# US 2022/0286239 A1 · Method and apparatus to allocate harq process dynamically for uplink 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 2022/0286239 A1 - Document ID: US20220286239A1 - Status: Published application - Kind: A1 - Application number: 17/636,016 - Filed: 2020-05-26 - Published: 2022-09-08 - Earliest claimed: 2019-10-03 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Jeonggu LEE; Seungjune YI - Web page: https://patentgrep.com/patent/US20220286239A1 ## CPC - H04L 1/1854: {Scheduling and prioritising arrangements} - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 1/1822: involving configuration of automatic repeat request [ARQ] with parallel processes - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - 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 The present disclosure relates to a method for performing an uplink (UL) transmission by user equipment in a wireless communication system. In particular, the method includes the steps of: receiving an UL grant associated with a first Hybrid Automatic Repeat Request (HARQ) process from a gNB; selecting a second HARQ process among the first HARQ process and the second HARQ process, when there is a first medium access control (MAC) protocol data unit (PDU) which is associated with the first HARQ process and is a pending MAC PDU; generating a second MAC PDU associated with the second HARQ process; and performing the uplink transmission of the second MAC PDU with an identifier (ID) of the second HARQ process. ## Claims ### Claim 1 A method for performing an uplink (UL) transmission by user equipment in a wireless communication system, the method comprising: receiving an UL grant associated with a first Hybrid Automatic Repeat Request (HARQ) process from a gNB; selecting a second HARQ process among the first HARQ process and the second HARQ process, based on there being a first medium access control (MAC) protocol data unit (PDU) which is associated with the first HARQ process and is a pending MAC PDU; generating a second MAC PDU associated with the second HARQ process; and performing the uplink transmission of the second MAC PDU with an identifier (ID) of the second HARQ process. ### Claim 2 (depends on 1) The method of claim 1, wherein the pending MAC PDU is a MAC PDU which has never been transmitted on a UL resource associated with the first HARQ process. ### Claim 3 (depends on 2) The method of claim 2, wherein the UL resource is defined by a configured grant (CG) associated with the first HARQ process. ### Claim 4 (depends on 1) The method of claim 1, wherein the any configured grant (CG) timer or CG retransmission timer of the second HARQ process is not running. ### Claim 5 (depends on 1) The method of claim 1, further comprising: receiving an UL grant for retransmission associated with the first HARQ process; and performing the uplink transmission of the first MAC PDU using the UL grant for the retransmission. ### Claim 6 A user equipment (UE) in a wireless communication system, the UE comprising: at least one transceiver; at least one processor; and at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising: receiving a uplink (UL) grant associated with a first Hybrid Automatic Repeat Request (HARQ) process from a gNB; selecting a second HARQ process among the first HARQ process and the second HARQ process, based on there being a first medium access control (MAC) protocol data unit (PDU) which is associated with the first HARQ process and is a pending MAC PDU; generating a second MAC PDU associated with the second HARQ process; and performing an uplink transmission of the second MAC PDU with an identifier (ID) of the second HARQ process. ### Claim 7 (depends on 6) The UE of claim 6, wherein the pending MAC PDU is a MAC PDU which has never been transmitted on a UL resource associated with the first HARQ process. ### Claim 8 (depends on 7) The UE of claim 7, wherein the UL resource is defined by a configured grant (CG) associated with the first HARQ process. ### Claim 9 (depends on 6) The UE of claim 6, wherein the any configured grant (CG) timer or CG retransmission timer of the second HARQ process is not running. ### Claim 10 (depends on 6) The UE of claim 6, wherein the operations further comprise: receiving an UL grant for retransmission associated with the first HARQ process; and performing the uplink transmission of the first MAC PDU using the UL grant for the retransmission. ### Claim 11 An apparatus for a user equipment (UE), the apparatus comprising: at least one processor; and at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising: receiving a uplink (UL) grant associated with a first Hybrid Automatic Repeat Request (HARQ) process from a gNB; selecting a second HARQ process among the first HARQ process and the second HARQ process, based on there being a first medium access control (MAC) protocol data unit (PDU) which is associated with the first HARQ process and is a pending MAC PDU; generating a second MAC PDU associated with the second HARQ process; and performing an uplink transmission of the second MAC PDU with an identifier (ID) of the second HARQ process. ### Claim 12 A computer readable storage medium storing at least one computer program comprising instructions that, when executed by at least one processor, cause the at least one processor to perform operations for a user equipment (UE), the operations comprising: receiving a uplink (UL) grant associated with a first Hybrid Automatic Repeat Request (HARQ) process from a gNB; selecting a second HARQ process among the first HARQ process and the second HARQ process, based on there being a first medium access control (MAC) protocol data unit (PDU) which is associated with the first HARQ process and is a pending MAC PDU; generating a second MAC PDU associated with the second HARQ process; and performing an uplink transmission of the second MAC PDU with an identifier (ID) of the second HARQ process.