# US 2021/0242977 A1 · Type 3 hybrid automatic repeat request acknowledgment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0242977 A1 - Document ID: US20210242977A1 - Status: Published application - Kind: A1 - Application number: 17/165,732 - Filed: 2021-02-02 - Published: 2021-08-05 - Earliest claimed: 2020-02-04 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Mostafa KHOSHNEVISAN; Jing SUN; Xiaoxia ZHANG - Web page: https://patentgrep.com/patent/US20210242977A1 ## CPC - H04L 1/1685: {the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal} - H04L 1/1819: {with retransmission of additional or different redundancy} - H04L 1/0031: {Multiple signaling transmission (H04L1/1664, F15 take precedence)} - H04L 1/0061: {Error detection codes} - H04L 1/1896: {ARQ related signaling} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 76/11: Allocation or use of connection identifiers - H04L 1/0025: {Transmission of mode-switching indication} - H04L 1/1822: involving configuration of automatic repeat request [ARQ] with parallel processes - H04L 1/1887: {Scheduling and prioritising arrangements} - 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 Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a downlink control information (DCI) message, the DCI message including at least a first field and a second field, the first field indicating a request for Type 3 hybrid automatic repeat request (HARD) acknowledgment (HARQ-ACK), the second field indicating a physical downlink shared channel (PDSCH) communication is not scheduled when a value of the second field includes: all zeros if resource allocation Type 0 is configured, all ones if resource allocation Type 1 is configured, or all ones or all zeros in a dynamic switch configuration. The UE may transmit the Type 3 HARQ-ACK based at least in part on the DCI message. Numerous other aspects are described. ## Claims ### Claim 1 A method of wireless communication performed by a user equipment (UE), comprising: receiving a downlink control information (DCI) message, the DCI message including at least a first field and a second field, the first field indicating a request for Type 3 hybrid automatic repeat request (HARD) acknowledgment (HARQ-ACK), the second field indicating a physical downlink shared channel (PDSCH) communication is not scheduled when a value of the second field includes: all zeros if resource allocation Type 0 is configured, all ones if resource allocation Type 1 is configured, or all ones or all zeros in a dynamic switch configuration; and transmitting the Type 3 HARQ-ACK based at least in part on the DCI message. ### Claim 2 (depends on 1) The method of claim 1, wherein the first field comprises a one-shot HARQ-ACK request field. ### Claim 3 (depends on 1) The method of claim 1, wherein the second field comprises a frequency domain resource allocation field. ### Claim 4 (depends on 1) The method of claim 1, wherein the UE is configured with the resource allocation Type 0, the resource allocation Type 1, or the dynamic switch configuration based at least in part on radio resource control signaling. ### Claim 5 (depends on 1) The method of claim 1, wherein the DCI message includes one or more additional fields that indicate one or more of: a value of all ones or all zeros for a HARQ process identification field of the DCI message, a value of all zeros or 1 for a new data indicator field of the DCI message, a value of all ones or all zeros for a modulation and coding scheme field of the DCI message, or a value of all zeros or all ones for a redundancy version field of the DCI message. ### Claim 6 (depends on 1) The method of claim 1, wherein a cyclic redundancy check (CRC) of the DCI message is scrambled with a radio network temporary identifier (RNTI). ### Claim 7 (depends on 6) The method of claim 6, wherein the RNTI comprises a cell RNTI or a modulation and coding scheme cell RNTI. ### Claim 8 (depends on 6) The method of claim 6, wherein the DCI message requests Type 3 HARQ-ACK based at least in part on the first field of the DCI message indicating a request for Type 3 HARQ-ACK and one or more of: a value of a modulation and coding scheme field of the DCI message indicating that the DCI message activates semi-persistent scheduling, or a value of the second field of the DCI message indicating that the DCI message activates semi-persistent scheduling. ### Claim 9 (depends on 6) The method of claim 6, wherein the DCI indicates to not release semi-persistent scheduling based at least in part on the first field indicating a request for Type 3 HARQ-ACK. ### Claim 10 (depends on 6) The method of claim 6, wherein the DCI message indicates to not transmit HARQ-ACK for the DCI message based at least in part on the DCI message indicating a request for Type 3 HARQ-ACK. ### Claim 11 (depends on 6) The method of claim 6, wherein the DCI message requests Type 3 HARQ-ACK based at least in part on a value of a new data indicator field of the DCI message indicating scheduling of a retransmission of a message sent using semi-persistent scheduling. ### Claim 12 A method of wireless communication performed by a user equipment (UE), comprising: receiving a downlink control information (DCI) message, the DCI message including one or more fields associated with a secondary cell dormancy indication when the DCI message does not indicate a request for Type 3 hybrid automatic repeat request (HARQ) acknowledgment (HARQ-ACK). ### Claim 13 (depends on 12) The method of claim 12, wherein the DCI message indicates a request for Type 3 HARQ-ACK based at least in part on a value of a frequency domain resource allocation field of the DCI message including: all zeros if resource allocation Type 0 is configured, all ones if resource allocation