# US 12,114,305 B2 · Method for performing uplink transmission in wireless communication system and apparatus therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,114,305 B2 - Document ID: US12114305B2 - Status: Granted - Kind: B2 - Application number: 17/422,119 - Filed: 2020-01-09 - Published: 2022-04-14 - Granted: 2024-10-08 - Earliest claimed: 2019-01-10 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Jonghyun Park; Jiwon Kang - Web page: https://patentgrep.com/patent/US12114305B2 ## CPC - H04W 72/1268: of uplink data flows - H04L 5/0023: {Time-frequency-space} - 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 5/0051: {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 16/28: using beam steering - H04W 56/001: {Synchronization between nodes} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 72/542: using measured or perceived quality - H04B 7/0628: {Diversity capabilities} - H04B 7/0639: {Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L 5/001: {the frequencies being arranged in component carriers} - 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) - H04B: TRANSMISSION ## Abstract The present specification discloses a method and an apparatus for transmitting/receiving a physical uplink shared channel in a wireless communication system. Specifically, a method in which a terminal transmits a physical uplink shared channel (PUSCH) in a wireless communication system comprises the steps of: receiving configuration information related to transmission of the PUSCH; receiving downlink control information that schedules the PUSCH, the downlink control information comprising information that indicates a downlink reference signal (DL RS) related to a beam for transmission of the PUSCH; and transmitting the PUSCH by using the beam. ## Claims ### Claim 1 A method for transmitting, by a user equipment (UE), a Physical Uplink Shared Channel (PUSCH) in a wireless communication system, the method comprising: receiving configuration information related to transmission of the PUSCH; receiving downlink control information scheduling the PUSCH, the downlink control information including information representing a downlink reference signal (DL RS) related to a beam for transmission of the PUSCH; and transmitting the PUSCH by using the beam, wherein the transmission of the PUSCH is based on port virtualization applied to most recent recently transmitted sounding reference signal (SRS) in a specific resource, wherein the specific resource is an SRS resource in which the DL RS is configured as spatial related information, and wherein the port virtualization is applied based on a first matrix determined by a number of antenna ports of the UE×a number of ports of the specific resource, related to generation of the number of antenna ports from the number of ports of the specific resource. ### Claim 2 (depends on 1) The method of claim 1, wherein the information representing the DL RS is a channel state information-reference signal resource indicator (CRI) or an synchronization signal block resource indicator (SSBRI). ### Claim 3 (depends on 1) The method of claim 1, wherein the most recently transmitted SRS is performed within a preconfigured time duration having a current time as an end point. ### Claim 4 (depends on 1) The method of claim 1, wherein the SRS resource belongs to an SRS resource set in which a higher layer parameter usage is configured as beam management. ### Claim 5 (depends on 4) The method of claim 4, wherein when there is a plurality of SRS resources, the port virtualization is applied based on the SRS transmission in an SRS resource having an index according to a specific criterion among the plurality of SRS resources. ### Claim 6 (depends on 1) The method of claim 1, further comprising: transmitting UE capability information related to the number of antenna ports of the UE. ### Claim 7 (depends on 6) The method of claim 6, wherein the configuration information includes the number of ports of the specific resource, and wherein the number of ports of the specific resource is equal to or smaller than the number of antenna ports of the UE. ### Claim 8 (depends on 7) The method of claim 7, wherein based on that the number of ports of the specific resource is smaller than the number of antenna ports of the UE, the port virtualization related to the transmission of the PUSCH is performed based on an operation of multiplying the first matrix by a second matrix determined by the number of ports of the specific resource×a number of layers. ### Claim 9 (depends on 8) The method of claim 8, wherein the second matrix is based on the scheduling information, and wherein the downlink control information includes at least one of a transmit precoding matrix indicator (TPMI) or a transmit rank indicator (TRI). ### Claim 10 (depends on 1) The method of claim 1, wherein the beam is a beam corresponding to a beam receiving the DL RS. ### Claim 11 A UE for transmitting a Physical Uplink Shared Channel (PUSCH) in a wireless communication system, the UE comprising: one or more transceivers; one or more processors; and one or more memories operably connected to the one or more processors, and storing instructions, when executed by the one or more processors, which configure the one or more processors to perform operations, wherein the operations include receiving configuration information related to transmission of the PUSCH, receiving downlink control information scheduling the PUSCH, the downlink control information including information representing a downlink reference signal (DL RS) related to a beam for transmission of the PUSCH; and transmitting the PUSCH by using the beam, wherein the transmission of the PUSCH is based on port virtualization applied to most recently transmitted sounding reference signal (SRS) in a specific resource, wherein the specific resource is an SRS resource in which the DL RS is configured as spatial related information, and wherein the port virtualization is applied based on a first matrix determined by a number of antenna ports of the UE×a number of ports of the specific resource, related to generation of the number of antenna ports from the number of ports of the specific resource. ### Claim 12 (depends on 11) The UE of claim 11, wherein the information representing the DL RS is a channel state information-reference signal resource indicator (CRI) or an synchronization signal block resource indicator (SSBRI). ### Claim 13 (depends on 11) The UE of claim 11, wherein the operations further include transmitting UE capability information related to the number of antenna ports of the UE. ### Claim 14 (depends on 13) The UE of claim 13, wherein the configuration information includes the number of ports of the specific resource, and wherein the number of ports of the specific resource is equal to or smaller than the number of antenna ports of the UE. ### Claim 15 (depends on 14) The UE of claim 14, wherein based that the number of ports of the specific resource is smaller than the number of antenna ports of the UE, the port virtualization related to the transmission of the PUSCH is performed based on an operation of multiplying the first matrix by a second matrix determined by the number of ports of the specific resource×a number of layers. ### Claim 16 (depends on 11) The UE of claim 11, wherein the beam is a beam corresponding to a beam receiving the DL RS. ### Claim 17 A method for receiving, by a base station, a Physical Uplink Shared Channel (PUSCH) in a wireless communication system, the method comprising: transmitting configuration information related to transmission of the PUSCH; transmitting downlink control information scheduling the PUSCH, the downlink control information including information representing a downlink reference signal (DL RS) related to a beam for transmission of the PUSCH; and receiving the PUSCH transmitted by using the beam, wherein the transmission of the PUSCH is based on port virtualization applied to most recently transmitted sounding reference signal (SRS) in a specific resource, wherein the specific resource is an SRS resource in which the DL RS is configured as spatial related information, and wherein the port virtualization is applied based on a first matrix determined by a number of antenna ports of the UE×a number of ports of the specific resource, related to generation of the number of antenna ports from the number of ports of the specific resource.