# US 12,225,541 B2 · Method and user equipment for hybrid automatic repeat request process identity selection > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,541 B2 - Document ID: US12225541B2 - Status: Granted - Kind: B2 - Application number: 17/716,300 - Filed: 2022-04-08 - Published: 2022-10-20 - Granted: 2025-02-11 - Earliest claimed: 2021-04-09 - Assignees: Sharp Kabushiki Kaisha - Applicants: Sharp Kabushiki Kaisha - Inventors: Heng-Li Chin - Web page: https://patentgrep.com/patent/US12225541B2 ## CPC - H04L 1/1887: {Scheduling and prioritising arrangements} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 1/1822: involving configuration of automatic repeat request [ARQ] with parallel processes - H04L 1/1864: {ARQ related signaling (H04L1/1607 takes precedence)} - H04L 1/188: {Time-out mechanisms} - H04W 72/1268: of uplink data flows - H04W 72/566: of the information or information source or recipient - H04W 80/02: Data link layer protocols - 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 and a user equipment for HARQ process ID selection are provided. The method includes: receiving a configuration message to configure a Configured Grant (CG) configuration and a set of HARQ process IDs that is available for the CG configuration, the set of HARQ process IDs including a first HARQ process ID for retransmission and a second HARQ process ID for initial transmission; determining that a CG physical uplink shared channel (PUSCH) corresponding to the CG configuration becomes available for transmission; selecting, based on a first HARQ process ID selection procedure, the first HARQ process ID or the second HARQ process ID from the set of HARQ process IDs for the CG PUSCH; and transmitting, based on the selected first or second HARQ process ID, a first Medium Access Control (MAC) Protocol Data Unit (PDU) for retransmission or a second MAC PDU for initial transmission on the CG PUSCH. ## Claims ### Claim 1 A method performed by a User Equipment (UE) for Hybrid Automatic Repeat Request (HARQ) process Identity (ID) selection, the method comprising: receiving a configuration message to configure a Configured Grant (CG) configuration and a set of HARQ process IDs that is available for the CG configuration, the set of HARQ process IDs including a first HARQ process ID and a second HARQ process ID; determining a CG physical uplink shared channel (PUSCH) corresponding to the CG configuration; selecting, based on a first HARQ process ID selection procedure, the first HARQ process ID or the second HARQ process ID for the CG PUSCH in a case that a Logical Channel (LCH)-based prioritization indication, a CG retransmission timer, and an Information Element (IE) for enabling the first HARQ process ID selection procedure are configured; and transmitting, based on the selected first or second HARQ process ID, a first Medium Access Control (MAC) Protocol Data Unit (PDU) for retransmission or a second MAC PDU for initial transmission on the CG PUSCH, wherein the first HARQ process ID selection procedure includes: determining a priority of first data multiplexed in the first MAC PDU as a first priority of the first HARQ process ID; determining a priority of second data to be multiplexed in the second MAC PDU as a second priority of the second HARQ process ID; selecting, based on the first priority and the second priority, the first HARQ process ID or the second HARQ process ID for the CG PUSCH; and prioritizing the first HARQ process ID over the second HARQ process ID in a case that the first priority is equal to the second priority. ### Claim 2 (depends on 1) The method of claim 1, wherein: the first data is from a first set of LCHs, the second data is from a second set of LCHs, the priority of the first data is determined based on an LCH with a highest LCH priority among the first set of LCHs, and the priority of the second data is determined based on an LCH with a highest LCH priority among the second set of LCHs. ### Claim 3 (depends on 1) The method of claim 1, wherein the first HARQ process ID selection procedure further includes: selecting the first HARQ process ID for the CG PUSCH in a case that the first priority is higher than the second priority; and selecting the second HARQ process ID for the CG PUSCH in a case that the second priority is higher than the first priority. ### Claim 4 (depends on 1) The method of claim 1, wherein the IE is configured for the CG configuration or for a MAC entity of the UE. ### Claim 5 (depends on 1) The method of claim 1, further comprising: selecting, based on a second HARQ process ID selection procedure, the first HARQ process ID or the second HARQ process ID for the CG PUSCH in a case that at least one of the LCH-based prioritization indication, the CG retransmission timer, and the IE is not configured, wherein the second HARQ process ID selection procedure includes: prioritizing the first HARQ process ID over the second HARQ process ID. ### Claim 6 (depends on 5) The method of claim 5, wherein prioritizing the first HARQ process ID over the second HARQ process ID comprises: selecting the first HARQ process ID for the CG PUSCH. ### Claim 7 A User Equipment (UE) for Hybrid Automatic Repeat Request (HARQ) process Identity (ID) selection, the UE comprising: at least one processor; and at least one non-transitory computer-readable medium coupled to the at least one processor and storing one or more computer-executable instructions that, when executed by the at least one processor, cause the UE to: receive a configuration message to configure a Configured Grant (CG) configuration and a set of HARQ process IDs that is available for the CG configuration, the set of HARQ process IDs including a first HARQ process ID and a second HARQ process ID; determine a CG physical uplink shared channel (PUSCH) corresponding to the CG configuration; select, based on a first HARQ process ID selection procedure, the first HARQ process ID or the second HARQ process ID for the CG PUSCH in a case that a Logical Channel (LCH)-based prioritization indication, a CG retransmission timer, and an Information Element (IE) for enabling the first HARQ process ID selection procedure are configured; and transmit, based on the selected first or second HARQ process ID, a first Medium Access Control (MAC) Protocol Data Unit (PDU) for retransmission or a second MAC PDU for initial transmission on the CG PUSCH, wherein the first HARQ process ID selection procedure includes: determining a priority of first data multiplexed in the first MAC PDU as a first priority of the first HARQ process ID; determining a priority of second data to be multiplexed in the second MAC PDU as a second priority of the second HARQ process ID; selecting, based on the first priority and the second priority, the first HARQ process ID or the second HARQ process ID for the CG PUSCH; and prioritizing the first HARQ process ID over the second HARQ process ID in a case that the first priority is equal to the second priority. ### Claim 8 (depends on 7) The UE of claim 7, wherein: the first data is from a first set of LCHs, the second data is from a second set of LCHs, the priority of the first data is determined based on an LCH with a highest LCH priority among the first set of LCHs, and the priority of the second data is determined based on an LCH with a highest LCH priority among the second set of LCHs. ### Claim 9 (depends on 7) The UE of claim 7, wherein the first HARQ process ID selection procedure further includes: selecting the first HARQ process ID for the CG PUSCH from the set of HARQ process IDs in a case that the first priority is higher than the second priority; and selecting the second HARQ process ID for the CG PUSCH in a case that the second priority is higher than the first priority. ### Claim 10 (depends on 7) The UE of claim 7, wherein the IE is configured for the CG configuration or for a MAC entity of the UE. ### Claim 11 (depends on 7) The UE of claim 7, wherein the one or more computer-executable instructions, when executed by the at least one processor, further cause the UE to: select, based on a second HARQ process ID selection procedure, the first HARQ process ID or the second HARQ process ID for the CG PUSCH in a case that at least one of the LCH-based prioritization indication, the CG retransmission timer, and the IE is not configured, wherein the second HARQ process ID selection procedure includes: prioritizing the first HARQ process ID over the second HARQ process ID. ### Claim 12 (depends on 11) The UE of claim 11, wherein prioritizing the first HARQ process ID over the second HARQ process ID comprises: selecting the first HARQ process ID for the CG PUSCH.