Type 1 is configured, or all ones or all zeros in a dynamic switch configuration. ### Claim 14 (depends on 12) The method of claim 12, wherein the DCI message does not indicate a request for Type 3 HARQ-ACK based at least in part on a value of a one-shot HARQ-ACK request field of the DCI message. ### Claim 15 A user equipment (UE) for wireless communication, comprising: a memory; and one or more processors operatively coupled to the memory, the one or more processors configured to: receive a downlink control information (DCI) message, the DCI message including at least a first field and a second field, the first field indicating a request for Type 3 hybrid automatic repeat request (HARD) acknowledgment (HARQ-ACK), the second field indicating a physical downlink shared channel (PDSCH) communication is not scheduled when a value of the second field includes: all zeros if resource allocation Type 0 is configured, all ones if resource allocation Type 1 is configured, or all ones or all zeros in a dynamic switch configuration; and transmit the Type 3 HARQ-ACK based at least in part on the DCI message. ### Claim 16 (depends on 15) The UE of claim 15, wherein the first field comprises a one-shot HARQ-ACK request field. ### Claim 17 (depends on 15) The UE of claim 15, wherein the second field comprises a frequency domain resource allocation field. ### Claim 18 (depends on 15) The UE of claim 15, wherein the UE is configured with the resource allocation Type 0, the resource allocation Type 1, or the dynamic switch configuration based at least in part on radio resource control signaling. ### Claim 19 (depends on 15) The UE of claim 15, wherein the DCI message includes one or more additional fields that indicate one or more of: a value of all ones or all zeros for a HARQ process identification field of the DCI message, a value of all zeros or 1 for a new data indicator field of the DCI message, a value of all ones or all zeros for a modulation and coding scheme field of the DCI message, or a value of all zeros or all ones for a redundancy version field of the DCI message. ### Claim 20 (depends on 15) The UE of claim 15, wherein a cyclic redundancy check (CRC) of the DCI message is scrambled with a radio network temporary identifier (RNTI). ### Claim 21 (depends on 20) The UE of claim 20, wherein the RNTI comprises a cell RNTI or a modulation and coding scheme cell RNTI. ### Claim 22 (depends on 20) The UE of claim 20, wherein the DCI message requests Type 3 HARQ-ACK based at least in part on the first field of the DCI message indicating a request for Type 3 HARQ-ACK and one or more of: a value of a modulation and coding scheme field of the DCI message indicating that the DCI message activates semi-persistent scheduling, or a value of the second field of the DCI message indicating that the DCI message activates semi-persistent scheduling. ### Claim 23 (depends on 20) The UE of claim 20, wherein the DCI indicates to not release semi-persistent scheduling based at least in part on the first field indicating a request for Type 3 HARQ-ACK. ### Claim 24 (depends on 20) The UE of claim 20, wherein the DCI message indicates to not transmit HARQ-ACK for the DCI message based at least in part on the DCI message indicating a request for Type 3 HARQ-ACK. ### Claim 25 (depends on 20) The UE of claim 20, wherein the DCI message requests Type 3 HARQ-ACK based at least in part on a value of a new data indicator field of the DCI message indicating scheduling of a retransmission of a message sent using semi-persistent scheduling. ### Claim 26 A UE for wireless communication, comprising: a memory; and one or more processors operatively coupled to the memory, the one or more processors configured to: receive a downlink control information (DCI) message, the DCI message including one or more fields associated with a secondary cell dormancy indication when the DCI message does not indicate a request for Type 3 hybrid automatic repeat request (HARQ) acknowledgment (HARQ-ACK). ### Claim 27 (depends on 26) The UE of claim 26, wherein the DCI message indicates a request for Type 3 HARQ-ACK based at least in part on a value of a frequency domain resource allocation field of the DCI message including: all zeros if resource allocation Type 0 is configured, all ones if resource allocation Type 1 is configured, or all ones or all zeros in a dynamic switch configuration. ### Claim 28 (depends on 26) The UE of claim 26, wherein the DCI message does not indicate a request for Type 3 HARQ-ACK based at least in part on a value of a one-shot HARQ-ACK request field of the DCI message. ### Claim 29 An apparatus for wireless communication, comprising: means for receiving a downlink control information (DCI) message, the DCI message including at least a first field and a second field, the first field indicating a request for Type 3 hybrid automatic repeat request (HARQ) acknowledgment (HARQ-ACK), the second field indicating a physical downlink shared channel (PDSCH) communication is not scheduled when a value of the second field includes: all zeros if resource allocation Type 0 is configured, all ones if resource allocation Type 1 is configured, or all ones or all zeros in a dynamic switch configuration; and means for transmitting the Type 3 HARQ-ACK based at least in part on the DCI message. ### Claim 30 (depends on 29) The apparatus of claim 29, wherein the first field comprises a one-shot HARQ-ACK request field. ### Claim 31 (depends on 29) The apparatus of claim 29, wherein the second field comprises a frequency domain resource allocation field. ### Claim 32 (depends on 29) The apparatus of claim 29, wherein a cyclic redundancy check (CRC) of the DCI message is scrambled with a radio network temporary identifier (RNTI).