Method and apparatus for channel estimation and data decoding 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 physical resource block (PRB) bundling via higher layer signaling;
• in case that the configuration information includes first information indicating that a precoding resource block group (PRG) size value is indicated via downlink control information (DCI) and second information including at least one PRG size value:
• transmitting, to the terminal, the DCI including a PRG size indicator on a physical downlink control channel (PDCCH), wherein the PRG size indicator is set as a value corresponding to a PRG size value which is one of at least one PRG size value, and
• transmitting, to the terminal, downlink data based on the PRG size corresponding to the PRG size indicator;
• and
• in case that the configuration information includes third information indicating that the PRG size is indicated via the higher layer signaling and fourth information including a PRG size value, transmitting the downlink data based on the PRG size corresponding to the PRG size value included in the fourth information.

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 physical resource block (PRB) bundling via higher layer signaling,
• in case that the configuration information includes first information indicating that a precoding resource block group (PRG) size is indicated via downlink control information (DCI) and second information including at least one PRG size value:
• receive, from the base station, the DCI including a PRG size indicator on a physical downlink control channel (PDCCH), wherein the PRG size indicator is set as a value corresponding to a PRG size value which is one of the at least one PRG size value, and
• identify the PRG size based on the PRG size indicator, and
• in case that the configuration information includes third information indicating that the PRG size is indicated via the higher layer signaling and fourth information including a PRG size value, identify the PRG size based on the PRG size value included in the fourth information.

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 physical resource block (PRB) bundling via higher layer signaling,
• in case that the configuration information includes first information indicating that a precoding resource block group (PRG) size value is indicated via downlink control information (DCI) and second information including at least one PRG size value:
• transmit, to the terminal, the DCI including a PRG size indicator on a physical downlink control channel (PDCCH), wherein the PRG size indicator is set as a value corresponding to a PRG size value which is one of at least one PRG size value, and
• transmit, to the terminal, downlink data based on the PRG size corresponding to the PRG size indicator, and
• in case that the configuration information includes third information indicating that the PRG size is indicated via the higher layer signaling and fourth information including a PRG size value, transmit the downlink data based on the PRG size corresponding to the PRG size value included in the fourth information.