Method and apparatus for configuring demodulation reference signal information in wireless cellular communication system

A method of a base station, the method comprising:

• transmitting, to a user equipment (UE), first information on an additional demodulation reference signal (DM-RS) and second information on a number of a DM-RS symbol based on higher layer signaling, wherein the number of the DM-RS symbol is 1 or 2;
• transmitting, to the UE, downlink control information (DCI) including third information on a time domain resource;
• and
• transmitting, to the UE, at least one DM-RS based on a position of the DM-RS symbol,
• wherein the position of the DM-RS symbol is identified based on the first information, the second information and fourth information on symbols duration for a scheduled physical downlink shared channel (PDSCH) resource, the fourth information being identified based on the third information,
• wherein a position of an additional DM-RS symbol is identified within a value indicated by the first information, based on the symbols duration for the scheduled PDSCH resource.

A user equipment (UE) in a wireless communication system, the UE comprising:

• a transceiver;
• and
• a processor operably connected to the transceiver, the processor configured to:
• acquire first information on an additional demodulation reference signal (DM-RS) and second information on a number of a DM-RS symbol based on higher layer signaling from a base station, wherein the number of the DM-RS symbol is 1 or 2;
• control the transceiver to receive, from the base station, downlink control information (DCI) including third information on a time domain resource;
• identify fourth information on symbols duration for a scheduled physical downlink shared channel (PDSCH) resource based on the third information;
• identify a position of the DM-RS symbol based on the first information, the second information and the fourth information;
• and
• control the transceiver to receive, from the base station, at least one DM-RS based on the position of the DM-RS symbol,
• wherein a position of an additional DM-RS symbol is identified within a value indicated by the first information, based on the symbols duration for the scheduled PDSCH resource.

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

• a transceiver;
• and
• a processor operably connected to the transceiver, the processor configured to control the transceiver to:
• transmit, to a user equipment (UE), first information on an additional demodulation reference signal (DM-RS) and second information on a number of a DM-RS symbol based on higher layer signaling, wherein the number of the DM-RS symbol is 1 or 2;
• transmit, to the UE, downlink control information (DCI) including third information on a time domain resource;
• and
• transmit, to the UE, at least one DM-RS based on a position of the DM-RS symbol,
• wherein the position of the DM-RS symbol is identified based on the first information, the second information and fourth information on symbols duration for a scheduled physical downlink shared channel (PDSCH) resource, the fourth information being identified based on the third information,
• wherein a position of an additional DM-RS symbol is identified within a value indicated by the first information, based on the symbols duration for the scheduled PDSCH resource.