# US 11,910,463 B2 · Method and apparatus for transmitting and receiving wireless signal in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,910,463 B2 - Document ID: US11910463B2 - Status: Granted - Kind: B2 - Application number: 17/951,041 - Filed: 2022-09-22 - Published: 2023-02-02 - Granted: 2024-02-20 - Earliest claimed: 2020-08-07 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Seunggye Hwang; Youngdae Lee; Jaehyung Kim; Hyunsoo Ko; Inkwon Seo; Seonwook Kim - Web page: https://patentgrep.com/patent/US11910463B2 ## CPC - H04W 72/232: the control data signalling from the physical layer, e.g. DCI signalling - H04W 76/20: Manipulation of established connections - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 68/005: {Transmission of information for alerting of incoming communication} - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals} - H04L 5/0058: {Allocation criteria} - H04L 27/2613: {Structure of the reference signals} - H04W 76/27: Transitions between radio resource control [RRC] states - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract User equipment according to an embodiment of the present invention may obtain a configuration of a reference signal for an RRC idle mode or an RRC inactive mode, determine the availability of the configured reference signal, and receive the reference signal in the RRC idle mode or the RRC inactive mode. ## Claims ### Claim 1 A method for receiving a signal by a terminal in a wireless communication system, the method comprising: 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. ### Claim 2 (depends on 1) The method of claim 1, wherein the terminal obtains, based on the configuration for the TRS and the availability indication information of the TRS, information regarding a specific time duration in which the TRS can be configured. ### Claim 3 (depends on 1) The method of claim 1, wherein the availability of the TRS is indicated for a specific time duration. ### Claim 4 (depends on 3) The method of claim 3, wherein an end of the specific time duration is related to a position of a paging occasion (PO) of the DCI. ### Claim 5 (depends on 1) The method of claim 1, wherein the configuration for the TRS is acquired through a system information block (SIB). ### Claim 6 (depends on 1) The method of claim 1, wherein the configuration for the TRS is acquired in an RRC connected mode, wherein the terminal receives the TRS in the RRC idle mode or the RRC inactive mode by maintaining the acquired configuration for the TRS even when the terminal enters the RRC idle mode or the RRC inactive mode. ### Claim 7 (depends on 1) The method of claim 1, wherein the DCI indicates the availability of the TRS by a short message field configured based on 3rd generation partnership project (3GPP). ### Claim 8 (depends on 1) A non-transitory computer-readable recording medium having recorded thereon a program for carrying out the method of claim 1. ### Claim 9 (depends on 1) The method of claim 1, wherein the plurality of bits are configured to indicate the availability per each ID. ### Claim 10 (depends on 1) The method of claim 1, wherein the availability indication information is configured to represent availability of a corresponding TRS resource set and an ID of the corresponding TRS resource set. ### Claim 11 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. ### Claim 12 (depends on 11) The device of claim 11, further comprising: a transceiver, wherein the device is a user equipment (UE) in a wireless communication system. ### Claim 13 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. ### Claim 14 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.