuitry configured to receive a channel state information (CSI) report including phase rotation values,
• wherein:
• the second information is associated with the first information,
• the first information includes a first parameter trs-Info indicating that the one or more CSI-RS resources are for tracking in the time and frequency domain,
• the second information includes a second parameter reportQuantity indicating which kind of CSI is set to ‘TDCI’.

A communication method of a user equipment (UE) comprising:

• receiving first information to configure one or more non-zero power channel state information reference signal (CSI-RS) resources and second information to configure CSI reporting,
• measuring phase rotation values based on the second information, and
• transmitting a channel state information (CSI) report including the phase rotation values,
• wherein:
• the second information is associated with the first information,
• the first information includes a first parameter trs-Info indicating that the one or more CSI-RS resources are for tracking in the time and frequency domain,
• the second information includes a second parameter reportQuantity indicating which kind of CSI is set to ‘TDCI’.