Method and device for supporting repetitive csi-rs resource transmission in mobile communication system

A method for transmitting a channel state information reference signal (CSI-RS) in a communication system, the method comprising:

• transmitting, by a base station, to a user equipment (UE), a CSI-RS resource configuration per CSI-RS resource including a CSI-RS resource identifier, information for a number of CSI-RS ports, and information for an orthogonal frequency division multiplexing (OFDM) symbol;
• transmitting, by the base station, to the UE, a configuration for a resource set including a resource set identifier, information for at least one CSI-RS resource, and repetition information,
• wherein a number of the at least one CSI-RS resource is up to a maximum number of CSI-RS resources per resource set, and
• wherein the repetition information is set as either on or off;
• transmitting, by the base station, to the UE, a channel state information (CSI) report configuration including information for reporting parameters and information for a reporting method,
• wherein the information for the reporting parameters indicates at least one of a CSI-RS resource indicator (CRI), a rank indicator (RI), a precoding matrix indicator (PMI), or a channel quality indicator (CQI), and
• wherein the information for the reporting method corresponds to periodic, semi-persistent, or aperiodic;
• and
• receiving, by the base station, from the UE, CSI according to the configuration for the resource set and the CSI report configuration.

A user equipment (UE) for receiving a channel state information reference signal (CSI-RS) in a communication system, the UE comprising:

• a transceiver;
• and
• a controller coupled with the transceiver and configured to:
• acquire, from a base station, a configuration for a resource set including a resource set identifier, information for at least one CSI-RS resource, and repetition information,
• wherein a number of the at least one CSI-RS resource is up to a maximum number of CSI-RS resources per resource set, and
• wherein the repetition information is set as either on or off,
• acquire, from the base station, a CSI-RS resource configuration per CSI-RS resource including a CSI-RS resource identifier, information for a number of CSI-RS ports, and information for an orthogonal frequency division multiplexing (OFDM) symbol,
• acquire, from the base station, a channel state information (CSI) report configuration including information for reporting parameters and information for a reporting method,
• wherein the information for the reporting parameters indicates at least one of a CSI-RS resource indicator (CRI), a rank indicator (RI), a precoding matrix indicator (PMI), or a channel quality indicator (CQI), and
• wherein the information for the reporting method corresponds to periodic, semi-persistent, or aperiodic, and
• transmit, to the base station, CSI based on the configuration for the resource set and the CSI report configuration.

A base station for transmitting a channel state information reference signal (CSI-RS) in a communication system, the base station comprising:

• a transceiver;
• and
• a controller coupled with the transceiver and configured to:
• transmit, to a user equipment (UE), a CSI-RS resource configuration per CSI-RS resource including a CSI-RS resource identifier, information for a number of CSI-RS ports, and information for an orthogonal frequency division multiplexing (OFDM) symbol,
• transmit, to the UE, a configuration for a resource set including a resource set identifier, information for at least one CSI-RS resource, and repetition information,
• wherein a number of the at least one CSI-RS resource is up to a maximum number of CSI-RS resources per resource set, and
• wherein the repetition information is set as either on or off,
• transmit, to the UE, a channel state information (CSI) report configuration including information for reporting parameters and information for a reporting method,
• wherein the information for the reporting parameters indicates at least one of a CSI-RS resource indicator (CRI), a rank indicator (RI), a precoding matrix indicator (PMI), or a channel quality indicator (CQI), and
• wherein the information for the reporting method corresponds to periodic, semi-persistent, or aperiodic, and
• receive, from the UE, CSI according to the configuration for the resource set and the CSI report configuration.