Method and apparatus for configuration of common search space for discovery signal and channel

A method performed by a base station supporting a shared spectrum in a communication system, the method comprising:

• transmitting, to a terminal, a synchronization signal and physical broadcast channel (SS/PBCH) block;
• and
• transmitting, to the terminal, a physical downlink control channel (PDCCH) in at least one common search space (CSS) set included in slots including a monitoring occasion associated with candidate SS/PBCH blocks that are quasi co-located (QCLed) with the transmitted SS/PBCH block based on a QCL parameter,
• wherein the monitoring occasion associated with each of the candidate SS/PBCH blocks is included in two consecutive slots determined that are based on (i) a candidate SS/PBCH block index and (ii) a parameter determined based on the transmitted SS/PBCH block, and
• wherein the parameter determined based on the transmitted SS/PBCH block is not determined as 2, in response to the QCL parameter being 1.

A terminal supporting a shared spectrum in a communication system, the terminal comprising:

• a transceiver configured to:
• receive, from a base station, a synchronization signal and physical broadcast channel (SS/PBCH) block;
• and
• receive, from the base station, a physical downlink control channel (PDCCH) by monitoring a common search space (CSS) set over slots including a monitoring occasion associated with candidate SS/PBCH blocks that are quasi co-located (QCLed) with the received SS/PBCH block based on a QCL parameter,
• wherein the monitoring occasion associated with each of the candidate SS/PBCH blocks is included in two consecutive slots that are determined based on (i) a candidate SS/PBCH block index and (ii) a parameter determined based on the received SS/PBCH block, and
• wherein the parameter determined based on the received SS/PBCH block is not determined as 2, in response to the QCL parameter being 1.

A base station supporting a shared spectrum in a communication system, the base station comprising:

• a transceiver configured to:
• transmit, to a terminal, a synchronization signal and physical broadcast channel (SS/PBCH) block;
• and
• transmit, to the terminal, a physical downlink control channel (PDCCH) in at least one common search space (CSS) set included in slots including a monitoring occasion associated with candidate SS/PBCH blocks that are quasi co-located (QCLed) with the transmitted SS/PBCH block based on a QCL parameter,
• wherein the monitoring occasion associated with each of the candidate SS/PBCH blocks is included in two consecutive slots that are determined based on (i) a candidate SS/PBCH block index and (ii) a parameter determined based on the transmitted SS/PBCH block, and
• wherein the parameter determined based on the transmitted SS/PBCH block is not determined as 2, in response to the QCL parameter being 1.