Channel state information (csi) measurement and report outside active downlink (dl) bandwidth part (bwp)

A base station (BS) comprising:

• a processor;
• and
• a transceiver operably connected to the processor, the transceiver configured to:
• transmit a first configuration for a first set of downlink (DL) bandwidth parts (BWPs), wherein each DL BWP in the first set of DL BWPs has an index;
• transmit a second configuration for reference signal (RS) resource sets in a second set of DL BWPs that is a subset of the first set of DL BWPs;
• transmit a third configuration for channel state information (CSI) reports corresponding to the second set of DL BWPs;
• transmit RS resources from the RS resource sets in a third set of DL BWPs that is a subset of the second set of DL BWPs;
• and
• receive a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) that includes a number of CSI reports and information indicating corresponding DL BWPs indexes.

A method comprising:

• receiving a first configuration for a first set of downlink (DL) bandwidth parts (BWPs), wherein each DL BWP in the first set of DL BWPs has an index;
• receiving a second configuration for reference signal (RS) resource sets in a second set of DL BWPs that is a subset of the first set of DL BWPs;
• receiving a third configuration for channel state information (CSI) reports corresponding to the second set of DL BWPs;
• receiving RS resources from the RS resource sets in a third set of DL BWPs that is a subset of the second set of DL BWPs;
• determining a first number of CSI reports based on the received RS resources;
• determining a second number of CSI reports, from the first number of CSI reports, that have (i) values for a CSI report quantity that are larger than values for the CSI report quantity in other CSI reports from the first number of CSI reports and (ii) corresponding DL BWP indexes;
• and
• transmitting a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) that includes the second number of CSI reports of the values for the CSI report quantity and information indicating the corresponding DL BWP indexes.