# US 12,004,190 B2 · Method and device for performing uplink/downlink transmission 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 12,004,190 B2 - Document ID: US12004190B2 - Status: Granted - Kind: B2 - Application number: 17/887,354 - Filed: 2022-08-12 - Published: 2022-12-08 - Granted: 2024-06-04 - Earliest claimed: 2020-02-13 - Assignees: Wilus Institute of Standards and Technology Inc. - Applicants: Wilus Institute of Standards and Technology Inc. - Inventors: Minseok Noh; Kyungjun Choi; Jinsam Kwak - Web page: https://patentgrep.com/patent/US12004190B2 ## CPC - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 5/0062: {Avoidance of ingress interference, e.g. ham radio channels} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 72/53: based on regulatory allocation policies - H04W 72/56: based on priority criteria - H04W 74/0808: using carrier sensing, e.g. carrier sense multiple access [CSMA] - H04L 27/26025: {Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking (allocating sub-channels of the transmission path H04L5/003)} - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A method for receiving downlink transmission by a terminal comprises the steps of: performing uplink transmission, which is related to channel occupancy shared between a base station and the terminal, to the base station; and receiving, from the base station, downlink transmission performed after a gap from a time point at which the base station has received the uplink transmission, wherein the downlink transmission is performed on the basis of channel access performed by the base station, the channel access is performed on the basis of the gap, and information included in the downlink transmission and a resource through which the downlink transmission is performed are determined on the basis of whether the base station has configured, for the terminal, a threshold value of energy detection for the channel occupancy. ## Claims ### Claim 1 A method for use by a user equipment in a wireless communication system, the method comprising: performing a first transmission that is a configured grant (CG) uplink transmission on a first resource, wherein the CG uplink transmission is a transmission performed on a resource pre-configured semi-statically, wherein the first resource is configured with a plurality of listen before talk Listen Before Talk (LBT) bandwidth subsets; and performing a second transmission that is a scheduled uplink transmission on a second resource, when conditions are satisfied, the second transmission is performed on the second resource immediately after a last symbol for the first transmission, when the conditions are not satisfied, the first transmission is dropped before a start point of the second resource, wherein the conditions include the following: when the second resource occupies all resource blocks (RBs) included in a LBT bandwidth subset among the plurality of LBT bandwidth subsets, the second transmission is performed on the second resource immediately after the last symbol for the first transmission, and when the second resource does not occupy the all RBs included in the LBT bandwidth subset among the plurality of LBT bandwidth subsets, the first transmission is dropped before the start point of the second resource. ### Claim 2 (depends on 1) The method of claim 1, wherein the conditions further include that the first transmission is performed based on channel access in which random backoff is performed using a contention window (CW) of a variable size. ### Claim 3 (depends on 2) The method of claim 2, wherein the conditions further include that the second transmission is performed based on a second channel access priority class (CAPC) value that is smaller than or equal to a first CAPC value used in the channel access. ### Claim 4 (depends on 3) The method of claim 3, wherein the conditions further include that a sum of transmission durations of the first resource and the second resource in a time domain does not exceed a maximum channel occupancy time (MCOT) corresponding to the first CAPC value. ### Claim 5 A user equipment for use in a wireless communication system, the user equipment comprising: a communication module; and a processor that controls the communication module, wherein the processor is configured to: perform a first transmission that is a configured grant (CG) uplink transmission on a first resource, wherein the CG uplink transmission is a transmission performed on a resource pre-configured semi-statically, wherein the first resource is configured with a plurality of Listen Before Talk (LBT) bandwidth subsets, perform a second transmission that is a scheduled uplink transmission on a second resource, when conditions are satisfied, the second transmission is performed on the second resource immediately after a last symbol for the first transmission, when the conditions are not satisfied, the first transmission is dropped before a start point of the second resource, wherein the conditions include the following: when the second resource occupies all resource blocks (RBs) included in a LBT bandwidth subset among the plurality of LBT bandwidth subsets, the second transmission is performed on the second resource immediately after the last symbol for the first transmission, and when the second resource does not occupy the all RBs included in the LBT bandwidth subset among the plurality of LBT bandwidth subsets, the first transmission is dropped before the start point of the second resource. ### Claim 6 (depends on 5) The user equipment of claim 5, wherein the conditions further include that the first transmission is performed based on channel access in which random backoff is performed using a contention window (CW) of a variable size. ### Claim 7 (depends on 6) The user equipment of claim 6, wherein the conditions further include that the second transmission is performed based on a second channel access priority class (CAPC) value that is smaller than or equal to a first CAPC value used in the channel access. ### Claim 8 (depends on 7) The user equipment of claim 7, wherein the conditions further include that a sum of transmission durations of the first resource and the second resource in a time domain does not exceed a maximum channel occupancy time (MCOT) corresponding to the first CAPC value. ### Claim 9 A method for use by a base station in a wireless communication system, the method comprising: receiving a first transmission that is a configured grant (CG) uplink transmission transmitted on a first resource, wherein the CG uplink transmission is transmission performed on a semi-statically pre-configured resource, wherein the first resource is configured with a plurality of Listen Before Talk (LBT) bandwidth subsets; receiving a second transmission that is a scheduled uplink transmission transmitted on a second resource, when conditions are satisfied, the second transmission is performed on the second resource immediately after a last symbol for the first transmission, and when the conditions are not satisfied, the first transmission is dropped before a start point of the second resource, wherein the conditions include the following: when the second resource occupies all resource blocks (RBs) included in a LBT bandwidth subset among the plurality of LBT bandwidth subsets, the second transmission is performed on the second resource immediately after the last symbol for the first transmission, when the second resource does not occupy the all RBs included in the LBT bandwidth subset among the plurality of LBT bandwidth subsets, the first transmission is dropped before the start point of the second resource. ### Claim 10 (depends on 9) The method of claim 9, wherein the conditions further include that the first transmission is performed based on channel access in which random backoff is performed using a contention window (CW) of a variable size. ### Claim 11 (depends on 10) The method of claim 10, wherein the conditions further include that the second transmission be performed based on a second channel access priority class (CAPC) value that is smaller than or equal to a first CAPC value used in the channel access. ### Claim 12 (depends on 11) The method of claim 11, wherein the conditions further include that a sum of transmission durations of the first resource and the second resource in a time domain does not exceed a maximum channel occupancy time (MCOT) corresponding to the first CAPC value.