Method and apparatus for transmitting and receiving wireless signal in wireless communication system

A device for wireless communication, the device comprising:

• a memory storing instructions;
• a processor configured to execute the instructions to perform operations,
• wherein the operations of the processor comprise:
• acquiring, through higher layer signaling, a configuration for a tracking reference signal (TRS) for a radio resource control (RRC) idle mode or an RRC inactive mode;
• receiving downlink control information (DCI) carried by a physical downlink control channel (PDCCH) based on a paging-radio network temporary identifier (P-RNTI), in the RRC idle mode or in the RRC inactive mode;
• and
• receiving the TRS in the RRC idle mode or the RRC inactive mode based on availability indication information of the TRS included in the DCI and the acquired configuration for the TRS,
• wherein the configuration for the TRS includes a periodicity and a slot offset of the TRS,
• wherein the configuration includes information for a plurality of TRS resource sets each having a plurality of TRS resources,
• wherein each of the plurality of TRS resource sets is allocated with an identifier (ID) to be used for the availability indication information,
• wherein, for the plurality of TRS resource sets, the availability indication information indicates availability per each ID, and
• wherein the availability indication information includes a plurality of bits associated with a plurality IDs of the plurality of TRS resource sets.

A method for transmitting a signal by a base station in a wireless communication system, the method comprising:

• transmitting, through higher layer signaling, a configuration for a tracking reference signal (TRS) for a terminal in a radio resource control (RRC) idle mode or an RRC inactive mode;
• generating downlink control information (DCI) including availability indication information of the TRS;
• transmitting, to the terminal in the RRC idle mode or the RRC inactive mode based on a paging-radio network temporary identifier (P-RNTI), a physical downlink control channel (PDCCH) including the DCI;
• and
• transmitting the TRS to the terminal in the RRC idle mode or the RRC inactive mode, based on the availability indication information of the TRS and the configuration for the TRS,
• wherein the configuration for the TRS includes a periodicity and a slot offset of the TRS,
• wherein the configuration includes information for a plurality of TRS resource sets each having a plurality of TRS resources,
• wherein each of the plurality of TRS resource sets is allocated with an identifier (ID) to be used for the availability indication information,
• wherein, for the plurality of TRS resource sets, the availability indication information indicates availability per each ID, and
• wherein the availability indication information includes a plurality of bits associated with a plurality IDs of the plurality of TRS resource sets.

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

• a transceiver;
• and
• a processor configured to control the transceiver to:
• transmit, through higher layer signaling, a configuration for a tracking reference signal (TRS) for a terminal in a radio resource control (RRC) idle mode or an RRC inactive mode;
• generate downlink control information (DCI) including availability indication information of the TRS;
• transmit, to the terminal in the RRC idle mode or the RRC inactive mode based on a paging-radio network temporary identifier (P-RNTI), a physical downlink control channel (PDCCH) including the DCI;
• and
• transmit the TRS to the terminal in the RRC idle mode or the RRC inactive mode, based on the availability indication information of the TRS and the configuration for the TRS,
• wherein the configuration for the TRS includes a periodicity and a slot offset of the TRS,
• wherein the configuration includes information for a plurality of TRS resource sets each having a plurality of TRS resources,
• wherein each of the plurality of TRS resource sets is allocated with an identifier (ID) to be used for the availability indication information,
• wherein, for the plurality of TRS resource sets, the availability indication information indicates availability per each ID and
• wherein the availability indication information includes a plurality of bits associated with a plurality IDs of the plurality of TRS resource sets.