Device and method for turning on/off synchronization signal and broadcast channel signal in wireless communication system

A method comprising:

• transmitting downlink control information (DCI) related to system information;
• transmitting system information including first information related to positions of synchronization signal/physical broadcast channel blocks (SSBs) based on allocation information included in the DCI;
• transmitting second information related to on or off of the SSBs;
• and
• transmitting at least one of the SSBs based on the first information and the second information.

An apparatus comprising:

• a transceiver;
• and
• a processor connected to the transceiver,
• wherein the processor is configured to:
• receive downlink control information (DCI) related to system information;
• obtain allocation information for receiving the system information based on the DCI;
• receive the system information based on the allocation information;
• obtain first information related to positions of synchronization signal/physical broadcast channel blocks (SSBs) included in the system information;
• receive second information related to on or off of the SSBs;
• and
• receive at least one of the SSBs based on the first information and the second information.