# US 12,603,728 B2 · Sequence selection based on received downlink signals > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,603,728 B2 - Document ID: US12603728B2 - Status: Granted - Kind: B2 - Application number: 18/500,422 - Filed: 2023-11-02 - Published: 2024-05-02 - Granted: 2026-04-14 - Earliest claimed: 2022-11-02 - Assignees: InterDigital Patent Holdings, Inc. - Applicants: InterDigital Patent Holdings, Inc. - Inventors: Nazli Khan Beigi; Jonghyun Park; Paul Marinier; Moon Il Lee; Oumer Teyeb - Web page: https://patentgrep.com/patent/US12603728B2 ## CPC - H04L 1/1642: {Formats specially adapted for sequence numbers} - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04L 1/1854: {Scheduling and prioritising arrangements} - H04L 1/1896: {ARQ related signaling} - H04W 72/044: based on the type of the allocated resource - H04W 72/232: the control data signalling from the physical layer, e.g. DCI signalling - 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 wireless transmit/receive unit (WTRU) may include a transceiver and a processor. The WTRU may be configured to receive one or more downlink signals. The WTRU may be configured to receive configuration information indicating time and frequency resources for transmission of hybrid automatic repeat request (HARQ) acknowledgement (ACK). The configuration information may indicate a first sequence. The WTRU may be configured to determine a set of sequences to be used in response to the receipt of the one or more downlink signals. The set of sequences may be determined based on the indicated first sequence. The WTRU may be configured to send a second sequence from the set of sequences in the time and frequency resources to indicate HARQ-ACK. The second sequence may be selected based on a number of physical downlink control channel (PDCCH) monitoring occasions associated with the indicated HARQ-ACK. ## Claims ### Claim 1 A wireless transmit/receive unit (WTRU) comprising: a transceiver; and a processor configured to: receive, via the transceiver, one or more downlink signals; receive, via the transceiver, configuration information indicating time and frequency resources for transmission of hybrid automatic repeat request (HARQ) acknowledgement (ACK), wherein the configuration information indicates a first sequence; determine a set of sequences to be used in response to the receipt of the one or more downlink signals, wherein the set of sequences are determined based on the indicated first sequence; and transmit, via the transceiver, a second sequence from the set of sequences in the time and frequency resources to indicate HARQ-ACK, wherein the second sequence is selected based on a number of physical downlink control channel (PDCCH) monitoring occasions associated with the indicated HARQ-AC K. ### Claim 2 (depends on 1) The WTRU of claim 1, wherein the processor is further configured to transmit, via the transceiver, the first sequence when the number of PDCCH monitoring occasions is less than a predetermined threshold. ### Claim 3 (depends on 1) The WTRU of claim 1, wherein the configuration information comprises a WTRU-specific root index or a cyclic shift. ### Claim 4 (depends on 3) The WTRU of claim 3, wherein the set of sequences is determined based on one or more of the WTRU-specific root index or the cyclic shift. ### Claim 5 (depends on 1) The WTRU of claim 1, wherein the configuration information comprises uplink subbands within subband non-overlapping full duplex (SBFD) download time units. ### Claim 6 (depends on 1) The WTRU of claim 1, wherein the one or more downlink signals are received based on a higher-layer configuration associated with the time and frequency resources. ### Claim 7 (depends on 1) The WTRU of claim 1, wherein the set of sequences is associated with a specific acknowledgment pattern. ### Claim 8 (depends on 1) The WTRU of claim 1, wherein the processor is further configured to increment a counter for each PDCCH monitoring occasion, and wherein the second sequence is selected based on a value of the counter. ### Claim 9 (depends on 1) The WTRU of claim 1, wherein the second sequence is selected based on a total detected downlink assignment index (DAI). ### Claim 10 A method performed by a wireless transmit/receive unit (WTRU), the method comprising: receiving one or more downlink signals; receiving configuration information indicating time and frequency resources for transmission of HARQ-ACK, wherein the configuration information indicates a first sequence; determining a set of sequences to be used in response to the receipt of the one or more downlink signals, wherein the set of sequences are determined based on the indicated first sequence; and sending a second sequence from the set of sequences in the time and frequency resources to indicate HARQ-ACK, wherein the second sequence is selected based on a number of physical downlink control channel (PDCCH) monitoring occasions associated with the indicated HARQ-ACK. ### Claim 11 (depends on 10) The method of claim 10, further comprising sending the first sequence when the number of PDCCH monitoring occasions is less than a predetermined threshold. ### Claim 12 (depends on 10) The method of claim 10, wherein the configuration information comprises a WTRU-specific root index or a cyclic shift. ### Claim 13 (depends on 12) The method of claim 12, wherein the set of sequences is determined based on one or more of the WTRU-specific root index or the cyclic shift. ### Claim 14 (depends on 10) The method of claim 10, wherein the configuration information comprises uplink subbands within subband non-overlapping full duplex (SBFD) download time units. ### Claim 15 (depends on 10) The method of claim 10, wherein the one or more downlink signals are received based on a higher-layer configuration associated with the time and frequency resources. ### Claim 16 (depends on 10) The method of claim 10, wherein the set of sequences is associated with a specific acknowledgment pattern. ### Claim 17 (depends on 10) The method of claim 10, further comprising incrementing a counter for each PDCCH monitoring occasion, and wherein the second sequence is selected based on a value of the counter. ### Claim 18 (depends on 10) The method of claim 10, wherein the second sequence is selected based on a total detected downlink assignment index (DAI).