Method and apparatus for inter-cell downlink and uplink beam indication, measurement and reporting

A base station (BS), comprising:

• a transceiver configured to:
• transmit first information for a physical cell identifier (PCI) different from a serving cell PCI;
• and
• transmit second information for source or measurement reference signals (RSs) for the PCI;
• and
• a processor operably connected to the transceiver, the processor configured to:
• generate one or more TCI states indicating resources of the source RSs for the PCI;
• generate one or more channel state information (CSI) resource settings or one or more CSI-RS resource sets configuring resources of the measurement RSs for the PCI;
• and
• generate one or more CSI reporting settings configuring a beam report for the PCI,
• wherein the transceiver is configured to receive the beam report for the PCI, and
• wherein a beam refers to a spatial property used to receive or transmit a source RS or a channel.

A method for operating a user equipment (UE), the method comprising:

• receiving first information for a physical cell identifier (PCI) different from a serving cell PCI;
• receiving second information for source or measurement reference signals (RSs) for the PCI;
• determining, based on one or more transmission configuration indicator (TCI) states, the first information, and the second information, a reception spatial domain filter for reception of at least one of downlink (DL) RSs and channels from the PCI;
• measuring, based on the first information and the second information, the measurement RS, wherein resources of the measurement RSs from the PCI are configured in one or more channel state information (CSI) resource settings or in one or more CSI-RS resource sets;
• determining, based on the measured measurement RSs, the first information, and the second information, a beam report, wherein the beam report for the PCI is configured in one or more CSI reporting settings;
• and
• transmitting the beam report for the PCI on an uplink (UL) channel,
• wherein a beam refers to a spatial property used to receive or transmit a source RS or a channel.