DMRS port grouping method and apparatus for use in wireless cellular communication system

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

• a transceiver;
• and
• a controller operably connected to the transceiver and configured to identified demodulation reference signal (DMRS) type information and DMRS symbol length information, identified port number information for receiving a DMRS, and control the transceiver to receive the DMRS based on the DMRS type information, the DMRS symbol length information and port number information,
• wherein the port number information indicates a port number for the terminal in DMRS information including parameters for code division multiplexing (CDM) group information, offset information, frequency-domain orthogonal cover code (OCC) information, and time-domain OCC information corresponding to each port number of multiple port numbers, and
• wherein the DMRS information is defined per DMRS type.

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

• transmitting a first message associated with demodulation reference signal (DMRS) type information and DMRS symbol length information;
• transmitting a second message including port number information for receiving a DMRS by a terminal;
• and
• transmitting the DMRS to the terminal based on the information included in the first and second messages,
• wherein the port number information indicates a port number for the terminal in DMRS information including parameters for code division multiplexing (CDM) group information, offset information, frequency-domain orthogonal cover code (OCC) information, and time-domain OCC information corresponding to each port number of multiple port numbers, and
• wherein the DMRS information is defined per DMRS type.

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

• a transceiver;
• and
• a controller operably connected to the transceiver and configured to control the transceiver to transmit a first message associated with demodulation reference signal (DMRS) type information and DMRS symbol length information, transmit a second message including port number information for receiving a DMRS by a terminal, and transmit the DMRS to the terminal based on the information included in the first and second messages,
• wherein the port number information indicates a port number for the terminal in DMRS information including parameters for code division multiplexing (CDM) group information, offset information, frequency-domain orthogonal cover code (OCC) information, and time-domain OCC information corresponding to each port number of multiple port numbers, and
• wherein the DMRS information is defined per DMRS type.