# US 2019/0174472 A1 · Methods, devices and systems for grant-less uplink multiple access > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0174472 A1 - Document ID: US20190174472A1 - Status: Published application - Kind: A1 - Application number: 16/324,007 - Filed: 2017-08-10 - Published: 2019-06-06 - Earliest claimed: 2016-08-10 - Assignees: IDAC Holdings, Inc. - Applicants: Idac Holdings, Inc. - Inventors: Moon-il Lee; Afshin Haghighat; Erdem Bala; Janet A. Stern-Berkowitz; Mihaela C. Beluri; Ananth Kini - Web page: https://patentgrep.com/patent/US20190174472A1 ## CPC - 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 1/1864: {ARQ related signaling (H04L1/1607 takes precedence)} - H04W 72/044: based on the type of the allocated resource - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - 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) ## Abstract Methods, apparatuses and systems are provided for grant-less (GL) uplink transmissions. A wireless transmit/receive unit (WTRU) may receive a configuration of a set of GL Physical Uplink Shared Channel (GL-PUSCH) frequency resources. The WTRU may monitor for a downlink control information (DCI) message, wherein the DCI message includes an indication of a presence of at least a subset of the set of GL-PUSCH frequency resources. If the WTRU successfully receives the DCI message, the WTRU may select one or more GL-PUSCH frequency resources from the subset of the set of GL-PUSCH frequency resources and may select a time period. The WTRU may transmit data on a GL-PUSCH using the selected GL-PUSCH frequency resources during the selected time period. The WTRU may also monitor for hybrid automatic repeat request acknowledgement (HARQ-ACK) based on the selected GL-PUSCH frequency resources. The WTRU may monitor for the DCI during a fixed time window. ## Claims ### Claim 1 A method for use in a wireless transmit/receive unit (WTRU) for multiple access wireless communications, the method comprising: receiving, by the WTRU, a configuration of a set of grant-less Physical Uplink Shared Channel (GL-PUSCH) frequency resources; monitoring, by the WTRU, for a downlink control information (DCI) message, wherein the DCI message includes an indication of a presence of at least a subset of the set of GL-PUSCH frequency resources; on a condition of successful reception of the DCI message, selecting, by the WTRU, one or more GL-PUSCH frequency resources from the subset of the set of GL-PUSCH frequency resources and a time period; transmitting, by the WTRU, data on a GL-PUSCH using the selected one or more GL-PUSCH frequency resources during the selected time period; determining, by the WTRU, a time location for reception of hybrid automatic repeat request acknowledgement (HARQ-ACK), associated with the transmitted GL-PUSCH data, based on the selected one or more GL-PUSCH frequency resources; and monitoring, by the WTRU, for reception of the HARQ-ACK during the determined time location. ### Claim 2 (canceled) ### Claim 3 (depends on 1) The method of claim 1, wherein the DCI message is a common DCI message. ### Claim 4 (depends on 1) The method of claim 1, wherein the selection of the one or more GL-PUSCH frequency resources from the subset of GL-PUSCH frequency resources is determined randomly. ### Claim 5 (depends on 1) The method of claim 1, wherein the selection of the one or more GL-PUSCH frequency resources from the subset of GL-PUSCH frequency resources is determined based on a WTRU-ID. ### Claim 6 (depends on 1) The method of claim 1, wherein the selection of the time period is determined randomly. ### Claim 7 (depends on 1) The method of claim 1, wherein the selection of the time period is determined based on a WTRU-ID. ### Claim 8 (depends on 1) The method of claim 1, wherein the monitoring for the DCI message occurs during a first fixed time window. ### Claim 9 (depends on 1) The method of claim 1, wherein the time period is within a second fixed time window. ### Claim 10 (depends on 1) The method of claim 1, wherein the determination of the time location is further based on a GL-PUSCH resource index. ### Claim 11 A method for use in a wireless transmit/receive unit (WTRU) for wireless communications, the method comprising: determining, by the WTRU, a time location for reception of hybrid automatic repeat request acknowledgement (HARQ-ACK), associated with transmitted GL-PUSCH data, based on one or more GL-PUSCH frequency resources used to transmit the GL-PUSCH; and monitoring, by the WTRU, for the reception of the HARQ-ACK during the determined time location. ### Claim 12 (depends on 11) The method of claim 11, wherein the determination of the time location is further based on a GL-PUSCH resource index. ### Claim 13 A wireless transmit/receive unit (WTRU) for multiple access wireless communications, the WTRU comprising: a transceiver configured to receive a configuration of a set of grant-less Physical Uplink Shared Channel (GL-PUSCH) frequency resources; the transceiver operatively coupled to a processor, the transceiver and the processor configured to monitor for a downlink control information (DCI) message, wherein the DCI message includes an indication of a presence of at least a subset of the set of GL-PUSCH frequency resources; the processor configured, on a condition of successful reception of the DCI message, to select one or more GL-PUSCH frequency resources from the subset of the set of GL-PUSCH frequency resources and a time period; the transceiver configured to transmit data on a GL-PUSCH using the selected one or more GL-PUSCH frequency resources during the selected time period; the processor configured to determine a time location for reception of hybrid automatic repeat request acknowledgement (HARQ-ACK), associated with the transmitted GL-PUSCH data, based on the selected one or more GL-PUSCH frequency resources; and the transceiver and the processor configured to monitor for reception of the HARQ-ACK during the determined time location. ### Claim 14 (canceled) ### Claim 15 (depends on 13) The WTRU of claim 13, wherein the DCI message is a common DCI message. ### Claim 16 (depends on 13) The WTRU of claim 13, wherein the selection of the one or more GL-PUSCH frequency resources from the subset of GL-PUSCH frequency resources is determined randomly. ### Claim 17 (depends on 13) The WTRU of claim 13, wherein the selection of the one or more GL-PUSCH frequency resources from the subset of GL-PUSCH frequency resources is determined based on a WTRU-ID. ### Claim 18 (depends on 13) The WTRU of claim 13, wherein the selection of the time period is determined randomly. ### Claim 19 (depends on 13) The WTRU of claim 13, wherein the selection of the time period is determined based on a WTRU-ID. ### Claim 20 (depends on 13) The WTRU of claim 13, wherein the monitoring for the DCI message occurs during a first fixed time window. ### Claim 21 (depends on 13) The WTRU of claim 13, wherein the time period is within a second fixed time window. ### Claim 22 (depends on 13) The WTRU of claim 13, wherein the determination of the time location is further based on a GL-PUSCH resource index.