Method and apparatus for reduction of CSI-RS transmission overhead in wireless communication system

A method of a base station in a wireless communication system, the method comprising:

• transmitting, to a terminal, configuration information on a channel state information reference signal (CSI-RS), the configuration information including information on a transmission bandwidth of the CSI-RS;
• and
• transmitting a synchronization signal block (SSB) and the CSI-RS,
• wherein in case that the SSB and the CSI-RS are configured to be allocated in an orthogonal frequency division multiplexing (OFDM) symbol and the CSI-RS is for reporting reference signal received power (RSRP) information associated with channel state information (CSI) reporting, a transmission bandwidth of the SSB and the transmission bandwidth of the CSI-RS are not overlapped in a frequency domain, and the SSB and the CSI-RS are assumed to be quasi-collocated in spatial reception parameters.

A terminal in a wireless communication system, the terminal comprising:

• a transceiver;
• and
• a controller coupled with the transceiver and configured to:
• receive, from a base station, configuration information on a channel state information reference signal (CSI-RS), the configuration information including information on a transmission bandwidth of the CSI-RS,
• identify a transmission bandwidth of a synchronization signal block (SSB), and
• receive the SSB and the CSI-RS,
• wherein in case that the SSB and the CSI-RS are configured to be allocated in an orthogonal frequency division multiplexing (OFDM) symbol and the CSI-RS is for reporting reference signal received power (RSRP) information associated with channel state information (CSI) reporting, the transmission bandwidth of the SSB and the transmission bandwidth of the CSI-RS are not overlapped in a frequency domain, and the SSB and the CSI-RS are assumed to be quasi-collocated in spatial reception parameters.

A base station in a wireless communication system, the base station comprising:

• a transceiver;
• and
• a controller coupled with the transceiver and configured to:
• transmit, to a terminal, configuration information on a channel state information reference signal (CSI-RS), the configuration information including information on a transmission bandwidth of the CSI-RS, and
• transmit a synchronization signal block (SSB) and the CSI-RS,
• wherein in case that the SSB and the CSI-RS are configured to be allocated in an orthogonal frequency division multiplexing (OFDM) symbol and the CSI-RS is for reporting reference signal received power (RSRP) information associated with channel state information (CSI) reporting, a transmission bandwidth of the SSB and the transmission bandwidth of the CSI-RS are not overlapped in a frequency domain, and the SSB and the CSI-RS are assumed to be quasi-collocated in spatial reception parameters.