Method and apparatus for transmitting downlink control information in wireless communication system

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

• generating downlink control information (DCI) including frequency domain resource allocation information, the frequency domain resource allocation information indicating an allocated resource for transmitting or receiving data;
• transmitting the DCI on a physical downlink control channel (PDCCH);
• and
• transmitting or receiving the data on the allocated resource,
• wherein in case that the frequency domain resource allocation information is based on a first bandwidth of a first bandwidth part, and the DCI is for a second bandwidth part corresponding to a second bandwidth that is different from the first bandwidth, the allocated resource depends on a scaling factor that is obtained based on the first bandwidth and the second bandwidth.

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

• a transceiver;
• and
• a controller coupled with the transceiver and configured to:
• receive downlink control information (DCI) including frequency domain resource allocation information on a physical downlink control channel (PDCCH) from a base station,
• identify an allocated resource for transmitting or receiving data based on the frequency domain resource allocation information, and
• transmit or receive the data on the allocated resource,
• wherein in case that the frequency domain resource allocation information is based on a first bandwidth of a first bandwidth part, and the DCI is for a second bandwidth part corresponding to a second bandwidth that is different from the first bandwidth, the allocated resource is identified by applying a scaling factor that is obtained based on the first bandwidth and the second bandwidth.

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

• a transceiver;
• and
• a controller coupled with the transceiver and configured to:
• generate downlink control information (DCI) including frequency domain resource allocation information, the frequency domain resource allocation information indicating an allocated resource for transmitting or receiving data,
• transmit the DCI on a physical downlink control channel (PDCCH), and
• transmit or receive the data on the allocated resource,
• wherein in case that the frequency domain resource allocation information is based on a first bandwidth of a first bandwidth part, and the DCI is for a second bandwidth part corresponding to a second bandwidth that is different from the first bandwidth, the allocated resource depends on a scaling factor that is obtained based on the first bandwidth and the second bandwidth.